发明授权
- 专利标题: Gate driving circuit and display apparatus having the same
- 专利标题(中): 栅极驱动电路及其显示装置
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申请号: US12338182申请日: 2008-12-18
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公开(公告)号: US08098227B2公开(公告)日: 2012-01-17
- 发明人: Hong-Woo Lee , Jong-Hwan Lee , Beom-Jun Kim , Sung-Man Kim , Gyu-Tae Kim , Kyoung-Jun Jang
- 申请人: Hong-Woo Lee , Jong-Hwan Lee , Beom-Jun Kim , Sung-Man Kim , Gyu-Tae Kim , Kyoung-Jun Jang
- 申请人地址: KR
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR
- 代理机构: Cantor Colburn LLP
- 优先权: KR10-2008-0009212 20080129
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
A gate driving circuit includes cascaded stages, each including a pull-up part, a carry part, a pull-up driving part, a holding part and an inverter. The pull-up part pulls up a gate voltage to an input clock. The carry part pulls up a carry voltage to the input clock. The pull-up driving part is connected to a control terminal (Q-node) common to the carry part and the pull-up part, and receives a previous carry voltage from a previous stage to turn on the pull-up part and the carry part. The holding part holds the gate voltage at an off-voltage, and the inverter controls at least one of turning on the holding part and turning off the holding part based on an inverter clock. A high level of the inverter clock in a given horizontal period (1H) temporally precedes a high level of the input clock by a predetermined time interval.