Invention Grant
- Patent Title: Pixel circuit comprising optical fingerprint sensing circuit, method for driving pixel circuit, and organic light-emitting display device
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Application No.: US17296856Application Date: 2019-06-03
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Publication No.: US11783617B2Publication Date: 2023-10-10
- Inventor: Byong Deok Choi , Yong Sang Yoo , Yong Duck Kim , Jeongmin Moon , Soonshin Jung , Moonbong Song , Kiseok Chang , Jihwan Jung
- Applicant: LG Display Co., Ltd. , Industry-University Cooperation Foundation Hanyang University
- Applicant Address: KR Seoul
- Assignee: LG Display Co., Ltd.,Industry-University Cooperation Foundation Hanyang University
- Current Assignee: LG Display Co., Ltd.,Industry-University Cooperation Foundation Hanyang University
- Current Assignee Address: KR Seoul; KR Seoul
- Agency: Fenwick & West LLP
- Priority: KR 20180173480 2018.12.31
- International Application: PCT/KR2019/006645 2019.06.03
- International Announcement: WO2020/141663A 2020.07.09
- Date entered country: 2021-05-25
- Main IPC: G06V40/13
- IPC: G06V40/13 ; G09G3/3208 ; G09G3/3233

Abstract:
Disclosed are a pixel circuit comprising an optical fingerprint sensing circuit, a method of driving a pixel circuit comprising an optical fingerprint sensing circuit, and a display device comprising a pixel circuit comprising an optical fingerprint sensing circuit. According to the present disclosure, the pixel circuit comprising an optical fingerprint sensing circuit comprises a pixel control circuit, the pixel control circuit comprising: a first photodetector which receives a light and generates a first signal; a second photodetector which receives a light and generates a second signal; and a self-illuminator which receives differential signals of the first signal and second signal and outputs an output signal, includes at least one transistor component and at least one capacitor component, and outputs a light on the basis of a data signal.
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