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.