JP3358484B2 - Display device manufacturing method and manufacturing device, and display element marking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device widely used in OA equipment such as a copying machine, a facsimile and a printer, a personal computer and a word processor, and a handy terminal equipment and a portable information communication equipment. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method and a manufacturing apparatus for a display device, and a marking device for the display device, and particularly to a display device capable of accurately performing alignment when electrically connecting a display element and a drive circuit with a simple configuration. And a marking device for a display element.

[0002]

2. Description of the Related Art Hitherto, it has been necessary to manufacture liquid crystal display devices widely used in OA equipment such as copiers and printers of this type, or personal computers and word processors, as well as electronic equipment such as handy terminal equipment and portable information communication equipment. The step of electrically connecting a transparent electrode of a liquid crystal display element and a drive circuit for driving the liquid crystal display element is performed. At this time, in order to electrically connect the liquid crystal display element and a driving circuit for driving the liquid crystal display element, a transparent electrode of the liquid crystal display element and a driving IC constituting the driving circuit are required.
(Tape Automated Bondin) in which electrode patterns for connection and connection are integrally formed in a tape shape.
g) must be accurately aligned.

[0003] As a technique relating to such alignment between the liquid crystal display element and the TAB, for example, Japanese Patent Laid-Open No. 6-35 is disclosed.
Japanese Patent Application Laid-Open No. 0246, JP-A-6-138425, and JP-A-8-248431 have already been proposed. The technology disclosed in these publications basically employs a linear transparent substrate provided on the surfaces of two transparent insulating substrates 100 and 101 so as to be orthogonal to each other at a predetermined pitch, as shown in FIG. Electrode 1
When forming the layers 02 and 103 by patterning, marks 104 and 105 for directly aligning with the drive circuit are formed at the corners of the transparent insulating substrates 100 and 101, and the marks 104 and 105 for alignment are formed. 105 when the two transparent insulating substrates 100 and 101 are overlapped with the liquid crystal interposed therebetween.
It is configured to be used for positioning between the transparent electrodes 102 and 103 of 0 and 101 and the driving circuit.

However, recently, as the above-mentioned liquid crystal display element, Japanese Patent Application Laid-Open No. H05-6106 filed by Idemitsu Kosan Co., Ltd.
For example, as disclosed in Japanese Unexamined Patent Application Publication No. Hei. After a laminating process of applying a liquid crystal made of a ferroelectric polymer liquid crystal or the like to form a film, and laminating a pair of transparent insulating sheets facing each other, the film is passed through a plurality of rollers to perform an alignment process by bending (alignment). (Process step) has already been proposed, and some products are being commercialized. Since a liquid crystal display device using a liquid crystal composed of such a ferroelectric polymer liquid crystal can be continuously manufactured by a lamination process and an alignment treatment process of a wide and long transparent insulating sheet, a large amount of It is easy to produce, can greatly reduce the cost, and because it is possible to manufacture all the materials that compose the liquid crystal display element with a flexible polymer material, a flexible liquid crystal display element can be manufactured. Since the liquid crystal itself made of a ferroelectric polymer liquid crystal has a memory property, it has an excellent characteristic that the display screen can be held even when the application of the voltage is stopped.

[0005]

However, the above-mentioned prior art has the following problems. That is, as described above, when a liquid crystal display element that is easily mass-produced and is used as a liquid crystal display element used in the liquid crystal display device is used, the liquid crystal display element can be subjected to the laminating step and the alignment processing step. It is manufactured continuously by the above method. Thereafter, the manufactured liquid crystal display device is cut out to a predetermined size except for a defective portion, and used as an actual liquid crystal display device. Therefore, since a defective portion is removed in the manufacturing process of the liquid crystal display element, it is impossible to simultaneously form alignment marks on the individual liquid crystal display elements before cutting out the liquid crystal display element. Therefore, when positioning the drive circuit on the transparent electrode of the liquid crystal display element, the transparent electrode of the liquid crystal display element is integrated with the driving IC and the electrode pattern for connection while visually confirming the transparent electrode of the liquid crystal display element. There is a problem that the alignment with the TAB formed in a tape shape must be performed, and the alignment work with the TAB is very troublesome and difficult, and cannot be adapted to automation. .

In order to solve such a problem, the liquid crystal display element 110 is cut into a predetermined size to be actually used, and then, as shown in FIG. As another method, it is conceivable to perform positioning by abutting against the abutting pin 111 and newly forming a positioning mark 112 at a predetermined position of the liquid crystal display element 110.

However, in this case, the liquid crystal display element 11
When the alignment mark 112 is formed at 0, the cutout dimension of the liquid crystal display element 110 has a tolerance of about 0.3 mm, based on the edge of the liquid crystal display element 110 cut out to a predetermined size. For this reason, an error is inevitably generated between the alignment mark and the electrode, and a new problem arises in that the liquid crystal display element and the TAB cannot be electrically connected with high accuracy.

In order to solve such a problem, when forming the alignment mark 112, the transparent electrode of the liquid crystal display element 110 cut out to a predetermined size is visually confirmed while the alignment mark 112 is formed. In the case where the mark 112 is formed, it is difficult to form the alignment mark, and there is a problem that automation cannot be performed.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to eliminate troublesome work when connecting a drive circuit to a display element. Another object of the present invention is to provide a manufacturing method and a manufacturing apparatus for a display device, which can easily and accurately align a display element with a driving circuit, and a marking device for a display element.

[0010]

That is, according to the first aspect of the present invention, as shown in FIG. 1, an electrode 2 of a display element 1 capable of storing a display image is energized to display the display. A predetermined pattern is displayed and stored in the element 1,
A method for manufacturing a display device, characterized in that the stored pattern 4 is used as an alignment mark when the drive circuit 3 is connected to the electrode 2 of the display element 1. In FIG. 1, reference numeral 5 denotes a positioning mark provided on the drive circuit 3 side, and reference numeral 6 denotes a drive element of the drive circuit 3.

According to a second aspect of the present invention, the predetermined pattern to be displayed on the display element is defined by a corner in a displayable area of the display element and a predetermined pattern in the vertical and horizontal directions from the corner. 2. The method for manufacturing a display device according to claim 1, wherein the display device is formed at positions spaced apart from each other.

Further, according to a third aspect of the present invention, a display device is manufactured by connecting a drive circuit for driving the display element to an electrode of the display element capable of storing a display image. In the apparatus manufacturing apparatus, by energizing a predetermined electrode of the display element, energization display means for displaying and storing a predetermined pattern on the display element as an alignment mark, and energization by the energization display means, Detecting means for detecting a position of a predetermined display pattern displayed on the element, and moving a drive circuit connected to an electrode of the display element based on position information of the predetermined display pattern detected by the detecting means; An apparatus for manufacturing a display device, comprising: positioning means for positioning an electrode of a display element and a drive circuit.

[0013] Still further, the invention described in claim 4 is as follows.
In order to connect a drive circuit for driving the display element to an electrode of the display element capable of storing a display image, an alignment mark for aligning the display element with the drive circuit is formed. In a marking device for a display element, the display element is provided with energization display means for energizing a predetermined electrode of the display element to display and store a predetermined pattern as an alignment mark on the display element. Marking device. Further, in the invention described in claim 5, the energization display means includes a mounting means for mounting the display element, and a position of an electrode to be energized to the display element mounted on the mounting means. 5. The display device marking apparatus according to claim 4, further comprising a plurality of probes provided on the display device, and positioning means for positioning the probes and electrodes of the display device.

As a display element capable of storing a display image, for example, JP-A-5-61061 and JP-A-5-27353 filed by Idemitsu Kosan Co., Ltd.
As disclosed in, for example, Japanese Patent Application Publication No. 1 (1999), a liquid crystal made of a ferroelectric polymer liquid crystal or the like is applied to one or both of a pair of transparent insulating sheets on which a transparent electrode is deposited, and a film is formed. After laminating a pair of transparent insulating sheets, the sheet is manufactured by performing an orientation treatment by bending by passing between a plurality of rollers. However, the display element capable of storing the display image is not limited to this, and may be any element capable of storing the display image, for example, by using a twisting ball panel display or the like. Is also good. Here, the twisting ball panel display is described in US Pat.
As disclosed in No. 3, for example, a large number of minute spheres colored half in black are dispersed in a liquid, and the minute spheres are rotated by an electric field or a magnetic field, thereby inverting black and white to display an image. Is what you do.

According to the first aspect of the present invention, a predetermined pattern is displayed and stored in the display element by applying a current to a predetermined electrode of the display element, and the stored pattern is stored in the display element. It is configured to be used as an alignment mark when a drive circuit is connected to the electrode of the above, so by a simple operation of energizing a predetermined electrode of the display element, the alignment mark is placed at a predetermined position of the display element. When the display element and the drive circuit are aligned using the alignment marks, the alignment between the display element and the drive circuit can be easily performed.
Further, since the electrodes of the display element are formed with high accuracy, the alignment mark can be formed with high accuracy only by applying a current to a predetermined electrode of the display element, and the alignment between the display element and the drive circuit is performed. Can be performed with high accuracy.

According to the second aspect of the present invention, the predetermined pattern displayed on the display element is defined by a corner in the displayable area of the display element and a predetermined pattern in the vertical and horizontal directions from the corner. Since it is configured to be formed at intervals, even if the position where the display element is installed is shifted in the vertical direction, the horizontal direction, or the diagonal direction, the position shift of the display element is detected by these plural patterns. Thus, the alignment between the display element and the drive circuit can be performed with higher accuracy.

Further, according to the third aspect of the present invention,
An energization display means for energizing a predetermined electrode of the display element to display and store a predetermined pattern as an alignment mark on the display element, and a predetermined energization performed by the energization display means and displayed on the display element. Detecting means for detecting the position of the display pattern, and moving the drive circuit connected to the electrode of the display element based on the position information of the predetermined display pattern detected by the detection means. And a positioning means for performing positioning with respect to the display element, by energizing a predetermined electrode of the display element mounted on the manufacturing table of the display device by the energization display means, A predetermined pattern is displayed as an alignment mark, and the position of the predetermined display pattern is detected by a detecting means.
Based on the position information of the predetermined display pattern detected by the detection unit, the driving circuit connected to the electrode of the display element is moved by the positioning unit, and the positioning of the electrode of the display element and the driving circuit is performed. No troublesome work is required, and it is possible to easily and accurately align the display element with the drive circuit.

Further, the invention according to the fourth aspect of the present invention is provided with an energization display means for energizing a predetermined electrode of the display element to display and store a predetermined pattern as an alignment mark on the display element. With such a configuration, a predetermined pattern can be displayed as a positioning mark on the display element by supplying a current to a predetermined electrode of the display element by the power supply display means. Thus, by performing the alignment between the display element and the drive circuit, it is possible to easily perform the alignment work between the two. Further, since the electrodes of the display element are formed with high accuracy, the alignment mark can be formed with high accuracy only by applying a current to a predetermined electrode of the display element, and the alignment between the display element and the drive circuit is performed. Can be performed with high accuracy. Further, in the invention described in claim 5, the energization display means includes a mounting means for mounting the display element, and a position of an electrode to be energized to the display element mounted on the mounting means. The plurality of probes provided in the, and configured to include positioning means for positioning the probe and the electrodes of the display element, in a state where the display element is mounted on the mounting means, When a plurality of probes are energized to the electrodes to be energized with respect to the display element mounted on the mounting means, the positions of the probes and the electrodes of the display element are adjusted by alignment means, whereby By energizing a predetermined electrode, a predetermined pattern can be accurately displayed as an alignment mark.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIGS. 2 and 3 are a plan view and a sectional view, respectively, showing an input / output device capable of inputting information to which a display device manufactured by a manufacturing method according to an embodiment of the present invention is applied. .

The input / output device 40 according to this embodiment is
As shown in FIG. 3, the input / output device 40 is roughly divided.
The liquid crystal display panel 41 includes a liquid crystal display panel 41 on which various screens are displayed in accordance with the function of the device to which is applied, and a membrane switch 42 disposed below the liquid crystal display panel 41.

The liquid crystal display panel 41 is formed of a reflective liquid crystal display panel and is formed in a flexible sheet. The liquid crystal display panel 41 is configured by disposing a pair of polarizing plates 47, 47 on both front and back sides of the liquid crystal display unit 43, and the pair of polarizing plates 47, 47 is directly laminated on the liquid crystal display unit 43. It is not necessary that another layer or a plate-like member be interposed between the pair of polarizing plates 47, 47 and the liquid crystal display unit 43. As shown in FIG. 3, the liquid crystal display section 43 of the liquid crystal display panel 41 is made of a pair of PES (polyether sulfone) in which ITO electrodes 44 as transparent electrodes are linearly deposited at a predetermined pitch. A liquid crystal 46 is laminated between the sheets 45, 45. In addition, outside the pair of PES sheets 45, 45,
Polarizing plates 47, 47 are arranged. The pair of PES
ITO electrodes 44 deposited on sheets 45, 45, respectively
Are arranged linearly at a predetermined pitch so as to be orthogonal to each other, and the upper electrode 44 and the lower electrode 44 form a matrix. Further, a liquid crystal 46 laminated between the pair of PES sheets 45, 45 is provided.
For example, a ferroelectric polymer liquid crystal is used, but the present invention is not limited to this. Of course, other types of liquid crystal may be used as long as they have a memory property.

The liquid crystal display section 43 of the liquid crystal display panel 41
For example, the basic configuration and operation are described in Patent No. 25
Although a configuration as disclosed in Japanese Patent Application Laid-Open No. 12290/1992 or the like is used, more specifically, Japanese Patent Application Laid-Open Nos.
A structure configured as disclosed in, for example, Japanese Patent No. 273531 can be used. The liquid crystal display section 43 of the liquid crystal display panel 41 includes, for example, a pair of PES sheets 45, 4 on which ITO electrodes 44, 44 serving as transparent electrodes are deposited.
5 is coated with a liquid crystal 46 made of a ferroelectric polymer liquid crystal or the like to form a film, and after laminating a pair of PES sheets 45 facing each other, it is bent by passing between a plurality of rollers. It is manufactured by subjecting to an orientation treatment. Here, the liquid crystal display panel 41 using the liquid crystal 46 made of a ferroelectric polymer liquid crystal has a memory property, and therefore has a characteristic that the display screen can be held even when the voltage application is stopped. Have.

The front side of the liquid crystal display panel 41,
That is, on the viewing side, a buffer layer 48 made of a visibility improving sheet for preventing irregular reflection and the like and improving the visibility of the liquid crystal display panel 41 is provided between the PES sheet 45 and the polarizing plate 47 in a laminated state. Are located. As the buffer layer 48 made of the visibility improving sheet, for example, a material made of a gel-like resin or a rubber-like resin is used. On the surface of the buffer layer 48 made of the visibility improving sheet, a polarizing plate 47 is laminated to disclose the density of a display image based on a change in the optical anisotropy of the liquid crystal to which an electric field is applied. ing. At this time, if the refractive index of the buffer layer 48 interposed between the flexible liquid crystal display unit 43 and the polarizing plate 47 is significantly different from that of other members, external light is reflected, and the liquid crystal display The display quality of the panel 41 deteriorates. Therefore, the buffer layer 48 made of the visibility improving sheet has a refractive index of air of 1.0, while the synthetic resin constituting the ferroelectric liquid crystal 46 and the polarizing plate 47 has a refractive index of 1. Since the refractive index of the gel-like resin or the rubber-like resin of the transparent buffer layer 48 is around 1.4, it is optimal to use one having a refractive index of around 1.4.

As a material suitable for this, for example, the visibility improving sheet manufactured by Nitto Denko Corporation has a refractive index of 1.46. Therefore, the buffer layer 48 is made of, for example, Nitto having an adhesiveness of 400 μm in thickness. A visibility improving sheet made by Denko Corporation is used.
1 and the polarizing plate 47 are interposed in a state of being adhered and held by the adhesiveness. As the visibility improving sheet used as the buffer layer 48, for example, a sheet made of a gel resin such as an acrylic polymer or a rubber resin such as a silicone resin polymer is used.

On the back side of the liquid crystal display section 43,
The polarizing plates 47 are stacked and arranged without any member interposed therebetween, and the polarizing plates 47 on the back side are arranged to be orthogonal to the polarizing plates 47 arranged on the front side of the liquid crystal display panel 41. I have. Further, below the polarizing plate 47 disposed on the back surface side of the liquid crystal display panel 41, a reflecting plate 49 for reflecting light incident from the front side of the liquid crystal display panel 41 is laminated. As the reflection plate 49, for example, aluminum foil or the like is used. Further, a reinforcement against the pressing force of the liquid crystal display panel 41 and a membrane switch 4 described later are provided below the reflection plate 49.
The reinforcing plates 50 for improving the resolution of No. 2 are stacked and arranged. As the reinforcing plate 50, for example, an acrylic plate or a plastic plate is used.

Further, on the back side of the reinforcing plate 50, a membrane switch 42 as a coordinate detecting means for detecting the coordinates of the position pressed by a finger or a pen from the front side of the liquid crystal display panel 41 is arranged. ing. As shown in FIG. 4, the membrane switch 42 includes a pair of switch sheets 52, 52 each having an electrode pattern 51 formed in a matrix at a predetermined pitch in the vertical and horizontal directions, respectively. And a spacer sheet 55 in which a region 54 corresponding to the switch portion 53 of the electrode pattern 51 is cut out in a circular or rectangular shape. When the switch sheets 52, 52 in a region pressed by a finger or the like bend, the membrane switch 42 is brought into contact with the switch unit 53 formed with the pair of switch sheets 52, 52, so that the membrane switch 42 is in the pressed position. A device that detects coordinates is used (Japanese Patent No. 2556711).

However, the membrane switch 42 is not limited to this, and is disclosed in
No. 5,668, JP-A-8-258147, JP-A-8-241647, or Japanese Patent No. 25306.
Various types disclosed in Japanese Patent Publication No. 51 and the like can be used, and the type is not limited.

As the membrane switch 42, a resistive layer having the same shape is interposed between a pair of conductive substrates formed in a rectangular shape. By providing a grid electrode for detection at the end in the direction, when a part of the conductive substrate is pressed,
Since the resistance value between the detection grid electrodes provided at the end portions in the vertical direction and the horizontal direction changes, the resistance value between the detection grid electrodes located in the vertical direction and the horizontal direction is detected, and the finger value is detected. For example, an analog type configured to detect the coordinates of the position pressed by the user may be used. Such an analog type may be used, and the present invention is not limited to this type, and any type may be used as long as the position on the display screen can be detected by sensing the pressure in response to pressing from the viewing side of the display screen.

FIG. 2 shows the input / output device 4 configured as described above.
0 shows wiring to the control board.

In FIG. 2, reference numeral 41 denotes a liquid crystal display panel. Below the liquid crystal display panel 41, membrane switches 42 are arranged in a stacked state. The wiring of the liquid crystal display panel 41 is
The STN liquid crystal driver IC 56 for applying a predetermined driving voltage to the O electrode 44 via the flexible substrate 55
P (Tape Carrier Package) 57 and ITO of the transparent resin sheet 45 of the liquid crystal display panel 41
The electrodes 44 are connected by thermocompression bonding using an anisotropic conductive adhesive sheet 58. The TCP 57 is connected to a printed circuit board 59.

FIG. 5 shows the input / output device 4 configured as described above.
It is a block diagram which shows the control circuit of 0.

In FIG. 5, reference numeral 60 denotes a CPU for controlling the input / output device 40. The membrane switches 42 formed in a matrix of the input / output device 40 are arranged in one direction in the X or Y direction. The electrode patterns 51 arranged at a predetermined pitch along the direction are scanned by the scan output output from the CPU 60 via the buffer circuit 61, and the electrode patterns 51 arranged at a predetermined pitch along the other The output signal is input to the CPU 60 via the driver circuit 62 and the CPU 60
Is configured to detect the coordinates of a position pressed by a finger or the like from the viewing side of the liquid crystal display panel 41.

Further, the CPU 60 displays a display screen based on the input information on the liquid crystal display section 43 of the liquid crystal display panel 41. That is, the CPU 60 determines, based on the configuration data of the screen to be displayed (hereinafter, referred to as frame data).
The drawing processing on the liquid crystal display unit 43 is performed via the driver circuit 63.

By the way, among the input / output devices 40 configured as described above, a manufacturing device for manufacturing the liquid crystal display panel 41 is configured as follows.

That is, the display device manufacturing apparatus according to the present embodiment connects the drive circuit for driving the display element to the electrode of the display element capable of storing the display image, thereby the display apparatus is manufactured. In a manufacturing apparatus of a display device to be manufactured, by energizing a predetermined transparent state of the display element, energizing display means for displaying and storing a predetermined pattern as an alignment mark on the display element, and energizing by the energizing display means Detecting means for detecting a position of a predetermined display pattern displayed on the display element; and a driving circuit connected to the electrode of the display element based on position information of the predetermined display pattern detected by the detecting means. It is configured to include positioning means for moving and positioning the electrodes of the display element and the drive circuit.

FIG. 6 shows a display device marking device 12 which also constitutes a part of the display device manufacturing apparatus.

This marking device is provided with an energization display means for energizing a predetermined transparent electrode of the display element to display a predetermined pattern as an alignment mark on the display element.

That is, as shown in FIG. 6, the marking device 10 includes a flat rectangular suction stage 12 on which the liquid crystal display element 11 is mounted in a sucked state. The liquid crystal display element 11 mounted on the suction stage 12
Is the liquid crystal display panel 41 shown in FIG. 2 and FIG.
This is a state before mounting the driver IC 56, the flexible substrate 55, and the like constituting at least the driving circuit, and may be a state after the polarizing plate 47, the reflecting plate 49, and the like are mounted, or a state before the mounting. good. Here, as the liquid crystal display element 11, the liquid crystal display panel 41 shown in FIGS. 2 and 3 in a state before the driver IC 56, the flexible substrate 55, and the like constituting the drive circuit are attached is used.

The suction stage 12 is provided with a plurality of vacuum openings 13 for fixing the liquid crystal display element 11 by suction. In addition, one end of the suction stage 12 has an upright wall 1 formed vertically.
4, a horizontal plate portion 15 is provided so as to face the surface of the suction stage 12 via the liquid crystal display 4. A liquid crystal placed on the suction stage 12 is provided on an upright wall 14 of the suction stage 12. Two position adjusting screws 16 for adjusting the position of the display element 11 are screwed at predetermined intervals. Further, two abutting pins 17 for positioning the suction stage 12 in a state where the lateral edges of the liquid crystal display element 11 are abutted are provided at predetermined ends of the suction stage 12 at right angles to the position adjusting screws 16. It protrudes at intervals.

Probe electrodes 18 and 19 for supplying a current to the ITO electrode 44 of the liquid crystal display element 11 mounted on the suction stage 12 are provided on the suction stage 12 and the horizontal plate 15 at a predetermined interval. Is provided. Of the probe electrodes, the probe electrode 18 provided on the suction stage 12 is fixedly attached to a mounting hole 20 formed in the suction stage 12, and the tip of the probe electrode 18 is 12
Upper PES sheet 4 of liquid crystal display element 11 placed on top
The lower electrode 5 is in contact with the ITO electrode 44 exposed downward. On the other hand, the probe electrode 19 provided on the horizontal plate portion 15 is fixedly attached to a mounting hole 21 formed in the horizontal plate portion 15, and the tip of the probe electrode 19 is placed on the suction stage 12. The upper surface of the lower PES sheet 45 of the liquid crystal display element 11 placed in contact with the ITO electrode 44 is exposed upward. These probe electrodes 18, 19 are shown in FIG.
As shown in (c), the liquid crystal display device includes a needle-shaped electrode 23 urged in a direction in which the liquid crystal display device 11 is protruded by a coil spring 22. The tip of the needle electrode 23 comes into contact with a predetermined transparent electrode 45 exposed along one edge of the needle electrode 23.

The probe electrodes 18 and 19 are connected to a positive terminal and a ground terminal of a pulse generator 24, respectively, as shown in FIG. A voltage, for example, a voltage of 5 V is applied in a pulse form for 0.1 sec.

As described above, the marking device 10 includes:
By applying a current to the transparent electrode 44 of the liquid crystal display element 11 placed on the suction stage 12, for example, as shown in FIG. 11 corners of the display area;
It is configured such that it is formed at a position spaced apart from the corner by a predetermined distance in the vertical and horizontal directions.

FIG. 8 shows a TCP (Tape Carrier Package) mounted at a predetermined position of the liquid crystal display element 11 on which the alignment marks are formed as described above.

As shown in FIG. 8, the TCP 26 has a base tape 27 formed in an elongated strip shape.
On both sides of the base tape 27, a TCP 26 continuously formed in a tape shape is automatically conveyed, and the TCP 26
A sprocket hole 28 for punching a hole is formed at regular intervals. A driving IC chip 29 for driving the liquid crystal display element 11 is disposed at the center of the base tape 31, and the driving IC chip 29 is electrically connected around the base tape 27. The wiring 30 for connection to is patterned in a predetermined shape. The driving IC chip 29 and the wiring 30
Are electrically connected to each other via bumps 31 of a driving IC chip 29, as shown in FIG. The wiring 30 formed on the base tape 27 is
While being covered with the solder resist 32,
The driving IC chip 29 is thickly covered with a resin 33. At the upper end of the wiring 30 of the TCP 26, the output outer lead 34 is connected to the transparent electrode 4 of the liquid crystal display element 11.
4 are provided at the same pitch. At the lower end of the wiring 30 of the TCP 26, an input-side outer lead 35 for connecting to a control circuit (not shown) is provided. As shown in FIG. 10, such a TCP 26 is continuously formed as a TCP tape 36 at regular intervals, and is wound around a reel 38 via a conductive separator 37. The TCP 26 configured as above is
As shown in FIG. 8, punching is performed one by one at a position indicated by a broken line indicating the user's area 39 and used.

As shown in FIG. 8, the TCP 26 has an alignment mark 70 for alignment with the transparent electrode 44 of the liquid crystal display element 11 when it is mounted on the liquid crystal display element 11. , Drive IC chip 29
Are formed at predetermined positions on both sides.

FIG. 11 shows a rotary multifunction TCP mounting machine as a manufacturing apparatus for manufacturing the liquid crystal display device configured as described above.

In FIG. 11, reference numeral 71 denotes the liquid crystal display element 11.
FIG. 3 shows an LCD stage unit for rotating and transporting the LCD stage to a predetermined work station in a state where the LC is mounted.
The D stage unit 71 includes four stages 72 arranged orthogonal to each other. Each of the stages 72 of the LCD stage section 71 includes a first station 73 for supplying and storing the liquid crystal display element 11, and supplies the TCP 26 to a predetermined position of the liquid crystal display element 11, and moves the TCP 26 to a predetermined position. A second station 74 for performing temporary crimping by positioning the plurality of TCPs 26 at a predetermined position of the liquid crystal display element 11 at a predetermined time.
And a fourth station 7 for individually and completely press-bonding the TCP 26 to a predetermined position of the liquid crystal display element 11.
6 and is configured to be able to be stopped by rotating by 90 degrees. As described above, the LCD stage section 71 is rotated by 90 degrees around the rotation axis 77 so as to stop the four tables 72 for moving the liquid crystal display element 11 to the stations 73 to 76. , And is rotationally driven by driving means (not shown).

In the first station 73, the liquid crystal display element 11 is placed at a predetermined position on the stage 72 in a state where it is attracted by vacuum means (not shown), and the liquid crystal display device after the drive circuit connection step is completed. The display element 11 is released from the stage 72 by releasing the suction state by the vacuum means, and can be accommodated. In the second station 74, the TCP
A TCP supply unit 78 for supplying the TCP 26 is provided. In the TCP supply unit 78, a TCP tray 79 that accommodates the TCP 26 face down, that is, with the output-side outer leads 34 facing downward is disposed. . The size of the TCP tray 79 is, as shown in FIG.
It is set slightly larger than the outer shape of the TCP 26 itself, so that the mounting position and the inclination angle of the TCP 26 can be restricted within a predetermined range.

In the second station 74,
As shown in FIG. 11, a TCP / LCD recognition camera 8 comprising a CCD camera or the like as a detecting means for detecting the position of a predetermined display pattern 25 displayed on the liquid crystal display element 11.
0 is arranged. This TCP / LCD recognition camera 8
0 indicates the stage 72 stopped at the second station 74
In the liquid crystal display element 11 mounted thereon, the vicinity of the edge of the liquid crystal display element 11 to which the TCP 26 is fixed is arranged so as to be photographable from below, and at least the side to which the TCP 26 of the liquid crystal display element 11 is fixed. Of the liquid crystal display element 11 in the direction along the edge of
6 can be moved in both directions perpendicular to the edge on the side to which it is fixed.

Further, the second station 74 is also provided with a TCP temporary attaching section 81. The TCP temporary attaching section 81 includes a TCP stored in a TCP tray 79.
The suction head 82 for transferring the TCP 26 to the edge of the liquid crystal display element 11 stopped at the second station 74 by sucking the liquid 26, and placed at a predetermined position on the edge of the liquid crystal display element 11. A bonding head 83 for provisional pressure bonding for temporarily pressing the TCP 26 is provided. The suction head 82 and the bonding head 83 are provided in a direction along the edge of the liquid crystal display element 11 on the side where the TCP 26 is fixed. And can be moved in a direction orthogonal to.

Further, in the third station 75, there is disposed a final bonding machine 84 for performing final full-bonding of a plurality of TCPs 26 which are temporarily bonded to predetermined positions of the liquid crystal display element 11. A plurality of TCPs 26 are permanently press-bonded together at predetermined positions of the liquid crystal display element 11 by the press-bonding machine 84.

In the fourth station 76,
A permanent bonding machine 85 for individually and permanently bonding the TCP 26 at a predetermined position of the liquid crystal display element 11 is disposed.
6 are individually and completely bonded. As shown in FIG. 13, for example, as shown in FIG. 13, the final bonding machine 85 for individually final bonding includes a bonding stage 86 for supporting an edge of the liquid crystal display element 11 to which the TCP 26 is fixed, and a bonding tool 87 for individually performing final bonding. And a pressurizing cylinder 88 for moving the joining tool 87 up and down, and an LCD cooling tool 89 for cooling the joining portion of the liquid crystal display element 11 from above and below.

The final crimping machine 84 disposed in the third station 75 has substantially the same configuration as the final crimping machine 85.

In the above configuration, the display device manufacturing apparatus according to this embodiment can easily and accurately perform the positioning operation of the display element and the drive circuit for driving the display element as follows. Is available.

That is, in this embodiment, as shown in FIG. 3, the buffer layer 48 and the polarizing plate 47 are stacked on the upper side of the liquid crystal display 43, and the polarizing plate 47 is stacked on the lower side of the liquid crystal display 43. Thereby, the liquid crystal display panel 41 itself is manufactured. Here, the reflection plate 49 is not provided below the liquid crystal display unit 43. In the liquid crystal display panel 41 manufactured in this manner, the liquid crystal display element 11 in a state where the driving circuit is not connected is, as shown in FIG. 6B, at least one side in the vertical direction (the left side of FIG. 6B). Side)
And one side in the horizontal direction (upper side in FIG. 6B)
The PES sheet 45 on one side is formed so that the ITO electrode 44 is exposed. More specifically, one side in the vertical direction of the liquid crystal display element 41 is cut off the layer of the upper PES sheet 45 and the liquid crystal 46 to expose the ITO electrode 44 formed on the lower PES sheet 45. On the other hand, on one side in the horizontal direction of the liquid crystal display element 41, the layer of the lower PES sheet 45 and the liquid crystal 46 is cut off to expose the ITO electrode 44 formed on the lower surface of the upper PES sheet 45. I have. The ITO electrode 4 of the liquid crystal display element 11
4 are arranged, for example, with a width of 0.28 mm and a pitch of 0.3 mm along the vertical direction and the horizontal direction of the liquid crystal display element 41, so as to be exposed only 6 mm from the end of the liquid crystal display element 41. Has become.

Next, as described above, the vertical and horizontal IT
The liquid crystal display element 41 with the O electrode 44 exposed is shown in FIG.
As shown in FIG. 3, the vertical and horizontal edges of the liquid crystal display element 41 are in contact with the position adjustment screw 16 and the abutment pin 17 so that the suction stage 12 of the marking device 10 can be used.
Placed on top. At this time, the liquid crystal display element 41 is visually inspected so that the ITO electrodes 44 located at the ends in the vertical and horizontal directions coincide with the probe electrodes 18 and 19 provided on the upper and lower sides of the suction stage 12. By the confirmation, the horizontal mounting position and the inclination of the liquid crystal display element 41 are adjusted by the two position adjusting screws 16. In this state, the upper electrode 44 of the lower PES sheet 45 is grounded to the ITO electrode 44 of the liquid crystal display element 41 as shown in FIG. 5V pulse voltage is applied for 0.1 second.

In this manner, in the liquid crystal display element 11, only the liquid crystal 46 of the matrix energized by the probe electrodes 18 and 19 is oriented, and as shown in FIG. Are displayed at predetermined intervals in the vertical and horizontal directions. At this time, when a pulse voltage is simultaneously applied to the lower electrode 44 of the upper PES sheet 45 by the pulse generator,
In addition to the dots shown in FIG. 17, dots are displayed at positions where the energized ITO electrodes 44 intersect. By applying a pulse voltage to the upper and lower probe electrodes 18 and 19 with a predetermined time difference, FIG. Can be displayed.

After the operation of forming the alignment mark 25 by the marking device 10 is completed,
A manufacturing process for actually manufacturing a liquid crystal display device is performed.

First, the liquid crystal display element 41 has the structure shown in FIG.
(A) As shown in FIG.
An elongated anisotropic conductive adhesive sheet (ACF) 90 is attached to the end of the O electrode 44 (step 1 in FIG. 14).

Next, the liquid crystal display element 11 shown in FIG.
As shown in (b), the TCP 26 is provisionally press-bonded (step 2 in FIG. 14).
This is performed as follows. The structure of the liquid crystal display device 41 includes a type in which the TCP 26 is connected to the liquid crystal display element 11 via the flexible substrate 55 as shown in FIGS. 2 and 21 and a type in which the liquid crystal display element 11 is connected as shown in FIG. There is a type in which the TCP 26 is directly connected to the liquid crystal display device, and the basic manufacturing method is the same for each type. Here, as shown in FIG.
A method of manufacturing the liquid crystal display device 41 of the type to which P26 is connected will be described.

First, in the temporary press bonding step of the TCP 26,
As shown in FIG. 11, the liquid crystal display element 11 is placed such that the portion to which the anisotropic conductive adhesive sheet 90 is attached faces outward.
It is supplied to a predetermined position on the stage 72 located at the first station 73 of the rotary multi-function TCP mounting machine (step 1 in FIG. 16), and is fixed by suction. At this time, in order to fix the liquid crystal display element 11 at a predetermined position on the stage 72 located at the first station 73 of the rotary type multi-function TCP mounting machine, as shown in FIG. By fixing with the pressing member 96 and laminating the heat radiating plate 97,
The liquid crystal display element 11 may be protected from heat.
The rotary multi-function TCP shown in FIG.
The manufacturing process by the mounting machine is a process for manufacturing both the liquid crystal display device of the type shown in FIG. 21 and the liquid crystal display device of the type shown in FIG. 22, but here, the liquid crystal display device of the type shown in FIG. The manufacturing process of the device will be described. In this state, the rotary multi-function TC
The P mounting machine starts operation (step 2 in FIG. 16), and is driven to rotate by 180 degrees so that the stage 72 on which the liquid crystal display element 41 is fixed by suction is located at the second station 74 (step in FIG. 16). 3-4).

Further, a rotary multi-function T
As shown in FIG. 11, the CP mounting machine sets the TCP / LCD recognition camera 80 to the TC in the second station 74.
The TCP / LCD recognition camera 80 is moved below the P supply unit 78 to recognize the outer shape of the TCP 26 stored in the TCP tray 79 (Step 5 in FIG. 16).
The TC provided in the second station 74
The TC suction head 82 of the P temporary attaching section 81
The operation of sucking the TCP 26 stored in the P tray 79 is performed in parallel (Step 6 in FIG. 16).

Next, the rotary multi-function T
In the CP mounting machine, as shown in FIG.
TCP / L illuminated by 5 and stopped in place
The CD recognition camera 80 recognizes the alignment mark 70 provided on the TCP 26 (see FIG. 1).
6, step 7), the alignment mark 25 of the liquid crystal display element 11 placed on the stage 72 is recognized (step 8 in FIG. 16). Here, a plurality of alignment marks 25 are formed on the liquid crystal display element 11 as shown in FIGS.
The recognition camera 80 first recognizes the alignment mark 25 provided at the corner.

The TCP / LCD recognition camera 80
When recognizing the positioning marks 70 provided on the CP 26 and the positioning marks 25 provided at the corners of the liquid crystal display element 11, when the positioning marks 70 and 25 are recognized by their outer shapes, For example, if these alignment marks 70 and 25 are TCP / LCD
The T is set at the center of the imaging area of the recognition camera 80.
By moving and stopping the CP / LCD recognition camera 80 and recognizing the stop position of the TCP / LCD recognition camera 80 as X and Y coordinates, the alignment mark 70 provided on the TCP 26 and the liquid crystal display element 11 is obtained. And 2
5 is detected.

Thereafter, the rotary type multi-function TCP mounting machine moves the position of the suction head 82 for conveyance which has sucked the TCP 26, and the output outer lead 34 of the TCP 26 is moved to the predetermined transparent electrode 4 of the liquid crystal display element 11.
Fine adjustment is made so as to exactly match the position 4, and the position of the TCP 26 is corrected (step 9 in FIG. 16). At this time, the suction head 82 for conveyance may be capable of adjusting not only the X and Y directions of the TCP 26 but also the tilt of the suction head 82 itself and the inclination with respect to the X and Y coordinates.

Next, the rotary type multifunction T
The CP mounting machine moves the temporary pressure bonding head 83 onto the TCP 26 of the liquid crystal display element 11 on which the TCP 26 is accurately positioned, in place of the transport suction head 82, and the temporary pressure bonding head 83 As shown in FIG. 15B, at a low temperature and pressure, T
The CP 26 is temporarily bonded on the ITO electrode 44 of the liquid crystal display element 11 (Step 9 in FIG. 16).

In the rotary multi-function TCP mounting machine, as shown in steps 5 to 10 in FIG.
The step of recognizing and adsorbing the CP 26, the step of transporting by suction, and the step of temporary bonding are repeated (step 10 in FIG. 16),
A predetermined number of TCPs 26 are temporarily joined on the ITO electrode 44 of the first embodiment.

Next, the rotary multi-function T
As shown in FIG. 11, the CP mounting machine has a predetermined number of TCPs.
The stage 72 on which the liquid crystal display element 11 to which the liquid crystal display element 26 is temporarily bonded is placed is rotated by 90 degrees counterclockwise (step 11 in FIG. 16), and the liquid crystal display element 11 is cooled (FIG. 16).
Step 12). Then, at the third station, as shown in Step 3 of FIG. 14 and FIG.
26 on the ITO electrode 44 of the liquid crystal display element 11
Then, the main bonding is performed (step 13 in FIG. 16). afterwards,
Fig. 1 shows a rotary type multi-function TCP mounting machine.
As shown in FIG. 1, the stage 72 on which the liquid crystal display element 11 on which the predetermined number of TCPs 26 are permanently bonded is placed is rotated counterclockwise by 90 degrees (step 14 in FIG. 16), and the predetermined number of TCPs 26 The joined liquid crystal display element 11 is stored (step 15 in FIG. 16).

Next, the liquid crystal display element 11 to which the predetermined number of TCPs 26 are permanently joined as described above is used in step 4 in FIG.
As shown in FIG. 14, an inspection is performed to determine whether a predetermined number of TCPs 26 have been permanently joined at predetermined positions (Step 4 in FIG. 14). If an abnormality is found, Step 5 in FIG.
A repair step is performed as shown in FIG.

On the other hand, when a predetermined number of TCPs 26 are permanently joined to predetermined positions of the liquid crystal display element 11, a printed circuit board 59 is supplied as shown in step 6 of FIG. Of the input outer lead 35 and the wiring of the printed circuit board 59 are soldered. Next, an inspection is performed to determine whether the input outer leads 35 of the TCP 26 and the printed circuit board 59 have been properly soldered (Step 7 in FIG. 14). If an abnormality is found, Step 8 in FIG. A repair step is performed as shown in FIG.

Next, when the input outer lead 35 of the TCP 26 and the printed board 59 are properly soldered, a resin coating process is performed as shown in step 9 of FIG. The joining position of the TCP 26 and the soldering position between the TCP 26 and the printed board 59 are coated with resin.

Finally, as shown in step 10 of FIG. 14, a lighting test of the liquid crystal display device 41 manufactured as described above is performed.

As described above, in the method of manufacturing the liquid crystal display element according to the above embodiment, as shown in FIG. 17, a predetermined ITO electrode 44 of the liquid crystal display element 11 is energized, and a predetermined Since the pattern 25 is displayed and the display pattern 25 is used as an alignment mark when the TCP 26 is connected to the ITO electrode 44 of the liquid crystal display element 11, a predetermined I
With a simple operation of energizing the TO electrode 44, the alignment mark 25 can be formed at a predetermined position on the liquid crystal display element 11, and the liquid crystal display element 11 can be formed using the alignment mark 25. By performing the positioning with the TCP 26, the positioning of both can be easily performed. Further, since the ITO electrode 44 of the liquid crystal display element 11 is formed with high accuracy, the alignment mark 25 can be formed with high accuracy only by supplying a current to the predetermined ITO electrode 44 of the liquid crystal display element 11. In addition, the alignment between the liquid crystal display element 11 and the TCP 26 can be accurately performed.

Further, in the above embodiment, as shown in FIG. 17, a predetermined pattern 25 displayed on the liquid crystal display element 11 is formed by forming a corner of the display area of the liquid crystal display element 11 and a vertical line from the corner. Since the liquid crystal display element 11 and the liquid crystal display element 11 are formed so as to be formed at predetermined intervals in the horizontal and horizontal directions.
Even when the relative position with respect to P26 is shifted in the vertical direction, the horizontal direction, or the oblique direction, the relative position shift between the liquid crystal display element 11 and the TCP 26 is detected by the plurality of patterns, and 11 and the TCP 26 can be more accurately aligned.

Further, in the above-described embodiment, when a predetermined ITO electrode 44 of the liquid crystal display element 11 is energized, a predetermined pattern is displayed on the liquid crystal display element 11 as the alignment mark 25. A marking device 10, which is energized by the marking device 10 and has a TCP / TCP as a detecting unit for detecting a position of a predetermined display pattern 25 displayed on the liquid crystal display element 11.
Based on the position information of the LCD recognition camera 80 and the predetermined display pattern 25 detected by the TCP / LCD recognition camera 80, the ITO electrode 44 of the liquid crystal display element 11
The TCP 26 connected to the liquid crystal display element 11 is moved, and a suction head 82 for conveyance is provided as positioning means for positioning the ITO electrode 44 of the liquid crystal display element 11 and the TCP 26. By applying a current to a predetermined ITO electrode 44 of the liquid crystal display element 11 placed on the suction stage 12 of the display element 11, a predetermined pattern 25 is displayed on the liquid crystal display element 11 as an alignment mark. The position of the display pattern 25 is detected by the TCP / LCD recognition camera 80, and based on the position information of the predetermined display pattern 25 detected by the TCP / LCD recognition camera 80, the liquid crystal display element 11 is moved by the suction head 82 for conveyance.
When connected to the ITO electrode 44, the TCP 26 moves,
By positioning the ITO electrode 44 of the liquid crystal display element 11 and the TCP 26, troublesome work is not required, and the position of the liquid crystal display element 11 and the TCP 26 can be easily and accurately adjusted.

In the above-described embodiment, the marking device is used as an energizing display means for energizing the predetermined ITO electrode 44 of the liquid crystal display element 11 to display the predetermined pattern 25 as an alignment mark on the liquid crystal display element 11. Since the probe electrodes 18 and 19 are configured to include the ten probe electrodes 18 and 19, the predetermined electrode electrodes 44 of the liquid crystal display element 11 are energized by the probe electrodes 18 and 19 so that the liquid crystal display element 11 serves as an alignment mark. The predetermined pattern 15 can be displayed, and the alignment between the liquid crystal display element 11 and the TCP 26 is performed by using the alignment mark 25, so that the operation of aligning the two can be easily performed. Further, since the ITO electrode 44 of the liquid crystal display element 11 is formed with high accuracy, a predetermined ITO electrode 44 of the liquid crystal display element 11 is formed.
, The alignment mark 25 can be formed with high accuracy, and the alignment between the liquid crystal display element 11 and the TCP 26 can be performed with high accuracy.

Second Embodiment FIG. 23 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and described. In a manufacturing process of the liquid crystal display device 41, a driving circuit is connected to the liquid crystal display element 11 before the polarizing plate 47 is mounted on the liquid crystal display element 11.

That is, in the second embodiment of the present invention,
As shown in FIG. 17, even when the alignment mark 25 is displayed on the liquid crystal display element 11, before the polarizing plate 47 is attached to the liquid crystal display element 11, the alignment mark 25 is visually observed or the camera is positioned. As shown in FIG. 23, the light source and the CCD camera 8
And a polarizing plate 47 is attached to each of them.

The other configuration and operation are the same as those of the first embodiment, and the description is omitted.

Third Embodiment FIG. 24 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals. The configuration and arrangement of the alignment marks formed on the liquid crystal display element 11 are different from those of the first embodiment.

That is, in the third embodiment of the present invention,
Alignment mark 2 formed on liquid crystal display element 11
As shown in FIG. 24 (a), a large square shape as shown in FIG. 24, an L-shape shape as shown in FIG. 24 (b), and as shown in FIG. It is configured to use a filled round shape or circular shape, or a cross-shaped or cross-shaped shape as shown in FIG.

The other structure and operation are the same as those of the first embodiment, and the description is omitted.

[0084]

According to the first aspect of the present invention, a predetermined pattern is displayed and stored on the display element by applying a current to a predetermined electrode of the display element.
Since it is configured to be used as an alignment mark when connecting a drive circuit to an electrode of the display element, a simple operation of energizing a predetermined electrode of the display element can be used to align the electrode at a predetermined position of the display element. Marks can be formed, and by using the alignment marks to align the display element and the drive circuit, the alignment of both can be easily performed. Further, since the electrodes of the display element are formed with high accuracy, the alignment mark can be formed with high accuracy only by applying a current to a predetermined electrode of the display element, and the alignment between the display element and the drive circuit is performed. Can be performed with high accuracy.

Further, according to the second aspect of the present invention, the predetermined pattern displayed on the display element is defined by a corner in the displayable area of the display element and a predetermined pattern in the vertical and horizontal directions from the corner. Since it is configured to be formed at intervals, even if the position where the display element is installed is shifted in the vertical direction, the horizontal direction, or the diagonal direction, the position shift of the display element is detected by these plural patterns. Thus, the alignment between the display element and the drive circuit can be performed with higher accuracy.

Further, according to the third aspect of the present invention,
An energization display means for energizing a predetermined electrode of the display element to display and store a predetermined pattern as an alignment mark on the display element, and a predetermined energization performed by the energization display means and displayed on the display element. Detecting means for detecting the position of the display pattern, and moving the drive circuit connected to the electrode of the display element based on the position information of the predetermined display pattern detected by the detection means. And a positioning means for performing positioning with respect to the display element, by energizing a predetermined electrode of the display element mounted on the manufacturing table of the display device by the energization display means, A predetermined pattern is displayed as an alignment mark, and the position of the predetermined display pattern is detected by a detecting means.
Based on the position information of the predetermined display pattern detected by the detection unit, the driving circuit connected to the electrode of the display element is moved by the positioning unit, and the positioning of the electrode of the display element and the driving circuit is performed. No troublesome work is required, and it is possible to easily and accurately align the display element with the drive circuit.

Further, the invention according to the fourth aspect of the present invention is provided with energization display means for energizing a predetermined electrode of the display element to display and store a predetermined pattern on the display element as an alignment mark. With such a configuration, a predetermined pattern can be displayed as a positioning mark on the display element by supplying a current to a predetermined electrode of the display element by the power supply display means. Thus, by performing the alignment between the display element and the drive circuit, it is possible to easily perform the alignment work between the two. Further, since the electrodes of the display element are formed with high accuracy, the alignment mark can be formed with high accuracy only by applying a current to a predetermined electrode of the display element, and the alignment between the display element and the drive circuit is performed. Can be performed with high accuracy.

According to a fifth aspect of the present invention, the energizing display means should energize the mounting means for mounting the display element and the display element mounted on the mounting means. The display device is mounted on the mounting device because it is configured to include a plurality of probes provided at the positions of the electrodes and positioning means for positioning the probe and the electrodes of the display device. In a state where the electrodes to be energized to the display element mounted on the mounting means are energized by a plurality of probes in the state, the positions of the probes and the electrodes of the display element are adjusted by alignment means. When a predetermined electrode of the display element is energized, a predetermined pattern can be accurately displayed as an alignment mark.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a main part of a method for manufacturing a display device according to the present invention.

FIG. 2 is a plan view showing a liquid crystal display device manufactured using the method and the apparatus for manufacturing a display device according to the present invention.

FIG. 3 is a diagram showing a liquid crystal display device manufactured using the method and the device for manufacturing a display device according to the present invention.
3 is a partial sectional view taken along line AA ′ of FIG.

FIG. 4 is an exploded perspective view showing the membrane switch.

FIG. 5 is a block diagram showing a control circuit.

6A is a sectional view showing a marking device, FIG. 6B is a plan view of the same, and FIG. 6C is a view showing a configuration of a probe electrode.

FIG. 7 is a block diagram showing an energizing circuit of the marking device.

FIG. 8 is a plan view showing TCP.

FIG. 9 is a sectional view of a principal part showing a TCP.

FIG. 10 is a perspective view showing a TCP tape.

FIG. 11 is a perspective view showing a rotary type multi-function TCP mounting machine.

FIG. 12 is an explanatory diagram showing a TCP tray.

FIG. 13 is a perspective view showing a final crimping machine of a rotary type multi-function TCP mounting machine.

FIG. 14 is a flowchart showing a manufacturing process of the liquid crystal display device.

FIGS. 15 (a) to (d) are process explanatory diagrams respectively showing a manufacturing process of the liquid crystal display device.

FIG. 16 is a flowchart showing a manufacturing process of the liquid crystal display device.

FIG. 17 is an explanatory diagram showing a state in which alignment marks are displayed on the liquid crystal display element.

FIG. 18 is an explanatory diagram showing a state where a mark for positioning is displayed on the liquid crystal display element.

FIG. 19 is an explanatory diagram showing a state of alignment between the liquid crystal display element and the TCP.

FIG. 20 is a plan view showing a state where the liquid crystal display element is mounted on a work stage.

FIG. 21 is a plan view showing a manufactured liquid crystal display device.

FIG. 22 is a plan view showing a manufactured liquid crystal display device.

FIG. 23 is an explanatory diagram showing a state of alignment between the liquid crystal display element and the TCP according to the second embodiment of the present invention.

FIGS. 24 (a) to 24 (d) are explanatory views showing alignment marks provided on a liquid crystal display element according to Embodiment 3 of the present invention.

FIG. 25 is an explanatory diagram illustrating a method for manufacturing a conventional liquid crystal display device.

FIG. 26 is an explanatory diagram illustrating a method for manufacturing a conventional liquid crystal display device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Display element, 2 ... Transparent electrode, 3 ... Drive circuit, 4 ... Mark for alignment of display element, 5 ... Mark for alignment on drive circuit side, 6 ... Drive element.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-15724 (JP, A) JP-A-3-123315 (JP, A) JP-A-8-1228811 (JP, A) JP-A-4- 254398 (JP, A) JP-A-8-6063 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02F 1/13-1/141 G09F 9/00

Claims (5)

(57) [Claims] An electric current is applied to an electrode of a display element capable of storing a display image, a predetermined pattern is displayed and stored on the display element, and the stored pattern is stored in an electrode of the display element. A method for manufacturing a display device, wherein the display device is used as an alignment mark when a drive circuit is connected. 2. The method according to claim 1, wherein the predetermined pattern displayed on the display element is formed at a corner in a displayable area of the display element and at a position vertically and horizontally spaced from the corner. The method for manufacturing a display device according to claim 1, wherein: 3. A display device manufacturing apparatus for manufacturing a display device, wherein a drive circuit for driving the display element is connected to an electrode of the display element capable of storing a display image. Energizing display means for displaying and storing a predetermined pattern as an alignment mark on the display element by energizing a predetermined electrode; and energizing by the energizing display means to display a predetermined display pattern displayed on the display element. Detecting means for detecting a position; moving a drive circuit connected to an electrode of the display element based on position information of a predetermined display pattern detected by the detection means; And a positioning device for performing the following. 4. An alignment mark for aligning the display element with a drive circuit for connecting a drive circuit for driving the display element to an electrode of the display element capable of storing a display image. In a marking device for a display element for forming, by applying a current to a predetermined transparent electrode of the display element,
A marking device for a display element, comprising: an energization display means for displaying and storing a predetermined pattern as an alignment mark on the display element. 5. A power supply display means, comprising: mounting means for mounting the display element; and a plurality of probes provided at positions of electrodes to be energized with respect to the display element mounted on the mounting means. The display device marking device according to claim 4, further comprising: positioning means for positioning the probe and an electrode of the display element.