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: 11886073
    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: Grant
    Filed: November 21, 2022
    Date of Patent: January 30, 2024
    Assignee: SHOEI CHEMICAL INC.
    Inventors: Ernest Chung-Wei Lee, Charles Hotz
  • Patent number: 11824146
    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 27, 2020
    Date of Patent: November 21, 2023
    Assignee: SHOEI CHEMICAL INC.
    Inventors: Shihai Kan, Jay Yamanaga, Charles Hotz, Jason Hartlove, Veeral Hardev, Jian Chen, Christian Ippen, Wenzhou Guo, Robert Wilson
  • Publication number: 20230161193
    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: November 21, 2022
    Publication date: May 25, 2023
    Applicant: Nanosys, Inc.
    Inventors: Ernest Chung-Wei LEE, Charles HOTZ
  • Patent number: 11584646
    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: Grant
    Filed: January 12, 2021
    Date of Patent: February 21, 2023
    Assignee: Nanosys, Inc.
    Inventors: Austin Smith, David Olmeijer, Jared Lynch, Minghu Tu, Charles Hotz
  • Patent number: 11506929
    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: Grant
    Filed: August 14, 2019
    Date of Patent: November 22, 2022
    Assignee: Nanosys, Inc.
    Inventors: Ernest Chung-Wei Lee, Charles Hotz
  • Publication number: 20220209199
    Abstract: Embodiments of a flexible electroluminescent (FEE) device are described. An FEE device includes a device stack with a quantum dot (QD) film configured to generate a first light having a first peak wavelength and a flexible substrate configured to support the device stack and emit a first portion of the first light. The FEE device further includes an encapsulation layer disposed on the device stack and an outcoupling layer disposed on the flexible substrate. The encapsulation layer can be configured to provide mechanical and environmental protection to the FEE device from moisture or oxygen. The outcoupling layer can be configured to prevent total internal reflection of a second portion of the first light within the flexible substrate and extract the second portion from the flexible substrate.
    Type: Application
    Filed: April 17, 2020
    Publication date: June 30, 2022
    Applicant: Nanosys, Inc.
    Inventors: Ruiqing MA, Jason HARTLOVE, Charles HOTZ
  • Publication number: 20220206341
    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 LCD module includes a nanostructure-based color conversion (NS-based CC) layer and a light extraction layer. The NS-based CC layer is configured to receive a primary light, from the light source, having a first peak wavelength and to convert a portion of the primary light to emit a first portion of a secondary light having a second peak wavelength. The second peak wavelength is different from the first peak wavelength. The light extraction layer is optically coupled to the NS-based CC layer and is configured to prevent total internal reflection of a second portion of the secondary light. The light extraction layer has patterned features with one or more dimension in nanometer scale.
    Type: Application
    Filed: May 7, 2020
    Publication date: June 30, 2022
    Applicant: Nanosys, Inc.
    Inventors: Ernest C. LEE, David OLMEIJER, Charles HOTZ, Ruiqing MA, Jason HARTLOVE
  • Patent number: 11360250
    Abstract: Disclosed are stable films comprising Ag, In, Ga, and S (AIGS) nanostructures, or more one metal alkoxides, one or more metal alkoxide hydrolysis products, one or more metal halides, one or more metal halide hydrolysis products, one or more organometallic compounds, or one or more organometallic hydrolysis products, or combinations thereof, and at least one ligand bound to the nanostructures. In some embodiments, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm. In some embodiments, the nanostructures have a photon conversion efficiency (PCE) of at least 30% after being stored for 24 hours under yellow light and air storage conditions.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: June 14, 2022
    Assignee: Nanosys, Inc.
    Inventors: Wenzhou Guo, Ravisubhash Tangirala, Chunming Wang, Charles Hotz, Alain Barron
  • Patent number: 11267980
    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: Grant
    Filed: October 24, 2018
    Date of Patent: March 8, 2022
    Assignee: Nanosys, Inc.
    Inventors: Ravisubhash Tangirala, Austin Smith, Charles Hotz
  • Patent number: 11053439
    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: Grant
    Filed: February 5, 2020
    Date of Patent: July 6, 2021
    Assignee: NANOSYS, INC.
    Inventors: John J. Curley, Alexander Tu, Wenzhou Guo, Chunming Wang, Christian Ippen, Charles Hotz
  • Patent number: 11041071
    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: Grant
    Filed: August 16, 2018
    Date of Patent: June 22, 2021
    Assignee: Nanosys, Inc.
    Inventors: Ravisubhash Tangirala, Shihai Kan, Jay Yamanaga, Charles Hotz, Donald Zehnder
  • Publication number: 20210130170
    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: January 12, 2021
    Publication date: May 6, 2021
    Applicant: Nanosys, Inc.
    Inventors: Austin SMITH, David OLMEIJER, Jared LYNCH, Minghu TU, Charles HOTZ
  • Patent number: 10985296
    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: November 27, 2019
    Date of Patent: April 20, 2021
    Assignee: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhuo Guo, Charles Hotz, Robert Wilson
  • Patent number: 10935842
    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: Grant
    Filed: August 22, 2018
    Date of Patent: March 2, 2021
    Assignee: Nanosys, Inc.
    Inventors: Ernest Lee, Charles Hotz, ZhongSheng Luo, Jason Hartlove, Shihai Kan, Jian Chen
  • Patent number: 10919770
    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: Grant
    Filed: June 22, 2018
    Date of Patent: February 16, 2021
    Assignee: Nanosys, Inc.
    Inventors: Austin Smith, David Olmeijer, Jared Lynch, Minghu Tu, Charles Hotz
  • Publication number: 20210043814
    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 27, 2020
    Publication date: February 11, 2021
    Applicant: Nanosys, Inc.
    Inventors: Shihai KAN, Jay YAMANAGA, Charles HOTZ, Jason HARTLOVE, Veeral HARDEV, Jian CHEN, Christian IPPEN, Wenzhou GUO, Robert WILSON
  • Publication number: 20210013371
    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: Application
    Filed: September 28, 2020
    Publication date: January 14, 2021
    Applicant: Nanosys, Inc.
    Inventors: Jesse MANDERS, Christian IPPEN, Donald ZEHNDER, Jonathan TRUSKIER, Charles HOTZ
  • 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