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1.发明公开公开(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
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.
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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
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.
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公开(公告)号：US11232282B2
公开(公告)日：2022-01-25
申请号：US16999019
申请日：2020-08-20
Applicant: NOVATEK Microelectronics Corp.
Inventor： Huan-Teng Cheng
IPC: G06K9/00 , G06F1/3234 , G06F1/3231 , G06F1/3206
Abstract: A control circuit, coupled to a system processor and a display panel, includes a touch control circuit, a display control circuit and a fingerprint control circuit. The touch control circuit is configured to detect a finger touch on the display panel. The display control circuit is configured to control the display panel to display at least one light spot which indicates a position of the finger touch. The fingerprint control circuit is configured to perform fingerprint sensing through at least one fingerprint sensor corresponding to the position of the finger touch, and send fingerprint image data to the system processor, wherein the fingerprint image data corresponds to sensing signals received from the at least one fingerprint sensor. Wherein, each of the above steps is performed by the control circuit by keeping a display part of the system processor in a sleep status.
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公开(公告)号：US20210056280A1
公开(公告)日：2021-02-25
申请号：US16865404
申请日：2020-05-03
Applicant: NOVATEK Microelectronics Corp.
Inventor： Huan-Teng Cheng , Wei-Lun Shih , Huang-Chin Tang
IPC: G06K9/00 , G06F3/0481 , G09G5/10 , G06F3/0488 , G06F3/041 , G06K9/20
Abstract: A control circuit configured to control a display panel under normal display includes a display driver circuit, a touch sensing circuit and a fingerprint sensing circuit. The touch sensing circuit, coupled to the display driver circuit, is configured to detect a predetermined touch gesture on the display panel and determine a position of the display panel on which the predetermined touch gesture is detected. The fingerprint sensing circuit, coupled to the touch sensing circuit, is configured to perform fingerprint sensing on at least one zone corresponding to the position when the predetermined touch gesture is detected, in order to perform a specific function.
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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
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.
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Patent Agency Ranking
公开(公告)号：US20200293143A1
公开(公告)日：2020-09-17
申请号：US16352844
申请日：2019-03-14
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Huang-Chin Tang
Abstract: A timing control circuit and an operation method thereof are provided. The timing control circuit includes a receiving circuit, a line memory, and a timing generating circuit. The receiving circuit receives a video packet stream from the outside and provides an external horizontal sync signal and a first data signal. The line memory temporarily stores the first data signal, and outputs a second data signal to a source driver according to an internal horizontal sync signal generated by the timing generating circuit. A video frame period of the second data signal includes a video display operation period and a touch detection period. A video display operation period is divided into a plurality of sub-periods. The timing generating circuit performs a synchronization operation in each of the sub-periods, so as to synchronize the timing of the internal horizontal sync signal with the timing of the external horizontal sync signal.
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7.发明公开公开(公告)号：US20240355296A1
公开(公告)日：2024-10-24
申请号：US18629944
申请日：2024-04-09
Applicant: NOVATEK Microelectronics Corp.
Inventor： Huan-Teng Cheng
IPC: G09G3/3266
CPC classification number: G09G3/3266 , G09G2310/0286 , G09G2310/08 , G09G2330/021 , G09G2340/0435
Abstract: A method of controlling a display panel which performs a scan operation on an image frame with a first scan setting and a second scan setting includes steps of: outputting a start pulse to the display panel when starting the scan operation; outputting a clock signal to the display panel when the scan operation is in the first scan setting; stopping outputting the clock signal to the display panel when the scan operation is in the second scan setting; and restarting to output the clock signal to the display panel when the scan operation is switched to the first scan setting from the second scan setting. The first scan setting and the second scan setting are for display of the display panel.
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公开(公告)号：US20240355261A1
公开(公告)日：2024-10-24
申请号：US18465988
申请日：2023-09-13
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng
IPC: G09G3/20
CPC classification number: G09G3/2096 , G09G2310/06 , G09G2310/08 , G09G2340/0435 , G09G2370/00
Abstract: A display driver circuit including a gate signal control circuit is provided. The gate signal control circuit is configured to output a clock signal to drive a display panel to operate in a first mode or a second mode. The display panel includes a first area and a second area. In the second mode, a pulse width of the clock signal driving the first area of the display panel is smaller than a pulse width of the clock signal driving the second area of the display panel.
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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
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.
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10.发明授权公开(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
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.
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