Patents by Inventor Chang Ku HUA

Chang Ku HUA 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: 9494788
    Abstract: A display device includes a first electrode, a second electrode, a third electrode, a lyophobic layer, a first liquid, and a second liquid, where the lyophobic layer is lyophobic to the second liquid. A method of driving the display device includes: providing a first potential difference between the first electrode and the third electrode to thereby cause the first liquid to begin moving toward the second electrode; providing a second potential difference between the second electrode and the third electrode while reducing the first potential difference to thereby cause the first liquid to move toward the first electrode; and removing the second potential difference to thereby cause the first liquid to slow down in its movement toward the first electrode or to stop in its movement toward the first electrode.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: November 15, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Sang Min Shin, Chang Ku Hua, Woo Song Kim, Uk Chul Choi, Mun-Soo Park, So-Hyun Lee
  • Patent number: 9488826
    Abstract: Disclosed is an electrowetting display device including a plurality pixels. Each pixel includes a pixel electrode, a hydrophobic layer, a hydrophobic fluid, and a bank adapted to limit the range of movement of the hydrophobic fluid. The bank has a hydrophobic bank surface and a hydrophilic bank surface, which face each other. The hydrophobic fluid is moved from the hydrophilic bank surface towards the hydrophobic bank surface by the application of a voltage to the pixel electrode.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: November 8, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Sang-Min Shin, Woo-Song Kim, Chang-Ku Hua, Soo-Jin Park, Mun-Soo Park
  • Publication number: 20160062106
    Abstract: Disclosed is an electrowetting display device including a plurality pixels. Each pixel includes a pixel electrode, a hydrophobic layer, a hydrophobic fluid, and a bank adapted to limit the range of movement of the hydrophobic fluid. The bank has a hydrophobic bank surface and a hydrophilic bank surface, which face each other. The hydrophobic fluid is moved from the hydrophilic bank surface towards the hydrophobic bank surface by the application of a voltage to the pixel electrode.
    Type: Application
    Filed: November 9, 2015
    Publication date: March 3, 2016
    Inventors: Sang-Min Shin, Woo-Song Kim, Chang-Ku Hua, Soo-Jin Park, Mun-Soo Park
  • Patent number: 9182588
    Abstract: Disclosed is an electrowetting display device including a plurality pixels. Each pixel includes a pixel electrode, a hydrophobic layer, a hydrophobic fluid, and a bank adapted to limit the range of movement of the hydrophobic fluid. The bank has a hydrophobic bank surface and a hydrophilic bank surface, which face each other. The hydrophobic fluid is moved from the hydrophilic bank surface towards the hydrophobic bank surface by the application of a voltage to the pixel electrode.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 10, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Sang-Min Shin, Woo-Song Kim, Chang-Ku Hua, Soo-Jin Park, Mun-Soo Park
  • Publication number: 20130215095
    Abstract: A display device includes a first electrode, a second electrode, a third electrode, a lyophobic layer, a first liquid, and a second liquid, where the lyophobic layer is lyophobic to the second liquid. A method of driving the display device includes: providing a first potential difference between the first electrode and the third electrode to thereby cause the first liquid to begin moving toward the second electrode; providing a second potential difference between the second electrode and the third electrode while reducing the first potential difference to thereby cause the first liquid to move toward the first electrode; and removing the second potential difference to thereby cause the first liquid to slow down in its movement toward the first electrode or to stop in its movement toward the first electrode.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 22, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Min SHIN, Chang Ku HUA, Woo Song KIM, Uk Chul CHOI, Mun-Soo PARK, So-Hyun LEE