Patents by Inventor Hengzhen Liang

Hengzhen Liang 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: 9972257
    Abstract: A polarity inversion driving method and apparatus for a liquid crystal display panel, and a liquid crystal display, is provided in order to solve the technical problem in the prior art that the interference strips are concentrated in one line, without increasing the power consumption of the liquid crystal display panel. The method comprises the steps of: generating N polarity control signals of different timings, wherein N is an integer and N?2, and each polarity control signal is used to control a polarity voltage for sub-pixels in one or more columns of a liquid crystal display panel; and outputting the N polarity control signals to polarity control lines in the liquid crystal display panel, wherein each polarity control line corresponds to one polarity control signal.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: May 15, 2018
    Assignees: BOE TECHOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yuting Yang, Hengzhen Liang, Wenhao Zhang, Yang Zhang, Chun Ye
  • Patent number: 9953561
    Abstract: There are provided an array substrate and a driving method thereof, and a display apparatus. Multiple gate lines are arranged on the array substrate, two ends of the gate lines are connected to a first gate driving circuit and a second gate driving circuit respectively, each of the gate lines is divided into a first gate line portion connected to the first gate driving circuit and a second gate line portion connected to the second gate driving circuit, and a switch element is arranged between the first gate line portion and the second gate line portion. Simultaneous turning-on of display TFTs controlled by one gate line is avoided, and the pulling to the voltage of a common electrode is reduced.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 24, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Hui Wang, Hengzhen Liang
  • Patent number: 9953559
    Abstract: The present invention provides a source driver for use in a TFT-LCD, comprising: a data register, a data latch, a digital-to-analog converter and an output buffer. A first loading pulse is provided to the output buffer, such that the output buffer starts to output the gray-scale voltages of odd output ends to corresponding TFT sources in response to a second edge of the first loading pulse from the second level to the first level, which second edge immediately follows the first edge, and a second loading pulse is provided to the output buffer, such that such that the output buffer starts to output the gray-scale voltages of even output ends to corresponding TFT sources in response to a second edge of the second loading pulse from the second level to the first level, which second edge immediately follows the first edge. At least the second edge of the first loading pulse is not synchronous with the second edge of the second loading pulse. A driving circuit and a driving method are further provided.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: April 24, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Hui Wang, Wei Feng, Hengzhen Liang
  • Patent number: 9865204
    Abstract: The present invention relates to the field of display technology, and provides a circuit and a method for eliminating a shutdown after-image, and a display device. The circuit for eliminating the shutdown after-image in a liquid crystal panel comprises a control module configured to apply a common voltage of a liquid crystal panel to a gate line of the liquid crystal panel under the control of a shutdown signal when the liquid crystal panel is shut down. According to the present invention, it is able to eliminate the shutdown after-image and prevent the occurrence of large shutdown current.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: January 9, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY., LTD.
    Inventors: Rongcheng Liu, Douqing Zhang, Hengzhen Liang
  • Patent number: 9715294
    Abstract: The present invention discloses an in-cell touch panel, a manufacturing method thereof and a display device. A plurality of nanowire arrays are added between an array substrate and an opposite substrate, nanowires in each nanowire array extend in a direction perpendicular to the array substrate and the opposite substrate; the newly-added nanowire arrays and s pacers provided between the array substrate and the opposite substrate form piezoelectric sensitive elements. Thus, when cell thickness between the array substrate and the opposite substrate is slightly changed due to pressure on the touch panel by any object, a nanowire array may be slightly deformed by squeeze of a spacer, the deformed nanowire array may release charges to change an electrical signal applied to an electrode wire connected thereto, and a touch point can be positioned by detecting a change in the electrical signal, thus achieving high touch sensitivity.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: July 25, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Wenhao Zhang, Hui Wang, Hengzhen Liang
  • Publication number: 20170205564
    Abstract: A LED strip, a backlight source unit and a display device are provided. The LED strip includes a circuit board, a plurality of LEDs provided on the circuit board, a film stack provided on the circuit board and covering the LEDs, the film stack being configured to convert the light emitted from the LEDs into a uniform surface light source.
    Type: Application
    Filed: September 22, 2016
    Publication date: July 20, 2017
    Inventors: Xiong Xiong, Hengzhen Liang, Xiaozhe Zhang
  • Publication number: 20170169754
    Abstract: The present invention provides a source driver for use in a TFT-LCD, comprising: a data register, a data latch, a digital-to-analog converter and an output buffer. A first loading pulse is provided to the output buffer, such that the output buffer starts to output the gray-scale voltages of odd output ends to corresponding TFT sources in response to a second edge of the first loading pulse from the second level to the first level, which second edge immediately follows the first edge, and a second loading pulse is provided to the output buffer, such that such that the output buffer starts to output the gray-scale voltages of even output ends to corresponding TFT sources in response to a second edge of the second loading pulse from the second level to the first level, which second edge immediately follows the first edge. At least the second edge of the first loading pulse is not synchronous with the second edge of the second loading pulse. A driving circuit and a driving method are further provided.
    Type: Application
    Filed: September 24, 2015
    Publication date: June 15, 2017
    Inventors: Hui WANG, Wei FENG, Hengzhen LIANG
  • Publication number: 20160343291
    Abstract: There are provided an array substrate and a driving method thereof, and a display apparatus. Multiple gate lines are arranged on the array substrate, two ends of the gate lines are connected to a first gate driving circuit and a second gate driving circuit respectively, each of the gate lines is divided into a first gate line portion connected to the first gate driving circuit and a second gate line portion connected to the second gate driving circuit, and a switch element is arranged between the first gate line portion and the second gate line portion. Simultaneous turning-on of display TFTs controlled by one gate line is avoided, and the pulling to the voltage of a common electrode is reduced.
    Type: Application
    Filed: March 20, 2015
    Publication date: November 24, 2016
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Hui WANG, Hengzhen LIANG
  • Publication number: 20150261367
    Abstract: The present invention discloses an in-cell touch panel, a manufacturing method thereof and a display device. A plurality of nanowire arrays are added between an array substrate and an opposite substrate, nanowires in each nanowire array extend in a direction perpendicular to the array substrate and the opposite substrate; the newly-added nanowire arrays and s pacers provided between the array substrate an d the opposite substrate form piezoelectric sensitive elements. Thus, when cell thickness between the array substrate and the opposite substrate is slightly changed due to pressure on the touch panel by any object, a nanowire array may be slightly deformed by squeeze of a spacer, the deformed nanowire array may release charges to change an electrical signal applied to an electrode wire connected thereto, and a touch point can be positioned by detecting a change in the electrical signal, thus achieving high touch sensitivity.
    Type: Application
    Filed: December 6, 2013
    Publication date: September 17, 2015
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Wenhao Zhang, Hui Wang, Hengzhen Liang
  • Patent number: 8976164
    Abstract: The invention relates to a field of display technique. There is disclosed a circuit for eliminating shutdown afterimages of a display. By designing a circuit capable of generating voltages for tuning on TFTs in a time-division way, it is realized that when the display screen shuts down, not only the significant discontinuous differences of pictures are ensured to be not perceived by human eyes so as to eliminate the shutdown afterimages, but also such a problem can be avoided that the circuitry in the panel is burned out by the overlarge instantaneous current caused by the simultaneous turning on of all the TFTs at the moment of shutdown.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: March 10, 2015
    Assignees: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Co., Ltd.
    Inventors: Hengzhen Liang, Yuting Yang
  • Publication number: 20150042548
    Abstract: The present invention relates to the field of display technology, and provides a circuit and a method for eliminating a shutdown after-image, and a display device. The circuit for eliminating the shutdown after-image in a liquid crystal panel comprises a control module configured to apply a common voltage of a liquid crystal panel to a gate line of the liquid crystal panel under the control of a shutdown signal when the liquid crystal panel is shut down. According to the present invention, it is able to eliminate the shutdown after-image and prevent the occurrence of large shutdown current.
    Type: Application
    Filed: September 13, 2013
    Publication date: February 12, 2015
    Applicants: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Rongcheng Liu, Douqing Zhang, Hengzhen Liang
  • Publication number: 20140176411
    Abstract: A polarity inversion driving method and apparatus for a liquid crystal display panel, and a liquid crystal display, is provided in order to solve the technical problem in the prior art that the interference strips are concentrated in one line, without increasing the power consumption of the liquid crystal display panel. The method comprises the steps of: generating N polarity control signals of different timings, wherein N is an integer and N?2, and each polarity control signal is used to control a polarity voltage for sub-pixels in one or more columns of a liquid crystal display panel; and outputting the N polarity control signals to polarity control lines in the liquid crystal display panel, wherein each polarity control line corresponds to one polarity control signal.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 26, 2014
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yuting Yang, Hengzhen Liang, Wenhao Zhang, Yang Zhang, Chun Ye
  • Publication number: 20140085289
    Abstract: The invention relates to a field of display technique. There is disclosed a circuit for eliminating shutdown afterimages of a display. By designing a circuit capable of generating voltages for tuning on TFTs in a time-division way, it is realized that when the display screen shuts down, not only the significant discontinuous differences of pictures are ensured to be not perceived by human eyes so as to eliminate the shutdown afterimages, but also such a problem can be avoided that the circuitry in the panel is burned out by the overlarge instantaneous current caused by the simultaneous turning on of all the TFTs at the moment of shutdown.
    Type: Application
    Filed: July 15, 2013
    Publication date: March 27, 2014
    Inventors: Hengzhen Liang, Yuting Yang