Patents Assigned to VueReal Inc.
  • OPTOELECTRONIC SOLID STATE ARRAY
    Publication number: 20220208738
    Abstract: Structures and methods are disclosed for fabricating optoelectronic solid state array devices. In one case a backplane and array of micro devices is aligned and connected through bumps.
    Type: Application
    Filed: February 21, 2020
    Publication date: June 30, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Mae GAO, Ehsanollah FATHI, Pranav GAVIMENI
  • REPAIR TECHNIQUES FOR MICRO-LED DEVICES AND ARRAYS
    Publication number: 20220199605
    Abstract: What is disclosed are structures and methods for repairing emissive display systems. Various repairing techniques embodiments in accordance with the structures and methods are provided to conquer and mitigate the defected pixels and to increase the yield and reduce the cost of emissive displays systems.
    Type: Application
    Filed: April 8, 2020
    Publication date: June 23, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI
  • PIXEL STRUCTURE FOR REPAIRING DEFECTS FOR MICRO DEVICE INTEGRATED SYSTEMS
    Publication number: 20220189357
    Abstract: What is disclosed are structures and methods for testing and repairing emissive display systems. Systems are tested with use of temporary electrodes which allow operation of the system during testing and are removed afterward. Systems are repaired after identification of defective devices with use of redundant switching from defective devices to functional devices provided on repair contact pads.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 16, 2022
    Applicant: VueReal Inc.
    Inventor: GHOLAMREZA CHAJI
  • TILED DISPLAY FOR OPTOELECTRONIC SYSTEM
    Publication number: 20220165717
    Abstract: The present invention discloses structures and methods for making tiled displays for optoelectronic systems.
    Type: Application
    Filed: March 20, 2020
    Publication date: May 26, 2022
    Applicant: VueReal Inc.
    Inventor: Gholamreza CHAJI
  • MICRODEVICE CARTRIDGE MAPPING AND COMPENSATION
    Publication number: 20220157231
    Abstract: This disclosure is related to compensation of micro devices based on cartridge information.
    Type: Application
    Filed: April 3, 2020
    Publication date: May 19, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI
  • MICRODEVICE CARTRIDGE STRUCTURE
    Publication number: 20220149231
    Abstract: What is disclosed structures and methods of integrating micro devices into system substrate.
    Type: Application
    Filed: February 22, 2020
    Publication date: May 12, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI, Pranav GAVIRNENI, Bahareh SADEGHIMAKKI, Wissal Mahdi ALAYASHI
  • SELECTIVE MICRO DEVICE TRANSFER TO RECEIVER SUBSTRATE
    Publication number: 20220139856
    Abstract: A method of selectively transferring micro devices from a donor substrate to contact pads on a receiver substrate. Micro devices being attached to a donor substrate with a donor force. The donor substrate and receiver substrate are aligned and brought together so that selected micro devices meet corresponding contact pads. A receiver force is generated to hold selected micro devices to the contact pads on the receiver substrate. The donor force is weakened and the substrates are moved apart leaving selected micro devices on the receiver substrate. Several methods of generating the receiver force are disclosed, including adhesive, mechanical and electrostatic techniques.
    Type: Application
    Filed: January 6, 2022
    Publication date: May 5, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • SELECTIVE MICRO DEVICE TRANSFER TO RECEIVER SUBSTRATE
    Publication number: 20220139857
    Abstract: A method of selectively transferring micro devices from a donor substrate to contact pads on a receiver substrate. Micro devices being attached to a donor substrate with a donor force. The donor substrate and receiver substrate are aligned and brought together so that selected micro devices meet corresponding contact pads. A receiver force is generated to hold selected micro devices to the contact pads on the receiver substrate. The donor force is weakened and the substrates are moved apart leaving selected micro devices on the receiver substrate. Several methods of generating the receiver force are disclosed, including adhesive, mechanical and electrostatic techniques.
    Type: Application
    Filed: January 6, 2022
    Publication date: May 5, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • SELECTIVE MICRO DEVICE TRANSFER TO RECEIVER SUBSTRATE
    Publication number: 20220130783
    Abstract: A method of selectively transferring micro devices from a donor substrate to contact pads on a receiver substrate. Micro devices being attached to a donor substrate with a donor force. The donor substrate and receiver substrate are aligned and brought together so that selected micro devices meet corresponding contact pads. A receiver force is generated to hold selected micro devices to the contact pads on the receiver substrate. The donor force is weakened and the substrates are moved apart leaving selected micro devices on the receiver substrate. Several methods of generating the receiver force are disclosed, including adhesive, mechanical and electrostatic techniques.
    Type: Application
    Filed: January 6, 2022
    Publication date: April 28, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Repair techniques for micro-LED devices and arrays
    Patent number: 11302244
    Abstract: What disclosed are structures and methods for repairing emissive display systems. Various repairing techniques embodiments in accordance with the structures and methods are provided to conquer and mitigate the defected pixels and to increase the yield and reduce the cost of emissive displays systems.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: April 12, 2022
    Assignee: VUEREAL INC.
    Inventor: Gholamreza Chaji
  • Pixel structure for repairing defects for micro device integrated systems
    Patent number: 11302225
    Abstract: What is disclosed are structures and methods for testing and repairing emissive display systems. Systems are tested with use of temporary electrodes which allow operation of the system during testing and are removed afterward. Systems are repaired after identification of defective devices with use of redundant switching from defective devices to functional devices provided on repair contact pads.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: April 12, 2022
    Assignee: VueReal Inc.
    Inventor: Gholamreza Chaji
  • MICRO DEVICE ARRANGEMENT IN DONOR SUBSTRATE
    Publication number: 20220059389
    Abstract: This disclosure is related to arranging micro devices in the donor substrate by either patterning or population so that there is no interfering with unwanted pads and the non-interfering area in the donor substrate is maximized. This enables to transfer the devices to receiver substrate with fewer steps.
    Type: Application
    Filed: November 8, 2021
    Publication date: February 24, 2022
    Applicant: VueReal Inc.
    Inventor: Gholamreza Chaji
  • VERTICAL SOLID-STATE DEVICES
    Publication number: 20220037573
    Abstract: As the pixel density of optoelectronic devices becomes higher, and the size of the optoelectronic devices becomes smaller, the problem of isolating the individual micro devices becomes more difficult. A method of fabricating an optoelectronic device, which includes an array of micro devices, comprises: forming a device layer structure including a monolithic active layer on a substrate; forming an array of first contacts on the device layer structure defining the array of micro devices; mounting the array of first contacts to a backplane comprising a driving circuit which controls the current flowing into the array of micro devices; removing the substrate; and forming an array of second contacts corresponding to the array of first contacts with a barrier between each second contact.
    Type: Application
    Filed: October 19, 2021
    Publication date: February 3, 2022
    Applicant: VueReal Inc.
    Inventor: Gholamreza Chaji
  • DISPLAY OPTIMIZATION TECHNIQUES FOR MICRO-LED DEVICES AND ARRAYS
    Publication number: 20220028331
    Abstract: Systems and methods to achieve desired color accuracy, power consumption, and gamma correction in an array of pixels of a micro-LED display. The method and system provides an array of pixels, wherein each pixel comprising a plurality of sub-pixels arranged in a matrix and a driving circuitry configured to provide an individual emission control signal to each sub-pixel of each pixel in the array of pixels to independently control an emission time and a duty cycle of each sub-pixel.
    Type: Application
    Filed: October 5, 2021
    Publication date: January 27, 2022
    Applicant: VueReal Inc.
    Inventor: Gholamreza Chaji
  • PROBE STRUCTURE FOR MICRO DEVICE INSPECTION
    Publication number: 20220003815
    Abstract: What is disclosed are methods and structures of an improved probe card assembly to inspect micro devices.
    Type: Application
    Filed: February 20, 2020
    Publication date: January 6, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Chang Ho PARK
  • MICRODEVICE CARTRIDGE STRUCTURE
    Publication number: 20220005774
    Abstract: What is disclosed is structures and methods of integrating micro devices into system substrate. Further, the disclosure, also relates to methods and structures for enhancing the bonding process of micro-devices into a substrate. More specifically, it relates to expanding the micro device area or bonding area of micro devices.
    Type: Application
    Filed: November 18, 2019
    Publication date: January 6, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah FATHI
  • Micro device arrangement in donor substrate
    Patent number: 11195741
    Abstract: This disclosure is related to arranging micro devices in the donor substrate by either patterning or population so that there is no interfering with unwanted pads and the non-interfering area in the donor substrate is maximized. This enables to transfer the devices to receiver substrate with fewer steps.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: December 7, 2021
    Assignee: VueReal Inc.
    Inventor: Gholamreza Chaji
  • Vertical solid-state devices
    Patent number: 11183623
    Abstract: As the pixel density of optoelectronic devices becomes higher, and the size of the optoelectronic devices becomes smaller, the problem of isolating the individual micro devices becomes more difficult. A method of fabricating an optoelectronic device, which includes an array of micro devices, comprises: forming a device layer structure including a monolithic active layer on a substrate; forming an array of first contacts on the device layer structure defining the array of micro devices; mounting the array of first contacts to a backplane comprising a driving circuit which controls the current flowing into the array of micro devices; removing the substrate; and forming an array of second contacts corresponding to the array of first contacts with a barrier between each second contact.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: November 23, 2021
    Assignee: VueReal Inc.
    Inventor: Gholamreza Chaji
  • IDENTIFYING AND REPAIRING DEFECTS MICRO-DEVICE INTEGRATED SYSTEM
    Publication number: 20210359155
    Abstract: What is disclosed are structures and methods for testing and repairing emissive display systems. Systems are tested with use of temporary electrodes which allow operation of the system during testing and are removed afterward. Systems are repaired after identification of defective devices with use of redundant switching from defective devices to functional devices provided on repair contact pads. Time varying signals coupled to a capacitor are used as well.
    Type: Application
    Filed: November 27, 2020
    Publication date: November 18, 2021
    Applicant: VueReal Inc.
    Inventor: Gholamreza CHAJI
  • STAGGERED AND TILE STACKED MICRODEVICE INTEGRATION AND DRIVING
    Publication number: 20210343828
    Abstract: What is disclosed is structures and methods to integrate microdevices into system or receiver substrates. The integration of microdevices is facilitated by adding staging pads to microdevices before or after transferring. Creating stages after the transfer of a first microdevice to a substrate for the subsequent microdevice transfer to the first (or the second) microdevice transfer. The stage improves the surface profile of the substrate so that next microdevice can be transferred without the first microdevice on the substrate get damaged by or interfere with the surface of the donor or transfer head. Some embodiments further relate to tiled display device and more particularly, to stacking tiles to a backplane to form the tiled display device.
    Type: Application
    Filed: July 14, 2021
    Publication date: November 4, 2021
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Won Kyu Ha, Aaron Daniel Trent Wiersma, Ehsanollah Fathi