Particular Row Or Column Control (e.g., Shift Register) Patents (Class 345/100)
  • Patent number: 11404007
    Abstract: A display substrate and a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate, including a pixel array region and a peripheral region; and a first scan driving circuit, a plurality of power lines, a first signal line group, and a second signal line group. The first scan driving circuit includes a plurality of cascaded first shift registers; the plurality of power lines are configured to provide a plurality of power voltages to the plurality of cascaded first shift registers in the first scan driving circuit; the first signal line group includes at least one timing signal line; the second signal line group includes a first trigger signal line configured to provide a first trigger signal to a first-stage first shift register; and the first trigger signal line is between the plurality of power lines and the pixel array region.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: August 2, 2022
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chao Zeng, Weiyun Huang, Yue Long, Yao Huang, Meng Li
  • Patent number: 11398179
    Abstract: A shift register unit, a gate drive circuit, a display device and a driving method are provided. The shift register unit includes a sub-shift register, a second sub-shift register and an output control circuit. The first sub-shift register includes a first output terminal and a first control node, and is configured to output a first clock signal under control of a level of the first control node. The second sub-shift register include a second output terminal and a second control node, and the second output terminal outputs a display output signal in a display phase and a random output signal in a blank phase under control of a level of the second control node. The output control circuit is connected to the first sub-shift register and the second control node, and is configured to control the level of the second control node under control of an output control signal.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: July 26, 2022
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhidong Yuan, Yongqian Li, Xuehuan Feng, Can Yuan
  • Patent number: 11393424
    Abstract: A display device with a variant-shape display region other than the rectangular display region is configured to form a scanning line drive circuit along the variant-shape display region. The scanning line drive circuit includes bus wiring group with clock wiring for supplying clocks with three or more phases and the power supply wiring for supplying power, and the unit circuits for configuring the shift register including five or more transistors. The bus wiring and the unit circuits are formed on the different regions so as not to cross with one another.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: July 19, 2022
    Assignee: Japan Display Inc.
    Inventors: Takayuki Suzuki, Hiroyuki Abe
  • Patent number: 11393406
    Abstract: The present disclosure relates to a semiconductor integrated circuit for driving a display, and more particularly, to a semiconductor integrated circuit for driving a display to supply gamma voltages to respective DACs through a gamma bus to which a plurality of gamma voltage circuits are connected.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: July 19, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Young Sun Na
  • Patent number: 11381149
    Abstract: A switching element control circuit includes: a third electrode voltage control part which controls a third electrode voltage; a first electrode current detection part which detects a first electrode current which flows through the switching element; a memory part which stores information including an initial threshold voltage and an initial first electrode current, and a drain current characteristic of a threshold voltage; and a threshold voltage calculation part which calculates a threshold voltage at a time of operating the switching element based on information including the first electrode current, the initial threshold voltage, and an initial first electrode current, and information relating to the first electrode current characteristic of the threshold voltage, wherein the third electrode voltage control part controls the third electrode voltage based on a threshold voltage at the time of operating the switching element calculated by the threshold voltage calculation part.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: July 5, 2022
    Assignee: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Kenichi Suzuki, Wataru Miyazawa
  • Patent number: 11380412
    Abstract: A semiconductor device or the like with a novel structure that can change the orientation of the display is provided. A semiconductor device or the like with a novel structure, in which a degradation in transistor characteristics can be suppressed, is provided. A semiconductor device or the like with a novel structure, in which operation speed can be increased, is provided. A semiconductor device or the like with a novel structure, in which a dielectric breakdown of a transistor can be suppressed, is provided. The semiconductor device or the like has a circuit configuration capable of switching between a first operation and a second operation by changing the potentials of wirings. By switching between these two operations, the scan direction is easily changed. The semiconductor device is configured to change the scan direction.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: July 5, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Patent number: 11380277
    Abstract: A gate driver on array (GOA) circuit and a display panel are provided. The GOA circuit includes a plurality of cascaded GOA units. Switching transistor devices are added to an inverter of the GOA unit, and a low-potential signal is output to relevant nodes in the inverter in time to release residual charge of the relevant nodes.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: July 5, 2022
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD
    Inventor: Suping Xi
  • Patent number: 11373578
    Abstract: A display device includes: a first pixel connected to a first data line and a first scan line; a second pixel connected to the first data line and a second scan line; a first scan driver connected to a first scan start line and the first scan line; and a second scan driver connected to a second scan start line and the second scan line. In a first frame period, the second scan start line is to be suppled with a second scan start signal having a turn-on level, after a first period elapses after a first scan start signal having a turn-on level is supplied to the first scan start line. In a second frame period, a difference between a time at which the first scan start signal having the turn-on level is supplied and a time at which the second scan start signal having the turn-on level is supplied corresponds to a second period. The second period is shorter than the first period.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: June 28, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Hyun Ka, Ki Myeong Eom, Kyong Hwan Oh, Hai Jung In
  • Patent number: 11373615
    Abstract: It is an object to provide a semiconductor device which can supply a signal with sufficient amplitude to a scan line while power consumption is kept small. Further, it is an object to provide a semiconductor device which can suppress distortion of a signal supplied to the scan line and shorten a rising time and a falling time while power consumption is kept small. A semiconductor device which includes a plurality of pixels each including a display element and at least one first transistor and a scan line driver circuit supplying a signal for selecting the plurality of pixels to a scan line. A light-transmitting conductive layer is used for a pixel electrode layer of the display element, a gate electrode layer of the first transistor, source and drain electrode layers of the first transistor, and the scan line.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: June 28, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Atsushi Umezaki, Ryo Arasawa
  • Patent number: 11373609
    Abstract: It is an object to provide a display device which can favorably display a image without delayed or distorted signals. The display device includes a first gate driver and a second gate driver. The first gate driver and the second gate driver each include a plurality of flip flop circuits and a plurality of transfer signal generation circuits. Both the flip flop circuit and the transfer signal generation circuit are circuits which output a signal inputted to a first input terminal with a half clock cycle delay. In addition, an output terminal of the transfer signal generation circuit is directly connected to a first input terminal of the flip flop circuit in the next stage. Therefore, delay and distortion of the signal which is inputted from the transfer signal generation circuit to the flip flop circuit can be reduced.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: June 28, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Patent number: 11367409
    Abstract: A driving apparatus, a display apparatus, and a driving method are provided. The driving apparatus includes: a first switch tube, a second switch tube, a third switch tube, and a data output assembly. A first shared voltage or a second shared voltage are controlled by on states and off states of the first switch tube, the second switch tube, and the third switch tube to be output to a pixel electrode.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: June 21, 2022
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiaoyu Huang
  • Patent number: 11367407
    Abstract: A display driver according to the present invention includes a control part and a fault detection circuit. The control part sequentially incorporates first fault detection data and second fault detection data into a video signal during non-display periods of the video signal. The fault detection circuit binarizes each of a first pixel driving voltage and a second pixel driving voltage with a predetermined threshold voltage to obtain a first signal and a second signal. The first pixel driving voltage is generated based on the first fault detection data. The second pixel driving voltage is generated based on the second fault detection data. The fault detection circuit determines whether the first signal and the second signal match and outputs a fault detection signal that indicates a presence of a fault when the first signal and the second signal match.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: June 21, 2022
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Hiroaki Ishii
  • Patent number: 11367380
    Abstract: A display device includes a pixel unit, a binary driver, and a timing generator. The display device is an active matrix display device configured to receive a data signal including image data and other data different from the image data. The pixel unit includes a memory configured to store the image data. The binary driver includes a first holding circuit configured to hold the image data and at least one second holding circuit configured to hold the other data. The timing generator is configured to generate a drive signal used for driving the binary driver.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: June 21, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidekazu Yamanaka, Yuhichiroh Murakami, Shuji Nishi, Shige Furuta, Takahiro Yamaguchi, Yasushi Sasaki, Satoshi Fujii
  • Patent number: 11367408
    Abstract: An electro-optical device includes a first switch provided between an input node supplied with a data signal and a first data line, the first switch being configured to be turned ON or OFF by a first control signal, a second switch provided between the input node and a second data line, the second switch being configured to be turned ON or OFF by the second control signal, a sequential output circuit configured to output a first pulse, and a second pulse exclusive of the first pulse, logical operational first logical operation circuit configured to acquire a first logical product signal of the first control signal and the first pulse, and a second logical product signal of the second control signal and the second pulse, and a second logical operation circuit configured to generate a logical sum signal of the first logical product signal and the second logical product signal.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: June 21, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Shinsuke Fujikawa
  • Patent number: 11361724
    Abstract: Disclosed are a drive circuit of a display device, and a display device. The drive circuit includes: a plurality of sets of transmission signal lines; a set of clock signal lines, in signal connection with a timing drive circuit separately to acquire a gate drive clock signal; and a compensation capacitor, connected in parallel to each transmission signal line, each transmission signal line in each set of transmission signal lines being in signal connection with a clock signal line corresponding to a set of clock signal lines, where the compensation capacitance corresponding to the transmission signal line, closer to the timing drive circuit, in each set of transmission signal lines is smaller.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: June 14, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: HuaiLiang He
  • Patent number: 11360363
    Abstract: The display apparatus includes a data generation circuit, a source driver circuit, and a pixel. The source driver circuit is electrically connected to the pixel through first and second wirings. The pixel includes a display device that is a liquid crystal device, a potential of one electrode of the display device can be a potential of the first wiring, and a potential of the other electrode of the display device can be a potential of the second wiring. The image data generation circuit has a function of generating digital image data including first and second data. One of the first and second wirings is made to have a potential corresponding to first data, and the other of the first and second wirings is made to have a potential corresponding to the second data. The potential of the first wiring and the potential of the second wiring are interchanged.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: June 14, 2022
    Inventors: Kei Takahashi, Susumu Kawashima, Koji Kusunoki, Kouhei Toyotaka, Kazunori Watanabe
  • Patent number: 11361726
    Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: June 14, 2022
    Inventors: Susumu Kawashima, Kouhei Toyotaka, Kei Takahashi
  • Patent number: 11361723
    Abstract: The present disclosure provides a shift register unit, a gate driving circuit and a method for driving the same, and a display apparatus. The shift register unit includes: an input sub-circuit coupled to an input signal terminal and a pull-up node and configured to transmit an input signal from the input signal terminal to the pull-up node under control of the input signal; and n output sub-circuits, wherein each of the n output sub-circuits is coupled to the pull-up node, one of n clock signal terminals, a first level signal terminal, and one of n output signal terminals, and is configured to transmit a clock signal from the clock signal terminal coupled to the output sub-circuit to the output signal terminal coupled to the output sub-circuit under control of a voltage signal at the pull-up node, where n is an integer greater than 1.
    Type: Grant
    Filed: September 29, 2018
    Date of Patent: June 14, 2022
    Assignees: FUZHOU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Zuwei Weng
  • Patent number: 11361698
    Abstract: An electronic device includes: a display panel and a host. The host is electrically connected to the display panel, and includes a processing unit and a graphics processing unit. The processing unit executes a driver program of the graphics processing unit and a specific program to render a display image of the specific program, wherein the display image includes a user interface. The processing unit obtains position information about a static area of the user interface. In response to the processing unit obtaining the position information about the static area of the user interface, the graphics processing unit performs a burn-in-prevention process on the static area via the driver program to generate an output image, and transmits the output image to the display panel for displaying.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: June 14, 2022
    Assignee: GIGA-BYTE TECHNOLOGY CO., LTD.
    Inventors: Hou-Yuan Lin, Ching-Hung Chao, Po-Chang Tseng, Hung-Yen Chen
  • Patent number: 11361728
    Abstract: A liquid crystal display apparatus including a gate driving circuit disposed on a liquid crystal display is provided. The apparatus further includes a data driving chip, disposed on the liquid crystal display panel, to apply data driving signals to data lines. The gate driving circuit includes a plurality of stages connected to one another in parallel. The odd-numbered stages of the stages each apply gate driving signals to odd-numbered gate lines of the gate lines, in response to a first clock signal and the even-numbered stages of the stages each apply the gate driving signals to even-numbered gate lines of the gate lines, in response to a second clock signal having an opposite phase from a phase of the first clock signal.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: June 14, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Jeon, Hyung Guel Kim, Dong Hwan Kim
  • Patent number: 11355071
    Abstract: A display device includes: a display area including pixels for displaying an image; a non-display area adjacent to the display area; scan lines connected to the pixels; a first scan driver circuit disposed in the non-display area, where the first scan driver circuit is connected to first scan lines among the scan lines, and outputs first scan signals to the first scan lines; and a second scan driver circuit disposed in the non-display area, where the second scan driver circuit is connected to second scan lines among the scan lines, and outputs second scan signals to the second scan lines. The second scan driver circuit is disposed farther away from the display area than the first scan driver circuit is.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: June 7, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Hyun Kim, Jong Hyun Choi, Seung Hwan Cho
  • Patent number: 11355053
    Abstract: A source driver includes a plurality of output buffers configured to output data signals respectively corresponding to a plurality of data lines, and an output controller configured to control a timing at which each of the data signals corresponding to second image data is transferred from the output buffers to the data lines based on a difference between first image data and the second image data.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: June 7, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Tae Kim, Ji Hye Kim, Jae Hyeon Jeon
  • Patent number: 11355067
    Abstract: An array substrate is provided, which includes a gate driver on array (GOA) circuit and a plurality of logic OR gate units integrated in a rear end of the GOA circuit. The GOA circuit includes a plurality of cascaded GOA units, each of the GOA units includes a scan terminal, and at least three continuously-cascaded GOA units are connected to one of the logic OR gate units through the scan terminals.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: June 7, 2022
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Yan Xue
  • Patent number: 11348653
    Abstract: An object is to provide a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit. A pulse signal output circuit according to one embodiment of the disclosed invention includes first to tenth transistors. The ratio W/L of the channel width W to the channel length L of the first transistor and W/L of the third transistor are each larger than W/L of the sixth transistor. W/L of the fifth transistor is larger than W/L of the sixth transistor. W/L of the fifth transistor is equal to W/L of the seventh transistor. W/L of the third transistor is larger than W/L of the fourth transistor. With such a structure, a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit can be provided.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: May 31, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Seiko Amano, Kouhei Toyotaka, Hiroyuki Miyake, Aya Miyazaki, Hideaki Shishido, Koji Kusunoki
  • Patent number: 11342037
    Abstract: The present disclosure provides a shift register unit, a driving method, a light emitting control gate driving circuit, and a display apparatus. The shift register unit includes: a light emitting control signal output terminal, a pull-up control node control circuit, N stages of inversion control circuits, a pull-up node control circuit, a pull-down node control circuit, and an output circuit, where N is an integer greater than 1. A first stage of inversion control circuit is configured to invert an input signal. An nth stage of inversion control circuit inverts the input signal under control of an (n?1)th inversion node, where n is an integer and 2?n?N.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: May 24, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Quanhu Li
  • Patent number: 11335291
    Abstract: A display controller for a display may include a frame rate circuit to change a frame rate of the display from a first frame rate to a second frame rate, and a reference voltage circuit to adjust a reference voltage of the display from a first reference voltage corresponding to the first frame rate to a second reference voltage corresponding to the second frame rate. The display may be a thin film transistor liquid crystal display. The reference voltage may correspond to a common voltage (Vcom) for the display.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 17, 2022
    Assignee: Intel Corporation
    Inventors: Dongyeung Kwak, Ramon C. Cancel Olmo, Jue Li, Thomas A. Nugraha, John Lang
  • Patent number: 11328641
    Abstract: A shift register unit, a driving method thereof, a gate driving circuit, and a display device are provided. The shift register unit includes an input branch and a reset branch; the input branch is configured to form or disconnect a first path between a first scan voltage terminal and a pull-up node under control of a potential of a first control terminal. The reset branch is configured to form or disconnect a second path between a second scan voltage terminal and the pull-up node under control of a potential of a second control terminal.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: May 10, 2022
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., Boe Technology Group Co., Ltd.
    Inventors: Zhiyang He, Mindong Zheng, Youlu Li, Yongxian Xie, Qiang Liu, Hui Wang
  • Patent number: 11322549
    Abstract: A display device includes a substrate including a display area and a non-display area, a pixel unit provided in the display area, and including a first pixel column including a plurality of pixels and a second pixel column including a plurality of pixels displaying a different color from a color of the first pixel column, and data lines which are respectively connected to the first pixel column and the second pixel column, and respectively apply data signals to the first pixel column and the second pixel column, wherein the data line connected to the first pixel column includes sub lines and the data line connected to the second pixel column includes sub lines.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: May 3, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Deuk Jong Kim, Ji Hye Heo, Za Il Lhee, Mi Na Jung
  • Patent number: 11315495
    Abstract: A gate driving circuit including a controller for providing a first carry signal to a control node, a first pull-up portion for outputting a first clock signal as a first gate signal in accordance with a signal provided to the control node, and a second pull-up portion for outputting a second clock signal with a phase that is different from the first clock signal as a second gate signal in accordance with the signal provided to the control node.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: April 26, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kang Nam Kim, You Mee Hyun, Beom Jun Kim, Jong Hwan Lee, Sung Hoon Lim, Duc Han Cho
  • Patent number: 11307707
    Abstract: A scan shift circuit and its driving method, a touch shift circuit and its driving method, a gate driving circuit, a touch driving circuit and a display apparatus are disclosed. The scan shift circuit includes an input circuit, a reset circuit, a latch control circuit and a scan signal output circuit. The touch shift circuit includes an input circuit, a reset circuit, a latch control circuit, a cascade signal output circuit, a touch driving circuit and a touch signal output circuit.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: April 19, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventor: Fei Huang
  • Patent number: 11307614
    Abstract: System and method for displaying digital content on a display device, including at least one digital content item configured to be displayed on the display device, a service cloud, including a server, first memory, and first processor, configured to store and manage digital content, and an application, configured to run on a computer with second memory, second processor, and user input device, and configured to communicate via the Internet with the display device and service cloud. In response to a signal from the user input device, the application detects a display of a digital content item on the interface, selects the item display from a virtual representation of a digital library on the interface, and moves the item display to a virtual representation of the display device on the interface. The service cloud processor sends the item to the display device.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 19, 2022
    Assignee: Videri Inc.
    Inventors: Marc Trachtenberg, Francois Gariepy
  • Patent number: 11308831
    Abstract: A display panel is provided. The display panel may include a glass, a driver formed on a first surface of the glass, and a circuit layer formed on a second surface of the glass. The circuit layer may include a plurality of pixel circuits configured to drive a plurality of micro light emitting diodes (LEDs) forming a plurality of pixels of the display panel; a plurality of driving circuits which are respectively connected to the driver via wiring formed over at least one side surface of the glass, and configured to supply driving signals to the plurality of pixel circuits based on signals received from the driver; and a plurality of redundancy driving circuits connected to the plurality of respective driving circuits in parallel, the plurality of redundancy driving circuits having a same circuit structure as the plurality of respective driving circuits.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: April 19, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youngki Jung, Jinhee Kang, Jinho Kim, Sangmin Shin, Chulgyu Jung
  • Patent number: 11308839
    Abstract: A signal generating circuit for providing signals to a gate driving circuit of a display device is provided. The gate driving circuit has plural shift registers each having a main circuit unit and a discharge circuit unit. The discharge circuit units of at least some of the shift registers are configured to receive a pull-down control signal. The main circuit unit of a first stage shift register of the shift registers is configured to receive a starting signal. The signal generating circuit includes a first circuit unit that is configured to output the pull-down control signal and the starting signal to the gate driving circuit. The starting signal switches from a disabling voltage level to an enabling voltage level at a first time point. The pull-down control signal switches from a disabling voltage level to an enabling voltage level at a second time point before the first time point.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: April 19, 2022
    Assignee: HannStar Display Corporation
    Inventors: Yu-Cheng Lin, Chien-Ting Chan, Chih-Hsuan Lee
  • Patent number: 11308888
    Abstract: A pixel scan drive circuit including a switch unit, a pull-up output unit and a pull-down output unit is provided. In a scan signal output phase of a scanning cycle, the pull-down output unit outputs a first reference voltage in a scan signal to an output end according to a clock signal. In a maintenance phase of the scanning cycle, the switch unit controls the voltage of a pull-down node according to a switch control signal, thereby controlling the pull-down output unit to stop outputting the first reference voltage. In the maintenance phase, the pull-up output unit outputs a second reference voltage in the scan signal. The second reference voltage controls the pixel units to stop receiving the image data. Transistors in the switch unit are of different types from transistors in the pull-up output unit and the pull-down output unit. An array substrate and a display terminal are provided.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: April 19, 2022
    Assignee: SHENZHEN ROYOLE TECHNOLOGIES CO., LTD.
    Inventors: Ze Yuan, Jiahao Kang, Shaowen Wang, Yao Yan
  • Patent number: 11308838
    Abstract: A shift register includes a first transistor, a second transistor, a pull-up node and a switch sub-circuit. A control electrode of the first transistor is connected to a signal input terminal, a first electrode of the first transistor is connected to a first voltage terminal, and a second electrode of the first transistor is connected to a first control node. A control electrode of the second transistor is connected to a reset signal terminal, a first electrode of the second transistor is connected to a second voltage terminal, and a second electrode of the second transistor is connected to the first control node. The switching sub-circuit is connected to the first control node and the pull-up node, and is configured to control a line between the first control node and the pull-up node to be closed and opened.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 19, 2022
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhichong Wang, Fuqiang Li, Jing Feng, Peng Liu, Xinglong Luan
  • Patent number: 11308865
    Abstract: An electroluminescent display device according to the present disclosure includes a first pixel, a second pixel sharing a data line, a reference voltage line, and an initialization voltage line with the first pixel and disposed adjoining the first pixel, a first gate line provided to supply a first gate control signal to the first pixel, a second gate line provided to supply a second gate control signal to the second pixel, a third gate line provided to supply a third gate control signal to the first and second pixels, and a fourth gate line and provided to supply a fourth gate control signal to the first and second pixels, wherein a first driving element included in the first pixel and a second driving element included in the second pixel have different channel widths.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: April 19, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: In Su Hwang, Dong Ik Kim
  • Patent number: 11302236
    Abstract: A display device includes: a pixel unit including pixels connected to data lines and scan lines, and signal output lines, where at least one signal output line of the signal output lines is connected to each of the scan lines through a contact point; a data driver disposed at one side of the pixel unit to drive the data lines; a scan driver disposed at the one side of the pixel unit together with the data driver to drive the scan lines; and a timing controller controlling the data driver and the scan driver. The data driver includes: output buffers outputting data signals to the data lines, respectively; and a slew rate controller adjusting a slew rate of the data signals by controlling a bias value supplied to the output buffers in units of pixel rows based on positions of the pixels and a change in the data signals.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: April 12, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Hyun Pyun, Min Young Park, Eun Jin Choi
  • Patent number: 11302260
    Abstract: A signal processing circuit and a driving method thereof, a display panel and a driving method thereof, and a display device are disclosed. The signal processing circuit includes a shunting circuit and N buffer circuits. The shunting circuit includes N output nodes, the N buffer circuits are respectively connected with the N output nodes. The shunting circuit is configured to output input signals to the N output nodes respectively at N different time points in response to control signals. Each of the N buffer circuits is configured to buffer and output the input signal received by a corresponding output node. N is an integer great than or equal to 2.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 12, 2022
    Assignees: MIANYANG BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Chieh Hsing Chung
  • Patent number: 11302262
    Abstract: An organic light-emitting display device includes: a data driver configured to divide one frame into an odd-numbered sub-frame and an even-numbered sub-frame, to divide frame data for implementing the one frame into odd-numbered sub-frame data and even-numbered sub-frame data, to provide the odd-numbered sub-frame data to the data lines in the odd-numbered sub-frame, and to provide the even-numbered sub-frame data to the data lines in the even-numbered sub-frame; an odd-numbered scan driver electrically connected to odd-numbered scan lines to provide an odd-numbered scan signal to the odd-numbered scan lines in the odd-numbered sub-frame; an even-numbered scan driver electrically connected to even-numbered scan lines to provide an even-numbered scan signal to the even-numbered scan lines in the even-numbered sub-frame; an emission driver to provide an emission signal to emission line groups formed by grouping the emission lines by two adjacent emission lines in the odd-numbered sub-frame and the even-numbered
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: April 12, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hai-Jung In, Won Kyu Kwak, Jae-Sic Lee
  • Patent number: 11295651
    Abstract: Counter, pixel circuit, display panel, display device are provided. The counter includes: start-up circuit generating and outputting start-up signal by clock signal; M first and M second combinational logic circuits, alternate and cascaded, where M is integer no less than 1. Input terminal of first combinational logic circuit is coupled to output terminal of start-up circuit or second combinational logic circuit of previous stage, input terminal of second combinational logic circuit is coupled to output terminal of first combinational logic circuit of previous stage. Clock signal terminals of first, second combinational logic circuits are for inputting clock signal. First combinational logic circuit is for outputting clock signal in first time period and continuously outputting low level signal in second time period. Second combinational logic circuit is for outputting inverted signal of clock signal in third time period and continuously outputting low level signal in fourth time period.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: April 5, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Junrui Zhang, Xuehui Zhu, Lijia Zhou, Zhidong Wang, Quanguo Zhou, Yungchiang Lee, Meng Guo, Jiuyang Cheng, Zongze He, Qin Liu
  • Patent number: 11297289
    Abstract: A structured light projector and a method for structured light projection are disclosed. The structured light projector includes a projection module, a processor. The projection module is configured to project an optical pattern onto a region of space, and includes a light source, a diffractive optical element and a liquid crystal lens. The light source is configured to generate a light beam. The diffractive optical element is configured to convert the light beam into the optical pattern. The liquid crystal lens is interposed between the light source and the diffractive optical element, and is configured to collimate the light beam. The processor is configured to generate a control signal depending on an environment temperature of the projection module for controlling the liquid crystal lens.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: April 5, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Hsueh-Tsung Lu, Ching-Wen Wang, Cheng-Che Tsai, Wu-Feng Chen
  • Patent number: 11289047
    Abstract: A display device includes: a frame data counter configured to calculate frame information of an image displayed in a display area; a speed controller configured to determine a moving speed of the image; and a scenario determiner configured to determine a moving direction and moving amount of the image.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: March 29, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Ki Chun, Soon Dong Kim, Hae Kwan Seo, Seung Jae Lee, Jun Gyu Lee, Bong Ju Jun
  • Patent number: 11290103
    Abstract: Charge transfer between gate terminals of sub-threshold current reduction circuit (SCRC) transistors and related apparatuses and methods is disclosed. An apparatus includes a pull-up SCRC transistor, a pull-down SCRC transistor, and a charge transfer circuit. The pull-up SCRC transistor includes a pull-up gate terminal. The pull-down SCRC transistor includes a pull-down gate terminal. The charge transfer circuit is electrically connected between the pull-up gate terminal and the pull-down gate terminal. The charge transfer circuit is configured to transfer charge between the pull-up gate terminal and the pull-down gate terminal.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: March 29, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Hiroshi Akamatsu, Yuan He, Toru Ishikawa
  • Patent number: 11282441
    Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: March 22, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Taek Kim, Sang Su Han, Kyun Ho Kim, Hyung Keun Park, Joon Suk Baik, Se Keun Lee
  • Patent number: 11276352
    Abstract: A display device includes: a plurality of pixels, each of which is connected to a corresponding one of a plurality of scan lines, and a scan driver including a plurality of stages, each of which supplies a scan signal to a corresponding one of the scan lines, each of the stages includes: a node controller which supplies a second output signal of a previous stage to a first node based on an input signal of a first clock terminal or a first output signal of the previous stage, a first inverter connected between the first node and a second node, a buffer which supplies a voltage of the second node to a first output terminal based on an input signal of a second clock terminal, and a second inverter connected between the first output terminal and a second output terminal.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: March 15, 2022
    Assignees: SAMSUNG DISPLAY CO., LTD., KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP
    Inventors: Tae Hoon Yang, Joon Ho Lee, Kee Chan Park, Ki Bum Kim, Hyang A Park, Jong Chan Lee, Woong Hee Jeong
  • Patent number: 11270660
    Abstract: A data driver includes a digital to analog converter configured to receive a reference gray voltage and image data, and configured to generate gray voltages corresponding to the image data, and an output buffer including a plurality of buffer circuits connected to an output terminal of the digital to analog converter, and configured to selectively receive one of the gray voltages.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: March 8, 2022
    Assignees: Samsung Display Co., Ltd., Sogang University Research Foundation
    Inventors: Moon Sang Hwang, Weon Jun Choe, Jun Sang Park, Tai Ji An, Seung Hoon Lee
  • Patent number: 11270643
    Abstract: A non-rectangular display includes: a plurality of first signal lines extending along a first direction; a plurality of DC voltage lines extending along the first direction; and a plurality of second signal lines extending along the first direction, wherein a first DC voltage line of the plurality of DC voltage lines is between a first line of the plurality of first signal lines and a second line of the plurality of second signal lines, a second DC voltage line of the plurality of DC voltage lines is between a third line of the plurality of first signal lines and a fourth line of the plurality of second signal lines, and the first and third lines are adjacent to each other, or the second and fourth lines are adjacent to each other.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: March 8, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Kyu Lee, Tae Hoon Kim, Jae Du Noh
  • Patent number: 11271068
    Abstract: A display device includes a substrate including a first pixel region, a second pixel region connected to the first pixel region and having a smaller area than the first pixel region, and a peripheral region surrounding the first and second pixel regions, a first pixel in the first pixel region, a second pixel in the second pixel region, a first line connected to the first pixel, a second line connected to the second pixel, an extending line extending to the peripheral region and connected to any one of the first and second lines, a dummy part overlapping with the extending line for compensating a difference between load values of the first and second lines, a first power line in the peripheral region, and a conductive pattern overlapping with at least one region of the dummy part, and electrically connected to the first power line.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: March 8, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang Wan Kim, Hyung Jun Park, Jae Yong Lee, Byung Sun Kim, Su Jin Lee
  • Patent number: 11263949
    Abstract: A display panel, a control method and a display apparatus are provided. The display panel includes a first display area having a notched boundary and a second display area. The first display area includes a first pixel unit group comprising X white sub-pixel or sub-pixels and Y first single color sub-pixels, and the second display area includes a second pixel unit group comprising Y second single color sub-pixels, where X is an integer of at least 1 and Y is an integer of at least 1.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: March 1, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Gaowei Chen, Jiaqiang Wang, Chao Yu, Shengwei Yang, Jinlong Zheng, Xiaojuan Gao, Xiance Liu, Fuan Zhu
  • Patent number: RE49135
    Abstract: A flat panel display device formed in a pentile structure is provided, which includes a pixel portion and a lighting tester. The pixel portion includes a first pixel column, a second pixel column and a third pixel column. In the first pixel column, first pixels for displaying a first color and second pixels for displaying a second color are alternately arranged in a direction the data lines. In the second pixel column, first and second pixels arranged in reverse order of the first pixel column in a direction parallel to the data lines. In the third pixel column, third pixels for displaying a third color are arranged in a direction parallel to the data lines. The lighting tester applies a first voltage to the first pixel column and applies a second voltage to the second pixel column during a first time period. The lighting tester applies the second voltage to the first pixel column and applies the first voltage to the second pixel column during a second time period.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: July 12, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ok-Kyung Park, Ji-Hyun Ka