Invention Grant
- Patent Title: Pixel driving circuit, array substrate, display panel and display apparatus having the same, and driving method thereof
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Application No.: US15513279Application Date: 2016-08-23
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Publication No.: US10249238B2Publication Date: 2019-04-02
- Inventor: Youngyik Ko , Bo Wang , Yipeng Chen , Yi Zhang
- Applicant: BOE TECHNOLOGY GROUP CO., LTD. , CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Applicant Address: CN Beijing CN Chengdu
- Assignee: BOE TECHNOLOGY GROUP CO., LTD.,CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Current Assignee: BOE TECHNOLOGY GROUP CO., LTD.,CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Current Assignee Address: CN Beijing CN Chengdu
- Agency: Intellectual Valley Law, P.C.
- Priority: CN201610210384 20160406
- International Application: PCT/CN2016/096369 WO 20160823
- International Announcement: WO2017/173767 WO 20171012
- Main IPC: G09G3/325
- IPC: G09G3/325 ; G09G3/3233

Abstract:
The present application discloses a pixel driving circuit configured to operate in a display cycle including sequentially an initialization period, a compensation period, and a light-emitting period, the pixel driving circuit including a driving transistor having a gate, a source, and a drain; a first storage capacitor having a first terminal connected to the gate of the driving transistor and a second terminal connected to a first power signal input port; an emission control sub-circuit disposed between the source of the driving transistor and the first power signal input port; a data write-in sub-circuit disposed between a data input port and the drain of the driving transistor which is also connected to the emission control sub-circuit; a compensation sub-circuit disposed between the source of the driving transistor and the first terminal of the first storage capacitor; and a light emitting device having a first terminal connected to the emission control sub-circuit and a second terminal connected to a second power signal input port; the data write-in sub-circuit is configured to control a data voltage signal to be passed into the drain of the driving transistor during the compensation period; the compensation sub-circuit is configured to control a connection between the source and the gate of the driving transistor during the compensation period to set the driving transistor to a conduction state for inducing a source-to-drain current until a gate voltage of the driving transistor reaches a value substantially equal to the data voltage signal plus a threshold voltage of the driving transistor.
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