Thin Film Tansistor (tft) Patents (Class 345/92)
  • Patent number: 11024697
    Abstract: A display apparatus includes a base substrate that includes a display area in which pixels are formed and a peripheral area that is a non-display area that surrounds the display area, a first conductive pattern layer disposed on the base substrate, a first insulating layer disposed on the first conductive pattern layer, a second conductive pattern layer disposed on the first insulating layer, a second insulating layer disposed on the second conductive pattern layer, and a third conductive pattern layer disposed on the second insulating layer. The peripheral area includes a first wiring area and a circuit area.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 1, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Junhyun Park, Dongwoo Kim, Sungjae Moon, Kangmoon Jo
  • Patent number: 11018167
    Abstract: The present disclosure relates to a method and system for performing aging process on the transistor in the display panel. A method for performing aging process on a transistor in a display panel, comprising: obtaining an initial characteristic curve of the transistor; determining an initial cutoff voltage range of the transistor according to the obtained initial characteristic curve; determining a gate-source voltage and a drain-source voltage required by the transistor according to the initial cutoff voltage range, so as to increase an cutoff voltage range of the transistor; and performing aging process on the transistor according to the determined required gate-source voltage and drain-source voltage.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: May 25, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Ke Zhao, Guoqing Zhang, Hongwei Gao, Xiaowei Wang, Zhihui Jia, Yan Zong, Longfei Yang, Hongxia Yang, Meili Guo, Weifeng Wang, Pucha Zhao, Zhixin Guo
  • Patent number: 11004413
    Abstract: A power circuit of a display panel and a display panel. The power circuit comprises a sensing circuit and a voltage output circuit. The sensing circuit is configured to provide a sensing signal indicative of a type of an image to be displayed by the display panel. The voltage output circuit is electrically connected to common electrodes of the display panel and configured to receive the sensing signal and change potentials of some of the common electrodes in response to a change in the sensing signal.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: May 11, 2021
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanfei Ren, Jingpeng Zhao, Panpan Li, Xuebo Liang, Ting Yang, Weixing Shan, Xiuzhu Tang
  • Patent number: 10991786
    Abstract: A signal control unit for an organic light emitting diode (OLED) display device includes a substrate structure including a plurality of active elements for the pixels, first metal electrodes disposed on the substrate structure, and configured to be electrically connected to a portion of each of the active elements, second metal electrodes disposed over and adjacent the first metal electrodes, configured to electrically connected to corresponding ones of the first metal electrodes, respectively, by via contacts extending vertically to electrically connect the first metal electrodes to the second metal electrodes, and interlayer insulating layer structure interposed between the first electrodes and the second electrodes and having the via contacts therein, the interlayer insulating layer structure having a stacked structure in which a first interlayer insulating layer, a light blocking layer and a second interlayer insulating layer are stacked in order.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: April 27, 2021
    Assignee: DB HITEK CO., LTD.
    Inventors: Jin Hyo Jung, Jung Hyun Lee, Dae Il Kim, Bum Seok Kim, Seung Ha Lee, Sang Yong Lee, Dong Hoon Park
  • Patent number: 10991335
    Abstract: A display device according to the present disclosure includes: pixels arranged in a matrix; a data line group that includes a pair of data lines for each pixel column; a data line drive circuit that supplies a positive-phase data signal to one of the pair of data lines, and a negative-phase data signal to the other of the pair of data lines; and an auxiliary drive circuit that is provided for each pair of data lines, and that processes the positive-phase data signal and the negative-phase data signal, in which the auxiliary drive circuit has a dead zone in a region where there is no difference between a positive-phase potential and a negative-phase potential, or where the difference in potential is smaller than a predetermined value. An electronic apparatus according to the present disclosure includes a display device having the configuration described above.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: April 27, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Toshihiko Orii, Hiroshi Nakao, Naoki Andou, Kazuhiro Takeda, Keiko Kawaguchi
  • Patent number: 10976630
    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: April 29, 2020
    Date of Patent: April 13, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Chung-Wen Yen, Yu-Tsung Liu, Chao-Hsiang Wang, Te-Yu Lee
  • Patent number: 10976624
    Abstract: It is possible to reduce a size of a lower frame region to ensure a wiring corrosion margin equivalent to that of a conventional technique. In a display device, a video signal wiring arranged in the lower frame region includes, in a region between a terminal section (terminal) and a video signal line, a first wiring formed on a first wiring layer and having one end connected to the terminal section to which a video signal line driving circuit is connected, a second wiring formed on a second wiring layer different from the first wiring layer and having one end connected to the other end of the first wiring, and a third wiring formed on the first wiring layer and having one end connected to the other end of the second wiring. The other end of the third wiring is connected to the video signal line via a fourth wiring formed on the second wiring layer, and the first wiring layer is formed on the side closer to an array substrate than to the second wiring layer.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: April 13, 2021
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Abe, Kentaro Agata
  • Patent number: 10978492
    Abstract: To provide a novel resistor. To provide a display device having a novel structure that can improve its reliability. To provide a display device having a novel structure that can reduce electrostatic discharge damages. The resistor includes a semiconductor layer and an insulating layer formed over the semiconductor layer, and the semiconductor layer is an oxide represented by an In-M-Zn oxide that contains at least indium (In), zinc (Zn), and M (M is a metal such as Al, Ga, Ge, Y, Zr, Sn, La, Ce, or Hf) and the insulating layer contains at least hydrogen.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: April 13, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 10971047
    Abstract: A device substrate including a substrate and 1st-stage to nth-stage driver units. Each of the 1st-stage to nth-stage driver units includes a pulldown element, a reset element, and an output element. A gate of the pulldown element is used for receiving a corresponding first start signal or a reset signal. A gate of the reset element is used for receiving the reset signal. A drain of the output element is used for outputting a corresponding gate driving signal. A gate of the pulldown element of the nth-stage driver unit is electrically connected with the gate of the reset element of the nth-stage driver unit so as to make the gate of the pulldown element of the nth-stage driver unit be used for receiving the reset signal.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: April 6, 2021
    Assignee: Au Optronics Corporation
    Inventors: Chia-Heng Chen, Yi-Fu Chen, Ping-Hung Shih, Wei-Chieh Sun, Peng-Che Tai, Jhih-Ci Chen
  • Patent number: 10971094
    Abstract: The invention provides a pixel driving circuit and LCD device. The pixel driving circuit electrically connects the drain of the third TFT of each sub-pixel in the N-th sub-pixel row to the first end of the second LC capacitor of a corresponding sub-pixel of the (N+1)th row. When driving, when scanning the N-th sub-pixel row, the third TFT of the N-th sub-pixel row turns on to release the voltage at the first end of the second LC capacitor of the N-th sub-pixel row to the first end of the second LC capacitor of the (N+1)th sub-pixel row, and does not affect the voltage on the array substrate common voltage line, thereby effectively ensuring consistent voltage value for various areas on the array substrate common voltage line. When applied to LCD device, the invention can improve the display quality of the LCD device.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: April 6, 2021
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Siyang Liu
  • Patent number: 10964283
    Abstract: A display device includes a plurality of pixels arranged in a column direction and a row direction, a plurality of data lines and a data driving part configured to apply data signals to the data lines. The data lines are connected with one of the pixels of a k-th column (‘k’ is a natural number) and one of the pixels of a (k+1)-th column in an odd-numbered row. The data lines are connected with one of the pixels of a (k+1)-th column and one of the pixels of a (k+2)-th column in an even-numbered row. As a result, a pseudo dot inversion drive pattern may be implemented while driving the data lines in accordance with a columnar polarity inversion scheme.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: March 30, 2021
    Inventor: Dong-Beom Cho
  • Patent number: 10964260
    Abstract: An electro-optical device is provided that includes a first wiring, a first data line and a second data line, a first pixel circuit coupled to the first data line, a second pixel circuit coupled to the second data line, a first switch having a first end coupled to the first wiring and a second end coupled to the first data line, and a second switch having a first end coupled to the first wiring and a second end coupled to the second data line.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: March 30, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Takeshi Koshihara
  • Patent number: 10957264
    Abstract: A display apparatus with improved aperture ratio and light transmittance is presented. The apparatus has a pixel group that includes a first pixel including first and second sub-regions, a second pixel including third and fourth sub-regions, and a third pixel including fifth and sixth sub-regions. The first, second, and third pixels are sequentially arranged in a first direction and at least two sub-regions of the first, third, and fifth sub-regions have different widths in the first direction. The second, fourth, and sixth sub-regions are sequentially arranged in the first direction, and at least one sub-region of the second, fourth, and sixth sub-regions expands toward an adjacent sub-region in the first direction and has a width greater than a width of the other sub-regions of the second, fourth, and sixth sub-regions in the same pixel group.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: March 23, 2021
    Inventors: Sunhwa Lee, Kwang-chul Jung, Sang-Uk Lim
  • Patent number: 10950166
    Abstract: A display device including: a plurality of main portions separated. from each other; and a plurality of bridges connecting adjacent main portions to each other, wherein a first main portion of the plurality of main portions includes a transistor and a light emitting element, a first bridge of the plurality of bridges includes a wiring that is electrically connected to the transistor or the light emitting element, and the first bridge includes curved parts that are curved in at least two different directions from each other.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: March 16, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Ho Hong, Sang Woo Kim, Jae Min Shin, Hye Jin Joo
  • Patent number: 10943545
    Abstract: A pixel circuit and a display apparatus. The pixel circuit comprises three sub-pixel circuits (P1, P2, P3) and one power supply circuit (VL), wherein the three sub-pixel circuits (P1, P2, P3) share a data line (Data); the power supply circuit (VL) is connected to a first voltage level terminal (VA), a first signal control line (EM1) and the sub-pixel circuits (P1, P2, P3), and the power supply circuit (VL) is configured to supply a first voltage level to the sub-pixel circuits (P1, P2, P3) through the first voltage level terminal (VA) under the control of a signal of the first signal control line (EM1); and the sub-pixel circuits (P1, P2, P3) are connected to the power supply circuit (VL) and the data line (Data), and are configured to display a gray scale under the control of the first voltage level supplied by the power supply circuit (VL) and a data signal of the data line (Data).
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: March 9, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Shengji Yang
  • Patent number: 10937359
    Abstract: A source driver includes a digital-to-analog converter configured to receive a data signal, convert the received data signal into an analog signal, and output the analog signal, an output unit including amplifiers configured to amplify the analog signal, a control signal provision unit configured to output at least one control signal based on or in response to a first bias signal, at least one level shifter configured to shift a level of the control signal(s) based on or in response to a second bias signal having a higher voltage than the first bias signal and output at least one level-shifted control signal, and a protector configured to detect a voltage of the first bias signal and turn off the amplifiers and the level shifter when the detected voltage of the first bias signal is less than a predetermined reference voltage.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: March 2, 2021
    Assignee: DB HiTek Co., Ltd.
    Inventor: Yong Ho Choi
  • Patent number: 10937371
    Abstract: A scan driver includes circuit stages each including a first input part to transfer a signal of a first node to a first output part having a second node in response to a first clock signal, a second input part to transfer a carry signal to the first node in response to a second clock signal that is different from the first clock signal, a holding part to maintain a signal of the second node, the first output part to transfer a third clock signal that is different from the first and second clock signals to an output terminal in response to the signal of the second node, a second output part to transfer the first clock signal to the output terminal in response to a signal of a third node, and a simultaneous driving part to turn off the second output part in response to the third clock signal.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bo Yong Chung, Dongwoo Kim, Yeonkyung Kim, Chong Chul Chai
  • Patent number: 10938349
    Abstract: Various methods and circuital arrangements for reducing a turn ON time of a cascode amplifier are presented. According to one aspect, a configurable switching arrangement coupled to a cascode transistor of the amplifier shorts a gate of the cascode transistor to a reference ground during an inactive mode of operation of the amplifier. During an active mode of operation of the amplifier, the configurable switching arrangement couples a gate capacitor to the gate of the cascode transistor that is pre-charged to a voltage that is higher than a gate biasing voltage to the cascode transistor, which ensures that cascode transistor turns ON much quicker than the traditional method of grounding the cap, hence provide a final current flow through the cascode amplifier in a shorter time by not limiting the turn ON time of the input transistor. The gate biasing voltage is coupled to the gate capacitor via a resistor.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: March 2, 2021
    Assignee: PSEMI CORPORATION
    Inventors: Emre Ayranci, Niraja Shreekant Paranjape
  • Patent number: 10930216
    Abstract: A display device and a method of driving the same. The display device may include: a first pixel area including first pixels and first data lines coupled to the first pixels; a second pixel area including second pixels and second data lines coupled to the second pixels; a first non-pixel area disposed on one side of the first pixel area such that the first non-pixel area borders the first and second pixel areas; a data driver configured to output data signals corresponding to the first and second pixels through first and second output lines, respectively; and a switch unit including a first switch unit having a demux configured to alternately couple each of the first output lines to corresponding first data lines, and a second switch unit configured to couple the second output lines to the respective different second data lines.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: February 23, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Hun Yi, Seung Kyu Lee, Ki Wook Kim, Yang Wan Kim
  • Patent number: 10923038
    Abstract: A display device comprises a display panel in which a plurality of subpixels are disposed, wherein the plurality of subpixels include a first subpixel, a second subpixel, a third subpixel, and a fourth subpixel that are sequentially disposed in a single row or column; a gate driver disposed on the display panel and supplying a scanning signal to the plurality of subpixels; a first island pattern disposed in each area of the first subpixel and the third subpixel; a second island pattern disposed in each area of the second subpixel and the fourth subpixel; a first connection line electrically connecting the first island pattern disposed in the area of the first subpixel and the first island pattern disposed in the area of the third subpixel; and a second connection line electrically connecting second island pattern disposed in the area of the second subpixel and the second island pattern disposed in the area of the fourth subpixel, wherein the first connection line and the second connection line are electricall
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: February 16, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: JaeHyun Kim, KyungMo Son, Mijin Jeong
  • Patent number: 10921670
    Abstract: An array substrate and a vehicle-mounted display device. A first transistor of the array substrate includes a source electrode connected with a pixel electrode, a drain electrode and a gate electrode, a compensation gate electrode connected with the gate electrode, the sum of an overlapping region of the source electrode and the gate electrode and an overlapping region of the source electrode and the compensation gate electrode is a first overlapping region. A second transistor includes a source electrode connected with a pixel electrode, a drain electrode and a gate electrode, a compensation gate electrode connected with the gate electrode, the sum of an overlapping region of the source electrode and the gate electrode and an overlapping region of the source electrode and the compensation gate electrode is a second overlapping region. An area of the first overlapping region is equal to an area of the second overlapping region.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: February 16, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lin Chen, Chengshao Yang, Tao Ma, Dengfeng Wang, Wenhao Tang
  • Patent number: 10923031
    Abstract: A pixel unit circuit includes a light emitting element, a first end being connected to a low level input end; a storage capacitor sub-circuit, a first end being connected to a DC voltage input end; a driving transistor, a gate electrode being connected to a second end of the storage capacitor sub-circuit, and a first electrode being connected to a second end of the light emitting element; a light emitting control sub-circuit, a control end being connected to a light emitting control line, the first end being connected to a high-level input end, and the second end being connected to a second electrode of the driving transistor, and configured to control whether the second electrode of the driving transistor is connected to the high level input end; and a charge compensation control sub-circuit, connected to a gate line, a data line and the gate electrode of the driving transistor.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: February 16, 2021
    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: 10892444
    Abstract: Provided is a display device. The display device includes a first substrate including a first base layer, a circuit layer disposed on the first base layer, and a light emitting layer disposed on the circuit layer, a second substrate including a top surface and a bottom surface and in which a plurality of grooves arranged in a first direction are defined in the bottom surface, the second substrate being disposed on the first substrate, and a plurality of light blocking members disposed on the plurality of grooves to control propagation direction of light outputted from the light emitting layer.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: January 12, 2021
    Inventors: Kang-yong Lee, Sungmin Kim, Kyungjun Park
  • Patent number: 10877322
    Abstract: According to one embodiment, a display device including a first signal line positioned between a first and second pixel area, a common electrode, a first and second switching element, a first and second pixel electrode, wherein the first pixel electrode includes a first connector, the second pixel electrode includes a second connector and a second projection, the common electrode includes an opening, the first and second connector are arranged with the first signal line interposed therebetween, the second projection is disposed in the first direction between the first signal line and the second connector, and a first gap is different from a second gap.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 29, 2020
    Assignee: Japan Display Inc.
    Inventors: Mitsufumi Sogabe, Yoshitaka Ozeki, Nobutaka Ozaki
  • Patent number: 10871841
    Abstract: It is an object to provide a semiconductor display device having a touch panel, which can reduce power consumption. The semiconductor display device includes a panel which is provided with a pixel portion and a driver circuit which controls an input of the image signal to the pixel portion, and a touch panel provided in a position overlapping with the panel in the pixel portion. The pixel portion includes a display element configured to perform display in accordance with voltage of the image signal to be input, and a transistor configured to control retention of the voltage. The transistor includes an oxide semiconductor in a channel formation region. The driving frequency of the driver circuit, that is, the number of writing operations of the image signal for a certain period is changed in accordance with an operation signal from a touch panel.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: December 22, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama
  • Patent number: 10867569
    Abstract: A display device includes: pixel transistors electrically connected to the respective source lines and the respective gate lines; a monitor transistor in which a lead-out wiring of a drain electrode is electrically connected to a first external terminal, a lead-out wiring of a gate electrode is electrically connected to a second external terminal, and a lead-out wiring of a source electrode is electrically connected to a third external terminal; a reference transistor in which a lead-out wiring of a drain electrode is electrically connected to a fourth external terminal, a lead-out wiring of a gate electrode is electrically connected to a fifth external terminal, and a lead-out wiring of a source electrode is electrically connected to a sixth external terminal; and a detector electrically connected to the third external terminal and the sixth external terminal to detect a shift amount of a threshold voltage of the monitor transistor.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: December 15, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Genshirou Kawachi, Kuniaki Amano, Ryutaro Oke, Daisuke Kajita
  • Patent number: 10852591
    Abstract: The image display device of the present invention includes a substrate. The substrate includes: an insulating substrate; a first metal layer, a first insulating layer, a second metal layer, a second insulating layer, and a third metal layer stacked in the stated order on the insulating substrate; a pixel control transistor; a first line; a gate driver provided with unit circuits; and a first connection line electrically connecting the first line and each unit circuit to each other. A gate electrode of the pixel control transistor is provided in the first metal layer. A drain electrode and a source electrode of the pixel control transistor are provided in the second metal layer. The first line is provided in the third metal layer. The first connection line is extended from the first line to each unit circuit through a region sandwiched by the first line and the gate driver.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: December 1, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masahiro Yoshida
  • Patent number: 10832618
    Abstract: The present disclosure relates to a pixel circuit and a method of driving the pixel circuit, and a display device. A pixel circuit, including: a light emitting device; a driving circuit; a data writing circuit; a light emitting control circuit; a threshold compensation circuit; a first storage circuit; and a second storage circuit.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: November 10, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueling Gao, Chengchung Yang
  • Patent number: 10809580
    Abstract: The present application provides an array substrate and a method for manufacturing the same, and a display device including the array substrate, the array substrate includes a substrate, and a gate drive circuit and a common electrode line arranged above the substrate, the gate drive circuit and the common electrode line are arranged adjacent to each other, and at least one groove is provided in the common electrode line. In the application, by forming the groove in the common electrode line, flow of the developing solution from the common electrode line to the gate drive circuit can be effectively suppressed, so as to solve the problem that the channel is broken in the thin film transistor of the gate drive circuit due to nonuniform distribution of the developing solution.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: October 20, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Zengbiao Sun, Ki Yong Kim, Tao Wang, Liping Luo, Huishuang Liu, Huali Yao
  • Patent number: 10809851
    Abstract: According to one embodiment, a display device includes a plurality of gate lines, a plurality of data lines intersecting with the gate lines, a plurality of pixel electrodes provided in areas defined by the gate lines and the data lines, and a sensor drive controller which includes a plurality of common electrodes facing the pixel electrodes and detects a touch by using the common electrodes. The sensor drive controller selects at least one of the common electrodes as a sensor electrode, detects a touch by using the sensor electrode, and inputs, to the other common electrodes, a guard signal for reducing generation of capacitance between the other common electrodes and the sensor electrode.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: October 20, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Hiroshi Mizuhashi, Koji Noguchi, Takafumi Suzuki
  • Patent number: 10788719
    Abstract: A liquid crystal display device includes first to fourth pixel electrodes neighbored each other in a first direction, a common electrode at least partially overlapping the first to fourth pixel electrodes, and a first data line and a second data line extended in a second direction different from the first direction, and neighbored each other where the first data line is interposed between the first pixel electrode and the second pixel electrode, the second data line is interposed between the third pixel electrode and the fourth pixel electrode, and at least one slit defined in the common electrode is interposed between the second pixel electrode and the third pixel electrode.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: September 29, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won Ho Kim, Sung Man Kim, Min Chul Song, Hwa Yeul Oh, Yeon Mun Jeon
  • Patent number: 10789894
    Abstract: A drive method for a display panel is provided. A first multiplex signal, a second multiplex signal, a third multiplex signal, a fourth multiplex signal, a fifth multiplex signal, and a sixth multiplex signal sequentially generate the high level pulse in the predetermined order in each of the first row periods of the (2i?1)th multiplex period. In addition, the first multiplex signal, the second multiplex signal, the third multiplex signal, the fourth multiplex signal, the fifth multiplex signal, and the sixth multiplex signal sequentially generate the high level pulse in a reverse order to the predetermined order in each of the second row periods of the (2i)th multiplex period. As a result, mura within the display picture of the display panel is eliminated to improve the display quality.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 29, 2020
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Lihua Zheng, Mang Zhao, Yong Tian
  • Patent number: 10790306
    Abstract: A display substrate, a manufacturing method thereof and a display device are provided, and the display substrate includes pixel units, each of the pixel units is provided with a thin film transistor, a pixel electrode and a common electrode; the pixel electrode and the common electrode are arranged in a same layer and insulated from each other, the pixel electrode includes a plurality of strip-shaped pixel sub-electrodes, the common electrode includes a plurality of strip-shaped common sub-electrodes, the plurality of strip-shaped pixel sub-electrodes (104) and the plurality of strip-shaped common sub-electrodes are alternately distributed, and an interval width between each pixel sub-electrode and each common sub-electrode adjacent to the pixel sub-electrode is from 1 ?m to 5 ?m. The display substrate is configured for solving the problem of low charging rate in large size display panels.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: September 29, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Heecheol Kim, Hyun Sic Choi
  • Patent number: 10783821
    Abstract: The disclosure provides a display panel and a method for driving the display panel. The display panel includes a display area and a peripheral area surrounding the display area, and the display area includes one first display area and at least one second display area. The design according to embodiments of the disclosure release enough space occupied by the peripheral area at one side of the at least one second display area far away from the first display area, thus increasing display area in desired direction and a screen-to-total face ratio.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: September 22, 2020
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Huimin Xie, Xuexin Lan, Liang Wen, Xiufeng Zhou, Donghua Li, Xiaoxiao Wu
  • Patent number: 10784288
    Abstract: A display panel has a display region, an external circuit region located at an edge of the display panel, and a first and second wiring regions. The first wiring region is located between the second wiring region and the external circuit region. The display panel includes a pixel array, gate driving circuit groups disposed between the second wiring region and the display region, first signal line groups extended from the external circuit region to the first and second wiring region, and second signal line groups extended from the second wiring region and connected to the corresponding gate driving circuit groups. In the second wiring region, a first portion of the first signal line groups overlapped with the second signal line groups has a first width, and a second portion thereof not overlapped with the second signal line groups has a third width which is larger than the first width.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 22, 2020
    Assignee: Au Optronics Corporation
    Inventors: Che-Wei Tung, Wei-Li Lin, Keng-Chuan Cheng
  • Patent number: 10783845
    Abstract: A liquid crystal control circuit is provided for driving a MIP liquid crystal panel. The MIP liquid crystal panel has a plurality of pixels, each of which includes a memory element and a display element. The memory element holds electric potential depending on an image signal. The display element is applied voltage depending on the electric potential which the memory element holds. The liquid crystal control circuit includes an inversion unit that inverts polarity of AC voltage in a first mode in which an enable signal is output. The AC voltage being is applied to the display element in synchronization with outputting of the enable signal. The enable signal activates the image signal output to the MIP liquid crystal panel.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: September 22, 2020
    Assignee: Casio Computer Co., Ltd.
    Inventors: Takahiro Ono, Fumiaki Ochiai, Yoshinori Asami, Eiji Yamakawa
  • Patent number: 10777624
    Abstract: A display assembly includes an array substrate, a package substrate adhered to the array substrate, and a photosensitive device; wherein the array substrate includes a pixel unit for emitting light to an object to be recognized on a displaying side of the display assembly; and the photosensitive device is provided on the package substrate for generating an optical signal based on received light reflected by the object to be recognized and converting the generated optical signal into an electric signal for recognizing the object to be recognized.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: September 15, 2020
    Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
    Inventor: Jing Gao
  • Patent number: 10755641
    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: November 19, 2018
    Date of Patent: August 25, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Mitsutoshi Miyasaka, Yoichi Momose
  • Patent number: 10755648
    Abstract: A display device includes a display panel including data lines, a data driver outputting a data voltage to be supplied to the data lines to a source line, and a multiplexer distributing the data voltage received from the source line to the data lines in response to an enable signal received through an enable signal line. The multiplexer includes a plurality of switching elements each including a drain electrode connected to the source line, a source electrode connected to the data line, and a gate electrode supplied with the enable signal. The enable signal is transferred from the enable signal line to the gate electrode via an enable signal pattern. The enable signal pattern is disposed on a metal layer different from the switching elements with an insulating layer interposed between them in a formation area of the switching elements.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: August 25, 2020
    Assignee: LG Display Co., Ltd.
    Inventor: Joonki Kim
  • Patent number: 10755661
    Abstract: A display panel has a display area and a non-display area surrounding the display area, and the display panel includes scan lines, data lines, pixel structures, at least one driving device, capacitor electrode lines, and compensation capacitors. Each pixel structure includes an active device, a pixel electrode, and a storage capacitor. The driving device is located in the non-display area and is electrically connected to the pixel structures. The capacitor electrode lines extend to the display area from the non-display area and are electrically connected to the storage capacitors of the pixel structures. The compensation capacitors are located in the non-display area and between the pixel structures and the driving device. Two ends of each of the compensation capacitor are electrically connected to one of the scan lines and one of the capacitor electrode lines, respectively.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: August 25, 2020
    Assignee: Au Optronics Corporation
    Inventors: Yueh-Hung Chung, Ya-Ling Hsu, Han-Ming Chen, Chen-Hsien Liao
  • Patent number: 10747346
    Abstract: The invention provides an array substrate and touch display device. The array substrate comprises: a plurality of sub-pixel units arranged in array, a plurality of touch sensing lines and DC power lines; a touch sensing line being provided for each column of sub-pixel units, and a DC power line being provided for each row of sub-pixel units, each sub-pixel unit comprising a photosensitive TFT, and the photosensitive TFT having a floating gate, a source electrically connected to the corresponding DC power line, and a drain electrically connected to the corresponding touch sensing line. The photosensitive TFT absorbs infrared radiation emitted by biological being when touched by biological being, thereby achieving conduction to transmit the voltage on DC power line to touch sensing line to complete touch sensing. The touch function is integrated into sub-pixel unit. No additional touch panel is required, which can reduce production cost and prevent erroneous operation.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: August 18, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yuan Zhang
  • Patent number: 10747035
    Abstract: A GOA circuit including a plurality of cascade single-stage GOA circuit units, wherein each of the single-stage GOA circuit units includes: a first pull-down maintaining unit connected to a low power source voltage line and including a first output end; a second pull-down maintaining unit connected to the low power source voltage line and including a second output end; a first compensation unit connected to the first pull-down maintaining unit and configured to connect the first input end to a pre-charging node and a high power source voltage line in response to a first control signal and a second control signal, respectively; and a second compensation unit connected to the second pull-down maintaining unit and configured to connect the second input end to the high power source voltage line and the pre-charging node in response to the first control signal and the second control signal, respectively.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: August 18, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Shuai Chen
  • Patent number: 10748500
    Abstract: The present application discloses a driving apparatus and method of a display panel. The apparatus includes a first driver circuit and a second driver circuit; each of the first driver circuit includes two first sub driver circuits, the two first sub driver circuits correspondingly connected to one first scan line and oppositely arranged on two ends of the first scan line, and the two first sub driver circuits jointly driving the first scan line; each of the second driver circuit includes two second sub driver circuits, the two second sub driver circuits correspondingly connected to one second scan line and oppositely arranged on two ends of the second scan line, and the two second sub driver circuits jointly driving the second scan line; and the two second sub driver circuits oppositely arranged on the two ends of the second scan line jointly drive the second scan line.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: August 18, 2020
    Assignee: HKC Corporation Limited
    Inventor: Jianfeng Shan
  • Patent number: 10720117
    Abstract: A display device including: a display panel including a gate line and a data line; and a shift register including a stage for driving the gate line. The stage may include a first driving unit in a display area of the display panel and a second driving unit in a non-display area of the display panel.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: July 21, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jonghee Kim, Jisun Kim, Youngwan Seo, Jaekeun Lim, Chongchul Chai
  • Patent number: 10719164
    Abstract: Disclosed herein is a display device with a touch sensor, including: a plurality of display pixel electrodes; a common electrode configured to be provided opposed to the display pixel electrodes; a display function layer configured to have an image display function; a display control circuit configured to apply a display voltage between the display pixel electrodes and the common electrode based on an image signal and carry out image display control so that the display function of the display function layer be exerted; and a touch detection electrode configured to be provided opposed to the common electrode and form capacitance between the touch detection electrode and the common electrode.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: July 21, 2020
    Assignee: Japan Display Inc.
    Inventors: Takeya Takeuchi, Hiroshi Mizuhashi, Tadayoshi Katsuta, Takehiro Shima
  • Patent number: 10706761
    Abstract: A control method for a display panel is provided, the display panel includes multiple gate lines, multiple data lines arranged to intersect with the gate lines in an insulative manner, multiple sub-pixels arranged in an array and a demultiplexer. The N data lines for charging the sub-pixels with different colors are connected to one signal input terminal through the demultiplexer, N is an integer greater than 1. The control method includes charging the sub-pixels connected to the demultiplexer in a direct charging manner, and the sub-pixels with the same color have the same charging time period in a preset period.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: July 7, 2020
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yue Li, Renyuan Zhu, Dongxu Xiang, Yana Gao, Xingyao Zhou
  • Patent number: 10706767
    Abstract: A shift register unit circuit includes an input circuit configured to supply an active potential to a first node responsive to an input pulse from an input terminal being active and to supply an inactive potential to the first node responsive to a reset pulse from a reset terminal being active; an output circuit configured to supply a first clock signal to an output terminal responsive to a second node being at the active potential and to cause a potential at the second node to be changed from the active potential to further away from the inactive potential responsive to a transition of a potential at the output terminal transitioning from the inactive potential to the active potential; and a potential control circuit configured to restrict a change in the potential at the first node caused by the transition of the potential at the output terminal from the inactive potential to the active potential.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: July 7, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Jun Fan, Wei Li, Fuqiang Li
  • Patent number: 10698273
    Abstract: The image display device of the present invention includes a substrate. The substrate includes: a first metal layer, a first insulating layer, a second metal layer, a second insulating layer, and a third metal layer stacked in the stated order; a scanning signal line; and a gate driver. The gate driver includes a unit circuit including an output control transistor. The scanning signal line is provided in the second metal layer in the display region. The substrate includes a first additional line electrically connected to a gate electrode of the output control transistor. The first additional line includes a first additional line portion provided in the first metal layer in the display region. The first additional line portion overlaps the scanning signal line in the display region via the first insulating layer.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: June 30, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masahiro Yoshida
  • Patent number: 10692419
    Abstract: Provided are a display panel, a display device and a display method of the display panel. The display panel includes a pixel array, where the pixel array includes a plurality of pixel groups and each of the plurality of pixels group includes first-type pixel units and second-type pixel units; and a drive circuit configured to provide a drive signal for the pixel array. A display mode of the display panel includes a high-definition display mode in which within one-frame time, the first-type pixel units and the second-type pixel units collectively display a same to-be-displayed picture; a stereoscopic display mode in which the first-type pixel units display a user's left-eye picture within first time and the second-type pixel units display a user's right-eye picture within second time; and a power saving display mode in which the first-type pixel units display a picture and the second-type pixel units do not perform displaying.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: June 23, 2020
    Assignee: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Jun Lin, Shuang Cheng, Lei Wen, Honghu Ma, Jinghua Niu, Ping An
  • Patent number: 10672332
    Abstract: A pixel compensation circuit and a driving method thereof, and a display device. The pixel compensation circuit includes: a driving sub-circuit; a light-emitting device; an initialization sub-circuit, configured to initialize a control electrode of the driving sub-circuit; a data writing sub-circuit, configured to provide a data signal to the control electrode of the driving sub-circuit; a voltage input sub-circuit, configured to provide a signal of the first power supply terminal to the first electrode of the driving sub-circuit; a storage and voltage division sub-circuit, configured to store a voltage of the first electrode of the driving sub-circuit, and when the control electrode of the driving sub-circuit is floating, maintain stability of a voltage difference between the control electrode and the first electrode of the driving sub-circuit; and a threshold compensation sub-circuit, configured to write a threshold voltage of the driving sub-circuit into the first electrode of the driving sub-circuit.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: June 2, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Sangwon Lee, Min Ho Ko, Sang Hun Kang, Young Yik Ko, Wanli Dong