Patents Assigned to E Ink Corporation
  • Multi-color electrophoretic displays
    Patent number: 9740076
    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: Grant
    Filed: January 4, 2016
    Date of Patent: August 22, 2017
    Assignee: E Ink Corporation
    Inventors: Richard J. Paolini, George G. Harris, Jonathan D. Albert, Barrett Comiskey
  • Components and methods for use in electro-optic displays
    Patent number: 9733540
    Abstract: A front plane laminate useful in the manufacture of electro-optic displays comprises, in order, a light-transmissive electrically-conductive layer, a layer of an electro-optic medium in electrical contact with the electrically-conductive layer, an adhesive layer and a release sheet. This front plane laminate can be prepared as a continuous web, cut to size, the release sheet removed and the laminate laminated to a backplane to form a display. Methods for providing conductive vias through the electro-optic medium and for testing the front plane laminate are also described.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: August 15, 2017
    Assignee: E Ink Corporation
    Inventors: Richard D. LeCain, Ara N. Knaian, Steven J. O'Neil, Gregg M. Duthaler, Guy M. Danner, Robert W. Zehner, Alberto Goenaga, Benjamin Max Davis, Randolph W. Chan, Jonathan D. Albert, Glen Crossley
  • Color electro-optic displays, and processes for the production thereof
    Patent number: 9726959
    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: September 23, 2015
    Date of Patent: August 8, 2017
    Assignee: E Ink Corporation
    Inventors: Thomas H. Whitesides, Andrew Y. Oleson, Guy M. Danner, Richard J. Paolini, Jr., Charles Howie Honeyman
  • Electro-optic display with controlled electrochemical reactions
    Patent number: 9726957
    Abstract: An electro-optic display has a viewing surface through which a user views the display, a bistable, non-electrochromic electro-optic medium, and at least one electrode arranged to apply an electric field to the electro-optic medium, the display. The display comprises at least 10 micromoles per square meter of the viewing surface of at least one redox compound having an oxidation potential more negative that about 150 mV with respect to a standard hydrogen electrode, as measured at pH 8.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: August 8, 2017
    Assignee: E Ink Corporation
    Inventors: Stephen J. Telfer, Peter Carsten Bailey Widger, Ana L. Lattes, Dan John Lauber
  • Methods for driving electro-optic displays
    Patent number: 9721495
    Abstract: An electro-optic display having a plurality of pixels is driven from a first image to a second image using a first drive scheme, and then from the second image to a third image using a second drive scheme different from the first drive scheme and having at least one impulse differential gray level having an impulse potential different from the corresponding gray level in the first drive scheme. Each pixel which is in an impulse differential gray level in the second image is driven from the second image to the third image using a modified version of the second drive scheme which reduces its impulse differential The subsequent transition from the third image to a fourth image is also conducted using the modified second drive scheme but after a limited number of transitions using the modified second drive scheme, all subsequent transitions are conducted using the unmodified second drive scheme.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: August 1, 2017
    Assignee: E Ink Corporation
    Inventors: Demetrious Mark Harrington, Kenneth R. Crounse, Karl Raymond Amundson, Teck Ping Sim, Matthew J. Aprea
  • Electrode structures for electro-optic displays
    Patent number: 9715155
    Abstract: Electrode sub-assemblies for use in electro-optic displays comprise an electrically non-conductive substrate, for example poly(ethylene terephthalate); a light-transmissive electrically-conductive ceramic layer, for example indium tin oxide; and a light-transmissive non-ceramic electrically-conductive layer, for example PEDOT:PSS.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: July 25, 2017
    Assignee: E Ink Corporation
    Inventors: Shyamala Subramanian, Ana L. Lattes, Peter Carsten Bailey Widger, David Darrell Miller
  • Reverse driving pulses in electrophoretic displays
    Patent number: 9697778
    Abstract: An electrophoretic medium comprises a fluid and at least one species of particles disposed, When a first addressing impulse is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: July 4, 2017
    Assignee: E Ink Corporation
    Inventors: Stephen J. Telfer, Stephen Bull, Alain Bouchard, Craig A. Herb, Kosta Ladavac, Ana L. Lattes, Jennifer M. Morrison, Richard J. Paolini, Jr., Michael Thomas Regan, Luke M. Slominski, Lee Yezek, Kenneth R. Crounse, J. Ryan Kruse, Christopher L. Hoogeboom, Jason D. Feick, David Darrell Miller
  • Electrophoretic particles and processes for the production thereof
    Patent number: 9688859
    Abstract: Polymer shells similar to those described in U.S. Pat. No. 6,822,782 can be formed on pigment particles by (a) physi-sorping a reagent comprising polymerizable groups on to the pigment particles by treating the particle with a reagent having a polymerizable or polymerization-initiating group, such that the reagent will not desorb from the particle surface when the particle is placed in a hydrocarbon medium; or (b) treating pigment particles bearing nucleophilic groups with a reagent having a polymerizable or polymerization-initiating group, and an electrophilic group, thus attaching the polymerizable or polymerization-initiating groups to the particle surface. The zeta potential of the pigment particles can be varied by a process similar to (b) but using a reagent which does not have a polymerizable or polymerization-initiating group.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: June 27, 2017
    Assignee: E Ink Corporation
    Inventors: Lee Yezek, Andrew A. Drabek, Luke M. Slominski, Jennifer M. Morrison, Stephen J. Telfer, Brian Steinberg
  • Methods, systems, and products for illuminating displays
    Patent number: 9684163
    Abstract: Methods, systems, and products illuminate display devices. Light in a waveguide is frustrated to illuminate an array of picture elements.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 20, 2017
    Assignee: E Ink Corporation
    Inventor: Kevin A. Li
  • Methods for driving electro-optic displays
    Patent number: 9672766
    Abstract: A bistable electro-optic display having a plurality of pixels each of which is capable of displaying at least three optical states, including two extreme optical states, is driven by the method comprising a first drive scheme capable of effecting transitions between all of the gray levels which can be displayed by the pixels; and a second drive scheme which contains only transitions ending at one of the extreme optical states of the pixels.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: June 6, 2017
    Assignee: E Ink Corporation
    Inventor: Theodore A. Sjodin
  • Electro-optic display backplane structures with drive components and pixel electrodes on opposed surfaces
    Patent number: 9671635
    Abstract: This invention relates to an electro-optic display having a backplane with a front surface and a reverse surface on opposed sides of the backplane, a front surface having a plurality of pixel electrodes arranged in a matrix of columns and rows with column and row lines, a reverse surface having at least one driver chip, and conductive vias electrically connecting the column and row lines on the front surface to the driver chip on the reverse surface, such that the entire front surface area may be optically active.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: June 6, 2017
    Assignee: E Ink Corporation
    Inventor: Richard J. Paolini, Jr.
  • Electrophoretic particle, electrophoretic particle dispersion liquid, display medium, and display device
    Patent number: 9671667
    Abstract: An electrophoretic particle includes a polymer having at least a reactive compound represented by the following Formula (I) as a polymerizable component, at least on a surface: wherein in Formula (I), Ra represents a hydrogen atom or a methyl group, X represents a substituted or unsubstituted divalent hydrocarbon group, Y represents a substituted or unsubstituted divalent hydrocarbon group, and Z represents a hydrogen atom, or a substituted or unsubstituted monovalent hydrocarbon group.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: June 6, 2017
    Assignee: E Ink Corporation
    Inventor: Yasuo Yamamoto
  • Electrophoretic displays
    Patent number: 9664978
    Abstract: A dielectrophoretic display comprises a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface; a suspending fluid contained within the cavity; a plurality of at least one type of particle suspended within the suspending fluid; and means for applying to the fluid an electric field effective to cause dielectrophoretic movement of the particles to the side wall of the cavity.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: May 30, 2017
    Assignee: E Ink Corporation
    Inventors: Alexi C. Arango, Joseph M. Jacobson, Karl Raymond Amundson, Dirk Hertel
  • Backplane for electro-optic display
    Patent number: 9632389
    Abstract: A backplane for an electro-optic display comprising pixels with reduced capacitance. The pixel architecture results in a backplane with some voltage spiking, but well-suited for use with electro-optic media having at least a small threshold for switching, for example, electrophoretic media comprising particles.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: April 25, 2017
    Assignee: E Ink Corporation
    Inventors: Andrew P. Ritenour, Gregg M. Duthaler
  • Methods for driving electro-optic displays
    Patent number: 9620067
    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: Grant
    Filed: November 23, 2015
    Date of Patent: April 11, 2017
    Assignee: E Ink Corporation
    Inventors: Demetrious Mark Harrington, Theodore A. Sjodin, Robert W. Zehner, Timothy J. O'Malley, Benjamin Harris Paletsky
  • Method for driving electro-optic displays
    Patent number: 9620066
    Abstract: A large area display comprises multiple sub-units arranged in rows and columns. Each sub-unit has associated row and column drivers, with the column driver driving the column electrodes of all the sub-units a column. A chip select means provides a separate chip select signal to each row of sub-units, so that only one row of sub-units are scanned at a time, and all the sub-units in the selected row are scanned simultaneously. Column data are supplied to the column drivers as a linear series of column data values; and delayed Gate Start Pulse signals are fed to the column drivers in each column of sub-units after the first so that these column drivers receive the delayed Gate Start Pulse signals and apply the appropriate column data values to their associated column electrodes.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: April 11, 2017
    Assignee: E Ink Corporation
    Inventor: Seth J. Bishop
  • Methods for driving electro-optic displays
    Patent number: 9620048
    Abstract: An electro-optic display has a plurality of pixels, each of which is capable of displaying two extreme optical states and at least one intermediate gray level. Each pixel is driven from an initial intermediate gray level to one extreme optical state and then to a first desired intermediate gray level, so producing a first image on the display. The pixel then remains at this first desired intermediate gray level for a finite length of time. The pixel is then driven from this first desired intermediate gray level to the opposed extreme optical state and then to a second desired intermediate gray level, so producing a second image on the display.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: April 11, 2017
    Assignee: E Ink Corporation
    Inventors: Teck Ping Sim, Kenneth R. Crounse
  • Electro-optic display with edge seal
    Patent number: 9612502
    Abstract: Various types of edge seals for protecting electro-optic displays against environmental contaminants are described. In one type of seal, the electro-optic layer is sandwiched between a backplane and a protective sheet and a sealing material extends between the backplane and the protective sheet. In other seals, the protective sheet is secured to the backplane or to a second protective sheet adjacent the backplane. The electro-optic layer can also be sealed between two layers of adhesive or between one layer of adhesive and the backplane. Other seals make use of flexible tapes extending around the periphery of the display.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: April 4, 2017
    Assignee: E INK CORPORATION
    Inventors: Guy M. Danner, Shamus Ford Patry, Charles Howie Honeyman, Thomas H. Whitesides, Michael D. McCreary, Gregg M. Duthaler
  • PROCESS FOR THE PRODUCTION OF ELECTRO-OPTIC DISPLAYS, AND COLOR FILTERS FOR USE THEREIN
    Publication number: 20170075168
    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: November 23, 2016
    Publication date: March 16, 2017
    Applicant: E Ink Corporation
    Inventor: Guy M. Danner
  • Electro-optic displays with reduced remnant voltage
    Patent number: 9564088
    Abstract: The invention provides materials and methods (including driving methods) for reducing the effects of remnant voltages in electro-optic displays.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: February 7, 2017
    Assignee: E Ink Corporation
    Inventors: Russell J. Wilcox, Thomas H. Whitesides, Karl R. Amundson, Guy M. Danner, Richard M. Webber, Charles H. Honeyman, Lan Cao, Richard J. Paolini, Jr., Rajesh Chebiyam