Patents by Inventor Robert W. Zehner

Robert W. Zehner 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).

  • Patent number: 10909936
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: February 2, 2021
    Assignee: E Ink Corporation
    Inventors: Robert W. Zehner, Holly G. Gates, Karl Raymond Amundson, Joanna F. Au, Ara N. Knaian, Alexandros Cosmos Arango, Jonathan L. Zalesky
  • Patent number: 10726798
    Abstract: A method of operating an electro-optic display in which an image is scrolled across the display, and in which a clearing bar is provided between two portions of the image being scrolled, the clearing bar scrolling across in display in synchronization with said two portions of the image, the writing of the clearing bar being effected such that every pixel over which the clearing bar passes is rewritten.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 28, 2020
    Assignee: E Ink Corporation
    Inventors: Demetrious Mark Harrington, Theodore A. Sjodin, Robert W. Zehner, Timothy J. O'Malley, Benjamin Harris Paletsky
  • Publication number: 20200183247
    Abstract: The invention provides an electrophoretic medium comprising at least two types of particles having substantially the same electrophoretic mobility but differing colors. The invention also provides article of manufacture comprising a layer of a solid electro-optic medium, a first adhesive layer on one surface of the electro-optic medium, a release sheet covering the first adhesive layer, and a second adhesive layer on an opposed second surface of the electro-optic medium.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Inventors: Gregg M. DUTHALER, Karl R. AMUNDSON, Barrett COMISKEY, Alberto GOENAGA, John E. RITTER, Michael L. STEINER, Robert W. ZEHNER
  • Patent number: 10599005
    Abstract: The invention provides an electrophoretic medium comprising at least two types of particles having substantially the same electrophoretic mobility but differing colors. The invention also provides article of manufacture comprising a layer of a solid electro-optic medium, a first adhesive layer on one surface of the electro-optic medium, a release sheet covering the first adhesive layer, and a second adhesive layer on an opposed second surface of the electro-optic medium.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: March 24, 2020
    Assignee: E Ink Corporation
    Inventors: Gregg M. Duthaler, Karl R. Amundson, Barrett Comiskey, Alberto Goenaga, John E. Ritter, Michael L. Steiner, Robert W. Zehner
  • Patent number: 10319314
    Abstract: A method for addressing a bistable electro-optic display having at least one pixel comprises applying an addressing pulse to drive the pixel to a first optical state; leaving the pixel undriven for a period of time, thereby permitting the pixel to assume a second optical state different from the first optical state; and applying to the pixel a refresh pulse which substantially restores the pixel to the first optical state, the refresh pulse being short relative to the addressing pulse.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: June 11, 2019
    Assignee: E Ink Corporation
    Inventors: Guy M. Danner, Karl R. Amundson, Alexandros Cosmos Arango, Jay Britton Ewing, Robert W. Zehner
  • Publication number: 20180231865
    Abstract: The invention provides an electrophoretic medium comprising at least two types of particles having substantially the same electrophoretic mobility but differing colors. The invention also provides article of manufacture comprising a layer of a solid electro-optic medium, a first adhesive layer on one surface of the electro-optic medium, a release sheet covering the first adhesive layer, and a second adhesive layer on an opposed second surface of the electro-optic medium.
    Type: Application
    Filed: April 10, 2018
    Publication date: August 16, 2018
    Inventors: Gregg M. Duthaler, Karl R. Amundson, Barrett Comiskey, Alberto Goenaga, John E. Ritter, Michael L. Steiner, Robert W. Zehner
  • Patent number: 9961744
    Abstract: Devices such as electronic book readers, televisions, and so forth may use reflective display technologies. Described herein are devices and methods for ambient light sensing for use in conjunction with displays. A light guide panel is coupled to a light sensor to measure ambient light impinging on the light guide panel. Where the display is reflective, the light guide panel may be configured to provide for illumination of the display.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: May 1, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Jeffrey B. Doar, James Samuel Bowen, Robert W. Zehner, Allen Lee
  • Patent number: 9886886
    Abstract: An electro-optic display, having at least one pixel capable of achieving any one of at least four different gray levels including two extreme optical states, is driven by displaying a first image on the display, and rewriting the display to display a second image thereon, wherein, during the rewriting of the display, any pixel which has undergone a number of transitions exceeding a predetermined value without touching an extreme optical state, is driven to at least one extreme optical state before driving that pixel to its final optical state in the second image.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: February 6, 2018
    Assignee: E Ink Corporation
    Inventors: Karl R. Amundson, Robert W. Zehner, Ara N. Knaian, Benjamin Zion
  • Publication number: 20170357138
    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: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    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
  • Patent number: 9778500
    Abstract: An electro-optic display comprises, in order, a light-transmissive electrically-conductive layer; a layer of a solid electro-optic material; and a backplane (162) bearing a plurality of pixel electrodes, a peripheral portion of the backplane extending outwardly beyond the layer of solid electro-optic material and bearing a plurality of radiation generating means (166) and a plurality of radiation detecting means (168), the radiation generating means and radiation detecting means together being arranged to act as a touch screen.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: October 3, 2017
    Assignee: E Ink Corporation
    Inventors: Holly G. Gates, Robert W. Zehner, Russell J. Wilcox, Matthew J. Aprea
  • Patent number: 9778536
    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: January 20, 2016
    Date of Patent: October 3, 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
  • 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
  • Publication number: 20170178574
    Abstract: A method of operating an electro-optic display in which an image is scrolled across the display, and in which a clearing bar is provided between two portions of the image being scrolled, the clearing bar scrolling across in display in synchronization with said two portions of the image, the writing of the clearing bar being effected such that every pixel over which the clearing bar passes is rewritten.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 22, 2017
    Inventors: Demetrious Mark HARRINGTON, Theodore A. SJODIN, Robert W. ZEHNER, Timothy J. O'MALLEY, Benjamin Harris Paletsky
  • 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
  • Publication number: 20170075186
    Abstract: An electro-optic display including a large area flexible substrate, a plurality of electro-optic display units, and an encapsulating cover sheet secured to the flexible substrate that encapsulates the display units. The encapsulating cover sheet protects the display units from mechanical damage and makes the tiled display units appear as a continuous structure.
    Type: Application
    Filed: November 23, 2016
    Publication date: March 16, 2017
    Inventors: Holly G. GATES, Robert W. ZEHNER, Jonathan D. ALBERT
  • Patent number: 9563099
    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: January 20, 2016
    Date of Patent: February 7, 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
  • Patent number: 9542895
    Abstract: An electro-optic display includes an electro-optic medium, a pixel electrode for applying an electric field to the medium and a column electrode associated with the pixel electrode. To reduce power consumption, when it is necessary to change the voltage on the column electrode from a first value to a second value to change the optical state of the electro-optic medium, the column electrode voltage is first changed to a third value intermediate the first and second values to permit charge to flow to or from the column electrode, and thereafter the column electrode voltage is changed from the third voltage to the second voltage.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: January 10, 2017
    Assignee: E Ink Corporation
    Inventors: Holly G. Gates, Robert W. Zehner, Jonathan D. Albert
  • Publication number: 20160372055
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Application
    Filed: September 2, 2016
    Publication date: December 22, 2016
    Inventors: Robert W. Zehner, Holly G. Gates, Karl Raymond Amundson, Joanna F. Au, Ara N. Knaian, Alexandros Cosmos Arango, Jonathan L. Zalesky
  • Publication number: 20160342065
    Abstract: The invention provides an electrophoretic medium comprising at least two types of particles having substantially the same electrophoretic mobility but differing colors. The invention also provides article of manufacture comprising a layer of a solid electro-optic medium, a first adhesive layer on one surface of the electro-optic medium, a release sheet covering the first adhesive layer, and a second adhesive layer on an opposed second surface of the electro-optic medium.
    Type: Application
    Filed: August 4, 2016
    Publication date: November 24, 2016
    Inventors: Gregg M. Duthaler, Karl Raymond Amundson, Barrett Comiskey, Holly G. Gates, Alberto Goenaga, John E. Ritter, Michael L. Steiner, Russell J. Wilcox, Robert W. Zehner, Anthony Edward Pullen
  • Publication number: 20160314749
    Abstract: An electro-optic display, having at least one pixel capable of achieving any one of at least four different gray levels including two extreme optical states, is driven by displaying a first image on the display, and rewriting the display to display a second image thereon, wherein, during the rewriting of the display, any pixel which has undergone a number of transitions exceeding a predetermined value without touching an extreme optical state, is driven to at least one extreme optical state before driving that pixel to its final optical state in the second image.
    Type: Application
    Filed: July 5, 2016
    Publication date: October 27, 2016
    Inventors: Karl R. Amundson, Robert W. Zehner, Ara N. Knaian, Benjamin Zion