Invention Grant
- Patent Title: Display device, pixel circuit, and method for driving same
- Patent Title (中): 显示装置,像素电路及其驱动方法
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Application No.: US12937890Application Date: 2009-02-16
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Publication No.: US08648776B2Publication Date: 2014-02-11
- Inventor: Seiji Ohhashi
- Applicant: Seiji Ohhashi
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2008-131568 20080520
- International Application: PCT/JP2009/052477 WO 20090216
- International Announcement: WO2009/142033 WO 20091126
- Main IPC: G09G3/30
- IPC: G09G3/30

Abstract:
A display device has a pixel circuit (100) including: a drive element (110) provided on a path connecting a first wiring line (Vp) to a second wiring line (Vcom), having a control terminal, a first terminal, and a second terminal, and controlling a current flowing through the path; an electro-optic element (130) provided in series with the drive element (110) on the path, being connected to the first terminal of the drive element (110), and emitting light at a luminance according to the current flowing through the path; a first switching element (111) provided between the first terminal of the drive element (110) and a data line (Sj); a second switching element (112) provided between the control terminal and the second terminal of the drive element (110); a third switching element (113) provided between the second terminal of the drive element (110) and the first wiring line (Vp); and a capacitor (121) provided between the control terminal of the drive element (110) and a third wiring line (Ui). In the display device, a potential at which a voltage applied to the electro-optic element (130) is a light-emission threshold voltage or less is provided to the data line (Sj), and a potential of the third wiring line (Ui) changes in two levels.
Public/Granted literature
- US20110037788A1 DISPLAY DEVICE, PIXEL CIRCUIT, AND METHOD FOR DRIVING SAME Public/Granted day:2011-02-17
Information query
IPC分类: