Patents by Inventor Hyun-Sun Chung

Hyun-Sun Chung 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).

  • Backlight assembly with a light pipe having optical elements and an integral surface diffuser
    Patent number: 6481864
    Abstract: A backlight assembly is disclosed having a light pipe and at least one light source located at an edge of the light pipe. The light pipe has a back surface and a front surface opposite the back surface. The light pipe also has one or more light directing, diffusing, turning, or brightness enhancing film layers adjacent the front surface. The light pipe also has an integral surface diffuser microstructure molded, embossed, or otherwise replicated in the front surface of the light pipe.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: November 19, 2002
    Assignee: Physical Optics Corporation
    Inventors: Abbas Hosseini, Hyun-Sun Chung, Anatoly Vasiliev, Gajendra D. Savant
  • Backlight assembly with a light pipe having an integral surface diffuser
    Patent number: 6347873
    Abstract: A backlight assembly is disclosed having a light pipe and at least one light source located at an edge of the light pipe. The light pipe has a back surface and a front surface opposite the back surface. The light pipe also has one or more light directing, diffusing, turning, or brightness enhancing film layers adjacent the front surface. The light pipe also has an integral surface diffuser microstructure molded, embossed, or otherwise replicated in the front surface of the light pipe.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: February 19, 2002
    Assignee: Physical Optics Corporation
    Inventors: Abbas Hosseini, Hyun-Sun Chung, Anatoly Vasiliev, Gajendra D. Savant
  • Backlight assembly with a light pipe having optical elements and an integral surface diffuser
    Publication number: 20010001595
    Abstract: A backlight assembly is disclosed having a light pipe and at least one light source located at an edge of the light pipe. The light pipe has a back surface and a front surface opposite the back surface. The light pipe also has one or more light directing, diffusing, turning, or brightness enhancing film layers adjacent the front surface. The light pipe also has an integral surface diffuser microstructure molded, embossed, or otherwise replicated in the front surface of the light pipe.
    Type: Application
    Filed: January 12, 2001
    Publication date: May 24, 2001
    Applicant: Physical Optics Corporation
    Inventors: Abbas Hosseini, Hyun-Sun Chung, Anatoly Vasiliev, Gajendra D. Savant