发明名称 |
Data line precharging apparatus and method for a liquid crystal display |
摘要 |
The quality of an image is improved even if the duration of data voltage is short for application. A gate line driver 34 sequentially applies the gate voltage to a number of gate lines G1-Gm by predetermined duration. Data lines are grouped into four groups each consisting of n lines (d1A-dnA: group A, d1B-dnB: group B, d1C-dnC: group C, and d1D-dnD: group D). A data line driver 40 and a multiplexer 38 sequentially perform for the data line groups A-D in the above predetermined duration application of data voltage to each data line in a predetermined data line group. A precharge controller 44 and a voltage switching circuit 46 apply to each of the data line groups A-D, through a transistor 42, a precharge voltage (+V1 or -V1) with the same polarity with that of data voltage being applied next time during the time from previous application of the data voltage to next application of it.
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申请公布号 |
US5892493(A) |
申请公布日期 |
1999.04.06 |
申请号 |
US19960683738 |
申请日期 |
1996.07.17 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ENAMI, KUNIO;TOMOOKA, TAKATOSHI |
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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