Patents Examined by David Tung
  • Patent number: 11513634
    Abstract: The present disclosure discloses an electromagnetic pen display, which includes a display module, a light emitting module and an electromagnetic input module. The display module includes a liquid crystal display panel configured to display image frame and a dynamic dimming pad. The dynamic dimming pad being configured to generate a dynamic dimming signal based on information of the display image frame of the liquid crystal display panel. The light emitting module includes a light source driving board and a plurality of light sources. The light sources being correspondingly electrically connected to the light source driving board, the light source driving board being configured to correspondingly dynamically driving a light emission luminance of the plurality of light sources in response to receiving a dynamic dimming signal from the dynamic dimming pad. The electromagnetic input module is configured to selectively receive a write input signal.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: November 29, 2022
    Assignee: SHENZHEN HUION ANIMATION TECHNOLOGY CO., LTD.
    Inventor: Zhouhong Wang
  • Patent number: 11501706
    Abstract: A display panel and a display apparatus, in which a particular color is prevented from being emphasized and displayed in a display area even when the display panel passes testing. The display panel includes: a substrate including a first area and a second area in which first connection nodes and second connection nodes are arranged, the first and second areas being separate from each other; first data lines on the first area; second data lines on the second area and respectively connected to second connection nodes; first connection lines respectively connecting the first data lines to the first connection nodes; a first voltage line; first transistors respectively connected between the first connection nodes and the first voltage line; second transistors respectively connected between the second connection nodes and the first voltage line; and a first gate line connected to gates of the first transistors and gates of the second transistors.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: November 15, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nackhyeon Keum, Jihyun Ka
  • Patent number: 11494023
    Abstract: A processing system includes sensor circuitry and processing circuitry. The sensor circuitry is configured to, using the sensor electrodes, obtain capacitive measurements of a sensing region, and obtain a resistance measurement of the sensing region. The processing circuitry is coupled to the sensor circuitry. The processing circuitry is configured to determine a location of an input object using the capacitive measurements of the sensing region; and determine a force value based on the resistance measurement and the location of the input object. Determining the force value mitigates a temperature variation of the sensing region affecting the resistance measurement. The processing circuitry is further configured to report the force value.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: November 8, 2022
    Assignee: Synaptics Incorporated
    Inventor: Tom Vandermeijden
  • Patent number: 11495179
    Abstract: An array substrate has a display area and a peripheral area located outside the display area. The display area includes two first sides that are substantially parallel and arc sides connected to ends of the first sides. The array substrate includes at least one gate driving circuit. Each gate driving circuit includes GOA units sequentially distributed along each arc side in at least one arc side and active GOA units sequentially distributed along a first side connected to the arc side. The GOA units includes at least one active GOA unit and at least one dummy GOA unit. Each active GOA unit is configured to provide a driving signal to at least one sub-pixel. A distance between two adjacent GOA units in the GOA units is approximately same as a distance between two adjacent active GOA units in the active GOA units.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: November 8, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Xueguang Hao, Yong Qiao, Xinyin Wu
  • Patent number: 11488555
    Abstract: This application discloses a display panel, a driving method thereof and a display apparatus. The display panel includes a substrate, the substrate being provided with a plurality of data lines, a plurality of gate lines, and a plurality of pixel units; and a gate driver chip, where each pixel unit includes subpixels of different colors; the gate driver chip outputs gate enabling signals to the gate lines to turn on the pixel units; and each row of pixel units includes a plurality of pixel groups, each pixel group includes a first column of subpixels and a second column of subpixels and a voltage of a gate enabling signal of the first column of subpixels is greater than that of a gate enabling signal corresponding to the second column of subpixels.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 1, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Chuan Wu
  • Patent number: 11488552
    Abstract: A display device is disclosed. The display device comprises: a display panel; a memory storing information on a compensation value according to a change in gray scale of an input image, which is preconfigured according to a driving frequency of the display panel; a timing controller for controlling the display panel to display a current frame of the input image, on the basis of information stored in the memory; and a processor for acquiring a target gray scale value of the current frame on the basis of a frequency of the current frame, acquiring a compensation value corresponding to the acquired target gray scale value, and controlling the timing controller to display the current frame on the basis of the acquired compensation value.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: November 1, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyunjeong Ryu, Jungmin Ku, Sunghwan Jang, Hwarang Pi
  • Patent number: 11475856
    Abstract: The present application discloses a driving circuit, a driving method, and a display panel. The driving circuit includes: a plurality of pixels, each pixel including a first sub-pixel and a second sub-pixel; and a switching circuit, configured to communicate one or both of the first sub-pixel and the second sub-pixel with a scan line and a data line.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: October 18, 2022
    Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventor: Xiao Yu Huang
  • Patent number: 11443707
    Abstract: A liquid crystal display device includes: a pixel array unit in which pixels including a liquid crystal cell are arranged in a matrix; scan lines; common wiring; and data lines, in which each of the pixels includes a pixel transistor connecting the data line and the pixel electrode, a conductive state/a non-conductive state of the pixel transistor is controlled by a scan signal voltage applied to the scan line, a signal voltage whose polarity is inverted in regular cycles is supplied to the common wiring, and at least one of a pre-charge voltage supplied to the data line prior to writing of a video signal voltage or a scan signal voltage supplied to the scan line when no pixel is selected is supplied so as to vary in accordance with the position at which the pixels are selected row by row in the pixel array unit.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: September 13, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Hiroshi Kobayashi
  • Patent number: 11416103
    Abstract: Implementations of a proximity detection device according to the present disclosure include a plurality of light emitting elements and a plurality of light receiving elements arranged in a lower portion of a touch panel display. The proximity detection device detects an object that is in proximity by reflected light received by the light receiving elements when irradiation light from the light emitting elements is reflected by the object. Implementations of a proximity detection device includes a drive circuit sequentially driving the plurality of light emitting elements, a measurement circuit measuring detection levels of the light receiving elements when the plurality of light emitting elements sequentially emit light, respectively, and a control unit having a function to estimate a position in the horizontal direction from a plurality of measurement results and correct the estimated position.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: August 16, 2022
    Assignee: ALPS ALPINE CO., LTD.
    Inventor: Teiichi Ichikawa
  • Patent number: 11417289
    Abstract: The invention provides a driving circuit of a display panel and an operation method thereof. The driving circuit includes a calculation circuit and an edge processing circuit. The calculation circuit converts original image frame data into first image frame data for driving a first pixel array layer and second image frame data for driving a second pixel array layer. The edge processing circuit converts the second image frame data into third image frame data. The edge processing circuit performs an edge detection on a current pixel in the second image frame data to determine whether the current pixel belongs to an image edge. The edge processing circuit determines whether to adjust a gray level of an adjacent pixel in the second image frame data as the gray level of the adjacent pixel in the third image frame data according to a result of the edge detection.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: August 16, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Tung-Ying Wu
  • Patent number: 11404017
    Abstract: An electro-optical device is provided and includes first signal lines extending in first direction on substrate; second signal lines extending in second direction on substrate, second direction intersecting first direction; pixel area in which pixel electrodes are disposed; outer peripheral edge of pixel area having curved or bent portions; first and second circuit blocks arranged along curved or bent portions, each of first and second circuit blocks including at least two unit circuits, wherein second circuit block is arranged adjacent to first circuit block with gap therebetween in first direction, first circuit block has first upper part and first lower part that define width of first circuit block in second direction, second circuit block has second upper part and second lower part that define width of second circuit block in second direction, and first upper part is arranged between second upper part and second lower part in second direction.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: August 2, 2022
    Assignee: Japan Display Inc.
    Inventors: Katsuya Anzai, Hideki Kawada, Hiroshi Matsuda, Yukitada Iwasaki
  • Patent number: 11386862
    Abstract: The present application discloses a driving method, a display panel and a driving circuit. The driving method is applied to the display panel, and includes a step of outputting a gate driving signal to a corresponding gate line of the display panel. A signal period of the gate driving signal includes a hold time, an open time, and a first pull-down time adjacent to the open time. The gate driving signal is in a first low level within the hold time, in a high level at the open time, and in a second low level within the first pull-down time, where the second low level is lower than the first low level.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: July 12, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Jianfeng Shan
  • Patent number: 11386859
    Abstract: A polarity compensation device and a polarity compensation method are provided. The polarity compensation device includes a variance calculation circuit and a compensation calculation circuit. The variance calculation circuit calculates a difference value between current sub-pixel data and previous sub-pixel data in the same frame period, wherein the current sub-pixel data and the previous sub-pixel data belong to the same data line of a display panel. The compensation calculation circuit converts the difference value into a function value. The compensation calculation circuit decides to increase or decrease the current sub-pixel data by the function value according to a polarity corresponding to the same frame period, so as to generate compensated sub-pixel data.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: July 12, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Tung-Ying Wu
  • Patent number: 11355081
    Abstract: A gate driver on array (GOA) circuit, a display panel and a display device are provided. The GOA circuit includes m cascaded GOA units. An nth-stage GOA unit includes a second feedback module. The second feedback module, electrically connected to the second node of the nth-stage GOA unit, a first node of the (n?1)th-stage GOA unit, the clock signal of the (n+1)th-stage GOA unit, a gate driving signal of the nth-stage GOA unit and the constant low voltage signal, to pull down voltage applied on a second node of the nth-stage GOA unit. The one-way feedback could achieve the linear design more easily, raise the circuit stability, and thus the GOA circuit could be integrated in the display panel more easily to achieve the design of placing the GOA circuit in the active area.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: June 7, 2022
    Inventor: Chao Tian
  • Patent number: 11353977
    Abstract: According to an aspect, a display device with a sensor includes: a substrate including a display region and a peripheral region on a periphery of the display region; detection electrodes arranged in a row-column configuration in the display region; and detection lines coupled to the respective detection electrodes. A shape of the substrate in a plan view includes a curve of a curved portion. The detection electrodes include a first electrode and a second electrode having a shape different from that of the first electrode in a plan view. The second electrode is juxtaposed with the curved portion. The detection lines each include a first line coupled to the first electrode and a second line coupled to the second electrode. The second line passes from the display region across the peripheral region and extends to a position overlapping with the second electrode in a plan view.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: June 7, 2022
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Abe, Yoshinori Aoki, Kazune Matsumura, Masateru Morimoto
  • Patent number: 11335295
    Abstract: A processing system includes a timing controller and source driver circuitry. The timing controller is configured to stop scanning of a plurality of gate lines of a display panel in response to a detection of a communication failure between the processing system and a controller. The source driver circuitry is configured to update a plurality of display elements of the display panel to cause a black display in response to expiration of a time limit after the detection of the communication failure. The timing controller may be further configured to resume the scanning of the plurality of gate lines in response to the expiration of the time limit.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: May 17, 2022
    Assignee: Synaptics Incorporated
    Inventors: Tomohiro Hirakawa, Takayuki Noto, Masaaki Shiomura, Hirokazu Hatayama, Yoriaki Miyoshi, Keiichi Yoshida, Hiroshi Shimura
  • Patent number: 11335282
    Abstract: Provided are a driving method for a display panel and a driving device thereof. The driving method includes: dividing pixels into bright pixels and dark pixels that are in a cross arrangement; converting driving signals into bright region driving signals and dark region driving signals; and driving the bright pixels and the dark pixels respectively by using the bright region driving signals and the dark region driving signals.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: May 17, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Chia-Hang Lee
  • Patent number: 11328657
    Abstract: Display panels and display devices are provided. The display panel includes a non-display area, a display area surrounding the non-display area, and a plurality of first signal wirings arranged along a first direction. The non-display area includes a first non-display area between adjacent through-holes of the at least two through-holes, a second non-display area located between the at least two through-holes and the display area, and at least two through-holes arranged along the first direction. The plurality of first signal wirings includes a plurality of first sub-signal wirings and a plurality of first cross-lines. Each end of the first cross-line is connected to one first sub-signal wiring; a number of first cross-lines of the plurality of first cross-lines in the first non-display area is M; a number of first cross-lines of the plurality of first cross-lines in the second non-display area is N; and M is greater than N.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: May 10, 2022
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Rili Fei, Ruiyuan Zhou, Zhiqiang Xia, Yingjie Chen
  • Patent number: 11315497
    Abstract: A gate driving circuit and an image display device including the gate driving circuit are provided. In some embodiments of the present disclosure, the gate driving circuit includes a plurality of stages configured to sequentially and repeatedly output a plurality of scan pulses having different pulse widths in response to a gate control signal applied from a timing controller and the plurality of stages sequentially generate the plurality of scan pulses having different pulse widths and phase-delayed in response to three-phase clock pulses among the gate control signals and sequentially supply the plurality of scan pulses to gate lines of a display panel to selectively adjust a light emission period or a color display period for each red pixel, green pixel, and blue pixel, thereby improving image quality.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: April 26, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jaesung Yu, Chungsik Kong, Sewan Lee, Juhnsuk Yoo, Jungsoo Park, Mihee Shin
  • Patent number: 11314349
    Abstract: Embodiments of the present disclosure relate to a touch display device, and more particularly, to a touch display device which can have a small bezel size even when touch routing lines connecting a touch sensor to a touch sensing circuit are disposed in a non-display area and which can improve touch sensitivity by preventing or minimizing the formation of parasitic capacitance that can be caused by the touch routing lines.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: April 26, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: HwiDeuk Lee, Yangsik Lee