Invention Grant
US08625038B2 Method for setting transistor operating point and circuit therefor, method for changing signal component value and active-matrix liquid crystal display device
有权
用于设置晶体管工作点及其电路的方法，用于改变信号分量值的方法和有源矩阵液晶显示装置
- Patent Title: Method for setting transistor operating point and circuit therefor, method for changing signal component value and active-matrix liquid crystal display device
- Patent Title (中): 用于设置晶体管工作点及其电路的方法，用于改变信号分量值的方法和有源矩阵液晶显示装置
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Application No.: US10479426Application Date: 2002-06-04
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Publication No.: US08625038B2Publication Date: 2014-01-07
- Inventor: Ken-ichi Takatori
- Applicant: Ken-ichi Takatori
- Applicant Address: WS Apia
- Assignee: Gold Charm Limited
- Current Assignee: Gold Charm Limited
- Current Assignee Address: WS Apia
- Agency: Altis Law Group, Inc.
- Priority: JP2001-168362 20010604
- International Application: PCT/JP02/05474 WO 20020604
- International Announcement: WO02/099519 WO 20021212
- Main IPC: G02F1/136
- IPC: G02F1/136
Abstract:
A data signal voltage on a signal line 102 is held in a voltage holding capacitor 106 through an n-type MOS transistor 103 switched on by a gate scan voltage, and supplied to an analog amplifier circuit 104-1. The analog amplifier circuit 104-1 is formed of an MOS transistor having a double gate structure, and the operating point thereof is set at an operating range in which dependence of Ids on Vds is substantially nullified. Even when Vds is varied due to a response of liquid crystal 109, Ids is substantially fixed. Accordingly, the pixel voltage which is substantially proportional to the data signal voltage can be applied to the liquid crystal 109.
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