Patents Assigned to Silicon Works Co., Ltd.
  • SOURCE DRIVING CIRCUIT
    Publication number: 20200202763
    Abstract: A source driving circuit includes a first source channel configured to output a first source driving signal to a display panel; a second source channel configured to output a second source driving signal to the display panel; a first gamma circuit configured to output first gamma values to the first source channel; and a second gamma circuit configured to output second gamma values to the second source channel. The first gamma circuit may set the first gamma values to values corresponding to red or green depending on a first switching operation of a first demultiplexer of the display panel corresponding to the first source channel. The second gamma circuit may set the second gamma values to values corresponding to blue or green depending on a second switching operation of a second demultiplexer of the display panel corresponding to the second source channel.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 25, 2020
    Applicant: Silicon Works Co., Ltd.
    Inventor: Yong Sung Ahn
  • ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT
    Publication number: 20200203947
    Abstract: An electrostatic discharge protection circuit includes a first internal circuit formed between a first power line and a first ground line, and configured to operate in a range between a first power and a first ground; a second internal circuit formed between a second power line and a second ground line, and configured to operate in a range between a second power having a level higher than the first power and a second ground; a signal line connecting an output terminal of the first internal circuit and an input terminal of the second internal circuit; and a protection circuit configured to form a bypass path for bypassing a stress due to electrostatic discharge when the electrostatic discharge occurs, between the signal line and the second ground line, to protect a semiconductor device of the second internal circuit from the electrostatic discharge.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 25, 2020
    Applicant: Silicon Works Co., Ltd.
    Inventors: Jae Min Kim, Jae Hyun Lee, Yong Nam Choi
  • Low power driving system and timing controller display apparatus
    Patent number: 10692418
    Abstract: The present invention discloses a low power driving system and timing controller for a display apparatus. The low power driving system may include: a timing controller configured to divide a display pattern into a static pattern and a dynamic pattern based on a difference between previous line data and current line data, and transmit a packet into which one of first option information corresponding to the static pattern and second option information corresponding to the dynamic pattern is applied; and a source driver configured to receive the packet, and perform a low power mode corresponding to the static pattern according to the first option information or perform adaptive charge sharing corresponding to the dynamic pattern according to the second option information.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: June 23, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Nam Seok Seo, Young Kwang Kim, Young Bok Kim, Hyun Mo Yang, Hae Won Lee, Ju Ho Lee
  • Display device
    Patent number: 10671198
    Abstract: Provided is a display device that transmits and receives data on the basis of a MPI protocol. The display device includes a microcontroller, source drivers, and first and second MPI buses, wherein the microcontroller and the source drivers perform bi-directional communication on the basis of the MPI protocol in which transmission types for occupying the first and second MPI buses are set.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: June 2, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jong Min Park, Hyun Woo Jeong, Ha Na Choi, Hun Yong Lim
  • Clock recovery system of displays apparatus
    Patent number: 10671473
    Abstract: Disclosed is a clock recovery system of a display apparatus including a clock recovery unit which uses changeable option information used for recovering a clock signal and defining a duty, generates delayed clock signals having the duty corresponding to the option information in a clock training section, and outputs one of the delayed clock signals as the clock signal.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 2, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Yong Hwan Moon, Yong Ik Jung, In Seok Kong, Jun Ho Kim
  • Inverse tone mapping method
    Patent number: 10664961
    Abstract: The present invention provides a technology that separates a low-contrast-ratio image into sublayer images, classifies each sublayer image into several categories in accordance with the characteristics of each sublayer image, and learns a transformation matrix representing a relationship between the low-contrast-ratio image and a high-contrast-ratio image for each category. In addition, the present invention provides a technology that separates an input low-contrast-ratio image into sublayer images, selects a category corresponding to each sublayer image, and applies a learned transformation matrix to generate a high.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: May 26, 2020
    Assignees: SILICON WORKS CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Yong Woo Kim, Sang Yeon Kim, Woo Suk Ha, Mun Churl Kim, Dae Eun Kim
  • Touch driving device
    Patent number: 10664076
    Abstract: The present invention provides a touch driving device comprising: a driving channel for supplying a first driving voltage to a sensor electrode in a multi-touch mode and supplying a second driving voltage smaller than the first driving voltage to a sensor electrode group in a one-touch mode; and a connection unit for connecting the sensor electrode to the driving channel in the first mode and connecting the sensor electrode group to the driving channel in the second mode.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: May 26, 2020
    Assignee: SILICON WORKS CO., LTD.
    Inventor: YongSung Ahn
  • Sensing circuit of display device for sensing pixel current
    Patent number: 10657902
    Abstract: Disclosed is a sensing circuit of a display device for external compensation of an OLED. The sensing circuit includes a current receiving unit configured to receive a pixel current containing a leakage current, convert the pixel current at a preset current ratio, and output the converted pixel current; a current source unit; a current sinking unit; a current detection unit; and a detection signal output unit configured to sample an offset voltage corresponding to the leakage current using the detected current.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: May 19, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jae Kwan Lee, Dong Hyun Hwang, Hyun Ho Kim
  • DISPLAY DRIVING DEVICE
    Publication number: 20200152107
    Abstract: Disclosed is a display driving device that supports accurate correction of the characteristics of pixels by reflecting the characteristics of a source driver in realtime. The display driving device may include: a sensing circuit configured to sense pixel signals for correcting characteristics of pixels of a display panel and sense at least one reference signal for correcting characteristics of a source driver when sensing the pixel signals; and an analog digital converter configured to convert the pixel signals and the at least one reference signal sensed by the sensing circuit into pixel data and reference data, and to transmit the pixel data and the reference data.
    Type: Application
    Filed: July 13, 2017
    Publication date: May 14, 2020
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Su Hun YANG, Kyung Jik MIN, Won Kab OH, Jeong Hie CHOI
  • DEVICE AND METHOD FOR MEASURING ORGANIC LIGHT EMITTING DIODE
    Publication number: 20200135072
    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: Application
    Filed: February 7, 2018
    Publication date: April 30, 2020
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Kyung Jik MIN, Jeong Hoon CHOI, Dong Ju KIM, Jung Bae YUN
  • In-cell touch organic light-emitting display device and driving circuit thereof
    Patent number: 10627966
    Abstract: The present disclosure provides technology for an in-cell organic light-emitting display device. The present disclosure enables one component of an organic light-emitting display device to be used not only for a display operation but also for a touch operation, thus achieving an in-cell organic light-emitting display device.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: April 21, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventor: Young Sun Na
  • SOURCE DRIVER
    Publication number: 20200118484
    Abstract: The present invention discloses a source driver that drives a source driver. The source driver is configured in such a manner that a source driving module for driving display data and a conversion module for converting a sensing signal of a display panel into sensing data share components thereof. Thus, the area of the source driver can be reduced.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Applicant: Silicon Works Co., Ltd.
    Inventors: Jae Kwan Lee, Jong Keun Hwang
  • Pixel sensing device and panel driving device
    Patent number: 10621910
    Abstract: The present invention provides a pixel sensing device for sensing characteristics of pixels arranged on a display panel, processing and converting the same into valid sensing data, and transmitting the valid sensing data to an external device.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: April 14, 2020
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Seung Hwan Ji, Jung Bae Yun, Min Young Jeong, Jeung Hie Choi
  • DISPLAY DEVICE, AND SOURCE DRIVER AND PACKET RECOGNITION METHOD THEREOF
    Publication number: 20200111444
    Abstract: Disclosed are a display device, and a source driver and a packet recognition method thereof. In the display device, when check information of a control data packet of transmitted transmission data is normal, a control data packet of to be restored is updated with a control data packet of a current cycle, and when the check information is abnormal, the control data packet to be restored is maintained, so that it is possible to normally drive a source signal even through there is an error or a change in the control data packet.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 9, 2020
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Ju Young SHIN, Sang Min LEE, Su Hun YANG, Jeung Hie CHOI
  • Multi-level step-up converters with flying capacitor
    Patent number: 10615686
    Abstract: An embodiment provides a technology of sharing electric charges of two or more flying capacitors in a time interval in which a plurality of flying capacitors are floated, so as to control the charging/discharging balance of the flying capacitors, in a step-up converter.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: April 7, 2020
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Young Jin Woo
  • Display apparatus and driving circuit thereof
    Patent number: 10600349
    Abstract: The present invention relates to a display apparatus which drives a display panel to display an image, and a driving circuit thereof. The display apparatus includes a timing controller configured to provide a control option having a value for compensating for pixel data and a gray scale, and a driving circuit configured to combines the control option and the pixel data and output an output voltage.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: March 24, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun Ho Cho, Yong Ik Jung
  • Data driving device and display device including the same
    Patent number: 10580387
    Abstract: Disclosed are a data driving device and a display device including the same. The display device may include: a timing controller configured to include lock fail data in an input signal and transmit the input signal in each preset period; and a source driver configured to recover the lock fail data from the input signal, and reset an internal circuit in response to the recovered lock fail data.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: March 3, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hun Yong Lim, Yong Min Kim, Ju Ho Lee
  • Pixel sensing apparatus and panel driving apparatus
    Patent number: 10565937
    Abstract: The present invention relates to technology for driving a display device, and provides technology which, in sensing pixels arranged in a panel, processes a signal having a wide range by using a low-voltage element.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: February 18, 2020
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Dong Hyun Hwang, Hyun Ho Kim, Se Won Lee
  • SOURCE DRIVER FOR DISPLAY APPARATUS
    Publication number: 20200035143
    Abstract: The present invention relates to a source driver for a display apparatus, which is capable of removing delay of a DAC (Digital-Analog Converter) and in which a part of gamma lines for providing gamma voltages to the DAC is designed to have a large width and a small resistance value. Before driving a first gamma voltage to a level corresponding to display data, the DAC can select an adjacent gamma line having a small resistance value and drive a second gamma voltage, thereby removing a delay time.
    Type: Application
    Filed: October 3, 2019
    Publication date: January 30, 2020
    Applicant: SILICON WORKS CO., LTD.
    Inventor: Jae Kwan LEE
  • FLEXIBLE CIRCUIT BOARD FOR DISPLAY
    Publication number: 20200027824
    Abstract: A flexible circuit board for a display, having a chip-on-film structure, is disclosed. A connection pattern which is selected as a first connection pattern among connection patterns connected to panel contact pads does not reach a cutting line and is confined within a product region. As a consequence, the connection pattern selected as the first connection pattern may be prevented from being exposed on a cutting section along the cutting line, and thus, may be prevented from being changed in its electrical property due to penetration of moisture.
    Type: Application
    Filed: February 14, 2018
    Publication date: January 23, 2020
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Kyung Jik MIN, Ju Young SHIN, Ji Hyun HWANG, Jung Bae YUN