Patents by Inventor Rong-Chang Liang

Rong-Chang Liang 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).

  • Electrophoretic display with thermal control
    Patent number: 7242514
    Abstract: An electrophoretic display (EPD) with thermal control is disclosed for controlling and maintaining an image in extreme temperature environments. Techniques are also disclosed for maintaining the EPD cell threshold voltage for EPD cells comprising an EPD display media at or above a desired level in an environment in which the EPD may be subjected to an extreme temperature. The techniques comprise sensing a sensed temperature associated with the EPD display media, determining whether the sensed temperature satisfies a criterion established to ensure that the display media temperature remains at a level associated with an acceptable EPD cell threshold voltage, and in the event it is determined that the sensed temperature does not satisfy the criterion, controlling the EPD display media temperature as required to bring the sensed temperature to a level that satisfies the criterion.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: July 10, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Jerry Chung, Rong-Chang Liang
  • METHODS AND COMPOSITIONS FOR IMPROVED ELECTROPHORETIC DISPLAY PERFORMANCE
    Publication number: 20070152196
    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: Application
    Filed: March 14, 2007
    Publication date: July 5, 2007
    Inventors: ZARNG-ARH GEORGE WU, Xiaojia Wang, Xin Weng, Yajuan Chen, 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
  • 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
  • Adhesive and sealing layers for electrophoretic displays
    Publication number: 20070036919
    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.
    Type: Application
    Filed: August 4, 2006
    Publication date: February 15, 2007
    Inventors: Xiaojia Wang, Cheri Pereira, Jack Hou, Rong-Chang Liang
  • Adhesive and sealing layers for electrophoretic displays
    Patent number: 7166182
    Abstract: The invention is directed to methods and compositions for improving the adhesion properties and switching performance of an electrophoretic display. The methods and compositions comprise the use of a high dielectric polymer or oligomer and optionally a crosslinking agent.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: January 23, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Cheri Pereira, Jack Hou, Rong-Chang Liang
  • Process for forming a patterned thin film structure for in-mold decoration
    Patent number: 7156945
    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: Grant
    Filed: September 19, 2003
    Date of Patent: January 2, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Yi-Shung Chaug, Xiaojia Wang, Sean Kiluk, Scott Tseng, Hongmei Zang, Rong-Chang Liang
  • Electrophoretic display and novel process for its manufacture
    Patent number: 7158282
    Abstract: This application is directed to electrophoretic displays and semi-finished display panels comprising display cells prepared from the microcup and top-sealing technologies.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: January 2, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Xiaojia Wang, Hongmei Zang
  • Non-random array anisotropic conductive film (ACF) and manufacturing processes
    Publication number: 20060280912
    Abstract: The present invention discloses structures and manufacturing processes of an ACF of improved resolution and reliability of electrical connection using a non-random array of microcavities of predetermined configuration, shape and dimension. The manufacturing process includes the steps of (i) fluidic filling of conductive particles onto a substrate or carrier web comprising a predetermined array of microcavities, or (ii) selective metallization of the array followed by filling the array with a filler material and a second selective metallization on the filled microcavity array. The thus prepared filled conductive microcavity array is then over-coated or laminated with an adhesive film.
    Type: Application
    Filed: May 3, 2006
    Publication date: December 14, 2006
    Inventors: Rong-Chang Liang, Shih-Wei Ho, Eric Liu
  • Composition and process for the sealing of microcups in roll-to-roll display manufacturing
    Patent number: 7144942
    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: August 16, 2002
    Date of Patent: December 5, 2006
    Assignee: SiPix Imaging, Inc.
    Inventors: HongMei Zang, Xiaojia Wang, Rong-Chang Liang
  • Electro-magnetophoresis display
    Patent number: 7142351
    Abstract: The present invention is directed to an electro-magnetophoresis display having either the traditional up/down or dual switching mode. The display cells are filled with an electro-magnetophoretic dispersion comprising particles suspended in a solvent and the particles are both charged and magnetized. The display of the invention prevents undesired movement of the particles in the cells. The magnetic force generated by the magnetic layer(s) eliminates the need to provide cells with a threshold voltage high enough to avoid the cross talk and/or cross bias effects. In addition, the dual switching mode allows the particles to move in the up/down direction as well as the planar direction, thus providing a multicolor display of high color quality at very low cost.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: November 28, 2006
    Assignee: SiPix Imaging, Inc.
    Inventors: Jerry Chung, Rong-Chang Liang
  • Transmissive or reflective liquid crystal display and novel process for its manufacture
    Patent number: 7141279
    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.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: November 28, 2006
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Scott C-J Tseng, Ying-Syi Li