公开(公告)号：US20210073508A1

公开(公告)日：2021-03-11

申请号：US16676809

申请日：2019-11-07

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chun-Yen LIN ,  Ping LIU ,  Chi-Ting CHEN

IPC: G06K9/00

Abstract: An operating method of an optical fingerprint capture apparatus includes: by the apparatus upon receipt of a scan command from a host, entering an exposure mode where an image sensor thereof is exposed to light carrying information of a fingerprint; by the apparatus upon complete exposure of the image sensor to the light, entering a sample mode where multiple pieces of pixel data that cooperatively represent an image of the fingerprint are obtained and written to a data buffer thereof; and by the apparatus at a predetermined output time point that is later than a start of the sample mode and earlier than an end of the sample mode, outputting an interrupt request to cause the host to start reading the pieces of pixel data from the data buffer.

公开(公告)号：US20200380235A1

公开(公告)日：2020-12-03

申请号：US16424506

申请日：2019-05-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Chen CHUNG ,  Chi-Ting CHEN

IPC: G06K9/00 ,  G06K9/20

Abstract: A fingerprint sensing apparatus having a large-area sensing mechanism is provided that includes at least three optical fingerprint sensing circuits and a processing circuit. The at least three optical fingerprint sensing circuits are configured to perform sensing within a plurality of sensing areas to obtain a plurality of sensed images, wherein each of the sensing areas corresponds to one of the optical fingerprint sensing circuits. The processing circuit is electrically coupled to the optical fingerprint sensing circuits to receive the sensed images and is configured to splice the sensed images together to form an integrated sensed image.

公开(公告)号：US20200292796A1

公开(公告)日：2020-09-17

申请号：US16885302

申请日：2020-05-28

Applicant: NOVATEK Microelectronics Corp.

Inventor： Feng-Jung KUO ,  Min HUANG ,  Jung-Chung LEE ,  Chi-Ting CHEN ,  Li-Yuan CHANG ,  I-Hsiu CHEN ,  Chin-Hui HUANG

IPC: G02B13/14 ,  G02B6/00 ,  G02B1/11 ,  G02B5/00 ,  G02B5/20 ,  G02B7/02

Abstract: An optical fingerprint sensing module includes an image sensing device, a light source and a light shielding structure. The image sensing device is configured to sense light transmitted from a fingerprint of a finger on a display panel. The image sensing device includes a light sensing plane having a first geometric center. The light source includes a light emitting plane having a second geometric center. The first geometric center is separated from the second geometric center by a distance from 2 mm to 20 mm. The light shielding structure is disposed between the image sensing device and the light source. In examples, the optical fingerprint sensing module further includes a field angle controller to constrain light pass there through with a field angle of 5-60 degrees. A display device including an optical fingerprint sensing module is disclosed herein as well.

公开(公告)号：US20210365660A1

公开(公告)日：2021-11-25

申请号：US17324116

申请日：2021-05-19

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting CHEN

IPC: G06K9/00

Abstract: An optical fingerprint sensing device includes optical sensing pixels, optical blocked pixels and a readout circuit. Each of the optical sensing pixels includes a first photodevice for sensing an illumination through an optical path. The optical sensing pixels are configured to generate sensing signals. Each of the optical blocked pixels includes a second photodevice blocked from the illumination. The optical sensing pixels are configured to generate a plurality of tracking signals. The readout circuit is configured to generate output signals according to differences between the sensing signals and the tracking signals.

公开(公告)号：US20210182527A1

公开(公告)日：2021-06-17

申请号：US16713013

申请日：2019-12-13

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Chen CHUNG ,  Chi-Ting CHEN

IPC: G06K9/00

Abstract: A fingerprint detection device comprises a plurality of fingerprint sensing circuits and a processor. The plurality of fingerprint sensing circuits is corresponding to a plurality of sensing zones respectively. The processor is electrically coupled to the fingerprint sensing circuits through a shared transmission bus. The processor is configured to receive information of a touched area of each of the sensing zones, determine a transmission sequence according to the touched area of each of the sensing zones, and control the fingerprint sensing circuits to transmit sensing information of the corresponding sensing zones to the processor through the shared transmission bus according to the transmission sequence.

公开(公告)号：US20210064838A1

公开(公告)日：2021-03-04

申请号：US16840445

申请日：2020-04-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting CHEN

IPC: G06K9/00 ,  G09G3/36 ,  G09G3/3225

Abstract: An object identifying method, suitable for an object identifying circuit configured to be disposed under a display panel, includes the following operations: displaying a black pattern by the display panel; generating a plurality of first sensing signals of a plurality of first sensor pixels of the display panel arranged in the black pattern; generating a plurality of second sensing signals of a plurality of second sensor pixels of the display panel arranged in a contact area with which the display panel contacting an object to be identified; adjusting voltage levels of the plurality of second sensing signals according to the plurality of first sensing signals; and generating an image corresponding to the object to be identified from the adjusted plurality of second sensing signals.