Laser inspection machine for mother glass and mother glass inspection method

Abstract

The invention provides a laser inspection machine for mother glass and a mother glass inspection method. The inspection machine comprises a main body, a platform arranged on the main body, a light absorbing layer arranged on the upper surface of the platform, a laser transmitter which is arranged on the main body and opposite to the platform, and an image sensor which is arranged above the platform and opposite to the laser transmitter, wherein the platform is used for flatly pasting mother glass. As flat-pasting platform is used for holding the mother glass, and the light absorbing layer is arranged on the platform, false detection of the image sensor due to light reflex caused by dirty back side of the mother glass is avoided, whether the product is abnormal can be accurately judged to avoid false rework or rejection of the product, the production efficiency and the qualification rate are both improved, the manhour is reduced and the manufacturing cost is lowered; and the mother glass inspection method is simple to operate, can well prevent false rework or rejection caused by false detection of the product, improves the production efficiency and the qualification rate, reduces the manhour and lowers the manufacturing cost.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to plain glass processing of liquid crystal panels in liquid crystal displays. Background technique [0002] Nowadays, with the vigorous development of science and technology, the types of information products are introduced to meet the different needs of the public. Most of the early monitors were Cathode Ray Tube (CRT) monitors. Due to their bulky size and high power consumption, the radiation produced was harmful to the health of users who used the monitors for a long time. Therefore, the monitors on the market today will gradually replace the old CRT monitors with Liquid Crystal Displays (LCDs). [0003] Liquid crystal displays have many advantages such as thin body, power saving, and no radiation, and have been widely used. Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal panel and a backli...

AI Technical Summary

Problems solved by technology

see figure 1 , the existing plain glass laser inspection machine uses a top-pin platform 100, so when inspecting plain glass 200, it is easy to reflect the laser (Laser) due to the dirt on the back of the glass 200 (such as Roller Mark, roller mark). When the image sensor 300 (also known as charge-coupled device, Charge-coupled Device, CCD) receives the reflected light, it is mistaken for the particles on the front of the plain glass 200, resulting in a misjudgment of the plain glass 200. This phenomenon is Rework or scrapping is required, which increases working hours and costs while reducing production efficiency and yield

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