Patents Assigned to Novatek Microelectronics Corp.
  • Patent number: 10673421
    Abstract: A level shifter device and an operation method thereof are provided. The level shifter device includes a buffer, a first level shifter and a dynamic voltage regulation circuit. The buffer includes an output terminal. The first level shifter has a first input terminal coupled to the output terminal of the buffer. The first level shifter has a reference voltage terminal coupled to an analog reference voltage. The dynamic voltage regulation circuit generates a dynamic voltage having a level varied according to a bounce of the analog reference voltage, and provides the dynamic voltage to at least one of the buffer as a power supply and the first level shifter as a bias voltage.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: June 2, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventor: Yen-Cheng Cheng
  • Patent number: 10673397
    Abstract: An operational amplifier includes an output node; an output stage, comprising a plurality of output current paths and a plurality of control nodes, wherein the plurality of control nodes are respectively coupled to the plurality of output current paths, and the plurality of output current paths are coupled to the output node and respectively coupled to a plurality of power supply sources providing different voltages; and a selecting unit, configured to couple an internal output node of the operational amplifier to one of the plurality of control nodes of the output stage.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: June 2, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Jhih-Siou Cheng, Tzong-Honge Shieh
  • Patent number: 10673391
    Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: June 2, 2020
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
  • Publication number: 20200167903
    Abstract: An image processing apparatus and method for a high dynamic range effect are provided. The image processing apparatus includes a conversion circuit, a specular detection circuit, and a blending circuit. The conversion circuit converts first pixel data of the current pixel of a current frame to a second pixel data, wherein a luminance of the second pixel data is lower than a luminance of the first pixel data. The specular detection circuit detects a specular degree of the current frame to produce a specular map, wherein the specular map includes a specular degree value of a current pixel. The blending circuit blends the first pixel data and the second pixel data according to the specular degree value of the current pixel to obtain blended pixel data of the current pixel.
    Type: Application
    Filed: May 30, 2019
    Publication date: May 28, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Shuyao Wang, Yongchao Li, YuanJia Du
  • Patent number: 10665177
    Abstract: A circuit arrangement for controlling a backlight source and an operation method are provided. The circuit arrangement includes a generator. The generator receives a sync signal and generates a pulse width modulation signal synchronous with the sync signal to control the backlight source. The sync signal indicates a frequency of a video including a series of image frames. The sync signal includes a sync period corresponding to a frame of the video. The pulse width modulation signal includes a first waveform pattern in a first sub-period of the sync period and a second waveform pattern in a second sub-period of the sync period. Each of the first waveform pattern and the second waveform pattern includes at least one active pulse. The first waveform pattern is substantially identical to the second waveform pattern.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: May 26, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chung-Wen Wu, Wen-Chi Lin, Jiun-Yi Lin
  • Patent number: 10656768
    Abstract: A touch display panel and a manufacturing method thereof are provided. The touch display panel includes a substrate, a conductor, a first pressure sensing electrode and a second pressure sensing electrode. The conductor is stacked under the substrate, and the conductor is not connected to a bias. The first pressure sensing electrode is disposed on the substrate and disposed above the conductor. A compression zone exists between the first pressure sensing electrode and the conductor, so as to form a first pressure sensing capacitor. The second pressure sensing electrode is disposed on the substrate and disposed above the conductor. The compression zone exists between the second pressure sensing electrode and the conductor, so as to form a second pressure sensing capacitor connected in series with the first pressure sensing capacitor.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: May 19, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: He-Wei Huang, Chih-Jen Cheng
  • Patent number: 10656751
    Abstract: The driving apparatus for driving a touch display panel includes a first voltage generating circuit configured to generate a common reference voltage, a second voltage generating circuit configured to generate a touch driving signal, and a control circuit configured to generate a switching signal. The switching signal is at the first voltage level during display periods for providing the common reference voltage to the touch display panel. The switching signal is at the second voltage level during touch periods for providing the touch driving signal to the touch display panel. A first touch display period includes a first display period a first touch period adjacent to the first display period. A second touch display period includes a second display period and a second touch period adjacent to the second display period. The first touch display period and the second touch display period are different in time length.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: May 19, 2020
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Feng-Lin Chan, Hung-Kai Chen, Yuan-Fu Hsueh, Chun-Yuan Pai
  • Publication number: 20200152104
    Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
    Type: Application
    Filed: January 16, 2020
    Publication date: May 14, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
  • Publication number: 20200151483
    Abstract: An embodiment of the invention provides an optical device including a first substrate, a light source, a second substrate, an image capturing device, a lens module and a lens holder. The light source outputs a first light beam. The second substrate includes a first surface and a second surface opposite to the first surface and closer to the first substrate. A scattered light beam which is generated by the first light beam entering an object touching the first surface of the second substrate and scattered in the object is a second light beam. The image capturing device receives a third light beam. The third light beam is the second light beam normally incident to the second surface and transmitted to the image capturing device. The lens module focuses the third light beam to be captured by the image capturing device.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Li-Yuan Chang, I-Hsiu Chen, Chin-Hui Huang
  • Publication number: 20200150404
    Abstract: An optical device including a first substrate, a light source, a second substrate, an image capturing device, a lens module and a lens holder is provided. The light source outputs a first light beam. The second substrate includes a first surface and a second surface opposite to the first surface and closer to the first substrate. A scattered light beam which is generated by the first light beam entering an object touching the first surface of the second substrate and scattered in the object is a second light beam. The image capturing device receives a third light beam. The third light beam is the second light beam normally incident to the second surface and transmitted to the image capturing device. The lens module focuses the third light beam to be captured by the image capturing device. The lens holder is located between the light source and the image capturing device.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Li-Yuan Chang, I-Hsiu Chen, Chin-Hui Huang
  • Patent number: 10643543
    Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals, the sensing channels are coupled to the sensing lines in an arrangement selected from one of a random arrangement and a normal arrangement. The driver further includes a signal convertor coupled to the sensing channels and configured to receive the sensing signals from the sensing channels in a sequence selected from one of a random sequence and a normal sequence.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: May 5, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jhih-Siou Cheng, Tzong-Honge Shieh, Ju-Lin Huang
  • Patent number: 10644695
    Abstract: A source driver is proposed. The source driver includes N output buffers, (N?1) switches, a first auxiliary switch, a second auxiliary switch, and a third auxiliary switch. The (N?1) switches are respectively coupled between N output terminals of the N output buffers. The first auxiliary switch is coupled between a first output terminal among the N output terminals of the N output buffers and a first endpoint. The second auxiliary switch is coupled between the first output terminal and a second endpoint. The third auxiliary switch is coupled between the first output terminal and a third endpoint. Each of the first endpoint, the second endpoint, and the third endpoint receives a first fixed voltage, a second fixed voltage, a third fixed voltage, or is in a floating state.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: May 5, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Han-Kun Wu, Pang-Chen Hung
  • Patent number: 10643921
    Abstract: A chip on film package includes a base film, a patterned circuit layer, a chip and a heat dissipation sheet. The base film includes a first surface and a mounting region located on the first surface. The patterned circuit layer is disposed on the first surface. The chip is disposed on the mounting region and electrically connected to the patterned circuit layer. The heat dissipation sheet includes a first adhesive layer disposed over the base film, a second adhesive layer disposed over the first adhesive layer, and a graphite layer disposed between the first adhesive layer and the second adhesive layer, wherein at least one of the first adhesive layer and the second adhesive layer is a double-sided adhesive with carrier, which comprises two adhesives and a carrier disposed between the two adhesives.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: May 5, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Wen-Ching Huang, Chien-Chen Ko, Ling-Chieh Li
  • Patent number: 10643574
    Abstract: A timing controller and an operation method thereof are provided. The timing controller includes a transmitter circuit and a control circuit. The control circuit ends a normal mode to enter a swing boost mode when a lock signal fed back by a source driving circuit indicates that quality of data signal is deteriorated in the normal mode. In the swing boost mode, the control circuit controls the transmitter circuit to boost the swing of the data signal from a normal level to a high level. The control circuit ends the swing boost mode and enters a clock training mode when the source driving circuit causes loss of lock to the data signal in the swing boost mode. In the clock training mode, the control circuit controls the transmitter circuit to employ a clock training data string as the data signal to transmit to the source driving circuit.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: May 5, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Syang-Yun Tzeng, Cheng-Kai Kuei, Chin-Hung Hsu
  • Publication number: 20200134285
    Abstract: A touch apparatus and a touch detection integrated circuit (IC) thereof are provided. The touch detection IC includes a driving signal generation circuit and a receiving circuit. The driving signal generation circuit is configured to control a touch panel to perform touch sensing operation and control a fingerprint sensor to perform fingerprint sensing operation. The receiving circuit receives and processes a touch signal of the touch panel during a first period when the driving signal generation circuit transmits the first driving signal for controlling the touch panel to perform touch sensing operation. The receiving circuit receives and processes a fingerprint signal of the fingerprint sensor during a second period when the driving signal generation circuit transmits the second driving signal for controlling the fingerprint sensor to perform fingerprint sensing operation.
    Type: Application
    Filed: November 7, 2019
    Publication date: April 30, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Ching-Ho Hung, Jiun-Jie Tsai, Ting-Hsuan Hung, Wei-Lun Shih
  • Publication number: 20200135695
    Abstract: A chip on film package including a flexible film, a first patterned circuit layer, one or more first chips, a second patterned circuit layer, and one or more second chips. The flexible film includes a first surface and a second surface opposite to the first surface. The first patterned circuit layer is disposed on the first surface. The one or more first chips are mounted on the first surface and electrically connected to the first patterned circuit layer. The second patterned circuit layer is disposed on the second surface. The one or more second chips are mounted on the second surface and electrically connected to the second patterned circuit layer.
    Type: Application
    Filed: October 29, 2018
    Publication date: April 30, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chun-Yu Liao, Teng-Jui Yu
  • Publication number: 20200137423
    Abstract: A video processing apparatus and a video processing circuit of the video processing apparatus are provided. The video processing circuit includes a video processor, a first memory controller, a second memory controller and a distributor. The video processor includes at least one sub-processing-tasks processor which is configured to execute one or more sub-processing tasks respectively. The first memory controller controls a first memory. The second memory controller controls a second memory. The distributor stores the data outputted by the video processor to the first memory and the second memory through the first memory controller and the second memory controller respectively.
    Type: Application
    Filed: December 24, 2019
    Publication date: April 30, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Yu-Wei Chang, Po-Chin Hu
  • Patent number: 10636386
    Abstract: A display device includes a plurality of sub-pixel arrays and each of sub-pixel arrays includes a plurality of first sub-pixels having a first color and forming a plurality of vertexes of a virtual quadrilateral, wherein there is not any other first sub-pixels having the first color located in the virtual quadrilateral; at least one second sub-pixel, having a second color different from the first color and located in the virtual quadrilateral; and at least one third sub-pixel, having a third color different from the first color and the second color and located in the virtual quadrilateral.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: April 28, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Shang-Yu Su, Feng-Ting Pai
  • Patent number: 10636341
    Abstract: A method of processing an image data for an image processing device includes a plurality of steps. The steps include receiving the image data; storing the image data in a frame buffer of the image processing device; performing a signal processing procedure on the image data obtained from the frame buffer, to generate a final display data; restoring the final display data in the frame buffer; and entering a power saving mode after the final display data is restored in the frame buffer. In the power saving mode, the image processing device performs the following steps: turning off the signal processing circuit; and outputting the final display data restored in the frame buffer, to display the final display data.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: April 28, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chia-Hsin Tung, Yung-Chien Fan, Wen-Kai Hsieh, Shu-Yuan Hsu
  • Patent number: RE47977
    Abstract: A data control circuit includes an output stage circuit, a switch circuit, and an impedance module. The output stage circuit outputs a data signal. An input terminal of the switch circuit is coupled to an output terminal of the output stage circuit, and an output terminal of the switch circuit is coupled to a post-stage circuit. According to a control of a control signal, the switch circuit determines whether to transmit the data signal of the output stage circuit to the post-stage circuit. The impedance module is configured in the output stage circuit, configured between the output stage circuit and the switch circuit, or configured in the switch circuit. Here, the impedance module reduces noise flowing from the switch circuit to the output stage circuit.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: May 5, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Tse-Hung Wu, Chao-Kai Tu, Chia-Wei Su