Patents by Inventor Hongmei Zang

Hongmei Zang 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).

  • Method for inducing or enhancing the threshold voltage of an electrophoretic display
    Patent number: 7767112
    Abstract: This invention relates to electrophoretic displays having improved performance. The invention also relates to a method for inducing or enhancing the threshold voltage of an electrophoretic display, which method comprises adding a threshold promoter into an electrophoretic fluid which comprises charged pigment particles or pigment-containing microparticles dispersed in a dielectric solvent or solvent mixture.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: August 3, 2010
    Assignee: SiPix Imaging, Inc.
    Inventors: Jack Hou, HongMei Zang, Yajuan Chen, Jing-Den Chen, Chih-Yuan Liao, Rong-Chang Liang
  • Electrophoretic display
    Patent number: 7715088
    Abstract: This invention relates to an electrophoretic display comprising a plurality of cells, each of said cells comprises: a) partition walls; b) an electrophoretic fluid filled therein; c) a polymeric sealing layer to enclose the electrophoretic fluid within the cell; and d) an interface between the electrophoretic fluid and the sealing layer.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: May 11, 2010
    Assignee: Sipix Imaging, Inc.
    Inventors: Rong-Chang Liang, Mary Chan-Park, Scott C-J Tseng, Zarng-Arh George Wu, HongMei Zang
  • MAGNETOPHORETIC AND ELECTROMAGNETOPHORETIC DISPLAYS
    Publication number: 20100079850
    Abstract: The present invention is directed to a display device which comprises two layers of insulating substrate, at least the substrate on the viewing side is transparent, an array of display cells sandwiched between the two layers of substrate, a writing means, and optionally an erasing means to magnetically or electrically erase the image. The display cells are filled with a dispersion of magnetic particles which may be charged or non-charged. The display of the invention eliminates the use of the transparent conductor film, such as ITO, on the viewing side. Therefore, the displays of this invention are more cost effective, more flexible and durable and capable of higher image contrast ratio and higher reflectance in the Dmin area.
    Type: Application
    Filed: July 24, 2009
    Publication date: April 1, 2010
    Inventors: Ching-Shon HO, Jerry Chung, Paul Gendler, Rong-Chang Liang, HongMei Zang
  • ELECTROPHORETIC DISPERSIONS
    Publication number: 20100040966
    Abstract: This invention relates to improved electrophoretic dispersions and a method for improving the performance of an electrophoretic display. The invention also relates to a method of inducing or enhancing the threshold voltage of an electrophoretic dispersion.
    Type: Application
    Filed: May 22, 2009
    Publication date: February 18, 2010
    Inventors: Haiyan Gu, HongMei Zang, Jiunn Jye Hwang, Xin Weng, Jack Hou, Chih-Yuan Liao, Shih-Wei Ho, Rong-Chang Liang
  • Electrophoretic displays with improved high temperature performance
    Patent number: 7616374
    Abstract: The invention is directed to a novel sealing composition and a method for improving performance of an electrophoretic display, especially at high temperatures. The invention is also directed to an electrophoretic display comprising display cells wherein said display cells are filled with an electrophoretic fluid and sealed with a sealing layer formed from a sealing composition comprising a thermoplastic elastomer and a crosslinking system.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: November 10, 2009
    Assignee: Sipix Imaging, Inc.
    Inventors: Huiyong Paul Chen, HongMei Zang, Cheri Pereira, Jack Hou, Rong-Chang Liang
  • Compositions for liquid crystal display
    Patent number: 7615325
    Abstract: This invention relates to compositions and an assembly process for the manufacture of liquid crystal displays. The assembly process is especially advantageous because it can be easily scalable to roll-to-roll continuous manufacturing of liquid crystal displays. The invention is directed to a photoalignable top-sealing composition for top-sealing a liquid crystal display cell.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: November 10, 2009
    Assignee: Sipix Imaging, Inc.
    Inventors: Rong-Chang Liang, HongMei Zang, Haiyan Gu
  • DRIVING METHODS FOR BISTABLE DISPLAYS
    Publication number: 20090267970
    Abstract: The disclosure relates to driving methods for bistable displays, in particular, driving methods comprising interleaving driving waveforms.
    Type: Application
    Filed: April 21, 2009
    Publication date: October 29, 2009
    Inventors: Jialock Wong, Yajuan Chen, Robert Sprague, Hongmei Zang
  • Magnetophoretic and electromagnetophoretic displays
    Patent number: 7580180
    Abstract: The present invention is directed to a display device which comprises two layers of insulating substrate, at least the substrate on the viewing side is transparent, an array of display cells sandwiched between the two layers of substrate, a writing means, and optionally an erasing means to magnetically or electrically erase the image. The display cells are filled with a dispersion of magnetic particles which may be charged or non-charged. The display of the invention eliminates the use of the transparent conductor film, such as ITO, on the viewing side. Therefore, the displays of this invention are more cost effective, more flexible and durable and capable of higher image contrast ratio and higher reflectance in the Dmin area.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: August 25, 2009
    Assignee: Sipix Imaging, Inc.
    Inventors: Ching-Shon Ho, Jerry Chung, Paul Gendler, Rong-Chang Liang, HongMei Zang
  • Electrophoretic dispersions
    Patent number: 7572394
    Abstract: This invention relates to improved electrophoretic dispersions and a method for improving the performance of an electrophoretic display.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: August 11, 2009
    Assignee: Sipix Imaging, Inc.
    Inventors: Haiyan Gu, HongMei Zang, Jiunn Jye Hwang, Xin Weng, Jack Hou, Chih-Yuan Liao, Shih-Wei Ho, Rong-Chang Liang
  • Electrophoretic display and process for its manufacture
    Patent number: 7557981
    Abstract: This invention relates to an electrophoretic display comprising cells which are filled with charged particles dispersed in a solvent and are individually sealed with a polymeric sealing layer.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: July 7, 2009
    Assignee: Sipix Imaging, Inc.
    Inventors: Rong-Chang Liang, Mary Chan-Park, Scott C-J Tseng, Zarng-Arh George Wu, HongMei Zang
  • Electrophoretic display and process for its manufacture
    Patent number: 7522332
    Abstract: This invention relates to an electrophoretic display comprising cells which are filled with charged particles dispersed in a solvent and are individually sealed with a polymeric sealing layer.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: April 21, 2009
    Assignee: Sipix Imaging, Inc.
    Inventors: Rong-Chang Liang, Mary Chan-Park, Scott C-J Tseng, Zarng-Arh George Wu, HongMei Zang
  • Roll-to-roll embossing tools and processes
    Patent number: 7470386
    Abstract: The invention is directed to a polymer shim and a roll-to-roll process for its manufacture.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: December 30, 2008
    Assignee: Sipix Imaging, Inc.
    Inventors: Gary Y. M. Kang, Scott C. J. Tseng, HongMei Zang, Rong-Chang Liang
  • DRIVING METHODS AND CIRCUIT FOR BI-STABLE DISPLAYS
    Publication number: 20080303780
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 11, 2008
    Inventors: Robert Sprague, Andrew Ho, Yajuan Chen, Hongmei Zang, Jialock Wong, Chein Wang
  • COMPOSITIONS FOR LIQUID CRYSTAL DISPLAY
    Publication number: 20080272334
    Abstract: This invention relates to compositions and an assembly process for the manufacture of liquid crystal displays. The assembly process is especially advantageous because it can be easily scalable to roll-to-roll continuous manufacturing of liquid crystal displays. The invention is directed to a photoalignable top-sealing composition for top-sealing a liquid crystal display cell.
    Type: Application
    Filed: July 21, 2008
    Publication date: November 6, 2008
    Inventors: Rong-Chang Liang, HongMei Zang, Haiyan Gu
  • IN MOLD MANUFACTURE OF AN OBJECT WITH EMBEDDED DISPLAY PANEL
    Publication number: 20080224361
    Abstract: This invention relates to an object having a display panel embedded in its top surface and processes for its manufacture. The process comprises the steps of: forming an in-mold display transfer film or foil which comprises a temporary carrier layer, a release layer, a display panel, an adhesive layer and optionally a durable layer; feeding said in-mold display transfer film or foil into a mold with the temporary carrier film in contact with the inner surface of the mold; forming an object in the mold and transferring the in-mold display transfer film or foil onto the object; removing the object formed from the mold; and simultaneously removing both temporary carrier layer and release layer.
    Type: Application
    Filed: May 21, 2008
    Publication date: September 18, 2008
    Inventors: Rong-Chang Liang, Scott C.J. Tseng, Jerry Chung, HongMei Zang, Xiaojia Wang, Y. S. Chaug, Feng Y. Dai
  • FLUORINATED DYES OR COLORANTS AND THEIR USES
    Publication number: 20080173847
    Abstract: The present invention relates to novel fluorinated dyes or colorants having high solubility and low viscosity in halogenated, especially fluorinated, solvents. The dyes or colorants of the present invention have shown to improve the performance of electrophoretic displays. The invention is particularly directed to a fluorinated porphyrin dye or colorant expressed by Formula (VII).
    Type: Application
    Filed: March 21, 2008
    Publication date: July 24, 2008
    Inventors: Jin Yang, Kai-Chia Feng, Ying-Syi Li, HongMei Zang, Hong Wang, Chien-Hung Chou, Rong-Chang Liang
  • In mold manufacture of an object with embedded display panel
    Patent number: 7401758
    Abstract: This invention relates to an object having a display panel embedded in its top surface and processes for its manufacture. This invention also relates to an in-mold display transfer film or foil, which comprises a temporary carrier film, a release layer, a display panel, an adhesive or tie layer and optionally a durable layer.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: July 22, 2008
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C. J. Tseng, Jerry Chung, HongMei Zang, Xiaojia Wang, Yi-Shung Chaug, Feng Y. Dai
  • RELEASE LAYER FOR IN-MOLD DECORATION
    Publication number: 20080152855
    Abstract: This invention relates to a composition suitable for the formation of a release layer in an in-mold decoration or thermal transfer printing process. The invention also relates to a process for the formation of a release layer comprising dispersing or dissolving the release layer composition of the present invention in a solvent followed by curing said composition.
    Type: Application
    Filed: February 28, 2008
    Publication date: June 26, 2008
    Inventors: Fei Wang, Scott C.J. Tseng, Xiaojia Wang, Kai-Chia Feng, Haiyan Gu, HongMei Zang, Rong-Chang Liang
  • Fluorinated dyes or colorants and their uses
    Patent number: 7390901
    Abstract: This invention relates to novel fluorinated dyes or colorants having high solubility and low viscosity in halogenated, especially fluorinated, solvents. The dyes or colorants of the present invention have shown to improve the performance of electrophoretic displays.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: June 24, 2008
    Assignee: SiPix Imaging, Inc.
    Inventors: Jin Yang, Kai-Chia Feng, Ying-Syi Li, HongMei Zang, Hong Wang, Chien-Hung Chou, Rong-Chang Liang
  • Process for imagewise opening and filling color display components and color displays manufactured thereof
    Patent number: 7385751
    Abstract: This invention relates to the field of electrophoretic displays. In particular, it relates to imagewise opening, filling and sealing multicolor display components and the manufacture of multicolor displays.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: June 10, 2008
    Assignee: SiPix Imaging, Inc.
    Inventors: Xianhai Chen, HongMei Zang, Zarng-Arh George Wu, Rong-Chang Liang