Patents by Inventor MINGFU HAN

MINGFU HAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11402714
    Abstract: The present application discloses a pixel array substrate. The pixel array substrate includes a plurality of pixels arranged in an array having multiple data-input terminals. N columns of subpixels per each column of pixels are associated with N sets of M numbers of data lines. N is an integer equal to and greater than 1 and M is an even number equal to or greater than 2. The pixel array substrate also includes N sets of M numbers of switches coupled respectively to the N sets of M numbers of data lines. Control terminals of each set of M numbers of switches are respectively coupled to M numbers of clock-signal terminals to receive respective clock control signals to control M groups of subpixels in each corresponding one column of subpixels for connecting with one of the multiple data-input terminals respectively via each corresponding set of M numbers of data lines.
    Type: Grant
    Filed: September 30, 2018
    Date of Patent: August 2, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Lijun Yuan, Mingfu Han, Haoliang Zheng, Guangliang Shang, Xing Yao, Shunhang Zhang
  • Patent number: 11263951
    Abstract: Disclosed is a shift register unit, including a first input circuit, an input control circuit, a pull-down control circuit, a pull-down circuit, an output circuit and a second input circuit. The first input circuit includes a first input sub-circuit, and is configured to, under control of the first signal input terminal, cause a voltage of the first voltage terminal to be output to a second terminal of the first input sub-circuit and output to the pull-up node via a first terminal thereof. The input control circuit is configured to pull down a potential of the second terminal to the potential of a first power supply voltage terminal under control of an enable signal terminal.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: March 1, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhichong Wang, Haoliang Zheng, Seungwoo Han, Guangliang Shang, Lijun Yuan, Xing Yao, Mingfu Han
  • Patent number: 11250750
    Abstract: A shift register circuit, a driving method thereof, a gate drive circuit and a display device are provided. The shift register circuit includes an input sub-circuit, an output sub-circuit, a discharge sub-circuit and a noise reduction sub-circuit. The input sub-circuit is connected to an input signal terminal, a first power source terminal and a pull-down node, and configured to, under the control of an input signal, output a first power source terminal signal to the pull-down node. In the shift register circuit, the discharge sub-circuit may control the potential of the pull-down node to be an ineffective potential at the input stage, thereby preventing the noise reduction sub-circuit from affecting the potentials of the pull-up node and the output terminal under the control of the pull-down node, and ensuring normal output of the shift register circuit.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 15, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhichong Wang, Haoliang Zheng, Seungwoo Han, Guangliang Shang, Mingfu Han, Lijun Yuan, Xing Yao
  • 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: 11211027
    Abstract: The present disclosure is related to a driving circuit of a display panel. The driving circuit may include a turn-on voltage adjusting circuit. The turn-on voltage adjusting circuit may include a control subcircuit and a switching and voltage division subcircuit. The switching and voltage division subcircuit may include a switching subcircuit and a basic voltage division subcircuit. The switching subcircuit may be configured to perform voltage division of a signal outputted by the output terminal of the control subcircuit to form a voltage division feedback signal of the corresponding resolution under control of the control signal and output the voltage division feedback signal to the voltage division feedback node.
    Type: Grant
    Filed: April 8, 2018
    Date of Patent: December 28, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Liugang Zhou, Haoliang Zheng, Yaoqiu Jing, Mingfu Han, Seungwoo Han
  • Publication number: 20210358381
    Abstract: Disclosed is a shift register unit, including a first input circuit, an input control circuit, a pull-down control circuit, a pull-down circuit, an output circuit and a second input circuit. The first input circuit includes a first input sub-circuit, and is configured to, under control of the first signal input terminal, cause a voltage of the first voltage terminal to be output to a second terminal of the first input sub-circuit and output to the pull-up node via a first terminal thereof. The input control circuit is configured to pull down a potential of the second terminal to the potential of a first power supply voltage terminal under control of an enable signal terminal.
    Type: Application
    Filed: August 14, 2018
    Publication date: November 18, 2021
    Inventors: Zhichong WANG, Haoliang ZHENG, Seungwoo HAN, Guangliang SHANG, Lijun YUAN, Xing YAO, Mingfu HAN
  • Publication number: 20210356785
    Abstract: The present application discloses a pixel array substrate. The pixel array substrate includes a plurality of pixels arranged in an array having multiple data-input terminals. N columns of subpixels per each column of pixels are associated with N sets of M numbers of data lines. N is an integer equal to and greater than 1 and M is an even number equal to or greater than 2. The pixel array substrate also includes N sets of M numbers of switches coupled respectively to the N sets of M numbers of data lines. Control terminals of each set of M numbers of switches are respectively coupled to M numbers of clock-signal terminals to receive respective clock control signals to control M groups of subpixels in each corresponding one column of subpixels for connecting with one of the multiple data-input terminals respectively via each corresponding set of M numbers of data lines.
    Type: Application
    Filed: September 30, 2018
    Publication date: November 18, 2021
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Lijun Yuan, Mingfu Han, Haoliang Zheng, Guangliang Shang, Xing Yao, Shunhang Zhang
  • Patent number: 11176886
    Abstract: The present disclosure discloses a circuit, a driving method thereof, a display panel and a display device. The circuit may include: a signal control module, a compensation control module, an initialization module, a data writing module, a driving control module, and a light emitting device. With the signal control module which is cooperated with other modules, the threshold voltage compensation time of the driving transistor can be increased, and the threshold voltage compensation can be ensured, thereby improving the image display quality.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: November 16, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Lijun Yuan, Mingfu Han, Zhichong Wang, Haoliang Zheng, Seungwoo Han, Guangliang Shang
  • Patent number: 11176909
    Abstract: The present disclosure provides a compensation method, compensation device, and a display device. The compensation method includes: adjusting charging time for multiple areas of the display screen so that the charging time for each area is positively related to a distance from the area to a data voltage input terminal; comparing a first grayscale value before compensation of a sub-pixel in an i-th row and j-th column with a second grayscale value input to a sub-pixel in an (i?1)-th row and j-th column; searching a corresponding grayscale compensation parameter from a grayscale compensation parameter table according to the first grayscale value and the second grayscale value; compensating the first grayscale value by the grayscale compensation parameter to obtain a third grayscale value; and inputting the third grayscale value to the sub-pixel in the i-th row and j-th column for display.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: November 16, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Xing Yao, Mingfu Han, Guangliang Shang, Hao Zhu, Yifang Chu, Yunsik Im
  • Publication number: 20210335210
    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: Application
    Filed: September 6, 2018
    Publication date: October 28, 2021
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Mingfu Han, Guangliang Shang, Xing Yao, Haoliang Zheng
  • Patent number: 11094277
    Abstract: A shift register, a gate drive circuit, a display apparatus and a driving method of the shift register are provided. The shift register includes an input subcircuit, a first and a second output subcircuits, a trigger signal input terminal, a first and a second signal output terminals, a first and a second clock terminals and a pull-up node, a control terminal and an output terminal of the input subcircuit are electrically coupled to the trigger signal input terminal and the pull-up node, respectively, for providing a valid signal received by the control terminal of the input subcircuit to the pull-up node. The shift register is provided with the first and second output subcircuits which share the same input subcircuit, greatly reducing the number of devices and thus greatly simplifying the structure of the cascaded shift registers and reducing the area of the whole display apparatus.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: August 17, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haoliang Zheng, Seungwoo Han, Guangliang Shang, Xing Yao, Lijun Yuan, Zhichong Wang, Mingfu Han, Yinglong Huang
  • Publication number: 20210225312
    Abstract: A shift register unit and a drive method thereof, a gate driving circuit and a display device are provided. The shift register unit includes an input circuit, a pull-up node reset circuit, an output circuit and a coupling circuit. The input circuit is configured to charge a pull-up node in response to an input signal; the pull-up node reset circuit is configured to reset the pull-up node in response to a reset signal; the output circuit is configured to output a first clock signal to a first output terminal under control of a level of the pull-up node; and the coupling circuit is configured to control, by coupling, a potential of the pull-up node in response to a second clock signal.
    Type: Application
    Filed: June 7, 2018
    Publication date: July 22, 2021
    Inventors: Mingfu HAN, Guangliang SHANG, Seung Woo HAN, Xing YAO, Haoliang ZHENG, Lijun YUAN, Zhichong WANG
  • Patent number: 11069274
    Abstract: The embodiments of the present application provide a shift register unit and a method for driving the same, a gate driving circuit, and a display apparatus. Here, the shift register unit includes a first controlling sub-circuit, a first voltage dividing sub-circuit, a charging and discharging sub-circuit, and an outputting sub-circuit. Here, an output signal of the outputting sub-circuit is controlled by the charging and discharging sub-circuit. A first input signal and a second input signal input at a first input signal terminal Forward and a second input signal terminal Backward electrically coupled to the charging and discharging sub-circuit are pulse signals.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: July 20, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhichong Wang, Seungwoo Han, Guangliang Shang, Haoliang Zheng, Lijun Yuan, Xing Yao, Mingfu Han
  • Publication number: 20210201840
    Abstract: The present disclosure is related to a driving circuit of a display panel. The driving circuit may include a turn-on voltage adjusting circuit. The turn-on voltage adjusting circuit may include a control subcircuit and a switching and voltage division subcircuit. The switching and voltage division subcircuit may include a switching subcircuit and a basic voltage division subcircuit. The switching subcircuit may be configured to perform voltage division of a signal outputted by the output terminal of the control subcircuit to form a voltage division feedback signal of the corresponding resolution under control of the control signal and output the voltage division feedback signal to the voltage division feedback node.
    Type: Application
    Filed: April 8, 2018
    Publication date: July 1, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Liugang Zhou, Haoliang Zheng, Yaoqiu Jing, Mingfu Han, Seungwoo Han
  • Patent number: 11012274
    Abstract: A demultiplexer includes a voltage boost circuit and at least one data selection output circuit. The voltage boost circuit is coupled to N second-stage selection signal input terminals and N first-stage selection signal input terminals, N is greater than or equal to 2, and N is a positive integer. Each data selection output circuit is coupled to a data input terminal, N data output terminals and the N first-stage selection signal input terminals.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: May 18, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lijun Yuan, Haoliang Zheng, Guangliang Shang, Xing Yao, Mingfu Han
  • Patent number: 10991289
    Abstract: The present disclosure is related to a memory-in-pixel circuit. The memory-in-pixel circuit comprises a switch sub-circuit, and a data input sub-circuit. The data input sub-circuit comprises a first floating gate transistor and a second floating gate transistor. The data input sub-circuit is configured to transmit a data signal from one of a plurality of data lines to a pixel electrode under control of the switch sub-circuit.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: April 27, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Chengyou Han, Mingfu Han, Lijun Yuan, Xing Yao, Haoliang Zheng
  • Patent number: 10943552
    Abstract: A shift register unit cascaded in a gate drive circuit, wherein the shift register unit comprises: a control circuit configured to output a control signal, at least two buffer circuits coupled to the control circuit, each of the at least two buffer circuits configured to output scan signal to a gate line. As such, the scan signals output from the at least two buffer circuits would be synchronized so that the gate lines respectively coupled to the two buffer circuits can be scanned simultaneously.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: March 9, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiha Kim, Seungwoo Han, Guangliang Shang, Haoliang Zheng, Xing Yao, Zhichong Wang, Mingfu Han, Lijun Yuan, Yunsik Im, Jing Lv, Xue Dong
  • Patent number: 10902810
    Abstract: The present disclosure relates to an array substrate gate driving unit and an apparatus thereof, a driving method and a display apparatus. The array substrate gate driving unit includes: an input circuit, connected with an input signal terminal and a pull-up node PU; a pull-down circuit, connected with a first voltage signal terminal and the pull-up node PU; a pull-down control circuit, connected with the pull-down circuit via a pull-down node PD; an output circuit, connected with a clock signal terminal CLK, a second voltage signal terminal and a control circuit; a reset circuit, connected with a reset signal terminal Reset, the first voltage signal terminal and the pull-up node PU; and the control circuit, connected with the pull-up node PU and the output circuit.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: January 26, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Mingfu Han, Guangliang Shang, Xing Yao, Seung Woo Han, Jiha Kim, Haoliang Zheng, Lijun Yuan, Zhichong Wang
  • Patent number: 10902931
    Abstract: The present disclosure provides a shift register unit and a method for driving the same, a gate driving circuit, and a display apparatus. The shift register unit includes: a first input sub-circuit configured to transmit a signal at a first signal input terminal to a pull-up node under control of the first signal input terminal; a second input sub-circuit configured to transmit the signal at the first signal input terminal to the pull-up node under control of a second signal input terminal; a first output sub-circuit configured to transmit a signal at a first clock signal terminal to a first signal output terminal under control of the pull-up node; and a second output sub-circuit configured to transmit a signal at a second clock signal terminal to a second signal output terminal under control of the pull-up node.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: January 26, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Mingfu Han
  • Patent number: 10872572
    Abstract: The embodiments of the present disclosure provide a gate driving circuit and a method for controlling the same, and a display apparatus.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: December 22, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Seungwoo Han, Lijun Yuan, Mingfu Han, Haoliang Zheng, Xing Yao, Zhenyu Zhang