公开(公告)号：US20230215214A1

公开(公告)日：2023-07-06

申请号：US18088624

申请日：2022-12-26

Applicant: Novatek Microelectronics Corp.

Inventor： Shu-Fang Wang ,  Wan-Ting Huang ,  Kuan-Ting Lee

IPC: G06V40/12 ,  G06V40/13

CPC classification number: G06V40/1394 ,  G06V40/1388 ,  G06V40/1318 ,  G06V40/1365

Abstract: An optical fingerprint recognition device includes a light-emitting diode (LED) array and a fingerprint sensing device. The LED array includes a central LED area and an edge LED area, and configured to display a light source pattern in response to a fingerprint sensing request. The light source pattern includes a central portion and a surrounding portion. During displaying the light source pattern, a plurality of red display subpixels of the central LED area are not illuminating and a plurality of red display subpixels of the edge LED area are illuminating. The fingerprint sensing device generates a first fingerprint image according to a plurality of first sensing signals obtained from a plurality of first sensing pixel area, and the first fingerprint image is adapted to be used for examining whether a finger which triggers the fingerprint sensing request is real or fake.

公开(公告)号：US11961324B2

公开(公告)日：2024-04-16

申请号：US18088624

申请日：2022-12-26

Applicant: Novatek Microelectronics Corp.

Inventor： Shu-Fang Wang ,  Wan-Ting Huang ,  Kuan-Ting Lee

IPC: G06F3/041 ,  G06V40/12 ,  G06V40/13

CPC classification number: G06V40/1394 ,  G06V40/1318 ,  G06V40/1365 ,  G06V40/1388

Abstract: An optical fingerprint recognition device includes a light-emitting diode (LED) array and a fingerprint sensing device. The LED array includes a central LED area and an edge LED area, and configured to display a light source pattern in response to a fingerprint sensing request. The light source pattern includes a central portion and a surrounding portion. During displaying the light source pattern, a plurality of red display subpixels of the central LED area are not illuminating and a plurality of red display subpixels of the edge LED area are illuminating. The fingerprint sensing device generates a first fingerprint image according to a plurality of first sensing signals obtained from a plurality of first sensing pixel area, and the first fingerprint image is adapted to be used for examining whether a finger which triggers the fingerprint sensing request is real or fake.