Patents by Inventor Yu-Sik Kim

Yu-Sik Kim 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: 8772823
    Abstract: Light-emitting devices are provided, the light-emitting devices include a light-emitting structure layer having a first conductive layer, a light-emitting layer and a second conductive layer sequentially stacked on a first of a substrate, a plurality of seed layer patterns formed apart each other in the first conductive layer; and a plurality of first electrodes formed through the substrate, wherein each of the first electrodes extends from a second side of the substrate to each of the seed layer patterns.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: July 8, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Patent number: 8737783
    Abstract: A light guiding plate may include a substrate, a waveguide, and a reflective metal. The waveguide and the reflective metal may be formed on the substrate. The waveguide may guide light. The reflective metal may reflect the light guided along the waveguide to change a propagation direction of the light. A light guiding plate may include a substrate, a cladding layer, and a plurality of waveguides. The cladding layer may be formed on the substrate. The cladding layer may include a first insulating layer having a first refractive index. The plurality of waveguides may be formed on the cladding layer. The plurality of waveguides may include a second insulating layer having a second refractive index. The second refractive index may be higher than the first refractive index. The plurality of waveguides may guide light provided by a light emitting element. At least two of the waveguides may have different lengths.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: May 27, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Patent number: 8704260
    Abstract: A light-emitting device having improved light conversion efficiency, a light-emitting system including the same, and fabricating methods of the light-emitting device and the light-emitting system, are provided. The light-emitting device includes one or more light-emitting elements arranged on one surface of a substrate, and a phosphor layer disposed inside or on the substrate to a predetermined thickness and partially wavelength-converts the light emitted from the one or more light-emitting elements into light having different wavelength, wherein a light conversion efficiency of the phosphor layer is maximized when the phosphor layer has the predetermined thickness.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: April 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Publication number: 20140098533
    Abstract: Provided are a light-emitting device having improved light dispersion efficiency, a light-emitting system including the same, and fabricating methods of the light-emitting device and the light-emitting system. The light-emitting device includes one or more light-emitting elements arranged on first surface of a substrate, an insulation film formed on the first surface of a substrate so as to cover the one or more light-emitting elements, and a plurality of uneven patterns formed on the insulation film formed on each of the one or more light-emitting elements so as to be spaced apart from each other, wherein the plurality of uneven patterns are all convex patterns or concave patterns and each of the plurality of uneven patterns has a curved cross-sectional shape.
    Type: Application
    Filed: December 11, 2013
    Publication date: April 10, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yu-Sik KIM
  • Publication number: 20140061710
    Abstract: Provided are a method of fabricating a light-emitting apparatus with improved light extraction efficiency and a light-emitting apparatus fabricated using the method. The method includes: preparing a monocrystalline substrate; forming an intermediate structure on the substrate, the intermediate structure comprising a light-emitting structure which comprises a first conductive pattern of a first conductivity type, a light-emitting pattern, and a second conductive pattern of a second conductivity type stacked sequentially, a first electrode which is electrically connected to the first conductive pattern, and a second electrode which is electrically connected to the second conductive pattern; forming a polycrystalline region, which extends in a horizontal direction, by irradiating a laser beam to the substrate in the horizontal direction such that the laser beam is focused on a beam-focusing point within the substrate; and cutting the substrate in the horizontal direction along the polycrystalline region.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 6, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yu-Sik Kim, Seong-Deok Hwang, Seung-Jae Lee, Sun-Pil Youn
  • Patent number: 8637881
    Abstract: Provided are a method of fabricating a light-emitting apparatus with improved light extraction efficiency and a light-emitting apparatus fabricated using the method. The method includes: preparing a monocrystalline substrate; forming an intermediate structure on the substrate, the intermediate structure comprising a light-emitting structure which comprises a first conductive pattern of a first conductivity type, a light-emitting pattern, and a second conductive pattern of a second conductivity type stacked sequentially, a first electrode which is electrically connected to the first conductive pattern, and a second electrode which is electrically connected to the second conductive pattern; forming a polycrystalline region, which extends in a horizontal direction, by irradiating a laser beam to the substrate in the horizontal direction such that the laser beam is focused on a beam-focusing point within the substrate; and cutting the substrate in the horizontal direction along the polycrystalline region.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: January 28, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yu-Sik Kim, Seong-Deok Hwang, Seung-Jae Lee, Sun-Pil Youn
  • Publication number: 20140024158
    Abstract: Provided are a light-emitting element and a method of fabricating the same. The light-emitting element includes: a first pattern including conductive regions and non-conductive regions. The non-conductive regions are defined by the conductive regions. The light-emitting element also include an insulating pattern including insulating regions and non-insulating regions which correspond respectively to the conductive regions and non-conductive regions. The non-insulating regions are defined by the insulating regions. The light-emitting element further includes a light-emitting structure interposed between the first pattern and the insulating pattern. The light-emitting structure includes a first semiconductor pattern of a first conductivity type, a light-emitting pattern, and a second semiconductor pattern of a second conductivity type which are stacked sequentially. The light-emitting element also includes a second pattern formed in the non-insulating regions.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 23, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yu-Sik KIM
  • Patent number: 8628368
    Abstract: Provided are a light-emitting device having improved light dispersion efficiency, a light-emitting system including the same, and fabricating methods of the light-emitting device and the light-emitting system. The light-emitting device includes one or more light-emitting elements arranged on first surface of a substrate, an insulation film formed on the first surface of a substrate so as to cover the one or more light-emitting elements, and a plurality of uneven patterns formed on the insulation film formed on each of the one or more light-emitting elements so as to be spaced apart from each other, wherein the plurality of uneven patterns are all convex patterns or concave patterns and each of the plurality of uneven patterns has a curved cross-sectional shape.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: January 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Publication number: 20130320300
    Abstract: Light-emitting devices are provided, the light-emitting devices include a light-emitting structure layer having a first conductive layer, a light-emitting layer and a second conductive layer sequentially stacked on a first of a substrate, a plurality of seed layer patterns formed apart each other in the first conductive layer; and a plurality of first electrodes formed through the substrate, wherein each of the first electrodes extends from a second side of the substrate to each of the seed layer patterns.
    Type: Application
    Filed: August 7, 2013
    Publication date: December 5, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yu-Sik KIM
  • Publication number: 20130292710
    Abstract: A light emitting device includes: a support substrate; at least one light emitting laminate having a structure in which semiconductor layers are laminated and formed on the support substrate; a wall unit formed on the support substrate and surrounding the at least one light emitting laminate; and a wavelength conversion layer disposed above the at least one light emitting laminate.
    Type: Application
    Filed: May 7, 2013
    Publication date: November 7, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yu Sik KIM
  • Publication number: 20130285103
    Abstract: An emitting device including a first electrode, a second electrode spaced apart from the first electrode, an emitting pattern including a portion between the first electrode and the second electrode, and a block pattern including a portion between the emitting pattern and the first electrode and/or on a same level as the first electrode.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Inventors: Yu-Sik KIM, Seung-Jae LEE
  • Patent number: 8569772
    Abstract: Provided are a light-emitting element and a method of fabricating the same. The light-emitting element includes: a first pattern including conductive regions and non-conductive regions. The non-conductive regions are defined by the conductive regions. The light-emitting element also include an insulating pattern including insulating regions and non-insulating regions which correspond respectively to the conductive regions and non-conductive regions. The non-insulating regions are defined by the insulating regions. The light-emitting element further includes a light-emitting structure interposed between the first pattern and the insulating pattern. The light-emitting structure includes a first semiconductor pattern of a first conductivity type, a light-emitting pattern, and a second semiconductor pattern of a second conductivity type which are stacked sequentially. The light-emitting element also includes a second pattern formed in the non-insulating regions.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: October 29, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Publication number: 20130271042
    Abstract: In a light emitting device and system providing white light with various color temperatures are provided, a light emitting device includes a light emitting element (LED) that is operated by a driving bias and emits first light, and a phosphor layer including a phosphor that partially wavelength-converts first light and emits second light, thereby emitting white light using the first light and the second light, wherein the phosphor has a maximum conversion efficiency at a first level of the driving bias, and the LED has a maximum conversion efficiency at a second level of the driving bias, the first level being different from the first level.
    Type: Application
    Filed: June 10, 2013
    Publication date: October 17, 2013
    Inventor: Yu-Sik Kim
  • Patent number: 8546843
    Abstract: Light-emitting devices are provided, the light-emitting devices include a light-emitting structure layer having a first conductive layer, a light-emitting layer and a second conductive layer sequentially stacked on a first of a substrate, a plurality of seed layer patterns formed apart each other in the first conductive layer; and a plurality of first electrodes formed through the substrate, wherein each of the first electrodes extends from a second side of the substrate to each of the seed layer patterns.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: October 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Patent number: 8476666
    Abstract: An emitting device including a first electrode, a second electrode spaced apart from the first electrode, an emitting pattern including a portion between the first electrode and the second electrode, and a block pattern including a portion between the emitting pattern and the first electrode and/or on a same level as the first electrode.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: July 2, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yu-Sik Kim, Seung-Jae Lee
  • Patent number: 8459832
    Abstract: In a light emitting device and system providing white light with various color temperatures are provided, a light emitting device includes a light emitting element (LED) that is operated by a driving bias and emits first light, and a phosphor layer including a phosphor that partially wavelength-converts first light and emits second light, thereby emitting white light using the first light and the second light, wherein the phosphor has a maximum conversion efficiency at a first level of the driving bias, and the LED has a maximum conversion efficiency at a second level of the driving bias, the first level being different from the first level.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: June 11, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Patent number: 8415181
    Abstract: Provided is a light emitting element, a light emitting device including the same, and fabrication methods of the light emitting element and light emitting device. The light emitting device comprises a substrate, a light emitting structure including a first conductive layer of a first conductivity type, a light emitting layer, and a second conductive layer of a second conductivity type which are sequentially stacked, a first electrode which is electrically connected with the first conductive layer; and a second electrode which is electrically connected with the second conductive layer and separated apart from the first electrode, wherein at least a part of the second electrode is connected from a top of the light emitting structure, through a sidewall of the light emitting structure, and to a sidewall of the substrate.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: April 9, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yu-Sik Kim, Seong-Deok Hwang, Seung-Jae Lee, Sun-Pil Youn
  • Publication number: 20130069096
    Abstract: A light-emitting device having improved light conversion efficiency, a light-emitting system including the same, and fabricating methods of the light-emitting device and the light-emitting system, are provided. The light-emitting device includes one or more light-emitting elements arranged on one surface of a substrate, and a phosphor layer disposed inside or on the substrate to a predetermined thickness and partially wavelength-converts the light emitted from the one or more light-emitting elements into light having different wavelength, wherein a light conversion efficiency of the phosphor layer is maximized when the phosphor layer has the predetermined thickness.
    Type: Application
    Filed: November 13, 2012
    Publication date: March 21, 2013
    Inventor: Yu-Sik KIM
  • Patent number: 8361819
    Abstract: Methods of fabricating of a light-emitting device are provided, the methods include forming a plurality of light-emitting units on a substrate, measuring light characteristics of the plurality of light-emitting units, respectively, depositing a phosphor layer on the plurality of light-emitting units using a printing method, and cutting the substrate to separate the plurality of light-emitting units into unit by unit. The phosphor layer is adjustably deposited according to the measured light characteristics of the plurality of light-emitting units.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: January 29, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yu-Sik Kim
  • Publication number: 20130002148
    Abstract: An emitting device includes a first electrode on a base substrate, a second electrode on the base substrate, a third electrode on the base substrate, an emitting structure on and/or at a same level as the first electrode, a first pattern on the base substrate being electrically connected to the first electrode, and a plurality of second patterns on the base substrate, wherein at least one of the second patterns is arranged on a first side of the first pattern and is electrically connected to the second electrode and at least another one of the second patterns is arranged on a second side of the first pattern and is electrically connected to the third electrode, the first side opposing the second side.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Inventor: Yu-Sik KIM