Invention Grant
US07880708B2 Power control method and system for polarity inversion in LCD panels
有权
LCD面板极性反转功率控制方法及系统
- Patent Title: Power control method and system for polarity inversion in LCD panels
- Patent Title (中): LCD面板极性反转功率控制方法及系统
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Application No.: US11758334Application Date: 2007-06-05
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Publication No.: US07880708B2Publication Date: 2011-02-01
- Inventor: Ping Po Chen
- Applicant: Ping Po Chen
- Applicant Address: TW Tainan County
- Assignee: Himax Technologies Limited
- Current Assignee: Himax Technologies Limited
- Current Assignee Address: TW Tainan County
- Agency: WPAT, P.C.
- Agent Anthony King
- Main IPC: G09G3/36
- IPC: G09G3/36
Abstract:
A power control method for polarity inversion in an LCD panel comprises the step of providing a storage capacitor on a circuit board. Thereafter, the storage capacitor is charged to a first middle voltage. Next, the voltage of the VCOM channel is pulled up by a common output amplifier, only from the first middle voltage to a first upper voltage during a positive polarity period. Also, the voltage of the VCOM channel is pulled down by the common output amplifier, only from the first middle voltage to a first lower voltage during a negative polarity period.
Public/Granted literature
- US20080303773A1 POWER CONTROL METHOD AND SYSTEM FOR POLARITY INVERSION IN LCD PANELS Public/Granted day:2008-12-11
Information query
IPC分类:
