发明授权
- 专利标题: Display panel driving voltage output circuit
- 专利标题(中): 显示面板驱动电压输出电路
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申请号: US12618806申请日: 2009-11-16
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公开(公告)号: US08294653B2公开(公告)日: 2012-10-23
- 发明人: Akira Nakayama
- 申请人: Akira Nakayama
- 申请人地址: JP Tokyo
- 专利权人: Oki Semiconductor Co., Ltd.
- 当前专利权人: Oki Semiconductor Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Volentine & Whitt, PLLC
- 优先权: JP2008-297935 20081121
- 主分类号: G09G5/00
- IPC分类号: G09G5/00
摘要:
A driving voltage output circuit for a matrix display panel includes high-side voltage followers and low-side voltage followers. Each voltage follower includes a differential input stage, a control stage, and an output stage. The differential input stage receives non-inverting and inverting inputs and produces first and second potentials. The control stage generates third and fourth potentials from the first and second potentials. The output stage includes three transistors connected respectively to the high-side power supply, the low-side power supply, and an intermediate reference potential, and connected in common to an output terminal. Two of the three transistors are of identical channel type and are controlled by the first and fourth potentials. The third transistor is of the opposite conductive type and is controlled by the third potential.
公开/授权文献
- US20100128018A1 DISPLAY PANEL DRIVING VOLTAGE OUTPUT CIRCUIT 公开/授权日:2010-05-27