Patents by Inventor Ho-sun Paek

Ho-sun Paek 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: 10964852
    Abstract: A light emitting diode (LED) module includes: a flexible substrate having a first surface on which a circuit pattern is disposed, and a second surface opposite the first surface; a plurality of light emitting diode (LED) chips mounted on the first surface of the flexible substrate, and electrically connected to the circuit pattern; an insulating reflective layer disposed on the first surface of the flexible substrate, and covering a portion of the circuit pattern; first and second connection terminals disposed at both ends of the flexible substrate, and connected to the circuit pattern; and a wavelength conversion layer covering the plurality of LED chips and surrounding the flexible substrate in a cross-sectional view.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: March 30, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Sung You, Ho Sun Paek, Ho Young Song, Jun Bum Lee
  • Patent number: 10685939
    Abstract: A white LED module includes a circuit board, at least one first LED light source on the circuit board and emitting a first white light having a first color temperature, at least one second LED light source on the circuit board and emitting a second white light having a second color temperature, higher than the first color temperature, a wiring structure in the circuit board to selectively drive the at least one first LED light source and the at least one second LED light source, and a transparent encapsulant on the circuit board, to cover the at least one first LED light source and the at least one second LED light source. The transparent encapsulant includes a transparent resin and a light-scattering powder in the transparent resin.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: June 16, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Sung You, Yun Tae Hwang, Ho Young Song, Won Hoe Koo, Jae Chul Kim, Ho Sun Paek
  • Publication number: 20190371768
    Abstract: A white LED module includes a circuit board, at least one first LED light source on the circuit board and emitting a first white light having a first color temperature, at least one second LED light source on the circuit board and emitting a second white light having a second color temperature, higher than the first color temperature, a wiring structure in the circuit board to selectively drive the at least one first LED light source and the at least one second LED light source, and a transparent encapsulant on the circuit board, to cover the at least one first LED light source and the at least one second LED light source. The transparent encapsulant includes a transparent resin and a light-scattering powder in the transparent resin.
    Type: Application
    Filed: January 9, 2019
    Publication date: December 5, 2019
    Inventors: Jae Sung YOU, Yun Tae Hwang, Ho Young Song, Won Hoe Koo, Jae Chul Kim, Ho Sun Paek
  • Publication number: 20190326480
    Abstract: A light emitting diode (LED) module includes: a flexible substrate having a first surface on which a circuit pattern is disposed, and a second surface opposite the first surface; a plurality of light emitting diode (LED) chips mounted on the first surface of the flexible substrate, and electrically connected to the circuit pattern; an insulating reflective layer disposed on the first surface of the flexible substrate, and covering a portion of the circuit pattern; first and second connection terminals disposed at both ends of the flexible substrate, and connected to the circuit pattern; and a wavelength conversion layer covering the plurality of LED chips and surrounding the flexible substrate in a cross-sectional view.
    Type: Application
    Filed: December 18, 2018
    Publication date: October 24, 2019
    Inventors: Jae Sung YOU, Ho Sun PAEK, Ho Young SONG, Jun Bum LEE
  • Publication number: 20190293242
    Abstract: An LED module includes a flexible substrate having a first surface on which a circuit pattern is disposed and a second surface opposing the first surface, and having a light transmittance of 80% or more; a plurality of LED chips mounted on the first surface of the flexible substrate, and electrically connected to the circuit pattern; first and second connection terminals disposed at both ends of the flexible substrate, and connected to the circuit pattern; and a wavelength converter covering the plurality of LED chips, and surrounding the flexible substrate.
    Type: Application
    Filed: November 5, 2018
    Publication date: September 26, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Mi Hyae Park, Ho Sun Paek, Jae Sung You, Chul Soo Yoon, Young Mook Lim
  • Patent number: 9269620
    Abstract: A bump manufacturing method may be provided. The bump manufacturing method may include forming a bump on an electrode pad included in a semiconductor device, and controlling a shape of the bump by reflowing the bump formed on the semiconductor device under an oxygen atmosphere.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung Tae Ok, Hak Hwan Kim, Ho Sun Paek, Kwon Joong Kim
  • Publication number: 20150060925
    Abstract: Disclosed are a light emitting device and a method of manufacturing the same. The light emitting device includes a substrate; a light emitting structure disposed on the substrate and having a stack structure in which a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer are stacked; a lens disposed on the light emitting structure; and a first terminal portion and a second terminal portion electrically connected to the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, respectively. At least one of the first and second terminal portions extends from a top surface of the light emitting structure along respective side surfaces of the light emitting structure and the substrate.
    Type: Application
    Filed: November 4, 2014
    Publication date: March 5, 2015
    Inventors: Hak Hwan KIM, Ho Sun PAEK, Hyung Kun KIM, Sung Kyong OH, Jong In YANG
  • Patent number: 8901586
    Abstract: Disclosed are a light emitting device and a method of manufacturing the same. The light emitting device includes a substrate; a light emitting structure disposed on the substrate and having a stack structure in which a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer are stacked; a lens disposed on the light emitting structure; and a first terminal portion and a second terminal portion electrically connected to the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, respectively. At least one of the first and second terminal portions extends from a top surface of the light emitting structure along respective side surfaces of the light emitting structure and the substrate.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: December 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hak Hwan Kim, Ho Sun Paek, Hyung Kun Kim, Sung Kyong Oh, Jong In Yang
  • Publication number: 20140299898
    Abstract: A light emitting device (LED) module, and manufacturing method of the same, which may be applied to various applications is provided. The LED module may be miniaturized by directly mounting an LED and a lens unit on a substrate, and price competitiveness may be enhanced by lowering a fraction defective and increasing yield of the LED module. In a method of manufacturing an LED module, an operation may be minimized and simplified by directly mounting LEDs and a plurality of lens units having various shapes, collectively forming the plurality of lens units, and by performing the operation on a wafer level. A heat radiation characteristic may be enhanced through use of a metallic material as a substrate and a bump.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventors: Hak Hwan KIM, Kyung Mi MOON, Ho Sun PAEK, Young Hee SONG
  • Patent number: 8822249
    Abstract: A light-emitting device and a method of manufacturing the same are provided. The light-emitting device includes a compound semiconductor structure having a first N-type compound semiconductor layer, an active layer, and a P-type compound semiconductor layer, a P-type electrode layer that is disposed on the P-type compound semiconductor layer and electrically connects with the P-type compound semiconductor layer, a plurality of insulation walls disposed at two sides of the compound semiconductor structure and the P-type electrode layer, a plurality of N-type electrode layers penetrating the plurality of insulation walls, and a conductive substrate on which a plurality of N-type electrode connecting layers respectively corresponding to a plurality of N-type electrode layers are separated from a P-type electrode connecting layer corresponding to the P-type electrode layer.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: September 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-sun Paek, Hak-hwan Kim, Sung-kyong Oh
  • Publication number: 20140160728
    Abstract: The present invention relates to a light emitting apparatus. According to one aspect of the present invention, the light emitting device comprises: a plurality of light emitting devices including a blue light emitting device emitting blue light and a UV light emitting device emitting ultraviolet light; and a wavelength conversion part arranged in the path of the light emitted from the plurality of light emitting devices, and provided with fluorescent substances to convert the wavelengths of the light emitted from the plurality of light emitting devices, wherein a fluorescent substance excited by and mixed with the blue light to obtain white light is arranged on a first area corresponding to the blue light emitting device, and at least a blue fluorescent substance is arranged on a second area corresponding to the UV light emitting device.
    Type: Application
    Filed: August 17, 2011
    Publication date: June 12, 2014
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Hyung Kun Kim, Suk Ho Chung, Ho Sun Paek, Jeong Wook Lee
  • Publication number: 20140120641
    Abstract: A flip chip light emitting device (LED) package and a manufacturing method thereof are provided.
    Type: Application
    Filed: January 6, 2014
    Publication date: May 1, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwon Joong KIM, Ho Sun PAEK, Hak Hwan KIM
  • Patent number: 8558268
    Abstract: Provided is a light emitting diode (LED) package. The LED package includes a package main body, first and second electrode structures, first and second LED chips, and first and second resin packing parts. The package main body includes a concave portion and a barrier wall dividing the concave portion into at least first and second accommodation recesses. The first and second electrode structures are formed at the package main body and are exposed at bottom surfaces of the first and second accommodation recesses respectively. The first and second LED chips are electrically connected to the first and second electrode structures are respectively mounted on the bottom surfaces of the first and second accommodation recesses. The first and second resin packing parts include at least one fluorescent material and are formed in the first and second accommodation recesses for packing the first and second LED chips.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: October 15, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung Kun Kim, Ho Sun Paek, Suk Ho Jung, Jeong Wook Lee
  • Publication number: 20130092962
    Abstract: A light emitting device (LED), a manufacturing method thereof, and an LED module using the same. The LED may include a first semiconductor layer, an active layer, and a second semiconductor layer formed sequentially on a light-transmitting substrate, a first electrode formed in a region exposed by removing a part of the first semiconductor layer, a second electrode formed on the second semiconductor layer, a passivation layer formed on the first electrode and the second electrode to expose a region of the first electrode and a region of the second electrode, a first bump formed in a first region including the first electrode exposed through the passivation layer, and extended to another region of the second electrode on which the passivation layer is formed, and a second bump formed in a second region including the second electrode exposed through the passivation layer.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 18, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Sun Paek, Hak Hwan Kim, Ill Heung Choi, Kyung Mi Moon
  • Patent number: 8378381
    Abstract: There is provided a GaN-based semiconductor light emitting device including: a substrate; and an n-type GaN-based semiconductor layer, an active layer and a p-type GaN-based semiconductor layer sequentially deposited on the substrate, wherein the active layer includes: a first barrier layer including AlxInyGa1-x-yN, where 0<x<1, 0<y<1, and 0<x+y<1; a second barrier layer having an energy band higher than an energy band of the first barrier layer and including one of InxGa1-xN, where 0<x<0.2, and GaN; a well layer including InxGa1-xN, where 0<x<1; a third barrier layer including one of InxGa1-xN, where 0<x<0.2 and GaN; and a lattice mismatch relaxation layer including one of AlxInyGa1-x-yN, where 0<x<1, 0<y<1, and 0<x+y<1, AlxGa1-xN, where 0<x<1, and GaN, the lattice mismatch relaxation layer having a lattice constant greater than a lattice constant of the well layer and smaller than a lattice constant of the p-type GaN-based semiconductor layer.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: February 19, 2013
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Tan Sakong, Cheol Soo Sone, Ho Sun Paek, Suk Ho Yoon, Jeong Wook Lee
  • Patent number: 8304791
    Abstract: A nitride-based semiconductor light emitting device having a structure capable of improving optical output performance, and methods of manufacturing the same are provided. The active layer may include a first barrier layer formed of InxGa(1-x)N (0.01?x?0.05) on a n-type semiconductor layer, a first diffusion barrier layer formed of InyGa(1-y)N (0?y<0.01) on the first barrier layer, and doped with an anti-defect agent including at least one of an N (nitrogen) element and a Si (silicon) element, a quantum well layer formed of InzGa(1-z)N (0.25?z?0.35) on the first diffusion barrier layer, a second diffusion barrier layer formed of InyGa(1-y)N (0?y<0.01) on the quantum well layer, and doped with an anti-defect agent including at least one of an N element and a Si element, and a second barrier layer formed of InxGa(1-x)N (0.01?x?0.05) on the second diffusion barrier layer.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: November 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tan Sakong, Joong-kon Son, Ho-sun Paek, Sung-nam Lee
  • Publication number: 20120267647
    Abstract: A light emitting device (LED) module, and manufacturing method of the same, which may be applied to various applications is provided. The LED module may be miniaturized by directly mounting an LED and a lens unit on a substrate, and price competitiveness may be enhanced by lowering a fraction defective and increasing yield of the LED module. In a method of manufacturing an LED module, an operation may be minimized and simplified by directly mounting LEDs and a plurality of lens units having various shapes, collectively forming the plurality of lens units, and by performing the operation on a wafer level. A heat radiation characteristic may be enhanced through use of a metallic material as a substrate and a bump.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 25, 2012
    Inventors: Hak Hwan KIM, Kyung Mi Moon, Ho Sun Paek, Young Hee Song
  • Publication number: 20120248408
    Abstract: A light-emitting device and a method of manufacturing the same are provided. The light-emitting device includes a compound semiconductor structure having a first N-type compound semiconductor layer, an active layer, and a P-type compound semiconductor layer, a P-type electrode layer that is disposed on the P-type compound semiconductor layer and electrically connects with the P-type compound semiconductor layer, a plurality of insulation walls disposed at two sides of the compound semiconductor structure and the P-type electrode layer, a plurality of N-type electrode layers penetrating the plurality of insulation walls, and a conductive substrate on which a plurality of N-type electrode connecting layers respectively corresponding to a plurality of N-type electrode layers are separated from a P-type electrode connecting layer corresponding to the P-type electrode layer.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Inventors: Ho-sun PAEK, Hak-hwan Kim, Sung-kyong Oh
  • Patent number: 8279904
    Abstract: A semiconductor light-emitting device including an active layer is provided. The light-emitting device includes an active layer between an n-type semiconductor layer and a p-type semiconductor layer. The active layer includes a quantum well layer formed of Inx1Ga(1?x1)N, where 0<x1?1, barrier layers formed of Inx2Ga(1?x2)N, where 0?x2<1, on opposite surfaces of the quantum well layer, and a diffusion preventing layer formed between the quantum well layer and at least one of the barrier layers. Due to the diffusion preventing layer between the quantum well layer and the barrier layers in the active layer, the light emission efficiency increases.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: October 2, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tan Sakong, Joong-kon Son, Ho-sun Paek, Sung-nam Lee
  • Patent number: 8278671
    Abstract: An LED package module according to an aspect of the invention may include: a substrate having predetermined electrodes thereon; a plurality of LED chips mounted onto the substrate, separated from each other at predetermined intervals, and electrically connected to the electrodes; a first color resin portion molded around at least one of the plurality of LED chips; a second color resin portion molded around all of the LED chips except for the LED chip around which the first color resin portion is molded, and having a different color from the first color resin portion; and a third color resin portion encompassing both the first color resin portion and the second color resin portion and having a different color from the first color resin portion and the second color resin portion.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: October 2, 2012
    Assignee: Samsung LED Co., Ltd.
    Inventors: Suk Ho Jung, Hyung Kun Kim, Hak Hwan Kim, Young Jin Lee, Ho Sun Paek