Clamping device of probe unit used for display panel detection

Abstract

The invention relates to a clamping device of a probe unit used for display panel detection. The probe unit is precisely and firmly fixed on a pedestal for display panel detection, so that a probe clamp assembled to the probe unit forms precise flatness. The clamping device of the probe unit used for display panel detection includes: the bottom surface of the probe unit is provided with more thanone fixed pin and the fixed pins are formed by protruding from the pedestal, the upper portion of the pedestal is provided with ball clamps that correspond to the fixed pins and fix the fixed pins oneby one, and more than one of the ball clamps can be configured by moving in the length direction of the probe unit through a transfer device arranged on the upper portion of the pedestal. The probe unit assembled with the probe clamp can be fixed to the pedestal for display panel detection and can also be clamped by the pedestal successfully when contracting, and detection credibility will not bereduced.

Description

technical field [0001] The present invention relates to a probe for detecting whether a display panel is defective or not. Specifically, in order to form a precise flatness of a probe card assembled on a probe for display panel inspection, the probe unit supporting the probe card is precisely and firmly fixed on the Clamping device for the probe unit for display panel inspection on the base for display panel inspection. Background technique [0002] The display panels used for TVs, notebook computers or mobile phones are generally provided with a plurality of electrode sheets at fine pitches, which are used to apply various electrical signals such as image signals, synchronous signals, and color signals to the edges. [0003] After the display panel is manufactured, probes are used to apply electrical signals to the electrode sheets, so as to detect whether pixels are defective. [0004] The composition of the conventional probe for display panel inspection includes: a prob...

AI Technical Summary

Problems solved by technology

[0010] However, the conventional probe unit clamping device for display panel detection adopts a method in which a plurality of cams 10, 20 move to one side and form a clamping mode at the same time. During the clamping process, the probe unit 2 is laterally clamped. Continuous application of external force in the tight direction causes poor alignment of the probe unit 2

In addition, the longer the length of the probe unit 2, the more clamping devices are installed, and the degree of poor alignment of the probe unit 2 will also increase.

[0011] As mentioned above, the traditional probe unit clamping device for display panel inspection is that the replacement of the probe unit 2 is easy and convenient to a certain extent, but in the clamping process, the arrangement state of the probe unit 2 will change. Poor, which leads to a serious problem that the accuracy of the flatness of the probe card decreases

[0012] On the other hand, when testing with a conventional probe unit clamping device for inspection of display panels, the probe unit 2 may shrink slightly in the longitudinal direction due to the internal environment of the testing chamber.

[0013] That is to say, for OLED display panels, in terms of the characteristics of the screen, in order to avoid oxidation of the screen during the detection process, the detection is carried out in an inert gas environment, but the temperature of the inert gas is lower than normal temperature, so the probe unit 2 is moved to the detection room There will be slight shrinkage during the internal process

[0014] The shrinkage of the probe unit 2 mainly occurs along the length direction of the probe unit 2. As a result, the cam roller 12 cannot be smoothly inserted into the clamping groove 30, and further cannot be clamped normally. Multiple probes formed at fine pitches cannot normally contact each electrode sheet, which greatly reduces the reliability of detection

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