Invention Grant
- Patent Title: Display device and drive method thereof
- Patent Title (中): 显示装置及其驱动方法
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Application No.: US14358719Application Date: 2012-11-09
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Publication No.: US09401111B2Publication Date: 2016-07-26
- Inventor: Noritaka Kishi
- Applicant: Sharp Kabushiki Kaisha
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Morrison & Foerster LLP
- Priority: JP2011-252113 20111117
- International Application: PCT/JP2012/079102 WO 20121109
- International Announcement: WO2013/073466 WO 20130523
- Main IPC: G09G3/3233
- IPC: G09G3/3233 ; G09G3/32

Abstract:
A pixel circuit 10 is provided with TFTs 12 and 13 and an organic EL element 15 on a current path connecting a power supply line VPk and an electrode having a common potential Vcom. A display device 100 simultaneously performs initialization to pixel circuits 10 in a plurality of rows, simultaneously perform threshold detection to the pixel circuits 10 in the plurality of rows, sequentially writes data to the pixel circuits 10 row by row, and makes the organic EL elements 15 included in the pixel circuits 10 in the plurality of rows emit light in the same period. In a period from completion of threshold detection to start of light emission, the TFTs 11 and 13 are controlled to an off state, and a potential VP_C which is substantially equal to the common potential Vcom is applied to the power supply line VPk. Consequently, leak current flowing through the TFTs 12 and 13 can be suppressed, and the fluctuation in the node potential in the pixel circuit 10 in a standby period can be prevented.
Public/Granted literature
- US20140307012A1 DISPLAY DEVICE AND DRIVE METHOD THEREOF Public/Granted day:2014-10-16
Information query
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