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公开(公告)号：US11862091B1
公开(公告)日：2024-01-02
申请号：US18094407
申请日：2023-01-09
Applicant: NOVATEK Microelectronics Corp.
Inventor： Kuo-Wei Cheng
IPC: G09G3/3233
CPC classification number: G09G3/3233 , G09G2300/0852 , G09G2310/0251 , G09G2320/0233
Abstract: A pixel circuit of a display panel includes a driving transistor, first to fifth transistors, and a light emitting device. The driving transistor includes a first terminal, a second terminal and a gate terminal. The first transistor is coupled between a power supply terminal and the first terminal of the driving transistor. The second transistor is coupled between the first terminal of the driving transistor and the gate terminal of the driving transistor. The third transistor is coupled between the second terminal of the driving transistor and the gate terminal of the driving transistor. The fourth transistor is coupled between a data input terminal and the second terminal of the driving transistor. The fifth transistor is coupled to the second terminal of the driving transistor. The light emitting device is coupled between the fifth transistor and a reference voltage terminal.
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公开(公告)号：US11862065B2
公开(公告)日：2024-01-02
申请号：US17692190
申请日：2022-03-11
Applicant: Novatek Microelectronics Corp.
Inventor： Grace Li , Jen-Ta Yang , Yen-Tao Liao , Yu-Hung Su
IPC: G09G3/20
CPC classification number: G09G3/2096 , G09G2310/08 , G09G2340/0435
Abstract: A timing control device for the display panel includes a control circuit. The control circuit is configured to generate a plurality of gate scanning control signals and a data transmission control signal. In response to that a display refresh rate changes from a first frequency to a second frequency, the control circuit adjusts the plurality of gate scanning control signals to generate a plurality of adjusted gate scanning control signals, or adjusts the data transmission control signal to generate an adjusted data transmission control signal, for driving a display panel under the second frequency as the display refresh rate.
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公开(公告)号：US11854476B1
公开(公告)日：2023-12-26
申请号：US17841696
申请日：2022-06-16
Applicant: Novatek Microelectronics Corp.
Inventor： Yao-Min Chou , Kai-Wen Shao
IPC: G09G3/3208 , G06T1/20
CPC classification number: G09G3/3208 , G06T1/20 , G09G2310/08 , G09G2360/02 , G09G2360/18
Abstract: The disclosure is directed to a timing controller having a mechanism for frame synchronization, a display panel having the timing controller thereof, and a display system having the timing controller thereof. According to an aspect of the disclosure, the disclosure provides an integrated circuit which includes a timing controller to transmit a first TE signal to an application processor and receive a first image frame from the application processor after the application processor receives the first TE signal, and a control circuit to generate a first sync signal when the timing controller receives the first image frame, wherein when the application processor receives a second TE signal and the application processor is not ready to transmit a second image frame to the timing controller, the control circuit delays a first waiting period to generate a second sync signal.
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公开(公告)号：US11830280B1
公开(公告)日：2023-11-28
申请号：US17869773
申请日：2022-07-20
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen , Jung-Yu Tsai
CPC classification number: G06V40/1318 , G06F3/0418 , G06F3/04166
Abstract: An image processing circuit for controlling a panel is configured to: receive information of a fixed pattern noise (FPN) corresponding to a first sensing zone of the panel, wherein the first sensing zone is determined according to a touch position of a finger; scan the first sensing zone to perform fingerprint sensing on the finger, to receive a plurality of raw sensing signals; remove the FPN from the plurality of raw sensing signals to generate a plurality of modified sensing signals; and output a plurality of fingerprint data to a host for fingerprint recognition, wherein the plurality of fingerprint data are converted from the plurality of modified sensing signals.
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公开(公告)号：US11823637B2
公开(公告)日：2023-11-21
申请号：US17564253
申请日：2021-12-29
Applicant: Novatek Microelectronics Corp.
Inventor： Yi-Tsung Lin , Yen-Tao Liao
IPC: G09G3/36
CPC classification number: G09G3/3614 , G09G3/3688 , G09G2310/08
Abstract: A timing control circuit is provided to control a data voltage outputted to a pixel array of a display panel during a frame period to perform a polarity reversal every N scan lines, where N is a positive integer. The timing control circuit includes a receiver and an adjustment circuit. The receiver is configured to sequentially receive first display data and second display data for one data line of the display panel. The adjustment circuit is coupled to the receiver to adjust at least one of gray information of the second display data and charging time of the second display data according to a voltage polarity of the first display data and a voltage polarity of the second display data. A corresponding operation method of the timing control circuit is also provided.
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Patent Agency Ranking
公开(公告)号：US11822745B2
公开(公告)日：2023-11-21
申请号：US17891628
申请日：2022-08-19
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Hao-Wei Cheng , Cheng-Wei Pan
IPC: G06F3/041 , G06F3/044 , G06F3/0354
CPC classification number: G06F3/0418 , G06F3/03545 , G06F3/0441 , G06F3/0442 , G06F3/04166
Abstract: Provided are a driving method of a touch display panel, a driving circuit and a touch display device. The driving method includes: obtaining a touch position of an active stylus; determining a first region on the touch display panel based on the touch position of the active stylus; and transmitting an uplink (UL) signal to touch sensing electrodes in the first region and transmitting an anti-interference signal to the touch sensing electrodes in at least a part of the region except for the first region on the touch display panel during an UL transmission period, wherein the UL signal transmitted to the touch sensing electrodes in the first region during the UL transmission period is for transmission to the active stylus.
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公开(公告)号：USRE49726E1
公开(公告)日：2023-11-14
申请号：US17546063
申请日：2021-12-09
Applicant: Novatek Microelectronics Corp.
Inventor： Jen-Wei Li , Jen-Hao Liao
CPC classification number: G09G3/20 , G09G3/3685 , G09G2310/027 , G09G2310/0243 , G09G2310/0291 , G09G2310/0297 , G09G2320/0276 , G09G2320/0673 , G09G2330/028
Abstract: A display driver that includes a first driver integrated circuit being cascaded to a second driver integrated circuit is introduced. The first driver integrated circuit includes a first gamma voltage generator that is configured to output a plurality of first gamma voltages to output terminals of the first gamma voltage generator. The second driver integrated circuit includes a second gamma voltage generator that is configured to output a plurality of second gamma voltages to output terminals of the second gamma voltage generator. Each of the output terminals of the first gamma voltage generator is corresponded to one of the output terminals of the second gamma voltage generator. At least one of the output terminals of the first gamma voltage generator is electrically coupled to the corresponding one of the output terminals of the second gamma voltage generator to output at least one common gamma voltage of the first gamma voltages and the second gamma voltages. A method adapted to the display driver is also introduced.
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公开(公告)号：US11749168B1
公开(公告)日：2023-09-05
申请号：US17857154
申请日：2022-07-04
Applicant: Novatek Microelectronics Corp.
Inventor： Ho-Chun Chang , Che-Wei Yeh , Yu-Hsiang Wang , Keko-Chun Liang
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G2300/0838 , G09G2310/0289
Abstract: The disclosure provides a data receiver, including a first capacitor, a second capacitor, a first inverter and a second inverter. The first capacitor has a first terminal and a second terminal, and the first terminal receives a first input signal. The second capacitor has a third terminal and a fourth terminal, and the third terminal receives a second input signal. The first inverter has a first input terminal and a first output terminal. The second inverter has a second input terminal and a second output terminal. The first input terminal and the second output terminal are coupled to the second terminal of the first capacitor, and the second input terminal and the first output terminal are coupled to the fourth terminal of the second capacitor. The first output terminal generates a first output signal with a first output voltage, and the second output terminal generates a second output signal with a second output voltage.
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公开(公告)号：US11749014B2
公开(公告)日：2023-09-05
申请号：US17394329
申请日：2021-08-04
Applicant: Novatek Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen
CPC classification number: G06V40/1318 , G06F3/0412 , G06F3/0421
Abstract: An optical fingerprint sensing apparatus, a driver apparatus, and an operation method are provided. The driver apparatus includes a display driving device and a fingerprint sensing driving device. The display driving device drives the display panel to display different frames with different luminances, and the different frames are used to generate at least one of different transmitted light intensities and different reflected light intensities. The fingerprint sensing driving device drives the display panel to perform a fingerprint capturing operation to capture a plurality of different fingerprint images of a finger under the at least one of the different transmitted light intensities and the different reflected light intensities. The different fingerprint images are processed to generate a processed fingerprint image.
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公开(公告)号：US11749012B2
公开(公告)日：2023-09-05
申请号：US17886428
申请日：2022-08-11
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu-Wei Lin , Huang-Chin Tang , Ting-Hsuan Hung
CPC classification number: G06V40/1306 , G06F3/0412 , G09G3/20 , G06F3/04166 , G09G2300/0408 , G09G2354/00
Abstract: A chip capable of controlling a panel to perform fingerprint sensing is provided. Fingerprint sensing pixels of the panel are divided into a plurality of fingerprint zones along a first direction. The chip includes a control circuit. 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 are used to indicate the selected fingerprint zone. The number of the fingerprint zones is greater than the number of the start pulse signals.
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