Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-08-16
2005-08-16
Osorio, Ricardo (Department: 2673)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S098000, C345S093000
Reexamination Certificate
active
06930665
ABSTRACT:
A display device uses the load capacitances of two signal lines to perform DA conversion. Serial digital/analog conversion circuits (SDAC) in a data driver are provided for every two adjacent signal lines and use the load capacitances of these two signal lines to successively convert to analog data those data from the parallel/serial conversion circuits (PSC), PSC that correspond to the pixels of odd-numbered pixel columns and apply the converted analog data to the pixels of odd-numbered pixel columns, and successively apply data from PSC that correspond to the pixels of even-numbered pixel columns to the pixels of even-numbered pixel columns. Because the source of error of the SDAC is determined only by the difference between the two load capacitances, a polysilicon liquid crystal display device may be and the characteristics of the TFT may consequently show fluctuation, but will not act as an error source.
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Y. Matsueda et al., “Low-Temperature Poly-Si TFT-LCD with Integrated 6-bit Digital Data Drivers”, SID 96 Digest, pp. 21-24.
NEC Corporation
Osorio Ricardo
Young & Thompson
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