Patents by Inventor Chein Wang

Chein Wang 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).

  • Driving methods and circuit for bi-stable displays
    Patent number: 10535312
    Abstract: A method for driving a display having a plurality of pixels, where each pixel is capable of displaying a first color or a second color and is sandwiched between a first electrode and a pixel electrode, the method including applying a driving sequence which includes: (a) for a first time period, applying a first voltage potential between the first electrode and each of the pixel electrodes of a first group of pixels, and applying no voltage potential between the first electrode and each of the pixel electrodes of a second group of pixels of the second color, thereby causing the display device to display an image of the first color with a background of the second color; and (b) for a second time period, applying no voltage potential between the first electrode and each of the pixel electrodes of the first group of pixels, and applying a second voltage potential to each of the pixel electrodes corresponding to the second group of pixels, to clear the onetime image created in step (a).
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: January 14, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Robert A. Sprague, Andrew Ho, Yajuan Chen, HongMei Zang, Jialock Wong, Chein Wang
  • DRIVING METHODS AND CIRCUIT FOR BI-STABLE DISPLAYS
    Publication number: 20180277045
    Abstract: A method for driving a display having a plurality of pixels, where each pixel is capable of displaying a first color or a second color and is sandwiched between a first electrode and a pixel electrode, the method including applying a driving sequence which includes: (a) for a first time period, applying a first voltage potential between the first electrode and each of the pixel electrodes of a first group of pixels, and applying no voltage potential between the first electrode and each of the pixel electrodes of a second group of pixels of the second color, thereby causing the display device to display an image of the first color with a background of the second color; and (b) for a second time period, applying no voltage potential between the first electrode and each of the pixel electrodes of the first group of pixels, and applying a second voltage potential to each of the pixel electrodes corresponding to the second group of pixels, to clear the onetime image created in step (a).
    Type: Application
    Filed: May 22, 2018
    Publication date: September 27, 2018
    Inventors: Robert A. SPRAGUE, Andrew HO, Yajuan CHEN, HongMei ZANG, Jialock WONG, Chein WANG
  • Driving methods and circuit for bi-stable displays
    Patent number: 10002575
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: June 19, 2018
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Robert A. Sprague, Andrew Ho, Yajuan Chen, HongMei Zang, Jialock Wong, Chein Wang
  • DRIVING METHODS AND CIRCUIT FOR BI-STABLE DISPLAYS
    Publication number: 20160335956
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Application
    Filed: May 6, 2016
    Publication date: November 17, 2016
    Inventors: Robert A. SPRAGUE, Andrew HO, Yajuan CHEN, HongMei ZANG, Jialock WONG, Chein WANG
  • Driving methods and circuit for bi-stable displays
    Patent number: 9373289
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: June 21, 2016
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Robert Sprague, Andrew Ho, Yajuan Chen, Hongmei Zang, Jialock Wong, Chein Wang
  • DRIVING METHODS AND CIRCUIT FOR BI-STABLE DISPLAYS
    Publication number: 20120320017
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Application
    Filed: August 28, 2012
    Publication date: December 20, 2012
    Inventors: Robert Sprague, Andrew Ho, Yajuan Chen, Hongmei Zang, Jialock Wong, Chein Wang
  • DRIVING METHODS AND CIRCUIT FOR BI-STABLE DISPLAYS
    Publication number: 20080303780
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 11, 2008
    Inventors: Robert Sprague, Andrew Ho, Yajuan Chen, Hongmei Zang, Jialock Wong, Chein Wang