Patents by Inventor Myong Soo Cho

Myong Soo Cho 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: 20100171140
    Abstract: There is provided a semiconductor light emitting device that minimizes reflection or absorption of emitted light, maximizes luminous efficiency with the maximum light emitting area, enables uniform current spreading with a small area electrode, and enables mass production with high reliability and high quality. A semiconductor light emitting device according to an aspect of the invention includes first and second conductivity type semiconductor layers, an active layer formed therebetween, first electrode layer, and a second electrode part electrically connecting the semiconductor layers. The second electrode part includes an electrode pad unit, an electrode extending unit, and an electrode connecting unit connecting the electrode pad unit and electrode extending unit.
    Type: Application
    Filed: March 22, 2010
    Publication date: July 8, 2010
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Pun Jae CHOI, Ki Yeol Park, Sang Bum Lee, Seon Young Myoung, Myong Soo Cho
  • Publication number: 20100109035
    Abstract: The present invention provides a compound semiconductor light emitting device including: an Si—Al substrate; protection layers formed on top and bottom surfaces of the Si—Al substrate; and a p-type semiconductor layer, an active layer, and an n-type semiconductor layer which are sequentially stacked on the protection layer formed on the top surface of the Si—Al substrate, and a method for manufacturing the same.
    Type: Application
    Filed: April 3, 2009
    Publication date: May 6, 2010
    Inventors: Myong Soo CHO, Ki Yeol PARK, Pun Jae Choi
  • Publication number: 20100109026
    Abstract: Provided are a light emitting device and a method of manufacturing the same. The light emitting device includes each of first and second semiconductor stacked structures including first and second conductive type semiconductor layers and an active layer, first and second contacts on tops and bottoms of the first and second semiconductor stacked structures to be connected to the first and second conductive type semiconductor layers, a substrate structure including first and second sides, a first insulation layer on an area where no second contact is formed among a surface of the first and second semiconductor stacked layers, first and second conductive layers connected to the second contacts of the first and second semiconductor stacked structures, first and second wiring layers on the first side of the substrate structure, and first and second external connection terminals connected to the first and second contacts of the first semiconductor stacked structure.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Inventors: Grigory ONUSHKIN, Jin Hyun Lee, Myong Soo Cho, Pun Jae Choi
  • Patent number: 7704771
    Abstract: A light emitting device including: at least one light emitting stack including first and second conductivity type semiconductor layers and an active layer disposed there between, the light emitting stack having first and second surfaces and side surfaces interposed between the first and second surfaces; first and second contacts formed on the first and second surface of the light emitting stack, respectively; a first insulating layer formed on the second surface and the side surfaces of the light emitting stack; a conductive layer connected to the second contact and extended along one of the side surfaces of the light emitting stack to have an extension portion adjacent to the first surface; and a substrate structure formed to surround the side surfaces and the second surface of the light emitting stack.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: April 27, 2010
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Grigory Onushkin, Jin Hyun Lee, Myong Soo Cho, Pun Jae Choi
  • Publication number: 20090173955
    Abstract: The invention relates to a monolithic white light emitting device using wafer bonding or metal bonding. In the invention, a conductive submount substrate is provided. A first light emitter is bonded onto the conductive submount substrate by a metal layer. In the first light emitter, a p-type nitride semiconductor layer, a first active layer, an n-type nitride semiconductor layer and a conductive substrate are stacked sequentially from bottom to top. In addition, a second light emitter is formed on a partial area of the conductive substrate. In the second light emitter, a p-type AlGaInP-based semiconductor layer, an active layer and an n-type AlGaInP-based semiconductor layer are stacked sequentially from bottom to top. Further, a p-electrode is formed on an underside of the conductive submount substrate and an n-electrode is formed on a top surface of the n-type AlGaInP-based semiconductor layer.
    Type: Application
    Filed: March 6, 2009
    Publication date: July 9, 2009
    Applicant: SANYO ELECTRIC-MECHANICS CO., LTD.
    Inventors: Min Ho KIM, Masayoshi KOIKE, Kyeong Ik MIN, Myong Soo CHO
  • Publication number: 20090101923
    Abstract: There is provided a semiconductor light emitting device, a method of manufacturing the same, and a semiconductor light emitting device package using the same. A semiconductor light emitting device having a first conductivity type semiconductor layer, an active layer, a second conductivity type semiconductor layer, a second electrode layer, and insulating layer, a first electrode layer, and a conductive substrate sequentially laminated, wherein the second electrode layer has an exposed area at the interface between the second electrode layer and the second conductivity type semiconductor layer, and the first electrode layer comprises at least one contact hole electrically connected to the first conductivity type semiconductor layer, electrically insulated from the second conductivity type semiconductor layer and the active layer, and extending from one surface of the first electrode layer to at least part of the first conductivity type semiconductor layer.
    Type: Application
    Filed: August 11, 2008
    Publication date: April 23, 2009
    Inventors: Pun Jae CHOI, Jin Hyun Lee, Ki Yeol Park, Myong Soo Cho
  • Patent number: 7514720
    Abstract: The invention relates to a monolithic white light emitting device using wafer bonding or metal bonding. In the invention, a conductive submount substrate is provided. A first light emitter is bonded onto the conductive submount substrate by a metal layer. In the first light emitter, a p-type nitride semiconductor layer, a first active layer, an n-type nitride semiconductor layer and a conductive substrate are stacked sequentially from bottom to top. In addition, a second light emitter is formed on a partial area of the conductive substrate. In the second light emitter, a p-type AlGaInP-based semiconductor layer, an active layer and an n-type AlGaInP-based semiconductor layer are stacked sequentially from bottom to top. Further, a p-electrode is formed on an underside of the conductive submount substrate and an n-electrode is formed on a top surface of the n-type AlGaInP-based semiconductor layer.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: April 7, 2009
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Min Ho Kim, Masayoshi Koike, Kyeong Ik Min, Myong Soo Cho
  • Publication number: 20080230789
    Abstract: A light emitting device including: at least one light emitting stack including first and second conductivity type semiconductor layers and an active layer disposed there between, the light emitting stack having first and second surfaces and side surfaces interposed between the first and second surfaces; first and second contacts formed on the first and second surface of the light emitting stack, respectively; a first insulating layer formed on the second surface and the side surfaces of the light emitting stack; a conductive layer connected to the second contact and extended along one of the side surfaces of the light emitting stack to have an extension portion adjacent to the first surface; and a substrate structure formed to surround the side surfaces and the second surface of the light emitting stack.
    Type: Application
    Filed: February 22, 2008
    Publication date: September 25, 2008
    Inventors: Grigory Onushkin, Jin Hyun Lee, Myong Soo Cho, Pun Jae Choi
  • Publication number: 20080191215
    Abstract: There is provided a semiconductor light emitting device that minimizes reflection or absorption of emitted light, maximizes luminous efficiency with the maximum light emitting area, enables uniform current spreading with a small area electrode, and enables mass production with high reliability and high quality. A semiconductor light emitting device according to an aspect of the invention includes first and second conductivity type semiconductor layers, an active layer formed therebetween, first electrode layer, and a second electrode part electrically connecting the semiconductor layers. The second electrode part includes an electrode pad unit, an electrode extending unit, and an electrode connecting unit connecting the electrode pad unit and electrode extending unit.
    Type: Application
    Filed: January 3, 2008
    Publication date: August 14, 2008
    Inventors: Pun Jae Choi, Ki Yeol Park, Sang Bum Lee, Seon Young Myoung, Myong Soo Cho
  • Publication number: 20080135859
    Abstract: A method of manufacturing a vertical structure light emitting diode device, the method including: sequentially forming a first conductivity type III-V group compound semiconductor layer, an active layer, and a second conductivity type III-V group compound semiconductor layer on a substrate for growth; bonding a conductive substrate to the second conductivity type III-V group compound semiconductor layer; removing the substrate for growth from the first conductivity type III-V group compound semiconductor layer; and forming an electrode on an exposed portion of the first conductive III-V group compound semiconductor layer due to the removing the substrate for growth, wherein the bonding a conductive substrate comprises partially heating a metal bonding layer by applying microwaves to a bonding interface while bringing the metal bonding layer into contact with the bonding interface.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 12, 2008
    Inventors: Myong Soo Cho, Ki Yeol Park, Sang Yeob Song, Si Hyuk Lee, Pun Jae Choi