Invention Patent
- Patent Title: Drive device and display device
- Patent Title (中): 驱动装置和显示装置
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Application No.: JP2009206658Application Date: 2009-09-08
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Publication No.: JP2011061343APublication Date: 2011-03-24
- Inventor: YASUDA TSUKASA , MATSUMOTO ICHIRO , MATSUDA SATORU
- Applicant: Renesas Electronics Corp , ルネサスエレクトロニクス株式会社
- Assignee: Renesas Electronics Corp,ルネサスエレクトロニクス株式会社
- Current Assignee: Renesas Electronics Corp,ルネサスエレクトロニクス株式会社
- Priority: JP2009206658 2009-09-08
- Main IPC: H03K17/14
- IPC: H03K17/14 ; G09G3/20 ; G09G3/36 ; H03F1/30 ; H03K17/687
Abstract:
PROBLEM TO BE SOLVED: To provide a drive device that can achieve desired drive capability in a plurality of output amplifier circuits connected in parallel, and to provide a display device.
SOLUTION: The drive device (source driver 1) includes: the plurality of output amplifier circuits 10 connected in parallel; a bias wire (main bias wire 22) for supplying a bias voltage from a bias voltage supply source 25 to the plurality of output amplifier circuits; a power supply wire 31 for supplying power supply voltage from a power supply voltage supply source 35 to the plurality of output amplifier circuits; and a correction unit (buffer 26) for superimposing an offset voltage onto the bias voltage so that a difference between the power supply voltage and the bias voltage supplied to the plurality of output amplifier circuits 10 is to be desirable.
COPYRIGHT: (C)2011,JPO&INPIT
SOLUTION: The drive device (source driver 1) includes: the plurality of output amplifier circuits 10 connected in parallel; a bias wire (main bias wire 22) for supplying a bias voltage from a bias voltage supply source 25 to the plurality of output amplifier circuits; a power supply wire 31 for supplying power supply voltage from a power supply voltage supply source 35 to the plurality of output amplifier circuits; and a correction unit (buffer 26) for superimposing an offset voltage onto the bias voltage so that a difference between the power supply voltage and the bias voltage supplied to the plurality of output amplifier circuits 10 is to be desirable.
COPYRIGHT: (C)2011,JPO&INPIT
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