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A True 10-bit Data Driver LSI for HDTV TFT-LCDs Jin-Ho KIM Oh-Kyong KWON Byong-Deok CHOI Publication IEICE TRANSACTIONS on Electronics Vol.E89-C No.5 pp.585-590 Publication Date: 2006/05/01 Online ISSN: 1745-1353 DOI: 10.1093/ietele/e89-c.5.585 Print ISSN: 0916-8516 Type of Manuscript: Special Section PAPER (Special Section on Fundamental and Application of Advanced Semiconductor Devices) Category: Si Devices and Processes Keyword: 10-bit gray scale, HDTV, TFT-LCD, data driver, LCD TV, Full Text: PDF(1MB)>>
Summary: We present our recent results of the 10-bit data driver LSI for 42-inch diagonal TFT-LCD TV with full HD format. To develop data driver LSIs for a true 10-bit TFT-LCD TV with full HD (1920  1080) format, small chip area, low power consumption, and output uniformity between channels are key problems that must be solved. By applying a two-stage DAC which combines 8-bit resistor-string DAC and 2-bit binary weighted capacitor DAC, the area increase is limited to only 30% compared to the area of 8-bit resistor-string DAC. The output deviation between channels is successfully limited within  5 mV and the driver LSI with 414 outputs consumes the maximum total current of 16 mA when driving 42-inch HDTV panel. We confirmed that the picture with 10-bit shades of gray is much more natural than that with 8-bit shades of gray. | |||||
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