Patents Assigned to Silicon Works Co., Ltd.
  • 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: 11436971
    Abstract: A display driving apparatus includes an output control circuit configured to, with one frame being divided into a plurality of blank periods by touch driving, output source signals corresponding to display data during the plurality of blank periods; and a polarity control circuit configured to receive pre-polarity control information for polarity inversion, and control polarities of the source signals outputted from the output control circuit, for polarity inversion by the unit of vertical 2 dots for one frame, wherein polarities for pre dummy lines and active data lines of odd-numbered and even-numbered blank periods are controlled by the pre-polarity control information.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: September 6, 2022
    Assignee: Silicon Works Co., Ltd
    Inventors: Yong Min Kim, Ju Ho Lee, Da Sol Won, Se Hyuk An
  • 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
  • Patent number: 11423829
    Abstract: The present disclosure provides a technique for reducing power consumption of circuits generating clocks for driving LEDs.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: August 23, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Jin Ho Choi, Jang Su Kim, Tae Geun Kim
  • Patent number: 11423845
    Abstract: Provided are a source driver integrated circuit (IC) according to the present disclosure including a first buffer in which first sensing data transmitted from a first source driver IC is stored, a sensing data generation circuit configured to sense a characteristic of a driving element included in each pixel and generate second sensing data, a second buffer in which the second sensing data is stored, a control circuit configured to generate a selection signal in response to an operation command, and a selector configured to transmit one of the first sensing data stored in the first buffer and the second sensing data stored in the second buffer to a second source driver IC in response to the selection signal.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: August 23, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: You Jin Kwon, Sang Kwon Kim, Chang Sung Hong, Pyeong Keun Oh, Jun Ho Kwak
  • Patent number: 11422612
    Abstract: The present disclosure, which relates to a technology for controlling power of a display device, allows reducing power consumption by driving circuits for a display operation and circuits for a touch sensing operation with low power depending on a display operation or a touch sensing operation of a display panel.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: August 23, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Jung Min Choi
  • Patent number: 11423994
    Abstract: An electronic device includes a memory device and a timing controller configured to output control signals, which are generated using a first clock signal, to the memory device, generate first captured data by capturing data, which is output from the memory device, using the first clock signal in response to the control signals, and generate control signals using a second clock signal and output the control signals to the memory device when the first captured data is not valid data.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: August 23, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Ho Il Bang
  • Patent number: 11422641
    Abstract: A touch sensing device can reduce the searching time and the report rate for an active pen through a local search for the active pen.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: August 23, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Ho Sup Choi
  • Patent number: 11392313
    Abstract: A memory controller according to an aspect of the present invention includes a BIST (built-in self-tester) configured to test a memory, a scheduler configured to change an execution order of memory commands to be transmitted to the memory, a main controller configured to control the memory, and a switch configured to connect one of an output of the scheduler and an output of the BIST to an input of the main controller in response to a control signal output from the BIST.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: July 19, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Jang Won Seo
  • Patent number: 11392244
    Abstract: An embodiment may encode a driving signal and decode a response signal with the same random code, thereby eliminating noise that occurs in sensing a touch and reducing electromagnetic interference with peripheral circuits.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: July 19, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Mohamed Gamal Ahmed Mohamed
  • Patent number: 11392253
    Abstract: The present disclosure allows increasing the sensing sensitivity or the perception rate for a hovering active pen using a threshold value.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: July 19, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Youn Ho Jung
  • Patent number: 11393398
    Abstract: The present disclosure allows removal of the influence by an unstable pixel power voltage by generating or selectively using a gamma voltage according to a gamma reference voltage variable depending on the level of the pixel power voltage.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: July 19, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Dong Su Lee
  • Patent number: 11393406
    Abstract: The present disclosure relates to a semiconductor integrated circuit for driving a display, and more particularly, to a semiconductor integrated circuit for driving a display to supply gamma voltages to respective DACs through a gamma bus to which a plurality of gamma voltage circuits are connected.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: July 19, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Young Sun Na
  • Patent number: 11367374
    Abstract: Disclosed is data communication between a microcontroller and a source readout circuit, in which the clock circuit of a slave is not needed, and the size of a slave circuit and the amount of power consumed may be reduced.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: June 21, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Yong Woo Choi, Sung Chun Kim, Byoung Sun Ahn
  • Patent number: 11361718
    Abstract: An image processing device reduces power consumption of a backlight by lowering a dimming value through brightness distribution for pixels. The image data processing device includes: an image analyzing circuit configured to analyze original image data on a video image divided into a plurality of regions and calculate a representative brightness value for each region; a dimming value calculating circuit configured to calculate a dimming value for each region in order to adjust the brightness of a backlight according to the representative brightness value; a pixel analyzing circuit configured to analyze brightness distribution for a plurality of pixels in each region; a dimming control circuit configured to re-adjust the dimming value for one region according to the brightness distribution; and a dimming output circuit configured to output, to a backlight driving device, a dimming control signal for driving the backlight according to the dimming value.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: June 14, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Ji Won Lee, Jung Eun Baek, Xin Cui, Do Hoon Lee
  • Patent number: 11361716
    Abstract: The present disclosure relates to a pixel sensing circuit and a panel driving device, and more particularly, to a pixel sensing circuit and a panel driving device for effectively compensating for differences of characteristics of sensing channel circuits depending on locations where the sensing channel circuits are disposed in an integrated circuit.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: June 14, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Won Kim, Young Bok Kim, Young Ho Shin
  • Patent number: 11336313
    Abstract: A data transmission circuit which is improved to be capable of supporting a data transmission mode appropriate for an interface or an application depending on the selection of an option. The data transmission circuit includes a pre-driver configured to output a first differential driving signal, a second differential driving signal and pre-emphasis control signals by using a first differential data signal, a second differential data signal and option signals; a main driver configured to output a first differential transmission signal and a second differential transmission signal by using the first differential driving signal and the second differential driving signal; and a pre-emphasis driver configured to perform pre-emphasis on the first differential transmission signal and the second differential transmission signal to different amplification degrees in a first mode and a second mode by the pre-emphasis control signals.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: May 17, 2022
    Assignee: Silicon Works Co., Ltd
    Inventors: Sang Hoon Paik, Jeong Hoon Nam, Yong Hwan Moon
  • Patent number: 11335276
    Abstract: A display driving device, which adjusts a brightness of an image on the basis of an ambient illumination even without an increase in amount of power consumption, includes a controller determining a clipping ratio for clipping input image data by using an ambient illumination value when the ambient illumination value is input thereto, a gain calculator calculating a frame gain which is to be applied to the input image data, based on the clipping ratio, an input image clipping unit clipping the input image data by applying the frame gain in the input image data, and a gamma converter gamma-converting clipped input image data to generate output image data.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: May 17, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Jin Ho Lee, Heung Lyeol Lee, Hyun Kyu Jeon
  • Patent number: 11334200
    Abstract: Disclosed is a touch sensing device for implementing a high resolution, which decreases a touch sensing period of an active pen in one frame to increase a display period. The touch sensing device includes a touch driver transmitting an uplink signal to an active pen through a touch electrode provided in a display panel during a first touch sensing period included in one frame period, a touch sensing unit sensing a downlink signal transmitted from the active pen on the basis of a capacitance occurring between the active pen and the touch electrode to generate first sensing data during a plurality of second touch sensing periods included in the one frame period, and a touch controller calculating pen data and pen touch coordinates of the active pen on the basis of the first sensing data generated during the second touch sensing period.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: May 17, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Jung Min Choi, Moon Ho Jang, Bang Sik Dong