Patents by Inventor Pankul Dhingra

Pankul Dhingra 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).

  • Sub-pixel uniformity correction clip compensation systems and methods
    Patent number: 12626629
    Abstract: An electronic device may include an electronic display having display pixels and pixel drive circuitry that selects an analog voltage for the display pixels based on a first gray-to-voltage mapping and display image data that is based on compensated image data. The electronic display may also include image processing circuitry that receives input image data in a gray level domain, converts the input image data to a voltage domain based on a second gray-to-voltage mapping different from the first, and applies voltage compensations to voltage levels of the input image data in the voltage domain to generate compensated voltage data. The image processing circuitry may also convert the compensated voltage data from the voltage domain to the gray level domain to generate the compensated image data based on a voltage-to-gray mapping that is the inverse of the first gray-to-voltage mapping.
    Type: Grant
    Filed: September 23, 2024
    Date of Patent: May 12, 2026
    Assignee: Apple Inc.
    Inventors: Maofeng Yang, Aaron J Perley, Arthur L Spence, Chung Kai Chow, David A Doyle, Giovanni Azzellino, Jen-Wei Tsai, Kyung Hoae Koo, Michael H Lim, Pankul Dhingra, Rangarajan Krishnan, Sreenath Rao Vantaram, Weijun Yao, Xiaqing Dong
  • Visible light-emitting device and laser with improved tolerance to crystalline defects and damage
    Patent number: 12334714
    Abstract: Visible spectrum quantum dot (QD) light emitting sources integrable with integrated silicon photonics include a plurality of epitaxially grown InP QDs within an active region. The light emitting sources include light emitting diodes (LEDs) and semiconductor lasers.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: June 17, 2025
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Minjoo Lawrence Lee, Pankul Dhingra
  • Sub-Pixel Uniformity Correction Clip Compensation Systems and Methods
    Publication number: 20250157378
    Abstract: An electronic device may include an electronic display having display pixels and pixel drive circuitry that selects an analog voltage for the display pixels based on a first gray-to-voltage mapping and display image data that is based on compensated image data. The electronic display may also include image processing circuitry that receives input image data in a gray level domain, converts the input image data to a voltage domain based on a second gray-to-voltage mapping different from the first, and applies voltage compensations to voltage levels of the input image data in the voltage domain to generate compensated voltage data. The image processing circuitry may also convert the compensated voltage data from the voltage domain to the gray level domain to generate the compensated image data based on a voltage-to-gray mapping that is the inverse of the first gray-to-voltage mapping.
    Type: Application
    Filed: September 23, 2024
    Publication date: May 15, 2025
    Inventors: Maofeng Yang, Aaron J Perley, Arthur L Spence, Chung Kai Chow, David A Doyle, Giovanni Azzellino, Jen-Wei Tsai, Kyung Hoae Koo, Michael H Lim, Pankul Dhingra, Rangarajan Krishnan, Sreenath Rao Vantaram, Weijun Yao, Xiaqing Dong
  • Visible Light-Emitting Device and Laser with Improved Tolerance to Crystalline Defects and Damage
    Publication number: 20220376477
    Abstract: Visible spectrum quantum dot (QD) light emitting sources integrable with integrated silicon photonics include a plurality of epitaxially grown InP QDs within an active region. The light emitting sources include light emitting diodes (LEDs) and semiconductor lasers.
    Type: Application
    Filed: May 23, 2022
    Publication date: November 24, 2022
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Minjoo Lawrence Lee, Pankul Dhingra