- 专利标题: Fingerprint identification pixel driving circuit and method for driving the same, display panel
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申请号: US17043318申请日: 2020-04-22
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公开(公告)号: US11651725B2公开(公告)日: 2023-05-16
- 发明人: Lijun Zhao , Yingming Liu , Haisheng Wang , Yanling Han , Yuzhen Guo , Chenyang Zhang
- 申请人: BOE Technology Group Co., Ltd.
- 申请人地址: CN Beijing
- 专利权人: BOE TECHNOLOGY GROUP CO., LTD.
- 当前专利权人: BOE TECHNOLOGY GROUP CO., LTD.
- 当前专利权人地址: CN Beijing
- 代理机构: Nath, Goldberg & Meyer
- 代理商 Joshua B. Goldberg
- 优先权: CN 1910412183.0 2019.05.17
- 国际申请: PCT/CN2020/086048 2020.04.22
- 国际公布: WO2020/233321A 2020.11.26
- 进入国家日期: 2020-09-29
- 主分类号: G09G3/32
- IPC分类号: G09G3/32 ; G06V40/13
摘要:
There is provided a fingerprint identification pixel driving circuit, including: a fingerprint signal identification element configured to transmit an ultrasonic wave and receive a reflected ultrasonic wave according to a voltage of a first node and a signal of a second signal terminal to generate a sensing signal; a drive reading element configured to drive a light emitting element according to the voltage of the first node and generate a sensing current according to the sensing signal; a fingerprint signal reading element configured to output the sensing current; a pixel charging element configured to write a signal of a data line terminal to a storage element; the storage element configured to store the sensing signal or the signal of the data line terminal; a light emitting control element configured to control light emitting of the light emitting element; and the light emitting element configured to emit light.
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