Patents by Inventor Ching-Shih Ma

Ching-Shih Ma 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: 8592234
    Abstract: A light emitting diode comprises a permanent substrate having a chip holding space formed on a first surface of the permanent substrate; an insulating layer and a metal layer sequentially formed on the first surface of the permanent substrate and the chip holding space, wherein the metal layer comprises a first area and a second area not being contacted to each other; a chip having a first surface attached on a bottom of the chip holding space, contacted to the first area of the metal layer; a filler structure filled between the chip holding space and the chip; and a first electrode formed on a second surface of the chip. The chip comprises a light-emitting region and an electrical connection between the first area of the metal layer and the light emitting region is realized by using a chip-bonding technology.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: November 26, 2013
    Assignee: Opto Tech Corporation
    Inventors: Chang-Da Tsai, Wei-Che Wu, Chia-Liang Hsu, Ching-Shih Ma
  • Publication number: 20120322180
    Abstract: A light emitting diode comprises a permanent substrate having a chip holding space formed on a first surface of the permanent substrate; an insulating layer and a metal layer sequentially formed on the first surface of the permanent substrate and the chip holding space, wherein the metal layer comprises a first area and a second area not being contacted to each other; a chip having a first surface attached on a bottom of the chip holding space, contacted to the first area of the metal layer; a filler structure filled between the chip holding space and the chip; and a first electrode formed on a second surface of the chip. The chip comprises a light-emitting region and an electrical connection between the first area of the metal layer and the light emitting region is realized by using a chip-bonding technology.
    Type: Application
    Filed: August 27, 2012
    Publication date: December 20, 2012
    Applicant: OPTO TECH CORPORATION
    Inventors: Chang-Da Tsai, Wei-Che Wu, Chia-Liang Hsu, Ching-Shih Ma
  • Patent number: 8283683
    Abstract: A light emitting diode chip includes a permanent substrate having a holding space formed on the permanent substrate; an insulating layer and a metal layer sequentially formed on the permanent substrate and the holding spacer; a die having a eutectic layer and a light-emitting region and bonded to the metal layer within the holding space via the eutectic layer coupling to the metal layer; a filler structure filled between the holding space and the die; and an electrode formed on the die and in contact with the light-emitting region.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: October 9, 2012
    Assignee: Opto Tech Corporation
    Inventors: Chang-Da Tsai, Wei-Che Wu, Chia-Liang Hsu, Ching-Shih Ma
  • Publication number: 20100072497
    Abstract: A light emitting diode chip includes a permanent substrate having a holding space formed on the permanent substrate; an insulating layer and a metal layer sequentially formed on the permanent substrate and the holding spacer; a die having a eutectic layer and a light-emitting region and bonded to the metal layer within the holding space via the eutectic layer coupling to the metal layer; a filler structure filled between the holding space and the die; and an electrode formed on the die and in contact with the light-emitting region.
    Type: Application
    Filed: December 1, 2009
    Publication date: March 25, 2010
    Applicant: OPTO TECH CORPORATION
    Inventors: Chang-Da Tsai, Wei-Che Wu, Chia-Liang Hsu, Ching-Shih Ma
  • Publication number: 20070290221
    Abstract: A light emitting diode includes a permanent substrate having a first portion and a second portion, and a chip attached on the first portion of the permanent substrate by a chip bonding technology. The chip includes at least one first electrode and a light emitting region. The manufacturing method comprises a step of mounting a single chip on the first portion of the permanent substrate by a chip bonding technology to overcome the fragility problem of an EPI-wafer.
    Type: Application
    Filed: May 15, 2007
    Publication date: December 20, 2007
    Applicant: OPTO TECH CORPORATION
    Inventors: Chang-Da Tsai, Ching-Shih Ma
  • Patent number: 6797988
    Abstract: The present invention discloses a light-emitting diode with enhanced light-emitting efficiency, in which the active current is prevented from flowing in the region under the top electrode so that the light-emitting efficiency as well as the brightness can be improved.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: September 28, 2004
    Assignee: Opto Tech Corporation
    Inventors: Ming-Der Lin, Jung-Kuei Hsu, San-Bao Lin, Ching-Shih Ma
  • Publication number: 20030222269
    Abstract: The present invention discloses a light-emitting diode with enhanced light-emitting efficiency, in which the active current is prevented from flowing in the region under the top electrode so that the light-emitting efficiency as well as the brightness can be improved.
    Type: Application
    Filed: April 24, 2003
    Publication date: December 4, 2003
    Inventors: Ming-Der Lin, Jung-Kuei Hsu, San-Bao Lin, Ching-Shih Ma