Patents by Inventor Chang-Yeon Kim

Chang-Yeon 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).

  • Publication number: 20190165207
    Abstract: A light emitting chip includes a light emitting structure including a first light emitting sub-unit, a second light emitting sub-unit, and a third light emitting sub-unit vertically stacked on each other, and a first passivation layer covering at least part of the light emitting structure, in which the first passivation layer has a bottom surface that exposes the light emitting structure to permit light from the first, second, and third sub-units to be emitted from the light emitting chip.
    Type: Application
    Filed: November 22, 2018
    Publication date: May 30, 2019
    Inventors: Chang Yeon KIM, Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Jong Min Jang, Ho Joon Lee
  • Publication number: 20190165038
    Abstract: A light emitting diode (LED) stack for a display includes a first LED sub-unit having a first surface and a second surface, a second LED sub-unit disposed on the first surface of the first LED sub-unit, a third LED sub-unit disposed on the second LED sub-unit, a reflective electrode disposed on the second side of the second LED sub-unit and forming ohmic contact with the first LED sub-unit, and an ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit and forming ohmic contact with the first LED sub-unit, in which the second LED sub-unit and the third LED sub-unit are configured to transmit light generated from the first LED sub-unit, and the third LED sub-unit is configured to transmit light generated from the second LED sub-unit.
    Type: Application
    Filed: November 22, 2018
    Publication date: May 30, 2019
    Inventors: Jong Hyeon CHAE, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20190165037
    Abstract: A light emitting device including first, second, and third LED sub-units, and electrode pads disposed on the first LED sub-unit, electrically connected to the LED sub-units, and including a common electrode pad electrically connected to each of the LED sub-units, and first, second, and third electrode pads connected to a respective one of the LED sub-units, in which the common electrode pad, the second electrode pad, and the third electrode pad are electrically connected to the second LED sub-unit and the third LED sub-unit through holes that pass through the first LED sub-unit, the first, second, and third LED sub-units are configured to be independently driven, light generated in the first LED sub-unit emitted to the outside through the second and third LED sub-units, and light generated in the second LED sub-unit is emitted to the outside through the third LED sub-unit.
    Type: Application
    Filed: November 22, 2018
    Publication date: May 30, 2019
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Publication number: 20190148597
    Abstract: A light emitting element according to an embodiment of the present invention comprises a first conductive-type semiconductor layer including a contact region on the lower surface thereof, a light emitting structure which includes a mesa including a second conductive-type semiconductor layer and an active layer, a second electrode, a first insulation layer, an electrode cover layer, a first electrode, a second insulation layer, and a support structure. In addition, the mesa may include a body part and a plurality of protrusion parts protruding from the body part, the contact region may be disposed between the protrusion parts, and a part of the contact region may overlap with a second metal bulk in the vertical direction. Accordingly, current spreading efficiency can be improved, and thus luminance efficiency can be more improved.
    Type: Application
    Filed: December 19, 2018
    Publication date: May 16, 2019
    Inventors: Jong Hyeon CHAE, Chang Yeon KIM, Joon Sup LEE, Dae Woong SUH, Won Young ROH, Ju Yong PARK, Seung Hyun KIM
  • Patent number: 10290769
    Abstract: A light emitting diode includes: a first conductivity type semiconductor layer; a mesa including an active layer and a second conductivity type semiconductor layer, the mesa having a groove disposed under some region of the first conductivity type semiconductor layer to expose an edge of the first conductivity type semiconductor layer, the groove exposing the first conductivity type semiconductor layer; a first electrode including a first contact portion electrically connected to the first conductivity type semiconductor layer through the groove; a second electrode disposed between the first electrode and the second conductivity type semiconductor layer and electrically connected to the second conductivity type semiconductor layer; and an upper electrode pad disposed adjacent to the first conductivity type semiconductor layer and connected to the second electrode, wherein the groove has a shape surrounding a region including a center of the mesa and partially open.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: May 14, 2019
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Mi Hee Lee, Chang Yeon Kim, Ju Yong Park, Jong Kyun You, Joon Hee Lee
  • Patent number: 10283675
    Abstract: A light emitting diode including a semiconductor stack including a lower semiconductor layer, an active layer, and an upper semiconductor layer; an upper electrode connected to the upper semiconductor layer and including an electrode pad and extensions extending from the electrode pad; and a lower electrode connected to the lower semiconductor layer. The electrode pad includes a first electrode pad having an elongated shape, disposed along a first side of the upper semiconductor layer, and covering the upper semiconductor layer near the first side of the upper semiconductor layer, and the extensions include an edge extension extending along an edge of the upper semiconductor layer in the electrode pad and surrounding a luminous region and middle extensions extending from the edge extension or the electrode pad and dividing the luminous region into a plurality of luminous regions.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: May 7, 2019
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Kyun You, Byoung Kyu Park, Chang Yeon Kim, Chae Hon Kim
  • Patent number: 10283685
    Abstract: Provided are a light emitting device and a method of fabricating the same. The light emitting device includes: a light emitting structure including a first conductivity type semiconductor layer, a second conductivity type semiconductor layer, and an active layer and including a first surface and a second surface; first and second contact electrodes each ohmic-contacting the first and second conductivity type semiconductor layers; and first and second electrodes disposed on the first surface of the light emitting structure, in which the first and second electrodes each include sintered metal particles and the first and second electrodes each include inclined sides of which the tangential gradients with respect to sides of vertical cross sections thereof are changing.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: May 7, 2019
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chang Yeon Kim, Ju Yong Park, Sung Su Son
  • Patent number: 10270008
    Abstract: A light emitting element according to an embodiment of the present invention comprises a first conductive-type semiconductor layer including a contact region on the lower surface thereof, a light emitting structure which includes a mesa including a second conductive-type semiconductor layer and an active layer, a second electrode, a first insulation layer, an electrode cover layer, a first electrode, a second insulation layer, and a support structure. In addition, the mesa may include a body part and a plurality of protrusion parts protruding from the body part, the contact region may be disposed between the protrusion parts, and a part of the contact region may overlap with a second metal bulk in the vertical direction. Accordingly, current spreading efficiency can be improved, and thus luminance efficiency can be more improved.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: April 23, 2019
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Joon Sup Lee, Dae Woong Suh, Won Young Roh, Ju Yong Park, Seung Hyun Kim
  • Patent number: 10249797
    Abstract: Exemplary embodiments of the present invention relate to a high-efficiency light emitting diode (LED).
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: April 2, 2019
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Chang Yeon Kim, Da Hye Kim, Hong Chul Lim, Joon Hee Lee, Jong Kyun You
  • Patent number: 10249798
    Abstract: A light emitting device includes a light emitting structure including a support structure including a first bulk electrode a second bulk electrode disposed on and electrically connected to the first electrode and the second electrode, respectively. A substrate is disposed adjacent to the support structure, wherein each of the first and second bulk electrodes includes an upper region and a lower region with the upper regions of the first and second bulk electrodes being separated from each other by a first distance. The substrate includes a first interconnection portion and a second interconnection portion electrically connected to the first bulk electrode and the second bulk electrode, respectively, and separated from each other by a second distance. The second distance is greater than the first distance.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: April 2, 2019
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Chang Yeon Kim, Sung Su Son, Joon Sup Lee, Jong Hyeon Chae
  • Patent number: 10236418
    Abstract: Disclosed are a light-emitting element and a production method therefor. In one aspect, a light-emitting element is provided to comprise a light-emitting structure comprising a first and second semiconductor layers and an active layer; a first and second contact electrodes respectively making ohmic contact with the first and second semiconductor layers; an insulating layer for insulating the first contact electrode and second contact electrode; a first and second bulk electrodes respectively electrically linked to the first and second contact electrodes; an insulating support covering the side surfaces of the first and second bulk electrodes; a first wavelength converter covering the light-emitting structure; a light-transmitting layer positioned on the first wavelength converter; and a second wavelength converter positioned on the light-transmitting layer, and, in the present invention, white light emitted from the light-emitting element has a CIEx value of at least 0.390 on the CIE color coordinate chart.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 19, 2019
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chang Yeon Kim, Jong Hyeon Chae
  • Patent number: 10217912
    Abstract: An LED is provided to include: a first conductive type semiconductor layer; an active layer positioned over the first conductive type semiconductor layer; a second conductive type semiconductor layer positioned over the active layer; and a defect blocking layer comprising a masking region to cover at least a part of the top surface of the second conductive semiconductor layer and an opening region to partially expose the top surface of the second conductive type semiconductor layer, wherein the active layer and the second conductive type semiconductor layer are disposed to expose a part of the first conductive type semiconductor layer, and wherein the defect blocking layer comprises a first region and a second region surrounding the first region, and a ratio of the area of the opening region to the area of the masking region in the first region is different from a ratio of the area of the opening region to the area of the masking region in the second region.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: February 26, 2019
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Jong Min Jang, Won Young Roh, Dae Woong Suh, Min Woo Kang, Joon Sub Lee, Hyun A Kim, Kyoung Wan Kim, Chang Yeon Kim
  • Publication number: 20190044027
    Abstract: Disclosed herein is a vertical type light emitting diode having a mesa including a groove.
    Type: Application
    Filed: January 16, 2018
    Publication date: February 7, 2019
    Inventors: Mi Hee Lee, Chang Yeon Kim, Ju Yong Park, Jong Kyun You, Joon Hee Lee
  • Publication number: 20180351042
    Abstract: A light-emitting diode includes: a gallium nitride substrate; a first semiconductor layer disposed thereon; a mesa including a second semiconductor layer disposed on the first semiconductor layer and an intervening active layer; a first contact layer including an outer contact part in contact with the first semiconductor layer near an edge of the substrate and an inner contact part in contact with the first semiconductor layer within a region encompassed by the outer contact part; a second contact layer disposed on the mesa in contact with the second semiconductor layer; an upper insulation layer having first and second opening parts overlapping the first and second contact layers; and first and second electrode pads electrically connected to the first and second contact layers through the first and second opening parts, wherein the LED can be driven at 150 A/cm2 or more and has a maximum junction temperature of 180° C. or more.
    Type: Application
    Filed: August 10, 2018
    Publication date: December 6, 2018
    Inventors: Jong Min JANG, Seon Min BAE, Jae Hee LIM, Chang Yeon KIM, Chae Hon KIM
  • Patent number: 10133711
    Abstract: A display apparatus is disclosed, the display apparatus including: communication circuitry configured to receive a web-based content comprising a plurality of objects; a display configured to display an image; a memory configured to be loaded with data of the image displayed on the display; and at least one processor configured to load data of a first object in the memory and to not load data of a second object in the memory if an area of the first object is displayed to cover areas of one or more second objects of the plurality of objects of the web-based contents.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: November 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Yeon Kim, Jae Young Myo
  • Publication number: 20180309029
    Abstract: A light emitting device and a method of fabricating the same. The light emitting device includes: a light emitting structure including a first conductive type semiconductor layer, a second conductive type semiconductor layer, an active layer, and a partially exposed region of an upper surface of the first conductive type semiconductor layer; a transparent electrode disposed on the second conductive type semiconductor layer; a first insulation layer including a first opening and a second opening; a metal layer at least partially covering the first insulation layer; a first electrode electrically connected to the first conductive type semiconductor layer; and a second electrode electrically connected to the transparent electrode.
    Type: Application
    Filed: October 15, 2015
    Publication date: October 25, 2018
    Inventors: Chang Yeon Kim, Ju Yong Park, Sung Su Son
  • Publication number: 20180287021
    Abstract: An LED is provided to include: a first conductive type semiconductor layer; an active layer positioned over the first conductive type semiconductor layer; a second conductive type semiconductor layer positioned over the active layer; and a defect blocking layer comprising a masking region to cover at least a part of the top surface of the second conductive semiconductor layer and an opening region to partially expose the top surface of the second conductive type semiconductor layer, wherein the active layer and the second conductive type semiconductor layer are disposed to expose a part of the first conductive type semiconductor layer, and wherein the defect blocking layer comprises a first region and a second region surrounding the first region, and a ratio of the area of the opening region to the area of the masking region in the first region is different from a ratio of the area of the opening region to the area of the masking region in the second region.
    Type: Application
    Filed: November 27, 2017
    Publication date: October 4, 2018
    Inventors: Jong Hyeon Chae, Jong Min Jang, Won Young Roh, Dae Woong Suh, Min Woo Kang, Joon Sub Lee, Hyun A. Kim, Kyoung Wan Kim, Chang Yeon Kim
  • Patent number: 10073324
    Abstract: A security camera system includes: a camera module; a support portion arranged at one side of the camera module and connected to a housing bracket or an outside structure; a tilt axis portion connected to one side of the camera module and coupled to the support portion to be rotatable relative to the support portion; and a tilt motor configured to transfer a rotation force to the tilt axis portion and revolve around a rotation axis of the tilt axis portion during rotation of the tilt axis portion.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 11, 2018
    Assignee: Hanwha Techwin Co., Ltd.
    Inventors: YongSeob Lim, Kazushige Tamura, Chang Yeon Kim
  • Publication number: 20180233645
    Abstract: Disclosed herein is a light emitting device manufactured by separating a growth substrate in a wafer level. The light emitting device includes: a base; a light emitting structure disposed on the base; and a plurality of second contact electrodes disposed between the base and the light emitting structure, wherein the base includes at least two bulk electrodes electrically connected to the light emitting structure and an insulation support disposed between the bulk electrodes and enclosing the bulk electrodes, the insulation support and the bulk electrodes each including concave parts and convex parts engaged with each other on surfaces facing each other, and the convex parts including a section in which a width thereof is changed in a protrusion direction.
    Type: Application
    Filed: April 16, 2018
    Publication date: August 16, 2018
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Sung Su Son, Dae Woong Suh
  • Publication number: 20180226554
    Abstract: Disclosed herein is a light emitting device. The light emitting device is provided to include a light emitting structure, a first electrode pad, a second electrode pad and a heat dissipation pad, and a substrate on which the light emitting diode is mounted. The substrate includes a base; an insulation pattern formed on the base; and a conductive pattern disposed on the insulation pattern. The base includes a post and a groove separating the post from the conductive pattern. An upper surface of the post is placed lower than an upper surface of the conductive pattern, the heat dissipation pad contacts the upper surface of the post, and the first electrode pad and the second electrode pad contact the conductive pattern. With this structure, the light emitting device has excellent properties in terms of electrical stability and heat dissipation efficiency.
    Type: Application
    Filed: April 3, 2018
    Publication date: August 9, 2018
    Inventors: So Ra Lee, Chang Yeon Kim, Ju Yong Park, Sung Su Son