14 November 1996 Automated visual inspection of LCD modules
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Abstract
We report on the development of an automated visual inspection system for liquid crystal display (LCD) modules. The system comprises a highly graphical software program, a unique image processing algorithm, a PC interface card for driving different types of LCD modules, and a universal test jig for holding these modules. The system is able to detect faulty or malfunctioning LCD modules with minimum intervention from human operator; allows testing to be carried out for evaluating the display quality such as contrast ratio; is able to create new test databases for new LCD modules; allows permanent storage/backup of test databases for each individual LCD module; and provides a friendly user interface for ease of operation. In addition, the system has the following features: different access levels for different users; an editor for creating software drivers for driving different types of LCD modules; and a graphical help facility.
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Tuan-Kay Lim, Tuan-Kay Lim, Chan Hin Kam, Chan Hin Kam, E. J. Yap, E. J. Yap, H. Y. Yap, H. Y. Yap, } "Automated visual inspection of LCD modules", Proc. SPIE 2847, Applications of Digital Image Processing XIX, (14 November 1996); doi: 10.1117/12.258241; https://doi.org/10.1117/12.258241
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