Patents by Inventor Ruifang DU

Ruifang DU 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: 11081042
    Abstract: A gate driving unit includes a shift register including a forward input sub-circuit and a backward input sub-circuit, and a forward-backward scanning controller. The forward-backward scanning controller transmits a first clock signal provided by the first clock signal terminal to the forward input sub-circuit and the backward input sub-circuit for forward scanning, and transmits a second clock signal provided by the second clock signal terminal to the forward input sub-circuit and the backward input sub-circuit for backward scanning. The forward input sub-circuit transmits a signal provided by the forward-backward scanning controller to the pull-up node under control of an enabling signal provided by the forward scanning input terminal, and the backward input sub-circuit transmits the signal provided by the forward-backward scanning controller to the pull-up node under control of an enabling signal provided by the backward scanning input terminal.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: August 3, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaofang Gu, Xiaoye Ma, Ruifang Du, Donghui Zhang, Guodong Liu
  • Publication number: 20210201749
    Abstract: The present disclosure relates to a display substrate, a method for driving the same, and a display panel. The display substrate includes a base substrate as well as gate lines, data lines and a gate driver on the base substrate, the gate line being connected to the gate driver, and electrostatic rings and control components corresponding to at least one gate line are further disposed on the base substrate, each of the gate lines being connected to the electrostatic ring by a corresponding control component. The electrostatic ring is configured to load a control voltage to turn on the corresponding control component after the display panel is turned off, and the corresponding control component is configured to be turned on to change a voltage on the gate line into a turn-on voltage after the display panel is turned off.
    Type: Application
    Filed: November 29, 2017
    Publication date: July 1, 2021
    Inventors: Ruifang Du, Xibin Shao, Rui Ma, Xiaoye Ma
  • Publication number: 20210173246
    Abstract: A liquid crystal display device and a drive method thereof are disclosed. The liquid crystal display device includes a display panel and a controller. The display panel includes a display region, a plurality of pixels arranged in a matrix are provided in the display region, each of the plurality of pixels includes a red sub-pixel, a blue sub-pixel and a green sub-pixel, and the display region includes a middle portion and a peripheral portion outside the middle portion, and at least one first pixel is provided in the peripheral portion, the controller is configured to relatively increase a luminous intensity of a blue sub-pixel in the first pixel.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 10, 2021
    Applicants: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Ruifang Du, Zijun Cao, Yuanyuan Liu, Xiaoye Ma, Rui Ma
  • Publication number: 20210151471
    Abstract: A display substrate includes an active area; and a gate-driver-on-array (GOA) circuit area, wherein the active area includes a display pixel area and a dummy pixel area located in the periphery of the display pixel area, and wherein the GOA circuit area includes at least one dummy GOA circuit having an output terminal connected to a pixel electrode of at least one dummy pixel.
    Type: Application
    Filed: March 26, 2020
    Publication date: May 20, 2021
    Inventors: Ruifang DU, Xiaofang GU, Xiaoye MA, Donghui ZHANG, Yuxiang ZHANG
  • Patent number: 10984879
    Abstract: A shift register unit and a method for driving the same, a gate driving circuit, and a display apparatus are disclosed. The shift register unit includes: an input circuit configured to transmit an input signal to a pull-up node; an output circuit configured to transmit a clock signal to an output signal terminal under control of a voltage at the pull-up node; a first reset circuit configured to reset the pull-up node to a first level under control of a first reset signal; a first pull-down control circuit configured to control levels at the pull-up node and the output signal terminal under control of a first control signal; and a first voltage control circuit electrically connected to a second control signal terminal, and configured to control a voltage signal waveform at the first pull-down node under control of a second control signal.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: April 20, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaofang Gu, Xiaoye Ma, Ruifang Du, Donghui Zhang, Guodong Liu
  • Patent number: 10978017
    Abstract: There is provided in the present disclosure a shift register unit, including: an input sub-circuit, whose first terminal is coupled to an input signal terminal, and second terminal is coupled to a pull-up node; an output sub-circuit, whose first terminal is coupled to the pull-up node, second terminal is coupled to a clock signal terminal, and third terminal is coupled to an output terminal, and configured to output a clock signal of the clock signal terminal to the output terminal under the control of a level signal of the pull-up node; a first electro-static discharge sub-circuit, whose first terminal is coupled to the pull-up node, second terminal is coupled to an electro-static discharge control terminal, and third terminal is coupled to a ground, and configured to discharge static electricity accumulated at the pull-up node under the control of a level signal of the electro-static discharge control terminal.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: April 13, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Ruifang Du, Jiyan Ma, Xiaoye Ma, Rui Ma
  • Patent number: 10950196
    Abstract: A shift register, a method for driving the same, a gate driving circuit, and a display device are described. The shift register includes a pull-up control circuit which outputs the voltage of a signal input terminal, a pull-up circuit which outputs the voltage of a first clock signal input terminal, a pull-down control circuit which outputs the voltage of a second clock signal input terminal, or pulls down the voltage of the pull-down node, a pull-down circuit which pulls down voltages of the pull-up node and the signal output terminal to the first voltage terminal, respectively, a reset circuit which pulls down voltages of the pull-up node and the signal output terminal to the first voltage terminal, respectively, and a noise reduction control circuit which outputs the voltage of a noise reduction control signal terminal to the pull-down node in the blanking time of an image frame.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: March 16, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ruifang Du, Zijun Cao, Xiaoye Ma, Rui Ma
  • Patent number: 10948760
    Abstract: A liquid crystal display panel includes a light adjusting layer. The light adjusting layer is configured to reduce a yellowing degree of a peripheral display area. The light adjusting layer is located in the peripheral display area in a display area of the liquid crystal display panel, and the peripheral display area is located at a periphery of an intermediate display area in the display area.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: March 16, 2021
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zijun Cao, Ruifang Du
  • Publication number: 20210065611
    Abstract: A gate driving unit includes a shift register including a forward input sub-circuit and a backward input sub-circuit, and a forward-backward scanning controller. The forward-backward scanning controller transmits a first clock signal provided by the first clock signal terminal to the forward input sub-circuit and the backward input sub-circuit for forward scanning, and transmits a second clock signal provided by the second clock signal terminal to the forward input sub-circuit and the backward input sub-circuit for backward scanning. The forward input sub-circuit transmits a signal provided by the forward-backward scanning controller to the pull-up node under control of an enabling signal provided by the forward scanning input terminal, and the backward input sub-circuit transmits the signal provided by the forward-backward scanning controller to the pull-up node under control of an enabling signal provided by the backward scanning input terminal.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 4, 2021
    Inventors: Xiaofang GU, Xiaoye MA, Ruifang DU, Donghui ZHANG, Guodong LIU
  • Patent number: 10923060
    Abstract: A shift register unit, a shift register circuit and a display panel is provided. The shift register unit includes: an input circuit configured to transmit a power signal to the pull-up node; an output circuit configured to transmit a clock signal to the signal output terminal; a reset circuit configured to transmit a reference signal to the pull-up node and the signal output terminal; a first pull-down control circuit configured to transmit the reference signal to the pull-down control node and the pull-down node; a second pull-down control circuit configured to transmit the power signal to the pull-down control node and the pull-down node; and a pull-down circuit configured to transmit the reference signal to the pull-up node and the signal output terminal.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: February 16, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ruifang Du, Xiping Wang, Rui Ma, Xiaoye Ma
  • Publication number: 20210018802
    Abstract: A display panel includes a first anti-static wiring and a second anti-static wiring which are disposed at the periphery of a display area. The second anti-static wiring is electrically connected to the first anti-static wiring via a first anti-static unit. The second anti-static wiring is disposed at the periphery of the first anti-static wiring, and the first anti-static wiring and the second anti-static wiring are both electrically connected to a circuit board of the display device.
    Type: Application
    Filed: October 8, 2018
    Publication date: January 21, 2021
    Inventors: Ruifang Du, Zijun Cao, Xiaoye Ma
  • Publication number: 20210011316
    Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a common electrode. The common electrode includes an electrode unit array. The electrode unit array includes a plurality of electrode units. Each of the electrode units corresponds to two adjacent sub-pixels. Each of the electrode units includes a boundary electrode line and an inner region defined by the boundary electrode line. The inner region includes a first region and a second region. The first region includes a plurality of first strip electrode lines having a same longitudinal direction. Two adjacent first strip electrode lines are not connected inside the first region. The second region includes a plurality of second strip electrode lines having a same longitudinal direction. Two adjacent second strip electrode lines are not connected inside the second region.
    Type: Application
    Filed: December 27, 2018
    Publication date: January 14, 2021
    Inventors: Ruifang DU, Fengzhen LYU, Hui LI, Xiaoye MA
  • Publication number: 20210005124
    Abstract: Embodiments of the present disclosure provide a shift register, a gate driving circuit, and a display apparatus. The shift register comprises a power consumption-reducing sub-circuit and an output sub-circuit; wherein: the power consumption-reducing sub-circuit is connected to a clock signal terminal, a control terminal, and the output sub-circuit, the power consumption-reducing sub-circuit is used to output a signal of the clock signal terminal to the output sub-circuit under the control of the control terminal; the output sub-circuit is connected to the clock signal terminal through the power consumption-reducing sub-circuit and is also connected to an output terminal and a pull-up node, the output sub-circuit is used to output an output signal of the power consumption-reducing sub-circuit to the output terminal under the control of the pull-up node.
    Type: Application
    Filed: May 10, 2019
    Publication date: January 7, 2021
    Inventors: Ruifang DU, Ruiying YANG, Lingjuan LIU, Xiaoye MA
  • Patent number: 10878737
    Abstract: Embodiments of the present disclosure provide a shift register, a gate driving circuit, a display panel and a display apparatus. The shift register comprises an inputting sub-circuit, an outputting sub-circuit, a resetting sub-circuit, and a first discharging controlling sub-circuit. The first discharging controlling sub-circuit is coupled to a first controlling signal inputting terminal, a second controlling signal inputting terminal and a signal outputting terminal, and configured to provide a second controlling signal from the second controlling signal inputting terminal to the signal outputting terminal under a control of a first controlling signal from the first controlling signal inputting terminal. The signal outputting terminal is set to a high level by inputting the first controlling signal and the second controlling signal to the shift register.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 29, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ruifang Du, Haifeng Liu, Xiaoye Ma
  • Publication number: 20200357352
    Abstract: A shift register, a method for driving the same, a gate driving circuit, and a display device are described. The shift register includes a pull-up control circuit which outputs the voltage of a signal input terminal, a pull-up circuit which outputs the voltage of a first clock signal input terminal, a pull-down control circuit which outputs the voltage of a second clock signal input terminal, or pulls down the voltage of the pull-down node, a pull-down circuit which pulls down voltages of the pull-up node and the signal output terminal to the first voltage terminal, respectively, a reset circuit which pulls down voltages of the pull-up node and the signal output terminal to the first voltage terminal, respectively, and a noise reduction control circuit which outputs the voltage of a noise reduction control signal terminal to the pull-down node in the blanking time of an image frame.
    Type: Application
    Filed: February 12, 2018
    Publication date: November 12, 2020
    Inventors: Ruifang DU, Zijun CAO, Xiaoye MA, Rui MA
  • Publication number: 20200335022
    Abstract: The present disclosure provides a drift control circuit, a drift control method, a gate driving unit, a gate driving method and a display device. The drift control circuit includes: a first drift control sub-circuit configured to, during noise releasing performed by the first pull-down module, control first electrodes of pull-down transistors included in the second pull-down module to be coupled to a first control voltage terminal, which is configured to input a first voltage to the first pull-down module during noise releasing performed by the first pull-down module; and a second drift control sub-circuit configured to, during noise releasing performed by the second pull-down module, control first electrodes of pull-down transistors included in the first pull-down module to be coupled to a second control voltage terminal, which is configured to input the first voltage to the second pull-down module during noise releasing performed by the second pull-down module.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 22, 2020
    Inventors: Ruifang DU, Xiaoye MA, Xiaofang GU, Donghui ZHANG, Guodong LIU
  • Publication number: 20200320945
    Abstract: A shift register unit, a shift register circuit and a display panel is provided. The shift register unit includes: an input circuit configured to transmit a power signal to the pull-up node; an output circuit configured to transmit a clock signal to the signal output terminal; a reset circuit configured to transmit a reference signal to the pull-up node and the signal output terminal; a first pull-down control circuit configured to transmit the reference signal to the pull-down control node and the pull-down node; a second pull-down control circuit configured to transmit the power signal to the pull-down control node and the pull-down node; and a pull-down circuit configured to transmit the reference signal to the pull-up node and the signal output terminal.
    Type: Application
    Filed: March 20, 2018
    Publication date: October 8, 2020
    Inventors: Ruifang DU, Xiping WANG, Rui MA, Xiaoye MA
  • Publication number: 20200285102
    Abstract: A liquid crystal display panel includes a light adjusting layer. The light adjusting layer is configured to reduce a yellowing degree of a peripheral display area. The light adjusting layer is located in the peripheral display area in a display area of the liquid crystal display panel, and the peripheral display area is located at a periphery of an intermediate display area in the display area.
    Type: Application
    Filed: November 14, 2018
    Publication date: September 10, 2020
    Inventors: Zijun CAO, Ruifang DU
  • Publication number: 20200090613
    Abstract: There is provided in the present disclosure a shift register unit, including: an input sub-circuit, whose first terminal is coupled to an input signal terminal, and second terminal is coupled to a pull-up node; an output sub-circuit, whose first terminal is coupled to the pull-up node, second terminal is coupled to a clock signal terminal, and third terminal is coupled to an output terminal, and configured to output a clock signal of the clock signal terminal to the output terminal under the control of a level signal of the pull-up node; a first electro-static discharge sub-circuit, whose first terminal is coupled to the pull-up node, second terminal is coupled to an electro-static discharge control terminal, and third terminal is coupled to a ground, and configured to discharge static electricity accumulated at the pull-up node under the control of a level signal of the electro-static discharge control terminal.
    Type: Application
    Filed: July 19, 2018
    Publication date: March 19, 2020
    Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Ruifang Du, Jiyan Ma, Xiaoye Ma, Rui Ma
  • Patent number: 10559278
    Abstract: Embodiments of the disclosure provide a gate driver, a display apparatus and a method for controlling the gate driver. The gate driver comprises a plurality of clock signal terminals; a controlling signal terminal; and N stages of cascaded gate driving circuits. Each of the N stages of cascaded gate driving circuits is configured to pull-up a voltage of an outputting terminal of the gate driving circuit according to a signal at the respective clock signal terminal, and to perform a noise reduction operation according to a signal at the controlling signal terminal. A controller is coupled with the clock signal terminals and the controlling signal terminal, and is configured to detect signals at the plurality of clock signal terminals, and to output a valid level signal to the controlling signal terminal in response to the signal at the clock signal terminal being abnormal.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: February 11, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ruifang Du, Tong Yang, Xiaoye Ma