JPH0756493B2 - Method for manufacturing conductive contact terminal - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable to various kinds of tests and measurements for electronic parts having a high density and fine pattern of a linear array and a very small pitch, which are printed and printed on a glass such as a liquid crystal display panel or a PC board. The present invention relates to a method of manufacturing a conductive contact terminal used for an electric connection portion when performing.

[0002]

2. Description of the Related Art Generally, contact probe pins, probe cards, conductive rubber, etc. are used as contact terminals for electrically connecting a test and measurement apparatus for a liquid crystal display panel or an electronic substrate having a fine pattern with an extremely small pitch. Are known.

[0003]

However, the contact terminals according to these conventional techniques have the following problems.
First of all, the contact probe pins are expensive, and the process of making holes on a board that holds a large number of contact probe pins at minute intervals requires sophisticated technology, which increases the manufacturing cost and makes it difficult to visually confirm the contact part. There is. Further, the probe card is also expensive, and requires a high technology for arranging a large number of the probe cards at a minute interval, which causes a problem of high manufacturing cost. On the other hand, conductive rubber is also expensive and has the drawback that the contact part cannot be visually confirmed. Further, if the measurement point range becomes wider, it is not possible to obtain a uniform contact pressure with the mating substrate. There is a problem that the contained silicon adheres. In addition to this, there is also a method in which a large number of grooves are dug in the insulating plate at minute intervals and wires are arranged on this, but this method also has a drawback that the manufacturing cost becomes very high. The present invention solves these problems,
The invention was invented for the purpose of manufacturing an inexpensive contact terminal which can be electrically connected to a linear array type fine pattern without fail.

[0004]

To achieve this object, a large number of electrically conductive members 3 having a spring property, such as phosphor bronze plates, are provided at a minute interval on an insulating member 2 such as a glass plate. A method for manufacturing a conductive contact terminal 1 in which a tip of 3 is projected and fixed from one end of the insulating member 2 by a predetermined dimension, the conductive member 3 is etched into a predetermined dimension and arranged, and then the insulating member 2 is formed. This is a manufacturing method of the conductive contact terminal 1 in which the conductive contact member 1 is bonded and fixed and then both ends of the conductive member 3 are cut.

[0005]

Since the etching process is performed with a margin left at both ends so that the conductive members 3 are connected, a large number of conductive members 3 can be accurately arranged at minute intervals and warpage and distortion after processing are small. . In addition, the insulating member 2 is made of the same material as the substrate to be measured, and the conductive member 3 accurately arranged by etching is adhered, so that the pattern of the substrate to be measured can be used even during a test or measurement involving temperature change such as a high temperature test. It is possible to make an accurate electrical connection without any pitch deviation from.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the completion of etching of the conductive member 3. This processing is first performed as a material of the conductive member 3 with a thickness of 0.
A phosphor bronze plate for springs with a diameter of 05 to 0.08 mm is used.
Cut to 6.5 mm and 50.91 mm wide. Next, the phosphor bronze plate for spring is left with 2 mm at each end, and etching is performed in a state where a large number of conductive parts having a width of 0.08 mm are arranged at a pitch of 0.17 mm (FIG. 2). The strip-shaped portion shown in FIG. 1 is a large number of rectangular long holes formed by etching. Then, gold plating is applied to the product after the etching process. On the other hand, FIG. 3 is a processing explanatory view of the insulating member 2. A glass plate with a thickness of 2 mm is used for the insulating member 2,
After being formed to have a length of 8 mm and a width of 80 mm, the bonding portion 2a (the surface to which the conductive member is bonded) is roughly roughened into ground glass.
Next, as shown in the adhesion explanatory view of FIG. 4, the conductive member 3 which has been subjected to the etching processing is adhered to the insulating member 2 at a predetermined position with a heat resistant adhesive. Subsequently, as shown in FIG. 5, one of the protruding conductive members 3 bonded to the insulating member 2 is attached to the insulating member 2.
Cut 3 mm from one end of the. The tip 3a of the conductive member 3 is lapped and then gold plated. Next, as shown in FIG. 6, the other one of the conductive members 3 is cut along the insulating member 2. Thereafter, as shown in FIG. 7, a holding plate (glass plate) 4 is adhered to prevent separation, and the conductive contact terminal 1 is completed. The side view is shown in FIG. As a matter of course, the size of each part of the above-described embodiment differs depending on the pattern of the target substrate under test, and can be freely manufactured to a desired size. The conductive member 3 may be made of a material having good conductivity and spring properties (for example, phosphor bronze plate, beryllium copper plate, etc.). Further, the insulating member 2 and the holding plate 4 are optimally made of the material (for example, glass, ceramics, etc.) used for the target substrate under test.

[0007]

As is apparent from the above description, the present invention is
Conduction in which a large number of spring-like conductive members having a very small width such as phosphor bronze plates are attached to an insulating member such as a glass plate at minute intervals, and the tip of the conductive member is fixed by protruding by a predetermined dimension from one end of the insulating member. A method of manufacturing a contact terminal, which comprises etching the conductive member into a predetermined size and arrangement,
This is a method of manufacturing a conductive contact terminal, which is adhesively fixed to an insulating member and then both ends of the conductive member are cut.

According to the present invention, since the etching process is carried out in a state where a large number of conductive members having a very small width are connected, it is possible to accurately arrange a large number of conductive members at a minute interval and to prevent warpage and distortion after processing. Less is. Further, according to this method, the contact terminal can be manufactured at an extremely low price of 1/10 of that of the conventional method, which is a great advantage that the measuring device and the test device are inexpensive. Furthermore, since the substrate under test and the insulating material of the contact terminal are made of the same material, the coefficient of thermal expansion becomes equal, so that there is no pitch deviation in measurement / testing or the like involving temperature changes, and reliable electrical connection is possible. Further, according to this method, a conductive contact terminal capable of handling a fine pattern with a pitch of 0.1 mm can be manufactured, and a temperature up to 140 ° C can be handled. Further, since it can be directly connected to the TAB tape, the signal connection with the outside can be realized, and the extremely short connection without noise damage can be achieved.

[Brief description of drawings]

FIG. 1 is a plan view of a step of etching a conductive member.

FIG. 2 is an enlarged plan view of a portion A of FIG.

FIG. 3 is a plan view for explaining the processing of the insulating member.

FIG. 4 is a plan view of a step of adhering a conductive member to an insulating member.

FIG. 5 is a plan view in which one of the conductive members is cut.

FIG. 6 is a plan view in which the other of the conductive members is cut.

FIG. 7 is a completed plan view in which a holding plate is bonded.

FIG. 8 is a side view of FIG. 7.

[Explanation of symbols]

 1 Conductive Contact Terminal 2 Insulation Member (Glass Plate) 2a Adhesive Part 3 Conductive Member (Spring Phosphor Bronze Plate) 3a Tip 4 Holding Plate (Glass Plate)

Claims (1)

[Claims] 1. An insulating member such as a glass plate, and a large number of conductive members having a spring property such as a phosphor bronze plate and having a very small width, at minute intervals.
In addition, the method is a method for manufacturing a conductive contact terminal in which the tip of the conductive member is protruded from one end of the insulating member by a predetermined dimension and fixed, and the conductive member is bonded to the insulating member after being etched into a predetermined dimension and arrangement. A method for manufacturing a conductive contact terminal, which comprises fixing and then cutting both ends of a conductive member.