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Development of SDI Signal generator for Large size TFT-LCD  

Choi, Dae-Seub (서일대학교 전기과)
Sin, Ho-Chul (삼일이엔씨)
Publication Information
Journal of Satellite, Information and Communications / v.9, no.1, 2014 , pp. 13-16 More about this Journal
Abstract
In applying LCD to TV application, one of the most significant factors to be improved is image sticking on the moving picture. LCD is different from CRT in the sense that it's continuous passive device, which holds images in entire frame period, while impulse type device generate image in very short time. To reduce image sticking problem related to hold type display mode, we made an experiment to drive TN-LCD like CRT. We made articulate images by fast refreshing images, and we realized the ratio of refresh time by counting between on time and off time for video signal input during 1 frame (16.7ms). Conventional driving signal cannot follow fast on-off speed, so we evaluated new signal generator using SDI (Serial Data Interface) mode signal generator. We realized articulate image generation similar to CRT by high fast full HD (High Definition) signals and TN-LCD overdriving. As a result, reduced image sticking phenomenon was validated by naked eye and response time measurement.
Keywords
Serial Data Interface; Full HD; SDI Generator;
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