Invention Grant
US08411015B2 Operational amplifier, source driver of a display, and method for controlling the operational amplifier thereof
有权
操作放大器，显示器的源极驱动器以及用于控制其运算放大器的方法
- Patent Title: Operational amplifier, source driver of a display, and method for controlling the operational amplifier thereof
- Patent Title (中): 操作放大器，显示器的源极驱动器以及用于控制其运算放大器的方法
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Application No.: US12340761Application Date: 2008-12-22
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Publication No.: US08411015B2Publication Date: 2013-04-02
- Inventor: Ching-Chung Lee
- Applicant: Ching-Chung Lee
- Applicant Address: TW Fonghua Village, Xinshi Dist., Tainan
- Assignee: Himax Technologies Limited
- Current Assignee: Himax Technologies Limited
- Current Assignee Address: TW Fonghua Village, Xinshi Dist., Tainan
- Agent Winston Hsu; Scott Margo
- Main IPC: G09G3/30
- IPC: G09G3/30
Abstract:
An operational amplifier includes a first stage, a second stage, and a switching unit. The first stage receives an analog input signal. The second stage has an output node coupled to an output switch. The switching unit is coupled between the first stage and the second stage. The switching unit includes a capacitive component and a first switch coupled to the capacitive component in series. The first switch is turned off when the output switch is turned on. The first switch is turned off while the analog input signal is in transition, and is turned on while the analog input signal is steady. The first switch is turned on when the output switch is turned off.
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Information query
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