发明授权
US07872499B2 Level shift circuit, and driver and display system using the same
有权
电平移位电路,驱动和显示系统使用相同
- 专利标题: Level shift circuit, and driver and display system using the same
- 专利标题(中): 电平移位电路,驱动和显示系统使用相同
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申请号: US12320778申请日: 2009-02-04
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公开(公告)号: US07872499B2公开(公告)日: 2011-01-18
- 发明人: Hiroshi Tsuchi
- 申请人: Hiroshi Tsuchi
- 申请人地址: JP Kawasaki-shi, Kanagawa
- 专利权人: Renesas Electronics Corporation
- 当前专利权人: Renesas Electronics Corporation
- 当前专利权人地址: JP Kawasaki-shi, Kanagawa
- 代理机构: McGinn IP Law Group, PLLC
- 优先权: JP2008-026548 20080206
- 主分类号: H03K19/0175
- IPC分类号: H03K19/0175 ; H03L5/00
摘要:
Disclosed is a level shift circuit that includes a first level shifter which is connected between an output terminal and a first power supply terminal that supplies a first voltage and sets the output terminal to a level of the first voltage when an input signal received at an input terminal assumes a first value; a second level shifter which is connected between the output terminal and a second power supply terminal that supplies a second voltage and sets the output terminal to a level of the second voltage when the input signal assumes a complementary value of the first value; and a feedback control unit that performs control of deactivating the first level shifter during a predetermined time interval including a point of time when the input signal is supplied when it is detected that the output terminal immediately before the input signal is received at the input terminal assumes the first voltage level. When the input signal supplied in the predetermined time interval assumes a value that sets the output terminal to the second voltage level, the second level shifter sets the output terminal to the second voltage level with the first level shifter deactivated.
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