Invention Grant
US09355597B2 Pixel circuit having threshold voltage compensation and method for driving the same 有权
具有阈值电压补偿的像素电路及其驱动方法

  • Patent Title: Pixel circuit having threshold voltage compensation and method for driving the same
  • Patent Title (中): 具有阈值电压补偿的像素电路及其驱动方法
  • Application No.: US14342306
    Application Date: 2013-07-26
  • Publication No.: US09355597B2
    Publication Date: 2016-05-31
  • Inventor: Fei Yang
  • Applicant: BOE TECHNOLOGY GROUP CO., LTD.
  • Applicant Address: CN Beijing
  • Assignee: BOE TECHNOLOGY GROUP CO., LTD.
  • Current Assignee: BOE TECHNOLOGY GROUP CO., LTD.
  • Current Assignee Address: CN Beijing
  • Priority: CN201310190350 20130521
  • International Application: PCT/CN2013/080156 WO 20130726
  • International Announcement: WO2014/187026 WO 20141127
  • Main IPC: G09G3/30
  • IPC: G09G3/30 G09G3/32 G09G3/10
Pixel circuit having threshold voltage compensation and method for driving the same
Abstract:
The present disclosure relates to a field of display technology, and particularly to a pixel circuit and a method for driving the same. The pixel circuit includes a driving sub-circuit, a resetting sub-circuit, and a charging sub-circuit, wherein the driving sub-circuit includes a driving transistor, a first transistor, a third transistor, a first storage capacitor and a second storage capacitor; the resetting sub-circuit discharges the first storage capacitor and the second storage capacitor under the control of a first scan signal outputted from the first scan signal line; and the charging sub-circuit includes a fifth transistor and a sixth transistor. With the pixel circuit of the present disclosure, non-uniformity of driving transistors caused by threshold voltages of the driving transistors and an image sticking phenomenon caused by drifts of the threshold voltages of the driving transistors may be eliminated through the compensation; and the problem of non-uniform luminance among the light emitting devices in different pixel units of an Active Matrix Organic Light Emitting Diode Display caused by different threshold voltages of the driving transistors in the different pixel units may be avoided.
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