Patents Assigned to Silicon Works Co., Ltd.
  • Patent number: 11508281
    Abstract: Provided are a mura compensation circuit which prevents a change in color of a pixel upon mura compensations for the pixel and a driving apparatus for a display applying the same. The mura compensation circuit includes a mura memory configured to store mura information including location information of a pixel having mura and compensation values for colors thereof, a gain adjustment unit configured to provide adjustment compensation values generated by applying an adjustment gain having an identical ratio to the compensation values for the colors of the pixel, and a mura compensation unit configured to receive display data of the colors of the pixel and to perform mura compensations on the display data of the colors of the pixel using the adjustment compensation values corresponding to the location information.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: November 22, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jun Young Park, Ki Taek Kim
  • Patent number: 11508319
    Abstract: A source driver capable of improving sensing accuracy even when a black image signal is provided to reduce motion blur during a sensing period for sensing signals of pixels of a display panel, and a display device including the same. The source driver includes an output buffer configured to output a source signal; a voltage terminal applied with a black image signal of a preset voltage level; a source output terminal connected to a data line of a display panel; and a switch circuit configured to connect one of an output terminal of the output buffer and the voltage terminal to the source output terminal, wherein the switch circuit connects the voltage terminal to the source output terminal during a black image insertion period of a sensing period in which a pixel of the display panel is sensed.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: November 22, 2022
    Assignee: Silicon Works Co., Ltd
    Inventors: Won Kim, Young Bok Kim
  • Patent number: 11509314
    Abstract: The present disclosure discloses an all-digital phase-locked loop. The all-digital phase-locked loop may include a time-to-digital conversion circuit configured to convert phase differences between a reference signal and a feedback signal into respective digital values and to output a first data signal and a second data signal corresponding to the respective digital values, a digital loop filter configured to select one of the first data signal and the second data signal as valid data and output a control signal by operating the valid data and a first register signal, a digitally controlled oscillator configured to generate an oscillation signal and control a frequency of the oscillation signal in response to the control signal, and a divider configured to divide the oscillation signal and output the feedback signal to the time-to-digital conversion circuit.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: November 22, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jong Suk Lee, Young Bok Kim, Chung Hwan Son, Seok Jae Oh, Yeh Ju Ka
  • Patent number: 11508274
    Abstract: The present disclosure relates to a technique for determining a fault of a data line disposed in a display panel using a data driving device. The data driving device may determine a fault of a data line by supplying a data voltage corresponding to a greyscale value to a data line and checking whether another data line is influenced by the data voltage.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: November 22, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventor: Jung Min Choi
  • Patent number: 11488563
    Abstract: The present disclosure relates to a device and a method for processing image data for driving a display panel. More particularly, it relates to a device and a method to vary the brightness of each pixel according to a representative brightness value of an image.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: November 1, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Young Jun Jun, Bo Sung Kim
  • Patent number: 11488521
    Abstract: When the frequency of a driving clock used to drive a pixel in a display device reaches a target frequency, some of delay circuits are disabled, thereby reducing power consumption for generating the driving clock.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: November 1, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Jin Ho Choi, Jang Su Kim, Tae Geun Kim
  • Patent number: 11487391
    Abstract: The present disclosure provides a touch sensing device reducing the touch driving time and the signal to noise ratio (SNR) by a multi-driving using driving signals that can be distinguished from each other by their frequencies and codes.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: November 1, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Mohamed Gamal Ahmed Mohamed, Jun Seop Lee, Mun Seok Kang
  • Patent number: 11488505
    Abstract: An embodiment is disclosed that makes it possible to reduce the area of a digital-to-analog converter circuit by interpolating one reference voltage and generating a plurality of gamma voltages.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: November 1, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Taiming Piao, Young Bok Kim, Young Tae Kim, Won Kim
  • Patent number: 11482180
    Abstract: Disclosed are a device and method for measuring an organic light emitting diode, which measures an amount of energy for compensating for a burn-in of an organic light emitting diode, by sensing a charged voltage of a sensing line connected to the organic light emitting diode. The device for measuring an organic light emitting diode includes an external current source, and is configured to measure an amount of energy for compensating for a burn-in, by sensing a charged voltage of a parasitic capacitor of a sensing line.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 25, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventors: Kyung Jik Min, Jeong Hoon Choi, Dong Ju Kim, Jung Bae Yun
  • Patent number: 11482187
    Abstract: Disclosed herein is a driver integrated circuit (IC), which can be miniaturized and includes a plurality of circuits, including a first substrate, a first circuit driven at a first level voltage and mounted on the first substrate, a second substrate bonded to the first substrate, and a second circuit including one or more sub-circuits driven at a second level voltage that is higher than the first level voltage, wherein at least one among the one or more sub-circuits is mounted on the second substrate.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: October 25, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Kee Joon Choi
  • Patent number: 11480936
    Abstract: Disclosed is a system for transmitting and receiving safety information, which generates first safety information about a control target and second safety information representing the occurrence or not of an error in the control target by using one microcontroller. The system includes a first slave controller generating first safety information and second safety information by using sensing data obtained from a control target and a master controller receiving the first safety information and the second safety information from the first slave controller through a wireless channel. When an error occurs in the first slave controller, the first slave controller transmits the second safety information to a second slave controller, and the second slave controller transmits the second safety information, received from the first slave controller, to the master controller.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: October 25, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Myoung Su Song, Jae Wan Kim, Il Kwon Kim
  • Patent number: 11483824
    Abstract: The present disclosure relates to a wireless battery management system, and more particularly, to a wireless battery management system, a node for wireless communication, and a method of transmitting data, which ensure stability and efficiency when obtaining battery data through wireless communication. A wireless battery management system includes a manager node obtaining battery data from a plurality of monitor nodes by using a first channel and a second channel which are communication channels based on wireless communication, a first monitor node collecting first battery data and transmitting the first battery data to the manager node through the first channel during a first dedicated slot, and a second monitor node collecting second battery data and transmitting the second battery data to the manager node through the second channel during the first dedicated slot.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: October 25, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Hee Jin Lee, Ki Suk Cho, Kyu Ho Kim, Yong Ju Seon, Jong Chan Kim
  • Patent number: 11482150
    Abstract: A display driving device supporting a low power mode according to an aspect of the present disclosure that is capable of minimizing power consumption when driving in the low power mode includes a plurality of output buffers connected to data lines to precharge the data lines with a first data signal corresponding to a black image when a precharge horizontal line is driven in a display panel including a first region where a standby image is displayed and the second region where the black image is displayed, the precharge horizontal line being included in the second region, and a gamma voltage generator connected to the data lines to output the first data signal to the data lines when other horizontal lines other than the precharge horizontal line in the second region are driven.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: October 25, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Byeong Yong Kim, Chang Bae Lee, Se Jin Choi
  • Patent number: 11474638
    Abstract: The present disclosure relates to a technology of sensing a touch. According to the present disclosure, touch sensors are driven in a time division way using multiplexers disposed on a panel and auxiliary signals, with a same phase as that of driving signals, are supplied to electrodes around a touch sensor in driving so as to reduce the introduction of noises from the neighboring electrodes.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: October 18, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Jung Min Choi
  • Patent number: 11474491
    Abstract: Disclosed are a communication method between a master controller and slave controllers, a slave controller for the communication method, and a battery management system using the communication method and the slave controller, in which the master controller receives safety information about battery cells through a plurality of channels even when each of a plurality of slave controllers includes only one micro controller unit, thereby minimizing the increase in the cost and enhancing the safety of the battery management system. The communication method includes performing bidirectional communication between a master controller and first to Nth (where N is an integer equal to or more than two) slave controllers through a first communication channel, and receiving, by the master controller, an indication signal through a second communication signal via the first to Nth slave controllers.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: October 18, 2022
    Assignees: SILICON WORKS CO., LTD., LG ENERGY SOLUTION, LTD.
    Inventors: Myoung Su Song, Jae Wan Kim, Jin Yong Jeon, Ki Suk Cho, Il Kwon Kim, Seung Jun Choi, Kyu Ho Kim, Kyoung Choon Min, Ki Young Lee, Won Gon Kim
  • Patent number: 11455927
    Abstract: The present disclosure relates to a data processing device, a data driving device, and a system for driving a display device, and more particularly, to a data processing device, a data driving device, and a system for speeding up data communication in a display device.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: September 27, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Do Seok Kim, Yong Hwan Mun, Myung Yu Kim, Hyun Pyo Cho
  • Patent number: 11455201
    Abstract: The present embodiment relates to a method and a system for data transmission and reception of a display device and, more specifically, to a method and a system for repeatedly checking whether an error has occurred in a data driving device configuration for high-speed communication when driving the display device to prevent the image quality degradation due to the configuration error.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: September 27, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Do Seok Kim, Yong Hwan Mun
  • Patent number: 11450254
    Abstract: A data driving device and a data processing device may reduce the amount of consumed power by being standing by for data transmission or data reception in a low-power mode.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: September 20, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Yong Sung Ahn
  • Patent number: 11438008
    Abstract: Disclosed are a system and a battery management integration circuit using an incremental analog-to-digital converter (ADC), which can reduce the consumption of the amount of a bias current. The system includes an incremental ADC configured to perform accumulation on an analog signal during an oversampling period and a bias current generator configured to provide a bias current for the accumulation of the incremental ADC. The bias current generator provides a first amount of the bias current in a first period defined from start timing of oversampling to preset timing during the oversampling period, and provides a second amount of the bias current, smaller than the first amount of the bias current, in a second period subsequent to the first period.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: September 6, 2022
    Assignee: Silicon Works Co., Ltd
    Inventors: Ho Yul Choi, Ju Pyo Hong, Ho Jeong Jin, Young Woon Ko
  • Patent number: 11436963
    Abstract: The present disclosure discloses a source driver including a level shift circuit. The source driver may include a level shift circuit outputting second and third logic signals by shifting a level of a first logic signal and a multiplexer transferring a first or second source signal to a first or second pad in response to the second and third logic signals. The level shift circuit may include a first level shifter outputting first and second input signals by shifting the level of the first logic signal, a second level shifter outputting third and fourth input signals by shifting the level of the first logic signal, and an output circuit outputting the second logic signal in response to the second and fourth input signals and outputting the third logic signal in response to the first and third input signals.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: September 6, 2022
    Assignee: Silicon Works Co., Ltd
    Inventors: Goon Seok Oh, Hyo Joong Kim