Patents by Inventor Ehsanollah Fathi

Ehsanollah Fathi 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: 20240379897
    Abstract: A micro device structure comprising at least part of an edge of a micro device is covered with a metal-insulator-semiconductor (MIS) structure, wherein the MIS structure comprises a MIS dielectric layer and a MIS gate conductive layer, at least one gate pad provided to the MIS gate conductive layer, and at least one micro device contact extended upwardly on a top surface of the micro device.
    Type: Application
    Filed: July 22, 2024
    Publication date: November 14, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi, Hossein Zamani Siboni
  • Patent number: 12094856
    Abstract: A method of manufacturing a pixelated structure may be provided. The method may comprise providing a donor substrate comprising the plurality of pixelated microdevices, bonding a selective set of the pixelated microdevices from the donor substrate to a system substrate; and patterning a bottom conductive layer of the pixelated microdevices after separating the donor substrate from the system substrate. The patterning may be done by fully isolating the layers or leaving some thin layers between the patterns.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: September 17, 2024
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Patent number: 12080685
    Abstract: In a micro-device integration process, a donor substrate is provided on which to conduct the initial manufacturing and pixelation steps to define the micro devices, including functional, e.g. light emitting layers, sandwiched between top and bottom conductive layers. The microdevices are then transferred to a system substrate for finalizing and electronic control integration. The transfer may be facilitated by various means, including providing a continuous light emitting functional layer, breakable anchors on the donor substrates, temporary intermediate substrates enabling a thermal transfer technique, or temporary intermediate substrates with a breakable substrate bonding layer.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: September 3, 2024
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Patent number: 12068428
    Abstract: A vertical current mode solid state device comprising a connection pad and side walls comprising a metal-insulator-semiconductor (MIS) structure, wherein leakage current effect of the vertical device is limited through the side walls by biasing the MIS structure.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: August 20, 2024
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi, Hossein Zamani Siboni
  • Publication number: 20240266330
    Abstract: A method of manufacturing a pixelated structure may be provided. The method may comprise providing a donor substrate comprising the plurality of pixelated microdevices, bonding a selective set of the pixelated microdevices from the donor substrate to a system substrate; and patterning a bottom conductive layer of the pixelated microdevices after separating the donor substrate from the system substrate. The patterning may be done by fully isolating the layers or leaving some thin layers between the patterns.
    Type: Application
    Filed: March 20, 2024
    Publication date: August 8, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20240250230
    Abstract: Methods and structures are disclosed for highly efficient vertical devices. The vertical device comprising a plurality of planar active layers formed on a substrate, at least one of a top layer of the plurality of the layers is formed as a plurality of nano-pillars and a passivation layer formed on a space between the plurality of the nanopillars.
    Type: Application
    Filed: March 6, 2024
    Publication date: July 25, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi, Yunhan Li, Hossein Zamani Siboni
  • Publication number: 20240243162
    Abstract: An integrated optical display system includes a backplane with appropriate electronics, and an array of micro-devices. A touch sensing structure may be integrated into the system. In one embodiment, an integrated circuit and system is integrated on top of micro-devices transferred to a substrate. Openings in a planarization layer (or layers) may be provided to connect the micro-devices with electrodes and other circuitry. Light reflectors may be used to redirect the light, and color conversion layers or color filters may be integrated before the micro-devices or on the substrate surface opposite to the surface of micro-devices.
    Type: Application
    Filed: February 23, 2024
    Publication date: July 18, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Yaser Azizi, Ehsanollah Fathi
  • Publication number: 20240234190
    Abstract: The present disclosure relates to transfer of a selected set of microdevices from a donor substrate to a receiver/system substrate while there can be already microdevices transferred in the system substrate. In particular the invention deals with pads with a hard base and soft shell. In addition, use of a stage to facilitate the microdevice transfer is detailed.
    Type: Application
    Filed: February 22, 2022
    Publication date: July 11, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI, Hossein Zamani SIBONI, Dana Saud Yousef AYYASH
  • Publication number: 20240234624
    Abstract: The present invention discloses development of microdevices with an optical structure on a substrate. In particular it discloses aspects of microdevices having sidewalls, top and bottom sides, and methods to create a housing or cavity using different processes. The processes use protection layers, patterning, and passivation as well as alignment techniques.
    Type: Application
    Filed: May 4, 2022
    Publication date: July 11, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20240186467
    Abstract: The present invention discloses methods to integrate color conversion particle layers in different configurations in a microdevice. The microdevice has many device layers, and additionally comprises color conversion particles on a surface of the microdevice with a light coupling layer between the color conversion particles and the device layers. Further color conversion particles are one of nanowires or embedded quantum dots.
    Type: Application
    Filed: April 21, 2022
    Publication date: June 6, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI
  • Publication number: 20240169899
    Abstract: This disclosure is related to compensation of micro devices based on cartridge information.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 23, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI
  • Publication number: 20240133940
    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 non-receiving pads and the non-interfering area in the donor substrate is maximized. This enables the transfer of micro devices to a receiver substrate with fewer steps.
    Type: Application
    Filed: December 27, 2023
    Publication date: April 25, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20240136215
    Abstract: The present disclosure relates to transfer of a selected set of microdevices from a donor substrate to a receiver/system substrate while there can be already microdevices transferred in the system substrate. In particular the invention deals with pads with a hard base and soft shell. In addition, use of a stage to facilitate the microdevice transfer is detailed.
    Type: Application
    Filed: February 22, 2022
    Publication date: April 25, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI, Hossein Zamani SIBONI, Dana Saud Yousef AYYASH
  • Publication number: 20240124297
    Abstract: The present disclosure relates to transfer of a selected set of microdevices from a donor substrate to a receiver/system substrate while there can be already microdevices transferred in the system substrate. In particular the invention deals with methods to transfer microdevices to a system substrate that do not damage already transferred microdevices, by using donor substrate heights, cavities and use of sacrificial layers.
    Type: Application
    Filed: February 22, 2022
    Publication date: April 18, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI, Hossein Zamani SIBONI, Dana Saud Yousef AYYASH
  • Publication number: 20240120173
    Abstract: The present disclosure relates to integrating microdevices into a system substrate. In particular it relates to measuring microdevices using an electron beam method using one or several tips as Ebeam sources. The disclosure further outlines methods to target Ebeams effectively to produce an optimum result with minimal damage to adjacent microdevices and components.
    Type: Application
    Filed: January 28, 2022
    Publication date: April 11, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI, Chang Ho PARK
  • Patent number: 11929010
    Abstract: This disclosure is related to compensation of micro devices based on cartridge information.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: March 12, 2024
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Patent number: 11916096
    Abstract: An integrated optical display system includes a backplane with appropriate electronics, and an array of micro-devices. A touch sensing structure may be integrated into the system. In one embodiment, an integrated circuit and system is integrated on top of micro-devices transferred to a substrate. Openings in a planarization layer (or layers) may be provided to connect the micro-devices with electrodes and other circuitry. Light reflectors may be used to redirect the light, and color conversion layers or color filters may be integrated before the micro-devices or on the substrate surface opposite to the surface of micro-devices.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: February 27, 2024
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Yaser Azizi, Ehsanollah Fathi
  • Publication number: 20240063209
    Abstract: Various embodiments include methods of fabricating an array of self-aligned vertical solid state devices and integrating the devices to a system substrate. The method of fabricating a self-aligned vertical solid state device comprising: providing a semiconductor substrate, depositing a plurality of device layers on the semiconductor substrate, depositing an ohmic contact layer on an upper surface of one of the plurality of device layers, wherein the device layers comprises an active layer and a doped conductive layer, forming a patterned thick conductive layer on the ohmic contact layer; and selectively etching down the doped conductive layer that does not substantially etch the active layer.
    Type: Application
    Filed: October 27, 2023
    Publication date: February 22, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Patent number: 11892497
    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 non-receiving pads and the non-interfering area in the donor substrate is maximized. This enables the transfer of micro devices to a receiver substrate with fewer steps.
    Type: Grant
    Filed: March 7, 2023
    Date of Patent: February 6, 2024
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20240030195
    Abstract: The present disclosure relates to development of microdevices on a substrate that can be released and transferred to a system substrate. The disclosure further relates to methods to integrate anchors to hold a microdevice to a substrate. The microdevices are in different configurations with respect to anchors, release layers, buffers layers and substrate.
    Type: Application
    Filed: November 12, 2021
    Publication date: January 25, 2024
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Hossein Zamani SIBONI, Ehsanollah FATHI