Invention Grant
- Patent Title: Pixel driving circuit and driving method thereof, display panel
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Application No.: US16972624Application Date: 2020-01-07
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Publication No.: US11308878B2Publication Date: 2022-04-19
- Inventor: Qikun Liu , Jiexin Zheng
- Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Applicant Address: CN Guangdong
- Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Current Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Current Assignee Address: CN Guangdong
- Agent Mark M. Friedman
- Priority: CN201911349977.3 20191224
- International Application: PCT/CN2020/070673 WO 20200107
- International Announcement: WO2021/128470 WO 20210701
- Main IPC: G09G3/3233
- IPC: G09G3/3233 ; G09G3/3291

Abstract:
A pixel driving circuit and a driving method thereof, and a display panel are provided. The pixel driving circuit includes a first transistor (T1), a second transistor (T2), a third transistor (T3), a first storage capacitor (Cst1), a second storage capacitor (Cst2) and an organic light emitting element (OLED). By appropriately designing capacitance of the two capacitors and dividing a gate voltage of the first transistor (T1), it can be ensured that a black screen is achieved and contrast of a display panel is improved even though a negative drift is seriously caused on a threshold voltage of T1.
Public/Granted literature
- US20210366390A1 PIXEL DRIVING CIRCUIT AND DRIVING METHOD THEREOF, DISPLAY PANEL Public/Granted day:2021-11-25
Information query
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