Patents by Inventor Xiangchun Xiao

Xiangchun Xiao 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: 7952652
    Abstract: In a thin film transistor liquid crystal display (TFT-LCD), a connection is formed between the gate line and the common electrode line with TFTs. During scanning in one frame, a high voltage signal is applied to the pixels in a next row before the next row is turned on, i.e., a black image is inserted in the normal white mode. When the pixels in one row are in operation and the pixels in the next row are not turned on, a black image data is inserted into the next row. A high voltage is applied before the pixels in a row of the TFT-LCD are turned on, so that a black image is inserted and tailing of motion picture can be alleviated.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: May 31, 2011
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Wenbao Gao, Xinshe Yin, Xiangchun Xiao
  • Publication number: 20110074761
    Abstract: A liquid crystal display driving apparatus comprises a gate driving unit, a source driving unit, and a gate line and a data line intersected with each other to define a pixel region. The source driving unit comprises: a pixel voltage driving circuit for providing a unidirectional voltage signal applied on a pixel electrode in the pixel region; a common voltage driving circuit for providing a common voltage signal which is applied on a common electrode and corresponds to the unidirectional voltage signal, and providing a periodical pulse high-voltage signal.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 31, 2011
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiangchun Xiao, Lujiang Huangfu, Haiyu Zhao, Hongming Zhan
  • Patent number: 7884891
    Abstract: In a thin film transistor liquid crystal display (TFT-LCD), a connection is formed between the gate line and the common electrode line with TFTs. During scanning in one frame, a high voltage signal is applied to the pixels in a next row before the next row is turned on, i.e., a black image is inserted in the normal white mode. When the pixels in one row are in operation and the pixels in the next row are not turned on, a black image data is inserted into the next row. A high voltage is applied before the pixels in a row of the TFT-LCD are turned on, so that a black image is inserted and tailing of motion picture can be alleviated.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: February 8, 2011
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Wenbao Gao, Xinshe Yin, Xiangchun Xiao
  • Publication number: 20100321601
    Abstract: In a thin film transistor liquid crystal display (TFT-LCD), a connection is formed between the gate line and the common electrode line with TFTs. During scanning in one frame, a high voltage signal is applied to the pixels in a next row before the next row is turned on, i.e., a black image is inserted in the normal white mode. When the pixels in one row are in operation and the pixels in the next row are not turned on, a black image data is inserted into the next row. A high voltage is applied before the pixels in a row of the TFT-LCD are turned on, so that a black image is inserted and tailing of motion picture can be alleviated.
    Type: Application
    Filed: August 9, 2010
    Publication date: December 23, 2010
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Wenbao GAO, Xinshe YIN, Xiangchun XIAO
  • Publication number: 20100245325
    Abstract: The present disclosure discloses a source driver chip comprising a reference voltage input terminal and a data signal output channel in which an operational amplifier for outputting a data signal is disposed. When at least one of the operational amplifiers is in idle instead of being used for outputting the data signal, the operational amplifier in idle is connected to the reference voltage input terminal and used to amplify a reference voltage inputted to the reference voltage input terminal; or the operational amplifier in idle is connected to an external circuit and used to amplify an external circuit signal other than the reference voltage. The present disclosure can save the operational amplifiers in the peripheral driving circuit, and reduce the cost of the peripheral driving circuit as well as the power consumption.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 30, 2010
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiangchun XIAO, Xinshe YIN
  • Publication number: 20100245326
    Abstract: A common electrode drive circuit for a liquid crystal display, comprising a plurality of output terminals connected to a plurality of common voltage input terminals of a common electrode layer of the liquid crystal display and adapted for inputting common voltages into the plurality of common voltage input terminals, the common electrode layer driving liquid crystal together with pixel electrodes of the liquid crystal display. The common voltages input by the plurality of output terminals decrease gradually from a data-line beginning end for data signal input to a data-line tail end for data signal input of the liquid crystal display.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 30, 2010
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiangchun XIAO
  • Publication number: 20090185093
    Abstract: In a thin film transistor liquid crystal display (TFT-LCD), a connection is formed between the gate line and the common electrode line with TFTs. During scanning in one frame, a high voltage signal is applied to the pixels in a next row before the next row is turned on, i.e., a black image is inserted in the normal white mode. When the pixels in one row are in operation and the pixels in the next row are not turned on, a black image data is inserted into the next row. A high voltage is applied before the pixels in a row of the TFT-LCD are turned on, so that a black image is inserted and tailing of motion picture can be alleviated.
    Type: Application
    Filed: November 19, 2008
    Publication date: July 23, 2009
    Inventors: Wenbao GAO, Xinshe YIN, Xiangchun XIAO
  • Publication number: 20090051837
    Abstract: The invention relates to an anti-streaking method for liquid crystal display, comprising: generating a periodic pulse voltage signal; applying the periodic pulse voltage signal to a common electrode of liquid crystal display, periodically fully biasing all pixels during the pulse generation, to generate periodic black picture. All pixels are fully biased during the pulse generation, causing the light transmissivity to be nearly lowest, thus generating periodic black screen, by applying the periodic pulse voltage signal to the common electrode of LCD, thus effectively mitigates the streaking phenomena of moving image due to the persistence of vision. Meantime, since the periodic black screen intermittently damages the fixed voltage applied on the liquid crystal, the liquid crystal molecules are subject to a strong reordering process periodically, thus the appearance of remnant image can be mitigated.
    Type: Application
    Filed: May 22, 2008
    Publication date: February 26, 2009
    Inventor: Xiangchun XIAO