Patents Examined by Sepehr Azari
  • Patent number: 11842690
    Abstract: Provided is a scan driver of a display device, and the scan driver includes a driving circuit and a masking circuit. The driving circuit includes a control circuit, a first output circuit, and a second output circuit. The control circuit outputs a first control signal and a second control signal. The first output circuit is connected to a first output terminal which outputs a first scan signal and a first voltage terminal and operates in response to a first control signal. The second output circuit is connected to a first output terminal and a second voltage terminal and operates in response to a second control signal. The masking circuit outputs a second scan signal to a second output terminal in response to the first control signal and the second control signal and is connected to an input terminal to which a masking signal is supplied.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: December 12, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taehoon Kim, Sangan Kwon, Soon-Dong Kim, Hui Nam, Bonghyun You, Changnoh Yoon, Jaekeun Lim
  • Patent number: 11837172
    Abstract: A gate driving circuit and a display device are provided. The gate driving circuit includes electrically connected multi-stage driving units. The driving unit of each stage includes an input module, an output module electrically connected with the input module, a pull-down module electrically connected with the output module, and a pull-down control module electrically connected with the pull-down module. The output module is electrically connected to a stage transmission signal output terminal, and the pull-down module is electrically connected to a first control signal terminal.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: December 5, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chao Tian, Yanqing Guan, Guanghui Liu, Fei Ai
  • Patent number: 11836295
    Abstract: A free space input standard is instantiated on a processor. Free space input is sensed and communicated to the processor. If the free space input satisfies the free space input standard, a touch screen input response is invoked in an operating system. The free space input may be sensed using continuous implicit, discrete implicit, active explicit, or passive explicit approaches. The touch screen input response may be invoked through communicating virtual touch screen input, a virtual input event, or a virtual command to or within the operating system. In this manner free space gestures may control existing touch screen interfaces and devices, without modifying those interfaces and devices directly to accept free space gestures.
    Type: Grant
    Filed: February 14, 2023
    Date of Patent: December 5, 2023
    Assignee: West Texas Technology Partners, LLC
    Inventors: Shashwat Kandadai, Nathan Abercrombie, Yu-Hsiang Chen, Sleiman Itani
  • Patent number: 11830427
    Abstract: Provided are a pixel circuit, a display apparatus and a driving method. In one type of pixel circuit, a first switch transistor is arranged between a gate electrode of a driving transistor and a second electrode of a first reset transistor, such that a leak current of the first reset transistor has a relatively small influence on a gate signal of the driving transistor. In other types of pixel circuit, a second reset transistor for short-circuiting the gate electrode and a first electrode is provided, such that the resetting of an anode of a light-emitting device is only related to a signal of a second reset signal end. Therefore, the voltage difference between two ends of a third reset transistor can be reduced by means of adjusting a signal voltage of a reference voltage signal end.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: November 28, 2023
    Assignees: Ordos Yuansheng Optoelectronics Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Jing Liu, Zihua Li
  • Patent number: 11830400
    Abstract: A circuit structure, a method for driving the same, and a display apparatus are provided. The circuit structure includes shift units and a control circuit. The shift units are cascaded and include first to third shift units. The control circuit includes a first control unit and a second control unit. The first control unit is electrically connected between the first shift unit and the second shift unit, and is configured to control a shift control signal output by the first shift unit to be transmitted to the second shift unit when the first control unit is turned on. The second control unit is electrically connected between the second shift unit and the third shift unit, and is configured to control a shift control signal output by the second shift unit to be transmitted to the third shift unit when the second control unit is turned on.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: November 28, 2023
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventor: Feng Lu
  • Patent number: 11823613
    Abstract: A display device comprises: a display module including a display panel; a control board for controlling the display module; and a power board for outputting direct current voltage to the display module. The power board changes the pulse frequency of a control signal so as to output direct current voltage adjusted according to changes in the load of the display panel.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 21, 2023
    Assignee: LG ELECTRONICS INC.
    Inventors: Dohoon Kim, Jinhaeng Jang, Seunghun Jang
  • Patent number: 11817035
    Abstract: A charging time modulating method is disclosed. After obtaining relational data between a charging rate and a charging time of pixel units on each pixel area, an average charging time corresponding to a preset charging rate is calculated based on each relational data. Then, an initial charging time of the pixel units on each of the pixel areas is obtained, and the initial charging time of the pixel units on each of the pixel areas is adjusted according to the average charging time, so that the initial charging time of the pixel units on each of the pixel areas is equal to the average charging time.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: November 14, 2023
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Jun Zhao, Xiang Gao
  • Patent number: 11810518
    Abstract: A gate driving circuit according to an embodiment and a display panel including the same are disclosed. The gate driving circuit according to the embodiment includes: a controller configured to charge and discharge a first control node that pulls up an output voltage and a second control node that pulls down the output voltage; an output unit including a pull-up transistor configured to apply a gate high voltage to an output node in response to a charging voltage of the first control node, and a pull-down transistor configured to apply a gate low voltage to the output node in response to a charging voltage of the second control node; a sensing unit configured to sense a threshold voltage of the pull-down transistor; and a compensation unit configured to change the charging voltage of the second control node in response to an output of the sensing unit.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: November 7, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Seung Ho Heo, Dong Hyun Lee
  • Patent number: 11804176
    Abstract: A display substrate and a display device, the display substrate includes a first side for displaying and a second side, and includes: a base substrate; a display region including first and second display regions, the first display region including multiple pixel unit groups, each pixel unit group including multiple first pixel units, and each first pixel unit including a pixel region and an opening region; multiple first power lines located in the pixel region; a shielding layer including a hollow region and a shielding region; for one pixel unit group, the opening region of each first pixel unit at least partially overlaps with the shielding region, the opening region of at least one first pixel unit includes a first shielding connecting portion at least partially overlapping with the shielding region, the shielding layer is connected with at least one first power line through the first shielding connecting portion.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: October 31, 2023
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Cong Liu, Yao Huang, Jiachang Cai, Yudiao Cheng, Chao Wu
  • Patent number: 11798484
    Abstract: A display panel is provided in embodiments of the disclosure. The display panel includes multiple pixel units arranged in an array. During continuous display of two frames of images, each of the multiple pixel units is configured to receive a data signal of a first polarity to perform image display when a first frame of image in the two frames of images is displayed, and to receive a data signal of a second polarity to perform image display when a second frame of image in the two frames of images is displayed. Each of the multiple pixel units includes a first drive module, a second drive module, and a light-emitting module. The first drive module is configured to receive the data signal of the first polarity and to control the light-emitting module to emit light according to the data signal of the first polarity.
    Type: Grant
    Filed: June 7, 2023
    Date of Patent: October 24, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Renjie Zhou, Rongrong Li
  • Patent number: 11798470
    Abstract: A pixel driving circuit, a driving method thereof, and a display panel are provided. The pixel driving circuit includes a light-emitting element, a power line connected to the light-emitting element, a pulse amplitude modulation unit including a first driving transistor connected to the light-emitting element and the power line and configured to provide driving current with different amplitude to the light-emitting element according to voltage applied to a gate of the first driving transistor; and a pulse width modulation unit including a second driving transistor connected to the light-emitting element and the pulse amplitude modulation unit, a first transistor and a second transistor connected to a gate of the second driving transistor, and a pulse width generation circuit connected to the gate of the first transistor. Duration of driving current in the light-emitting element is controlled according to voltage applied to the gate of the second driving transistor.
    Type: Grant
    Filed: June 10, 2023
    Date of Patent: October 24, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventors: Zeyao Li, Haijiang Yuan
  • Patent number: 11798458
    Abstract: A gate driving unit includes a first input node control circuit and a charge pump circuit; the first input node control circuit is configured to connect or disconnect the between an input terminal and the first input node under control of a clock signal provided by the clock signal terminal; the charge pump circuit is configured to control to convert a voltage signal of the first input node into a voltage signal of the first node under the control of an input clock signal provided by the input clock signal terminal when the voltage signal of the first input node is a first voltage signal, so that a polarity of the voltage signal of the first input is the same as a polarity of the voltage signal of the first input node, and an absolute value of the voltage value of the voltage signal of the first node is greater than an absolute value of a voltage value of the voltage signal of the first input node.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: October 24, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Jie Zhang, Jiangnan Lu, Mei Li, Libin Liu
  • Patent number: 11763742
    Abstract: A method of determining a model for pixel power consumption for each pixel in a display of a device displaying each color in a color space is disclosed which includes establishing a color space for the display, decomposing the color space into a plurality of subgrids, measuring the pixel power associated with a selected set of colors in each subgrid of the plurality of subgrids, establishing a pixel power model for each subgrid of the plurality of subgrids by applying a function to the power values at the selected set of colors in that subgrid, and deriving a piecewise pixel power model for the entire color space which includes pixel power models for the plurality of subgrids.
    Type: Grant
    Filed: December 12, 2022
    Date of Patent: September 19, 2023
    Assignee: Purdue Research Foundation
    Inventors: Yu Charlie Hu, Pranab Dash
  • Patent number: 11749212
    Abstract: Disclosed is a display device including: a timing controller outputting image data and a data driving control signal based on an image signal and a control signal inputted from the outside; a data driver outputting a data voltage corresponding to the image data based on the data driving control signal; and a display panel displaying an image corresponding to the data voltage, and the data driver includes: a buffer array where buffer groups, each of which is composed of one or more adjacent output buffers, are disposed; a bias current controller applying a bias current to the buffer groups; and an output circuit sequentially applying the data voltage outputted from the buffer groups to data lines in response to a source output enable signal and driving method for the same.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: September 5, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Daehwan Kim, Jeongho Kang
  • Patent number: 11740708
    Abstract: An input device may include a housing, a scroll wheel having an arresting surface, and a lever pivotable about a pivot axis between first and second lever arms of the lever for moving a first free end portion of the first lever arm to engage or disengage the arresting surface. The input device may further include a motion converter in engagement with a second free end portion of a second lever arm. The motion converter configured to convert a rotational movement of a rotary member of the motion converter into an output motion to move the second free end portion of the second lever arm so as to pivot the lever about the pivot axis for engaging or disengaging the first free end portion of the first lever arm and the arresting surface of the scroll wheel.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: August 29, 2023
    Assignee: Razer (Asia-Pacific) Pte. Ltd.
    Inventor: Farrukh Raza Rizvi
  • Patent number: 11735120
    Abstract: Provided is a scanning-line driving circuit configured with a plurality of unit circuits cascaded in stages and integrally formed with a display panel. The unit circuit includes a first transistor, a resistor, a second transistor, and an output transistor. The first transistor has a first conductive electrode supplied with a first-level voltage and a second conductive electrode connected to a first node. The resistor is connected to the first node at a first terminal. The second transistor has a first conductive electrode supplied with a second-level voltage and a second conductive electrode connected to a second terminal of the resistor. The output transistor has a control electrode connected to the first node and a first conductive electrode connected to an output terminal. The resistor is formed in a semiconductor layer. The unit circuit further includes an upper electrode formed above the resistor.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: August 22, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Mitani, Makoto Yokoyama, Naoki Ueda
  • Patent number: 11727851
    Abstract: A gate driver includes active stages that output gate signals to a display part and pre-stages connected to the active stages to output carry signals to the active stages. The pre-stages include a first pre-stage and a second pre-stage. The second pre-stage includes a Q node compensator that receives a clock signal from the first pre-stage and compensates for a voltage of a Q node based on the clock signal of the first pre-stage. The Q node compensator includes a feedback transistor that diode-connects a feedback input terminal, which receives the clock signal of the first pre-stage, to a feedback node of the second pre-stage. The feedback transistor includes a first electrode, a second electrode, and a third electrode, where the first electrode is connected to the feedback input terminal, the second electrode is connected to the first electrode, and the third electrode is connected to the feedback node.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: August 15, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Junghwan Hwang, Doo-young Lee
  • Patent number: 11727868
    Abstract: Disclosed are a pixel circuit, a driving method of the pixel circuit and a display device, the pixel circuit including a reset unit, a voltage writing unit and a light-emitting control unit, the reset unit is connected to a reset control signal terminal, and resets the pixel circuit under the control of the reset control signal; the voltage writing unit stores a data signal and a threshold voltage of a driving transistor under the control of the scan control signal; the light-emitting control unit is connected to a light-emitting control signal terminal and includes the driving transistor, and use the data signal and the threshold voltage to generate a current under control of the light-emitting control signal; the light-emitting control unit includes a first type transistor, the reset unit and the voltage writing unit include a second type transistor different from the first type transistor.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: August 15, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Can Zheng
  • Patent number: 11727886
    Abstract: A display panel, a drive method, and a display apparatus are provided in the present disclosure. The display region of the display panel includes a plurality of scan line units; and each scan line unit includes two scan lines which extend along the first direction and are arranged along a second direction. The method includes, for displaying M frames of pictures, receiving a scan drive signal sequentially by a plurality of scan lines arranged along the second direction; and for displaying N frames of pictures adjacent to the M frames of pictures, receiving the scan drive signal sequentially by the plurality of scan line units arranged along the second direction; and along the second direction, for each same scan line unit, receiving the scan drive signal by an ith scan line after an (i+1)th scan line receives the scan drive signal.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: August 15, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yue Li, Peng Zhang, Mengmeng Zhang
  • Patent number: 11721290
    Abstract: A gate driving circuit and a display device including the same are disclosed. The gate driving circuit includes signal transmitters receiving a start pulse, a shift clock, a charge/discharge clock, a back-bias clock, a high-potential driving voltage, and a low-potential reference voltage, and connected in a cascade structure. An Nth (N is a positive integer) signal transmitter of the signal transmitters includes a first control node; a second control node; a first controller controlling charging and discharging of the first control node by using at least one transistor to which the back-bias clock is inputted; a second controller controlling charging and discharging of the second control node; a first output buffer outputting a carry pulse in response to voltages of the first and second control nodes; and a second output buffer outputting a gate pulse.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: August 8, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Sung Yu, Jae Hoon Park