Patents Examined by Nathan Danielsen
  • Patent number: 11727853
    Abstract: A shift register unit, a gate driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a blanking unit, a first transmission circuit and a first input-output unit. The blanking unit is configured to charge a pull-up control node in response to a compensation selection control signal and input a blanking pull-up signal to a blanking pull-up node. The first transmission circuit is electrically connected to the blanking pull-up node and the first pull-up node; and the first input-output unit includes a first leakage preventing structure, the first leakage preventing structure is electrically connected to the first pull-up node and a first leakage preventing node respectively, and the leakage preventing structure is configured to control a level of the first leakage preventing node under the control of the level of the first pull-up node to prevent the first pull-up node from leaking.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: August 15, 2023
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11721278
    Abstract: A light emitting display apparatus comprises a gate driver including stages connected with gate lines provided in a display area and a dummy stage connected with dummy gate lines provided in a non-display area, a sensing unit connected with the dummy stage connected with at least two dummy gate lines provided in the non-display area, and a controller connected with the sensing unit, wherein the dummy stage sequentially outputs at least two gate pulses, the sensing unit senses a voltage of a Q node to which a Q node signal for allowing the gate pulses to be output from the dummy stage is supplied, and the controller supplies a compensation signal based on the voltage to the stages.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: August 8, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Subin Kim, MyungHo Ban
  • Patent number: 11705056
    Abstract: An electroluminescence display apparatus includes a display panel, including a pixel including a driving element and a light emitting device, and a panel driving circuit supplying the pixel with a first data voltage for a display driving operation and a display scan signal synchronized with the first data voltage in a vertical active period succeeding a first vertical blank period and maintaining the first data voltage in the pixel during a second vertical blank period succeeding the vertical active period, wherein a length of the first vertical blank period is fixed regardless of a variation of a frame frequency, and a length of the second vertical blank period varies based on the variation of the frame frequency.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: July 18, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Dong In Noh, Young Ho Kim, Yang Seok Jeong
  • Patent number: 11703968
    Abstract: A display device includes a substrate, first electrodes, lines, pixel electrodes, a display functional layer, a common electrode, second electrodes, and a controller. The first electrodes are opposed to the second electrodes with a space therebetween, and an insulating layer is provided between the common electrode and the first and second electrodes. During the display periods, in response to a control signal from the controller, the pixel electrodes are supplied with a pixel signal through the lines, and the common electrode is supplied with a common signal. During the sensing period, in response to the control signal from the controller, the lines are supplied with a first drive signal to generate a magnetic field. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between themselves and the second electrodes in response to the control signal from the controller, synchronously or asynchronously with the display periods.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: July 18, 2023
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Hiroshi Mizuhashi, Tadayoshi Katsuta
  • Patent number: 11694609
    Abstract: Provided are a display panel and a display device. The display panel includes a first light-emitting element, a second light-emitting element, a first driver circuit and a second driver circuit. The first driver circuit is electrically connected to the first light-emitting element and configured to provide a first drive current to the first light-emitting element to control the first light-emitting element to emit light, and the second driver circuit is electrically connected to the second light-emitting element and configured to provide a second drive current to the second light-emitting element to control the second light-emitting element to emit light. At least at a maximum grayscale, an average current value of the first drive current is greater than an average current value of the second drive current.
    Type: Grant
    Filed: April 17, 2022
    Date of Patent: July 4, 2023
    Assignee: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
    Inventor: Yingteng Zhai
  • Patent number: 11682336
    Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller processes input image data according to a variable input frequency and generates a data signal having a varied frame length. The data driver converts the data signal into a data voltage and outputs the data voltage to the display panel. The driving controller determines a variable frequency mode and generates an asymmetric data signal including a positive data signal and a negative data signal which are asymmetric with respect to a common voltage for a same grayscale value in the variable frequency mode.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: June 20, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Hyeong An, Hoi Sik Moon, Yoon Gu Kim, Jin Pil Kim, Jae Sung Bae, Nam Jae Lim, Ik Hyun Ahn, Seung Young Choi
  • Patent number: 11682342
    Abstract: A light emitting display apparatus, which can sense a characteristic change of a transistor provided in a stage and supply a driving voltage, and which can compensate for the characteristic change, includes stages for supplying gate signals to gate lines provided in the light emitting display panel, and a controller for controlling a magnitude of a driving voltage to be transmitted to the stages by using sensing data received from the stages.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: June 20, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: MyungHo Ban, Subin Kim
  • Patent number: 11676521
    Abstract: Provided is a display panel. The display panel includes multiple scanning lines, a gate driver circuit, and a timing controller. The timing controller is configured to: receive multiple data enable signals, generate a gate control signal, and provide the gate control signal for the gate driver circuit. The gate control signal includes a start signal, a first clock signal and a second clock signal. The multiple data enable signals are only within the active cycle. The timing controller is configured to generate a rising edge of the start signal within the vertical blanking cycle of the (N?1)th frame cycle. Alternatively, the timing controller is configured to generate a rising edge and a falling edge of the start signal within a time interval formed by a rising edge and a falling edge of a first data enable signal in the Nth frame cycle.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: June 13, 2023
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Sijian Luo, Changzhi Wu, Yumin Xu
  • Patent number: 11669211
    Abstract: One aspect of the present invention provides an electroconductive film 10 comprising a light-transmitting base material 11, a plurality of light-transmitting electroconductive parts 12 provided on one surface 11A of the light-transmitting base material 11, and a nonconductive part 13 located between the electroconductive parts 12, wherein each of the electroconductive parts 12 contains a light-transmitting resin 15 and an electroconductive fiber 16 incorporated in the light-transmitting resin 15; the nonconductive part 13 contains a light-transmitting resin 15; and the surface 13A of the nonconductive part 13 has an arithmetic average roughness of 3 nm or more.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: June 6, 2023
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shoichiro Ogumi, Eiji Ooishi, Yoshimasa Ogawa, Yuji Shimizu, Ryota Kitayama
  • Patent number: 11670221
    Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write device, a drive device, a compensation device, and a bias adjustment device. The drive device includes a drive transistor. The data write device connected to a source of the drive transistor. The compensation device configured to compensate for a threshold voltage of the drive transistor. The bias adjustment device connected between the source or a drain of the drive transistor and a bias adjustment signal terminal. The working process of the pixel circuit includes bias adjustment stage. In bias adjustment stage, the bias adjustment device is turned on to provide bias adjustment signal to the source or the drain of the transistor. The drive transistor is PMOS, and the bias adjustment signal is high-level signal; or, the drive transistor is NMOS, and the bias adjustment signal is low-level signal.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: June 6, 2023
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Jieliang Li, Ping An
  • Patent number: 11670217
    Abstract: A display apparatus includes a plurality of display panels, a power voltage generator and a driving controller. The power voltage generator generates power voltages of the plurality of display panels. The driving controller receives the power voltages from feedback points of the plurality of display panels and generates a control signal and controls levels of the power voltages based on fed-back power voltages from the feedback points of the plurality of display panels. The power voltage generator adjusts the levels of the power voltages and generates compensation power voltages based on the control signal.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: June 6, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yunki Baek, Manseung Cho
  • Patent number: 11663956
    Abstract: A pixel includes: a light emitting element; a first transistor which drives the light emitting element; a second transistor electrically connected between a gate node of the first transistor and a data line; a third transistor electrically connected between a first node of the first transistor and an initialization voltage line; and a storage capacitor electrically connected between the gate node and the first node of the first transistor. Here, upon an operation in a variable frame mode, an initialization voltage is applied to the initialization voltage line, and the initialization voltage has a first voltage level. In addition, in a data writing period during which the storage capacitor is charged with an electric charge, the initialization voltage further includes a pulse voltage such that the initialization voltage has a second voltage level that is greater than the first voltage level.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: May 30, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chang-Soo Lee, Boyong Chung
  • Patent number: 11663957
    Abstract: A display panel and a display device are provided. The display panel includes a pixel circuit, a driving circuit configured to provide a control signal for the pixel circuit, and a clock signal line configured to provide a clock signal for the driving circuit. A data refresh period of the pixel circuit includes a data writing stage and a holding stage, the holding stage includes N stage arranged in sequence and N?1. When the pixel circuit is operated in the data writing stage, the clock pulse frequency of the clock signal is a first frequency F1; when the pixel circuit is operated in the holding stage, in at least one of the N stages, the clock pulse frequency of the clock signal is a second frequency F2; and F1>F2>0.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: May 30, 2023
    Assignee: XIAMEN TIANMA DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Wanming Huang, Jieliang Li, Yuheng Zhang
  • Patent number: 11651716
    Abstract: A display device includes: an image display having at least one first display area and a second display area; a memory configured to store image data; and a timing controller configured to store first image data for the first display area in the memory after first image data for the first display area and the second display area is received from a host device, wherein the timing controller is configured to control the image display unit so as to display a first image in the first display area by loading the first image data for the first display area from the memory and to display a preset second image in the second display area.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: May 16, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong Ho Bae, Jong Gil Kim, Moon Sang Hwang
  • Patent number: 11651727
    Abstract: A light emitting device of the present disclosure includes: a circuit board; a plurality of substrates including a first substrate and a second substrate, wherein the first substrate is disposed on the circuit board, and the second substrate is disposed on the circuit board and overlapped with the first substrate; a plurality of light emitting units disposed on the first substrate; a plurality of pixel driving circuits electrically connected to the plurality of light emitting units; and a plurality of gate driving circuits electrically connected to the plurality of pixel driving circuits, wherein at least a part of the plurality of pixel driving circuits or at least a part of the plurality of gate driving circuits are disposed on the second substrate.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: May 16, 2023
    Assignee: INNOLUX CORPORATION
    Inventors: Yi-Hua Hsu, Ker-Yih Kao, Ming-Chun Tseng, Mu-Fan Chang, Wen-Lin Huang
  • Patent number: 11645971
    Abstract: A light-emitting diode (LED) package includes a first LED pixel including a plurality of first LED chips and a first pixel driving integrated circuit to drive the first LED chips according to an active matrix (AM) mode using entirety of a first frame period, wherein the first pixel driving integrated circuit includes a first storage area configured to store first frame data of each first LED chip, a second storage area configured to store duty ratio compensation data of each first LED chip, a pulse width modulation (PWM) data calculator configured to perform an arithmetic operation on the first frame data and the duty ratio compensation data to generate PWM data, and a PWM data generator configured to adjust an emission duty ratio based on the PWM data.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: May 9, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Kyoungjun Kim
  • Patent number: 11644869
    Abstract: To increase the detection sensitivity of a touch panel, provide a thin touch panel, provide a foldable touch panel, or provide a lightweight touch panel. A display element and a capacitor forming a touch sensor are provided between a pair of substrates. Preferably, a pair of conductive layers forming the capacitor each have an opening. The opening and the display element are provided to overlap each other. A light-blocking layer is provided between a substrate on the display surface side and the pair of conductive layers forming the capacitor.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: May 9, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koji Kusunoki, Hiroyuki Miyake, Kazunori Watanabe
  • Patent number: 11645964
    Abstract: A display device includes a display panel. The display panel includes a pixel including a light emitting element. A compensator calculates a current stress of the light emitting element based on input grayscale values sequentially provided for the pixel during a specific time and generates a first output grayscale value by compensating for a first input grayscale value provided at a current time point based on the current stress. A driver generates a data signal based on the first output grayscale value and supplies the data signal to the pixel. The compensator sets the first output grayscale value to be less than the first input grayscale value in case that the input grayscale values are greater than a reference grayscale value.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: May 9, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Dae Gwang Jang
  • Patent number: 11645973
    Abstract: An LED display panel contains an LED array having a plurality of LED pixels, a plurality of scan switches, and a plurality of LED columns. The anode of each LED pixel in each LED column is connected to a common anode node and the common anode node is connected to an output of a current source, while the cathode of each LED pixel in each LED column is switchably connected to a current sink via one of the plurality of scan switches. The common anode node is connected to a first input of a comparator circuit and is switchably connected to an anode voltage source. The second input of the comparator circuit is connected to a reference voltage source and an output of the comparator circuit signally controls a switch member that switchably connects the common anode node to the current sink.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: May 9, 2023
    Assignee: SCT LTD.
    Inventors: Eric Li, Yi Zhang, Shang-Kuan Tang, Shean-Yih Chiou
  • Patent number: 11630547
    Abstract: A conductive member for a touch panel has a first electrode formed on a substrate and extending in parallel to a first direction, in which the first electrode is electrically connected to a plurality of first mesh cells constituted by a fine metal wire, the fine metal wire is not parallel or perpendicular with respect to a first direction, the first electrode has at least one auxiliary fine metal wire that extends in a first direction, intersects the fine metal wire, is electrically connected to the fine metal wire, and is not parallel to the fine metal wire, and an electrode width Wa of the first electrode in a second direction orthogonal to a first direction and a first mesh pitch P1 of the first mesh cell in a second direction satisfy Wa?2.5P1.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: April 18, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Tadashi Kuriki, Masaya Nakayama, Makoto Suto