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).

  • LIQUID-CONTAINING FILM STRUCTURE
    Publication number: 20080020007
    Abstract: The present invention describes a film structure which comprises a plurality of microcups and the microcups are filled with a liquid composition and top-sealed with a sealing layer which is hardened in situ. The liquid composition may be a display fluid or a pharmaceutical composition. The present invention is directed to a liquid crystal display, a display device and a transdermal delivery system.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 24, 2008
    Inventor: HongMei Zang
  • ELECTROPHORETIC DISPLAY AND PROCESS FOR ITS MANUFACTURE
    Publication number: 20080007815
    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: Application
    Filed: April 27, 2007
    Publication date: January 10, 2008
    Inventors: Rong-Chang LIANG, Mary Chan-Park, Scott Tseng, Zarng-Arh Wu, HongMei Zang
  • DURABLE LAYER COMPOSITION FOR IN-MOLD DECORATION
    Publication number: 20070267130
    Abstract: This invention relates to a durable layer for in-mold decoration. The durable layer is formed from a composition comprising (i) a thermally crosslinkable and photochemically or radically graftable polymer, (ii) a non-ethylenical thermal crosslinker, and (iii) a radiation curable multifunctional monomer or oligomer. The durable layer of the present invention has excellent surface quality with a wider geometric tolerance and can be formed at low cost.
    Type: Application
    Filed: May 1, 2007
    Publication date: November 22, 2007
    Inventors: Xiaojia WANG, Haiyan Gu, Fei Wang, HongMei Zang, Tina Wu, Xin Huo, Rong-Chang Liang
  • Microencapsulation processes and compositions for electrophoretic displays
    Patent number: 7286279
    Abstract: The present invention is directed to a method for improving the performance of an electrophoretic display, which method comprises adding a fluorinated quaternary nitrogen salt in either the internal phase or the continuous phase in a microencapsulation process for the formation of pigment-containing microparticles. One or more of the following materials may be further added to the internal phase or continuous phase in the microencapsulation process: a fluorinated protective colloid, a second charge controlling agent or a second monomer or oligomer.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: October 23, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Wenxin Yu, Jing-Den Chen, Chih-Yuan Liao, Haiyan Gu, HongMei Zang, Rong-Chang Liang
  • Composition and process for the sealing of microcups in roll-to-roll display manufacturing
    Publication number: 20070243332
    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: Application
    Filed: October 17, 2006
    Publication date: October 18, 2007
    Inventors: HongMei Zang, Xiaojia Wang, Rong-Chang Liang
  • SEMI-FINISHED DISPLAY PANELS
    Publication number: 20070237962
    Abstract: This application is directed to 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: Application
    Filed: November 22, 2006
    Publication date: October 11, 2007
    Inventors: Rong-Chang Liang, Xiaojia Wang, HongMei Zang
  • Electrophoretic compositions
    Patent number: 7277218
    Abstract: This invention relates to a novel electrophoretic composition having improved colloidal stability, switching performance and temperature latitude.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: October 2, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Jiunn Jye Hwang, HongMei Zang, Yajuan Chen, Xin Weng, Jack Hou, Rong-Chang Liang
  • METHOD FOR INDUCING OR ENHANCING THE THRESHOLD VOLTAGE OF AN ELECTROPHORETIC DISPLAY
    Publication number: 20070187654
    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: Application
    Filed: April 11, 2007
    Publication date: August 16, 2007
    Inventors: Jack Hou, HongMei Zang, Yajuan Chen, Jing-Den Chen, Chih-Yuan Liao, Rong-Chang Liang
  • PROCESS FOR FORMING A PATTERNED THIN FILM STRUCTURE FOR IN-MOLD DECORATION
    Publication number: 20070160762
    Abstract: A process for forming a patterned thin film structure on a substrate or in-mold decoration film is disclosed. A pattern is printed with a material, such as a masking coating or ink, on the substrate, the pattern being such that, in one embodiment, the desired structures will be formed in the areas where the printed material is not present, i.e., a negative image of thin film structure to be formed is printed. In another embodiment, the pattern is printed with a material that is difficult to strip from the substrate, and the desired thin film structures will be formed in the areas where the printed material is present, i.e., a positive image of the thin film structure is printed. The thin film material is deposited on the patterned substrate, and the undesired area is stripped, leaving behind the patterned thin film structure.
    Type: Application
    Filed: December 18, 2006
    Publication date: July 12, 2007
    Inventors: Yi-Shung Chaug, Xiaojia Wang, Sean Kiluk, Scott Tseng, HongMei Zang, Rong-Chang Liang
  • Magnetophoretic and electromagnetophoretic displays
    Publication number: 20070153360
    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: August 24, 2006
    Publication date: July 5, 2007
    Inventors: Ching-Shon Ho, Jerry Chung, Paul Gendler, Rong-Chang Liang, HongMei Zang
  • HIGH PERFORMANCE CAPSULES FOR ELECTROPHORETIC DISPLAYS
    Publication number: 20070138675
    Abstract: The present invention is directed to novel non-aqueous capsules suitable as display cells for an electrophoretic display and the encapsulation process for their manufacture. The present invention is also directed to an encapsulation process for the preparation of non-aqueous capsules suitable as display cells for an electrophoretic display. The process comprises emulsifying an internal phase comprising pigment particles or pigment-containing microparticles dispersed in a halogenated solvent and a halogenated shell-forming material into an external phase comprising a complementary chain extender or crosslinker in an organic solvent.
    Type: Application
    Filed: January 29, 2007
    Publication date: June 21, 2007
    Inventors: Rong-Chang Liang, HongMei Zang
  • Electrophoretic display
    Patent number: 7233429
    Abstract: This invention relates to an electrophoretic display comprising cells of well-defined shape, size and aspect ratio which cells are filled with charged pigment particles dispersed in a solvent, and novel processes for its manufacture.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: June 19, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Zarng-Arh George Wu, HongMei Zang
  • Electrophoretic dispersions
    Patent number: 7226550
    Abstract: This invention relates to electrophoretic displays having improved performance. The threshold promoter of the present invention may induce or significantly enhance the threshold effect by improving the particle-particle interaction and/or the particle-electrode interaction. The promoter may be present in the system as a soluble or micelle molecule in the electrophoretic fluid or an adsorbed or chemically bonded molecule on the surface of particles. The use of such a threshold promoter does not show a detrimental effect on the display switching rate.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: June 5, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Jack Hou, HongMei Zang, Yajuan Chen, Jing-Den Chen, Chih-Yuan Liao, Rong-Chang Liang
  • Compositions For Liquid Crystal Display
    Publication number: 20070098921
    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: December 6, 2006
    Publication date: May 3, 2007
    Inventors: Rong-Chang Liang, HongMei Zang, Haiyan Gu
  • Composition and process for the manufacture of an improved electrophoretic display
    Patent number: 7205355
    Abstract: The invention relates to a display having improved contrast ratio, switching performance, reflectivity at the Dmin state and structural integrity and methods for its manufacture.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: April 17, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, HongMei Zang, Xiaojia Wang
  • Display cell structure and electrode protecting layer compositions
    Publication number: 20070070030
    Abstract: The invention is directed to compositions of display cell structure and electrode protecting layers for improving the performance of display devices. The composition comprises a polar oligomeric or polymeric material having a glass transition temperature below about 100° C., and the resulting display cells or electrode protecting layer have an average crosslinking density of below about 1 crosslink point per 80 Dalton molecular weight.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 29, 2007
    Inventors: HongMei Zang, Kangtai Ren, Jack Hou, Wanheng Wang, Chia-Pu Chang, Jing-Den Chen, Yajuan Chen, Fei Wang, Yi-Shung Chaug
  • High performance capsules for electrophoretic displays
    Patent number: 7184197
    Abstract: The present invention is directed to novel non-aqueous capsules suitable as display cells for an electrophoretic display and the encapsulation process for their manufacture.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: February 27, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, HongMei Zang
  • Compositions and assembly process for liquid crystal display
    Patent number: 7182830
    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: February 4, 2004
    Date of Patent: February 27, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, HongMei Zang, Haiyan Gu
  • Transmissive or reflective liquid crystal display
    Publication number: 20070042135
    Abstract: This invention relates to a liquid crystal display with improved contrast ratio, switching performance, reflectivity at the Dmin state and structural integrity, and methods for its manufacture. The liquid crystal display of the present invention comprises microcups as display cells, wherein the microcups are formed from a microcup composition and filled with a liquid crystal composition.
    Type: Application
    Filed: August 17, 2006
    Publication date: February 22, 2007
    Inventors: Rong-Chang Liang, Scott Tseng, Ying-Syi Li, HongMei Zang
  • Electrophoretic displays with improved high temperature performance
    Publication number: 20070035497
    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: Application
    Filed: July 13, 2006
    Publication date: February 15, 2007
    Inventors: Huiyong Chen, HongMei Zang, Cheri Pereira, Jack Hou, Rong-Chang Liang