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).

  • Epoxy compositions
    Publication number: 20080090943
    Abstract: An epoxy composition for applications such as one-part adhesives, coatings, prepreg and molding compounds that includes leuco dyes, particularly those comprising a N,N-dialkylamino-, N,N-diarylamino-, or cycloalkylamino-functional group on one of the aromatic rings, as a co-catalyst or co-curing agent. The use of the leuco dye co-catalyst provides improved curing speed of the epoxy composition comprising a latent curing agent/catalyst such as Novacure imidazole microcapsules while maintaining the shelf-life stability. The epoxy may also include a secondary co-catalyst that includes amides and lactams, particularly those comprising a N,N-dialkylamino-, N,N-diarylamino-, or dicycloalkylamino-functional group. Secondary cocatalysts of low mobility at the storage conditions, such as those with a long chain substitutent, dimeric or oligomeric amides or lactams, are particularly preferred.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 17, 2008
    Inventors: Qianfei Xu, Chung-Jen Hou, Rong-Chang Liang
  • PROCESS FOR FORMING A PATTERNED THIN FILM STRUCTURE ON A SUBSTRATE
    Publication number: 20080075839
    Abstract: A process for forming a patterned thin film structure on a substrate is disclosed. A pattern is printed with a material, such as a masking coating or an ink, on the substrate, the pattern being such that, in one embodiment, the desired thin film 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 structures.
    Type: Application
    Filed: July 12, 2007
    Publication date: March 27, 2008
    Inventors: Jeanne Haubrich, Yi-Shung Chaug, Zarng-Arh Wu, Rong-Chang Liang, Xiaojia Wang
  • Methods and compositions for improved electrophoretic display performance
    Patent number: 7347957
    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: February 23, 2004
    Date of Patent: March 25, 2008
    Assignee: SiPix Imaging, Inc.
    Inventors: Zarng-Arh George Wu, Xiaojia Wang, Xin Weng, Yajuan Chen, Rong-Chang Liang
  • ELECTRODE AND CONNECTING DESIGNS FOR ROLL-TO-ROLL FORMAT-FLEXIBLE DISPLAY MANUFACTURING
    Publication number: 20080041967
    Abstract: The present invention generally is directed to electrode designs suitable for roll-to-roll format flexible manufacturing of an EPD. It is also directed to an EPD having a segment design in a repeated pattern across an entire roll of the display. The EPD preferably is microcup-based. The EPD manufactured according to the present invention has the appearance of a roll of wall paper and it can be cut into any desired sizes or formats. The EPD has electrode or trace lines which may be exposed by asymmetrical cutting and stripping without the need of precision registration.
    Type: Application
    Filed: October 26, 2007
    Publication date: February 21, 2008
    Inventors: Jerry Chung, Jack Hou, Rong-Chang Liang
  • Electrode and connecting designs for roll-to-roll format flexible display manufacturing
    Patent number: 7327346
    Abstract: The present invention generally is directed to electrode designs suitable for roll-to-roll format flexible manufacturing of an EPD. It is also directed to an EPD having a segment design in a repeated pattern across an entire roll of the display. The EPD preferably is microcup-based. The EPD manufactured according to the present invention has the appearance of a roll of wall paper and it can be cut into any desired sizes or formats. The EPD has electrode or trace lines which may be exposed by asymmetrical cutting and stripping without the need of precision registration.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: February 5, 2008
    Assignee: SiPix Imaging, Inc.
    Inventors: Jerry Chung, Jack Hou, Rong-Chang Liang
  • 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
  • Compositions and processes for format-flexible, roll-to-roll manufacturing of electrophoretic displays
    Patent number: 7307778
    Abstract: The invention is directed to compositions and processes useful for the roll-to-roll manufacturing of electrophoretic displays.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: December 11, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Xiaojia Wang, Chia-Pu Chang, Sean Kiluk, Zarng-Arh George Wu, Rong-Chang Liang
  • Electro-magnetophoresis display
    Publication number: 20070268567
    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: Application
    Filed: October 6, 2006
    Publication date: November 22, 2007
    Inventors: Jerry Chung, Rong-Chang Liang
  • 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
  • Electrophoretic display with dual mode switching
    Publication number: 20070263277
    Abstract: The present invention relates to an improved EPD which comprises both the traditional up/down switching and the in-plane switching modes. In other words, the improved EPD has dual switching modes. The monochrome EPDs of the present invention are capable of displaying highlight color of choice which is different from the text. For example, white background, blue text, and red highlight can be shown in any selected areas of the display. Furthermore, the full color EPDs of the present invention are capable of displaying high contrast images of high color saturation. Both high quality black and white states are possible in the full color displays of the present invention. The EPDs of the present invention do not need complex circuitry design, and are compatible with low cost and high yield roll-to-roll manufacturing processes.
    Type: Application
    Filed: April 16, 2007
    Publication date: November 15, 2007
    Inventors: Rong-Chang Liang, Jerry Chung, David Chen
  • 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
  • Electrophoretic display with dual-mode switching
    Patent number: 7271947
    Abstract: The present invention relates to an improved EPD which comprises both the traditional up/down switching and the in-plane switching modes. The monochrome EPDs of the present invention are capable of displaying highlight color of choice which is different from the text. Furthermore, the full color EPDs of the present invention are capable of displaying high contrast images of high color saturation. Both high quality black and white states are possible in the full color displays of the present invention. The EPDs of the present invention do not need complex circuitry design, and are compatible with low cost and high yield roll-to-roll manufacturing processes.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: September 18, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Jerry Chung
  • Process for forming a patterned thin film structure on a substrate
    Patent number: 7261920
    Abstract: A process for forming a patterned thin film structure on a substrate is disclosed. A pattern is printed with a material, such as a masking coating or an ink, on the substrate, the pattern being such that, in one embodiment, the desired thin film 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 structures.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: August 28, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Jeanne E. Haubrich, Yi-Shung Chaug, Zarng-Arh George Wu, 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
  • Electrochromic or electrodeposition display and novel process for their manufacture
    Patent number: 7245414
    Abstract: The present invention is directed to an improved electrodeposition and an electrochromic display. The display cells formed from microcups are filled with an electrolyte fluid and are individually sealed with a polymeric sealing layer.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: July 17, 2007
    Assignee: SiPix Imaging, Inc.
    Inventors: Rong-Chang Liang, Jack Hou, Sundaravel P. Ananthavel
  • 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
  • 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