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51.发明公开公开(公告)号：US20230251739A1
公开(公告)日：2023-08-10
申请号：US18112642
申请日：2023-02-22
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Hung-Hsiang Chen , Chang-Hung Chen , Huang-Chin Tang
IPC: G06F3/041 , G09G3/3225
CPC classification number: G06F3/04166 , G09G3/3225 , G09G2310/08
Abstract: The disclosure provides a method for driving an OLED touch-and-display device, a driving circuit, and an OLED touch-and-display device. The method includes: dividing each display frame into at least one display period and at least one touch detection period which are alternated; during each display period, generating sequentially-shifted gate driving signals and sequentially-shifted light-emission control signals, and sequentially applying the sequentially-shifted gate driving signals to at least a part of gate driving lines, and sequentially applying the sequentially-shifted light-emission control signals to at least a part of light-emission control lines; during each touch detection period, suspending generation of sequentially-shifted gate driving signals without suspending generation of sequentially-shifted light-emission control signals; and during a period when a gate driving signal for each row of pixels is of active level, maintaining a light-emission control signal for the row of pixels at inactive level.
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公开(公告)号：US20220171494A1
公开(公告)日：2022-06-02
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
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.
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53.发明申请公开(公告)号：US20220130166A1
公开(公告)日：2022-04-28
申请号：US17567907
申请日：2022-01-04
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
Abstract: An electronic circuit adapted to drive a display panel is provided. The display panel includes touch sensors and fingerprint sensors. 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 display panel. The fingerprint sensing circuit senses a fingerprint image of the finger corresponding to the first area. The display driving circuit drives pixels of the first area with respective first gray levels and pixels of a second area outside the first area with respective second gray levels. The display driving circuit processes respective third gray levels to obtain the respective second gray levels. The display driving circuit generates gamma voltages corresponding to the respective first gray levels and the respective second gray levels according to the same gamma curve.
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54.发明申请公开(公告)号：US20220108557A1
公开(公告)日：2022-04-07
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
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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55.发明授权公开(公告)号：US11244135B2
公开(公告)日：2022-02-08
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
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.
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Patent Agency Ranking
公开(公告)号：US11145257B2
公开(公告)日：2021-10-12
申请号：US16779662
申请日：2020-02-02
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chieh-Hsiang Chang , Shih-Hsiang Pan , Chi-Hung Lin , Wen-Pin Tsai , Huang-Chin Tang
IPC: G09G3/3291 , G09G3/3233
Abstract: A display device driving method, suitable for a driver circuit, includes the following steps: determining magnitude of a plurality of data voltages according to received display data, and the plurality of data voltages are configured to be transmitted to a plurality of pixel circuits via a plurality of data lines; comparing the magnitude of the plurality of data voltages to generate a comparison result; and before providing corresponding ones of the plurality of data voltages to a first pixel group arranged at an i-th row of the plurality of pixel circuits, providing a first reset voltage having a value determined according to the comparison result to the plurality of data lines, or providing a second reset voltage to m data lines selected according to the comparison result from the plurality of data lines, i is a positive integer, and m is an integer.
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公开(公告)号：US10990219B2
公开(公告)日：2021-04-27
申请号：US16451021
申请日：2019-06-25
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Wen-Yi Hsieh , Huang-Chin Tang
Abstract: An integrated circuit and a touch display apparatus are provided. The integrated circuit is configured to drive a touch display panel. The integrated circuit includes a regulator. An output terminal of the regulator is employed as a first node to output a common voltage, wherein the common voltage is configured to be provided to at least one common electrode of the touch display panel. An input terminal of the regulator is coupled to a second node different from the first node to receive a feedback voltage.
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公开(公告)号：US20210056333A1
公开(公告)日：2021-02-25
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: G06K9/00 , G06F3/041 , G06F3/0481 , G06F3/0488
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.
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59.发明申请公开(公告)号：US20210034189A1
公开(公告)日：2021-02-04
申请号：US16944157
申请日：2020-07-31
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Wei-Lun Shih , Huang-Chin Tang
Abstract: An electronic circuit is adapted to drive a display panel having touch sensors and fingerprint sensors. The electronic circuit includes a first circuit, a second circuit, a first switch circuit and a control circuit. The first circuit processes touch sensing signals from the touch sensors. The second circuit processes fingerprint sensing signals corresponding to a fingerprint from the fingerprint sensors. The first switch circuit includes a plurality of first terminals coupled to the first circuit and the second circuit and a plurality of second terminals configurable to be coupled to the display panel. The first switch circuit couples a part of the first terminals to the second terminals in a first time interval and couples the other part of the first terminals to the second terminals in a second time interval. The touch sensing signals and the fingerprint sensing signals are inputted to the electronic circuit through the second terminals.
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公开(公告)号：US20200342801A1
公开(公告)日：2020-10-29
申请号：US16395247
申请日：2019-04-26
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yen-Tao Liao , Hung-Hsiang Chen , Jen-Ta Yang , Yi-Wei Lin , Huang-Chin Tang
IPC: G09G3/20
Abstract: The present invention discloses a driving method for a source driver, for driving a source line of a display panel. The driving method includes the steps of: driving the source line with a first voltage or a second voltage smaller than the first voltage in a first driving cycle; driving the source line with the first voltage in a second driving cycle next to the first driving cycle when the source line is driven with the first voltage in the first driving cycle; and driving the source line with an overdrive voltage in the second driving cycle when the source line is driven with the second voltage in the first driving cycle. The first voltage is a normal high voltage of the display panel, and the overdrive voltage is greater than the normal high voltage.
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