Patents by Inventor Eu Jin Hwang

Eu Jin Hwang 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: 10340309
    Abstract: A light emitting device includes a substrate and a plurality of light emitting cells disposed on the substrate. Each light emitting cell includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and the second semiconductors, a conductive material on the second semiconductor layer, an inclined surface, a first insulation layer overlaps each light emitting cell, an electrically conductive material overlaps the first insulation layer to couple two of the plurality of light emitting cells, and a second insulation layer overlaps the electrically conductive material. A light-transmitting material is used in both the first insulation layer and the second insulation layer. The inclined surface is continuous and has a slope of approximately 20° to approximately 80° from a horizontal plane based on the substrate.
    Type: Grant
    Filed: February 18, 2018
    Date of Patent: July 2, 2019
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Publication number: 20180175105
    Abstract: A light emitting device includes a substrate and a plurality of light emitting cells disposed on the substrate. Each light emitting cell includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and the second semiconductors, a conductive material on the second semiconductor layer, an inclined surface, a first insulation layer overlaps each light emitting cell, an electrically conductive material overlaps the first insulation layer to couple two of the plurality of light emitting cells, and a second insulation layer overlaps the electrically conductive material. A light-transmitting material is used in both the first insulation layer and the second insulation layer. The inclined surface is continuous and has a slope of approximately 20° to approximately 80° from a horizontal plane based on the substrate.
    Type: Application
    Filed: February 18, 2018
    Publication date: June 21, 2018
    Inventors: Jong Lam LEE, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Patent number: 9929208
    Abstract: A light emitting device includes a substrate and a plurality of light emitting cells disposed on the substrate. Each light emitting cell includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and the second semiconductors, a conductive material on the second semiconductor layer, an inclined surface, a first insulation layer overlaps each light emitting cell, an electrically conductive material overlaps the first insulation layer to couple two of the plurality of light emitting cells, and a second insulation layer overlaps the electrically conductive material. A light-transmitting material is used in both the first insulation layer and the second insulation layer. The inclined surface is continuous and has a slope of approximately 20° to approximately 80° from a horizontal plane based on the substrate.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: March 27, 2018
    Assignee: Seoul Vlosys Co., Ltd.
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Publication number: 20170186810
    Abstract: A light emitting device includes a substrate and a plurality of light emitting cells disposed on the substrate. Each light emitting cell includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and the second semiconductors, a conductive material on the second semiconductor layer, an inclined surface, a first insulation layer overlaps each light emitting cell, an electrically conductive material overlaps the first insulation layer to couple two of the plurality of light emitting cells, and a second insulation layer overlaps the electrically conductive material. A light-transmitting material is used in both the first insulation layer and the second insulation layer. The inclined surface is continuous and has a slope of approximately 20° to approximately 80° from a horizontal plane based on the substrate.
    Type: Application
    Filed: March 16, 2017
    Publication date: June 29, 2017
    Inventors: JONG LAM LEE, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Patent number: 9627435
    Abstract: A light emitting device includes a substrate and a plurality of light emitting cells disposed on the substrate. Each light emitting cell includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and the second semiconductors, a conductive material on the second semiconductor layer, an inclined surface, a first insulation layer overlaps each light emitting cell, an electrically conductive material overlaps the first insulation layer to couple two of the plurality of light emitting cells, and a second insulation layer overlaps the electrically conductive material. A light-transmitting material is used in both the first insulation layer and the second insulation layer. The inclined surface is continuous and has a slope of approximately 20° to approximately 80° from a horizontal plane based on the substrate.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: April 18, 2017
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Publication number: 20160087003
    Abstract: A light emitting device includes a substrate and a plurality of light emitting cells disposed on the substrate. Each light emitting cell includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and the second semiconductors, a conductive material on the second semiconductor layer, an inclined surface, a first insulation layer overlaps each light emitting cell, an electrically conductive material overlaps the first insulation layer to couple two of the plurality of light emitting cells, and a second insulation layer overlaps the electrically conductive material. A light-transmitting material is used in both the first insulation layer and the second insulation layer. The inclined surface is continuous and has a slope of approximately 20° to approximately 80° from a horizontal plane based on the substrate.
    Type: Application
    Filed: December 3, 2015
    Publication date: March 24, 2016
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Patent number: 9209223
    Abstract: The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20° to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20° to 80° from a horizontal plane.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: December 8, 2015
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Publication number: 20150102367
    Abstract: The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20° to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20° to 80° from a horizontal plane.
    Type: Application
    Filed: November 21, 2014
    Publication date: April 16, 2015
    Inventors: Jong Lam LEE, Jae Ho LEE, Yeo Jin YOON, Eu Jin HWANG, Dae Won KIM
  • Patent number: 8895957
    Abstract: The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: November 25, 2014
    Assignee: Seoul Viosys Co., Ltd
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Patent number: 8716727
    Abstract: Disclosed is an AC light emitting device having photonic crystal structures and a method of fabricating the same. The light emitting device includes a plurality of light emitting cells and metallic wirings electrically connecting the light emitting cells with one another. Further, each of the light emitting cells includes a first conductive type semiconductor layer, a second conductive type semiconductor layer disposed on one region of the first conductive type semiconductor layer, and an active layer interposed between the first and second conductive type semiconductor layers. In addition, a photonic crystal structure is formed in the second conductive type semiconductor layer. The photonic crystal structure prevents light emitted from the active layer from laterally propagating by means of a periodic array, such that light extraction efficiency of the light emitting device can be improved.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: May 6, 2014
    Assignee: Seoul Opto Device Co., Ltd.
    Inventors: Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Jong Kyu Kim, Jun Hee Lee
  • Patent number: 8704246
    Abstract: The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: April 22, 2014
    Assignee: Seoul Opto Device Co., Ltd.
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Publication number: 20130341592
    Abstract: The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane.
    Type: Application
    Filed: August 30, 2013
    Publication date: December 26, 2013
    Applicant: Seoul Opto Device Co., Ltd.
    Inventors: Jong Lam LEE, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Patent number: 8592802
    Abstract: A nitride light emitting diode, on a patterned substrate, comprising a nitride interlayer having at least two periods of alternating layers of InxGa1-xN and InyGa1-yN where 0<x<1 and 0?y<1, and a nitride based active region having at least one quantum well structure on the nitride interlayer.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 26, 2013
    Assignee: The Regents of the University of California
    Inventors: Michael Iza, Hitoshi Sato, Eu Jin Hwang, Steven P. DenBaars, Shuji Nakamura
  • Publication number: 20130234173
    Abstract: The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane.
    Type: Application
    Filed: April 12, 2013
    Publication date: September 12, 2013
    Applicant: Seoul Opto Device Co., Ltd.
    Inventors: Jong Lam LEE, Jae Ho LEE, Yeo Jin YOON, Eu Jin HWANG, Dae Won KIM
  • Patent number: 8476648
    Abstract: The present invention relates to a light emitting device and a method of manufacturing the light emitting device. According to the present invention, the light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: July 2, 2013
    Assignee: Seoul Opto Device Co., Ltd.
    Inventors: Jong Lam Lee, Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Dae Won Kim
  • Patent number: 8294386
    Abstract: The present invention relates to a light emitting device. The light emitting device according to the present invention comprises a light emitting cell block having a plurality of light emitting cells; and a bridge rectifying circuit connected to input and output terminals of the light emitting cell block, wherein the bridge rectifying circuit includes a plurality of diodes between nodes. In manufacturing an AC light emitting device with a bridge rectifying circuit built therein, the present invention can provide a light emitting device capable of enhancing the reliability and luminance of the light emitting device by setting the size of diodes of the bridge rectifying circuit to be a certain size and controlling the number thereof.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 23, 2012
    Assignee: Seoul Opto Device Co., Ltd.
    Inventors: Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Lacroix Yves
  • Publication number: 20120205625
    Abstract: A nitride light emitting diode, on a patterned substrate, comprising a nitride interlayer having at least two periods of alternating layers of InxGa1-xN and InyGa1-yN where 0<x<1 and 0?y<1, and a nitride based active region having at least one quantum well structure on the nitride interlayer.
    Type: Application
    Filed: April 24, 2012
    Publication date: August 16, 2012
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Michael Iza, Hitoshi Sato, Eu Jin Hwang, Steven P. DenBaars, Shuji Nakamura
  • Patent number: 8183557
    Abstract: A nitride light emitting diode, on a patterned substrate, comprising a nitride interlayer having at least two periods of alternating layers of InxGa1?xN and InyGa1?yN where 0<x<1 and 0?y<1, and a nitride based active region having at least one quantum well structure on the nitride interlayer.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: May 22, 2012
    Assignee: The Regents of the University of California
    Inventors: Michael Iza, Hitoshi Sato, Eu Jin Hwang, Steven P. DenBaars, Shuji Nakamura
  • Publication number: 20120013260
    Abstract: The present invention relates to a light emitting device. The light emitting device according to the present invention comprises a light emitting cell block having a plurality of light emitting cells; and a bridge rectifying circuit connected to input and output terminals of the light emitting cell block, wherein the bridge rectifying circuit includes a plurality of diodes between nodes. In manufacturing an AC light emitting device with a bridge rectifying circuit built therein, the present invention can provide a light emitting device capable of enhancing the reliability and luminance of the light emitting device by setting the size of diodes of the bridge rectifying circuit to be a certain size and controlling the number thereof.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: SEOUL OPTO DEVICE CO., LTD.
    Inventors: Jae Ho LEE, Yeo Jin YOON, Eu Jin HWANG, Lacroix YVES
  • Patent number: 8054002
    Abstract: The present invention relates to a light emitting device. The light emitting device according to the present invention comprises a light emitting cell block having a plurality of light emitting cells; and a bridge rectifying circuit connected to input and output terminals of the light emitting cell block, wherein the bridge rectifying circuit includes a plurality of diodes between nodes. In manufacturing an AC light emitting device with a bridge rectifying circuit built therein, the present invention can provide a light emitting device capable of enhancing the reliability and luminance of the light emitting device by setting the size of diodes of the bridge rectifying circuit to be a certain size and controlling the number thereof.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: November 8, 2011
    Assignee: Seoul Opto Device Co., Ltd.
    Inventors: Jae Ho Lee, Yeo Jin Yoon, Eu Jin Hwang, Lacroix Yves