发明名称 |
Data line drivers with common reference ramp for a display device |
摘要 |
<p>A video display driver applies a video signal to column electrodes of a liquid crystal display. The display driver includes a reference ramp generator and column data line drivers. Each data line driver includes a switching arrangement coupled to a first capacitance for storing a portion of the video signal in the first capacitance. A first terminal of the first capacitance is coupled to the reference ramp generator for combining a reference ramp signal with the stored video signal and for applying the combined signal to an input of a comparator. The comparator controls a transistor that couples a data ramp signal to a given column of the pixels. The reference ramp generator is coupled to the input of the comparator in a non-switched manner such that no switching transistor is interposed in a signal path between the reference ramp generator and the input of the comparator. <IMAGE></p> |
申请公布号 |
EP0731440(A1) |
申请公布日期 |
1996.09.11 |
申请号 |
EP19960400399 |
申请日期 |
1996.02.26 |
申请人 |
THOMSON MULTIMEDIA |
发明人 |
HUQ, RUQUIYA ISMAT ARA;PLUS, DORA |
分类号 |
G02F1/133;G09G3/20;G09G3/36;(IPC1-7):G09G3/36 |
主分类号 |
G02F1/133 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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