Patents by Inventor Wan-Ho Lee

Wan-Ho Lee 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: 20140231849
    Abstract: Semiconductor light-emitting devices including a semiconductor region that includes a light-emitting structure; and an electrode layer including a first reflection metal layer that contacts a first portion of the semiconductor region and being configured to reflect light from the light-emitting structure and a second reflection metal layer that contacts a second portion of the semiconductor region and being configured to reflect light from the light-emitting structure, wherein the second reflection metal layer is spaced apart from the first reflection metal layer and at least partially covers the first reflection metal layer.
    Type: Application
    Filed: December 3, 2013
    Publication date: August 21, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Yeob SONG, Gi-Bum KIM, Hyun-Young KIM, Ju-Heon YOON, Wan-Ho LEE, Won-Goo HUR
  • Patent number: 8785962
    Abstract: There is provided a semiconductor light emitting device including: a semiconductor light emitting laminate including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer interposed therebetween; a first electrode having at least one bonding pad formed on a portion of an upper surface of the first conductive semiconductor layer; a second electrode having an ohmic contact layer formed on the second conductive semiconductor layer; and a current blocking layer between the second conductive semiconductor layer and the ohmic contact layer having a plurality of patterns formed thereon, the plurality of patterns being arrayed such that intervals between patterns adjacent to a region overlapped with the bonding pad are smaller an interval between patterns of another regions.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: July 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Wan Ho Lee
  • Publication number: 20140199095
    Abstract: An image forming apparatus has an improved structure which avoids additional expenses associated with packing a developing unit and allows the developing unit to be stably stored. The image forming apparatus may include a body, a first developing unit accommodating portion and a second developing unit accommodating portion disposed at different positions in the body, and a developing unit which is allowed to be detachably accommodated in the first developing unit accommodating portion and the second developing unit accommodating portion. When accommodated in the first developing unit accommodating portion, the developing unit may be disposed such that it does not perform image formation. When accommodated in the second developing unit accommodating portion, the developing unit may be disposed to perform image formation.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 17, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hwan Jin YOON, Jeong Jae Seong, Wan Ho Lee, Jeong Won Hwang
  • Patent number: 8674594
    Abstract: A light-emitting device comprises a substrate; a light-emitting layer formed on the substrate; a transparent electrode layer formed on the light-emitting layer, the transparent electrode layer having a curved surface; and a reflective layer formed on and along the curved surface of the transparent electrode layer such that the curved surface of the transparent electrode layer is transferred so as to reflect the light generated from the light-emitting layer toward the light-emitting layer.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: March 18, 2014
    Assignee: Korea University Industrial & Academic Collaboration Foundation
    Inventors: Tae-Geun Kim, Wan-Ho Lee
  • Publication number: 20130307007
    Abstract: A light emitting device includes a first semiconductor layer, an active layer, and a second semiconductor layer, and first and second electrodes electrically connected to the first and second semiconductor layers, respectively. The second electrode includes a reflective pad portion, a transparent electrode layer, a reflective finger portion and an electrode pad portion. The reflective pad portion is disposed in a region of an upper surface of the second semiconductor layer. The transparent electrode layer is disposed on the second semiconductor layer and has an opening encompassing the reflective pad portion such that the transparent electrode layer is not in contact with the reflective pad portion. The reflective finger portion extends from the reflective pad portion and has at least a portion thereof disposed on the transparent electrode layer. The electrode pad portion covers the reflective pad portion to be in contact with the transparent electrode layer.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 21, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jin Young CHOI, Jae Ho HAN, Ki Seok KIM, Wan Ho LEE, Myeong Ha KIM, Hae Soo HA
  • Publication number: 20120299048
    Abstract: There is provided a semiconductor light emitting device including: a semiconductor light emitting laminate including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer interposed therebetween; a first electrode having at least one bonding pad formed on a portion of an upper surface of the first conductive semiconductor layer; a second electrode having an ohmic contact layer formed on the second conductive semiconductor layer; and a current blocking layer between the second conductive semiconductor layer and the ohmic contact layer having a plurality of patterns formed thereon, the plurality of patterns being arrayed such that intervals between patterns adjacent to a region overlapped with the bonding pad are smaller an interval between patterns of another regions.
    Type: Application
    Filed: May 25, 2012
    Publication date: November 29, 2012
    Inventor: Wan Ho LEE
  • Publication number: 20120132374
    Abstract: A sealed blind for a double window is provided. A double window is installed in a frame formed by upper, lower and side frames in which an inner glass plate and an outer glass plate are installed spaced apart by a predetermined interval. A blind is installed inside the double window. An elevating shaft is connected to the blind and is configured to wind and unwind the blind. A sealed rotating unit is configured to rotate the elevating shaft. A first side of the rotating unit is installed in the elevating shaft and a second side of the rotating unit is disposed at an outer side of the side frame of the double window, such that outside air and dust are not introduced. An elevating wire is wound around the rotating unit and is configured to operate the rotating unit.
    Type: Application
    Filed: June 11, 2010
    Publication date: May 31, 2012
    Inventor: Wan-Ho Lee
  • Publication number: 20120086037
    Abstract: A light-emitting device comprises a substrate; a light-emitting layer formed on the substrate; a transparent electrode layer formed on the light-emitting layer, the transparent electrode layer having a curved surface; and a reflective layer formed on and along the curved surface of the transparent electrode layer such that the curved surface of the transparent electrode layer is transferred so as to reflect the light generated from the light-emitting layer toward the light-emitting layer.
    Type: Application
    Filed: December 15, 2011
    Publication date: April 12, 2012
    Inventors: Tae-Geun KIM, Wan-Ho LEE
  • Patent number: 8113903
    Abstract: A flip-chip type light-emitting device and manufacturing method thereof provides a curved surface formed on the transparent electrode layer and a reflective layer transferred with the curved surface of the transparent electrode layer is additionally formed on the transparent electrode layer, so that the light generated from the active layer is incident to the reflective layer through the p-type nitride layer and the transparent electrode layer, and then is reflected from the curved surface of the reflective layer so as to exhibit an effect of extracting a larger amount of light in a vertical direction as compared to the conventional light-emitting device.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: February 14, 2012
    Assignee: Korea University Industrial & Academic Collaboration Foundation
    Inventors: Tae-Geun Kim, Wan-Ho Lee
  • Publication number: 20090290355
    Abstract: A flip-chip type light-emitting device and manufacturing method thereof provides a curved surface formed on the transparent electrode layer and a reflective layer transferred with the curved surface of the transparent electrode layer is additionally formed on the transparent electrode layer, so that the light generated from the active layer is incident to the reflective layer through the p-type nitride layer and the transparent electrode layer, and then is reflected from the curved surface of the reflective layer so as to exhibit an effect of extracting a larger amount of light in a vertical direction as compared to the conventional light-emitting device.
    Type: Application
    Filed: February 25, 2009
    Publication date: November 26, 2009
    Inventors: Tae-Geun Kim, Wan-Ho Lee