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公开(公告)号：US12287934B2
公开(公告)日：2025-04-29
申请号：US18357275
申请日：2023-07-24
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Yen-Cheng Cheng
IPC: G06F3/041
Abstract: A touch and display driving circuit applicable to driving at least one sensing pad of a touch and display panel and its operation method thereof are provided. The touch and display driving circuit includes a source driver circuit and a touch circuit having an analog front-end circuit, being electrically coupled to the sensing pad of the touch and display panel. The source driver circuit is operable and connected with a first operational voltage and a second operational voltage. The analog front-end circuit is operable and connected with a third operational voltage and a fourth operational voltage. The first operational voltage and the second operational voltage of the source driver circuit are different from the third operational voltage and the fourth operational voltage of the analog front-end circuit. By employing the disclosed technical contents, the invention is effective in reducing power consumption and redundant power waste.
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公开(公告)号：US12283236B2
公开(公告)日：2025-04-22
申请号：US18311902
申请日：2023-05-04
Applicant: NOVATEK Microelectronics Corp.
Inventor： Ching-Hua Liu , Yen-Tao Liao
IPC: G09G3/3208 , G06F3/14 , G06T5/70
Abstract: A processor is disposed in a display device and is configured to perform following operations: calculating a total coupling coefficient for a (N−1)th frame according to input data, in which N is a positive integer greater than 1; calculating a coupling coefficient difference value of two adjacent lines for a Nth frame according to the input data; generating a first compensation value for a target sub-pixel according to the coupling coefficient difference value and target input data of the target sub-pixel; generating a second compensation value for the target sub-pixel according to the first compensation value and the total coupling coefficient; generating an output data for the target sub-pixel according to the target input data and the second compensation value; and controlling a display panel in the display device to display a final image according to the output data.
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公开(公告)号：US12272283B2
公开(公告)日：2025-04-08
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
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：US20250106961A1
公开(公告)日：2025-03-27
申请号：US18371453
申请日：2023-09-22
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jhih-Siou Cheng , Keko-Chun Liang , Chun-Fu Lin , Jin-Yi Lin , Chieh-An Lin , Po-Hsiang Fang
IPC: H05B45/14 , H05B45/325
Abstract: According to an embodiment of the invention, a backlight driver of driving a light-emitting diode (LED) string via a driving transistor in a load path is provided. The LED string, the driving transistor, and an electrical load are coupled to form the load path. The backlight driver includes a current regulator and a headroom detection circuit. The current regulator is coupled to the driving transistor and the first terminal of the electrical load to control a driving current flowing through the load path according to at least a feedback voltage from a first terminal of the electrical load. The headroom detection circuit is coupled to the first terminal of the electrical load and a voltage regulator to control the voltage regulator to regulate a supply voltage to a first terminal of the LED string according to at least the feedback voltage.
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公开(公告)号：US20250097373A1
公开(公告)日：2025-03-20
申请号：US18963540
申请日：2024-11-28
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chun-Tang Yang , Jin-Ho Lin , Yung-Yang Huang , Che-Chang Yang
Abstract: A screen control system includes a source controller, a plurality of serial units and a plurality of forward channels. The plurality of serial units are coupled in series, coupled to the source controller, and configured to control a display screen. Each of the plurality of forward channels is coupled between two of the plurality of serial units or between one of the plurality of serial units and the source controller, configured to forward a video data and a command to the plurality of serial units from the source controller. The plurality of forward channels couple the source controller with the plurality of serial units to form a closed loop.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20250095539A1
公开(公告)日：2025-03-20
申请号：US18664309
申请日：2024-05-15
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Ju Hou , Chang-Sheng Tseng , Chia-Wei Chang
IPC: G09G3/20
Abstract: An adaptive multi-area frame rate display system and a method employed are provided. The method includes: dividing a display panel into a plurality of display areas and setting a plurality of compensation parameter sets corresponding to a plurality of frame rates; receiving display stream data; controlling the plurality of display areas of the display panel to display an image corresponding to the display stream data; performing a multi-area frame rate calculation operation to obtain a frame rate of each of the plurality of display areas; and, for each of the display areas, applying the compensation parameter set to which the frame rate of each of the display areas corresponds, so as to compensate an image subsequently displayed in each of the display areas.
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公开(公告)号：US12254812B2
公开(公告)日：2025-03-18
申请号：US18357166
申请日：2023-07-24
Applicant: Novatek Microelectronics Corp.
Inventor： Tso-Hua Chien , Po-Sheng Liao
IPC: G09G3/20
Abstract: A display apparatus and a control device and a control method thereof are provided. A controller of the control device controls a gate driver of a display panel. The controller selects a first selected frame and a second selected frame in each frame group, wherein an adjacent position between a first partition and a second partition of the display panel corresponds to a corresponding time point in each frame of the first selected frame and the second selected frame. The controller transmits a reset pulse to the first gate driver at the corresponding time point in the second selected frame to clear a scanning pulse in the gate driver, and cancels the reset pulse at the corresponding time point in the first selected frame. Thus, the control device enables different display partitions of the display panel to have different frame rates or refresh rates.
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公开(公告)号：US12250487B2
公开(公告)日：2025-03-11
申请号：US18315579
申请日：2023-05-11
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Pai-Hsiang Hsu , Chao-Yu Meng , Yueh-Ru Lee
Abstract: An image readout device includes comparator circuits. Each comparator circuit includes an amplifier, an input capacitor, an auto-zero switch, and a control capacitor. The amplifier compares a pixel signal to a reference signal to generate a comparison signal. The input capacitor receives the pixel signal or the reference signal. The auto-zero switch couples or decouples the input node and the output node of the amplifier. The control capacitor receives a respective control signal. Alternatively, the control capacitor can be replaced with a control switch. The control switch is coupled to the auto-zero switch in parallel. The control switch and the control capacitor can be omitted. Instead, the voltage level of the reference signal is adjusted to change the transition time points of the comparison signal.
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公开(公告)号：US20250077026A1
公开(公告)日：2025-03-06
申请号：US18460698
申请日：2023-09-05
Applicant: Novatek Microelectronics Corp.
Inventor： Kai-Chun Huang
Abstract: A driver circuit configured to drive a display panel to perform a display function and a touch function is provided. The driver circuit includes a plurality of pads and a switch circuit. The plurality of pads are coupled to the display panel and grouped into several pad groups. A synchronization driving signal is applied to the pad groups in a touch sensing phase, and the synchronization driving signal has a first level. The switch circuit is coupled to the pads. The switch circuit is configured to receive a common signal and a system voltage signal, and output the common signal and the system voltage signal to the pad groups in a time division manner. The common signal has a second level, and the system voltage signal has a third level. Voltage levels of the pad groups are changed from the second level to the first level in different times, and the second level is smaller than the first level.
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公开(公告)号：US12223138B1
公开(公告)日：2025-02-11
申请号：US18225156
申请日：2023-07-23
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chung-Yu Hsu
Abstract: A driving system includes a plurality of driver circuits each having a first terminal and a second terminal. The first terminal of each of the driver circuits is commonly coupled to a first transmission bus, and the second terminal of each of the driver circuits is commonly coupled to a second transmission bus. The driver circuits include a first driver circuit and a second driver circuit. The first driver circuit outputs a first synchronization signal to the first transmission bus through the first terminal. The second driver circuit outputs a second synchronization signal to the second transmission bus through the second terminal at the time when receiving the first synchronization signal from the first transmission bus. Wherein, a compensation time corresponding to the second driver circuit is calculated according to an output time point of the first synchronization signal and a reception time point of the second synchronization signal.
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