Patents by Inventor James Walker Carswell

James Walker Carswell 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).

  • Collimation of light emitted by light emitting diodes using walls extending through transparent semiconductor
    Patent number: 11508890
    Abstract: A display device includes a plurality of light emitting diodes (LEDs) having walls that extend through a transparent semiconductor layer and beyond the surface of the transparent semiconductor layer. Each of the walls surrounds at least part of each of the plurality of LEDs to collimate the light emitted by the plurality of LEDs. In some embodiments, the walls collimate the light emitted by the LEDs by reflecting the light or absorbing a portion of the light. The display device may further include an array of optical lenses that faces the surface of the transparent semiconductor layer to further collimate the light emitted from the LEDs.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: November 22, 2022
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Mohsin Aziz, Jun-Youn Kim, Samir Mezouari, Abdul Shakoor, James Walker Carswell
  • COLLIMATION OF LIGHT EMITTED BY LIGHT EMITTING DIODES USING WALLS EXTENDING THROUGH TRANSPARENT SEMICONDUCTOR
    Publication number: 20220310891
    Abstract: A display device includes a plurality of light emitting diodes (LEDs) having walls that extend through a transparent semiconductor layer and beyond the surface of the transparent semiconductor layer. Each of the walls surrounds at least part of each of the plurality of LEDs to collimate the light emitted by the plurality of LEDs. In some embodiments, the walls collimate the light emitted by the LEDs by reflecting the light or absorbing a portion of the light. The display device may further include an array of optical lenses that faces the surface of the transparent semiconductor layer to further collimate the light emitted from the LEDs.
    Type: Application
    Filed: March 26, 2021
    Publication date: September 29, 2022
    Inventors: Mohsin Aziz, Jun-Youn Kim, Samir Mezouari, Abdul Shakoor, James Walker Carswell