公开(公告)号：US09990530B2

公开(公告)日：2018-06-05

申请号：US15254164

申请日：2016-09-01

Applicant: AU OPTRONICS CORPORATION

Inventor： Hao-Lun Hsieh ,  Ching-Wen Chen ,  Rong-Ann Lin ,  Ming-I Huang ,  Chun Chang

IPC: G06K9/00 ,  H01L29/868 ,  H01L51/52 ,  H01L27/32 ,  H01L51/50 ,  H01L25/16 ,  H01L29/872

CPC classification number: G06K9/0004 ,  H01L25/167 ,  H01L27/3234 ,  H01L29/868 ,  H01L29/872 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5281

Abstract: A fingerprint sensing device includes a plurality of sensing units. Each sensing unit includes: a readout element, a photosensitive element, a light emitting element and a diode. The photosensitive element is electrically connected to the readout element. The light emitting element is disposed corresponding to the photosensitive element, and includes a first anode, a first cathode, and a light emitting layer located between the first anode and the first cathode. The diode includes a second anode and a second cathode, and a semiconductor layer located between the second anode and the second cathode. The second anode is electrically connected to the first cathode of the light emitting element, and the second cathode is electrically connected to the first anode of the light emitting element.

公开(公告)号：US20220338746A1

公开(公告)日：2022-10-27

申请号：US17519570

申请日：2021-11-04

Applicant: Au Optronics Corporation

Inventor： Ming-I Huang ,  Yu-Jung Liu ,  Chien Cheng Wang

IPC: A61B5/0245

Abstract: A pulse sensor and a pulse sensing system are provided. The pulse sensor includes a pressure sensing circuit, a reference circuit, and an output circuit. The pressure sensing circuit may sense a pulse vibration to generate a sensing signal. The reference circuit may generate a reference signal according to a base signal. A first input terminal of the output circuit is coupled to the pressure sensing circuit. A second input terminal of the output circuit is coupled to the reference circuit. The output circuit generates a pulse sensing current at an output terminal of the output circuit according to a difference between the sensing signal and the reference signal.