Synchronizing Means Patents (Class 345/213)
  • Patent number: 11450270
    Abstract: A pixel circuit and a method of driving the same, and a display device. The pixel circuit includes a plurality of pixel compensation circuits, and each pixel compensation circuit can be connected to M light-emitting units located in the same column. Each light-emitting control signal terminal of the M light-emitting control signal terminals included in each light-emitting control signal terminal group may be connected to a pixel compensation circuit group (i.e., K rows of pixels compensation circuits).
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: September 20, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Liang Chen, Lei Wang, Dongni Liu, Li Xiao, Minghua Xuan, Xiaochuan Chen, Shengji Yang, Pengcheng Lu, Detao Zhao, Ning Cong
  • Patent number: 11443690
    Abstract: Disclosed is an electronic device comprising at least one sensor, a communication circuit, a display, and at least one processor operationally connected to the display, wherein the at least one processor is configured to: display, on the display, a watch screen including a fixed element displayed at a designated location on the display, a repetitive element displayed on the basis of at least a designated rule, and a changing element associated with information obtained through the at least one sensor or received through the communication circuit; generate first data on the basis of at least one of the designated rule or the shape of the repetitive element; generate second data based on at least one of the fixed element or the changing element, in response to the changing element changing from a first value to a second value; and generate first deterioration information on the basis of the first data, the second data, and the duration over which the changing element maintains the first value.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yohan Lee, Seungkyu Choi, Yunpyo Hong, Hanyuool Kim, Jongkon Bae, Younghee Ha, Dongkyoon Han
  • Patent number: 11430385
    Abstract: A pixel compensation circuit including a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first capacitor, a second capacitor, and an organic light-emitting diode, each of the first transistor to the sixth transistor including a drain, a source and a gate.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: August 30, 2022
    Assignee: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Di Geng, Yue Su, Ling Li, Nianduan Lu, Ming Liu
  • Patent number: 11430387
    Abstract: In a display device that performs external compensation, pixel circuits are classified into specific and general pixel circuits. When display is restarted, a current measurement circuit, along with a drive circuit, measures a current flowing through a drive transistor in the specific pixel circuit as a first current. A correction circuit obtains a recovery ratio for a characteristic of the drive transistor on the basis of an amount of the first current and corrects a video signal for each of the specific and general pixel circuits using the recovery ratio. Thus, when display is restarted, a suitably compensated image is displayed.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: August 30, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Masafumi Ueno, Chie Toridono
  • Patent number: 11394372
    Abstract: This application relates to a wide band gap (WBG) power semiconductor system. In one aspect, the system includes a controller configured to generate a switching control signal and a gate driver configured to receive the switching control signal and generate a switching drive signal in response to the switching control signal. The system also includes a WBG power semiconductor device coupled to the gate driver, comprising a gate terminal for receiving the switching drive signal, and configured to be switched in response to the switching drive signal. The switching drive signal has one of three signal levels: a first voltage level higher than a zero voltage level, a second voltage level lower than the zero voltage level, and the zero voltage level at an arbitrary instant. As a result, the gate driver drives the WBG power semiconductor device with the three voltage levels.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: July 19, 2022
    Assignee: Korea Electronics Technology Institute
    Inventors: Dongmyoung Joo, Junhyuk Choi, Joonsung Park, Jinhong Kim, Byongjo Hyon, Yongsu Noh
  • Patent number: 11368650
    Abstract: A system includes a downstream facing port (DFP) coupled to a video source, an upstream facing port (UFP) coupled to a video sink, and a cable. The cable includes a first end that is connected to the DFP and a second end that is connected to the UFP. The cable is configured to carry a differential auxiliary transmission signal and detect polarity in the differential auxiliary transmission signal.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: June 21, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Charles Michael Campbell, Anwar Sadat, Mark Edward Wentroble
  • Patent number: 11355087
    Abstract: A method for displaying graphical content in a playback device (DISP), the graphical content being displayed and erased periodically on the display device according to successive cycles that take place at a predetermined frequency (Fd) and in that the successive display periods each have a duration (T1) comprised in an interval of values ranging from 15 to 30% of the duration (T) of the cycles that have taken place.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: June 7, 2022
    Assignees: Université de Rennes 1
    Inventors: Albert Le Floch, Guy Ropars
  • Patent number: 11333693
    Abstract: A frequency measurement apparatus includes: a measurement period setting circuit that sets a measurement period based on a reference clock signal; a first counter circuit that counts the number of pulses of the reference clock signal in a period based on an input signal during the measurement period; a second counter circuit that counts the number of pulses of the input signal during the measurement period; a first frequency calculation circuit that calculates a first frequency; a second frequency calculation circuit that calculates a second frequency; and a frequency selection circuit that selects the first frequency or the second frequency as a frequency of the input signal.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: May 17, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Keisuke Hashimoto
  • Patent number: 11328681
    Abstract: In a display device including a display panel, a plurality of scanning line drive circuits formed on the display panel, each driving scanning lines individually, and a display control circuit, the scanning line drive circuit outputs a state signal, and the display control circuit determines whether a state is normal based on the state signal, performs control, in a normal state, for making the plurality of scanning line drive circuits operate in turn, and performs control, in an abnormal state, for stopping an operation of an abnormal scanning line drive circuit and for making a normal scanning line drive circuit operate in turn. A last-stage output signal of the scanning line drive circuit is used as the state signal. With this, a display device capable of lengthening time until an abnormality occurs and keeping display quality even when the abnormality occurs is provided.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 10, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kohji Ueno
  • Patent number: 11315520
    Abstract: A driving circuit for driving a display panel is provided. The driving circuit includes a source driver. The source driver is configured to be controlled by a timing controller. The source driver is configured to adjust at least one of an operation frequency and a receiving bandwidth of a source driving circuit of the source driver when at least one of the timing controller and the source driver detects that an interference event occurs.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: April 26, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jen-Chieh Hu, Chin-Hung Hsu
  • Patent number: 11315471
    Abstract: A shift register unit, a driving device, a display device and a driving method are provided. The shift register unit includes an input circuit, a first pull-up node reset circuit, an output circuit, an output reset circuit, a pull-down node control circuit and a power-on initialization circuit. The power-on initialization circuit is configured to reset the pull-up node in response to a power-on initialization signal.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: April 26, 2022
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lele Cong, Jian Sun, Zhen Wang
  • Patent number: 11315472
    Abstract: A shift register unit, a gate driving circuit and a driving method thereof, a display device. The shift register unit includes: a first input circuit configured for outputting a voltage of a first voltage terminal to a pull-up node under a control of a first signal terminal; a second input circuit configured for outputting a voltage of a second voltage terminal to the pull-up node under a control of a second signal terminal; an output circuit configured for outputting a clock signal of a clock signal terminal to the signal output terminal under a control of the pull-up node; a pull-up node reset circuit configured for outputting a voltage of the third voltage terminal to the pull-up node under a control of the third signal terminal.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: April 26, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lei Mi, Yanchen Li, Yanna Xue
  • Patent number: 11307698
    Abstract: Embodiments of the present disclosure relate to touch display devices, driving circuits, and driving methods, and more specifically, to a touch display device, a driving circuit, and a driving method for enabling the functionality of a micro control unit to be minimized and power consumption to be reduced by allowing one or more combined integrated circuits to generate a touch sensing control signal and provide the generated signal to a plurality of combined integrated circuits. Further, according to embodiments of the present disclosure, touch display devices, driving circuits, and driving methods are provided for enabling power consumption of a touch power integrated circuit to be reduced by using a touch sensing control signal generated by one or more combined integrated circuits as a load-free driving signal.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: April 19, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Youngwoo Jo, HyeongWon Kang
  • Patent number: 11308854
    Abstract: A shift register unit, a driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a first input circuit, a second input circuit, an output circuit, a first control circuit, and a second control circuit. The first input circuit is electrically connected to a first node, and is configured to transmit an input signal to the first node; the second input circuit is electrically connected to the first node and a second node, and is configured to control a level of the second node; the first control circuit is electrically connected to the second node and a third node, and is configured to control a level of the third node; and the output circuit is electrically connected to the third node and an output terminal, and is configured to output an output signal to the output terminal.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: April 19, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Can Zheng
  • Patent number: 11302242
    Abstract: A shift register unit, a driving method thereof, a gate driving circuit and a display device are provided. The shift register unit includes a reset circuit and a reset control circuit, the reset circuit is connected to a pull-up node, and configured to reset a potential of the pull-up node during a reset stage; and the reset control circuit is connected to the reset circuit and configured to maintain the potential of the pull-up node at a first voltage during an output stage of each display period.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: April 12, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shuainan Liu, Lidong Wang, Huan Bao, Jianye Tang, Desheng Xiang
  • Patent number: 11294508
    Abstract: According to an embodiment, it is possible to efficiently use resources by restoring a clock from an image signal including a clock in image data and using the restored clock in a section in which the image signal is not received.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: April 5, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Yong Sung Ahn
  • Patent number: 11275529
    Abstract: Maintenance management on backup storage systems. Specifically, the disclosed method and system derive backup storage system load from a collection of profiled load factoring features. The backup storage system load may subsequently drive whether maintenance operations may be deferred to projected non-peak load times or, alternatively, may be permitted to proceed.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: March 15, 2022
    Assignee: EMC IP Holding Company LLC
    Inventors: Gururaj Kulkarni, Priyank Tiwari, Michal Jacek Drozd
  • Patent number: 11270637
    Abstract: A display device includes: an organic light emitting diode (OLED); a pixel circuit configured to control an amount of a current flowing from a first power voltage to the OLED; and a gate line and a data line that are connected to the pixel circuit, the pixel circuit including: an auxiliary transistor including a gate electrode electrically connected to the data line and a first electrode and a second electrodes connected to the gate line, the first electrode and the second electrode of the auxiliary transistor being electrically connected to each other.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: March 8, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Won Park, Seung-Kyu Lee, Hyun Woong Kim
  • Patent number: 11272245
    Abstract: A video output device has a first cable which connects an input terminal of a display and the input/output terminal of the video output device. A second cable connects the input/output terminal of an information device and the input/output terminal of the video output device. The input terminal of the display has an input terminal section which is connected to an embedded termination power source through a termination resistor. Each of the input/output terminals of the information device and video output device has an output terminal section connected through a capacitor. The input/output terminal of the video output device has functions of detecting whether the input/output terminal of the video output device is connected to the input terminal of the display apparatus through the first cable or the input/output terminal of the video output device is connected to the input/output terminal of the information device through the second cable.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: March 8, 2022
    Assignee: MAXELL, LTD.
    Inventors: Kazuhiko Yoshizawa, Nobuaki Kabuto
  • Patent number: 11263939
    Abstract: Embodiments of the present application disclose various display control methods and apparatuses and various display devices, wherein one of the display control methods comprises: adjusting display pixel density of at least one display unit in a display array as uneven distribution; and displaying multiple first images respectively via multiple display units in the adjusted display array, to splice and/or superimpose the multiple first images to be displayed as a second image, the multiple display units comprising the at least one display unit. The present application can increase the actual utilization rate of display pixels of the display array, and improve splicing and/or image local display quality.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: March 1, 2022
    Assignee: BEIJING ZHIGU RUI TUO TECH CO., LTD.
    Inventors: Liang Zhou, Lin Du
  • Patent number: 11250751
    Abstract: Some embodiments of the present disclosure provide a shift register unit, a gate driver, a driving method thereof and a display device. The shift register unit includes: an output circuit, configured to receive a clock signal and output the clock signal to an output signal terminal under control of a voltage of a pull-up control node; a pull-down control circuit, configured to receive a control voltage signal and control the voltage of the pull-up control node and a voltage of the output signal terminal according to the control voltage signal; and an output control circuit, configured to receive a first voltage signal and the control voltage signal, and control the voltage of the output signal terminal in response to the first voltage signal and the control voltage signal.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: February 15, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tao Li, Liugang Zhou, Ke Dai, Yizhan Han, Jianwei Sun, Yulong Xiong
  • Patent number: 11222601
    Abstract: A display panel includes: a plurality of pixels connected to a plurality of data lines and a peripheral area at the periphery of the display area; a first channel group including a plurality of first shared channels respectively connected to shared data lines among the data lines; a second channel group including a plurality of second shared channels respectively connected to the shared data lines; a first source driver connected to the first channel group, the first source driver being configured to supply data signals to the shared data lines through the first channel group; and a second source driver connected to the second channel group, the second source driver being configured to supply the data signals to the shared data lines through the second channel group, wherein the first channel group and the second channel group forms a pair to be commonly connected the shared data lines.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: January 11, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Tae Kim, Sun Koo Kang
  • Patent number: 11217150
    Abstract: The present application discloses a gate driver on array (GOA) circuit of a display panel. The GOA circuit includes a first GOA unit comprising a unit-circuitry structure having a pull-up node commonly coupled to three output transistors to control outputting of a first set of three gate-driving signals respectively to a first set of three gate lines associated with the display panel. The GOA circuit additionally includes a second GOA unit comprising a substantially same unit-circuitry structure cascaded with the first GOA unit and configured to control outputting a second set of three gate-driving signals respectively to a second set of three gate lines associated with the display panel. Moreover, the GOA circuit includes a capacitor connected from one in the second set of three output terminals of the second GOA unit to the pull-up node of the first GOA unit.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: January 4, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Mingfu Han, Guangliang Shang, Xing Yao, Haoliang Zheng
  • Patent number: 11217180
    Abstract: A display device includes: a display panel including a plurality of pixels; a power supply configured to provide a power supply voltage to the display panel; and a controller configured to control the power supply, the controller including: a motion calculation block configured to calculate a motion amount of image data based on the image data in a previous frame and the image data in a current frame, and to determine a motion gain based on the motion amount of the image data; a maximum gray determination block configured to determine a maximum gray level of the image data in the current frame; a voltage drop calculation block configured to calculate a voltage drop amount in the display panel; and a power supply voltage determination block configured to determine an initial voltage level of the power supply voltage.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: January 4, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventor: Seok Ha Hong
  • Patent number: 11210017
    Abstract: A computation device includes a buffer memory which provides first to b input feature sets to the computation unit. The buffer memory includes first to nth memories, and configured to divide and store the first to nth input feature sets each including a plurality of features in the first to nth memories, respectively. The plurality of features of one input feature set is divided and stored into the first to nth memories. Features having the same turn in the first to nth input feature sets are stored one by one in the first to nth memories.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: December 28, 2021
    Assignees: SK hynix Inc., SK Telecom Co., Ltd.
    Inventors: Yong Sang Park, Seok Joong Hwang
  • Patent number: 11195491
    Abstract: Power consumption of a display device is reduced by controlling power supplies in driving sections and in non-driving sections to be different.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: December 7, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Jung Min Choi, Hong Kyu Choi, Seong Sik Yoon, Jung Hyun Tark
  • Patent number: 11184011
    Abstract: Systems and methods are disclosed for an audio processor that includes a clock detection circuit and a clock bypass circuit. According to various embodiments, the clock detection circuit can check and indicate the status of a main clock and upon detection of a loss of the main clock, the clock bypass circuit can switch the source of the main clock to an alternate source such as an on chip oscillator allowing the system to gracefully recover from the clock loss event.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 23, 2021
    Assignee: Knowles Electronics, LLC
    Inventors: Christopher K. Wolf, Frederic Denis Raynal
  • Patent number: 11158276
    Abstract: A driving method for a liquid crystal display panel is provided. The driving method in a first stage of the N+1th frame makes the first to the mth scan lines respectively control the first row to the mth row of subpixels to be sequentially turned on to make the m+1th to the 2mth of the scan lines respectively control the m+1th row to the 2mth row of the subpixels to be sequentially turned on, and transmits the overdrive voltage corresponded to the overdrive grayscale value to the subpixel during each subpixel being turned on; and in a second stage of the N+1th frame, does same as the first stage before transmits the overdrive voltage, and then transmits the driving voltage corresponded to the second grayscale value to the subpixel during each subpixel being turned on. Furthermore, the nth scan line and the n+mth scan line are simultaneously turned on.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: October 26, 2021
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jianfeng Xiao
  • Patent number: 11145232
    Abstract: An integrated circuit for driving a display panel and an anti-interference method are provided. The integrated circuit can include a source driving circuit and an anti-interference circuit. The source driving circuit includes a receiving circuit configured to receive an input signal including image data and process the input signal based on at least one operation parameter to generate output data. The anti-interference circuit is coupled to the receiving circuit. The anti-interference circuit can determine whether an interference event occurs to the input signal based on the input signal or the output data to obtain a determination result and determines whether to adjust the at least one operation parameter of the receiving circuit according to the determination result.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: October 12, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Hao Huang, Wei-Sheng Tseng, Yao-Hung Kuo, Hao-Wei Hung
  • Patent number: 11145264
    Abstract: A method of driving a display panel includes determining a present polarity of a pixel data signal of a present frame, generating a first compensated grayscale of the pixel data signal of the present frame using a pixel data signal of a previous frame, the pixel data signal of the present frame, and the present polarity, and displaying an image using the first compensated grayscale. The first compensated grayscale varies according to the present polarity.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: October 12, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Sik Hwang, Daecheol Kim, Yoongu Kim, Bongim Park, Ik Hyun Ahn, Woojoo Lee, Tae-Jong Jun
  • Patent number: 11139259
    Abstract: A display driving system includes a first chip and a second chip that are vertically docked; the first chip includes a first substrate and a first silicon wafer provided on a side of the first chip away from the first substrate; the second chip includes a second substrate and a second silicon wafer provided on a side of the second chip away from the second substrate; the first chip is docked with the second chip through docking of the first silicon wafer and the second silicon wafer; wherein, the first chip is configured to provide driving data, and the second chip is configured to process image data.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: October 5, 2021
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Tsang-chih Wu, Yung Chi Wen
  • Patent number: 11127369
    Abstract: Embodiments of the disclosure provide a display method, a display device, an electronic device and a computer readable storage medium. A plurality of second image data groups are obtained by performing color separation and sorting on the first image data of each layer pixel according to color information. Each of the second image data groups is synthesized, so as to obtain a plurality of synthesized layer data for the plurality of colors, and the plurality of synthesized layer data are sequentially displayed in the preset order of the colors.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: September 21, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wenhao Liu, Xiurong Wang, Yuting Zhang, Xin Duan, Lingyun Shi
  • Patent number: 11087855
    Abstract: A shift register unit, a gate drive circuit, a display device and a driving method are disclosed. The shift register unit includes a first input circuit, a second input circuit, an output circuit and an anti-crosstalk circuit. The first input circuit is configured to input a first input signal to a first node; the second input circuit is configured to input a second input signal to the first node in a situation where the second node is at a first level and to stop inputting the second input signal to the first node in a situation where the second node is at a second level; the output circuit is configured to output or not output an output signal; the anti-crosstalk circuit is configured to prevent a level of the second node from becoming the first level in a situation where the second node is at the second level.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: August 10, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yongqian Li, Xuehuan Feng
  • Patent number: 11074859
    Abstract: The OLED voltage of a selected pixel is extracted from the pixel produced when the pixel is programmed so that the pixel current is a function of the OLED voltage. One method for extracting the OLED voltage is to first program the pixel in a way that the current is not a function of OLED voltage, and then in a way that the current is a function of OLED voltage. During the latter stage, the programming voltage is changed so that the pixel current is the same as the pixel current when the pixel was programmed in a way that the current was not a function of OLED voltage. The difference in the two programming voltages is then used to extract the OLED voltage.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: July 27, 2021
    Assignee: Ignis Innovation Inc.
    Inventors: Jaimal Soni, Ricky Yik Hei Ngan, Gholamreza Chaji, Nino Zahirovic, Joseph Marcel Dionne
  • Patent number: 11074851
    Abstract: A driving apparatus capable of driving a display panel is provided. The driving apparatus can include a multiplexer and an output circuit. The multiplexer may include at least one first input terminal configured to receive information data in a first mode, at least one second input terminal configured to receive display data in a second mode, and at least one output terminal coupled to at least one input terminal of the output circuit. The output circuit can be configured to convert digital data into an analog voltage and output the analog voltage via at least one output terminal of the output circuit. The output circuit can be configured to convert the information data in the first mode and convert the display data into at least one driving voltage for driving at least one data line of the display panel in the second mode. The information data cannot be used for driving the display panel to present an image.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: July 27, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Po-Hsiang Fang, Tzong-Honge Shieh
  • Patent number: 11062633
    Abstract: An optical scanner and an optical scanning control method. The optical scanner includes a light source configured to emit light, a light deflector configured to deflect the light emitted from the light source to scan a scanning area two-dimensionally in a main scanning direction and a sub-scanning direction, and a photodetector configured to detect scanning light deflected by the light deflector to perform scanning on a detection field included in the scanning area. In the scanning area, a detection scanning area is formed by the scanning light so as to include an end of the detection field, and a size of the detection scanning area is changed. The optical scanning control method includes forming a detection scanning area by scanning light so as to include an end of a detection field included in a scanning area that is two-dimensionally scanned, and changing a size of the detection scanning area.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: July 13, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventor: Takumi Komori
  • Patent number: 11062652
    Abstract: Disclosed are a pixel circuit, a driving method, a display panel and a display device. A data writing module of the pixel circuit supplies a data signal to a gate electrode of a drive transistor and a first plate of a storage capacitor in a data writing phase. A reset module of the pixel circuit supplies a reset signal to a second plate of the storage capacitor in a data writing phase. A threshold compensation module of the pixel circuit supplies a threshold compensation signal to the second plate of the storage capacitor in a threshold compensation phase, and accordingly a potential of the first plate of the storage capacitor is adjusted to a first potential, and the drive transistor is threshold compensated. The threshold compensation signal is greater than the reset signal. A drive transistor supplies a drive current to an organic light-emitting element in a light emission phase to drive the organic light-emitting element to emit light.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: July 13, 2021
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Maoqing Zhou, Fei Chen, Dongxu Xiang
  • Patent number: 11056045
    Abstract: An arrangement for operating radiation emitting devices includes a plurality of radiation emitting devices each having a first capacitance, a driver circuit that supplies the devices with electrical energy, and a compensation structure having a variable second capacitance corresponding to each device and means for adjusting the respective second capacitance, the compensation structure being connected to the device such that a total capacitance assigned to a device and dependent on the first capacitance can be adjusted by the second capacitance.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: July 6, 2021
    Assignee: OSRAM OLED GmbH
    Inventor: Thorsten Frank Baumheinrich
  • Patent number: 11043168
    Abstract: A shift register and a method for driving the same, a gate driving circuit and a display apparatus are disclosed. The shift register includes: an input circuit configured to transmit an input signal from an input terminal to a first node; a first node control circuit configured to transmit a first voltage signal from a first voltage signal terminal to the first node; a second node control circuit configured to transmit a first clock signal from a first clock signal terminal to a second node; a third node control circuit configured to transmit a second voltage signal from a second voltage signal terminal to a third node; and an output circuit configured to transmit one of the first voltage signal from the first voltage signal terminal or the second voltage signal from the second voltage signal terminal to an output terminal.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: June 22, 2021
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yi Zhang, Kai Zhang, Ming Hu
  • Patent number: 11037498
    Abstract: A display apparatus includes a display panel, a power voltage generator, a gate driver and a data driver. The display panel includes first and second display areas, a first back gate signal applying line connected to at least one back gate electrode of at least one of a plurality of pixels in the first display area and a second back gate signal applying line connected to at least one back gate electrode of at least one of a plurality of pixels in the second display area. The power voltage generator is configured to output a first back gate signal to the first back gate signal applying line and a second back gate signal to the second back gate signal applying line. The gate driver is configured to output a gate signal to the display panel. The data driver is configured to output a data voltage to the display panel.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: June 15, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae-Kwan Seo, Wontae Kim, Sunghoon Bang, Taehoon Kim
  • Patent number: 11030943
    Abstract: A scan driver includes: a first transistor having a first electrode coupled to an output scan line, a second electrode coupled to a first power line, and a gate electrode coupled to a first node; a second transistor having a first electrode coupled to a first clock line, a second electrode coupled to the output scan line, and a gate electrode coupled to a second node; a third transistor having a first electrode coupled to the first node, a second electrode coupled to a first input scan line, and a gate electrode coupled to a second clock line; and a fourth transistor having a first electrode coupled to the second node and a second electrode and a gate electrode, which are coupled to a second input scan line, wherein the first input scan line and the second input scan line are different from each other.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: June 8, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chul Kyu Kang, Sung Hwan Kim, Soo Hee Oh, Dong Sun Lee, Sang Moo Choi
  • Patent number: 11024249
    Abstract: A source driver includes an equalizer which outputs compensated image data by adjusting a frequency gain of image data, based on a selected option value among a plurality of option values. A recovery recovers a clock signal corresponding to the compensated image data. A calibrator sequentially provides the plurality of option values to the equalizer, and selects the selected option value among the plurality of option values, based on recovery rates of the clock signal, which respectively correspond to the plurality of option values.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: June 1, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hoe Mi Kim, Ki Hyun Pyun
  • Patent number: 11024233
    Abstract: A display device can include a display panel including a plurality of data lines, a plurality of scan lines, a plurality of light emission control lines, and a plurality of sub-pixels; a first driving circuit configured to drive the plurality of data lines; a second driving circuit configured to drive the plurality of scan lines; and a third driving circuit configured to drive the plurality of light emission control lines, in which the display panel includes an active area in which an image is displayed and a non-active area which is an edge area of the active area.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: June 1, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: JaeHoon Park, SeonYeong Kim
  • Patent number: 11017740
    Abstract: A timing controller and an anti-interference method thereof are provided. The timing controller includes a timing control circuit. The timing control circuit provides an input signal for controlling a source driver. When at least one of the timing control circuit and the source driver detects that an interference event occurs to the input signal, the timing control circuit is configured to adjust a frequency of a data signal or a clock signal from a normal operation frequency to at least one anti-interference frequency. The timing control signal is further configured to provide at least one of the data signal and the clock signal to the source driver.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: May 25, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jen-Chieh Hu, Chin-Hung Hsu
  • Patent number: 11011246
    Abstract: A shift register, a gate driving circuit, a display device, and a driving method of a node sustaining circuit are disclosed. The shift register includes an input sub-circuit, a reset sub-circuit, an output sub-circuit, a pull-down sub-circuit, a first control sub-circuit, a second control sub-circuit, a first storage sub-circuit, and a node sustaining circuit. The node sustaining circuit is configured to sustain the potential of a node, which is one of a pull-up node or a pull-down node in the shift register.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: May 18, 2021
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Honggang Gu, Junsheng Chen, Kui Gong
  • Patent number: 10997890
    Abstract: Disclosed herein is a shift register, a grid driver circuit and a display device. The shift register may comprise a first pull-down point control circuit having a control end coupled to a pull-up point and two ends coupled to a pull-down point and a first voltage input respectively, a second pull-down point control circuit having two control ends coupled to an input signal and a control input respectively and two ends coupled to the pull-down point and the first voltage input respectively, a first pull-up point control circuit having a control end coupled to the pull-down point and two ends coupled to the pull-up point and the first voltage input respectively, and a second pull-up point control circuit having a control end coupled to a first clock signal and two ends coupled to the pull-up point and the first voltage input respectively.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: May 4, 2021
    Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xueguang Hao, Yongda Ma, Yong Qiao, Xinyin Wu
  • Patent number: 10997936
    Abstract: A shift register unit, a gate drive circuit and a display device are disclosed. The shift register unit includes an input circuit, an output circuit, a reset circuit, a control circuit and a reset stabilizing circuit. The input circuit is configured to write an input signal into a first node in response to an input start signal. The output circuit is configured to output a preparatory output signal to an output terminal under control of an electric level of the first node. The reset circuit is configured to reset the output terminal under control of an electric level of a second node. The control circuit is configured to apply a first voltage signal to the second node in response to a control signal. The reset stabilizing circuit is configured to apply a second voltage signal to the first node in response to a reset stabilizing signal.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: May 4, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chen Xu, Xueguang Hao, Yong Qiao, Xinyin Wu
  • Patent number: 10991332
    Abstract: The present application discloses a shift-register circuit including a shift-register unit and a shutdown-discharge sub-circuit. The shift-register unit is coupled to a clock port, a first reference voltage port, a second reference voltage port, and an output port and configured to set a voltage level at a pull-up node to control a clock signal from the clock port being outputted to the output port to drive a display panel during a display period. The shutdown discharge sub-circuit is configured to at least simultaneously receive a shutdown signal at a first voltage level from a shutdown-discharge control port and a second signal at the first voltage level from the second reference voltage port to start a shutdown period to discharge at least one of the pull-up node and the output port. The shutdown signal has a signal length longer than a signal length of the second signal.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 27, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xibin Shao, Zhangtao Wang, Rui Ma, Tong Yang
  • Patent number: 10991306
    Abstract: A circuit of driving pixel includes a driving transistor, having a first end connected to a first node, a control end connected to a second node, and a second connected to the third node end; a writing circuit, connected a data signal end, a first scanning end and the first node; a first control circuit, connected to a first power end, a light emitting control end and the first node; a reset circuit, connected to a reference signal end, a second scanning end and the second node; a compensation circuit, connected between the second node and the third node; a second control circuit, connected to the third node, a light emitting element and the light emitting control end; and an energy storage circuit, connected between the first power end and the second node. The second end of the light emitting element receives a second voltage signal.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: April 27, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tieshi Wang, Xueling Gao, Zhiqiang Xu, Chengchung Yang, Haoran Liu
  • Patent number: 10991316
    Abstract: A display device includes: a display panel to display an image; a signal controller to determine whether an input image signal is a still image signal, and if the input image signal is a still image signal, further determine whether image switching occurs, and if image switching occurs, to compensate image data according to frame data after the image is switched by using data values of two pieces of frame data between which the image switching occurs; and a data driver to generate a data signal based on the image data and to output the data signal to the display panel.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: April 27, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Won Kim, Nam-Hee Goo, Byung-Su Oh, A Ra Jo