Patents by Inventor Songfeng Han

Songfeng Han 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).

  • Publication number: 20240094580
    Abstract: A backlight includes a substrate, a plurality of light sources, a reflective layer, a first diffuser plate, a second diffuser plate, and a color conversion layer. The plurality of light sources are proximate the substrate. The reflective layer is proximate the substrate. The first diffuser plate is over the plurality of light sources. The color conversion layer is between the first diffuser plate and the second diffuser plate.
    Type: Application
    Filed: January 26, 2022
    Publication date: March 21, 2024
    Inventors: Kirk Richard Allen, Songfeng Han, Xiang-Dong Mi, Andrii Varanytsia
  • Patent number: 11927849
    Abstract: A backlight includes a substrate, a plurality of light sources, a light guide plate, and a plurality of rectangular reflectors including rounded corners. The plurality of light sources are proximate the substrate. The light guide plate is proximate the plurality of light sources. The plurality of rectangular reflectors including rounded corners are in a plane parallel to the light guide plate and each reflector corresponds to a light source.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: March 12, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Songfeng Han, Dmitri Vladislavovich Kuksenkov
  • Patent number: 11927791
    Abstract: A backlight includes a substrate, a plurality of light sources proximate the substrate, a first reflective layer on the substrate, and a plurality of patterned reflectors over the plurality of light sources. Each light source includes a size measured in a plane parallel to the substrate. Each patterned reflector is aligned with a corresponding light source and includes a thickness profile. The thickness profile includes a substantially flat section and a curved section extending from and surrounding the substantially flat section. The substantially flat section varies in thickness by no more than plus or minus 20 percent of an average thickness of the substantially flat section. The substantially flat section includes a size in a plane parallel to the substrate equal to or greater than the size of each light source.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: March 12, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Kirk Richard Allen, David Lynn Baker, Songfeng Han, Dmitri Vladislavovich Kuksenkov, Pamela Arlene Maurey, Xiang-Dong Mi, Timothy James Orsley, Andrii Varanytsia
  • Publication number: 20230168541
    Abstract: A backlight includes a substrate, a plurality of light sources, a reflective layer, a first diffuser plate, a second diffuser plate, and a color conversion layer. The plurality of light sources are proximate the substrate. The reflective layer is proximate the substrate. The first diffuser plate is over the plurality of light sources. The color conversion layer is between the first diffuser plate and the second diffuser plate.
    Type: Application
    Filed: April 14, 2021
    Publication date: June 1, 2023
    Inventors: Kirk Richard Allen, Songfeng Han, Pamela Arlene Maurey, Xiang-Dong Mi, Andrii Varanytsia
  • Publication number: 20230124292
    Abstract: A backlight includes a substrate, a plurality of light sources proximate the substrate, a first reflective layer on the substrate, and a plurality of patterned reflectors over the plurality of light sources. Each light source includes a size measured in a plane parallel to the substrate. Each patterned reflector is aligned with a corresponding light source and includes a thickness profile. The thickness profile includes a substantially flat section and a curved section extending from and surrounding the substantially flat section. The substantially flat section varies in thickness by no more than plus or minus 20 percent of an average thickness of the substantially flat section. The substantially flat section includes a size in a plane parallel to the substrate equal to or greater than the size of each light source.
    Type: Application
    Filed: February 2, 2021
    Publication date: April 20, 2023
    Inventors: Kirk Richard Allen, David Lynn Baker, Songfeng Han, Dmitri Vladislavovich Kuksenkov, Pamela Arlene Maurey, Xiang-Dong Mi, Timothy James Orsley, Andrii Varanytsia
  • Publication number: 20220334433
    Abstract: A backlight includes a substrate, a plurality of light sources, a light guide plate, and a plurality of rectangular reflectors including rounded corners. The plurality of light sources are proximate the substrate. The light guide plate is proximate the plurality of light sources. The plurality of rectangular reflectors including rounded corners are in a plane parallel to the light guide plate and each reflector corresponds to a light source.
    Type: Application
    Filed: August 17, 2020
    Publication date: October 20, 2022
    Inventors: Songfeng Han, Dmitri Vladislavovich Kuksenkov
  • Publication number: 20220197090
    Abstract: Novel backlighting units (BLU) for use with LCD panel are disclosed. Such BLUs have direct lighting configuration utilizing blue LED as light source and have quantum dots (QDs) integrated into the architecture of the BLU thus forming thin BLUs that efficiently convert the blue source light into white light while achieving enhanced uniformity in brightness of the white light.
    Type: Application
    Filed: April 23, 2020
    Publication date: June 23, 2022
    Inventors: Songfeng Han, Dmitri Vladislavovich Kuksenkov, Shenping Li, Xiang-Dong Mi