Thin Film Tansistor (tft) Patents (Class 345/92)
  • Patent number: 11398200
    Abstract: A display device is disclosed. Plural sub-pixels of display panel are electrically connected to a gate line set of corresponding row. Each data line is electrically connected to two adjacent sub-pixels of same pixel. The first gate line of each gate line set is electrically connected to one of odd-numbered and even-numbered ones of sub-pixels of pixels of same row. The second gate line of each gate line set is electrically connected to the other one of the odd-numbered and even-numbered ones of sub-pixels of pixels of same row. In one frame time, the data signal drives the two adjacent sub-pixels of same pixel through the nth and (n+1)th data lines using opposite polarities, and the data signal drives the column-direction adjacent two sub-pixels through the nth and (n+1)th data lines using opposite polarities.
    Type: Grant
    Filed: December 29, 2018
    Date of Patent: July 26, 2022
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-Jen Chen
  • Patent number: 11393405
    Abstract: Provided are a shift register unit circuit and drive method, and a gate driver and a display device. The shift register unit circuit includes a first sub-unit circuit, a second sub-unit circuit, a third sub-unit circuit, and a fourth sub-unit circuit. Responsive to providing a corresponding input pulse and clock signal, the shift register unit circuit is configured output first, second, third, and fourth output signals. The shift register unit circuit is configured such that a fifth node is in conduction with a second node at least while the reset pulse is active.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: July 19, 2022
    Assignees: HEFEI BOE JOINT TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11393425
    Abstract: A pixel circuit, which may include a first pixel unit having a first display driving circuit (12), a first pixel electrode (P1), and a first control circuit (11), and a second pixel unit having a second display driving circuit (22), a second pixel electrode (P2), and a second control circuit (21). The first control circuit (11) may be configured to adjust and latch a voltage of a first positive phase node (Q1) and the first display driving circuit (12). The first display driving circuit (12) may be configured to provide a first display driving voltage to the first pixel electrode (P1). The second control circuit (21) may be configured to adjust and latch a voltage of a second positive phase node (Q2) and the second display driving circuit (22). The second display driving circuit (22) may be configured to provide a second display driving voltage to the second pixel electrode (P2).
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: July 19, 2022
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiguo Wang, Jun Fan, Xiaoyan Yang, Yusheng Liu
  • Patent number: 11386845
    Abstract: A pixel unit circuit includes a light emitting element, a first end thereof being coupled to a low level input end; a storage capacitor module, a first end thereof being coupled to a direct current voltage input end; a driving transistor, a gate electrode thereof being coupled to a second end of the storage capacitor module, and a first electrode thereof being coupled to a second end of the light emitting element; a first control module, coupled to a gate line, a data line and the gate electrode of the driving transistor, configured to control whether the gate electrode of the driving transistor is connected to the data line under the control of the gate line; and a potential control transistor, a gate electrode and a first electrode thereof being coupled to the first electrode of the driving transistor, the second electrode thereof being grounded.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: July 12, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Shengji Yang, Xue Dong, Xiaochuan Chen, Hui Wang, Yanming Wang, Pengcheng Lu, Wei Liu, Huijuan Wang, Minghua Xuan
  • Patent number: 11380664
    Abstract: A display device includes a substrate including a display area having a plurality of pixel areas and a non-display area located at at least one side of the display area; a pixel in each of the pixel areas; and a plurality of fan-out lines in the non-display area to form a first conductive layer. The pixel includes a pixel circuit layer including at least one transistor and a first bridge line and a second bridge line; and a display element layer on the pixel circuit layer. Each of the first and second bridge lines is electrically connected to a corresponding fan-out line from among the fan-out lines.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 5, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Hye Lee, Kyung Bae Kim, Mee Hye Jung
  • Patent number: 11373577
    Abstract: The present application discloses a shift-register unit. The shift-register unit includes a first sub-unit including a first input circuit coupled via a first node to a first output circuit. The first input circuit is configured to control a voltage level of the first node in response to a first input signal and the first output circuit is configured to output a shift-register signal and a first output signal in response to the voltage level of the first node. Additionally, the shift-register unit includes a second sub-unit including a second input circuit coupled via a second node to a second output circuit. The second input circuit is configured to control a voltage level of the second node in response to the first input signal and the second output circuit is configured to output a second output signal in response to the voltage level of the second node.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: June 28, 2022
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li, Xing Zhang
  • Patent number: 11367379
    Abstract: A display device according to an embodiment of the disclosure includes a timing controller, a scan driver including a plurality of stages connected to a plurality of clock signal lines and generating a plurality of scan signals in response to the scan start signal, a data driver configured to generate a plurality of data signals based on the image data, and a pixel portion including a plurality of pixels. One stage in the scan driver transmits a carry signal to 2n-th next stage. The timing controller selects any one of a normal frequency and low frequencies lower than the normal frequency as a driving frequency based on the input image data, and adjusts a clock duty of the plurality of clock signals so that a time required to output all of the plurality of scan signals during one frame is constant irrespective of the driving frequency.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: June 21, 2022
    Inventors: Se Hyuk Park, Jae Keun Lim, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee
  • Patent number: 11360358
    Abstract: A liquid crystal layer as a member of a liquid crystal element is disposed between a first resin film substrate and a second resin film substrate. A first/second conductive film is attached to one side of the first/second resin film substrate. A blade is inserted into the liquid crystal layer. The blade is moved while being inserted in the liquid crystal layer, thus making an incision in the liquid crystal layer. Then, the incision location is widened in the first resin film substrate and in the second resin film substrate, forming an opening in the surface of the liquid crystal layer. This also forms a space inside the liquid crystal layer, allowing the opening to communicate with the space. Part of an electrode is then inserted into the space of the liquid crystal layer and the liquid crystal layer is bonded with part of the electrode.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: June 14, 2022
    Assignee: KYUSHU NANOTEC OPTICS CO., LTD.
    Inventor: Junichi Baba
  • Patent number: 11361704
    Abstract: A shift register unit, a gate drive circuit, a display device and a method of driving a gate drive circuit are provided. The shift register unit includes a shift register circuit and an output control circuit. The shift register circuit is configured to output a valid output level at a first output terminal according to a first input signal received by a first input terminal, and is configured to reset according to a first reset signal received by a first reset terminal. The output control circuit is configured to output an invalid output level at the second output terminal according to a second input signal received by the second input terminal, thereby controlling a level of the first output terminal to the invalid output level, and is configured to reset according to a second reset signal received by the second reset terminal.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 14, 2022
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yifeng Zou, Hui Wang, Xiong Xiong
  • Patent number: 11355065
    Abstract: The present disclosure provides a pixel compensation driving circuit, which compensates an actual threshold voltage of a driving transistor, and finally makes current flowing through a light-emitting element independent from the actual threshold voltage of the driving transistor, thereby eliminating a drift of the actual threshold voltage of the driving transistor which causes uneven display of a display device, and improving display effect of a screen. The present disclosure also provides a pixel compensation driving method for driving the pixel compensation driving circuit, and a display device including the pixel compensation driving circuit.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: June 7, 2022
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Zhen Wu, Zhenling Wang
  • Patent number: 11355045
    Abstract: A multiplexer circuit includes a first switch unit and a second switch unit. The first switch unit is electrically connected to a first data line and a first pixel circuit, and configured to turn on according to a first signal in a first time duration. The second switch unit is electrically connected to the first data line and a second pixel circuit, and configured to turn on according to a second signal in a second time duration. The first time duration and the second time duration substantially start or end at a same time, so that the first time duration and the second time duration have overlap.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: June 7, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Rong-Fu Lin, Chi Yu, Chih-Fu Yang, Jie-Chuan Huang, Sung-Yu Su
  • Patent number: 11348533
    Abstract: A display may include an array of pixels, where each pixel in the array includes an organic light-emitting diode coupled to associated thin-film transistors. The thin-film transistors may be controlled using at least first and second horizontal scan line signals. Loading different data values into any given row in the array may cause the scan line signals to exhibit varying rise/fall times, which results in horizontal crosstalk and luminance non-uniformity across the display. The rise and fall times of the second scan line signal are crucial, so the second scan line signal is driven by two separate scan line drivers formed on both sides of the display. Only the fall time of the first scan line signal is crucial, so the first scan line signal is driven by only one peripheral scan line driver and is coupled to an auxiliary pull-down circuit that is only activated during the pull-down transition.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: May 31, 2022
    Assignee: Apple Inc.
    Inventors: Shinya Ono, Chin-Wei Lin, Gihoon Choo, Shiping Shen, Jie Won Ryu, Zino Lee, Hassan Edrees, Ting-Kuo Chang
  • Patent number: 11335234
    Abstract: A display device according to an embodiment of the disclosure includes a timing controller, a scan driver including a plurality of stages connected to a plurality of clock signal lines and generating a plurality of scan signals in response to the scan start signal, a data driver configured to generate a plurality of data signals based on the image data, and a pixel portion including a plurality of pixels. One stage in the scan driver transmits a carry signal to 2n-th next stage. The timing controller selects any one of a normal frequency and low frequencies lower than the normal frequency as a driving frequency based on the input image data, and adjusts a clock duty of the plurality of clock signals so that a time required to output all of the plurality of scan signals during one frame is constant irrespective of the driving frequency.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: May 17, 2022
    Inventors: Se Hyuk Park, Jae Keun Lim, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee
  • Patent number: 11320706
    Abstract: The present disclosure provides an array substrate, a liquid crystal light control structure and a liquid crystal display panel. The array substrate includes: a base substrate; a plurality of data lines arranged on the base substrate along a first direction; and a plurality of pixel electrodes arranged in an array. Two of the plurality of pixel electrodes, which are adjacent in the first direction, are provided in different layers and insulated from each other. Orthographic projections of the two of the plurality of pixel electrodes, which are adjacent in the first direction, to the base substrate, adjoin each other with an adjoiner therebetween being covered by an orthographic projection of one of the plurality of data lines to the base substrate.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: May 3, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO.. LTD.
    Inventors: Tianxin Zhao, Shijun Wang, Ruichen Zhang, Hao Liu, Xiaoqing Peng, Jiao Li, Bo Feng, Haoliang Ji, Xiaoxiao Chen, Yang Wang, Wenjun Xiao, Ji Dong, Hao Xu, Wenkai Mu, Bingqing Yang, Yi Liu
  • Patent number: 11320694
    Abstract: A backlight device includes a substrate and a plurality of light emitters on the substrate. Each of the plurality of light emitters includes a brightness controller disposed on the substrate, and a pad unit disposed on the substrate. The brightness controller generates a light-emission current, a light-emitting diode is allowed to be disposed on the pad unit, and the light-emitting diode emits light based on the light-emission current.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: May 3, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Minjae Jeong, Minkyu Woo, Misun Lee, Kyunghoon Chung, Chongchul Chai, Sungchul Hong
  • Patent number: 11315500
    Abstract: A display device system circuit and a display device are provided. The display device system circuit includes a power supply, a plurality of functional circuit modules and a plurality of ground wires corresponding to the plurality of functional circuit modules, respectively. Operating current input ends of the plurality of functional circuit modules are electrically connected to a positive electrode of the power supply, respectively. An operating current output end of each of the functional circuit modules is electrically connected to a negative electrode of the power supply via a corresponding ground wire. The functional circuit modules will not be interfered with each other, avoiding causing abnormal displaying by signal coupling between the functional circuit modules.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: April 26, 2022
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jianfeng Xiao
  • Patent number: 11308852
    Abstract: Provided are a driving method and driving device of a display panel, and a display device. A sub-display region in which gray scale values of first sub-pixels are 0 and gray scale values of second sub-pixels are less than a first preset gray scale value is determined as a first sub-display region, and a sub-display region in which not all of the gray scale values of the first sub-pixels are 0 and not all of the gray scale values of the second sub-pixels are less than the first preset gray scale value is determined as a second sub-display region. In a reset stage, a first reset signal is provided to an anode of an organic light emitting element of a sub-pixel of the first sub-display region and a second reset signal is provided to an anode of an organic light emitting element of a sub-pixel of the second sub-display region.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: April 19, 2022
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Zhiyong Xiong, Zhengxia Lv, Min Yang
  • Patent number: 11300841
    Abstract: To improve viewing angle characteristics by varying voltage which is applied between liquid crystal elements. A liquid crystal display device in which one pixel is provided with three or more liquid crystal elements and the level of voltage which is applied is varied between the liquid crystal elements is varied. In order to vary the level of the voltage which is applied between the liquid crystal elements, an element which divides the applied voltage is provided. In order to vary the level of the applied voltage, a capacitor, a resistor, a transistor, or the like is used. Viewing angle characteristics can be improved by varying the level of the voltage which is applied between the liquid crystal elements.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: April 12, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 11302221
    Abstract: A display device may include a first pixel, a second pixel, a first data line electrically connected to the first pixel, a second data line electrically connected to the second pixel and electrically insulated from the first data line, a first signal wire electrically connected to the first data line, a second signal wire electrically connected to the second data line, and a connecting wire electrically connecting the second data line to the second signal wire. The connecting wire may include a first section and a second section. The second section may be directly connected to the first section, may overlap the first pixel, may overlap the first data line, and may be oblique relative to each of the first data line and the second data line in a plan view of the display device.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: April 12, 2022
    Inventors: Hee Rim Song, Gyung Soon Park, Mu Kyung Jeon
  • Patent number: 11296171
    Abstract: A display substrate and a display device are provided. The display substrate includes sub-pixels and a light emitting control signal line. The sub-pixel includes an organic light emitting element and a pixel circuit, the organic light emitting element includes a second electrode, the pixel circuit includes a driving transistor and a first light emitting control transistor, and the pixel circuit further includes a connection structure. In the second color sub-pixel, a first electrode of the first light emitting control transistor is electrically connected with the connection structure through a first connection hole, and the connection structure is electrically connected with the second electrode through a second connection hole, the first connection hole and the second connection hole are located on both sides of the light emitting control signal line. In the third color sub-pixel, the second electrode does not overlap with a channel of the driving transistor.
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: April 5, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xin Mou, Yongfu Diao
  • Patent number: 11282470
    Abstract: This disclosure discloses a shift register element, a method for driving the same, a gate driver circuit, and a display device. The shift register element comprises a first input circuit, a second input circuit, a first node control circuit, a second node control circuit, a third node control circuit, and N output circuits, where the first input circuit, the second input circuit, and the first node control circuit are configured to control a first node, the second node control circuit is configured to control a second node so that the third node control circuit controls the third node according to the first node and the second node, and the N output circuits control corresponding output terminals according to corresponding clock signal terminals under the control of the first node.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 22, 2022
    Assignees: BOE Technology Group Co., Ltd.
    Inventors: Yishan Fu, Jun Fan, Han Zhang, Fuqiang Li
  • Patent number: 11271017
    Abstract: A display device includes: a substrate including a main display portion, edge portions disposed at edges of the main display portion and including rounded corners, first side portions bent from the edge portions, and second side portions bent from the main display portion; scan lines and data lines that are disposed on the substrate; transistors connected to the scan lines and the data lines; and a data voltage transmission line connected to data lines that are disposed in the first side portions and the edge portions.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: March 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung-Hwan Cho, Jong Hyun Choi, Kyung-Hoon Kim, Dong Hwan Shim, Seon Young Choi
  • Patent number: 11263980
    Abstract: A display apparatus including a display panel, a gate driver, a data driver, an emission driver, and a driving controller. The display panel includes a pixel including a switching element of a first type and a switching element of a second type. The driving controller determines a driving frequency of the switching element of the first type to be a first driving frequency and a driving frequency of the switching element of the second type to be a second driving frequency less than the first driving frequency in a low frequency driving mode. The driving controller determines the second driving frequency based on a difference of a luminance of a writing frame in which the data voltage is written in the pixel and a luminance of a holding frame in which the written data voltage in the pixel is maintained without writing the data voltage.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: March 1, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sehyuk Park, Hyojin Lee, Jinyoung Roh
  • Patent number: 11264413
    Abstract: A display device includes a substrate, a first data line, a scan line, a first sub-pixel, a passivation layer, and a common electrode. The first sub-pixel includes a first main-driving element, a first sub-driving element, a first capacitor electrode, and a first pixel electrode. The first main-driving element includes a first main-gate, a first main-channel layer, a first main-source, and a first main-drain. The first sub-driving element includes a first sub-gate, a first sub-channel layer, a first sub-source, and a first sub-drain. The first capacitor electrode is electrically connected with the first main-drain and the first sub-source. The first pixel electrode is electrically connected with the first sub-drain. The common electrode and the first capacitor electrode have a first main capacitor therebetween. The common electrode and the first pixel electrode have a first sub capacitor therebetween.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: March 1, 2022
    Assignee: Au Optronics Corporation
    Inventors: Yu-Min Chi, Sung-Yu Su, Pin-Miao Liu
  • Patent number: 11257424
    Abstract: A display device is disclosed. In an embodiment a display device includes a plurality of image points, each image point comprising at least one active region configured to generate first radiation, a carrier including a drive circuit for the plurality of image points and a detector assigned to at least some image points, the detector configured to receive second radiation, wherein at least some image points are configured to act either as an emitter or as a detector during operation of the display device.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 22, 2022
    Assignee: OSRAM OLED GMBH
    Inventors: Thorsten Frank Baumheinrich, Hubert Halbritter
  • Patent number: 11257433
    Abstract: Provided are a display panel (10) and the driving method thereof. The display panel (10) may include a first substrate (110) and a second substrate (120) opposite the first substrate (110). The first substrate (110) may include a pixel unit (100), and the pixel unit (100) may include a light emitting element (101) and a first transistor (112) for driving the light emitting element (101) to emit light. The second substrate (120) may include a second transistor (122). The second transistor (122) may be configured to have a second drift value of a second threshold voltage which has a specific relationship with a first drift value of a first threshold voltage of the first transistor (112) under same ambient condition.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: February 22, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiangbo Chen, Hongda Sun, Youngsuk Song
  • Patent number: 11249568
    Abstract: Provided is a touch-panel-integrated display device in which influences of noises due to voltages of data lines can be reduced, or noise correction can be easily performed. A touch-panel-integrated display device 1 includes a display panel that has a display area that includes a plurality of pixels defined by a plurality of gate lines 101 and a plurality of data lines 102. In the display area, a plurality of electrodes 111, and a plurality of lines 112 connected with the electrodes, are provided. A predetermined voltage is applied to each line 112 every fixed time period, and changes in the capacitance at each electrode 111 are detected. To each data line 102, a voltage having a polarity different from that for an adjacent one of the data lines 102 is applied. Each of the electrodes 111 is connected with at least one of the plurality of lines 112.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: February 15, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kosuke Nagata, Masayuki Hata, Mikihiro Noma
  • Patent number: 11245102
    Abstract: An OLED display and a method of manufacturing thereof are disclosed. In one aspect, the display includes a scan line formed over a substrate and configured to transfer a scan signal, a data line and a driving voltage line crossing the scan line and respectively configured to transfer a data voltage and a driving voltage, and a switching transistor electrically connected to the scan line and the data line and including a switching drain electrode configured to output the data voltage. The display also includes a driving transistor including a driving gate electrode, a driving drain electrode, and a driving source electrode electrically connected to the switching drain electrode. The display further includes a storage capacitor including a first storage electrode electrically connected to the driving gate electrode and a second storage electrode formed on the same layer as the driving voltage line.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: February 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myoung Geun Cha, Jin Goo Jung, Yoon Ho Khang, Se Mi Kim
  • Patent number: 11244645
    Abstract: A display device includes a display panel and a level shifter. The display panel displays images. The level shifter includes a signal pad through which a clock signal to drive the display panel is output and a reverse signal pad through which a reverse clock signal different from the clock signal is output, and the reverse signal pad is in an electrically floated state.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: February 8, 2022
    Assignee: LG Display Co., Ltd
    Inventors: Se-Dong Park, Soon-Dong Cho, Dong-Ju Kim, Hee-Jung Hong, Jung-Jae Kim
  • Patent number: 11238765
    Abstract: A display device includes a substrate, a plurality of pixel columns, and a lighting test circuit unit. The lighting test circuit unit is disposed in a non-display area on the substrate, includes a plurality of lighting test transistors, and provides a lighting test voltage to the pixel columns. Each of the lighting test transistors includes an active pattern including a source area, a drain area, and a channel area, a gate electrode disposed in the channel area, an interlayer insulating layer including a first contact hole spaced apart from a first side of the gate electrode by about 7 um or more, and a source electrode contacting the source area of the active pattern through the first contact hole.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: February 1, 2022
    Inventors: Youngok Park, Uikang Kim, Junggeun Lee
  • Patent number: 11232734
    Abstract: A shift register unit, a driving method, a gate driving circuit and a display device are provided. The shift register unit includes a first gate driving output circuit and a second gate driving output circuit. The first gate driving output circuit is used to output a first gate driving signal through the first gate driving signal output terminal; the second gate driving output circuit is used to generate a second gate driving signal outputted simultaneously with the first gate driving signal based on the first gate driving signal, a first clock signal and a second clock signal. In the present disclosure, the second gate driving output circuit is added, the first gate driving signal, the first clock signal, and the second clock signal are used to generate an inverted second gate driving signal, so that positive and negative switching control signals are generated by one stage of shift register unit.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: January 25, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Can Zheng, Jiangnan Lu, Tian Dong, Libin Liu, Long Han, Shiming Shi, Dawei Wang
  • Patent number: 11232761
    Abstract: The invention relates to a ghost relieving method for a display panel. The ghost relieving method for a display panel includes acquiring input gray scales; acquiring first gray scales and second gray scales according to the input gray scales; acquiring corresponding first voltages according to the first gray scales and corresponding second voltages according to the second gray scales; and outputting the first voltages and the second voltages to a pixel matrix.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: January 25, 2022
    Assignee: XIANYANG CAIHONG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Yuyeh Chen, Yuan-Liang Wu, Lei Sun
  • Patent number: 11227547
    Abstract: The present disclosure provides a pixel circuit, a pixel circuit driving method, and a display device. The display device can sense and store an original threshold voltage of a driving transistor in the turn-on stage by designing a pixel structure and detecting time sequence. An accrual threshold voltage of the driving transistor is read in an next turn-on stage according to a detected result in order to perform an internal compensation in real-time, and in order to sense and store a mobility of the driving transistor. As a result, unevenness of display can be improved.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: January 18, 2022
    Inventors: Zhen Wu, Zhenling Wang
  • Patent number: 11222907
    Abstract: In an array substrate, an electronic paper display panel and a drive method thereof, and a display device, a display area includes multiple sub-display areas. A plurality of scanning lines in each sub-display area are electrically insulated from each other, corresponding scanning lines in different sub-display areas are electrically connected to each other and display time of each sub-display area is controlled through control signal lines. When a control chip and a flexible circuit board are employed, only a small number of control chips and/or flexible circuit boards, or even only one control chip and/or one flexible circuit board, may drive multiple sub-display areas to display pictures.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: January 11, 2022
    Assignee: SHANGHAI AVIC OPTO ELECTRONICS CO., LTD.
    Inventors: Kerui Xi, Tingting Cui, Feng Qin, Jine Liu, Xiaohe Li
  • Patent number: 11217890
    Abstract: A method and apparatus for DC offset correction in an antenna aperture are described. In one embodiment, the antenna comprises: an array of antenna elements having liquid crystal (LC); drive circuitry coupled to the array and having a plurality of drivers, each driver of the plurality of drivers coupled to an antenna element of the array and operable to apply a drive voltage to the antenna element; and voltage correction logic coupled to the drive circuitry adjust drive voltages to compensate for an offset between a first magnitude of a first voltage applied to the LC of each antenna element during a first interval of drive polarity and a second magnitude of a second voltage applied to the LC of said each antenna element during a second interval of drive polarity opposite the drive polarity of the first interval.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: January 4, 2022
    Assignee: KYMETA CORPORATION
    Inventors: Steven Linn, Cagdas Varel
  • Patent number: 11219102
    Abstract: The disclosure provides a display device driving method and a display device. In driving the display device in which any one of a first frequency drive and a second frequency drive can be selected as a specific frequency, for a scanning period at the specific frequency from a start of a quenching period for a first row forming a frame to an end of a quenching period for a last row forming the frame, the scanning period in the second frequency drive is shorter than the scanning period in the first frequency drive.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: January 4, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Asahi Yamato, Hikaru Kuki, Akira Nomura
  • Patent number: 11215897
    Abstract: Provided are an array substrate, an electronic paper display panel and a drive method thereof and a display device. A display area includes a plurality of sub-display areas, a plurality of data lines in each sub-display area are electrically insulated from each other, corresponding data lines in different sub-display areas are electrically connected to each other, and a control signal line is configured to control display time of each sub-display area. When a control chip and a flexible circuit board are employed, only a small number of control chips and flexible circuit boards may drive the plurality of sub-display areas to display pictures.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: January 4, 2022
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Zuzhao Xu, Kerui Xi, Baiquan Lin, Xiaohe Li, Jine Liu, Feng Qin, Qiongqin Mao, Tinghai Wang, Mingwei Zhang
  • Patent number: 11205375
    Abstract: The present disclosure provides a pixel circuit and a display device. The pixel circuit includes a light-emitting element, a first voltage control circuit, a light-emitting control circuit, a second voltage control circuit, a control capacitor circuit and a reference voltage write circuit. The reference voltage write circuit is configured to write a reference voltage to the first electrode of the light-emitting element. The second voltage control circuit is configured to, under control of the first gate drive signal, control the second electrode of the light-emitting element to be coupled with the control node, thereby controlling the light-emitting element to be turned on, so that the control capacitor circuit is charged by the reference voltage, a potential at the control node is changed accordingly, until the light-emitting element is turned off.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: December 21, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Han Yue, Can Zhang
  • Patent number: 11199752
    Abstract: The display device includes a first substrate; an active layer disposed on the first substrate; a first insulation layer disposed on the active layer; a first electrode layer disposed on the first insulation layer including a gate electrode line extending along a first direction and a protruding portion extending along a second direction; a second insulation layer disposed on the first electrode layer; and a second electrode layer disposed on the second insulation layer. The second electrode layer includes a date line extending along the second direction and a conductive layer. The conductive layer includes a first conductive portion and a second conductive portion, wherein the first conductive portion has a first maximum width A along the first direction, and the second conductive portion has a second maximum width B along the first direction. The first maximum width A is less than the second maximum width B.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: December 14, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Chung-Wen Yen, Yu-Tsung Liu, Chao-Hsiang Wang, Te-Yu Lee
  • Patent number: 11194203
    Abstract: A first transistor, a second transistor, a third transistor, a fourth transistor are provided. In the first transistor, a first terminal is electrically connected to a first wiring; a second terminal is electrically connected to a gate terminal of the second transistor; a gate terminal is electrically connected to a fifth wiring. In the second transistor, a first terminal is electrically connected to a third wiring; a second terminal is electrically connected to a sixth wiring. In the third transistor, a first terminal is electrically connected to a second wiring; a second terminal is electrically connected to the gate terminal of the second transistor; a gate terminal is electrically connected to a fourth wiring. In the fourth transistor, a first terminal is electrically connected to the second wiring; a second terminal is electrically connected to the sixth wiring; a gate terminal is connected to the fourth wiring.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: December 7, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Patent number: 11164518
    Abstract: A display device includes a light emitting element. A first transistor transmits a driving current to the light emitting element. A second transistor is connected to a first electrode of the first transistor to transmit a data signal. A third transistor has a first electrode connected to a second electrode of the first transistor. An auxiliary transistor is connected between a second electrode of the third transistor and a gate electrode of the first transistor to transmit the data signal to the gate electrode of the first transistor. Each of the first transistor, the second transistor and the auxiliary transistor is a first-type transistor, and the third transistor is a second-type transistor different from the first-type transistor.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: November 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Su Na, Min Woo Byun, Seung Kyu Lee
  • Patent number: 11164520
    Abstract: A light emitting display panel includes a plurality of pixel circuits arranged in a matrix. Each of the plurality of pixel circuits includes a light emitting element, a capacitor that is connected to a gate of a drive transistor and the light emitting element, a first switch transistor that is connected to a first electrode of the capacitor, a first wire that is connected to the first electrode of the capacitor via the first switch transistor, a second switch transistor that is connected to a second electrode of the capacitor and the light emitting element, and a second wire that is connected to the second electrode of the capacitor via the second switch transistor. A voltage of the first wire and a voltage of the second wire are the same during a power off operation or during a non-light emission period.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: November 2, 2021
    Assignee: JOLED INC.
    Inventor: Hitoshi Tsuge
  • Patent number: 11158710
    Abstract: A display device including TFTs in a pixel area and in a peripheral driving area in which the number of through-holes in a TFT circuit is decreased, and the mounting density of the TFTs is improved, so that a high-resolution display can be achieved. The display device includes a display area in which pixels are disposed in a matrix form, and a TFT substrate, on which a peripheral driving circuit is disposed, on the outer side of the display area. The pixels or the peripheral driving circuit includes TFTs (thin film transistors) each of which is formed in such a way that a first gate electrode of each TFT is formed relative to a semiconductor layer with a first gate insulating film therebetween, and a drain electrode and a source electrode of each TFT that are connected to the semiconductor layer are formed at layers different from each other.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: October 26, 2021
    Assignee: Japan Display Inc.
    Inventor: Arichika Ishida
  • Patent number: 11151912
    Abstract: A control method includes: obtaining a first drive signal output by a level-shift circuit to a first shift register; obtaining a second drive signal output by the level-shift circuit to a second shift register; and controlling a working state of the level-shift circuit according to the obtain drive signals.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: October 19, 2021
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Bin Qiu
  • Patent number: 11151923
    Abstract: The present application discloses a driving method for a display panel, a driving device thereof and a display device. The driving method includes: performing square wave conversion on drive data received by each channel to obtain data line signals, where square wave signals generated by the conversion of different gray scales in the corresponding drive data have an identical high level, and the time of low level output is different.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: October 19, 2021
    Assignee: HKC CORPORATION LIMITED
    Inventor: Dongsheng Guo
  • Patent number: 11151942
    Abstract: An electro-optical device includes scan line, data line, pixel circuit located at a position corresponding to an intersection of the scan line and the data line, a first high potential line supplies a first potential, a low potential line supplies a second potential, and a second high potential line supplies a third potential. The pixel circuit includes a light emitting element, a memory circuit disposed between the first high potential line and the low potential line, a first transistor including a gate electrically connected to the memory circuit, and a second transistor including a gate electrically connected to the scan line. The second transistor is disposed between the memory circuit and f the data line. A potential difference between the first potential and the second potential is smaller than a potential difference between the third potential and the second potential.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: October 19, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Mitsutoshi Miyasaka, Yoichi Momose
  • Patent number: 11100841
    Abstract: A shift register, a driving method thereof, a gate driving circuit, and a display device. The shift register includes an input sub-circuit, a reset sub-circuit, a node control sub-circuit, a potential maintenance sub-circuit, a first output sub-circuit, and a second output sub-circuit.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: August 24, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Hongjun Wang
  • Patent number: 11087661
    Abstract: A display device includes a substrate and a plurality of gate driving units. The substrate has at least one curved portion with a curved side edge, and the plurality of gate driving units are disposed along the curved side edge.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: August 10, 2021
    Assignee: InnoLux Corporation
    Inventors: Yu-Chia Huang, Yuan-Lin Wu, Kuan-Feng Lee, Tsung-Han Tsai
  • Patent number: 11079877
    Abstract: A display driving circuit, suitable for a display device, includes multiple data circuits and multiple reading circuits. Each data circuit is configured to provide multiple data signals to corresponding ones of data lines of the display device. Each reading circuit is configured to compare multiple sensing signals on corresponding ones of sensing lines of the display device to generate a sensing result, and is configured generate multiple coupling signals according to the multiple data signals of a corresponding one of the multiple data circuits, respectively. The reading circuit is further configured to provide the multiple coupling signals to the corresponding ones of the multiple sensing lines. When the multiple data signals have one or more rising edges, the multiple coupling signals have one or more positive pulses. When the multiple data signals have one or more falling edges, the multiple coupling signals have one or more negative pulses.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: August 3, 2021
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Chih-Hao Hung, Hung-Chi Wang, Ya-Fang Chen
  • Patent number: 11081083
    Abstract: A display driver is disclosed. The display driver includes: a memory that stores initial control points (CPs) defining a first gamma curve for a first analog state associated with a display panel (DP); CP calculation circuitry that generates, based on the initial CPs, calculated CPs for a second analog state associated with the DP; multiplexer circuitry that: inputs the calculated CPs, auxiliary CPs defining a second gamma curve, and a switching signal identifying a luminance of a region of an image; and outputs, based on the switching signal, selected CPs; and gamma curve calculation circuitry that: inputs a data value associated with the region of the image; generates, based on the selected CPs, a portion of an output gamma curve near the data value; and outputs a voltage data for displaying the region of the image on the DP based on the data value and the output gamma curve.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: August 3, 2021
    Assignee: Synaptics Incorporated
    Inventors: Hirobumi Furihata, Tomoo Minaki, Kazutoshi Aogaki, Takashi Nose