公开(公告)号：US11656716B2

公开(公告)日：2023-05-23

申请号：US17690016

申请日：2022-03-09

Applicant: NOVATEK Microelectronics Corp.

Inventor： Tsen-Wei Chang ,  Chih-Peng Hsia ,  Wei-Lun Shih ,  Hong-Chu Chen ,  Su-Wei Lien ,  Sheng-Wen Hsiao ,  Liang-Chi Cheng

IPC: G06F3/041 ,  G06F3/042 ,  G06V40/13 ,  G06F3/044

CPC classification number: G06F3/04164 ,  G06F3/0412 ,  G06F3/0421 ,  G06F3/0446 ,  G06V40/1318

Abstract: A control method for an optical fingerprint sensor and a touch controller is provided, for canceling or reducing capacitive loading. The optical fingerprint sensor includes a plurality of pixels, and each of the pixels has a first control signal line and a second control signal line. Each of the pixels is further coupled to a first voltage source line, a second voltage source line and a sensing line. The control method includes the step of configuring at least one of the first control signal line, the second control signal line, the first voltage source line, the second voltage source line and the sensing line to be floating when the touch controller is in a touch operation period.

公开(公告)号：US11615640B2

公开(公告)日：2023-03-28

申请号：US17155116

申请日：2021-01-22

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Wu Wei Lin

IPC: G06K9/20 ,  G06K9/36 ,  G06V40/13 ,  H04L67/12 ,  G09G3/36 ,  G06V20/40 ,  G06V10/147 ,  G06V40/12

Abstract: A driving device and an operation method thereof are provided. The driving device includes a first driving circuit and a second driving circuit. The first driving circuit performs a display driving operation to a display panel. The second driving circuit performs a fingerprint sensing operation (including a sensor reset operation and an image capture operation) to the display panel according to a timing control signal of the first driving circuit. The fingerprint sensing operation is operated with a same frame polarity configuration rule. The operation of “the same frame polarity configuration rule” comprises fixing a relation between a first polarity configuration (which is the frame polarity configuration of the display panel when performing the sensor reset operation on a same fingerprint frame) and a second polarity configuration (which is the frame polarity configuration of the display panel when performing the image capture operation on the same fingerprint frame) whenever the fingerprint sensing operation is performed.

公开(公告)号：US11551466B2

公开(公告)日：2023-01-10

申请号：US16851043

申请日：2020-04-16

Applicant: NOVATEK Microelectronics Corp.

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

IPC: G06F3/00 ,  G06V40/13 ,  G06F3/04817 ,  G09G5/10 ,  G06F3/041 ,  G06F3/0488 ,  G09G3/34 ,  G06F1/3234 ,  G06V10/141 ,  G06V40/60

Abstract: A control circuit configured to control a display panel includes a display driver circuit, a touch sensing circuit and a fingerprint sensing circuit. The touch sensing circuit, coupled to the display driver circuit and the fingerprint sensing circuit, is configured to detect a finger touch on the display panel, determine a position of the display panel on which the finger touch is detected, and send information associated with the position to the fingerprint sensing circuit. The fingerprint sensing circuit is configured to perform fingerprint sensing on at least one zone corresponding to the position and receive fingerprint image signals from the at least one zone correspondingly.

公开(公告)号：US11462044B2

公开(公告)日：2022-10-04

申请号：US17005325

申请日：2020-08-28

Applicant: Novatek Microelectronics Corp.

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

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

Abstract: A chip, an electronic device, a panel and an operation method thereof are provided. The chip can control the panel to perform fingerprint sensing. Fingerprint sensing pixels of the panel are divided into a plurality of fingerprint zones along a column direction. The chip includes a selecting circuit and a control circuit. The selecting circuit obtains information about a selected fingerprint zone among the fingerprint zones. The control circuit provides multiple control signals for controlling the panel to perform fingerprint sensing. The control signals include multiple start pulse signals. The start pulse signals collectively indicate the selected fingerprint zone. The number of the fingerprint zones is greater than the number of the start pulse signals.

公开(公告)号：US20220197466A1

公开(公告)日：2022-06-23

申请号：US17690016

申请日：2022-03-09

Applicant: NOVATEK Microelectronics Corp.

Inventor： Tsen-Wei Chang ,  Chih-Peng Hsia ,  Wei-Lun Shih ,  Hong-Chu Chen ,  Su-Wei Lien ,  Sheng-Wen Hsiao ,  Liang-Chi Cheng

IPC: G06F3/041 ,  G06F3/042 ,  G06F3/044 ,  G06V40/13

Abstract: A control method for an optical fingerprint sensor and a touch controller is provided, for canceling or reducing capacitive loading. The optical fingerprint sensor includes a plurality of pixels, and each of the pixels has a first control signal line and a second control signal line. Each of the pixels is further coupled to a first voltage source line, a second voltage source line and a sensing line. The control method includes the step of configuring at least one of the first control signal line, the second control signal line, the first voltage source line, the second voltage source line and the sensing line to be floating when the touch controller is in a touch operation period.

公开(公告)号：US11270095B2

公开(公告)日：2022-03-08

申请号：US16921921

申请日：2020-07-06

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Tzu-Wen Hsieh ,  Huan-Teng Cheng ,  Huang-Chin Tang ,  Yueh-Teng Mai ,  Shi-Hao Huang ,  Jung-Chung Lee

IPC: G06K9/00 ,  G09G5/10 ,  G06F3/041 ,  G09G3/20

Abstract: An electronic circuit for driving a panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a touch sensing circuit, a fingerprint sensing circuit and a display driving circuit. The touch sensing circuit senses a touch of a finger and determines a first area corresponding to the touch on the panel. The fingerprint sensing circuit senses a fingerprint image of the finger corresponding to the first area of the panel. The display driving circuit drives pixels over the panel with respective first gray levels during a first phase, and drives pixels of the first area with respective second gray levels and pixels of a second area outside the first area with respective third gray levels during a second phase. The respective second gray levels are higher than the respective first gray levels, and the respective third gray levels are lower than the respective second gray levels.

公开(公告)号：US11036952B2

公开(公告)日：2021-06-15

申请号：US16677605

申请日：2019-11-07

Applicant: Novatek Microelectronics Corp.

Inventor： Ching-Ho Hung ,  Jiun-Jie Tsai ,  Ting-Hsuan Hung ,  Wei-Lun Shih

IPC: G06F3/041 ,  G06K9/00 ,  G06F3/05

Abstract: A touch apparatus and a touch detection integrated circuit (IC) thereof are provided. The touch detection IC includes a driving signal generation circuit and a receiving circuit. The driving signal generation circuit is configured to control a touch panel to perform touch sensing operation and control a fingerprint sensor to perform fingerprint sensing operation. The receiving circuit receives and processes a touch signal of the touch panel during a first period when the driving signal generation circuit transmits the first driving signal for controlling the touch panel to perform touch sensing operation. The receiving circuit receives and processes a fingerprint signal of the fingerprint sensor during a second period when the driving signal generation circuit transmits the second driving signal for controlling the fingerprint sensor to perform fingerprint sensing operation.

公开(公告)号：US20210073504A1

公开(公告)日：2021-03-11

申请号：US17005325

申请日：2020-08-28

Applicant: Novatek Microelectronics Corp.

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

IPC: G06K9/00 ,  G09G3/20 ,  G06F3/041

Abstract: A chip, an electronic device, a panel and an operation method thereof are provided. The chip can control the panel to perform fingerprint sensing. Fingerprint sensing pixels of the panel are divided into a plurality of fingerprint zones along a column direction. The chip includes a selecting circuit and a control circuit. The selecting circuit obtains information about a selected fingerprint zone among the fingerprint zones. The control circuit provides multiple control signals for controlling the panel to perform fingerprint sensing. The control signals include multiple start pulse signals. The start pulse signals collectively indicate the selected fingerprint zone. The number of the fingerprint zones is greater than the number of the start pulse signals.

公开(公告)号：US20210056281A1

公开(公告)日：2021-02-25

申请号：US16921921

申请日：2020-07-06

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Tzu-Wen Hsieh ,  Huan-Teng Cheng ,  Huang-Chin Tang ,  Yueh-Teng Mai ,  Shi-Hao Huang ,  Jung-Chung Lee

IPC: G06K9/00 ,  G09G5/10

Abstract: An electronic circuit for driving a panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a touch sensing circuit, a fingerprint sensing circuit and a display driving circuit. The touch sensing circuit senses a touch of a finger and determines a first area corresponding to the touch on the panel. The fingerprint sensing circuit senses a fingerprint image of the finger corresponding to the first area of the panel. The display driving circuit drives pixels over the panel with respective first gray levels during a first phase, and drives pixels of the first area with respective second gray levels and pixels of a second area outside the first area with respective third gray levels during a second phase. The respective second gray levels are higher than the respective first gray levels, and the respective third gray levels are lower than the respective second gray levels.

公开(公告)号：US20200327301A1

公开(公告)日：2020-10-15

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: G06K9/00

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.