Detection method for identifying surface defects of super-thin transparent plate based on mirror reflection

Abstract

The invention discloses a detection method for identifying surface defects of a super-thin transparent plate based on mirror reflection. The detection method comprises the following specific steps: irradiating one side of a to-be-detected super-thin transparent plate by virtue of a light source, wherein transmission light passing through the to-be-detected super-thin transparent plate and mirror reflection light are respectively received by a first photosensitive device and a second photosensitive device; determining that defects are located on the surface, close to the light source, of the super-thin transparent plate if dark spots simultaneously appear on the two photosensitive devices; determining that defects are located on the surface, far from the light source, of the super-thin transparent plate if a dark spot appears on the first photosensitive device and does not appear on the second photosensitive device; and determining that the super-thin transparent plate does not have defect when the dark spot is not observed on the first photosensitive device and the second photosensitive device. The detection method is simple and efficient, a detection result is accurate, and the micro-scale detection of tiny defects on the upper and lower surfaces of a super-thin plate can be rapidly realized.

Description

technical field [0001] The invention relates to the application field of automatic detection and identification, in particular to a method for real-time identification of defects such as tiny dust and scratches on an ultra-thin transparent plate based on mirror reflection, and can distinguish whether the defects are located on the upper surface or the lower surface of the plate . Background technique [0002] Optical displays permeate every aspect of people's life and production. With the development of science and technology, display devices are becoming thinner and lighter, and some companies have produced new ultra-thin flexible display screens, the thickness of which can reach the order of microns. While the revolutionary rapid development of display devices, some new problems that are difficult to solve have also arisen. [0003] During the production process of display devices such as screens, if there are cracks or fine dust on the surface, these defects will have a...

AI Technical Summary

Problems solved by technology

[0003] During the production process of display devices such as screens, if there are cracks or fine dust on the surface, these defects will have a great impact on the performance of the products produced, which may cause the device to heat up, fail to display normally, or even explo

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