Patents Examined by Kwin Xie
  • Patent number: 10698526
    Abstract: A compensation circuit, a gate driving unit, a gate driving circuit, driving methods thereof and a display device are provided. The compensation circuit includes: a pull-up node voltage control sub-circuit configured to control a first voltage input end to output a first voltage to a pull-up node voltage output end under the control of a control node; and a control node control sub-circuit configured to control a voltage compensation clock signal input end to input a voltage compensation clock signal to the control node under the control of a pull-up input end, control a second voltage input end to input a second voltage to the control node under the control of a voltage compensation resetting end, and control a touch ending signal input end to input a touch ending signal to the control node under the control of a pull-up node voltage output end.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 30, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Feng Li, Liang Zhang, Yu Ma, Qi Sang
  • Patent number: 10691269
    Abstract: A location of contact with a touch sensitive device is determined. Output signals associated with a plurality of electrodes such as formed on a single layer of the touch sensitive device are measured to identify a first electrode positioned at an approximate location of contact with the touch sensor. An output signal associated with a different electrode that is separated from the first electrode is measured to determine an undesired signal amount, such as due to deflection. An undesired single amount associated with the first electrode may be estimated based on the undesired signal amount measured at the other electrode. The signal amount measured at the first electrode is then compensated by the estimated undesired signal amount. The location of contact with the touch sensor is then determined based on the compensated signal amount.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: June 23, 2020
    Assignee: Elo Touch Solutions, Inc.
    Inventors: Joel C. Kent, Selina Li
  • Patent number: 10678379
    Abstract: An acoustic touch apparatus is provided that includes a substrate capable of propagating surface acoustic waves, such as Rayleigh-type or Love-type waves. The substrate has a front surface, a back surface, and a curved connecting surface formed between the front surface and the back surface. The apparatus also includes at least one acoustic wave transducer and at least one reflective array, the acoustic wave transducer and the reflective array behind the back surface of the substrate. The acoustic wave transducer is capable of transmitting or receiving surface acoustic waves to or from the reflective array. The reflective array is capable of acoustically coupling the surface acoustic waves to propagate from the back surface and across the front surface via the curved connecting surface. Various types of acoustic touch apparatus with edge sensitive touch functions can be provided, according to specific embodiments.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: June 9, 2020
    Assignee: Elo Touch Solutions, Inc.
    Inventors: Yoshikazu Tanaka, Ting Gao, Joel C. Kent, Jeffrey T. Haller, Daniel H. Scharff, Timothy O. Avery
  • Patent number: 10620443
    Abstract: A virtual imaging display device includes a base board; a panel configured to be rotatably provided at one of sides of the base board; a lens mounting board configured to be rotatably provided at a side of the panel facing the base board; a projecting lens configured to be mounted on the lens mounting board; and a plurality of half-transmitting mirrors configured to be rotatably provided at remaining sides of the base board, respectively. The virtual imaging display device has a deployed state in which the lens mounting board and the half-transmitting mirrors are configured to abut on each other to define together a frustum structure, and a collapsed state in which the half-transmitting mirrors each are configured to rest on the base board, the lens mounting board is configured to rest on the panel, and the panel is configured to rest on the base board.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: April 14, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xiaojian Yang, Hui Zheng, Shumeng Sun, Huaxu Bao, Xiaofeng Liu, Inho Park, Weitao Chen
  • Patent number: 10620730
    Abstract: An active matrix substrate includes: first to third lines in first to third line layers, respectively, a signal that is different from a signal supplied to the first lines and the second lines being supplied to the third lines; first connection lines that connect the first lines or the second lines with first terminals; second connection lines that connect the third lines with second terminals; inspection TFTs 61 connected with the second connection lines; and common lines 63, 64. Each of the second connection lines 24c is connected to any one of the common lines through the inspection TFT 61. A space between the adjacent two second connection lines 24c connected to the same common line through the second connection line switching elements is wider than a space between the second connection lines 24c connected to different ones of the common lines, respectively, through the second connection line switching elements.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: April 14, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Yoshida, Isao Ogasawara
  • Patent number: 10613689
    Abstract: The present disclosure relates generally to a method for manufacturing a touch screen, a touch screen, and a display device having a touch screen. An embodiment of the method for manufacturing a touch screen may include forming a touch sensor and a fingerprint sensor concurrently on a glass substrate; thinning the glass substrate at a portion facing the fingerprint sensor to a predetermined thickness.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: April 7, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lei Zhang, Taofeng Xie, Lingyan Wu, Yang Liu
  • Patent number: 10579175
    Abstract: An electronic device including a touch screen including a fingerprint sensing region overlapped with a touch sensing region and configured to sense a fingerprint input on the fingerprint sensing region with a second sensing resolution higher than a first sensing resolution of a touch input on the touch sensing region, and a controller configured to display a fingerprint image in the fingerprint sensing region of the touch screen, in response to an event requiring an authentication procedure, sense a fingerprint of a fingerprint touch applied to the fingerprint image, perform the authentication procedure based on the sensed fingerprint, display at least one function icon adjacent to the fingerprint image based on a result of the authentication procedure, and execute a function corresponding to the at least one function icon based on a touch applied to the at least one function icon.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 3, 2020
    Assignee: LG ELECTRONICS INC.
    Inventor: Jie Seol
  • Patent number: 10573250
    Abstract: A liquid crystal display device of a time division driving system, capable of preventing an occurrence of a color shift without causing flickering or image sticking, is achieved. The liquid crystal display device includes: a stable arrival gradation data acquisition unit (122) configured to acquire stable arrival gradation data indicating an arrival gradation estimation value at a start timing of each field of the last frame, in a case where a virtual display process of three or more frames is performed based on input gradation data for one frame; and an input gradation data compensation unit configured to acquire writing gradation data by compensating the input gradation data based on the stable arrival gradation data.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidekazu Miyata, Masamitsu Kobayashi
  • Patent number: 10565927
    Abstract: An electroluminescent display device and a method of compensating for electrical characteristics of the electroluminescent display device are disclosed. The electroluminescent display includes a storage memory storing an average current-voltage expression of a display panel and a current value for each pixel, a parameter calculation unit calculating an offset and a gain for each pixel for causing current characteristics for each pixel based on the current value for each pixel to coincide with average current characteristics based on the average current-voltage expression, and a data correction unit correcting input image data to be written to each pixel based on the offset and the gain for each pixel. The average current-voltage expression and the current value for each pixel are obtained through a camera-based sensing process.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: February 18, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jungyoup Suk, Hyungnyuck Cho
  • Patent number: 10540925
    Abstract: The present disclosure relates to a shift register unit circuit, a method for driving the same, a gate drive circuit and a display panel. The shift register unit circuit includes a first switch circuit configured to transmit an input signal to a first node; a second switch circuit configured to transmit a first voltage to a signal output; a third switch circuit configured to transmit a second clock signal to a second node; fourth switch circuit configured to transmit the second voltage signal to a third node; a fifth switch circuit configured to transmit a second voltage signal to the signal output; a sixth switch circuit configured to transmit the second voltage signal to a fourth node; a first capacitor connected between the second clock signal and the third node; and a second capacitor connected between the first node and the second node.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: January 21, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yi Zhang
  • Patent number: 10528230
    Abstract: Methods and devices for presenting a virtual keyboard are provided. More particularly, in connection with a multiple screen device, a virtual keyboard can be presented in a first mode using all of one of the screens. In a second mode, the virtual keyboard can be presented using portions of both of the screens. More particularly, with the screens of the device in a landscape orientation, one screen can be devoted to present the virtual keyboard while the other screen remains available to present other information. In a portrait orientation, the virtual keyboard can span the two screens, such that a first portion of the first screen and a first portion of the second screen operate cooperatively to present the virtual keyboard.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: January 7, 2020
    Assignee: Z124
    Inventors: Sanjiv Sirpal, Robert Csiki
  • Patent number: 10514731
    Abstract: Disclosed is a touch panel. The touch panel includes a substrate, and an electrode part formed in a mesh shape on the substrate. The electrode part includes a resin layer comprising first and second sub-patterns, and a transparent electrode on the first sub-pattern. A ratio of a width of the first sub-pattern to a width of the second sub-pattern is in a range of 1:0.01 to 1:0.5.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: December 24, 2019
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Young Jae Lee, Hyun Soo Kim, Jung Hwan Bang, Jun Sik Shin, Joon Hyuk Yang, Dong Mug Seong, Jun Phill Eom, Kyoung Jong Yoo, Jun Lee, Chan Kyu Koo
  • Patent number: 10515604
    Abstract: A liquid-crystal display device and a driving method thereof are disclosed. The driving method of the liquid-crystal display device comprises: generating first and second power supply voltages; generating gamma-compensated voltages based on the first and second power supply voltages; converting data of an input image to the gamma-compensated voltages to output data voltages; distributing, by a multiplexer, the data voltages output from the data driver to a plurality of data lines; and varying at least one of the first and second power supply voltages at a given time interval.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: December 24, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Moonsoo Chung, Yousung Nam
  • Patent number: 10515575
    Abstract: A bistable display includes: an inner box constituted of a first substrate, a second substrate and a box body surrounding a space between the first substrate and the second substrate, a bistable display material is injected into the space, and one or more of a common electrode conductive layer, a pattern conductive layer, and a background conductive layer are respectively formed on the first substrate and/or the second substrate inside the inner box, and the common electrode conductive layer is led out of the inner box through a common electrode, the pattern conductive layer is led out of the inner box through a pattern electrode, and the background conductive layer is led out of the inner box through a background electrode.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: December 24, 2019
    Assignee: Schneider Electric Industries SAS
    Inventors: Weihe Fei, Fenglian Zhang, Vivien Moliton, Pierre Raulin
  • Patent number: 10504460
    Abstract: The display device includes a circuit and multiple pixels. Each pixel includes multiple sub-pixels, and each sub-pixel includes a pixel electrode and a portion of a common electrode. A frame period includes a first polarity period and a second polarity period. The circuit maintains a voltage of the common electrode unchanged during the frame period, and applies a first dot inversion mode in the first polarity period and applies a second dot inversion mode in the second polarity period to the pixel electrodes. If determining that the input image has a bright stripe and the dark stripe adjacent to the each other, the circuit increases an intensity of the sub-pixel in an edge of the dark stripe or the bright stripe, and/or decrease an intensity of the middle sub-pixel in the bright stripe.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: December 10, 2019
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Tung-Ying Wu, Yi-Hsiu Lin, Cheng-Che Tsai, Ming-Hung Weng
  • Patent number: 10503301
    Abstract: A touch display panel includes first touch electrodes arranged in a first direction and extending along a second direction, second touch electrodes arranged in the second direction and extending along the first direction, and sub-pixels; each first touch electrode comprises first electrode blocks arranged in the second direction, every two adjacent first electrode blocks are connected to each other, each second touch electrode comprises second electrode blocks made of metal, every two adjacent second electrode blocks are connected to each other by a bridge structure which is transparent and in the same layer as the second electrode blocks, an orthographic projection of the second electrode block on a plane of the touch display panel is enclosed within an orthographic projection of the non-aperture portion of the sub-pixel on the plane. A touch display device includes the touch display panel.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: December 10, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Qingxia Wang, Kaihong Huang, Min Chen, Gaojun Huang, Juan Zhu
  • Patent number: 10474265
    Abstract: A touch sensor integrated type display device includes: a display panel including first and second panel blocks (PBs), each including a pixel array with embedded touch sensors, a display driving circuit providing image data to pixels of the first and second PBs during a display period, and a touch sensing circuit driving the touch sensors of the first and second PBs during a touch sensing period, the display driving circuit including a shift register sequentially providing gate pulses (GPs) to gate lines, the shift register including: a first stage group (SG) applying a GP to gate lines in the first PB, a bridge stage connected in cascade to a last stage of the first SG, and providing a first carry signal, and a second SG applying a GP to gate lines in the second PB, a first stage of the second SG operating in response to the first carry signal.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: November 12, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Byeongseong So, Kitae Kwon, Kyujin Kim, Seungwan Cho
  • Patent number: 10475400
    Abstract: A method for controlling a digital display device and a digital display system implementing the method are provided in which a required luminance level for a pixel is controlled according to a store provided for each pixel, the contents of which indicate the number of discrete display update periods during an image refresh period for the pixel for which the pixel is to be illuminated to achieve the required luminance level, the content being read at each update period and the content determining whether the pixel is to be illuminated for that update period, the content being updated at each update period for which the pixel is illuminated to indicate that the number of update cycles for which the pixel is to be illuminated is thereby reduced by one and wherein the content of the store may be updated at any update cycle in response to changes in required pixel luminance level indicated by received image data.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 12, 2019
    Assignee: BAE SYSTEMS PLC
    Inventor: Matthew Frank Offredi
  • Patent number: 10475369
    Abstract: Method and apparatus for subpixel rendering. In one example, for each of an array of pixels on a display, a first signal including a first set of components is received. The first set of components are converted to a second set of components. The second set of components include a first component representing a first attribute of the pixel and a second component representing a second attribute of the pixel. The second set of components of the first signal are modified to generate a second signal by applying at least one operation to at least one of the first and second components based on the corresponding attribute of the pixel. The modified second set of components are converted to a modified first set of components of the second signal. A third signal is generated based on the modified first set of components for rendering subpixels corresponding to the pixel.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: November 12, 2019
    Assignee: SHENZHEN YUNYINGGU TECHNOLOGY CO., LTD.
    Inventor: Jing Gu
  • Patent number: 10459577
    Abstract: A video display device includes first and second illuminators irradiating a manipulation surface with illumination light for manipulation detection in different directions, an imaging unit employing an imaging element of a rolling shutter system that images the irradiated manipulation surface together with a manipulation object of a user, and a contact point detecting unit detecting a contact point at which the manipulation object of the user touches the manipulation surface based on a captured image of the imaging unit. Captured images of shadows of the manipulation object of the user formed by repeatedly lighting up the first illuminator and the second illuminator alternately are used in a contact point detection process of the contact point detecting unit, and in the alternate lighting of the first illuminator and the second illuminator, a lighting period of one illuminator is longer than an imaging cycle of one frame of the imaging unit.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 29, 2019
    Assignee: MAXELL, LTD.
    Inventors: Takehiro Niikura, Takashi Matsubara, Naoki Mori