发明授权
- 专利标题: Pixel circuit and display device
- 专利标题(中): 像素电路和显示设备
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申请号: US13504074申请日: 2010-10-21
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公开(公告)号: US08654291B2公开(公告)日: 2014-02-18
- 发明人: Naoki Ueda , Yoshimitsu Yamauchi , Fumiki Nakano
- 申请人: Naoki Ueda , Yoshimitsu Yamauchi , Fumiki Nakano
- 申请人地址: JP Osaka-shi
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JP Osaka-shi
- 代理机构: Morrison & Foerster LLP
- 优先权: JP2009-248964 20091029; JP2010-094029 20100415; JP2010-228756 20101008
- 国际申请: PCT/JP2010/068581 WO 20101021
- 国际公布: WO2011/052472 WO 20110505
- 主分类号: G02F1/1337
- IPC分类号: G02F1/1337
摘要:
A display device in which low power consumption is realized without lowering an aperture ratio is provided. A liquid crystal capacitive element Clc is sandwiched between a pixel electrode 20 and an opposite electrode 80. The pixel electrode 20, one end of a first switch circuit 22, one end of a second switch circuit 23 and a first terminal of a second transistor T2 form an internal node N1. The other terminals of the first switch circuit 22 and the second switch circuit 23 are connected to a source line SL. The second switch circuit 23 is a series circuit composed of a first transistor T1 and a diode D1. A control terminal of the first transistor T1, a second terminal of the second transistor T2 and one end of a boost capacitive element Cbst form an output node N2. The other end of the boost capacitive element Cbst and the control terminal of the second transistor T2 are connected to a boost line BST and a reference line REF, respectively. The diode D1 has a rectifying function from the source line SL to the internal node N1.
公开/授权文献
- US20120218246A1 PIXEL CIRCUIT AND DISPLAY DEVICE 公开/授权日:2012-08-30
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