发明授权
- 专利标题: High density column drivers for an active matrix display
- 专利标题(中): 用于有源矩阵显示的高密度列驱动器
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申请号: US937262申请日: 1997-09-15
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公开(公告)号: US6100868A公开(公告)日: 2000-08-08
- 发明人: Deog-Kyoon Jeong , David D. Lee
- 申请人: Deog-Kyoon Jeong , David D. Lee
- 申请人地址: CA Sunnyvale
- 专利权人: Silicon Image, Inc.
- 当前专利权人: Silicon Image, Inc.
- 当前专利权人地址: CA Sunnyvale
- 主分类号: G02F1/133
- IPC分类号: G02F1/133 ; G09G3/20 ; G09G3/36
摘要:
To reduce the layout area required by LCD column drivers without suffering a significant decrease in performance, a PMOS-based circuit selects a voltage from an upper set of analog display voltages and a NMOS-based circuit selects a voltage from a lower set of analog display voltages. This reduces the layout area by up to roughly a factor of two compared with conventional column drivers which are CMOS-based. Moreover, in a typical dot inversion scheme, where two adjacent columns select voltages from alternating voltage sets, two adjacent columns can share the same PMOS-based and NMOS-based circuits by using multiplexers controlled by a polarity signal to route the digital display data into the sets of switches. This reduces the layout area by up to roughly an additional factor of two.
公开/授权文献
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