A display surface defect detection system

Abstract

This application discloses a display screen surface defect detection system, comprising: a liquid crystal panel, arranged vertically, capable of displaying alternate light and dark stripes; a backlight source, arranged on the back side of the liquid crystal panel, for displaying The stripes provide backlight; the semi-transmissive half-mirror; the first imaging component is arranged on the front side of the liquid crystal panel and is located above the semi-transmissive half-mirror; the light and dark stripes emitted by the liquid crystal panel pass through the Reflected by the semi-transmissive half-mirror, shoot to the surface of the detected display screen, and then reflect on the surface of the display screen, pass through the semi-transmissive half-mirror, and enter the first imaging component; the display The screen is located on the front side of the liquid crystal panel, and is located below the obliquely arranged half-transmissive half-mirror. The detection system design avoids the disadvantages of manual detection, and can greatly improve the efficiency and accuracy of detection.

Description

technical field [0001] The present application relates to the technical field of display screen surface defect detection, and in particular, to a display screen surface defect detection system. Background technique [0002] With the rapid development of the display industry, the quality level of the products produced continues to increase, and the requirements for product surface inspection are relatively strict. For mobile phones, the standard for defect detection on the display surface is zero missed detection. At present, the detection technology of display surface defects is difficult to image defects such as bumps, ripples, and stress marks. Conventional visual imaging solutions have relatively low imaging contrast for such defects. Low, the defect characteristics are not obvious, and it is easy to cause over-inspection, and the human eye inspection is affected by the experience, fatigue and other factors of the inspector, resulting in a high missed inspection rate. Th...

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Problems solved by technology

[0002] With the rapid development of the display industry, the quality level of production products is constantly increasing, and the requirements for product surface inspection are relatively strict. The defects on the product surface are enough to affect the quality of the product and the impression of users, especially the contemporary popular full screen. For mobile phones, the standard for defect detection on the surface of the display screen is zero missed detection. At present, it is difficult for the detection technology of display screen surface defects to image defects such as bumps, ripples, and stress marks. Conventional visual imaging solutions have relatively low imaging contrast for such defects. Low, the defect characteristics are not obvious, and it is easy to produce over-inspection phenomenon, while the human eye detection is subject to the experience of the inspectors, fatigue and other factors, resulting in a high rate of missed detection; in order to quickly solve this kind of problem, based on LCD stripe light to detect the smooth surface of the display screen The imaging system is an optical imaging design idea that displays black and white stripes on the LCD panel and projects them on the product, so that the above problems can be solved

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