公开(公告)号：US20240161672A1

公开(公告)日：2024-05-16

申请号：US18421930

申请日：2024-01-24

Applicant: Novatek Microelectronics Corp.

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

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

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

Abstract: An electronic circuit including a plurality of common terminals, a first circuit, a second circuit, and a plurality of switch units is provided. The first circuit is configured to output display driving signals to data lines of a display panel via the common terminals. The second circuit is configured to receive fingerprint sensing signals from fingerprint sensing lines of the display panel via the common terminals. Each of the switch units includes a first terminal coupled to one of the common terminals and a plurality of second terminals coupled to the first circuit and the second circuit. The switch units are grouped into a plurality of groups, and each group corresponds to a fingerprint sensing channel of the second circuit.

公开(公告)号：US11935452B2

公开(公告)日：2024-03-19

申请号：US18170541

申请日：2023-02-17

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

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

Abstract: An electronic circuit for operating with a display panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a first circuit, a second circuit, a third 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 third circuit determines a touch information according to touch sensing signals from the touch sensors. The first switch circuit includes a plurality of first switch units, each of the first switch units includes a first switch element and a second switch element. The control circuit controls the first switch circuit to transmit the display driving signals in a first time interval, controls the first switch circuit to transmit the fingerprint sensing signals in a second time interval, and controls the third circuit to receive the fingerprint sensing signals in a third time interval.

公开(公告)号：US20210034833A1

公开(公告)日：2021-02-04

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: G06K9/00 ,  G09G3/20 ,  G06F3/041

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.