JPH0754384B2 - Conductive plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a state in which a plurality of linear conductive path portions such as transparent electrodes of an LCD (liquid crystal display device) or a PDP (plasma display device) are arranged in parallel. The present invention relates to a conductive plate used as an equipped one.

[Conventional technology]

Conventionally, a conductive plate used as an electrode of this kind is provided with a plurality of linear conductive path portions to be electrodes arranged side by side so that a dot matrix pattern can be formed. As shown in FIG. 1, the conductive plate 1 has a conductive pattern 3 formed on the surface thereof by arranging a plurality of conductive path portions 2 in parallel at regular intervals. As shown in the figure, in the case of having a center gap, a plurality of conductive path portions are symmetrically arranged, and the outer end portion 20 of the conductive path portion 2 serves as a terminal.

By the way, after manufacturing this conductive plate by various methods, it is checked whether or not the conductive pattern is surely formed, that is, whether the conductive path portions are not broken, or the adjacent conductive path portions are short-circuited with each other. We inspect for defective products to check for defects. The disconnection inspection and the short-circuit inspection of the conductive plate are performed by inspection equipment as follows. First, in the disconnection inspection, the inspection pins of the inspection device are applied to the respective positions a, b, ..., 1 set on the end side of each of the conductive path portions 2, and for example, the position on one end side of each of the conductive path portions. Apply the current to the test pin that touches a, b, c, g, h, i, and check the current value with the pin that touches the position d, e, f, j, k, l on the other end. Be seen. Further, the short-circuit inspection is first performed on the conductive path portion located outside in the juxtaposed direction, a current is applied to the test pin in contact with the position a, and the test pin in contact with the adjacent conductive path portion, for example, the position. The current value is detected by the inspection pins b and g to detect whether or not there is a short circuit between the conductive path portion at the position a and the conductive path portion adjacent to the conductive path portion. Then, the places where the current is applied are sequentially changed to the positions b, c, g, ...

[Problems to be Solved by the Invention]

However, since the short-circuit inspection is sequentially performed on each of the plurality of conductive path portions as described above, the inspection time becomes extremely long particularly in the case of a pattern having many conductive path portions. There was a problem that work efficiency was low.

Therefore, it has been a subject to shorten the time of the disconnection inspection and the short inspection to improve the work efficiency in the inspection process.

[Means for Solving the Problems]

The present invention has been made in consideration of the above-mentioned problems, and a plurality of conductive path portions that are symmetrically arranged through a center gap and are arranged in parallel at a constant interval, and a conductive material on both sides of the center gap. A conductive pattern having an inspection conductive path portion connected to every other side at the side end portion of the path portion, wherein the conductive path portions connected to the inspection conductive path portion are arranged alternately. A conductive plate characterized by the above is provided to solve the above problems.

[Work]

In the present invention, every other conductive path portion is continuous with the inspection conductive path portion, and the conductive path portion must not be short-circuited with the conductive path portion where a current is input from the inspection conductive path portion in the short inspection. The conductive path portion (the conductive path portion that is not continuous with the inspection conductive path portion) is arranged.

In the disconnection inspection, the inspection pin is applied to both ends of the conductive path portion which is not continuous with the inspection conductive path portion, and at least one point in the inspection conductive path portion and the conductive path portion continuous with the inspection conductive path portion. When the inspection pin is applied to each of the other end portions of, the current value between both ends of each conductive path portion which is not continuous with the inspection conductive path portion is detected, and the inspection conductive path portion is continuous with this. The current value between the other ends of the conductive paths is detected. On the other hand, at the time of short-circuit inspection, if the inspection pin is applied to the inspection conductive path portion and the conductive path portion that should not be indirectly connected to this inspection conductive path portion, at least one place between the conductive path portions is short-circuited. If it is, it will be detected as a short circuit.

〔Example〕

Next, the present invention will be described in detail based on an embodiment shown in FIG. The parts having the same configurations as those of the conventional example shown in FIG.

The conductive plate 1 has a conductive pattern 3 having a center gap. The conductive pattern 3 has a plurality of conductive path portions 2a and 2b arranged in two rows at regular intervals and extends along the periphery of the conductive plate 1. Thus, the inspection conductive path portion 4 is provided, the outer end portion 20 side of every other conductive path portion 2a is connected to the inspection conductive path portion 4, and one of the conductive path portions facing each other through the center gap is It has a structure continuous with the inspection conductive path portion 4.

When inspecting the conductive pattern 3 of the conductive plate 1, the position a of the end portion 41 of the inspection conductive path portion 4 and the positions e and g of the other end portion 21 of the conductive path portion 2a continuous with the inspection conductive path portion 4 are examined. , i, l, n,
p, the conductive path portion 2b which should not be connected to the conductive path portion 2a
Inspection pins are applied to the positions b, c, d, f, h, j, k, m, o, q, r, s of both ends of the wire, and a disconnection inspection and a short inspection are performed.

For the disconnection inspection, for example, current is applied to the inspection pins at the positions a, b, c, d, k, m, o, and the positions e, f, g, h, i, j, l, n, p, q, r, The current value should be detected by the inspection pin of s.

In addition, the short-circuit inspection is conducted when the current input from the inspection conductive path portion 4 side does not flow to the conductive path portion 2b.
Indicates that they are not in contact with each other, and conversely, when they flow to the conductive path portion 2b, it is possible that the conductive path portion 2a and the conductive path portion 2b are not connected at any place.
Indicates that they are in contact with each other, and an electric current is applied to the position a of the inspection conductive path portion 4, for example, the positions f, h, j, k, of the conductive path portion 2b.
It suffices to check whether or not it is detected by m and o, and the judgment can be made easily.

The conductive plate may be formed by cutting the outer end portion of the conductive path portion along the line AA when the panel is assembled.

〔The invention's effect〕

As described above, according to the present invention, the conductive plate is arranged symmetrically across the center gap and has a plurality of conductive path portions arranged in parallel at a constant interval, and the conductive plates on both sides of the center gap. And a conductive pattern including an inspection conductive path portion connected to every other side of the path portion, and the conductive path portions connected to the inspection conductive path portion are arranged alternately. Therefore, it is possible to reduce the number of inspection pins to be set up at the time of disconnection inspection and short circuit inspection to 3/4 of the conventional one, and in the short circuit inspection, the current input from the inspection conductive path side is applied to this inspection conductive path part. By checking whether or not the current is output in the non-continuous conductive path part, short-circuit inspection can be performed at one time, and the inspection process can be shortened. is there.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a conductive plate according to the present invention,
FIG. 2 is an explanatory view showing a conventional example. 1 ... Conductive plate 2a, 2b ... Conductive path part 3 ... Conductive pattern 4 ... Inspection conductive path part

Claims (1)

[Claims] 1. A plurality of conductive path portions which are symmetrically arranged via a center gap and are arranged in parallel at regular intervals,
It has a conductive pattern consisting of an inspection conductive path portion connected to every other side end portion of the conductive path portion on both sides of the center gap, and the conductive path portions connected to the inspection conductive path portion are staggered. A conductive plate that is provided.