Patent · US Active

Detection circuit, skin print recognition device and driving method

US11620848B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

BOE Technology Group Co., Ltd. · CN

Inventors

Xueyou Cao · Beijing, CN
Pengpeng Wang · Beijing, CN
Xiaoliang Ding · Beijing, CN
Haisheng Wang · Beijing, CN
Ping Zhang · Beijing, CN
Wenjuan WANG · Beijing, CN
Yapeng Li · Dalian, CN
Jiabin Wang · Beijing, CN
Likai Deng · Beijing, CN

Key dates

Filing date	Nov 1, 2019
Grant date	Apr 4, 2023
Priority date	—
Expiry date	Jul 9, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01J2001/446
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A detection circuit, a skin print recognition device and a method for driving a detection circuit are disclosed. The detection circuit includes a photosensitive element, a switching sub-circuit and a charge releasing sub-circuit. The photosensitive element is electrically coupled to the switching sub-circuit and the charge releasing sub-circuit, and is configured to convert a received optical signal into an electrical signal, the switching sub-circuit is configured to output the electrical signal, and the charge releasing sub-circuit is configured to release charges in the photosensitive element after the switching sub-circuit outputs the electrical signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.