Invention Grant
US08305326B2 Gate driving circuit having improved tolerance to gate voltage ripple and display device having the same
有权
栅极驱动电路具有改善的对栅极电压纹波的容限和具有其的显示器件
- Patent Title: Gate driving circuit having improved tolerance to gate voltage ripple and display device having the same
- Patent Title (中): 栅极驱动电路具有改善的对栅极电压纹波的容限和具有其的显示器件
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Application No.: US12218814Application Date: 2008-07-18
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Publication No.: US08305326B2Publication Date: 2012-11-06
- Inventor: Sung-Man Kim , Hong-Woo Lee , Myung-Koo Hur , Hee-Joon Kim
- Applicant: Sung-Man Kim , Hong-Woo Lee , Myung-Koo Hur , Hee-Joon Kim
- Applicant Address: KR
- Assignee: Samsung Display Co., Ltd.
- Current Assignee: Samsung Display Co., Ltd.
- Current Assignee Address: KR
- Agency: Innovation Counsel LLP
- Priority: KR10-2007-0078578 20070806
- Main IPC: G09G3/36
- IPC: G09G3/36

Abstract:
A gate driving circuit and a display device having the same, a pull-up unit pulls up a current gate signal by using a first clock signal during a first period of one frame. A pull-up driver coupled to the pull-up unit receives a carry signal from one of the previous stages to turn on the pull-up unit. A pull-up unit receives a gate signal from one of the next stages, discharges the current gate signal to an off voltage level, and turns off the pull-up unit. A holder holds the current gate signal at the voltage level. An inverter turns on/off the holder in response to a first clock signal. A ripple preventer has a source and a gate coupled in common to an output terminal of the pull-up unit and a drain coupled to an input terminal of the inverter, and includes a ripple preventing diode for preventing a ripple from being applied to the inverter.
Public/Granted literature
- US20090040203A1 Gate driving circuit and display device having the same Public/Granted day:2009-02-12
Information query
IPC分类: