Patents Assigned to E Ink Corporation
  • Dispersion liquid for electrophoretic display, display medium, and display device
    Patent number: 9348193
    Abstract: There is provided a dispersion liquid for electrophoretic display, containing a dispersion medium 50, a colored electrophoretic particle group 34 that is dispersed in the dispersion medium and migrates in the dispersion medium according to an electric field, a non-electrophoretic particle group 36 that is dispersed without migrating in the dispersion medium and has a color different from that of the electrophoretic particle group, and a compound having a neutral polar group and a hydrophobic group, which is contained in the dispersion medium in a ratio of about 0.01 to about 1 mass % based on the entire dispersion liquid.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: May 24, 2016
    Assignee: E INK CORPORATION
    Inventors: Naoki Hiji, Ryota Mizutani, Chikara Manabe, Cao Jun, Toshihide Aoshima, Daisuke Nakayama, Yasuo Yamamoto
  • METHODS AND APPARATUS FOR DRIVING ELECTRO-OPTIC DISPLAYS
    Publication number: 20160140910
    Abstract: Waveforms for driving electro-optic displays, especially bistable electro-optic displays, are modified by one or more of insertion of at least one balanced pulse pair into a base waveform; excision of at least one balanced pulse pair from the base waveform; and insertion of at least one period of zero voltage into the base waveform. Such modifications permit fine control of gray levels.
    Type: Application
    Filed: January 20, 2016
    Publication date: May 19, 2016
    Applicant: E Ink Corporation
    Inventor: Karl Raymond Amundson
  • Multi-color electro-optic displays
    Patent number: 9341916
    Abstract: An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: May 17, 2016
    Assignee: E Ink Corporation
    Inventors: Stephen J. Telfer, Richard J. Paolini, Sunil Krishna Sainis, Randal M. Hill, Isaac W. Moran, Lee Yezek, Alain Bouchard, William Vetterling, George G. Harris, Hywel Morgan, Luke Slominski, Jay William Anseth, Jennifer Quimby, Craig A. Herb
  • MULTI-COLOR ELECTROPHORETIC DISPLAYS
    Publication number: 20160116816
    Abstract: A multi-color electrophoretic medium contains first, second and third species of particles. The first species of particles is light-scattering, while the second and third species of particles are transmissive. A method for driving such a display is also described.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Applicant: E Ink Corporation
    Inventors: Richard J. Paolini, George G. Harris, Jonathan D. Albert, Barrett Corniskey
  • ELECTRO-OPTIC DISPLAY WITH MEASUREMENT APERTURE
    Publication number: 20160103380
    Abstract: Electrical connection between the backplane and the front electrode of an electro-optic display is provided by forming a front plane laminate (100) comprising, in order, a light-transmissive electrically-conductive layer (104), a layer of electro-optic material (106), and a layer of lamination adhesive (108); forming an aperture (114) through all three layers of the front plane laminate (100); and introducing a flowable, electrically-conductive material (118) into the aperture (114), the flowable, electrically-conductive material being in electrical contact with the light-transmissive electrically-conductive layer (104) and extending through the adhesive layer (108).
    Type: Application
    Filed: December 18, 2015
    Publication date: April 14, 2016
    Applicant: E Ink Corporation
    Inventors: Matthew Joseph Kayal, Stephen Joseph Battista, Richard J. Paolini, JR., Shyamala A. Subramanian
  • Materials for use in electrophoretic displays
    Patent number: 9310661
    Abstract: An electrophoretic medium comprises an electrophoretic layer, a layer of lamination adhesive and a polymeric layer disposed between the electrophoretic layer and the lamination adhesive layer, the polymeric layer being impermeable to the fluid. A second form of electrophoretic medium has a layer of a complex of an alkali metal and a polymer in contact with the electrophoretic layer. A third form of electrophoretic medium comprises a plurality of discrete droplets of internal phase in a binder, and further comprises a salt.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: April 12, 2016
    Assignee: E Ink Corporation
    Inventors: Bin Wu, Charles Howie Honeyman, Stephen P. Dudek, Anthony Zalesky, Richard J. Paolini, Jr., Craig A. Herb, George G. Harris
  • Methods for achieving improved color in microencapsulated electrophoretic devices
    Patent number: 9293511
    Abstract: A method for manufacturing a full color, reflective display includes the steps of depositing a first plurality of electrophoretic display elements in substantial registration with a first electrode and a second plurality of electrophoretic display elements in substantial registration with a second electrode. The electrophoretic display elements include a capsule containing a species of particles dispersed in a suspending fluid. The selective deposition of the display elements can be achieved by ink-jet printing methods, screen printing methods or other printing methods. In some embodiments the electrodes are printed onto the substrate before selective deposition of the display elements, while in other embodiments the substrate is provided having the electrodes already disposed on it. In still other embodiments, the sequence of printing of electrodes and electrophoretic display elements can be varied.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: March 22, 2016
    Assignee: E Ink Corporation
    Inventors: Joseph M. Jacobson, Ian D. Morrison, Russell J. Wilcox, Paul Drzaic
  • METHODS FOR DRIVING ELECTRO-OPTIC DISPLAYS
    Publication number: 20160078820
    Abstract: An electro-optic display uses first and second drive schemes differing from each other, for example a slow gray scale drive scheme and a fast monochrome drive scheme. The display is first driven to a pre-determined transition image using the first drive scheme, then driven to a second image, different from the transition image, using the second drive scheme. The display is thereafter driven to the same transition image using the second drive scheme; and from thence to a third image, different from both the transition image and the second image, using the first drive scheme.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 17, 2016
    Applicant: E Ink Corporation
    Inventors: Demetrious Mark Harrington, Theodore A. Sjodin, Robert W. Zehner, Timothy J. O'Malley, Benjamin Harris Paletsky
  • Multi-color electrophoretic displays
    Patent number: 9268191
    Abstract: A multi-color electrophoretic medium contains first, second and third species of particles, the particles having substantially non-overlapping electrophoretic mobilities and bring of three different colors. The particles are dispersed in a fluid having a fourth color. A method for driving such a display is also described.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: February 23, 2016
    Assignee: E Ink Corporation
    Inventors: Richard J. Paolini, Jr., George G. Harris, Jonathan D. Albert, Barrett Comiskey
  • Methods and apparatus for driving electro-optic displays
    Patent number: 9269311
    Abstract: Waveforms for driving electro-optic displays, especially bistable electro-optic displays, are modified by one or more of insertion of at least one balanced pulse pair into a base waveform; excision of at least one balanced pulse pair from the base waveform; and insertion of at least one period of zero voltage into the base waveform. Such modifications permit fine control of gray levels.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: February 23, 2016
    Assignee: E Ink Corporation
    Inventor: Karl Raymond Amundson
  • PROCESSES FOR THE PRODUCTION OF ELECTRO-OPTIC DISPLAYS, AND COLOR FILTERS FOR USE THEREIN
    Publication number: 20160048054
    Abstract: Processes are provided for depositing multiple color filter materials on a substrate to form color filters. In a first process, the surface characteristic of a substrate is modified by radiation so that a flowable form of a first color filter material will be deposited on a first area, and converted to a non-flowable form. A second color filter material can then be deposited on a second area of the substrate. In a second process, first and second color filter materials are deposited on separate donor sheets and transferred by radiation to separate areas of the substrate. A third process uses flexographic printing to transfer the first and second color filter materials to the substrate.
    Type: Application
    Filed: October 29, 2015
    Publication date: February 18, 2016
    Applicant: E Ink Corporation
    Inventor: Guy M. Danner
  • Processes for the production of electro-optic displays
    Patent number: 9238340
    Abstract: Electrical connection between the backplane and the front electrode of an electro-optic display is provided by forming a front plane laminate (100) comprising, in order, a light-transmissive electrically-conductive layer (104), a layer of electro-optic material (106), and a layer of lamination adhesive (108); forming an aperture (114) through all three layers of the front plane laminate (100); and introducing a flowable, electrically-conductive material (118) into the aperture (114), the flowable, electrically-conductive material being in electrical contact with the light-transmissive electrically-conductive layer (104) and extending through the adhesive layer (108).
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: January 19, 2016
    Assignee: E Ink Corporation
    Inventors: Matthew Joseph Kayal, Stephen Joseph Battista, Richard J. Paolini, Jr., Shyamala A. Subramanian, Jr.
  • Methods for driving electro-optic displays
    Patent number: 9230492
    Abstract: An electro-optic display uses first and second drive schemes differing from each other, for example a slow gray scale drive scheme and a fast monochrome drive scheme. The display is first driven to a pre-determined transition image using the first drive scheme, then driven to a second image, different from the transition image, using the second drive scheme. The display is thereafter driven to the same transition image using the second drive scheme; and from then to a third image, different from both the transition image and the second image, using the first drive scheme.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: January 5, 2016
    Assignee: E Ink Corporation
    Inventors: Demetrious Mark Harrington, Theodore A. Sjodin, Robert W. Zehner, Timothy J. O'Malley, Benjamin Harris Paletsky
  • Processes for the production of electro-optic displays, and color filters for use therein
    Patent number: 9199441
    Abstract: Processes are provided for depositing multiple color filter materials on a substrate to form color filters. In a first process, the surface characteristic of a substrate is modified by radiation so that a flowable form of a first color filter material will be deposited on a first area, and converted to a non-flowable form. A second color filter material can then be deposited on a second area of the substrate. In a second process, first and second color filter materials are deposited on separate donor sheets and transferred by radiation to separate areas of the substrate. A third process uses flexographic printing to transfer the first and second color filter materials to the substrate.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: December 1, 2015
    Assignee: E Ink Corporation
    Inventor: Guy M. Danner
  • Patterned electro-optic displays and processes for the production thereof
    Patent number: 9195111
    Abstract: An electro-optic medium comprises at least one leuco dye such that the electro-optic medium can develop at least two differing colors upon exposure to two or more differing stimuli. The medium allows for development of differing colors in differing areas of the medium, thus allowing formation of intrinsic color within differing areas of a single layer of the same electro-optic medium. In an electrophoretic medium, the colors may be developed within the electrophoretic particles or within the fluid in which the particles are dispersed.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: November 24, 2015
    Assignee: E Ink Corporation
    Inventors: Jay William Anseth, Richard J. Paolini, Jr.
  • Electro-optic displays, and processes for the production thereof
    Patent number: 9182646
    Abstract: A first apparatus for displaying a color image comprises an electro-optic display (1002) having a plurality of pixels, each of which can be independently set to a light-transmissive optical state or a substantially opaque optical state, and lighting means (1006) arranged to flash separate pulses of light of at least two differing colors on to one surface of the electro-optic display (1002). A second apparatus for generating pulses of light of differing colors comprising a light source and a filter assembly comprising first (1100) and second (1106) electro-optic layers each having a light-transmissive state and a colored state, the two colored states being different, and electrodes to switch these layers between these states.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: November 10, 2015
    Assignee: E Ink Corporation
    Inventors: Richard J. Paolini, Jr., Thomas Henry Whitesides
  • Color electro-optic displays, and processes for the production thereof
    Patent number: 9170467
    Abstract: A color filter array is provided in an electro-optic display by ink jet printing a plurality of colored areas (22R, 22G, 22B) on one surface of a layer of electro-optic material (12), an adhesive layer or a protective layer. Alternatively, the ink jet printing may be effected on the same layers in various sub-assemblies used to produce electro-optic displays.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: October 27, 2015
    Assignee: E Ink Corporation
    Inventors: Thomas H. Whitesides, Andrew Y. Oleson, Guy M. Danner, Richard J. Paolini, Jr., Charles Howie Honeyman
  • Electro-optic media produced using ink jet printing
    Patent number: 9164207
    Abstract: Ink jet printing can be used in the production of electro-optic displays for (a) forming a layer of a polymer-dispersed electrophoretic medium on a substrate; (b) forming a color electro-optic layer; (c) forming a color filter; and (d) printing electrodes and/or associated conductors on a layer of electro-optic material.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: October 20, 2015
    Assignee: E Ink Corporation
    Inventors: Charles Howie Honeyman, Guy M. Danner
  • Electrophoretic particles and processes for the production thereof
    Patent number: 9158174
    Abstract: In electrophoretic media, it is advantageous to use pigment particles having a polymer chemically bonded to, or cross-linked around, the pigment particles, the polymer comprising repeating units derived from a fluorinated acrylate or fluorinated methacrylate monomer. The polymer desirably has a branched chain structure with side chains extending from a main chain. Desirably, the fluorinated acrylate or fluorinated methacrylate monomer comprises from 1 to 5 mole percent of the polymer.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: October 13, 2015
    Assignee: E Ink Corporation
    Inventors: Michael D. Walls, Jason D. Feick, Thomas H. Whitesides
  • Electro-optic displays, and materials for use therein
    Patent number: 9152004
    Abstract: A first electro-optic display comprises first and second substrates, and an adhesive layer and a layer of electro-optic material disposed between the first and second substrates, the adhesive layer comprising a mixture of a polymeric adhesive material and a hydroxyl containing polymer having a number average molecular weight not greater than about 5000. A second electro-optic display is similar to the first but has an adhesive layer comprising a thermally-activated cross-linking agent to reduce void growth when the display is subjected to temperature changes. A third electro-optic display, intended for writing with a stylus or similar instrument, is produced by forming a layer of an electro-optic material on an electrode; depositing a substantially solvent-free polymerizable liquid material over the electro-optic material; and polymerizing the polymerizable liquid material.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: October 6, 2015
    Assignee: E Ink Corporation
    Inventors: Richard J. Paolini, Jr., Michael D. McCreary, Charles Howie Honeyman, Bin Wu