Invention Grant
- Patent Title: Liquid crystal driving apparatus
- Patent Title (中): 液晶驱动装置
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Application No.: US12999864Application Date: 2010-03-31
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Publication No.: US08970460B2Publication Date: 2015-03-03
- Inventor: Hiroshi Yaguma , Motoya Kumagai , Takashi Nagai , Sukenori Itou
- Applicant: Hiroshi Yaguma , Motoya Kumagai , Takashi Nagai , Sukenori Itou
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2009-089244 20090401; JP2009-091343 20090403; JP2009-294334 20091225
- International Application: PCT/JP2010/055827 WO 20100331
- International Announcement: WO2010/114014 WO 20101007
- Main IPC: G09G3/36
- IPC: G09G3/36
Abstract:
A voltage amplifier circuit (300) comprises: an input voltage generating unit (302) that generates an input voltage (VL1) based on a set value (SL); an operational amplifier (303) that amplifies the input voltage (VL1) such that the input voltage (VL1) becomes equal to a feedback voltage (VL3), thereby generating an output voltage (VL2); a feedback resistor unit (304) that performs a voltage division between the output voltage (VL2) applied to one end of the feedback resistor unit and a reference voltage (VL4) applied to the other end of the feedback resistor unit, thereby generating the feedback voltage (VL3); a selector control unit (305) that generates a selector control signal (SS) based on the set value (SL); and a selector (306) that selects, based on the selector control signal SS, the reference voltage (VL4) from a plurality of candidates (GND/VR).
Public/Granted literature
- US20110141098A1 LIQUID CRYSTAL DRIVING APPARATUS Public/Granted day:2011-06-16
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