Patents by Inventor Yu-Chen Shen

Yu-Chen Shen 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: 11942507
    Abstract: Described are light emitting diode (LED) devices comprising a plurality of mesas defining pixels, each of the plurality of mesas comprising semiconductor layers, an N-contact material in a space between each of the plurality of mesas, a dielectric material which insulates sidewalls of the P-type layer and the active region from the metal. Each of the mesas is spaced so that there is a pixel pitch in a range of from 10 ?m to 100 ?m and dark space gap between adjacent edges of p-contact layer. The dark space gap may be less than 20% of the pixel pitch. The dark space gap may be in a range of from 4 ?m to 10 ?m.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: March 26, 2024
    Assignee: Lumileds LLC
    Inventors: Erik William Young, Dennis Scott, Rajat Sharma, Toni Lopez, Yu-Chen Shen
  • Patent number: 11923482
    Abstract: A light emitting device and method of forming a light emitting device are disclosed. The light emitting device includes a light emitting diode and a phosphor layer formed on the light emitting diode, the phosphor layer including a plurality of phosphor particles formed in a particle layer, the particle layer including interstices between the phosphor particles, and a matrix material disposed in a portion of the interstices. A plurality of cavities may be disposed in a remaining portion of the interstices.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: March 5, 2024
    Assignee: Lumileds LLC
    Inventors: Joerg Feldmann, Marcel Rene Bohmer, Marinus Johannes Petrus Maria van Gerwen, Yu-Chen Shen
  • Patent number: 11916471
    Abstract: An example electronic device includes a controller to determine a user touch detection by a power adaptor coupled to the electronic device to operate the electronic device in an AC power mode. The power adaptor may comprise a proximity sensor to detect a user touch for detachment of the power adaptor from the electronic device, and a control circuit to operate a configuration pin in a low output mode to signal user touch detection. The controller may initiate central processing unit (CPU) throttling to reduce power consumption by the electronic device. The controller may further stop CPU throttling in response to detecting that the power adaptor has been detached from the electronic device. Further, the controller may switch the electronic device to a DC power mode to operate using DC power supplied by a battery of the electronic device in response to power adaptor detachment.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 27, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ting-Yang Tsai, Yi-Chen Chen, Ching-Lung Wang, Yu-Min Shen
  • Patent number: 11817532
    Abstract: A device may include a wavelength converting layer on an epitaxial layer. The wavelength converting layer may include a first surface having a width that is equal to a width of the epitaxial layer, a second surface having a width that is less than the width of the first surface, and angled sidewalls. A conformal non-emission layer may be formed on the angled sidewalls and sidewalls of the epitaxial layer, such that the second surface of the wavelength converting layer is exposed.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: November 14, 2023
    Assignee: Lumileds LLC
    Inventors: Yu-Chen Shen, Luke Gordon, Amil Ashok Patel
  • Patent number: 11784286
    Abstract: Described are light emitting diode (LED) devices comprising a plurality of mesas defining pixels, each of the mesas comprising semiconductor layers, an N-contact material in a space between each of the plurality of mesas, a dielectric material which insulates sidewalls of the P-type layer and the active region from the metal. A hard mask layer is above the semiconductor layers, the hard mask layer having a plurality of openings therein, each partially filled with a liner layer and partially filled with a P-metal material plug, the P-metal material plug having a width; and a passivation film is on the hard mask layer, the passivation film having a plurality of passivation film openings therein defining a width, the width of each passivation film opening being less than the width of a combination of the P-metal material plug and the liner layer.
    Type: Grant
    Filed: December 7, 2022
    Date of Patent: October 10, 2023
    Assignee: Lumileds LLC
    Inventors: Erik William Young, Yu-Chen Shen, Chee Yin Foo, Yeow Meng Teo
  • Patent number: 11749790
    Abstract: A device may include a substrate having a first embedded transistor in a first region and a second embedded transistor in a second region. The first region and the second region may be separated by trench extending through at least a portion of an epitaxial layer formed on the substrate. The first embedded transistor may be connected to a first light emitting diode (LED) and the second embedded transistor may be connected to a second LED. A first optical isolation layer may be between the epitaxial layer and the first region of the substrate. A second optical isolation layer may be between the epitaxial layer and the second region of the substrate.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: September 5, 2023
    Assignee: Lumileds LLC
    Inventors: Ashish Tandon, Luke Gordon, Yu-Chen Shen
  • Publication number: 20230197877
    Abstract: Solar cells having emitter regions composed of wide bandgap semiconductor material are described. In an example, a method includes forming, in a process tool having a controlled atmosphere, a thin dielectric layer on a surface of a semiconductor substrate of the solar cell. The semiconductor substrate has a bandgap. Without removing the semiconductor substrate from the controlled atmosphere of the process tool, a semiconductor layer is formed on the thin dielectric layer. The semiconductor layer has a bandgap at least approximately 0.2 electron Volts (eV) above the bandgap of the semiconductor substrate.
    Type: Application
    Filed: February 9, 2023
    Publication date: June 22, 2023
    Inventors: Richard M. Swanson, Marius M. Bunea, Michael C. Johnson, David D. Smith, Yu-Chen Shen, Peter J. Cousins, Tim Dennis
  • Publication number: 20230170452
    Abstract: A light-emitting diode (LED) die can include a p-n junction between a p-doped semiconductor material and an n-doped semiconductor material. The LED die can include vias that can electrically power the p-n junction. The vias can optionally be electrically connected in parallel to one another. A controller can supply current to the vias to electrically power the LED die. The vias can be distributed with a density that peaks at or near a center of the LED die and decreases with increasing distances away from the peak of the density, such that when the vias are electrically powered, the LED die emits light with a surface luminance that peaks at or near the center of the LED die and decreases with increasing distances away from the peak of the surface luminance.
    Type: Application
    Filed: November 17, 2022
    Publication date: June 1, 2023
    Inventors: Yu-Chen Shen, Jeffrey Vincent DiMaria, Florent Gregoire Monestier, Antonio Lopez Julia
  • Publication number: 20230154970
    Abstract: A device may include a metal contact between a first isolation region and a second isolation region on a first surface of an epitaxial layer. The device may include a first sidewall and a second sidewall on a second surface of the epitaxial layer distal to the first isolation region and the second isolation region. The device may include a wavelength converting layer on the epitaxial layer between the first sidewall and the second sidewall.
    Type: Application
    Filed: January 19, 2023
    Publication date: May 18, 2023
    Applicant: Lumileds LLC
    Inventors: Ashish Tandon, Rajat Sharma, Joseph Flemish, Andrei Papou, Wen Yu, Erik William Young, Yu-Chen Shen, Luke Gordon
  • Patent number: 11652134
    Abstract: A first component with a first sidewall and a second component with a second sidewall may be mounted onto an expandable film such that an original distance X is the distance between the first sidewall and the second sidewall. The expandable film may be expanded such that an expanded distance Y is the distance between the first sidewall and the second sidewall and expanded distance Y is greater than original distance X. A first sidewall material may be applied within at least a part of a space between the first sidewall and the second sidewall. The expandable film may be expanded such that a contracted distance Z is the distance between the first sidewall and the second sidewall, and contracted distance Z is less than expanded distance Y.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: May 16, 2023
    Assignee: Lumileds LLC
    Inventors: Tze Yang Hin, Yu-Chen Shen, Luke Gordon, Danielle Russell Chamberlin, Daniel Bernardo Roitman
  • Publication number: 20230104020
    Abstract: Described are light emitting diode (LED) devices comprising a plurality of mesas defining pixels, each of the mesas comprising semiconductor layers, an N-contact material in a space between each of the plurality of mesas, a dielectric material which insulates sidewalls of the P-type layer and the active region from the metal. A hard mask layer is above the semiconductor layers, the hard mask layer having a plurality of openings therein, each partially filled with a liner layer and partially filled with a P-metal material plug, the P-metal material plug having a width; and a passivation film is on the hard mask layer, the passivation film having a plurality of passivation film openings therein defining a width, the width of each passivation film opening being less than the width of a combination of the P-metal material plug and the liner layer.
    Type: Application
    Filed: December 7, 2022
    Publication date: April 6, 2023
    Applicant: Lumileds LLC
    Inventors: Erik William Young, Yu-Chen Shen, Chee Yin Foo, Yeow Meng Teo
  • Patent number: 11605750
    Abstract: Solar cells having emitter regions composed of wide bandgap semiconductor material are described. In an example, a method includes forming, in a process tool having a controlled atmosphere, a thin dielectric layer on a surface of a semiconductor substrate of the solar cell. The semiconductor substrate has a bandgap. Without removing the semiconductor substrate from the controlled atmosphere of the process tool, a semiconductor layer is formed on the thin dielectric layer. The semiconductor layer has a bandgap at least approximately 0.2 electron Volts (eV) above the bandgap of the semiconductor substrate.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: March 14, 2023
    Assignee: SunPower Corporation
    Inventors: Richard M. Swanson, Marius M. Bunea, Michael C. Johnson, David D. Smith, Yu-Chen Shen, Peter J. Cousins, Tim Dennis
  • Patent number: 11569415
    Abstract: Described are light emitting diode (LED) devices comprising a plurality of mesas defining pixels, each of the mesas comprising semiconductor layers, an N-contact material in a space between each of the plurality of mesas, a dielectric material which insulates sidewalls of the P-type layer and the active region from the metal. A hard mask layer is above the semiconductor layers, the hard mask layer having a plurality of openings therein, each partially filled with a liner layer and partially filled with a P-metal material plug, the P-metal material plug having a width; and a passivation film is on the hard mask layer, the passivation film having a plurality of passivation film openings therein defining a width, the width of each passivation film opening being less than the width of a combination of the P-metal material plug and the liner layer.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: January 31, 2023
    Assignee: Lumileds LLC
    Inventors: Erik William Young, Yu-Chen Shen, Chee Yin Foo, Yeow Meng Teo
  • Publication number: 20220359799
    Abstract: A wavelength converting layer is partially diced to generate a first and second wavelength converting layer segment and to allow partial isolation between the first segment and the second segment such that the wavelength converting layer segments are connected by a connecting wavelength converting layer. The first and second wavelength converting layer segments are attached to a first and second light emitting device, respectively to create a first and second pixel. The connecting wavelength converting layer segment is removed to allow complete isolation between the first pixel and the second pixel. An optical isolation material is applied to exposed surfaces of the first and second pixel and a sacrificial portion of the wavelength converting layer segments and optical isolation material attached to the sacrificial portion is removed from a surface facing away from the first light emitting device, to expose a emitting surface of the first wavelength converting layer segment.
    Type: Application
    Filed: July 26, 2022
    Publication date: November 10, 2022
    Applicant: Lumileds LLC
    Inventors: Kentaro SHIMIZU, Hisashi MASUI, Yu-Chen SHEN, Danielle Russell CHAMBERLIN, Peter Josef SCHMIDT
  • Publication number: 20220293801
    Abstract: Methods of fabricating solar cells using UV-curing of light-receiving surfaces of the solar cells, and the resulting solar cells, are described herein. In an example, a method of fabricating a solar cell includes forming a passivating dielectric layer on a light-receiving surface of a silicon substrate. The method also includes forming an anti-reflective coating (ARC) layer below the passivating dielectric layer. The method also includes exposing the ARC layer to ultra-violet (UV) radiation. The method also includes, subsequent to exposing the ARC layer to ultra-violet (UV) radiation, thermally annealing the ARC layer.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Inventors: Yu-Chen Shen, Perine Jaffrennou, Gilles Olav Tanguy Sylvain Poulain, Michael C. Johnson, Seung Bum Rim
  • Publication number: 20220293675
    Abstract: A first component with a first sidewall and a second component with a second sidewall may be mounted onto an expandable film such that an original distance X is the distance between the first sidewall and the second sidewall. The expandable film may be expanded such that an expanded distance Y is the distance between the first sidewall and the second sidewall and expanded distance Y is greater than original distance X. A first sidewall material may be applied within at least a part of a space between the first sidewall and the second sidewall. The expandable film may be expanded such that a contracted distance Z is the distance between the first sidewall and the second sidewall, and contracted distance Z is less than expanded distance Y.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 15, 2022
    Applicant: LUMILEDS LLC
    Inventors: Tze Yang HIN, Yu-Chen SHEN, Luke GORDON, Danielle Russell CHAMBERLIN, Daniel Bernardo ROITMAN
  • Publication number: 20220285425
    Abstract: Described are light emitting diode (LED) devices comprising a plurality of mesas defining pixels, each of the plurality of mesas comprising semiconductor layers, an N-contact material in a space between each of the plurality of mesas, a dielectric material which insulates sidewalls of the P-type layer and the active region from the metal. Each of the mesas is spaced so that there is a pixel pitch in a range of from 10 ?m to 100 ?m and dark space gap between adjacent edges of p-contact layer. The dark space gap may be less than 20% of the pixel pitch. The dark space gap may be in a range of from 4 ?m to 10 ?m.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 8, 2022
    Applicant: Lumileds LLC
    Inventors: Erik William Young, Dennis Scott, Rajat Sharma, Toni Lopez, Yu-Chen Shen
  • Patent number: 11411147
    Abstract: A wavelength converting layer is partially diced to generate a first and second wavelength converting layer segment and to allow partial isolation between the first segment and the second segment such that the wavelength converting layer segments are connected by a connecting wavelength converting layer. The first and second wavelength converting layer segments are attached to a first and second light emitting device, respectively to create a first and second pixel. The connecting wavelength converting layer segment is removed to allow complete isolation between the first pixel and the second pixel. An optical isolation material is applied to exposed surfaces of the first and second pixel and a sacrificial portion of the wavelength converting layer segments and optical isolation material attached to the sacrificial portion is removed from a surface facing away from the first light emitting device, to expose a emitting surface of the first wavelength converting layer segment.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 9, 2022
    Assignee: Lumileds LLC
    Inventors: Kentaro Shimizu, Hisashi Masui, Yu-Chen Shen, Danielle Russell Chamberlin, Peter Josef Schmidt
  • Publication number: 20220223766
    Abstract: A device may include a wavelength converting layer on an epitaxial layer. The wavelength converting layer may include a first surface having a width that is equal to a width of the epitaxial layer, a second surface having a width that is less than the width of the first surface, and angled sidewalls. A conformal non-emission layer may be formed on the angled sidewalls and sidewalls of the epitaxial layer, such that the second surface of the wavelength converting layer is exposed.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Applicant: LUMILEDS LLC
    Inventors: Yu-Chen SHEN, Luke GORDON, Amil Ashok PATEL
  • Patent number: 11374145
    Abstract: Methods of fabricating solar cells using UV-curing of light-receiving surfaces of the solar cells, and the resulting solar cells, are described herein. In an example, a method of fabricating a solar cell includes forming a passivating dielectric layer on a light-receiving surface of a silicon substrate. The method also includes forming an anti-reflective coating (ARC) layer below the passivating dielectric layer. The method also includes exposing the ARC layer to ultra-violet (UV) radiation. The method also includes, subsequent to exposing the ARC layer to ultra-violet (UV) radiation, thermally annealing the ARC layer.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 28, 2022
    Assignees: SunPower Corporation, Total Marketing Services
    Inventors: Yu-Chen Shen, PĂ©rine Jaffrennou, Gilles Olav Tanguy Sylvain Poulain, Michael C. Johnson, Seung Bum Rim