Patents Examined by Michael J Eurice
  • Patent number: 11410607
    Abstract: An organic light emitting diode display device includes a display panel including a plurality of pixels, and a panel driver configured to drive the display panel. Each pixel includes a driving transistor, a compensating transistor including first and second compensating sub-transistors coupled in series between a gate node and a drain of the driving transistor, a storage capacitor, and an organic light emitting diode. The panel driver calculates an average representative gray level of input image data in a plurality of frame periods, determines a voltage level of a node controlling voltage based on the average representative gray level, and provides the node controlling voltage to each of the plurality of pixels to control a voltage of a node between the first and second compensating sub-transistors.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: August 9, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jinyoung Roh, Hongsoo Kim, Sehyuk Park, Hyojin Lee, Jaekeun Lim
  • Patent number: 11402961
    Abstract: A conductive member has a wiring portion, and the wiring portion has a wiring pattern in which straight line wirings each being composed of a plurality of thin metal wires arranged in parallel in one direction are overlapped in two or more directions. The wiring pattern is a separate-direction non-equal pitch wiring pattern in which the average pitch of the straight line wiring in at least one direction is different from the average pitch of the straight line wiring in at least one different direction. The conductive member has a wiring pattern having less moiré than an equal pitch wiring pattern, particularly a wiring pattern capable of reducing both regular moiré and irregular moiré (noise). A conductive film, a display device, and a touch panel each include the conductive member.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: August 2, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Kimito Katsuyama, Masaya Nakayama
  • Patent number: 11380259
    Abstract: The preset disclosure relates to a pixel driving circuit, a pixel driving method, an array substrate and a display device. The pixel driving circuit includes a pixel driving unit and an optical detection unit. The pixel driving unit is configured to drive a light-emitting element included in a pixel unit to emit light. The optical detection unit includes a photoelectric conversion sub-circuit and a switch control sub-circuit. The photoelectric conversion sub-circuit is configured to receive light emitted from the light-emitting element, and convert the light into an electrical signal. The switch control sub-circuit is configured to output the electrical signal under control of a first scanning signal. The pixel driving unit is configured to adjust brightness of the light emitted from the light-emitting element according to the electrical signal.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: July 5, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cuili Gai, Yicheng Lin
  • Patent number: 11380264
    Abstract: The present disclosure provides a pixel circuit, a method for driving the pixel circuit and a display device. A driving module of the pixel unit circuit includes a pixel compensation unit configured to transmit a read-control signal to the corresponding row of read-control line and transmit a gate drive-control signal to the gate drive circuit. The gate drive circuit is configured to, based on the gate drive-control signal, generate a plurality of gate drive signals, thereby controlling the rows of gate lines to be turned off in a reading period. One gate drive signal is corresponding to one row of gate line.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: July 5, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Xue Dong, Haisheng Wang, Yingming Liu, Changfeng Li, Wei Liu
  • Patent number: 11380260
    Abstract: An electronic device comprises a controller. The controller is configured to provide a first signal to a display of the electronic device to turn off the display. The controller is also configured to provide a second signal to the display to alter a gate source voltage of a drive transistor coupled to a light emitting diode (LED) of a pixel of the display while the display is turned off.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 5, 2022
    Assignee: Apple Inc.
    Inventors: Junhua Tan, Kingsuk Brahma, Jie Won Ryu, Shengkui Gao, Shiping Shen, Majid Gharghi, Hyunwoo Nho, Injae Hwang, Kavinaath Murugan, Sun-Il Chang, Chin-Wei Lin, Hyunsoo Kim, Rui Zhang, Jesse Aaron Richmond, Yun Wang, Hung Sheng Lin
  • Patent number: 11373601
    Abstract: The present disclosure provides a display substrate, a manufacturing method and a display device. The display substrate includes a scan driving circuit, at least one shift register unit includes an output circuit, a first energy storage circuit, and a first leakage prevention circuit; the scan driving circuit also includes a first voltage signal line and a second voltage signal line; a first voltage signal line is located on a side of the second voltage signal line away from the display area; the output circuit is respectively coupled to the first voltage signal line and the second voltage signal line, the first energy storage circuit is respectively coupled to the output circuit and the second voltage signal line, the first leakage prevention circuit is coupled to the output circuit; the output circuit is arranged between the first voltage signal line and the second voltage signal line.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: June 28, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lingran Wang, Jun Yan, Wenhui Gao
  • Patent number: 11373597
    Abstract: A display device includes a display panel, a driving circuit, and a power supply. The driving circuit is connected to a plurality of pixels of the display panel through a plurality of scan line sets and a plurality of data lines, provides a plurality of scan signals to the display panel, and provides data voltages to the plurality of data lines. The power supply applies one or more power voltages to the plurality of pixels. The driving circuit enables at least two scan signals of the plurality of scan signals during a non-emission interval, partially overlapping the at least two scan signals during at least two consecutive horizontal periods.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: June 28, 2022
    Inventors: Seong Min Wang, Ji Hye Kong, Yong Ho Yang, Jeong-Soo Lee
  • Patent number: 11367397
    Abstract: A gate driver includes a first scan signal generator configured to output a logic voltage for driving of a scan transistor through a plurality of stages connected in cascade, the scan transistor performing a switching operation to transfer a data voltage to a driving transistor of a pixel, a second scan signal generator configured to output a logic voltage for driving of a sensing transistor through the plurality of stages, the sensing transistor sensing deterioration of a light emitting element of the pixel, a light emission control signal generator configured to output a logic voltage for control of a light emission control transistor of the pixel through the plurality of stages, and an initialization voltage generator driven by logic voltages received from some nodes of the first scan signal generator based on the light emission control signal generator to supply an initialization voltage to the pixel.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: June 21, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Se-Hwan Kim, Tae-Keun Lee, Min-Su Kim, Hae-Jun Park, Young-Taek Hong
  • Patent number: 11367400
    Abstract: A display device includes a display panel including a first image unit and a second image unit, a data driver which applies data voltages to the display panel, a first scan driver which applies write scan signals to the display panel, a second scan driver which applies compensation scan signals and initialization scan signals to the display panel, and a masking part connected to the second scan driver and which selectively applies the initialization scan signals to the second image unit.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: June 21, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Taehoon Kim, Soon-Dong Kim, Changnoh Yoon, Sangan Kwon, Eun Sil Yun
  • 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: 11355064
    Abstract: A pixel circuit includes an OLED, a first transistor including a gate electrode connected to a first node and an electrode connected to a third node, a capacitor including a first electrode for receiving a power supply voltage and a second electrode connected to the first node, a third transistor including a gate electrode for receiving a first gate signal, a first electrode connected to the first node, and a second electrode connected to the third node, a fourth transistor including a gate electrode for receiving a second gate signal, a first electrode connected to the first node, and a second electrode and a second gate electrode for receiving a first initialization voltage, and a seventh transistor including a gate electrode for receiving a third gate signal, a first electrode for receiving a second initialization voltage, and a second electrode connected to an anode electrode of the OLED.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: June 7, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joo-Hee Jeon, Gun-Hee Kim, Ju-Won Yoon, Seung-Chan Lee, Sang-Ho Park, Joo-Sun Yoon
  • Patent number: 11348518
    Abstract: A method for driving a display panel and a display device are provided. The driving method includes supplying, during a data writing stage of each row of pixel circuits, a driving voltage VA[i] to the data line corresponding to each of the pixel circuits in a row, and supplying a compensation voltage VS to the second node of each of the pixel circuits in the row, and VA[i]=Vdata[i]+Vth[i]+VS, where Vdata[i] is an original data voltage of an ith pixel circuit of the pixel circuits, i is a positive integer, Vth[i] is a threshold voltage of the driving transistor of the ith pixel circuit, and a range from which a value of the compensation voltage VS is selected is [?Vth_min, 0), and Vth_min is a minimum value among all of the threshold voltages of the driving transistors of the pixel circuits of the display panel.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: May 31, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wenchao Bao, Min He, Chun Cao
  • Patent number: 11348525
    Abstract: A pixel circuit, a display panel, and a display device comprising the pixel circuit. The pixel circuit comprises a light emitting element and a driving circuit. The driving circuit comprises a light emission driving circuit for driving the light emitting element to emit light, and a light sensing driving circuit for controlling the light emitting element to convert external light incident on the light emitting element into an electrical signal. The pixel circuit integrates the light emission driving circuit with the light sensing driving circuit and can achieve the light sensing function for the screen of the display device, which makes it possible to not reserve an area dedicated to a camera on the surface of the display device.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: May 31, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Liang Chen, Lei Wang, Li Xiao, Dongni Liu, Xiaochuan Chen, Minghua Xuan, Ning Cong, Detao Zhao
  • Patent number: 11348520
    Abstract: An organic light emitting display device includes a display panel including a plurality of pixels each including an organic light emitting diode, a gate driver configured to supply a gate driving signal to each of the pixels, a data driver configured to supply a data voltage to each of the pixels, a multiplexer being switched in response to an external control signal to output any one of the data voltage and a voltage supplied from a separate power supply line, and a timing controller configured to control the multiplexer to transfer the data voltage to a data line of each of the pixels in a refresh period in a low-speed driving mode and transfer the voltage from the separate power supply line to the data line of each of the pixels for at least one anode reset period in a hold period in the low-speed driving mode.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: May 31, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jae-Sung Kim, Ki-Woo Kim
  • 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: 11341915
    Abstract: A gamma voltage compensation circuit, a gamma voltage compensation method, a source driver, and a display panel are provided. The gamma voltage compensation circuit includes: a generation circuit, configured to generate a plurality of voltage compensation amounts which are in one-to-one correspondence to a plurality of standard gray scale levels; a calculation circuit, connected to the generation circuit, and configured to acquire the plurality of voltage compensation amounts and a plurality of reference gamma voltages, and to obtain a plurality of standard voltage signals based on the plurality of reference gamma voltages and the plurality of voltage compensation amounts; a gamma circuit, electrically connected to the calculation circuit, and configured to generate a plurality of compensation voltage signals based on the plurality of standard voltage signals, in which the plurality of compensation voltage signals are in one-to-one correspondence to a plurality of gray scale levels of a display panel.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: May 24, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xinshe Yin
  • Patent number: 11328499
    Abstract: There is provided a 2-stage moving average filter for a navigation device including a delta regulator and an N-taps average circuit. The delta regulator is used as a first stage to receive motion delta at a varied frequency, and combine or split the received motion delta to output a regulated motion delta at a fixed frequency. The N-taps average circuit receives and averages N regulated motion delta and outputs the averaged motion delta at a fixed frequency.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: May 10, 2022
    Assignee: PIXART IMAGING INC.
    Inventors: Zi-Hao Tan, Kevin Len-Li Lim
  • Patent number: 11322060
    Abstract: A display device is proposed, the display device including a display panel including a display panel including a plurality of unit pixels including at least two sub-pixels that share a data line and are connected to different gate lines, a driving circuit supplying a scan signal and a data voltage to first and second sub-pixels included in the unit pixel and connected to different data lines, a sensing unit connected to the first and second sub-pixels throughs a sensing line to sense operating characteristics of the first and second sub-pixels, and a timing controller controlling the driving circuit and the sensing unit to obtain sensing data corresponding to the operating characteristics and compensate the data voltage based on the sensing data.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: May 3, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Kwangmo Park, Suzy Ahn
  • Patent number: 11308892
    Abstract: The disclosure relates to an organic light emitting display device that can detect a defect in a scan transistor in the device in which the scan transistor and a sensing transistor simultaneously operate, and the device includes: an OLED in a subpixel; a driving transistor connected between the OLED and a driving voltage line; a scan transistor connected between a first node through which a data voltage is applied to the driving transistor and a data line; a sensing transistor connected between a second node between the driving transistor, the OLED, and a reference voltage line; and a defect detector for applying the data voltage in a state in which both the scan transistor and the sensing transistor are turned off and then detecting an amount of charges charged in a parasitic capacitor of the OLED to determine whether the scan transistor is defective due to foreign substances.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: April 19, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Hyun Cho, Jae-Deok Ko, Seong-Eok Han
  • Patent number: 11302266
    Abstract: An organic light emitting diode (OLED) display device is disclosed. In the OLED display device, a timing controller compares reference voltages output from driving integrated circuits (driving ICs). When a deviation occurs in the reference voltages, the timing controller compensates for the deviation of reference voltages. The OLED display device includes a display panel having reference voltage lines and a plurality of pixels, a data driving circuit having a plurality of driving ICs to generate reference voltages and to supply the reference voltages to the reference voltage lines of the display panel, and a timing controller for comparing reference voltages respectively output from the driving ICs to the display panel, thereby controlling the driving ICs such that the reference voltages respectively output from the driving ICs are equalized.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: April 12, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Jea-Hun Jung