Patents Examined by Sejoon Ahn
  • Patent number: 11600213
    Abstract: A display device includes a level shifter and a gate driving circuit that can reduce differences in characteristics among gate signals to improve image quality by controlling a signal waveform of a first clock signal of the m number of clock signals different from a signal waveform of an m-th clock signal when m number of gate signals is output by using m number of clock signals.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: March 7, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sujin Hwang, MiYoung Son, EungKyu Kim, HongJae Shin, MinKyu Chang
  • Patent number: 11594165
    Abstract: The disclosure provides a transparent display device including an exposed region and a non-exposed region. The non-exposed region is adapted for being hidden by a frame. The transparent display device includes a plurality of pixels and a driving element. The pixels are disposed in the exposed region. The driving element is adapted for driving the pixels, the driving element is disposed in the non-exposed region, and the non-exposed region partially surrounds the exposed region.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: February 28, 2023
    Assignee: Innolux Corporation
    Inventors: Yu-Chia Huang, Yuan-Lin Wu, Tsung-Han Tsai, Kuan-Feng Lee
  • Patent number: 11587487
    Abstract: A display driving circuit includes a clock signal generator which generates a clock signal at a frequency in response to a frequency control signal, a frequency variation determiner which adaptively changes a frequency variation of the clock signal, based on a magnitude of a deviation between the frequency of the clock signal and a target frequency calculated based on a reference clock signal supplied from the outside, and a frequency controller which generates the frequency control signal which updates the frequency of the clock signal, based on the frequency variation, and provides the frequency control signal to the clock signal generator.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: February 21, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Chang Kim, Se Byung Chae
  • Patent number: 11588479
    Abstract: Provided are a spread spectrum clock generator and a spread spectrum clock generation method, a pulse pattern generator and a pulse pattern generation method, and an error rate measuring device and an error rate measuring method capable of improving usability when adjusting a waveform of a modulation signal during training. A setting screen 60 includes a 0-th frequency shift input unit 71 for arbitrarily setting a frequency shift of a waveform of a modulation signal in a plurality of time sections, a first frequency shift input unit 72, a second frequency shift input unit 73, a third frequency shift input unit 74, and a modulation selection unit 67 for switching a waveform pattern of the modulation signal from a first pattern to a second pattern.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: February 21, 2023
    Assignee: ANRITSU CORPORATION
    Inventor: Tatsuya Iwai
  • Patent number: 11586329
    Abstract: A flexible touch panel including a flexible substrate bent in a first direction, and a touch sensor unit disposed on the flexible substrate, the touch sensor unit including a bridge extending in a second direction intersecting the first direction.
    Type: Grant
    Filed: May 30, 2022
    Date of Patent: February 21, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyung Chul Kim, Jung Mok Park
  • Patent number: 11582868
    Abstract: A printed wiring line formed on a substrate connects two different points on the substrate which are connectable by another printed wiring line with a shape of a straight-line segment and has a shape corresponding to at least one of: 1) a shape with no linear part parallel to the straight-line segment; 2) a shape with line segments connected in series, each line segment having a shape with no linear part parallel to the straight-line segment; 3) a shape having a part parallel to the straight-line segment and a part not parallel to the straight-line segment, length of the part parallel to the straight-line segment being not more than length of the straight-line segment; and 4) a shape in which line segments are connected in series, each line segment having a shape having a part parallel to the straight-line segment and a part not parallel to the straight-line segment.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: February 14, 2023
    Assignee: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventors: Yutaro Kogawa, Mitsunori Sato, Yutaka Takezawa, Akitoshi Sakaue, Mitsutoshi Naito
  • Patent number: 11574575
    Abstract: Provided are a shift register unit, a shift register, a display panel and a driving method thereof. The shift register unit includes: an input circuit electrically coupled to an input terminal, a first voltage terminal and a pull-up node; an output circuit electrically coupled to the pull-up node, a first clock terminal, a first scan control terminal, a first output terminal and a second output terminal; and a scan control circuit electrically coupled to the second output terminal, a second voltage terminal and a second scan control terminal. The input circuit is configured to write a first voltage provided by the first voltage terminal into the pull-up node in response to a start signal inputted to the input terminal. The output circuit is configured to output a first clock signal from the first clock terminal via the first output terminal, when the pull-up node is at the first voltage.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: February 7, 2023
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Shaolei Zong, Jigang Sun, Rui Liu, Wei Sun, Xin Duan, Junwei Zhang
  • Patent number: 11574576
    Abstract: Dynamic refresh rate (DRR) switching is used to dynamically update a refresh rate of content presented on an interface. When a first application and a second application are presented on a user interface at a first refresh rate; a request may be received to temporarily boost the first refresh rate to a second, higher, refresh rate. DRR switching is initiated as the first refresh rate is temporarily boosted to a second refresh rate. Applications that are opted in to the second refresh rate receive signals to refresh content at the second refresh rate, while applications that are not opted in to the second refresh rate receive signals to refresh content at a virtualized refresh rate that matches the first refresh rate. Thus, the first application refreshes content at the first refresh rate and the second application refreshes content at the second, higher refresh rate, providing a smooth user experience without unnecessarily utilizing power consumption.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: February 7, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Michael Paul Erich Von Hippel, Ana Marta Amaral De Carvalho, Hrushit Kamal Parikh, Reiner Fink, Steve Michel Pronovost, Zhigang Xu, Zachary Scott Northrup, Leonardo E. Blanco
  • Patent number: 11568778
    Abstract: According to the embodiments of the present disclosure, there is provided gate driving circuit comprising 2N stages of shift registers, the 2N stages of shift registers comprising N first shift registers arranged alternately with N second shift registers, wherein the N first shift registers are cascaded-coupled as N stages of first shift registers, and are configured to generate N first output signals under control of K first clock signals; and wherein the N second shift registers are cascaded-coupled as N stages of second shift registers, and are configured to generate N second output signals under a control of K second clock signals, wherein K and N are both integers greater than 1, and K?N.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: January 31, 2023
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yingmeng Miao, Changchen Liu, Zhihua Sun, Yanping Liao, Seungmin Lee, Xibin Shao, Cong Wang, Feng Qu
  • Patent number: 11567612
    Abstract: A display module includes: a display panel; and an input sensing circuit disposed thereon, the input sensing circuit including: a first sensor group including a plurality of first sensors arranged in a first direction; a plurality of first connection portions electrically connecting two adjacent first sensors of the plurality of first sensors, respectively; a second sensor group including a plurality of second sensors arranged in a second direction crossing the first direction; a plurality of second connection portions electrically connecting two adjacent second sensors of the plurality of second sensors, respectively; a first signal line electrically connected to one first sensor of the plurality of first sensors; a first measuring line electrically connected to the one first sensor among the plurality of first sensors and spaced apart from the first signal line; and a second measuring line electrically connected to another first sensor among the plurality of first sensors.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: January 31, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Miyoung Kim, Janghui Kim, ChangBum Kim, Jungmok Park, ByeongKyu Jeon
  • Patent number: 11562676
    Abstract: A display panel and a display device are provided. The display panel includes a driving circuit. The driving circuit includes N-level shift registers cascaded with each other, where N is greater than or equal to two. A shift register includes: a first control unit configured to receive an input signal and control a signal of a first node; a second control unit configured to receive a first voltage signal and control a signal of a second node; a third control unit configured to receive the first voltage signal and generate an output signal, or receive a second voltage signal and generate an output signal in response to a signal of a third node connected to the first node; and a fourth control unit configured to receive the second voltage signal and control the signal of the first node. The first and second voltage signals are high-level and low-level signals, respectively.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: January 24, 2023
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Qingjun Lai, Yihua Zhu, Ping An
  • Patent number: 11557241
    Abstract: A display device includes a display panel including data lines configured to receive an image signal, gate lines configured to receive a scan signal, and gate connection lines configured to transmit the scan signal to the gate lines; and a multi-chip film package including, on a film, a first gate integrated circuit (IC) configured to transmit a first scan signal to the gate connection lines through first gate output lines, a second gate IC configured to transmit a second scan signal to the gate connection lines through second gate output lines, and a source IC configured to transmit the image signal to the data lines through source output lines. Each of the first gate output lines is between two adjacent source output lines, and each of the second gate output lines is between two adjacent source output lines.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: January 17, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chulho Choi, Yongjoo Song
  • Patent number: 11551597
    Abstract: An electronic device including a substrate, a plurality of first signal lines, and a plurality of second signal lines is provided. The first signal lines are disposed on the substrate. Each of the first signal lines includes a first intersecting section and a first extending section. The first intersecting section each has a constant extending direction. The first intersecting section is connected to the first extending section, while the first intersecting section and the first extending section have different extending directions. The second signal lines are disposed on the substrate. Each of the second signal lines includes a second intersecting section. The second intersecting section each has a constant extending direction. The second signal lines intersect with the first signal lines to form a plurality of intersections on each of the first signal lines, and the intersections are located on the first intersecting sections.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: January 10, 2023
    Assignee: E Ink Holdings Inc.
    Inventors: Chia-Chi Chang, Chih-Chun Chen, Chi-Ming Wu, Yi-Ching Wang, Jia-Hung Chen, Shu-Fen Tsai
  • Patent number: 11538387
    Abstract: Disclosed is a power module which includes a first power module that generates a first output current based on a first input voltage, a second power module that generates a second output voltage based on a second input voltage, generates a second output current based on the second output voltage, and generates the second output current when a level of the first input voltage is smaller than a level of a reference voltage, and a voltage controller that generates a feedback signal for regulating at least one of the level of the first input voltage and a level of the second input voltage based on current information about a current flowing in the power module.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: December 27, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dongyeol Lee, Dongwook Suh, Wangsuk Sung
  • Patent number: 11527189
    Abstract: A method to generate pixel control signal more rapidly and with less overhead is disclosed. The method generates pixel control signals for a block of pixels having a first pixel and a second pixel. A base control signal that is shared by the block of pixels is generated. A first sharpening control signal for the first pixel is generated and a second sharpening control signal for the second pixel is generated. The first pixel control signal is generated using the first sharpening signal and the base control signal. The second pixel control signal is generated using the second sharpening signal and the base control signal. The base control signal is stored in a first memory cell; the first sharpener control signal is stored in a second memory cell; and the second sharpener control signal is stored in a third memory cell.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: December 13, 2022
    Assignee: Syndiant, Inc. & XDMicro(Zhongshan) Optoelectronics Semiconductor Co. LTD
    Inventor: Craig Michael Waller
  • Patent number: 11521534
    Abstract: A display driving integrated circuit includes a common voltage buffer configured to provide a common voltage to a display panel and when a line outputting the common voltage and a gate line are short-circuited, apply a first current to the gate line or receive a second current from the gate line; a current generator configured to sum currents respectively corresponding to the first current and the second current and output an output current obtained by the summing; and a current detector configured to convert the output current into an output voltage and output a high or low signal based on a result of comparing the output voltage with a preset voltage.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: December 6, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shih Chiao Huang, Jinwoo Kim, Tao-Jung Hung, Chulho Choi, Hajoon Shin, Myungho Seo, Yongjoo Song, Shih-Hsiung Kuo, Chui-Hsun Chiu, Jia Wei Chen, Chao Hsuan Liu, Yu-Wen Chiou
  • Patent number: 11508280
    Abstract: An operational amplifier has a first input terminal and an output terminal connected to a second input terminal of the operational amplifier, and output nodes connected to the source lines of a display panel. During a failure inspection mode, the connection between the output node and the output terminal of the operational amplifier included in another output circuit among one output circuit and the other output circuit is disconnected and the output node instead of the output terminal is connected to the second input terminal of the operational amplifier. A pair of source lines connected to the output nodes of the one output circuit and the other output circuit are linked to each other, and signals attained by acquiring and binarizing voltages outputted from the operational amplifier in the other output circuit as a monitor voltage at different timings are acquired as first and second failure determination signals.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: November 22, 2022
    Assignee: LAPIS TECHNOLOGY CO., LTD.
    Inventor: Hiroyoshi Ichikura
  • Patent number: 11507213
    Abstract: A touch display device includes a substrate, a plurality of scan lines, a plurality of thin film transistors and a plurality of touch electrodes. The scan lines and the thin film transistors are disposed on the substrate, and each of the thin film transistors is electrically connected to a corresponding scan line of the scan lines. The scan lines include a first scan line. The touch electrodes are disposed on the substrate, the touch electrodes include a first touch electrode and a second touch electrode, the first touch electrode is adjacent to the second touch electrode, the first scan line is disposed between the first touch electrode and the second touch electrode, and the first scan line is partially covered by the first touch electrode.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: November 22, 2022
    Assignee: HANNSTAR DISPLAY CORPORATION
    Inventors: I-Hsuan Chen, Mu-Kai Kang, Cheng-Yen Yeh
  • Patent number: 11501677
    Abstract: The present application provides a display module, a driving method thereof, and a display device. The display module comprises: a display panel comprising at least two display areas; a detection module configured to detect a fold state of the display panel; and a driving chip module comprising one-to-one correspondence with the display area and drive its display drive chip; a gating module configured to control connection or disconnection of a line where the gating module is located; a control platform configured to output control instructions. Alleviate the problem of excessive power consumption in existing folding display devices.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: November 15, 2022
    Inventors: Zengjian Jin, Fuchih Chang, Qibing Dai
  • Patent number: 11493767
    Abstract: The disclosed projector device may include (1) a first monochromatic emitter array having a plurality of emitters of a first color disposed in a two-dimensional configuration and (2) a second monochromatic emitter array having a plurality of emitters of a second color disposed in a two-dimensional configuration. The first and second monochromatic emitter arrays may be configured to emit images of the first and second colors into a waveguide configuration, and the first color may be different than the second color. Associated display systems and methods are also provided.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: November 8, 2022
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Nicholas Daniel Trail, James Ronald Bonar, Gareth Valentine