Patents by Inventor Charles Hotz

Charles Hotz 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).

  • Patent number: 10854798
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: December 1, 2020
    Assignee: Nanosys, Inc.
    Inventors: Shihai Kan, Jay Yamanaga, Charles Hotz, Jason Hartlove, Veeral Hardev, Jian Chen, Christian Ippen, Wenzhou Guo, Robert Wilson
  • Publication number: 20200347254
    Abstract: The present invention provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise a population of nanostructures comprising polyfunctional poly(alkylene oxide) ligands. The present invention also provides nanostructure films comprising the nanostructure compositions and methods of making nanostructure films using the nanostructure compositions.
    Type: Application
    Filed: October 24, 2018
    Publication date: November 5, 2020
    Applicant: Nanosys, Inc.
    Inventors: Ravisubhash TANGIRALA, Austin SMITH, Charles HOTZ
  • Publication number: 20200325396
    Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides methods of preparing nanostructures using in situ prepared zinc dioleate and/or a metal halide. The nanostructures have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are nanostructures prepared using the methods. And, nanostructure films and molded articles comprising the nanostructures are also provided.
    Type: Application
    Filed: April 14, 2020
    Publication date: October 15, 2020
    Applicant: Nanosys, Inc.
    Inventors: Yeewah Annie CHOW, Jason HARTLOVE, Charles HOTZ, Chunming WANG, Wenzhou GUO, Ilan JEN-LA PLANTE, Jason Travis TILLMAN, John J. CURLEY, Christian IPPEN, Alexander TU, Ke GONG, Minghu TU
  • Publication number: 20200325395
    Abstract: The invention relates to highly luminescent nanostructures with strong blue light absorbance, particularly core/shell nanostructures comprising an In(1-x)GaxP core and ZnSe and/or ZnS shell layers, wherein 0<x<1. The invention also relates to methods of producing such nanostructures.
    Type: Application
    Filed: February 5, 2020
    Publication date: October 15, 2020
    Applicant: NANOSYS, INC.
    Inventors: John J. CURLEY, Alexander TU, Wenzhou GUO, Chunming WANG, Christian IPPEN, Charles HOTZ
  • Patent number: 10790411
    Abstract: Embodiments of the present application relate to the use of quantum dots mixed with spacer particles. An illumination device includes a first conductive layer, a second conductive layer, and an active layer disposed between the first conductive layer and the second conductive layer. The active layer includes a plurality of quantum dots that emit light when an electric field is generated between the first and second conductive layers. The quantum dots are interspersed with spacer particles that do not emit light when the electric field is generated between the first and second conductive layers.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 29, 2020
    Assignee: Nanosys, Inc.
    Inventors: Jesse Manders, Christian Ippen, Donald Zehnder, Jonathan Truskier, Charles Hotz
  • Publication number: 20200098951
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Applicant: Nanosys, Inc.
    Inventors: Jason HARTLOVE, Veeral HARDEV, Shihai KAN, Jian CHEN, Jay YAMANAGA, Christian IPPEN, Wenzhuo GUO, Charles HOTZ, Robert WILSON
  • Publication number: 20200057338
    Abstract: Embodiments of a display device are described. A display device includes a backlight unit having a light source and a liquid crystal display (LCD) module. The light source is configured to emit a primary light having a first peak wavelength. The LCD module includes a first sub-pixel having a phosphor film and a second sub-pixel having a non-phosphor film. The phosphor film is configured to receive a first portion of the primary light and to convert the first portion of the primary light to emit a secondary light having a second peak wavelength that is different from the first peak wavelength. The non-phosphor film is configured to receive a second portion of the primary light and to optically modify the second portion of the primary light to emit an optically modified primary light having a third peak wavelength that is different from the first and second peak wavelengths.
    Type: Application
    Filed: August 14, 2019
    Publication date: February 20, 2020
    Applicant: Nanosys, Inc.
    Inventors: Ernest Chung-Wei LEE, Charles Hotz
  • Publication number: 20200035881
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Application
    Filed: October 1, 2019
    Publication date: January 30, 2020
    Applicant: Nanosys, Inc.
    Inventors: Shihai KAN, Jay YAMANAGA, Charles HOTZ, Jason HARTLOVE, Veeral HARDEV, Jian CHEN, Christian IPPEN, Wenzhou GUO, Robert WILSON
  • Patent number: 10497841
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: December 3, 2019
    Assignee: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhou Guo, Charles Hotz, Robert Wilson
  • Patent number: 10475971
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: November 12, 2019
    Assignee: Nanosys, Inc.
    Inventors: Shihai Kan, Jay Yamanaga, Charles Hotz, Jason Hartlove, Veeral Hardev, Jian Chen, Christian Ippen, Wenzhuo Guo, Robert Wilson
  • Patent number: 10316250
    Abstract: Highly luminescent nanostructures, particularly highly luminescent quantum dots, comprising a nanocrystal core are provided. Also provided are methods of increasing the sphericity of nanostructures comprising subjecting nanocrystal cores to an acid etch step, an annealing step, or a combination of an acid etch step and an annealing step.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: June 11, 2019
    Assignee: Nanosys, Inc.
    Inventors: Wenzhou Guo, Christian Ippen, Charles Hotz, Rose Beeler, Jared Lynch, Shihai Kan, Jonathan Truskier, Minghu Tu
  • Patent number: 10243114
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: March 26, 2019
    Assignee: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhuo Guo, Charles Hotz, Robert Wilson
  • Publication number: 20190088830
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Application
    Filed: October 31, 2018
    Publication date: March 21, 2019
    Applicant: Nanosys, Inc.
    Inventors: Jason HARTLOVE, Veeral HARDEV, Shihai KAN, Jian CHEN, Jay YAMANAGA, Christian IPPEN, Wenzhou GUO, Charles HOTZ, Robert WILSON
  • Publication number: 20190077954
    Abstract: The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one poly(alkylene oxide) ligand bound to the surface of the nanostructures, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.
    Type: Application
    Filed: August 16, 2018
    Publication date: March 14, 2019
    Applicant: Nanosys, Inc.
    Inventors: Ravisubhash Tangirala, Shihai Kan, Jay Yamanaga, Charles Hotz, Donald Zehnder
  • Publication number: 20190064592
    Abstract: A display device includes a backlight unit having a light source and a liquid crystal display (LCD) module. The light source is configured to emit a primary light in a first wavelength region. The LCD module includes a pixel having a first, second, and third sub-pixels. The first sub-pixel includes a first emissive surface configured to emit a first light in a second wavelength region. The second sub-pixel includes a second emissive surface configured to emit a second light in a third wavelength region. The third sub-pixel includes a third emissive surface configured to emit a third light in the first wavelength region. The third luminance is greater than the first luminance and the second luminance. An area of the third emissive surface is smaller than an area of the first emissive surface and an area of the second emissive surface.
    Type: Application
    Filed: August 22, 2018
    Publication date: February 28, 2019
    Applicant: Nanosys, Inc.
    Inventors: Ernest LEE, Charles HOTZ, ZhongSheng LUO, Jason HARTLOVE, Shihai KAN, Jian CHEN
  • Publication number: 20180370800
    Abstract: The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one reactive diluent, at least one anaerobic stabilizer, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 27, 2018
    Applicant: Nanosys, Inc.
    Inventors: Austin SMITH, David OLMEIJER, Jared LYNCH, Minghu TU, Charles HOTZ
  • Publication number: 20180331262
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 15, 2018
    Applicant: Nanosys, Inc.
    Inventors: Shihai KAN, Jay YAMANAGA, Charles HOTZ, Jason HARTLOVE, Veeral HARDEV, Jian CHEN, Christian IPPEN, Wenzhuo GUO, Robert WILSON
  • Patent number: 10128417
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: November 13, 2018
    Assignee: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhuo Guo, Charles Hotz, Robert Wilson
  • Patent number: 10056533
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: August 21, 2018
    Assignee: NANOSYS, INC.
    Inventors: Shihai Kan, Jay Yamanaga, Charles Hotz, Jason Hartlove, Veeral Hardev, Jian Chen, Christian Ippen, Wenzhuo Guo, Robert Wilson
  • Publication number: 20180198035
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 12, 2018
    Applicant: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhuo Guo, Charles Hotz, Robert Wilson