Patents by Inventor Christopher Robert Chalmers

Christopher Robert Chalmers 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).

  • Apparatuses, systems, and methods for microLED (mLED) backplane architectures
    Patent number: 12682829
    Abstract: Methods, apparatuses, and systems to control current through a sub-pixel micro-LED (mLED) of a mLED display using a dynamic current mirror are taught. A dynamic current mirror is shifted to phase zero. Phase zero includes establishing a first voltage for a sub-pixel mLED control transistor. The first voltage is produced using a predetermined reference current. An energy storage device used in the sub-pixel mLED is charged to the first voltage during phase zero. The dynamic current mirror is shifted to phase one. In phase one, the first voltage is used with the sub-pixel mLED control transistor to pass an illumination current through the sub-pixel mLED.
    Type: Grant
    Filed: April 4, 2024
    Date of Patent: July 14, 2026
    Assignee: FORTH DIMENSION DISPLAY, LTD
    Inventors: Christopher Robert Chalmers, Debra Jane Lefley, Jason Darren Drew, Jedrzej Nowakowski, Neil Mallory, Ruiyan Zhao
  • Apparatuses, systems, and methods for MicroLED (mLED) backplane architectures
    Patent number: 12518677
    Abstract: Method, apparatuses, and systems are described to display image data to a sub-pixel within a micro-LED (mLED) display. A sub-pixel image data value is stored at the sub-pixel. The sub-pixel is turned to an ON state. A shared row counter value is provided to the sub-pixel. The shared row counter value and the sub-pixel image data value are compared at the sub-pixel. The sub-pixel is turned to an OFF state if the shared row counter value is equal to or greater than the sub-pixel image data value.
    Type: Grant
    Filed: April 5, 2024
    Date of Patent: January 6, 2026
    Assignee: FORTH DIMENSION DISPLAY, LTD
    Inventors: Christopher Robert Chalmers, Mladen Panovic, Debra Jane Lefley, Jason Darren Drew, Jedrzej Nowakowski, Mark Newsam, Neil Mallory, Robert Charles Beat, Ruiyan Zhao
  • Apparatuses, systems, and methods for MicroLED (mLED) backplane architectures
    Patent number: 12512041
    Abstract: Method, apparatuses, and systems are described to display image data to a sub-pixel within a micro-LED (mLED) display. A sub-pixel image data value is stored at the sub-pixel. The sub-pixel is turned to an ON state. A shared row counter value is provided to the sub-pixel. The shared row counter value and the sub-pixel image data value are compared at the sub-pixel. The sub-pixel is turned to an OFF state if the shared row counter value is equal to or greater than the sub-pixel image data value.
    Type: Grant
    Filed: April 3, 2024
    Date of Patent: December 30, 2025
    Assignee: FORTH DIMENSION DISPLAY, LTD
    Inventors: Christopher Robert Chalmers, Mladen Panovic, Debra Jane Lefley, Gordon John Faulds, Jason Darren Drew, Jedrzej Nowakowski, Mark Newsam, Neil Mallory, Robert Charles Beat, Robert Arthur Creber, Ruiyan Zhao
  • Apparatuses, systems, and methods for MicroLED (mLED) backplane architectures
    Patent number: 12512042
    Abstract: Methods, apparatuses, and systems are described to display image data to a sub-pixel within a micro-LED (mLED) display. A row-based illumination period counter is used to operate sub-pixels within a row of the mLED display. An ON-state signal line and an illumination period signal line are coupled to the sub-pixels in the row. A first counter is incremented by an input clock signal and generates a first output. A second counter receives the first output and the second counter outputs, on the illumination period signal line, a second output that corresponds to an ON time for a sub-pixel. A sub-pixel mLED turns from the ON state to an OFF state when a stored sub-pixel data value is equal to or greater than the second output.
    Type: Grant
    Filed: April 4, 2024
    Date of Patent: December 30, 2025
    Assignee: FORTH DIMENSION DISPLAY, LTD
    Inventors: Christopher Robert Chalmers, Gordon John Faulds, Jason Darren Drew, Mark Newsam, Robert Charles Beat
  • Apparatuses, systems, and methods for MicroLED (mLED) backplane architectures
    Patent number: 11955059
    Abstract: Method, apparatuses, and systems are described to display image data to a sub-pixel within a micro-LED (mLED) display. A sub-pixel image data value is stored at the sub-pixel. The sub-pixel is turned to an ON state. A shared row counter value is provided to the sub-pixel. The shared row counter value and the sub-pixel image data value are compared at the sub-pixel. The sub-pixel is turned to an OFF state if the shared row counter value is equal to or greater than the sub-pixel image data value.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: April 9, 2024
    Assignee: FORTH DIMENSION DISPLAY, LTD
    Inventor: Christopher Robert Chalmers
  • APPARATUSES, SYSTEMS, AND METHODS FOR MicroLED (mLED) BACKPLANE ARCHITECTURES
    Publication number: 20220327992
    Abstract: Method, apparatuses, and systems are described to display image data to a sub-pixel within a micro-LED (mLED) display. A sub-pixel image data value is stored at the sub-pixel. The sub-pixel is turned to an ON state. A shared row counter value is provided to the sub-pixel. The shared row counter value and the sub-pixel image data value are compared at the sub-pixel. The sub-pixel is turned to an OFF state if the shared row counter value is equal to or greater than the sub-pixel image data value.
    Type: Application
    Filed: March 25, 2022
    Publication date: October 13, 2022
    Applicant: FORTH DIMENSION DISPLAYS LTD.
    Inventor: Christopher Robert Chalmers