Display device and fingerprint sensing circuit

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12223761
APP PUB NO 20240078833A1
SERIAL NO

17929748

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Importance

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Abstract

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The fingerprint sensing circuit includes a photo detector, a capacitor, a current mirror and a switch circuit. The capacitor has a first terminal electrically connected to the first terminal of the photo detector. The current mirror has an input terminal electrically connected to the first terminal of the photo detector and an output terminal electrically connected to a sensing line. In an exposure period, the switch circuit turns off the current mirror. In a sensing period, the switch circuit turns on the current mirror to generate a current on the sensing line, and the detecting circuit is configured to generate a fingerprint signal according to the current.

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Patent Owner(s)

  • HIMAX TECHNOLOGIES LIMITED

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Yaw-Guang Tainan, TW 127 397
He, Jia-Ming Tainan, TW 33 33
Hou, Zong-You Tainan, TW 6 7

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