Patents Assigned to Novatek Microelectronics Corp.
  • Patent number: 11823637
    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.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: November 21, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Yi-Tsung Lin, Yen-Tao Liao
  • Patent number: 11823602
    Abstract: A layout arrangement of a driver integrated circuit includes multiple output pads, a plurality of switching circuits, and multiple data channel circuits. The output pads include a first output pad and a second output pad and are configurable to be coupled to a plurality of data lines. The switching circuits include a first switching circuit. A first selection terminal of the first switching circuit is coupled to the first output pad via a first connecting wire. A second selection terminal of the first switching circuit is coupled to the second output pad via a second connecting wire. The data channel circuits include a first data channel circuit. An output terminal of the first data channel circuit is coupled to a common terminal of the first switching circuit via a third connecting wire. The third connecting wire is longer than the first connecting wire and the second connecting wire.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: November 21, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Hsiu-Hui Yang, Yu-Shao Liu
  • Patent number: 11810391
    Abstract: A method for an image processing circuit includes steps of: receiving a fingerprint image; performing a low-pass filtering on the fingerprint image to remove a moiré signal on the fingerprint image, to generate a filtered image; and performing a data binning on the filtered image to generate an output image.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: November 7, 2023
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Yu-Hsiang Huang, Jung-Chen Chung
  • Publication number: 20230350520
    Abstract: Provided is an electronic device including a touch panel, a communication unit, and a processing unit coupled to the touch control panel and the communication unit. The communication unit sends a detection signal and receives a response signal based on the detection signal. The processing unit determines an operation mode of the electronic device based on the response signal. The operation mode includes a first mode and a second mode. An input signal source of the electronic device of the first mode includes a finger. The input signal source of the second mode includes the finger and a stylus. When the response signal includes a pen-tip signal of the stylus and a pen-ring signal of the stylus, the processing unit determines whether to set the operation mode to the second mode according to the numerical relationship between the pen-tip signal and the pen-ring signal.
    Type: Application
    Filed: August 17, 2022
    Publication date: November 2, 2023
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chih Hsien Ou, ChengFeng Hsieh, Chin-Lin Lee, Che-Chia Hsu
  • Publication number: 20230353062
    Abstract: A multiple output voltage generator includes a voltage divider and first and second voltage converters. The voltage divider receives a power voltage and divides the power voltage to generate a first output voltage. The first and second voltage converters are coupled to the voltage divider in parallel. The first voltage converter and the second voltage converter converting the first output voltage to respectively generate a second output voltage and a third output voltage.
    Type: Application
    Filed: April 29, 2022
    Publication date: November 2, 2023
    Applicant: Novatek Microelectronics Corp.
    Inventor: Chun-Yu Hsieh
  • Patent number: 11803272
    Abstract: Provided is an electronic device including a touch panel, a communication unit, and a processing unit coupled to the touch control panel and the communication unit. The communication unit sends a detection signal and receives a response signal based on the detection signal. The processing unit determines an operation mode of the electronic device based on the response signal. The operation mode includes a first mode and a second mode. An input signal source of the electronic device of the first mode includes a finger. The input signal source of the second mode includes the finger and a stylus. When the response signal includes a pen-tip signal of the stylus and a pen-ring signal of the stylus, the processing unit determines whether to set the operation mode to the second mode according to the numerical relationship between the pen-tip signal and the pen-ring signal.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: October 31, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih Hsien Ou, ChengFeng Hsieh, Chin-Lin Lee, Che-Chia Hsu
  • Patent number: 11804195
    Abstract: The disclosure provides a display equipment, a brightness compensation device, and a brightness compensation method. The brightness compensation device includes a variable refresh rate (VRR) detection circuit and a control circuit. The VRR detection circuit and the control circuit receive a video stream from a video source device, and the video stream includes a VRR video frame. The VRR detection circuit detects a blanking period of the VRR video frame and generates a detection result. The control circuit outputs the frame data of the VRR video frame to the display device during the valid data period of the VRR video frame. The control circuit repeatedly outputs the frame data of the VRR video frame to the display device during the blanking period of the VRR video frame according to the detection result until the blanking period ends.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: October 31, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Po-Hsiang Huang, Chia-Hsing Hou, Yu-Lin Cheng, Chung-Wen Wu
  • Patent number: 11798876
    Abstract: A Chip on Film (COF) package and a display device including the same are provided. The COF package includes: a film substrate; a chip arranged within a chip region on the film substrate; outer leads; and inner leads. The outer leads are arranged on the same side of the chip region and arranged as at least two rows of outer leads. The inner leads are arranged on a first side and a second side of the chip and connected with the chip. The at least two rows of outer leads include a first row and a second row of outer leads, the first row of outer leads are between the second row of outer leads and the chip, and wirings between at least part of leads among the second row of outer leads and the inner leads on the second side of the chip adopt a closed-loop like connection mode.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: October 24, 2023
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventor: Ko Chien-Chen
  • Patent number: 11798314
    Abstract: Embodiments of the present disclosure provide a fingerprint identification method, apparatus, and an electronic product. The method comprises: acquiring a touch signal of a finger to be identified on a display component; determining a touch zone; determining a fingerprint identification bright zone and a fingerprint identification dark zone on the display component based on the touch zone, wherein the fingerprint identification dark zone is close to and at least partially surrounds the fingerprint identification bright zone; and performing a fingerprint identification of the finger to be identified based on a bright zone fingerprint detection signal corresponding to the fingerprint identification bright zone and a dark zone fingerprint detection signal corresponding to the fingerprint identification dark zone.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: October 24, 2023
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Min Huang, Chi-Ting Chen
  • Patent number: 11800046
    Abstract: A video transmission system is disclosed. The video transmission system comprises a multi-drop bus, a first source driving chip, a second source driving chip and a timing controller. The first source driving chip comprises a first source driving circuit and a first terminal circuit. The first terminal circuit is coupled to the multi-drop bus and the first source driving circuit for providing a first terminal resistor. The second source driving chip comprises a second source driving circuit and a second terminal circuit. The second terminal circuit is coupled to the multi-drop bus and the second source driving circuit for providing a second terminal resistor. The timing controller is coupled to the first source driving chip and the second source driving chip via the multi-drop bus.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: October 24, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jhih-Siou Cheng, Yi-Chuan Liu, Hung-Cheng Hsiao, Ying-Wen Chou
  • Patent number: 11798309
    Abstract: Provided are a fingerprint identification method for a panel, an electronic device and a control circuit. The method includes setting voltages on the data lines and sensing lines that may affect a fingerprint identification result to a predetermined DC voltage during a predetermined time period before a start of a fingerprint identification period that follows a display driving period. As such, when a display driving operation and a fingerprint identification operation are performed in a time-division manner, the influence of the display driving operation on the fingerprint identification operation can be eliminated, that is, the influence on the fingerprint identification result from the voltage on the data line and sensing line can be eliminated.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: October 24, 2023
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Wei-Lun Shih, Yuan-Heng Lu, Ting-Hsuan Hung, Jia-Lin Chen
  • Publication number: 20230335042
    Abstract: A driving device, an operation method thereof, and a display apparatus are disclosed. The driving device is configured to drive a display panel. The driving device divides an image frame period into a plurality of sub-frame periods. A target pixel circuit in the display panel corresponds to target pixel data comprising at least one bit. Each bit in the target pixel data corresponds to at least one corresponding sub-frame period among the sub-frame periods. Different bits in the target pixel data correspond to different sub-frame periods among the sub-frame periods. According to a current bit in the target pixel data, the driving device determines whether to light up the target pixel circuit during the at least one corresponding sub-frame period corresponding to the current bit.
    Type: Application
    Filed: April 19, 2022
    Publication date: October 19, 2023
    Applicant: Novatek Microelectronics Corp.
    Inventor: Yu-Tsung Lu
  • Patent number: 11790501
    Abstract: A training method for video stabilization and an image processing device using the same are proposed. The method includes the following steps. An input video including low dynamic range (LDR) images is received. The LDR images are converted to high dynamic range (HDR) images by using a first neural network. A feature extraction process is performed to obtain features based on the LDR images and the HDR images. A second neural network for video stabilization is trained according to the LDR images and the HDR images based on a loss function by minimizing a loss value of the loss function to generate stabilized HDR images in a time-dependent manner, where the loss value of the loss function depends upon the features. An HDR classifier is constructed according to the LDR images and the HDR images. The stabilized HDR images are classified by using the HDR classifier to generate a reward value, where the loss value of the loss function further depends upon the reward value.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: October 17, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jen-Huan Hu, Wei-Ting Chen, Yu-Che Hsiao, Shih-Hsiang Lin, Po-Chin Hu, Yu-Tsung Hu, Pei-Yin Chen
  • Patent number: 11790690
    Abstract: A fingerprint recognition device is provided. The fingerprint recognition device includes a fingerprint sensing circuit and an image processing circuit. The fingerprint sensing circuit is configured to perform a first fingerprint sensing operation to obtain a first fingerprint image. The image processing circuit is coupled to the fingerprint sensing circuit and configured to generate a de-moire fingerprint image according to a moire pattern image and the first fingerprint image and perform a fingerprint recognition process according to the de-moire fingerprint image.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: October 17, 2023
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Jung-Chen Chung, Shu-Fang Wang
  • Patent number: 11783795
    Abstract: A gate driver for a panel, wherein the gate driver comprises at least an output channel unit, each of the output channel unit includes a first driving unit; a second driving unit; a first current limit circuit, coupled to the first driving unit, configured to control an output current according to an output voltage of the gate driver to limit an output current slew rate of the gate driver; and a second current limit circuit, coupled to the second driving unit, configured to control the output current according to the output voltage of the gate driver to limit the output current slew rate of the gate driver.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: October 10, 2023
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Ying-Chieh Yen, Po-Chiang Hsu, Ching-Hao Lee, Cheng-Hsun Tsai
  • Publication number: 20230318578
    Abstract: A signal transmitter includes a plurality of driver slices. Each of the driver slices includes a driving circuit, a plurality of first transistors, and a plurality of second transistors. The driving circuit receives an input signal and outputting an output signal. The first transistors provide a first impedance according to signals on gate terminals of the first transistors. The second transistors provide a second impedance according to signals on gate terminals of the second transistors. Each of the gate terminals of the first transistors and the second transistors is selectively coupled to a bias voltage which controls the corresponding first transistor or second transistor to operate in a triode region, or coupled to a predetermined voltage which controls the corresponding first transistor or second transistor to behave as a switch.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 5, 2023
    Applicant: Novatek Microelectronics Corp.
    Inventors: Shu-Chin Chuang, Shih-Chun Lin, Ming-Hung Chien
  • Publication number: 20230316800
    Abstract: An imaging control circuit for collecting object image data for an object presented on a portion of a surface of a display panel is provided. The imaging control circuit includes a first circuit, a second circuit and a third circuit. The first circuit is adapted to receive touch sensing signals from a set of touch sensors located in the display panel. The second circuit is adapted to receive object image sensing signals from a set of imaging sensors. The object image sensing signals are associated with the object detected on the surface of the display panel. The third circuit is adapted to determine a location of the object from the touch sensing signals and generate a variable sized object imaging zone based on a location and a size of an object image. The variable sized object imaging zone includes a variable subset of the imaging sensors.
    Type: Application
    Filed: May 22, 2023
    Publication date: October 5, 2023
    Applicant: Novatek Microelectronics Corp.
    Inventors: Huan-Teng Cheng, Ting-Hsuan Hung, Wei-Lun Shih, Huang-Chin Tang
  • Patent number: 11777515
    Abstract: A column analog-to-digital converter and the local counting method is provided. The column analog-to-digital converter includes a plurality of analog-to-digital converters in parallel. Each of the analog-to-digital converters includes a comparator and a counting circuit. The comparator compares the ramp voltage with one of the plurality of column signals to generate a comparator output signal. The counting circuit generates a local clock by means of a voltage-controlled oscillator of the counting circuit according to the base clock and the comparator output signal, counts the base clock and the local clock respectively to generate a first counting output and a second counting output, and combines the first counting output with the second counting output to generate the counting output.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: October 3, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Peng Hsia, Cho-Hsuan Jhang, Su-Wei Lien
  • Patent number: 11776477
    Abstract: A pixel circuit of a display panel is provided, including a first, second, third, fourth, fifth switch, a first capacitor and a diode. The first switch is connected with a positive supplied power voltage. The second switch is connected with the first switch and a data line. The third switch is connected with the first and second switch, generating an emission current as a driving transistor. First end of the first capacitor is connected with the first, second and third switch. Second end of the first capacitor is connected with the third, fourth and fifth switch. The fifth switch is connected with a first initial voltage. Anode of the diode is connected with the third and fourth switch while its cathode is connected with a negative emission source voltage. By configuration of the disclosed pixel circuit, a power rail emission current is independent, without being involved with initial voltages.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: October 3, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventor: Sheng-Wen Hsiao
  • Patent number: RE49726
    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.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: November 14, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jen-Wei Li, Jen-Hao Liao