Detection device for printed circuit board (PCB) used for three-surface-electrode liquid crystal module

Abstract

The invention relates to a detection device for a printed circuit board (PCB) used for a three-surface-electrode liquid crystal module. The detection device comprises a test switching plate (1), a pressure plate clamping mechanism and the three-surface-electrode liquid crystal module (5), wherein in the pressure plate clamping mechanism, an upper pressure plate (2) and a lower pressure plate (3) form a rotatable pin joint structure through a bearing block (4); the three-side electrode liquid crystal module (5) is provided with three surface electrodes which are not in the same plane and are fixed on the test switching plate (1) through a display module connecting structure; one end of the test switching plate (1) is fixed in the lower pressure plate (3), and the other end of the test switching plate (1) extends out of the lower pressure plate (3); the display module connecting structure comprises a conductive adhesive tape (6) and a flexible circuit board (7) matched with the three surface electrodes of the three-surface-electrode liquid crystal module (5); two electrodes in the three surface electrodes are connected with the test switching plate (1) through the conductive adhesive tape (6); and the third electrode is connected with the test switching plate (1) through the flexible circuit board (7). The detection device can be adaptable to the three-surface-electrode liquid crystal module, and can achieve a stable and effective PCB test effect.

Description

technical field [0001] The invention relates to circuit testing technology, in particular to a testing device for a printed circuit board (PCB for short) used in a liquid crystal module with electrodes on three sides. Background technique [0002] In the processing of liquid crystal products, the PCB test of the liquid crystal module is very important to the actual display effect that the liquid crystal module can achieve, and a special testing process is required to complete the test. [0003] Existing liquid crystal module products have two zebra strips on one side, which are connected to the test PCB board through the two zebra strips during the connection, and the display screen of the liquid crystal module is used to simulate the actual display effect during the test. [0004] With the emergence of the new structure of the three-sided electrode liquid crystal module, since the three-sided electrodes A, B, and C of the liquid crystal module are distributed on different p...

AI Technical Summary

Problems solved by technology

[0004] With the emergence of the new structure of the three-sided electrode liquid crystal module, since the three-sided electrodes A, B, and C of the liquid crystal module are distributed on different planes, it is impossible to simply connect the three-sided electrode liquid crystal module to the test adapter board through conductive adhesive strips. Therefore, the current PCB testing device can no longer meet the application of this new type of three-sided electrode liquid crystal module, resulting in a decrease in the efficiency of incoming inspection and a decrease in yield

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