JP2959487B2 - Wiring display system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a CAD for integrated circuits.
The present invention relates to a wiring display system for wiring patterns in a layout diagram.

[0002]

2. Description of the Related Art Conventionally, in a wiring display system used in an Electron Beam tester (hereinafter, referred to as an EB tester) or the like, an integrated circuit (hereinafter referred to as an LS) displayed on a screen.
Say I. ), Select the wiring of interest from the layout diagram, and which wiring layer is the selected wiring,
Alternatively, the display is emphasized so that the user can recognize which circuit is connected to the input or output terminal and how.

FIG. 15 is a block diagram showing a configuration of a conventional wiring display system. The wiring display system includes an input device 1 such as a mouse, a data processing device 2 including a wiring extracting unit 20, and a display device 3 such as a CRT.

FIG. 16 is a flowchart showing the operation of the wiring display system.

Referring to FIGS. 15 and 16, the operation of the above wiring display system will be described. The wiring of interest is selected by the input device 1 from the layout diagram of the LSI displayed on the display device 3 in advance. (Step S1). next,
Information on the selected wiring (hereinafter, referred to as a selected wiring) is given to the wiring extracting means 20, and based on the information, the wiring extracting means 20 selects all wirings at the same node as the selected wiring, that is, through holes. Alternatively, all the wires connected to the input and output terminals of each line via a contact (hereinafter referred to as a through hole or the like) are extracted (step S2). The extracted wiring is highlighted and displayed (step S3), and the operation is completed.

For example, when a layout diagram as shown in FIG. 18 is displayed on the display screen D, the circuit block FB
It is assumed that the wiring L1 of the input I01 of 1 is selected. Then, the wirings L21, L22, L23, which are the same node in the wiring L1 and the through holes t1, t2, t3, and the wirings L4, L5, which are the same node in the wiring L3 and the through holes t2, t3, t4, are highlighted. The screen is as shown in FIG. If the signal of I01 of the circuit block FB1 is defective, in this example, O01 of the circuit block FB5 is defective.
However, the highlighted wiring has a branch, and it is not known whether the wiring should go in the direction of L3 or L4, and the display area is moved in various directions. Will be. Even if there is no branch, if the wiring is long, display movement is performed many times.

Further, the conventional wiring display system does not use the coordinates of the input and output portions of the selected wiring on the layout.

[0008]

In the conventional wiring display system, the wiring connected as the same node as the selected wiring is:
To extract and highlight all wiring without recognizing whether it is connected to the input terminal or the output terminal of the circuit, when narrowing down the circuit from the selected wiring, the same node as the selected wiring If the wiring to be connected is connected to the input or output terminal of multiple circuits, it is not possible to uniquely determine where the output terminal of this signal line is, and all wiring routes are displayed in layout. However, there is a problem that it is necessary to check each time while moving the layout diagram on the screen of the display device 3.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wiring display system capable of immediately moving a layout diagram or the like when a circuit is narrowed down from a selected wiring.

[0010]

According to the first aspect of the present invention,
Display means for displaying the layout of the integrated circuit; designating means for designating an arbitrary point on the wiring of the layout displayed by the display means; wiring passing through the point designated by the designating means; A wiring display system comprising: a wiring display system comprising: a wiring display system including: a wiring means having a node; a first extracting means for extracting coordinate data on a layout of text data indicating an input unit at the same node as the designated point; Second extracting means for extracting coordinate data on the layout of the text data indicating the output part at the same node as the designated point, and storage means for storing the coordinate data extracted by the first and second extracting means; It is characterized by having.

According to a second aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designating means for designating the point. And a highlighting means for highlighting a wire passing through the point and a wire having the same node as the wire, in the wiring display system, coordinate data on a layout of text data indicating an input unit at the same node as the designated point A first extracting unit for extracting coordinate data, a third extracting unit for extracting coordinate data closest to the designated point from the coordinate data extracted by the first extracting unit, Second extraction of coordinate data on the layout of text data indicating an output unit at a node
, And storage means for storing the coordinate data extracted by the second and third extraction means.

According to a third aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designating means designated by the designating means. And a highlighting means for highlighting a wiring passing through the point and a wiring having the same node as the wiring, a polysilicon wiring at the same node as the designated point as an input unit, A fourth extraction unit for extracting coordinate data, a fifth extraction unit for setting a diffusion region at the same node as the designated point as an output unit, and extracting coordinate data of the output unit,
And storage means for storing the coordinate data extracted by the fifth extraction means.

According to a fourth aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designating means for designating the point. And a highlighting means for highlighting a wiring passing through the point and a wiring having the same node as the wiring, a polysilicon wiring at the same node as the designated point as an input unit, Fourth extraction means for extracting coordinate data, sixth extraction means for extracting coordinate data closest to the designated point from the coordinate data extracted by the fourth extraction means, Fifth extraction means for extracting a diffusion area at the same node as an output part and extracting coordinate data of the output part, and storage means for storing the coordinate data extracted by the fifth and sixth extraction means. Characterized in that it has.

According to a fifth aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designating means designated by the designating means. An emphasizing means for emphasizing a wiring passing through the point and a wiring having the same node as the wiring, a polysilicon wiring crossing a diffusion region at the same node as the designated point as an input unit, A seventh extraction unit for extracting coordinate data of the input unit, a fifth extraction unit for setting a diffusion region at the same node as the designated point as an output unit, and extracting coordinate data of the output unit, Storage means for storing the coordinate data extracted by the fifth and seventh extraction means.

According to a sixth aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designating means designated by the designating means. An emphasizing means for emphasizing a wiring passing through the point and a wiring having the same node as the wiring, a polysilicon wiring crossing a diffusion region at the same node as the designated point as an input unit, A seventh extracting unit for extracting the coordinate data of the input unit, an eighth extracting unit for extracting, from the coordinate data extracted by the seventh extracting unit, coordinate data closest to the designated point, A diffusion area at the same node as the designated point is set as an output unit, and fifth extraction means for extracting coordinate data of the output part, and the coordinate data extracted by the fifth and eighth extraction means are described. And having a storage means for.

According to a seventh aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designating means for designating the point. And a highlighting means for highlighting a wire passing through the point and a wire having the same node as the wire, and inputting a polysilicon wire that intersects two or more diffusion regions at the same node as the designated point. A ninth extraction unit for extracting coordinate data of the input unit; a tenth extraction unit for extracting coordinates between the coordinate data extracted by the ninth extraction unit; A fifth extraction unit for extracting the coordinate data of the output unit from the diffusion region at the node of the output unit, and a storage unit for storing the coordinate data extracted by the fifth and tenth extraction units. Characterized in that it has.

The invention according to claim 8 is a display means for displaying the layout of the integrated circuit, a designating means for designating an arbitrary point on the wiring of the layout displayed by the display means, and a designating means designated by the designating means. And a highlighting means for highlighting a wire passing through the point and a wire having the same node as the wire, and inputting a polysilicon wire that intersects two or more diffusion regions at the same node as the designated point. A ninth extraction unit for extracting coordinate data of the input unit; a tenth extraction unit for extracting coordinates between the coordinate data extracted by the ninth extraction unit; and a tenth extraction unit. An eleventh extraction unit for extracting coordinate data closest to the designated point from the coordinate data extracted by the unit, and a diffusion area at the same node as the designated point as an output unit. And having a fifth extracting means for extracting the coordinate data of the force unit, and a storage means for storing coordinate data extracted in the fifth and eleventh extraction means.

According to a ninth aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designating means for designating the layout. And a highlighting means for highlighting a wire passing through the specified point and a wire having the same node as the wire, wherein a polysilicon wire located at the same node as the designated point is used as an input unit, and the coordinates of the input unit are used. Extracting means for extracting data, extracting means for using a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point as an input unit, and extracting coordinate data of the input section, Extracting means for using a polysilicon wiring intersecting with a diffusion region at the same node as an input portion to extract coordinate data of the input portion, a diffusion region at the same node as the designated point; Means for inputting a polysilicon wiring intersecting with the diffusion region closest to the designated point among the polysilicon wirings intersecting with the input point, extracting coordinate data of the input part, and extracting two or more diffusions at the same node as the designated point Extracting means for inputting a polysilicon wiring intersecting with the region as an input portion and extracting coordinate data between the diffusion regions; and coordinates closest to the designated point at the same node as the designated point and intersecting with two or more diffusion regions. And a twelfth extracting means, which is one of the extracting means for extracting the coordinate data between the diffusion regions by using the polysilicon wiring at the input portion as the input portion, and the second node at the same node as the designated point. A third diffusion unit serving as an output unit and extracting coordinate data of the two output units; and a coordinate data between coordinate data extracted by the thirteenth extraction unit. And having a first 14 extracting means for extracting the data, and storage means for storing coordinate data extracted in the twelfth and fourteenth extraction means.

According to a tenth aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on the wiring of the layout displayed by the display means, and a designating means for designating the layout. And a highlighting means for highlighting a wire passing through the specified point and a wire having the same node as the wire, wherein a polysilicon wire located at the same node as the designated point is used as an input unit, and the coordinates of the input unit are used. Extracting means for extracting data, extracting means for using a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point as an input unit, and extracting coordinate data of the input section, Extracting means for using a polysilicon wiring intersecting with a diffusion region at the same node as an input portion and extracting coordinate data of the input portion, a diffusion device at the same node as the designated point Extracting means for extracting, as an input part, a polysilicon wiring which intersects with the diffusion region closest to the designated point among the polysilicon wirings intersecting the region, and extracting coordinate data of the input part at two or more nodes at the same node as the designated point An extraction means for inputting a polysilicon wiring intersecting with the diffusion region as an input portion and extracting coordinate data between the diffusion regions; and an intersection located at the same node as the designated point and intersecting with two or more diffusion regions and being closest to the designated point. A twelfth extracting means, which is one of the extracting means for extracting the coordinate data between the diffusion regions by using the polysilicon wiring at the coordinates as an input part, and at the same node as the designated point As two diffusion regions, N
A fifteenth extraction means for extracting one type diffusion region and one P type diffusion region one by one, extracting coordinate data of the extracted regions, and extracting coordinate data between the coordinate data; Storage means for storing the coordinate data extracted by the fifteenth extraction means.

The invention according to claim 11 is a display means for displaying a layout of the integrated circuit, a designating means for designating an arbitrary point on the wiring of the layout displayed by the display means, and a designating means for designating the point designated by the designating means. And a highlighting means for highlighting a wire passing through the specified point and a wire having the same node as the wire, wherein a polysilicon wire located at the same node as the designated point is used as an input unit, and the coordinates of the input unit are used. Extracting means for extracting data, extracting means for using a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point as an input unit, and extracting coordinate data of the input section, Extracting means for using a polysilicon wiring intersecting with a diffusion region at the same node as an input portion and extracting coordinate data of the input portion, a diffusion device at the same node as the designated point Extracting means for extracting, as an input part, a polysilicon wiring which intersects with the diffusion region closest to the designated point among the polysilicon wirings intersecting the region, and extracting coordinate data of the input part at two or more nodes at the same node as the designated point An extraction means for inputting a polysilicon wiring intersecting with the diffusion region as an input portion and extracting coordinate data between the diffusion regions; and an intersection located at the same node as the designated point and intersecting with two or more diffusion regions and being closest to the designated point. A twelfth extraction means, which is one of the extraction means for extracting the coordinate data between the diffusion regions by using a polysilicon wiring at the coordinates as an input part, and on the same node as the designated point A sixteenth extracting means for extracting a drain region or a source region of a diffusion region separated by a certain polysilicon wiring as a diffusion region and extracting coordinate data of the diffusion region; And having a storage means for storing coordinate data extracted in detecting means.

According to a twelfth aspect of the present invention, there is provided a display means for displaying a layout of an integrated circuit, a designation means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a designation means for designating the layout. And a highlighting means for highlighting a wire passing through the specified point and a wire having the same node as the wire, wherein a polysilicon wire located at the same node as the designated point is used as an input unit, and the coordinates of the input unit are used. Extracting means for extracting data, extracting means for using a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point as an input unit, and extracting coordinate data of the input section, Extracting means for using a polysilicon wiring intersecting with a diffusion region at the same node as an input portion and extracting coordinate data of the input portion, a diffusion device at the same node as the designated point Extracting means for extracting, as an input part, a polysilicon wiring which intersects with the diffusion region closest to the designated point among the polysilicon wirings intersecting the region, and extracting coordinate data of the input part at two or more nodes at the same node as the designated point An extraction means for inputting a polysilicon wiring intersecting with the diffusion region as an input portion and extracting coordinate data between the diffusion regions; and an intersection located at the same node as the designated point and intersecting with two or more diffusion regions and being closest to the designated point. A twelfth extracting means, which is one of the extracting means for extracting the coordinate data between the diffusion regions by using the polysilicon wiring at the coordinates as an input part, and at the same node as the designated point Seventeenth extracting means for extracting coordinate data of a connecting part connecting the diffusion area and a wiring passing through the point designated by the designating means, and coordinate data extracted by the twelfth and seventeenth extracting means. Wiring display system characterized by having a storage means for storing data.

[0022]

According to the wiring display system of the present invention, after extracting all wirings having the same node as the selected wiring, text data added to the extracted wiring is extracted, and the input unit,
Since the coordinates of the output section are extracted and stored, or the polysilicon wiring serving as the gate input section is extracted as the input section and the diffusion region is extracted as the output section and the respective coordinates are stored, the layout diagram and the like can be moved immediately.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a wiring display system according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a wiring display system according to the present invention. This wiring display system has an input device 1 such as a mouse, a data processing device 2 and an output device 3 such as a CRT, and the data processing device 2 extracts the coordinates of a wiring extracting means 20 and an input unit, Input unit coordinate extraction storage unit 30 for storing the coordinates of the output unit and output unit coordinate extraction storage unit 40 for extracting the coordinates of the output unit and storing the coordinates
And

FIG. 2 is a flowchart for explaining the operation of the wiring display system.

A wiring is selected from the layout diagram displayed on the output device 3 in advance by designating a designated point on the wiring of interest by the input device 1 (step S2).
0). Next, from the information on the selected wiring (hereinafter, referred to as a selected wiring), all the wirings at the same node as the selected wiring, that is, through holes or contacts (hereinafter, referred to as contacts, etc.). All the wirings of the other wiring layers connected to the selected wiring via the selected wiring and all the wirings connected to the input and output terminals of each circuit via the selected wiring are extracted and highlighted (step S21, 22). The operation so far is the same as that of the conventional wiring display system. Next, if the layout diagram is located on the same node as the selected wiring and is provided with text data, from the text data or from the wiring layer information, input unit information is obtained to extract the coordinates of the input unit, It is stored (step S23). Next, output section information is obtained from text data or wiring layer information on the same node as the selected wiring, and output section coordinates are extracted and stored (step S24), thus ending the operation.

The extraction and storage of the coordinates of the text data in the layout diagram to which the text data is added will be further described with reference to the flowchart of FIG.

All input text data assigned to the selected wiring is extracted (step S30). Next, coordinates on the layout are extracted and stored for each piece of input text data (step S3).
1). Similarly, all output text data assigned to the selected wiring is extracted (step S32). Next, for each output text data, the coordinates on the layout are extracted and stored (step S33), and the operation ends. The frame surrounding this flowchart indicates that the upper frame portion performs coordinate extraction and coordinate storage of the input unit, and the lower frame portion indicates that coordinate extraction and coordinate storage of the output unit is performed. . The same applies to the following flowcharts.

The above operation will be described with reference to FIG. 18 showing a layout diagram. In order to select L1, the position of the designated point is designated at an arbitrary point on L1 by the input device 1. FIG.
The layout diagram of FIG. 8 is the same as the conventional operation until after the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted, that is, until step S23 in FIG. As shown in FIG. Next, I01 coordinates (XFB1I01, YFB) which is input text data (a character string generally starting with I) of the circuit block FB1.
1I01), the coordinates (XFB4I02, YFB4I0) of I02 which is the input text data of the circuit block FB4
2) Find and store the coordinates (XFB3I01, YFB3I01) of I01 which is the input text data of the circuit block FB3. Further, coordinates (XFB5O01, YFB5O01) of O01, which is output text data (a character string generally starting with O) of the circuit block FB5, are extracted and stored.

Therefore, if the user moves to the sequentially stored coordinate portions and checks the display of the layout diagram, the output portion can be identified, and the amount of movement on the layout is reduced. Also, by inputting the coordinates to a moving stage on which an LSI to be analyzed by an EB tester is mounted and controlling the movement, a signal to be observed (in this case, O01 of the circuit block FB5) can be immediately observed.

In this example, there is only one output part,
The number of outputs is not limited to one. For example, in a wiring connected to a bus, many outputs may be on the same node. Even in this case, since the user can move immediately by extracting and storing the coordinates of each output portion, it is possible to immediately confirm each output state, which is efficient.

FIG. 4 is a flowchart showing an operation of selecting and extracting input text data closest to a specified point where a selected wiring is specified, instead of extracting all input text data.

After selecting the selected wiring and highlighting all the wirings of the other wiring layers at the same node as the selected wiring, the screen display is as shown in FIG. Then, all input text data assigned to the selected wiring is extracted (step S40). Next, with respect to the input text data closest to the designated point where the selected wiring is designated, the coordinates on the layout are extracted and stored (step S).
41). Next, all output text data assigned to the selected wiring is extracted (step S42). Next, for each output text data, the coordinates on the layout are extracted and stored (step S4).
3).

The above operation will be described with reference to the layout diagram shown in FIG. In this case, the selected wiring is L1. FIG. 19 is the same as that of the related art until the display is emphasized. next,
In this case, the input text data closest to the designated point is I01 which is the input text data of the circuit block FB1.
And its coordinates (XFB1I01, YFB1I01)
Is searched for and memorized. Further, the coordinates (XFB5O01, Y) of O01 which is the output text data of the circuit block FB5
FB5O01) is obtained and stored.

Therefore, if the user moves to the sequentially stored coordinates and checks the layout display, the output portion can be found, and
A signal to be observed (in this case, the circuit block FB5) is reduced by reducing the amount of movement on the layout and inputting and controlling coordinates on the movement stage of the LSI to be analyzed by the EB tester.
O01) can be observed immediately. In addition, the input part observed (in this case, the I of the circuit block FB1)
01), the user can move immediately.

Next, the operation when no text data is added will be described.

FIG. 5 is a flowchart showing an operation for obtaining input section information and output section information from wiring layer information when text data is not added to the layout diagram.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. After this, MOS
Since a polysilicon wiring is used for the gate electrode of the transistor and is an input part, all the polysilicon wiring data connected to the selected wiring as the input part is extracted (step S50). Next, for each polysilicon wiring, the coordinates on the layout (one of the coordinates including the boundary surrounded by the figure) are extracted,
It is stored (step S51). Next, all diffusion region data connected to the selected wiring is extracted as an output unit (step S52). Next, the coordinates on the layout are extracted for each of the diffusion region data and stored (step S53), and the operation is completed.

For example, assume that L1 in FIG. 18 is selected as a selected wiring. The wiring connected to this is L21, L
22, L23, L3, L4, and L5, and other than I, which is the input text data of the circuit block FB1.
01, wiring corresponding to I02 which is input text data of the circuit block FB4, O01 which is output text data of the circuit block FB5, and O01 which is output text data of the circuit block FB3. Generally speaking, since the polysilicon wiring is used for the input portion, L1, L3 and L5 and I01 which is the input text data of the circuit block FB4, I02 which is the input text data of the circuit block FB4, and the circuit This is I01 which is input text data of the block FB3. The coordinates (one of the coordinates including the boundary surrounded by the figure) on the layout of these polysilicon wirings are extracted and stored.

FIG. 17A shows a layout diagram of an inverter as an example of the circuit block. This inverter includes a P-type diffusion region 101, an N-type diffusion region 111,
A polysilicon wiring 121 serving as a gate electrode penetrating through the P-type diffusion region 101 and the N-type diffusion region 111; a power supply wiring 131 of the first metal wiring layer; a ground wiring 141 of the first metal wiring layer; A contact C11 connecting the source region of the P-type diffusion region 101 to the ground line 1;
A contact C31 connecting the first metal interconnection layer 41 to the source region of the N-type diffusion region 111, and a contact C2 connecting the first metal wiring layer 151 to the drain region of the P-type diffusion region 101
1, a contact C41 connecting the first metal wiring 151 and the drain region of the N-type diffusion region 111, and a through hole C51 connecting the second metal wiring layer 161 and the first metal wiring layer 151, In the electric circuit diagram, FIG.
become that way.

I1 and O1 shown in FIG. 17C correspond to the polysilicon wiring 121 and the second metal wiring layer 151 in FIG. 17A, respectively.

If the polysilicon wiring corresponding to I01 which is the input text data of the circuit block FB1 is the polysilicon wiring 121 of FIG. 17A, the coordinates on the layout (on the boundary surrounded by the figure) Is extracted and stored. With respect to a portion corresponding to IX which is input text data of another circuit block FBX (X is a circuit block number), coordinates may be extracted and stored in the same manner.

Since the output section is all the diffusion regions connected to the selected wiring, in the layout diagram shown in FIG.
The pattern diffusion region 111 corresponds to this, and each coordinate on the layout (one of the coordinates including the boundary surrounded by the figure) is extracted and stored. If the coordinates of the polysilicon wiring as the input unit and the coordinates of the diffusion region as the output unit are extracted and stored, the same effects as those described above can be obtained. In other words, by moving to sequentially stored coordinates and checking the layout display, it is possible to know where the output portion is, to reduce the amount of movement on the layout, and to analyze by the EB tester.
By inputting and controlling the coordinates on the moving stage I, a signal to be observed can be immediately observed. Further, when the input part being observed is confirmed again, the user can move immediately.

FIG. 6 shows the operation of using the coordinates of the polysilicon wiring closest to the specified point where the selected wiring is specified as the input unit.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. Thereafter, all the polysilicon wiring data connected to the selected wiring as an input unit is extracted (step S60), and the polysilicon wiring data closest to the specified point where the selected wiring is specified is extracted (step S61). Then, for the extracted polysilicon wiring, the coordinates on the layout (one of the coordinates including the boundary surrounded by the figure) are extracted and stored (step S62). Next, all the diffusion region data connected to the selected wiring is extracted as an output unit (step S63). Next, for each of the diffusion region data, coordinates on the layout are extracted and stored (step S64), and the operation ends.

The above-described operation will be described with reference to the layout diagram shown in FIG. 18. When a designated point is designated on L1 by the input device 1 to make L1 a selected wiring, the designated point is closest to the designated point. Since the polysilicon wiring becomes L1, its coordinates may be extracted and stored. Therefore, storing the coordinates has the same effect as described above.

When an LSI is realized by a layout having only one metal wiring layer, a polysilicon wiring is always used when signal lines cross. As a layout diagram having only one metal wiring layer, for example, FIG.
FIG. 7B shows a layout diagram of the inverter of FIG.

This inverter has a P-type diffusion region 102,
An N-type diffusion region 112, a polysilicon wiring 122 serving as a gate electrode penetrating through the P-type diffusion region 102 and the N-type diffusion region 112, a power supply wiring 132 of a first metal wiring layer,
A contact C12 connecting the ground wiring 142 of the first metal wiring layer, the power supply wiring 132 and the source region of the P-type diffusion region 102, and a contact C32 connecting the ground wiring 142 and the source region of the N-type diffusion region 112. A contact C22 connecting the wiring 152 of the first metal wiring layer to the drain region of the P-type diffusion region 102; a contact C42 connecting the wiring 152 of the first metal wiring layer to the drain region of the P-type diffusion region 112; , A contact C23 for connecting the polysilicon wiring 123 to the first metal wiring 152, and a contact C43 for connecting the polysilicon wiring 124 to the first metal wiring 152, as shown in FIG.
(C).

I1 in FIG. 17C corresponds to the polysilicon wiring 122 in FIG. 17B, and O1 corresponds to the polysilicon wirings 123 and 124 in FIG. 17B.

In this case, since a large number of polysilicon wirings are extracted, only the polysilicon wiring 122 intersecting (penetrating) with the diffusion region is extracted in order to extract only the polysilicon wiring serving as the gate electrode of the MOS transistor.

FIG. 7 is a flowchart showing the operation of extracting the coordinates in the above case.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. After that, all the polysilicon wiring data that intersects with the diffusion region connected to the selected wiring as an input unit is extracted (step S7).
0). Next, for each polysilicon wiring, the coordinates on the layout (one of the coordinates including the boundary enclosed by the figure) are extracted and stored (step S).
71). Next, the coordinates on the layout are extracted for each of the diffusion region data (step S72), and the coordinates are stored (step S73), and the operation ends.

The above operation will be described with reference to the layout diagram of FIG. 18. Polysilicon wiring corresponding to I01 which is input text data of circuit block FB1 and circuit block FB
A polysilicon wiring corresponding to I01 which is the input text data of No. 3 is extracted and its coordinates are stored. Therefore, storing the coordinates has the same effect as described above.

FIG. 8 shows the same operation as that of extracting the polysilicon wiring closest to the specified point for specifying the selected wiring.
10 is a flowchart illustrating an operation of extracting a polysilicon wiring that intersects (penetrates) with a diffusion region closest to a specified point for specifying a selected wiring.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. Thereafter, all the polysilicon wiring data that intersects with the diffusion region connected to the selected wiring as an input unit is extracted (step S8).
0). Among the extracted selected wirings, polysilicon wiring data that intersects with the diffusion region closest to the specified point where the selected wiring is specified is extracted (step S81). Next, for the polysilicon wiring, the coordinates on the layout (one of the coordinates including the boundary surrounded by the figure) are extracted and stored (step S82). Next, all diffusion region data connected to the selected wiring is extracted as an output unit (step S83). Next, for each of the diffusion region data, coordinates on the layout are extracted and stored (step S84), and the operation is completed.

The above operation will be described with reference to the layout diagram of FIG. 18. Only the polysilicon wiring corresponding to the input text data I01 of the circuit block FB1 is extracted and the coordinates are stored. For example, in FIG. 17B, the polysilicon wiring 122 is formed. That is, the number of stored coordinates is smaller than that of storing all the polysilicon wirings. Storing the coordinates has the same effect as described above.

FIG. 9 shows the extraction of polysilicon wiring data that intersects two or more diffusion regions in the extraction of polysilicon wiring data that intersects with diffusion regions, and the extraction of coordinate data.
5 is a flowchart illustrating an operation of storing coordinates.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. Then, all the polysilicon wiring data that intersects with two or more diffusion regions connected to the selected wiring as an input unit is extracted (Step S90). Next, coordinates of the polysilicon wiring on the layout (one of the coordinates including the boundary surrounded by the figure) are extracted and stored (step S91). Next, all the diffusion region data connected to the selected wiring as an output unit is extracted (step S9).
2). Next, with respect to each diffusion area data, coordinates on the layout are extracted and stored (step S).
93), end the operation.

The above-mentioned operation will be described with reference to the layout diagram of FIG. 18 by way of example. A polysilicon wiring corresponding to I01 which is input text data of the circuit block FB1 and a polysilicon corresponding to I02 which is input text data of the circuit block FB4. The wiring and the polysilicon wiring corresponding to I01 which is the input text data of the circuit block FB3 are extracted and their coordinates are stored. For example, in the case of the circuit block shown in FIG.
A wiring corresponding to 22 is selected from each circuit block. This operation can reduce the number of stored coordinates.
Also, storing the coordinates has the same effect as described above.

FIG. 10 shows a case where two or more diffusion regions closest to the specified point for specifying the selected wiring are shown in the same manner as the operation of extracting the polysilicon wiring closest to the specified point for specifying the selected wiring. 9 is a flowchart illustrating an operation of extracting and storing intersecting (penetrating) polysilicon wirings.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. Thereafter, all the polysilicon wiring data that intersects with two or more diffusion regions connected to the selected wiring as an input unit is extracted (step S100). From the polysilicon wiring data, polysilicon wiring data that intersects with two or more diffusion regions closest to the specified point where the selected wiring is specified is extracted (step S101). Next, with respect to the polysilicon wiring, coordinates on the layout (one of coordinates including a boundary surrounded by the figure) are extracted and stored (step S102). Next, all the diffusion region data connected to the selected wiring is extracted as an output unit (step S103). Next, with respect to each diffusion region data, coordinates on the layout are extracted and stored (step S104), and the operation ends.

The above-mentioned operation will be described with reference to the layout diagram of FIG. 18. Since the selected wiring is L1, the designated point for designating the wiring is on L1, so that the input text data I01 of the circuit block FB1 is Only the corresponding polysilicon wiring is extracted and its coordinates are stored. For example,
In the circuit block shown in FIG. 17B, the polysilicon wiring 122 is used. That is, the number of coordinates to be stored can be reduced. Also, storing the coordinates has the same effect as described above.

FIG. 11 is a flowchart of the operation for reducing the number of coordinates of the output unit to be stored. This operation is an effective operation in a case where the output unit is simply made of two or more diffusion regions.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. After that, all the polysilicon wiring data connected to the selected wiring is extracted (Step S110). Next, with respect to each polysilicon wiring, coordinates on the layout (one of coordinates including a boundary surrounded by the figure) are extracted and stored (step S111). Next, all diffusion region data connected to the selected wiring is extracted as an output unit (step S112). Next, for each of the diffusion region data, coordinates on the layout are extracted and stored (step S113). Next, if there are two diffusion area data coordinates, a position between the coordinate data of the two diffusion areas (for example, the middle of the two coordinates) is obtained, and this is set as a new coordinate (step S114). You may erase it.

This coordinate data was extracted by using all the polysilicon wirings connected to the selected wiring as the input unit. However, the polysilicon wiring closest to the designated point and the polysilicon crossing the diffusion region were used as the input unit. It is also possible to use a silicon wiring, a polysilicon wiring that intersects with the diffusion region and is closest to the designated point, a polysilicon wiring that intersects with two or more diffusion regions and is closest to the designated point, or the like.

The above operation will be described with reference to the layout diagram of FIG. 18 as an example. Circuit block FB as two or more diffusion regions
The spread area specified by the spread area data corresponding to O01 which is the output text data of No. 5 is, for example, if the circuit block FB5 is a circuit block of the inverter shown in the layout diagram of FIG. Mold diffusion region 10
The coordinates store intermediate coordinate data between the two coordinate data of 1 and the N-type diffusion region 111. Also, storing the coordinates has the same effect as described above.

FIG. 12 shows a case where the LSI is a CMOS structured LSI designed using MOS transistors.
It is a flowchart of the operation | movement which reduces the number of coordinates to memorize | store.

After selecting the selected wiring and highlighting all the wirings of the other wiring layers at the same node as the selected wiring, the screen display is as shown in FIG. After that, all the polysilicon wiring data connected to the selected wiring is extracted (step S120). Next, for each polysilicon wiring, coordinates on the layout (one of coordinates including the boundary surrounded by the figure) are extracted and stored (step S121). Next, all the diffusion region data connected to the selected wiring is extracted as an output unit (step S122). Next, with respect to each diffusion region data, coordinates on the layout are extracted and stored (step S123). Next, between each of the coordinates of the N-type diffusion region data and the coordinates of the P-type diffusion region data, a position between the coordinate data of the two diffusion regions (for example, an intermediate point between the two coordinates) is obtained, and is calculated as a new coordinate. (Step S124), and the operation ends. The two original coordinates may be deleted.

The coordinate data is extracted by using all the polysilicon wirings connected to the selected wiring as the input unit. However, as the input unit, the polysilicon wiring closest to the designated point and the diffusion region Intersecting polysilicon wiring,
A polysilicon wiring that intersects with the diffusion region and is closest to the designated point, a polysilicon wiring that intersects with two or more diffusion regions and is closest to the designated point, or the like may be used.

The above-mentioned operation will be described with reference to the layout diagram of FIG. 18 as an example. The diffusion area data corresponds to O01 which is the output text data of the circuit block FB5. For example, the circuit block FB5 is shown in FIG. In the case of the inverter circuit block shown in the layout diagram of FIG. 7, the coordinates are those at which intermediate coordinate data between the two coordinate data of the P-type diffusion region 101 and the N-type diffusion region 111 is stored.

FIG. 13 is a flowchart of an operation of extracting a drain region or a source region from a diffusion region and storing the coordinates of the extracted region.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. Thereafter, all the polysilicon wiring data connected to the selected wiring is extracted (step S130). Next, for each polysilicon wiring, the coordinates on the layout (one of the coordinates including the boundary surrounded by the figure) are extracted and stored (step S131). Next, all diffusion region data connected to the selected wiring is extracted as an output unit (step S132). The diffusion region is generally formed by combining a source region, a drain region, and a gate region. Thus, it may refer to a fairly large area. However, the region where the polysilicon wiring region is removed from the diffusion region becomes a source region and a drain region,
The region becomes smaller than the diffusion region before removing the polysilicon wiring region. From this area, the diffusion area data connected to the selected wiring is extracted (step S13).
3). Next, with respect to each diffusion area data, coordinates on the layout are extracted and stored (step S).
134).

The coordinate data is extracted by using all the polysilicon wirings connected to the selected wiring as the input unit. However, as the input unit, the polysilicon wiring closest to the designated point, the diffusion region, Intersecting polysilicon wiring,
A polysilicon wiring that intersects with the diffusion region and is closest to the designated point, a polysilicon wiring that intersects with two or more diffusion regions and is closest to the designated point, or the like may be used.

The above operation will be described with reference to FIG. 17A as an example. The region where the contact C21 of the P-type diffusion region 101 exists and the contact C41 of the N-type diffusion region 111
Is the region after the polysilicon wiring region is removed. The effect of storing the coordinates is the same as described above.

FIG. 14 is a flowchart of the operation of extracting and storing at least one contact connecting the diffusion region and the selected wiring.

After the selected wiring is selected and all the wirings of the other wiring layers at the same node as the selected wiring are highlighted and displayed, the screen display is as shown in FIG. After that, all the polysilicon wiring data connected to the selected wiring is extracted (step S140). Next, for each polysilicon wiring, the coordinates on the layout (one of the coordinates including the boundary surrounded by the figure) are extracted and stored (step S141). Next, extraction of all the diffusion region data connected to the selected wiring as an output unit is executed (step S142). Since the extracted diffusion region data is connected to the selected wiring by at least one contact, this contact data is extracted (step S143). Next, for each piece of contact data, coordinates on the layout are extracted and stored (step S144), and the operation ends.

The coordinate data was extracted by using all the polysilicon wirings connected to the selected wiring as the input unit. However, as the input unit, the polysilicon wiring closest to the designated point and the diffusion region Intersecting polysilicon wiring,
A polysilicon wiring that intersects with the diffusion region and is closest to the designated point, a polysilicon wiring that intersects with two or more diffusion regions and is closest to the designated point, or the like may be used.

The above operation will be described with reference to FIG. 17A as an example. The contact C21 of the P-type diffusion region 101 and the contact C41 of the N-type diffusion region 111 correspond to the contact from which the data is extracted. Storing the coordinates of the contact has the same effect as described above.

[0079]

As is clear from the above description, in the wiring display system of the present invention, when a wiring of interest is selected, when a layout diagram with text is used, the same node as the selected wiring is used. By separating the input and output parts from the text data assigned to the wiring layer and obtaining the coordinates, it is possible to immediately move to a part to be observed based on the coordinates. When using a layout diagram without text, the polysilicon wiring is used as the input part, and the diffusion region is recognized as the output part.
By obtaining the coordinates, it is possible to immediately move to a portion desired to be observed based on the coordinates, which has the effect of reducing the number of times the layout diagram is displayed in the operation of moving the display screen.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a wiring display system according to the present invention.

FIG. 2 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 3 is a flowchart illustrating an operation of the wiring display system according to the present invention.

FIG. 4 is a flowchart illustrating an operation of the wiring display system according to the present invention.

FIG. 5 is a flowchart illustrating an operation of the wiring display system according to the present invention.

FIG. 6 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 7 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 8 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 9 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 10 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 11 is a flowchart illustrating an operation of the wiring display system according to the present invention.

FIG. 12 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 13 is a flowchart illustrating an operation of the wiring display system according to the present invention.

FIG. 14 is a flowchart illustrating the operation of the wiring display system according to the present invention.

FIG. 15 is a block diagram showing a configuration of a conventional wiring display system.

FIG. 16 is a flowchart illustrating an operation of a conventional wiring display system.

FIG. 17 (a) is a layout diagram example using up to a second metal layer of an inverter as a function block. (B) It is an example of a layout diagram using up to the first metal layer of the inverter as a function block. (C) It is a circuit diagram of the inverter of FIG. 15-a or FIG. 15-b.

FIG. 18 is a layout diagram displayed on a display for selecting wiring.

FIG. 19 is an example in which a selected wiring is highlighted in a conventional wiring display system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Input device 2 Data processing device 3 Display device 20 Wiring extraction means 30 Input part coordinate extraction storage means 40 Output part coordinate extraction storage means t1, t2, t3, t4 Through hole D Display screen FB1, FB2, FB3, FB4, FB5 Circuit Block I01, I02, O01 Text L1 Wiring selected by input means L3, L4, L5, L21, L22, L23, L24
Wirings 101, 102 P-type diffusion regions 111, 112 N-type diffusion regions 121, 122 Polysilicon wiring layers 131, 132 Power supply wirings 141, 142 Ground wirings 151, 152 First metal wiring layer 161 Second metal wiring layers C11, C12, C21, C22, C23, C31, C
32, C41, C42, C43 Contact C51 Through hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁶ , DB name) G06F 17/50 H01L 21/82 JICST file (JOIS) Patent file (PATOLIS)

Claims (12)

(57) [Claims] A display unit for displaying a layout of the integrated circuit; a designating unit for designating an arbitrary point on a wiring of the layout displayed by the display unit; a wiring passing through the point designated by the designating unit; And a highlighting means for highlighting a wire having the same node as the wire. In the wire display system, a first data extracting unit extracts coordinate data on a layout of text data indicating an input unit at the same node as the designated point. Extracting means; second extracting means for extracting coordinate data on a layout of text data indicating an output unit at the same node as the designated point; and extracting the coordinate data extracted by the first and second extracting means. A wiring display system comprising: a storage unit for storing. 2. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, and a wiring passing through the point designated by the designating means. And a highlighting means for highlighting a wire having the same node as the wire. In the wire display system, a first data extracting unit extracts coordinate data on a layout of text data indicating an input unit at the same node as the designated point. Extracting means; third extracting means for extracting coordinate data closest to the designated point from the coordinate data extracted by the first extracting means; and an output unit located at the same node as the designated point. A second extracting unit for extracting coordinate data on the layout of the text data to be shown; and a storing unit for storing the coordinate data extracted by the second and third extracting units. Wiring display system, characterized in that. 3. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, a wiring passing through a point designated by the designating means, and An emphasizing means for emphasizing a wire having the same node as the wire, wherein a polysilicon wire at the same node as the designated point is used as an input unit, and a coordinate data of the input unit is extracted. 4, an extraction unit, and a diffusion region at the same node as the designated point is set as an output unit.
A wiring display system comprising: fifth extraction means for extracting the coordinate data of the output unit; and storage means for storing the coordinate data extracted by the fourth and fifth extraction means. 4. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wire having the same node as the wire, wherein a polysilicon wire at the same node as the designated point is used as an input unit, and a coordinate data of the input unit is extracted. Extracting means for extracting coordinate data closest to the designated point from the coordinate data extracted by the fourth extracting means; and diffusion at the same node as the designated point. The area is the output part,
A wiring display system comprising: fifth extraction means for extracting coordinate data of the output unit; and storage means for storing the coordinate data extracted by the fifth and sixth extraction means. 5. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein a polysilicon wiring intersecting a diffusion region at the same node as the designated point is used as an input unit, and the coordinate data of the input unit is used. And a diffusion region located at the same node as the designated point as an output unit.
A wiring display system comprising: a fifth extraction unit for extracting coordinate data of the output unit; and a storage unit for storing the coordinate data extracted by the fifth and seventh extraction units. 6. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of a layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein a polysilicon wiring intersecting a diffusion region at the same node as the designated point is used as an input unit, and the coordinate data of the input unit is used. A seventh extraction unit that extracts coordinate data closest to the specified point from the coordinate data extracted by the seventh extraction unit; The diffusion area at the node is used as the output,
A wiring display system comprising: a fifth extraction unit for extracting coordinate data of the output unit; and a storage unit for storing the coordinate data extracted by the fifth and eighth extraction units. 7. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of a layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein the polysilicon wiring intersecting with two or more diffusion regions at the same node as the designated point is used as an input unit, Ninth extracting means for extracting coordinate data of the following, tenth extracting means for extracting coordinates between the coordinate data extracted by the ninth extracting means, and a diffusion region at the same node as the designated point Is the output section,
A wiring display system comprising: fifth extraction means for extracting coordinate data of the output unit; and storage means for storing the coordinate data extracted by the fifth and tenth extraction means. 8. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein the polysilicon wiring intersecting with two or more diffusion regions at the same node as the designated point is used as an input unit, Ninth extracting means for extracting coordinate data of the following, tenth extracting means for extracting coordinates between the coordinate data extracted by the ninth extracting means, and coordinates extracted by the tenth extracting means Extracting the coordinate data closest to the specified point from the data
Extraction means, and a diffusion area at the same node as the designated point as an output unit,
A wiring display system comprising: fifth extraction means for extracting coordinate data of the output unit; and storage means for storing the coordinate data extracted by the fifth and eleventh extraction means. 9. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein the extracting means extracts a coordinate data of the input part using a polysilicon wiring at the same node as the designated point as an input unit. Extracting means for using, as an input unit, a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point, and extracting coordinate data of the input unit; Extracting means for using a polysilicon wiring intersecting with the diffusion region as an input portion and extracting coordinate data of the input portion; and a polysilicon intersecting with the diffusion region at the same node as the designated point. Extracting means for using a polysilicon wiring which intersects with the diffusion area closest to the designated point as an input part and extracting coordinate data of the input part, intersecting at least two diffusion areas at the same node as the designated point Extracting means for inputting a polysilicon wiring as an input unit and extracting coordinate data between the diffusion regions; and a poly at the same node as the designated point, intersecting with two or more diffusion regions and being at the nearest coordinates from the designated point. A twelfth extraction means, which is one of the extraction means for extracting coordinate data between the diffusion areas using a silicon wiring as an input unit, and two diffusion areas at the same node as the designated point As output units, a thirteenth extraction unit for extracting coordinate data of the two output units, and a third extraction unit for extracting coordinate data between the coordinate data extracted by the thirteenth extraction unit. Wiring display system characterized in that it has 4 extraction means, and storage means for storing coordinate data extracted in the twelfth and fourteenth extraction means. 10. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of a layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein the extracting means extracts a coordinate data of the input part using a polysilicon wiring at the same node as the designated point as an input unit. Extracting means for using, as an input unit, a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point, and extracting coordinate data of the input unit; Extracting means for using a polysilicon wiring intersecting with the diffusion region as an input portion and extracting coordinate data of the input portion, a policy intersecting with the diffusion region at the same node as the designated point An extracting means for using a polysilicon wiring intersecting the diffusion region closest to the designated point among the interconnects as an input unit and extracting coordinate data of the input unit; intersecting at least two diffusion regions at the same node as the designated point Extracting means for inputting a polysilicon wiring as an input unit and extracting coordinate data between the diffusion regions; and a poly at the same node as the designated point and intersecting with two or more diffusion regions and located at the nearest coordinates from the designated point. A twelfth extraction means, which is one of the extraction means for extracting coordinate data between the diffusion areas using a silicon wiring as an input unit, and two diffusion areas at the same node as the designated point As
A fifteenth extracting means for extracting one N-type diffusion region and one P-type diffusion region one by one, extracting coordinate data of each of the extracted regions, and extracting coordinate data between the coordinate data; And a storage device for storing the coordinate data extracted by the fifteenth extraction device. 11. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of the layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein the extracting means extracts a coordinate data of the input part using a polysilicon wiring at the same node as the designated point as an input unit. Extracting means for using, as an input unit, a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point, and extracting coordinate data of the input unit; Extracting means for using a polysilicon wiring intersecting with the diffusion region as an input portion and extracting coordinate data of the input portion, a policy intersecting with the diffusion region at the same node as the designated point An extracting means for using a polysilicon wiring intersecting the diffusion region closest to the designated point among the interconnects as an input unit and extracting coordinate data of the input unit; intersecting at least two diffusion regions at the same node as the designated point Extracting means for inputting a polysilicon wiring as an input unit and extracting coordinate data between the diffusion regions; and a poly at the same node as the designated point, intersecting with two or more diffusion regions and being at the nearest coordinates from the designated point. A twelfth extraction means, which is one of the extraction means for extracting coordinate data between the diffusion regions with the silicon wiring as an input part, and a polysilicon wiring on the same node as the designated point A drain region or a source region of the diffusion region divided by the above is defined as a diffusion region, and a sixteenth extraction unit for extracting coordinate data of the diffusion region; Wiring display system characterized by having a storage means for storing coordinate data. 12. A display means for displaying a layout of an integrated circuit, a designating means for designating an arbitrary point on a wiring of a layout displayed by the display means, a wiring passing through a point designated by the designating means, An emphasizing means for emphasizing a wiring having the same node as the wiring, wherein the extracting means extracts a coordinate data of the input part using a polysilicon wiring at the same node as the designated point as an input unit. Extracting means for using, as an input unit, a polysilicon wiring closest to the designated point among the polysilicon wirings at the same node as the designated point, and extracting coordinate data of the input unit; Extracting means for using a polysilicon wiring intersecting with the diffusion region as an input portion and extracting coordinate data of the input portion, a policy intersecting with the diffusion region at the same node as the designated point An extracting means for using a polysilicon wiring intersecting the diffusion region closest to the designated point among the interconnects as an input unit and extracting coordinate data of the input unit; intersecting at least two diffusion regions at the same node as the designated point Extracting means for inputting a polysilicon wiring as an input unit and extracting coordinate data between the diffusion regions; and a poly at the same node as the designated point, intersecting with two or more diffusion regions and being at the nearest coordinates from the designated point. A twelfth extracting means, which is one of the extracting means for extracting coordinate data between the diffusion areas with a silicon wiring as an input part, and a diffusion area at the same node as the designated point; A seventeenth extraction unit for extracting coordinate data of a connecting portion connecting a wire passing through a point designated by the designation unit, and a storage unit for storing the coordinate data extracted by the twelfth and seventeenth extraction units. Wiring display system characterized by a means.