Invention Grant
- Patent Title: Optical signal modulation circuit and modulation method thereof, array substrate, display substrate and display device
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Application No.: US15679233Application Date: 2017-08-17
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Publication No.: US10509939B2Publication Date: 2019-12-17
- Inventor: Rui Xu , Haisheng Wang , Xiaoliang Ding , Yingming Liu , Shengji Yang
- 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: Calfee, Halter & Griswold LLP
- Priority: CN201610814201 20160909
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G09G3/3241 ; G09G3/20 ; G09G3/3225
Abstract:
An optical signal modulation circuit is configured to provide an optical signal for a fingerprint recognition process. The optical signal modulation circuit includes a first modulation unit and a first control unit. The first modulation unit has a control terminal connected to a signal output terminal of a first control unit, a signal input terminal connected to a first modulation signal terminal, and a signal output terminal connected to a light emitting element.
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