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: 20220328715
    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: June 28, 2022
    Publication date: October 13, 2022
    Inventors: Gholamreza Chaji, Ehsanollah Fathi, Hossein Zamani Siboni
  • Publication number: 20220302338
    Abstract: A vertical solid state device comprising: a connection pad; and side walls comprising a metal-insulator-semiconductor (MIS) structure; wherein a gate of the MIS structure is shorted to at least one contact of the vertical solid state device and a threshold voltage (VT) of the MIS structure is adjusted to increase the efficiency of the device.
    Type: Application
    Filed: July 29, 2020
    Publication date: September 22, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Ehsanollah FATHI, Hossein Zamani SIBONI
  • Publication number: 20220271191
    Abstract: Devices and methods for patterning the vertical solid state devices are provided. In some examples, a method of fabricating micro devices comprising forming device layers on a substrate, forming a first masking layer on a top layer of the device layers, forming a second masking layer on the first masking layer; and etching the device layers using the first and second masking layers to pattern the device layers.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 25, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza CHAJI, Lauren LESERGENT, Ehsanollah FATHI, Aaron Daniel Trent WIERSMA
  • Publication number: 20220254745
    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: April 27, 2022
    Publication date: August 11, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20220216195
    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: March 25, 2022
    Publication date: July 7, 2022
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Publication number: 20210327739
    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: July 1, 2021
    Publication date: October 21, 2021
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20210327740
    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: July 1, 2021
    Publication date: October 21, 2021
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20210242287
    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 31, 2021
    Publication date: August 5, 2021
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Publication number: 20210202572
    Abstract: Post-processing steps for integrating of micro devices into system (receiver) substrate or improving the performance of the micro devices after transfer. Post processing steps for additional structures such as reflective layers, fillers, black matrix or other layers may be used to improve the out coupling or confining of the generated LED light. Dielectric and metallic layers may be used to integrate an electro-optical thin film device into the system substrate with transferred micro devices. Color conversion layers may be integrated into the system substrate to create different outputs from the micro devices.
    Type: Application
    Filed: March 12, 2021
    Publication date: July 1, 2021
    Applicant: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Patent number: 10998352
    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: August 15, 2019
    Date of Patent: May 4, 2021
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi
  • Patent number: 10978530
    Abstract: A method of manufacturing a pixelated structure may be provided. The method may comprising 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: August 15, 2019
    Date of Patent: April 13, 2021
    Assignee: VueReal Inc.
    Inventors: Gholamreza Chaji, Ehsanollah Fathi