Patents Assigned to LX Semicon Co., Ltd.
  • Publication number: 20240233668
    Abstract: A display driving apparatus includes an average calculator for each frame configured to calculate an average blue image signal as an average of blue image signals configuring one frame, a gain calculator configured calculate a frame gain for correcting the blue image signals configuring the one frame using the average blue image signal, and a pixel gain calculator configured to calculate a pixel gain for correcting a blue image signal of each unit pixel using the blue image signal configuring each unit pixel.
    Type: Application
    Filed: January 5, 2024
    Publication date: July 11, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventor: Hyeon Woon SHIN
  • Publication number: 20240233666
    Abstract: Disclosed herein is an apparatus for driving a display, including a main color detector configured to detect a main color of a unit pixel based on a red image signal, a green image signal, and a blue image signal, a color difference calculator configured to calculate an image signal difference among the red image signal, the green image signal, and the blue image signal, and a weight calculator configured to calculate a weight for the red image signal, the green image signal, and the blue image signal based on the image signal difference.
    Type: Application
    Filed: December 21, 2023
    Publication date: July 11, 2024
    Applicant: LX Semicon Co., Ltd.
    Inventors: SEUL GI LEE, YONG HEE KIM, JUN YOUNG PARK, JIN HO LEE
  • Patent number: 12032788
    Abstract: Disclosed herein is a touch display device including a panel driver configured to drive gate lines and data lines of a panel and drive and sense touch electrodes, and a timing controller configured to control a drive timing and an output of the panel driver, wherein the timing controller time-divisionally drives each frame period into a plurality of display operation periods and a plurality of touch operation periods such that each display operation period and each touch operation period alternate and, during at least one compensation period of a first compensation period adjacent to an immediately preceding touch operation period and a second compensation period adjacent to an immediately following touch operation period in each display operation period, compensates at least one of a data signal and a gate signal, which is to be supplied to a compensation area, according to a variation in state of a panel.
    Type: Grant
    Filed: April 26, 2023
    Date of Patent: July 9, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Young Gi Kim, Jae Woo Jeon, Young Hoon Bin, Hae Won Lee
  • Patent number: 12032783
    Abstract: A touch sensing device for preventing occurrence of electromagnetic interference (EMI) due to a clock includes a touch controller configured to operate in a write mode during a display period and operate in a read request mode or a read operation mode during a touch sensing period, and a touch driver configured to receive touch sensing data from a touch sensor during the touch sensing period and transmit the touch sensing data to the touch controller through a first bus and a second bus. The first bus is used for clock transmission in the write mode and the read request mode and is used for data transmission in the read operation mode. The second bus is used for data transmission in the write mode, the read request mode, and the read operation mode.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: July 9, 2024
    Assignee: LX Semicon Co., Ltd.
    Inventors: Sun Young Park, Hong Kyun Jung, Sung Chun Kim
  • Patent number: 12033587
    Abstract: A display driving apparatus includes a source driving circuit supplying a first source signal to a first display area to display a first image and supply a second source signal to a second display area to sense characteristics of a pixels of the second display area when a display panel operates in a hybrid mode, the second display area being in a turn-off state during the hybrid mode, a gate driving circuit supplying a gate pulse to first gate lines of the first display area and supply the gate pulse to target gate lines of the second display area, a timing controller transferring first image data for the first image and sensing data for sensing to the source driving circuit and compensate for second image data for a second image which is to be displayed after the first image, based on a target compensation value obtained from a sensing result.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: July 9, 2024
    Assignee: LX Semicon Co., Ltd.
    Inventors: Do Hoon Lee, Hyun Kyu Jeon, Ji Won Lee, Jung Eun Baek, Jae Chan Cho
  • Patent number: 12026338
    Abstract: Disclosed herein are a touch display device capable of solving distortion of a display image due to a difference in condition between touch nodes, and a method of driving the same. The touch display device includes a panel driver configured to drive gate lines and data lines of a panel and drive and sense touch electrodes, a timing controller configured to control an operation of the panel driver, and a touch controller configured to control touch electrode driving and a sensing operation of the panel driver, wherein the timing controller compensates a display signal for a difference in condition between a touch node where a touch occurs and a touch node where a touch does not occur or a difference in physical structure between the touch nodes.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: July 2, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Young Gi Kim, Hae Won Lee, Woong Jin Oh, Jae Woo Jeon
  • Patent number: 12021534
    Abstract: A clock data recovery circuit of a display suitable for recovering a clock from a clock data signal. The clock data recovery circuit includes a clock recovery circuit configured to delay an input clock through delay units of multiple stages, and output delayed clocks from the delay units, respectively; and a data recovery circuit configured to recover data of a clock data signal using a recovered clock selected among the delayed clocks.
    Type: Grant
    Filed: November 22, 2022
    Date of Patent: June 25, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jong Suk Lee, Soek Jae Oh, Won Kim
  • Patent number: 12021524
    Abstract: A level shifter includes a converter configured to generate a first driving signal and a second driving signal; a current sensing circuit configured to detect a current corresponding to a voltage change of second power, and generate a freezing signal according to the current; a freezing circuit configured to control an operation of the converter according to the freezing signal.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: June 25, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventor: Jang Hyun Yoon
  • Patent number: 12020407
    Abstract: The present disclosure discloses an image data processing system, and discloses an image data processing system for a vehicle, which compensates image data by reflecting an ambient illumination.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: June 25, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Ho Heo, Seung Wan Yu, Ji Won Lee, Yong Hee Kim, Kwon Chung
  • Patent number: 12020633
    Abstract: An aspect relates to a display driving device and a method for determining an error of a source amplifier in a display driving device, and determines whether an output buffer (e.g., a source amplifier) provided at an output stage of a display driving device providing data voltage to each pixel (e.g., subpixel) of a display panel has an error to prevent a phenomenon in which a screen is not normally displayed.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: June 25, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventor: Sung Dae Yeo
  • Patent number: 12022067
    Abstract: An image encoding/decoding method and apparatus for performing intra prediction using a plurality of reference sample lines are provided. An image decoding method may comprise configuring a plurality of reference sample lines, reconstructing an intra prediction mode of a current block, and performing intra prediction for the current block based on the intra prediction mode and the plurality of reference sample lines.
    Type: Grant
    Filed: July 17, 2023
    Date of Patent: June 25, 2024
    Assignee: LX Semicon Co., Ltd.
    Inventors: Jin Ho Lee, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Ha Hyun Lee, Dong San Jun, Hui Yong Kim
  • Patent number: 12014691
    Abstract: In a case when a camera is disposed under a display panel, a bounded part between a camera area and a surrounding area may have a brightness difference due to a difference in pixel disposition density. The present disclosure allows minimizing such a boundary effect by compensating for greyscale values of pixels in the bounded part.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: June 18, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Hyun Kyu Jeon, Ji Won Lee, Ji Hong Yuk, Jun Hun Park, Xin Cui
  • Publication number: 20240196493
    Abstract: Disclosed are a pulse width modulation (PWM) signal generation circuit and a lamp control system including the same. The PWM signal generation circuit includes a counting circuit configured to generate a counting signal, a pulse period control circuit configured to convert the counting signal into a first analog output signal and compare the first analog output signal with a first comparison voltage to generate a first output signal, a pulse width control circuit configured to convert the counting signal into a second analog output signal and to compare the second analog output signal with a second comparison voltage to generate a second output signal, and a control logic circuit configured to determine a period of a PWM signal based on the first output signal, determine a pulse width of the PWM signal based on the second output signal, and output the PWM signal having the period and the pulse width.
    Type: Application
    Filed: December 11, 2023
    Publication date: June 13, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Won Joon HWANG, Nak Hun KIM, Byung Jun SEO, Ju Hyun LEE
  • Publication number: 20240196498
    Abstract: A current source device for electrostatic discharge and a display device including the same are disclosed. The current source device includes a sourcing circuit including a first MOS transistor configured to transmit a current flowing from a pad to a first node in response to a current control voltage, and a second MOS transistor configured to transmit the current flowing from the first node to a ground in response to a bias voltage, and a control circuit including an amplifier configured to generate the current control voltage based on a setting voltage applied from an outside and a voltage of the first node, a first resistor disposed between an output terminal of the amplifier and a gate terminal of the first MOS transistor, and a first switch configured to transmit the bias voltage to a gate terminal of the second MOS transistor in response to a switching control signal.
    Type: Application
    Filed: December 7, 2023
    Publication date: June 13, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Min Cheol KONG, Ji Hwan KIM
  • Publication number: 20240192575
    Abstract: An analog front-end circuit includes a hall bias correction loop circuit configured to correct a sensing voltage of a hall sensor by adjusting a hall bias current flowing in the hall sensor while tracking a change in the sensing voltage of the hall sensor based on a temperature change, an offset correction loop circuit configured to correct an offset correction voltage while tracking an offset change of the hall sensor and an offset change of an amplifier circuit based on the temperature change, the amplifier circuit configured to amplify and output the sensing voltage of the hall sensor, corrected through at least one of the hall bias correction loop circuit and the offset correction loop circuit, and an analog-digital converter configured to convert an output voltage of the amplifier circuit into sensing data and output the sensing data.
    Type: Application
    Filed: December 7, 2023
    Publication date: June 13, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Hyung Seup KIM, Kyu Ho KIM, Dong Hwan YOON, Jin Kook YUN, Dong Gil JEONG
  • Publication number: 20240194158
    Abstract: A display device according to an embodiment of the present invention may comprise a panel configured to include a plurality of RGB groups, each of the plurality of RGB groups includes a plurality of RGB channels and each of the plurality of RGB channels include a plurality of RGB pixels and a source driver configured to: obtain error information based on error test information for testing an error of data transmitted from a timing controller, convert the error information into an identification code, generate an RGB information set matching the converted identification code, and supply a data voltage to each of a plurality of RGB groups constituting the panel based on the generated RGB information set, wherein the panel is configured to display the identification code based on the data voltage.
    Type: Application
    Filed: December 12, 2023
    Publication date: June 13, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Hyun Pyo CHO, Myung Yu KIM
  • Publication number: 20240194118
    Abstract: A method for controlling a display apparatus, including calculating at least one of a complexity or an average picture level (APL) of the received image signal, determining a final shift time of pixels based on the at least one of the calculated complexity or APL of the image signal, and shifting the received image signal in a horizontal direction or a vertical direction and outputting the shifted image signal, based on track coordinate information stored in a memory and the determined final shift time of the pixels.
    Type: Application
    Filed: December 7, 2023
    Publication date: June 13, 2024
    Applicant: LX Semicon Co., Ltd.
    Inventors: Hyeon Woon SHIN, Jin Han YOON, Ho Min LIM
  • Publication number: 20240195430
    Abstract: The present disclosure relates to an analog-to-digital converter that minimizes or prevents a loss of charges charged in a capacitor array by controlling a switching sequence of switches when switching phases. The analog-to-digital converter includes a DAC circuit including a CDAC circuit and a RDAC circuit, a comparator that compares an output voltage of the DAC circuit with a common mode voltage and outputs a comparison result, and a control logic circuit that controls a switch operation of the DAC circuit and the comparison operation of the comparator in a sampling phase and a comparison phase, outputs digital data based on the comparison result of the comparator, and controls switches that apply the common mode voltage and first and second reference voltages to the capacitor array in the CDAC circuit in response to that the sampling phase is switched to the comparison phase based on a specific switching timing sequence.
    Type: Application
    Filed: December 12, 2023
    Publication date: June 13, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Won Joon HWANG, Hai Feng JIN, Ju Pyo HONG
  • Publication number: 20240195398
    Abstract: Disclosed are a clock phase converter and a phase converting method that can generate a converted clock signal with a desired amount of delay by selecting and outputting an output signal corresponding to a preset value among output signals of a plurality of delayed clock signal generators that detect the transition of a clock signal and generate delayed clock signals by sequentially delaying the clock signal by a certain period of time.
    Type: Application
    Filed: December 13, 2023
    Publication date: June 13, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Jong Suk LEE, Seok Jae OH
  • Publication number: 20240194693
    Abstract: The embodiment relates to a wiring structure of a transistor for driving a display panel, a method of manufacturing the same, and a display driver IC including the same. The wiring structure of a transistor for display driving according to an embodiment comprises a substrate, a device layer disposed on the substrate including a plurality of transistors, and at least one insulating layer disposed on the device layer, a plurality of metal wirings that electrically connect the plurality of transistors and are spaced apart from each other and disposed in the insulating layer; and an air gap disposed between the spaced metal wirings; and an oxidation prevention layer disposed on the metal wirings. The oxidation prevention layer may be disposed on the top and side surfaces of the metal wiring and the insulating layer.
    Type: Application
    Filed: December 7, 2023
    Publication date: June 13, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventor: Cheongsik YU