Patents Examined by Sepehr Azari
  • Patent number: 11551620
    Abstract: A gate driver circuit can include a plurality of stage circuits, in which each of the plurality of stage circuits supplies a gate signal to gate lines arranged in a display panel, and includes an M node, a Q1 node, a Q2 node, a QB node, a line selector, a Q1 node controller, a Q1 node stabilizer, an inverter, a QB node stabilizer, a carry signal output circuit portion, and a gate signal output circuit portion, in which a first low-potential voltage level, a third low-potential voltage level, and a fourth low-potential voltage level for operating the gate driver circuit are set to different values, and the gate driver circuit can have a reduced size and better prevent leakage current while also providing more stable gate signals.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: January 10, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seongho Yun, Dongmyoung Kim
  • Patent number: 11545069
    Abstract: A display panel is provided. The display panel includes at least one transistor of a split structure. The transistor of the split structure comprises a control electrode, a first electrode and a second electrode; the first electrode comprises N first electrode portions, the second electrode comprises N second electrode portions, and N is an integer greater than 2; the N first electrode portions are electrically coupled, and the N second electrode portions are electrically coupled; the display panel has a plurality of transistor regions arranged at intervals, an n-th first electrode portion and an n-th second electrode portion are located in a same transistor region, an m-th first electrode portion and an (m+1)-th first electrode portion are respectively located in two adjacent transistor regions, n and in are an positive integers, n is less than or equal to N, and in is less than or equal to N?1.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 3, 2023
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Xiaoyuan Wang, Yan Fang, Wu Wang, Guangdi Cao, Wenlong Feng
  • Patent number: 11537229
    Abstract: A touch pad pressure detection method and apparatus, a storage medium and a computer device, wherein the method comprises: by means of an elastic wave sensor arranged below a touch pad, detecting a pressing operation on a touch pad to obtain a voltage signal; and determining pressure on the basis of the voltage signal.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: December 27, 2022
    Assignee: Beijing Taifang Technology Co., Ltd.
    Inventors: Chaoliang Du, Hongfeng Guo
  • Patent number: 11532271
    Abstract: A method of determining a model for pixel power consumption for each pixel in a display of a device displaying each color in a color space is disclosed which includes establishing a color space for the display, decomposing the color space into a plurality of subgrids, measuring the pixel power associated with a selected set of colors in each subgrid of the plurality of subgrids, establishing a pixel power model for each subgrid of the plurality of subgrids by applying a function to the power values at the selected set of colors in that subgrid, and deriving a piecewise pixel power model for the entire color space which includes pixel power models for the plurality of subgrids.
    Type: Grant
    Filed: May 28, 2022
    Date of Patent: December 20, 2022
    Assignee: Purdue Research Foundation
    Inventors: Yu Charlie Hu, Pranab Dash
  • Patent number: 11521545
    Abstract: A display device, includes: a display area and a non-display area; a plurality of signal lines over the display area; and a plurality of connection lines in the display area and connected to the signal lines, wherein the plurality of connection lines includes a plurality of first connection lines connected to the signal lines, respectively, a plurality of third connection lines on a same layer as the first connection lines, and a plurality of second connection lines connecting the first connection lines to the third connection lines.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: December 6, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Hwan Cho, Jong Hyun Choi, Ju Chan Park, Seung Min Song, Min Seong Yi
  • Patent number: 11521562
    Abstract: Embodiments of the present disclosure relate to a display device including a display panel having a plurality of gate lines extending in a first direction, a plurality of data lines extending in a second direction, and a plurality of subpixels; a gate driving circuit for supplying scan signals to the plurality of gate lines; a data driving circuit for supplying data voltages to the plurality of data lines and including a sensing circuit of characteristic value to sense the characteristic value of the plurality of subpixels; and a timing controller for controlling the gate driving circuit and the data driving circuit, and determining a defective line by detecting a distorted section for the sensed characteristic value for each subpixel arranged in the second direction in respect to a plurality of blocks corresponding to the display panel.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: December 6, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: SungJoong Kim, GaYong Park
  • Patent number: 11508320
    Abstract: A pixel of an OLED display device includes a first capacitor, a second capacitor, a first transistor configured to generate a driving current, a second transistor configured to transfer a data voltage to a first node, a third transistor configured to diode-connect the first transistor, a fourth transistor configured to transfer an initialization voltage to the second node, a fifth transistor configured to transfer a reference voltage to the first node, a sixth transistor configured to couple a drain of the first transistor and an anode of an organic light emitting diode, a seventh transistor configured to transfer the initialization voltage to the anode of the organic light emitting diode, an eighth transistor configured to transfer the initialization voltage to the drain of the first transistor, and the organic light emitting diode.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: November 22, 2022
    Inventors: Jihye Kim, Jakyoung Jin, Yu-Chol Kim, Jin-Wook Yang
  • Patent number: 11508318
    Abstract: A light emitting display device includes: a first driving transistor; a first anode electrically connected to the first driving transistor; a first capacitor electrically connected to a gate electrode of the first driving transistor; a second driving transistor disposed to be adjacent to the first driving transistor; a second anode electrically connected to the second driving transistor; a second capacitor electrically connected to a gate electrode of the second driving transistor; a driving voltage line which applies a driving voltage to the first driving transistor and the second driving transistor; and a first connecting member electrically connecting the gate electrode of the first driving transistor and the first capacitor, where the driving voltage line is disposed between the first connecting member and the second anode in a plan view.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: November 22, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yoo Mi Ra, Kyung-Ho Park
  • Patent number: 11496687
    Abstract: An optical compensation device includes a measurement part that measures a luminance of a reference point of a display panel displaying an image and a luminance of a neighboring point separated from the reference point to generate measurement data, a camera that photographs a surface of the display panel to generate a photographed image, and a compensation part that generates a scaling value of the neighboring point based on the measurement data of the reference point, a photographed data generated based on the photographed image of the reference point, the measurement data of the neighboring point, and a photographed data generated based on the photographed image of the neighboring point, and generates compensation data of the neighboring point based on the scaling value of the neighboring point and the photographed data of the reference point.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: November 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Ha Hong, Dong Joon Kwag, Hyung Jin Kim
  • Patent number: 11468851
    Abstract: Disclosed is an organic light-emitting diode display device including: a display panel in which pixels adjacent to each other are paired and arranged to share a single data line in pixel areas defined by gate and data lines; a gate driver configured to drive the plurality of gate lines; a data driver configured to output a data voltage to data voltage output channels on the basis of an arrangement of pixels; a data switcher configured to alternately select a data line and to electrically connect the data line with the data voltage output channel of the data driver; and a timing controller configured to control the data switcher and the gate and data drivers, thereby making it possible to drive a data driving circuit at high driving frequency and to reduce a deterioration of image quality and image distortion even in a simplified structure of the data driving circuit.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: October 11, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Yousung Nam, Youngchul Kwon
  • Patent number: 11468853
    Abstract: A gate driver includes a first stage, a second stage, a third stage and a fourth stage. The first stage includes a first clock terminal receiving a first clock signal, a second clock terminal receiving a second clock signal, a carry terminal receiving a vertical start signal and an output terminal outputting a first gate output signal. The second stage includes a first clock terminal receiving the second clock signal, a second clock terminal receiving the first clock signal, a carry terminal receiving the vertical start signal and an output terminal outputting a second gate output signal. The third stage includes a first clock terminal receiving the second clock signal, a second clock terminal receiving the first clock signal, a carry terminal receiving the first gate output signal and an output terminal outputting a third gate output signal.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: October 11, 2022
    Inventors: Jinyoung Roh, Hongsoo Kim, Sehyuk Park, Hyojin Lee, Jaekeun Lim
  • Patent number: 11468833
    Abstract: An electronic device is provided. The electronic device includes a display panel and a display driver integrated circuit configured to drive the display panel. The display driver integrated circuit is configured to determine a luminance value of the display panel if a request for a change from a current driving frequency of the display panel to a target driving frequency is received, and determine at least one intermediate driving frequency between the current driving frequency and the target driving frequency depending on the luminance value of the display panel.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: October 11, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minwoo Lee, Seungryeol Kim, Seungjin Kim, Junghyun Kim, Byungduk Yang, Gwanghui Lee, Seoyoung Lee, Juseok Lee, Woojun Jung
  • Patent number: 11455935
    Abstract: A display device according to an embodiment includes a display panel including a plurality of pixels, and an image sticking compensator configured to generate a second image data by reflecting an age data accumulated in a first image data input from an external source. The image sticking compensator generates the age data by accumulating a deterioration data generated by reflecting a frequency weight corresponding to a determined frequency of a previous frame to an image data of the previous frame after the image data of the previous frame is stored.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: September 27, 2022
    Inventors: Young Soo Sohn, Jong Man Kim, Sung Mo Yang, Seung Young Choi
  • Patent number: 11436975
    Abstract: Provided is a display panel in which a size of a driving transistor of display areas arranged apart from each other in a direction, with an opening area, in which a component is located, therebetween, is different from a size of a driving transistor of display areas other than the above display areas.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: September 6, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Youngsoo Yoon, Kyunghoon Kim, Yunkyeong In, Hyunji Cha, Minhee Choi
  • Patent number: 11436986
    Abstract: A light-emitting display device includes a display panel including a high-potential power voltage line and a low-potential power voltage line and provided with a plurality of pixels each including a driving transistor and an organic light-emitting diode, a timing controller configured to generate N (N being a natural number) sensing images depending on a size of accumulated image data by accumulating image data for each pixel, and to display the display panel of data of at least one sensing image of the N sensing images on the display panel and to obtain an amount of degradation of organic light-emitting diodes in a sensing mode, and a degradation sensing unit configured to estimate the amount of degradation of the organic light-emitting diodes by sensing an electrical physical quantity for each panel or for each region in a panel in a state in which the at least one sensing image is displayed on the display panel, and to provide the amount of degradation of the organic light-emitting diodes to the timing con
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: September 6, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Ha Zoong Kim
  • Patent number: 11430395
    Abstract: A display device and a driving circuit are discussed. According to an embodiment of the present disclosure, it is possible to reduce a compensation offset for a driving characteristic value of a display panel. In addition, according to an embodiment of the present disclosure, the number of times of detecting a dummy sensing voltage through a dummy channel is greater than the number of times of detecting a sensing voltage through a sensing channel, thereby reducing the compensation offset. Further, according to an embodiment of the present disclosure, offset noise can be reduced by accumulating a dummy sensing voltage repeatedly detected through the dummy channel.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: August 30, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventor: MooKyoung Hong
  • Patent number: 11430394
    Abstract: A display device includes a sensing circuit and a controller which selects a pixel row in a frame period. A vertical blank period of the frame period includes a sensing time in which the sensing circuit performs a sensing operation for the selected pixel row. The sensing circuit measures a first source voltage of a driving transistor of a pixel in the selected pixel row at a first time point of the sensing time, and measures a second source voltage of the driving transistor at a second time point of the sensing time. The controller calculates a threshold voltage parameter and a mobility parameter based on the first and second source voltages, predicts a saturated source voltage of the driving transistor based on the threshold voltage parameter and the mobility parameter, and calculates a threshold voltage of the driving transistor based on the saturated source voltage.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: August 30, 2022
    Assignees: SAMSUNG DISPLAY CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Jeonkyoo Kim, Soo Yeon Lee, Manseung Cho, Kyeong Soo Kang, Junhee Moon, Bonghyun You, Jin Kyu Lee
  • Patent number: 11423843
    Abstract: Provided is a scan driver of a display device, and the scan driver includes a driving circuit and a masking circuit. The driving circuit includes a control circuit, a first output circuit, and a second output circuit. The control circuit outputs a first control signal and a second control signal. The first output circuit is connected to a first output terminal which outputs a first scan signal and a first voltage terminal and operates in response to a first control signal. The second output circuit is connected to a first output terminal and a second voltage terminal and operates in response to a second control signal. The masking circuit outputs a second scan signal to a second output terminal in response to the first control signal and the second control signal and is connected to an input terminal to which a masking signal is supplied.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: August 23, 2022
    Inventors: Taehoon Kim, Sangan Kwon, Soon-Dong Kim, Hui Nam, Bonghyun You, Changnoh Yoon, Jaekeun Lim
  • Patent number: 11410609
    Abstract: Provided is an output control device for providing control signals for a pixel circuit, which includes: a first output device configured to output a first control signal for controlling writing of a data signal into the pixel circuit, a second output device configured to output a second control signal for controlling a light emitting element to emit light, and a third output device configured to output a third control signal for controlling resetting of the light emitting element. A frequency of the third control signal is higher than a frequency of the first control signal. In a first period, the second control signal is an active level signal and the third control signal is an inactive level signal. In a second period, the second control signal is an inactive level signal and the third control signal is an active level signal.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: August 9, 2022
    Assignees: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengmeng Zhang, Yana Gao, Xingyao Zhou
  • Patent number: 11409389
    Abstract: The invention relates to a method for monitoring touchscreen events (3) of a handheld device (6), wherein —a monitoring application (1) is provided, —at least one touchscreen event (3) on a display screen (61) of said handheld device (6) is detected by means of said monitoring application (1), wherein the touchscreen event (3) is directed to a foreground application (2), —event data (4) is generated for said at least one touchscreen event (3) by means of said monitoring application (1), wherein said event data (4) comprises a time stamp (41) of said at least one touchscreen event (3) and an identification (42) of said foreground application (2), —said event data (4) is stored by means of said monitoring application (1). The invention further relates to a computer program for executing the steps of the method according to the invention.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: August 9, 2022
    Inventors: Arko Ghosh, Enea Ceolini