Patents by Inventor Xiaojia Wang

Xiaojia Wang 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).

  • Publication number: 20190333436
    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 15, 2019
    Publication date: October 31, 2019
    Inventors: Ming WANG, Yu LI, Hui DU, Xiaojia ZHANG, Craig LIN
  • Patent number: 10332435
    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: May 12, 2016
    Date of Patent: June 25, 2019
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Ming Wang, Yu Li, Hui Du, Xiaojia Zhang, Craig Lin
  • Patent number: 9382427
    Abstract: The present invention is directed to an electrophoretic display fluid, in particular, pigment particles dispersed in a solvent or solvent mixture, and methods for their preparation. The pigment particles generated, according to the present invention, are stable in solvent under an electric field and can improve the performance of an electrophoretic display.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: July 5, 2016
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Hui Du, Haiyan Gu, Xiaojia Wang
  • Patent number: 9346987
    Abstract: The invention is directed to compositions and methods for improving the physicomechanical and electro-optical properties of an electrophoretic or liquid crystal display and also to semi-finished or finished display panels with improved physicomechanical properties. The invention is further directed to a display device comprising display cells filled with a display fluid and top-sealed with a top-sealing layer, wherein the top-sealing layer has a thickness of less than 10 microns measured at the center area.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: May 24, 2016
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Xiaojia Wang, Cheri Pereira, Jack Hou, Gary Yih-Ming Kang
  • Patent number: 8902491
    Abstract: The present invention is directed to an electrophoretic fluid comprising uncharged or lightly charged neutral buoyancy particles. The resulting fluid can improve not only image stability but also contrast ratio of a display device, without significantly affecting the switching speed. The present invention is also directed to an electrophoretic display comprising display cells filled with the electrophoretic fluid.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 2, 2014
    Assignee: E Ink California, LLC
    Inventors: Ming Wang, Yu Li, Hui Du, Xiaojia Wang, Haiyan Gu, Roman Ivanov, Robert Sprague
  • Patent number: 8670174
    Abstract: This invention relates to an electrophoretic display fluid comprising a non-mobile or semi-mobile phase and two types of charged pigment particles dispersed in a solvent or solvent mixture, and an electrophoretic display device utilizing such an electrophoretic display fluid. The electrophoretic fluid of the present invention provides improved image qualities.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 11, 2014
    Assignee: SiPix Imaging, Inc.
    Inventors: Robert A. Sprague, Xiaojia Wang
  • Patent number: 8649084
    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: September 2, 2011
    Date of Patent: February 11, 2014
    Assignee: SiPix Imaging, Inc.
    Inventors: Xiaojia Wang, Craig Lin, Robert Sprague
  • Patent number: 8625188
    Abstract: This invention relates to a process for the manufacture of a multi-color electrophoretic display involving adding colorant solutions or dispersions of different colors and charged pigment particles in separate steps. The process comprises a first step of pattern-wise filling colorant solutions or dispersions into microcups in predetermined areas, followed by a step of pattern-wise or non-pattern-wise adding an electrophoretic fluid comprising charged pigment particles dispersed in a dielectric solvent or solvent mixture into the microcups which are pre-filled with the colorants.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: January 7, 2014
    Assignee: SiPix Imaging, Inc.
    Inventors: Xiaojia Wang, Rong-Chang Liang, Gary Yih-Ming Kang
  • Patent number: 8582197
    Abstract: This application is directed to processes for preparing electrophoretic displays and semi-finished display panels comprising display cells prepared from the microcup and top-sealing technologies. The semi-finished display panel comprises an array of display cells sandwiched between two temporary substrate layers, between a temporary substrate layer and a conductor layer or between a temporary substrate layer and a permanent substrate layer, wherein said display cells are filled with an electrophoretic fluid and top-sealed with a polymeric sealing layer formed from a top-sealing composition which is being hardened while on top of the electrophoretic fluid.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: November 12, 2013
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Mary Chan-Park, Scott C-J Tseng, Zarng-Arh George Wu, HongMei Zang, Xiaojia Wang
  • Patent number: 8547628
    Abstract: The invention is directed to methods and compositions useful for improving the performance of electrophoretic displays. The methods comprise adding a conductive filler in the form of nanoparticles and having a volume resistivity of less than about 104 ohm cm into at least one electrode protecting layer of the display.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: October 1, 2013
    Assignee: SiPix Imaging, Inc.
    Inventors: Zarng-Arh George Wu, Xiaojia Wang, Xin Weng, Yajuan Chen, Rong-Chang Liang, HongMei Zang, Yayong Liu
  • Publication number: 20130077155
    Abstract: The present invention is directed to an electrophoretic fluid comprising uncharged or lightly charged neutral buoyancy particles. The resulting fluid can improve not only image stability but also contrast ratio of a display device, without significantly affecting the switching speed. The present invention is also directed to an electrophoretic display comprising display cells filled with the electrophoretic fluid.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Inventors: Ming Wang, Yu Li, Hui Du, Xiaojia Wang, Haiyan Gu, Roman Ivanov, Robert Sprague
  • Publication number: 20130057942
    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: September 2, 2011
    Publication date: March 7, 2013
    Inventors: Xiaojia Wang, Craig Lin, Robert Sprague
  • Patent number: 8361356
    Abstract: The invention relates to a novel sealing composition for the manufacture of an electrophoretic or liquid crystal display, and a sealing process using the composition. The composition allows electrophoretic or liquid crystal cells to be seamlessly sealed and the sealing layer free of any defects.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: January 29, 2013
    Assignee: SiPix Imaging, Inc.
    Inventors: HongMei Zang, Xiaojia Wang
  • Patent number: 8363306
    Abstract: The present invention is directed to an electrophoretic display fluid, in particular, pigment particles dispersed in a solvent or solvent mixture, and methods for their preparation. The pigment particles generated, according to the present invention, are stable in solvent under an electric field, have desired charge and charge density on the particle surface.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: January 29, 2013
    Assignee: SiPix Imaging, Inc.
    Inventors: Hui Du, Xiaojia Wang, HongMei Zang, Haiyan Gu
  • Publication number: 20120313049
    Abstract: The present invention is directed to an electrophoretic display fluid, in particular, pigment particles dispersed in a solvent or solvent mixture, and methods for their preparation. The pigment particles generated, according to the present invention, are stable in solvent under an electric field and can improve the performance of an electrophoretic display.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 13, 2012
    Inventors: Hui Du, Haiyan Gu, Xiaojia Wang
  • Patent number: 8238021
    Abstract: The present invention relates to a process for manufacturing a brightness enhancement structure comprising micro-reflectors. The process comprises forming an array of micro-structures by embossing; and depositing a metal layer over the surface of the micro-structures. The present invention also relates to a process for manufacturing a display device comprising micro-reflectors. The present invention further relates to a display device comprising micro-reflectors and color filters.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: August 7, 2012
    Assignee: Sipix Imaging, Inc.
    Inventors: Robert A. Sprague, Yi-Shung Chaug, HongMei Zang, Xiaojia Wang, Gary Kang
  • Patent number: 8192837
    Abstract: This invention relates to compositions suitable for the formation of an adhesive layer used for in-mold decoration. This invention also relates to in-mold decoration tape or strip, comprising: a carrier layer; a release layer; a durable layer; and an adhesive layer which comprises an adhesive binder, a polymeric particulate material and an inorganic particulate material.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: June 5, 2012
    Assignee: Etansi Inc.
    Inventors: Xiaojia Wang, Cheri Pereria, Pei-Lin Wang, Jing-Den Chen, Rong-Chang Liang
  • Publication number: 20120134010
    Abstract: This invention relates to an electrophoretic display fluid comprising a non-mobile or semi-mobile phase and two types of charged pigment particles dispersed in a solvent or solvent mixture, and an electrophoretic display device utilizing such an electrophoretic display fluid. The electrophoretic fluid of the present invention provides improved image qualities.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 31, 2012
    Inventors: Robert A. Sprague, Xiaojia Wang
  • Patent number: 8179589
    Abstract: The invention is directed to novel methods and compositions useful for improving the performance of electrophoretic displays. The methods comprise adding a high absorbance dye or pigment, or conductive particles, or a conductive filler in the form of nanoparticles and having a volume resistivity of less than about 104 ohm cm, or a charge transport material into an electrode protecting layer of the display.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: May 15, 2012
    Assignee: SiPix Imaging, Inc.
    Inventors: Zarng-Arh George Wu, Jeanne E. Haubrich, Xiaojia Wang, Rong-Chang Liang
  • Patent number: 8159636
    Abstract: The present invention relates to reflective displays and processes for their manufacture.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: April 17, 2012
    Assignee: Sipix Imaging, Inc.
    Inventors: Chenhang Sun, Haiyan Gu, Xiaojia Wang, Yajuan Chen, Jack Hou