公开(公告)号：US20220165083A1

公开(公告)日：2022-05-26

申请号：US17530381

申请日：2021-11-18

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Chi Lin ,  Chiu-Huang Huang ,  Jung-Chung Lee

IPC: G06V40/13 ,  G06F3/041

Abstract: A fingerprint sensing apparatus includes a plurality of fingerprint sensors and a fingerprint readout circuit. The fingerprint sensors may be configured to operate in a fingerprint sensing cycle. The fingerprint readout circuit may be coupled to the plurality of fingerprint sensors via a plurality of sensing lines. The fingerprint readout circuit may be configured to control the fingerprint sensors to operate in the fingerprint sensing cycle. The fingerprint sensing cycle includes an initialization period, an exposure period and a readout period. A voltage of a reset node in each fingerprint sensor among the fingerprint sensors is reset to a first voltage in a reset period before the fingerprint sensing cycle starts. The voltage of the reset node in each fingerprint sensor is initialized to an initial voltage in the initialization period. The initial voltage is different from the first voltage.

公开(公告)号：US11715322B2

公开(公告)日：2023-08-01

申请号：US17530381

申请日：2021-11-18

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Chi Lin ,  Chiu-Huang Huang ,  Jung-Chung Lee

IPC: G06V40/13 ,  G06F3/041

CPC classification number: G06V40/1318 ,  G06F3/04184

Abstract: A fingerprint sensing apparatus includes a plurality of fingerprint sensors and a fingerprint readout circuit. The fingerprint sensors may be configured to operate in a fingerprint sensing cycle. The fingerprint readout circuit may be coupled to the plurality of fingerprint sensors via a plurality of sensing lines. The fingerprint readout circuit may be configured to control the fingerprint sensors to operate in the fingerprint sensing cycle. The fingerprint sensing cycle includes an initialization period, an exposure period and a readout period. A voltage of a reset node in each fingerprint sensor among the fingerprint sensors is reset to a first voltage in a reset period before the fingerprint sensing cycle starts. The voltage of the reset node in each fingerprint sensor is initialized to an initial voltage in the initialization period. The initial voltage is different from the first voltage.

公开(公告)号：US20210088823A1

公开(公告)日：2021-03-25

申请号：US16831819

申请日：2020-03-27

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Chi Lin ,  Jung-Chung Lee

IPC: G02F1/1333 ,  G02F1/1335

Abstract: A fingerprint recognition apparatus with light-emitting sources disposed in medium layers between a display panel and a sensor is introduced. The display panel displays according to a first light signal. The fingerprint recognition apparatus comprises: a sensor sensing the fingerprint according to a second light signal; a first medium layer disposed between the display panel and the sensor including a first light-emitting source to emit the first light signal; and a second medium layer disposed between the first medium layer and the sensor including a second light-emitting source to emit the second light signal.