Patents by Inventor Xiaojia Zhang

Xiaojia Zhang 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).

  • Color display device
    Patent number: 8717664
    Abstract: The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of pigment particles, having different levels of size, threshold voltage or charge intensity.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: May 6, 2014
    Assignee: SiPix Imaging, Inc.
    Inventors: Ming Wang, Yu Li, Hui Du, Xiaojia Zhang
  • COLOR DISPLAY DEVICE
    Publication number: 20140092466
    Abstract: The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of pigment particles, having different levels of size, threshold voltage or charge intensity.
    Type: Application
    Filed: May 1, 2013
    Publication date: April 3, 2014
    Applicant: SiPix Imaging, Inc.
    Inventors: Ming Wang, Yu Li, Hui Du, Xiaojia Zhang, Craig Lin
  • COLOR DISPLAY DEVICE
    Publication number: 20140092465
    Abstract: The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of pigment particles, having different levels of size, threshold voltage or charge intensity.
    Type: Application
    Filed: October 2, 2012
    Publication date: April 3, 2014
    Applicant: SiPix Imaging, Inc.
    Inventors: Ming WANG, Yu LI, Hui DU, Xiaojia ZHANG
  • COLOR DISPLAY DEVICES
    Publication number: 20140078036
    Abstract: The present invention is directed to a color display comprising an electrophoretic fluid comprising two types of pigment particles of contrasting colors and carrying opposite charge polarities dispersed in a clear and colorless solvent, wherein said electrophoretic fluid is sandwiched between a common electrode and a plurality of colored sub-pixel electrodes or colored pixel electrodes.
    Type: Application
    Filed: November 18, 2013
    Publication date: March 20, 2014
    Applicant: SiPix Imaging, Inc.
    Inventors: Xiaojia ZHANG, Craig Lin, Robert A. Sprague
  • Color display devices
    Patent number: 8605354
    Abstract: The present invention is directed to a color display comprising an electrophoretic fluid comprising two types of pigment particles of contrasting colors and carrying opposite charge polarities dispersed in a clear and colorless solvent, wherein said electrophoretic fluid is sandwiched between a common electrode and a plurality of colored sub-pixel electrodes or colored pixel electrodes.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: December 10, 2013
    Assignee: SiPix Imaging, Inc.
    Inventors: Xiaojia Zhang, Craig Lin, Robert A. Sprague
  • MULTIPLE VOLTAGE LEVEL DRIVING FOR ELECTROPHORETIC DISPLAYS
    Publication number: 20130300727
    Abstract: This application is directed to driving methods for electrophoretic displays. The driving methods comprise applying different voltages selected from multiple voltage levels, to pixel electrodes and optionally also to the common electrodes. In one embodiment, the different voltages are selected from a group consisting of 0V, at least two levels of positive voltage and at least two levels of negative voltage. The driving method is also suitable for a color display device.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 14, 2013
    Applicant: SiPix Imaging, Inc.
    Inventors: Craig LIN, Tin Pham, Bryan Chan, Manasa Peri, Ming Wang, Yu Li, Hui Du, Xiaojia Zhang
  • SHUTTER MODE FOR COLOR DISPLAY DEVICES
    Publication number: 20130208338
    Abstract: The present invention is directed to a color display comprising an electrophoretic fluid which comprises one or two types of pigment particles dispersed in a clear and colorless or clear and colored solvent, wherein said electrophoretic fluid is sandwiched between a common electrode and a plurality of driving electrodes. The driving electrodes are kept at a certain distance in order to expose a background layer.
    Type: Application
    Filed: February 9, 2012
    Publication date: August 15, 2013
    Inventors: Ming Wang, Craig Lin, Roman Ivanov, Xiaojia Zhang, Robert A. Sprague
  • COLOR DISPLAY DEVICES
    Publication number: 20130057463
    Abstract: The present invention is directed to a color display comprising an electrophoretic fluid comprising two types of pigment particles of contrasting colors and carrying opposite charge polarities dispersed in a clear and colorless solvent, wherein said electrophoretic fluid is sandwiched between a common electrode and a plurality of colored sub-pixel electrodes or colored pixel electrodes.
    Type: Application
    Filed: February 10, 2012
    Publication date: March 7, 2013
    Inventors: Xiaojia Zhang, Craig Lin, Robert A. Sprague
  • COLOR ELECTROPHORETIC DISPLAY
    Publication number: 20120194899
    Abstract: This invention relates to an electrophoretic display fluid comprising non-charged or slightly charged color particles and at least one type of charged pigment particles, all dispersed in a solvent or solvent mixture, and an electrophoretic display device utilizing such a display fluid. The electrophoretic fluid of the present invention provides improved image qualities.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 2, 2012
    Inventor: Xiaojia Zhang
  • Cement and cement composition having improved rheological properties
    Patent number: 5753744
    Abstract: An improved hydraulic cement and resultant hydraulic cement composition which has an alkyl terminated alkoxy amine derivative of maleic acid based polymer or copolymer uniformly distributed therein.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: May 19, 1998
    Assignee: W.R. Grace & Co.-Conn.
    Inventors: David Charles Darwin, Ellis Martin Gartner, Ahmad Arfaei, Xiaojia Zhang