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Lighting device for automatic optical detection on flat display screen

An automatic optical detection and display technology, applied in the direction of optical testing flaws/defects, etc., can solve the problems of poor light source brightness, difficult to distinguish electrical testing defects and dust, small adjustable range, etc., to achieve the effect of brightening dust

Inactive Publication Date: 2014-07-23
BEIJING C&W ELECTRONICS GRP
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a lighting device applied to the automatic optical detection of flat-panel display screens, so as to overcome the limited detection level caused by the poor brightness of the light source and the small adjustable range of the lighting device in the prior art, and it is difficult to distinguish Electrical test defects and dust problems

Method used

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  • Lighting device for automatic optical detection on flat display screen

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] like figure 1 As shown, the lighting device applied to the automatic optical inspection of flat panel display provided by the embodiment of the present invention includes: a backlight 1 , a side light 2 , a side light 3 and a carrying mechanism 4 .

[0020] The lighting device applied to the automatic optical inspection of flat-panel display screens provided by the embodiments of the present invention can not only meet the requirements of brightness change and uniformity of the display screen image after the display screen to be tested is lit, but also meet the purpose of brightening dust. Effectively filter out dust through the detection algorithm, and identify de...

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Abstract

The invention relates to the field of detection device for flat display screen, and especially relates to a lighting device for the automatic optical detection on flat display screen. The lighting device comprises a back light source, which is arranged on the bottom of a display screen to be detected; side light sources, which are arranged on two sides of the display screen to be detected; and a bearing mechanism, which is used to support the back light source and the side light sources. The lighting device can satisfy the requirements on image brightness variation and uniformity of display screen after the display screen is lighted up, and at the same time can lighten the dusts. The dusts can be effectively removed through a detection algorithm so as to recognize the electrical test performance defects of a display screen.

Description

technical field [0001] The invention is applied to the field of flat panel display detection devices, and in particular relates to a lighting device applied to automatic optical detection of flat panel displays. Background technique [0002] Flat-panel display automatic optical inspection equipment is aimed at TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Field Effect Transistor-Liquid Crystal Display), AM-OLED (Active Matrix / Organic Light Emitting Diode, Active Matrix Organic Light Emitting Diode) for the flat panel display industry Diode panel) screen quality testing equipment. This kind of equipment can detect the electrical performance of the display screen and its inherent defects, such as black spots, white spots, dark lines, bright lines, and mura (mura). [0003] In the prior art, a backlight source is usually used to illuminate the lit screen, and human eyes identify product defects. In the actual inspection process, due to the poor brightness of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95
Inventor 徐江伟董新桥
Owner BEIJING C&W ELECTRONICS GRP
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