-
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.
-
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.
-
3.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.
-
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.
-
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.
-
Patent Agency Ranking
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.
-
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.
-
公开(公告)号：US20250028409A1
公开(公告)日：2025-01-23
申请号：US18822422
申请日：2024-09-02
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 is commonly coupled to a first transmission bus, and the second terminal is commonly coupled to a second transmission bus. The driver circuits include a first driver circuit and at least one second driver circuit. Each second driver circuit generates a notification. The first driver circuit receives the notification from each second driver circuit, outputs a confirmation signal through the first terminal after receiving the notification, and starts a preset operation for sensing with a delay of a compensation time for the first driver circuit after outputting the confirmation signal. The second driver circuit further receives the confirmation signal through the first terminal, and starts the preset operation for sensing with a delay of a compensation time for the respective second driver circuit after receiving the confirmation signal.
-
公开(公告)号：US12198583B1
公开(公告)日：2025-01-14
申请号：US18349973
申请日：2023-07-11
Applicant: NOVATEK Microelectronics Corp.
Inventor： Ching-Wu Tseng , Wei-Lun Shih
IPC: G09G3/00 , G09G3/3233
Abstract: A driver circuit is coupled to a control circuit which is configured to control a plurality of pixels. The driver circuit includes a detector circuit and an outputting circuit. The detector circuit is configured to detect whether an error occurs or not. The outputting circuit is configured to output an enable signal to the control circuit. When the error occurs, the enable signal changes from a first level to a second level such that the control circuit stops outputting a plurality of control signals to the plurality of pixels.
-
公开(公告)号：US20250014507A1
公开(公告)日：2025-01-09
申请号：US18642813
申请日：2024-04-22
Applicant: Novatek Microelectronics Corp.
Inventor： Wen-Lung Hung , Yu-Yi Chien , Po-Yuan Hsieh
Abstract: A display apparatus includes a display screen and a driver circuit. The display screen includes a plurality of light boxes. Each of the light boxes includes a plurality of light panels. Each of the light panels includes a plurality of display pixels. The driver circuit is coupled to the display screen. The driver circuit is configured to drives the display screen to display an image. The driver circuit performs a first compensation operation on the display screen according to a first compensation data, and the first compensation data is calculated on the basis of the light panels. The driver circuit performs a second compensation operation on the display screen according to a second compensation data, and the second compensation data is calculated on the basis of the display pixels.
-
-
-
-
-
-
-
-
-
Search Results
2024
records
(took 0.025 seconds)
