Invention Grant
- Patent Title: Fingerprint readout circuit and display panel thereof
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Application No.: US16975164Application Date: 2020-06-30
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Publication No.: US11804062B2Publication Date: 2023-10-31
- Inventor: Juncheng Xiao , Chao Tian , Yanqing Guan , Yongxiang Zhou
- Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Applicant Address: CN Hubei
- Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Current Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Current Assignee Address: CN Wuhan
- Priority: CN 2010540212.4 2020.06.15
- International Application: PCT/CN2020/099094 2020.06.30
- International Announcement: WO2021/253485A 2021.12.23
- Date entered country: 2020-08-24
- Main IPC: G06V40/13
- IPC: G06V40/13 ; G06V10/147 ; H03F3/04

Abstract:
A fingerprint readout circuit and a display panel are disclosed. The fingerprint readout circuit includes a voltage amplifier unit, a fingerprint readout unit, and a source follower unit. The voltage amplifier unit is coupled to the fingerprint readout unit and the source follower unit, and the fingerprint readout unit is coupled to the source follower unit. The fingerprint readout circuit has both current and voltage amplification functions. Therefore, a voltage difference is amplified, facilitating reading out fingerprint signals accurately and enhancing fingerprint readout precision and accuracy.
Public/Granted literature
- US20230100833A1 FINGERPRINT READOUT CIRCUIT AND DISPLAY PANEL THEREOF Public/Granted day:2023-03-30
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