Invention Grant
- Patent Title: Pixel circuit with photo-sensing function, a driving method, and a display apparatus
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Application No.: US16763348Application Date: 2019-05-22
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Publication No.: US11289010B2Publication Date: 2022-03-29
- Inventor: Shengji Yang , Xiaochuan Chen , Hui Wang , Kuanta Huang , Pengcheng Lu
- 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
- Agency: Intellectual Valley Law, P.C.
- International Application: PCT/CN2019/087894 WO 20190522
- International Announcement: WO2020/232654 WO 20201126
- Main IPC: G09G3/32
- IPC: G09G3/32 ; G06F3/041

Abstract:
The present application discloses a pixel driving circuit with touch-sensing function. The driving circuit includes a first drive-control sub-circuit, a display-drive sub-circuit, a second drive-control sub-circuit, and an emission-control sub-circuit connected in series to generate a drive-current to drive a light-emission device in the subpixel under control of an emission-control signal in a respective one of multiple emission duty periods of a cycle time for displaying one frame of image. The drive circuit also includes a data-input sub-circuit and a charge sub-circuit to set a first voltage to the control terminal of the display-drive sub-circuit. Additionally, the drive circuit includes a photo-sensing sub-circuit configured to reset a photo-sensing device integrated with the light-emission device in the subpixel for touch sensing in a touch-sensing period before entering any one of the multiple emission duty periods of the cycle time.
Public/Granted literature
- US20210407379A1 A PIXEL CIRCUIT WITH PHOTO-SENSING FUNCTION, A DRIVING METHOD, AND A DISPLAY APPARATUS Public/Granted day:2021-12-30
Information query
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