公开(公告)号：US10008659B2

公开(公告)日：2018-06-26

申请号：US14814969

申请日：2015-07-31

Applicant: LG INNOTEK CO., LTD.

Inventor： Jae Wan Park ,  Jung Hwan Bang ,  Sin Ae Jang ,  Jong Seon Jeong ,  Dong Keun Lee ,  Kyoung Jong Yoo

IPC: H01L41/113 ,  G06K9/00 ,  H01L41/047

CPC classification number: H01L41/1132 ,  G06K9/00013 ,  G06K9/0002 ,  G06K9/0004 ,  H01L41/047 ,  H01L41/0477

Abstract: A fingerprint sensor includes a substrate, a first electrode on the substrate, a piezoelectric layer on the first electrode, and a second electrode on the piezoelectric layer.

公开(公告)号：US10055629B2

公开(公告)日：2018-08-21

申请号：US14814572

申请日：2015-07-31

Applicant: LG INNOTEK CO., LTD.

Inventor： Seung Jin Kim ,  Jae Wan Park ,  Hyun Soo Kim ,  Jung Hwan Bang ,  Dong Keun Lee ,  Sin Ae Jang ,  Jong Seon Jeong ,  Kyoung Jong Yoo

IPC: G06K9/00 ,  G06F3/041

CPC classification number: G06K9/0002 ,  G06F3/041 ,  G06K9/00053

Abstract: A fingerprint sensor includes a piezoelectric substrate, and an electrode on the piezoelectric substrate. The electrode includes a first electrode and a second electrode on at least one of one surface of the piezoelectric substrate and an opposite surface opposite to the one surface. The electrode includes a node area in which the first electrode crosses the second electrode, and the node area transmits and receives a signal by an object that makes contact with the node area or approaches the node area in a direction of the piezoelectric substrate. The fingerprint sensor includes a substrate including a first area to a fourth area. At least one of first and second electrodes is provided in the first area to the third area, and a chip connected with the first and second electrodes is provided in the fourth area.