Full-automatic screen optical detection equipment and method

Abstract

The invention provides full-automatic screen optical detection equipment. The full-automatic screen optical detection equipment comprises a projection light source system, one camera, a rear projection screen and an image signal generation and processing system. A detection method comprises the following steps: amplifying a pixel of a detected screen by adopting a projection method; and detecting an image on the rear projection screen by utilizing the camera and switching content of the rear projection screen and processing the image photographed by the camera through the image signal generation and processing system, so as to determine defects and defect positions and degrees. According to the full-automatic screen optical detection equipment, various view window ranges can be detected by only one camera and the high requirements of real-time generation are met, so that the cost is reduced. The current chroma and brightness uniformity of the pixel or a sub-pixel are accurately determined, so that a screen driving part is guided to carry out specific compensation and improve the yield of the screen. The detection efficiency and the detection precision are improved.

Description

technical field [0001] The invention relates to a screen detection method and equipment in the field of video defect detection, in particular to a fully automatic screen optical detection equipment and detection method. Background technique [0002] At present, in the field of automatic defect detection of flat-panel displays, the display area is generally captured by a high-resolution camera. For self-luminous screens, no light box equipment is required, and for backlit LCD screens, a high-brightness and chromaticity stability is also required. Light box with excellent performance and high brightness uniformity. The device generates red, green, blue, white, and black images through the driving plane, and captures the screen through the camera. Due to the use of high-resolution cameras, pixels and sub-pixels can be observed, so that pixel point and line defects can be quickly determined through the pattern detection method of image processing. If the camera imaging array d...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects existing in the existing screen detection method and equipment structure, and provide a fully automatic screen optical detection equipment and detection method. The technical problem to be solved is to complete any size screen including Defect detection of self-illuminating screens and backlight LCD screens, as well as defect detection of uneven brightness of lumps and uneven brightness and chromaticity of pixels, so it is more suitable for practical use

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