公开(公告)号：US11922844B2

公开(公告)日：2024-03-05

申请号：US17241091

申请日：2021-04-27

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Wu-Wei Lin ,  Jiun-Jie Tsai ,  Huang-Chin Tang ,  Ching-Chun Lin

IPC: G09G3/20 ,  G06F3/041 ,  G06V40/13

CPC classification number: G09G3/20 ,  G06F3/0412 ,  G06F3/04184 ,  G06V40/1318 ,  G09G2310/0286 ,  G09G2360/144

Abstract: An integrated driving device is provided. The integrated driving device includes a touch sensing circuit and an optical sensing circuit. The touch sensing circuit is configured to perform touch sensing in a plurality of touch sensing periods during a first frame period. The optical sensing circuit is configured to perform optical sensing during at least one optical sensing period during the first frame period to obtain optical sensing signals for generating first ambient light information. The touch sensing periods and the optical sensing period are non-overlapping. Correspondingly, an operation method of an integrated driving device is also provided.

公开(公告)号：US11854451B2

公开(公告)日：2023-12-26

申请号：US17553730

申请日：2021-12-16

Applicant: Novatek Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Wei-Lun Shih ,  Huang-Chin Tang

IPC: G06V40/13 ,  G09G3/20 ,  G06F3/041

CPC classification number: G09G3/20 ,  G06F3/0412 ,  G06V40/13 ,  G06V40/1318 ,  G09G2310/0272

Abstract: An electronic circuit adapted to process fingerprint data from a panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a first circuit, a second circuit and a control circuit. The first circuit is configured to receive touch sensing signals from the touch sensors. The second circuit is configured to receive fingerprint sensing signals corresponding to at least one fingerprint imprint from the fingerprint sensors via fingerprint sensing lines. The control circuit is configured to determine a fingerprint touch area according to the touch sensing signals, and select a subset of the fingerprint sensing lines to form a fingerprint sensing zone adapted for a fingerprint sensing operation and including at least one boundary based on the determined fingerprint touch area. The subset of fingerprint sensing lines is selected based on the at least one boundary of the fingerprint sensing zone. An electronic device and a method for sensing at least one fingerprint imprint from a panel are also provided.

公开(公告)号：US20230376136A1

公开(公告)日：2023-11-23

申请号：US18199970

申请日：2023-05-21

Applicant: NOVATEK Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Ting-Hsuan Hung

IPC: G06F3/041 ,  G06F3/042 ,  G06F3/14

CPC classification number: G06F3/0412 ,  G06F3/0421 ,  G06F3/1407 ,  G06F2203/04106

Abstract: A panel device includes a touch sensor, a first light sensor and a second light sensor, a first trace, a second trace and a control circuit. The touch sensor is disposed in a first area of the panel device to generate a touch sensing signal. The first light sensor and the second light sensor are disposed in a second area of the panel device to sense ambient light and generate a first light sensing signal and a second light sensing signal. The first trace is coupled to the first light sensor. The second trace is coupled to the second light sensor. The control circuit connects the first trace and the second trace and receives the first light sensing signal and the second light sensing signal at the same time to determine an ambient brightness. Sensitivities of the first light sensor and the second light sensor are different.

公开(公告)号：US11798309B2

公开(公告)日：2023-10-24

申请号：US17720115

申请日：2022-04-13

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Wei-Lun Shih ,  Yuan-Heng Lu ,  Ting-Hsuan Hung ,  Jia-Lin Chen

IPC: G06V40/13 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06V40/1306 ,  G06F3/0412 ,  G06F3/0446 ,  G06F3/04164 ,  G06F3/04166

Abstract: Provided are a fingerprint identification method for a panel, an electronic device and a control circuit. The method includes setting voltages on the data lines and sensing lines that may affect a fingerprint identification result to a predetermined DC voltage during a predetermined time period before a start of a fingerprint identification period that follows a display driving period. As such, when a display driving operation and a fingerprint identification operation are performed in a time-division manner, the influence of the display driving operation on the fingerprint identification operation can be eliminated, that is, the influence on the fingerprint identification result from the voltage on the data line and sensing line can be eliminated.

公开(公告)号：US11625939B2

公开(公告)日：2023-04-11

申请号：US16933952

申请日：2020-07-20

Applicant: Novatek Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Tzu-Wen Hsieh ,  Wei-Lun Shih ,  Huang-Chin Tang

IPC: G06V40/13 ,  G06F3/041 ,  G09G3/20

Abstract: An electronic circuit adapted to drive a display panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a first circuit, a second circuit, a first switch circuit and a control circuit. The first circuit generates display driving signals for driving the display panel. The second circuit receives fingerprint sensing signals from the fingerprint sensors. The first switch circuit is coupled to a second switch circuit on the display panel. The control circuit generates control signals for controlling the first switch circuit and the second switch circuit, so as to control the electronic circuit to transmit the display driving signals from the first circuit to the data lines through the first and the second switch circuits in a first time interval, and control the electronic circuit to receive the fingerprint sensing signals from the fingerprint sensors through the first and the second switch circuits in a second time interval.

公开(公告)号：US11423685B2

公开(公告)日：2022-08-23

申请号：US16845001

申请日：2020-04-09

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Tsen-Wei Chang ,  Cho-Hsuan Jhang ,  Chih-Peng Hsia ,  Cheng-Yu Chiang

IPC: G06V40/13

Abstract: A driving apparatus and an operation method thereof are provided. The driving apparatus includes a first driving circuit and a second driving circuit. The first driving circuit performs a first driving mode on a panel. The first driving circuit performs the first driving mode during a first frame period among a plurality of frame periods and skips the first driving mode during a first skip period between the first frame period and a second frame period among the frame periods. The first driving circuit outputs timing control signal including a timing that the first driving mode is skipped. The second driving circuit is coupled to the first driving circuit to receive the timing control signal. The second driving circuit performs a fingerprint sensing operation different from the first driving mode on the panel according to the timing control signal during the first skip period.

公开(公告)号：US11030435B1

公开(公告)日：2021-06-08

申请号：US16828918

申请日：2020-03-24

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ting-Hsuan Hung ,  Wei-Lun Shih ,  Wu-Wei Lin

IPC: G06K9/00 ,  G06K9/03 ,  G06K9/20

Abstract: A method of sensing an image from a panel for an image sensing circuit includes the steps of: transmitting a first voltage or current to the panel; receiving a plurality of sensing signals from the panel, wherein the plurality of sensing signals correspond to the first voltage or current; determining whether the plurality of sensing signals conform to an operation range of the image sensing circuit; and adjusting the first voltage or current when the plurality of sensing signals are determined to be not conform to the operation range of the image sensing circuit.

公开(公告)号：US20210034835A1

公开(公告)日：2021-02-04

申请号：US16907306

申请日：2020-06-21

Applicant: Novatek Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Wei-Lun Shih ,  Huang-Chin Tang

IPC: G06K9/00

Abstract: An electronic circuit including a touch control circuit, a fingerprint sensing circuit and a switch circuit is provided. The touch control circuit is configured to receive touch sensing signals from a panel and determine a touch area according to the touch sensing signals. The fingerprint sensing circuit is configured to receive fingerprint sensing signals corresponding to at least one fingerprint image from fingerprint sensors disposed in the panel via fingerprint sensing lines. The switch circuit is coupled to the fingerprint sensing circuit. The switch circuit is configured to be coupled to a part of the fingerprint sensing lines that is selected to form a fingerprint sensing zone for a fingerprint sensing operation according to the determined touch area. Each of the fingerprint sensing lines is selectable to be a boundary of the fingerprint sensing zone. An electronic device and a method for sensing at least one fingerprint image are also provided.

公开(公告)号：US20230316800A1

公开(公告)日：2023-10-05

申请号：US18321730

申请日：2023-05-22

Applicant: Novatek Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Wei-Lun Shih ,  Huang-Chin Tang

IPC: G09G3/20 ,  G06V40/13 ,  G06F3/041

CPC classification number: G06V40/13 ,  G06F3/0412 ,  G06V40/1318 ,  G09G3/20 ,  G09G2310/0272

Abstract: An imaging control circuit for collecting object image data for an object presented on a portion of a surface of a display panel is provided. The imaging control circuit includes a first circuit, a second circuit and a third circuit. The first circuit is adapted to receive touch sensing signals from a set of touch sensors located in the display panel. The second circuit is adapted to receive object image sensing signals from a set of imaging sensors. The object image sensing signals are associated with the object detected on the surface of the display panel. The third circuit is adapted to determine a location of the object from the touch sensing signals and generate a variable sized object imaging zone based on a location and a size of an object image. The variable sized object imaging zone includes a variable subset of the imaging sensors.

公开(公告)号：US20230177996A1

公开(公告)日：2023-06-08

申请号：US18163287

申请日：2023-02-02

Applicant: Novatek Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Wei-Lun Shih ,  Huang-Chin Tang

IPC: G09G3/20 ,  G06F3/041 ,  G06V40/13

CPC classification number: G09G3/20 ,  G06F3/0412 ,  G06V40/1318 ,  G09G2310/0272

Abstract: An electronic circuit includes a fingerprint sensing circuit that is configured to receive fingerprint sensing signals corresponding to a fingerprint image from fingerprint sensors via fingerprint sensing lines. The fingerprint sensing circuit is further configured to select a subset of the fingerprint sensing lines to form a fingerprint sensing zone having at least one boundary and adapted for a fingerprint sensing operation based on a fingerprint touch area. The subset of fingerprint sensing lines is selected based on the at least one boundary of the fingerprint sensing zone. The fingerprint sensing circuit is further configured to generate the fingerprint image according to the fingerprint sensing signals by a remapping operation.