Invention Grant
- Patent Title: Output stage circuit for gate driving circuit in LCD
- Patent Title (中): LCD驱动电路的输出级电路
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Application No.: US14724829Application Date: 2015-05-29
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Publication No.: US09524691B2Publication Date: 2016-12-20
- Inventor: Po-Ching Li , Chao-Chih Hsiao
- Applicant: NOVATEK Microelectronics Corp.
- Applicant Address: TW Hsin-Chu
- Assignee: NOVATEK Microelectronics Corp.
- Current Assignee: NOVATEK Microelectronics Corp.
- Current Assignee Address: TW Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Main IPC: H05B37/02
- IPC: H05B37/02 ; G09G3/36

Abstract:
Output stage circuit is added to the gate driving circuit of the LCD. The output stage circuit moderates the falling slope of the gate driving signal so as to reduce the feed-through phenomenon. The output stage circuit includes a discharge unit, coupled to a gate line of the gate driving circuit for discharging the gate line to a first supply voltage; a first charge unit, coupled to the gate line of the gate driving circuit for charging the gate line with a second supply voltage; a second charge unit, coupled to the gate line of the gate driving circuit for charging the gate line with the second supply voltage; and a control circuit for controlling the first and the second charge units, and the discharge unit according to a timing controller of the LCD; wherein the control circuit sequentially turns on the first and the second charge units.
Public/Granted literature
- US20150287377A1 Output Stage Circuit for Gate Driving Circuit in LCD Public/Granted day:2015-10-08
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