Patents by Inventor Clayton Ka Tsun Chan

Clayton Ka Tsun Chan 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: 20220013688
    Abstract: Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
    Type: Application
    Filed: July 29, 2021
    Publication date: January 13, 2022
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
  • Patent number: 11101405
    Abstract: Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: August 24, 2021
    Assignee: Apple Inc.
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
  • Publication number: 20200251614
    Abstract: Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
    Type: Application
    Filed: February 6, 2020
    Publication date: August 6, 2020
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
  • Patent number: 10593832
    Abstract: Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: March 17, 2020
    Assignee: Apple Inc.
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
  • Patent number: 9966260
    Abstract: Laser lift-off methods are described in which optical flatness is provided on the back side of a temporary substrate using either an optical layer or optical liquid. A laser is directed through the optical layer or optical liquid and a back side of the temporary substrate to decompose a portion of a process layer supported on a front side of the temporary substrate, followed by separation of the process layer and the temporary substrate.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: May 8, 2018
    Assignee: APPLE INC.
    Inventors: Clayton Ka Tsun Chan, Ion Bita, Ranjith Samuel E. John, Alfred F. Renaldo, Jie Fu, Sudirukkuge T. Jinasundera, An-Chun Tien
  • Patent number: 9583466
    Abstract: A method and structure for forming an array of LED devices is disclosed. The LED devices in accordance with embodiments of the invention may include a confined current injection area in which a current spreading layer protrudes away from a cladding layer in a pillar configuration so that the cladding layer is wider than the current spreading layer pillar.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: February 28, 2017
    Assignee: Apple Inc.
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan
  • Publication number: 20160336484
    Abstract: Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
    Type: Application
    Filed: July 29, 2016
    Publication date: November 17, 2016
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
  • Patent number: 9450147
    Abstract: Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: September 20, 2016
    Assignee: Apple Inc.
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
  • Publication number: 20160181476
    Abstract: LEDs and an electronic device are disclosed. In an embodiment an LED includes a p-n diode and a dielectric mirror spanning along a lateral sidewall of the p-n diode and directly underneath the p-n diode. An opening is formed in the dielectric mirror directly underneath the p-n diode, and a bottom conductive contact is on the dielectric mirror directly underneath the p-n diode and within the opening in the dielectric mirror.
    Type: Application
    Filed: July 20, 2015
    Publication date: June 23, 2016
    Inventors: Kevin K. C. Chang, Hsin-Hua Hu, Clayton Ka Tsun Chan, Chien-Hsing Huang
  • Patent number: 9153548
    Abstract: A method and structure for forming an array of micro devices is disclosed. An array of micro devices is formed over an array of stabilization posts included in a stabilization layer. Patterned sacrificial spacers are formed between the stabilization posts and between the micro devices. The patterned sacrificial spacers are disposed upon the patterned sacrificial spacers.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: October 6, 2015
    Assignee: Lux Vue Technology Corporation
    Inventors: Clayton Ka Tsun Chan, Andreas Bibl
  • Patent number: 9121979
    Abstract: Illumination devices and methods of making same are disclosed. In one embodiment, a display device includes a light modulating array and a light guide configured to receive light into at least one edge of the light guide. The light guide can be characterized by a first refractive index. The display device can also include a light turning layer disposed such that the light guide is at least partially between the turning layer and the array. The turning layer can comprise an inorganic material characterized by a second refractive index that is substantially the same as the first refractive index.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: September 1, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Ion Bita, Sapna Patel, Clayton Ka Tsun Chan, SuryaPrakash Ganti, Brian W. Arbuckle
  • Patent number: 9087764
    Abstract: A method and structure for forming an array of micro devices is disclosed. An array of micro devices is formed over an array of stabilization posts included in a stabilization layer. The stabilization layer is bonded to a spacer side of a carrier substrate. The spacer side of the carrier substrate includes raised spacers extending from a spacer-side surface of the carrier substrate.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: July 21, 2015
    Assignee: Luxvue Technology Corporation
    Inventors: Clayton Ka Tsun Chan, Andreas Bibl
  • Publication number: 20150187991
    Abstract: Methods and structures for forming arrays of LED devices are disclosed. The LED devices in accordance with embodiments of the invention may include an internally confined current injection area to reduce non-radiative recombination due to edge effects. Several manners for confining current may include etch removal of a current distribution layer, etch removal of a current distribution layer and active layer followed by mesa re-growth, isolation by ion implant or diffusion, quantum well intermixing, and oxide isolation.
    Type: Application
    Filed: February 28, 2014
    Publication date: July 2, 2015
    Applicant: LuxVue Technology Corporation
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan, Daniel Arthur Haeger
  • Publication number: 20150187740
    Abstract: A method and structure for forming an array of LED devices is disclosed. The LED devices in accordance with embodiments of the invention may include a confined current injection area in which a current spreading layer protrudes away from a cladding layer in a pillar configuration so that the cladding layer is wider than the current spreading layer pillar.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 2, 2015
    Applicant: LuxVue Technology Corporation
    Inventors: Kelly McGroddy, Hsin-Hua Hu, Andreas Bibl, Clayton Ka Tsun Chan
  • Publication number: 20150076528
    Abstract: A method and structure for forming an array of micro devices is disclosed. An array of micro devices is formed over an array of stabilization posts included in a stabilization layer. Patterned sacrificial spacers are formed between the stabilization posts and between the micro devices. The patterned sacrificial spacers are disposed upon the patterned sacrificial spacers.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Applicant: LuxVue Technology Corporation
    Inventors: Clayton Ka Tsun Chan, Andreas Bibl
  • Patent number: 8979349
    Abstract: Illumination devices and methods of making same are disclosed. In one embodiment, an illumination apparatus includes a light source, a light guide having a planar first surface, a first end and a second end, and a length therebetween, the light guide positioned to receive light from the light source into the light guide first end, and the light guide configured such that light from the light source provided into the first end of the light guide propagates towards the second end, and a plurality of light turning features that are configured to reflect light propagating towards the second end of the light guide out of the planar first surface of the light guide, each light turning feature having a turning surface and an interferometric stack formed on the turning surface.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 17, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Ion Bita, Sapna Patel, Clayton Ka Tsun Chan, SuryaPrakash Ganti, Brian W. Arbuckle
  • Publication number: 20150028362
    Abstract: A method and structure for forming an array of micro devices is disclosed. An array of micro devices is formed over an array of stabilization posts included in a stabilization layer. The stabilization layer is bonded to a spacer side of a carrier substrate. The spacer side of the carrier substrate includes raised spacers extending from a spacer-side surface of the carrier substrate.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: LuxVue Technology Corporation
    Inventors: Clayton Ka Tsun Chan, Andreas Bibl
  • Patent number: 8325409
    Abstract: Methods and devices are provided for selectively allowing light to pass through a substantially transparent substrate or blocking the light, at least to some degree. Some embodiments provide a plurality of reflective vanes that can be positioned in at least two positions. According to some such implementations, when the vanes are in an open position, incident light is allowed to pass through the window. The light may reflect from two or more vanes before passing through the window. When a sufficient voltage is applied between vane electrodes and other electrodes, the vanes are pulled down, reflecting back at least some of the incident light. The voltage may be controlled according to detected temperature, ambient light intensity, etc.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: December 4, 2012
    Assignee: Qualcomm MEMS Technologies, Inc.
    Inventors: Srinivasan Sethuraman, Clayton Ka Tsun Chan
  • Publication number: 20100313476
    Abstract: Methods and devices are provided for selectively allowing light to pass through a substantially transparent substrate or blocking the light, at least to some degree. Some embodiments provide a plurality of reflective vanes that can be positioned in at least two positions. According to some such implementations, when the vanes are in an open position, incident light is allowed to pass through the window. The light may reflect from two or more vanes before passing through the window. When a sufficient voltage is applied between vane electrodes and other electrodes, the vanes are pulled down, reflecting back at least some of the incident light. The voltage may be controlled according to detected temperature, ambient light intensity, etc.
    Type: Application
    Filed: June 15, 2009
    Publication date: December 16, 2010
    Inventors: Srinivasan Sethuraman, Clayton Ka Tsun Chan
  • Publication number: 20100302803
    Abstract: Illumination devices and methods of making same are disclosed. In one embodiment, an illumination apparatus includes a light source, a light guide having a planar first surface, a first end and a second end, and a length therebetween, the light guide positioned to receive light from the light source into the light guide first end, and the light guide configured such that light from the light source provided into the first end of the light guide propagates towards the second end, and a plurality of light turning features that are configured to reflect light propagating towards the second end of the light guide out of the planar first surface of the light guide, each light turning feature having a turning surface and an interferometric stack formed on the turning surface.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 2, 2010
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventors: Ion Bita, Sapna Patel, Clayton Ka Tsun Chan, SuryaPrakash Ganti, Brian W. Arbuckle