Defect detection device and polaroid attaching equipment

Abstract

The invention provides a defect detection device and a polaroid attaching equipment. The defect detection device comprises a laser emitter and an image acquisition device, wherein the laser emitter is used for illuminating laser to the surface of a panel to be detected; the image acquisition device is used for obtaining height information of different positions in a region subjected to laser illumination according to laser reflected by the region subjected to laser illumination in the surface, and converting the height information into corresponding gray information to obtain a gray image of the region subjected to laser illumination. According to the defect detection device provided by the invention, the laser is emitted to the surface of the panel through the laser emitter at first, then the gray image of the region subjected to laser illumination is obtained according to the laser reflected by the surface of the panel to be detected through the image acquisition device, and the heights of different positions in the obtained gray image are displayed through different gray scales, so that the defect information in the illuminated region can be institutively reflected and the surface defect detection reliability of the panel is improved.

Description

technical field [0001] The invention relates to the display field, in particular to a defect detection device and a polarizer attaching device. Background technique [0002] Thin Film Transistor-Liquid Crystal Display (TFT-LCD for short) is the current mainstream flat-panel display, and its basic structure includes color filter substrate, liquid crystal layer, array substrate, polarizer and other structures. [0003] In the manufacturing process of liquid crystal displays, after the Single Panel is slimed, it is easy to cause concave and convex defects on the surface of the panel due to polishing. Therefore, it is necessary to inspect the surface of the panel before attaching the polarizer (Pol). At present, usually It is judged by human eyes whether there are defect points on the panel. However, for the small concave and convex points on the panel, it is not easy to be recognized by human eyes, and it is easy to cause missed detection, resulting in the problem of low reliab...

AI Technical Summary

Problems solved by technology

[0003] In the manufacturing process of liquid crystal displays, when the Single Panel is slimed, it is easy to cause concave and convex defects on the surface of the panel due to polishing. Therefore, it is necessary to inspect the surface of the panel before attaching the polarizer (Pol). At present, usually It is judged by human eyes whether there are defect points on the panel. However, for the small concave and convex points on the panel, it is not easy to be recognized by human eyes, and it is easy to cause missed detection, resulting in the problem of low reliability of panel surface defect detection.

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