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).

  • Patent number: 11527514
    Abstract: A light emitting device for a display includes a pixel region including first, second, and third LED stacks, an adhesive layer disposed between the first and second LED stacks, or between the second and third LED stacks, a metal bonding layer at least partially surrounded by the adhesive layer, and disposed between and is electrically connected to the first and second LED stacks, or the second and third LED stacks, and a common electrode pad connected to the first, second, and third LED stacks, first, second, and third electrode pads connected to the first, second, and third LED stacks, respectively, and the first, second, and third LED stacks are configured to be independently driven using the electrode pads.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: December 13, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Seong Gyu Jang, Ho Joon Lee, Jong Min Jang, Dae Sung Cho
  • Patent number: 11527519
    Abstract: A light emitting device for a display including a first substrate, a first LED sub-unit disposed on the first substrate, a second LED sub-unit disposed on the first LED sub-unit, a third LED sub-unit disposed on the second LED sub-unit, a second substrate disposed on the third LED sub-unit, a first electrode pad, a second electrode pad, a third electrode pad, and a fourth electrode pad disposed on the second substrate, and through-hole vias electrically connecting the second, third, and fourth electrode pads to the first, second, and third LED sub-units, respectively, in which the first electrode pad is electrically connected to the first LED sub-unit without overlapping any through-hole vias.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: December 13, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Chang Yeon Kim, Seong Gyu Jang, Ho Joon Lee, Jong Min Jang
  • Patent number: 11527513
    Abstract: A light emitting device for a display including a plurality of pixel regions defined between at least one separation region disposed between the pixel regions, and a barrier disposed in the separation region, in which each of the pixel regions includes a first LED stack, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, and electrode pads electrically connected to the first, second, and third LED stacks, the electrode pads comprising a common electrode pad, a first electrode pad, a second electrode pad, and a third electrode pad, the common electrode pad is connected to the first, second, and third LED stacks, the first, second, and third electrode pads are connected to the first, second, and third LED stacks, respectively, and the first, second, and third LED stacks are configured to be independently driven using the electrode pads.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: December 13, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Seong Gyu Jang, Ho Joon Lee, Jong Min Jang, Dae Sung Cho
  • Publication number: 20220393063
    Abstract: A light emitting chip including a light emitting structure including first, second, and third light emitting sub-units to emit light of a first color, a second color, and a third color and vertically stacked on each other, and having at least one mesa structure and at least one sidewall having a stepped structure; a plurality of vias electrically connected to the light emitting sub-units, each via has a top surface exposed from the light emitting structure and a bottom surface contacting the light emitting structure, a part of the bottom surfaces of the vias disposed on substantially the same level; and a first passivation layer covering at least a part of the light emitting structure, in which the first passivation layer has a bottom surface exposing 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: June 22, 2022
    Publication date: December 8, 2022
    Inventors: Chang Yeon KIM, Jong Hyeon CHAE, Chung Hoon LEE, Seong Gyu JANG, Jong Min JANG, Ho Joon LEE
  • Publication number: 20220392950
    Abstract: A display apparatus including a thin film transistor (TFT) substrate; a first LED sub-unit, a second LED sub-unit, and a third LED sub-unit; first, second, third, and fourth electrode pads disposed between the TFT substrate and the first LED sub-unit; and connectors connecting the first, second, and third LED sub-units to a respective one of the electrode pads, in which the first, second, and third sub-units are configured to be independently driven; light generated from the first LED sub-unit is emitted to the outside of the display apparatus by passing through the second and third LED sub-units; light generated from the second LED sub-unit is emitted to the outside of the display apparatus by passing through the third LED sub-unit; and at least one of the connectors includes a first portion electrically connecting a first surface of the first LED sub-unit to the second electrode pad.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 8, 2022
    Inventors: Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE, Chang Yeon KIM, Chung Hoon LEE
  • Publication number: 20220392879
    Abstract: A light emitting device including a first LED sub-unit having a thickness in a first direction, a second LED sub-unit disposed on a portion of the first LED sub-unit in the first direction, each of the first and second LED sub-units comprising a first-type semiconductor layer, a second-type semiconductor layer, and an active layer, a reflective electrode disposed adjacent to the first LED sub-unit and electrically connected to the first-type semiconductor layer of the first LED sub-unit, and a first ohmic electrode forming ohmic contact with the second-type semiconductor layer of the first LED sub-unit, in which the active layer of the first LED sub-unit is configured to generate light, includes AlxGa(1-x-y)InyP (0?x?1, 0?y?1), and overlaps the active layer of the second LED sub-unit in the first direction, and the active layer of the second LED sub-unit includes the same material as the active layer of the first LED sub-unit.
    Type: Application
    Filed: June 20, 2022
    Publication date: December 8, 2022
    Inventors: Jong Hyeon CHAE, Chang Yeon Kim, Ho Joon Lee, Seong Gyu Jang, Chung Hoon Lee, Dae Sung Cho
  • Publication number: 20220359474
    Abstract: A light emitting device for a display including: a base layer; a first LED sub-unit, a second LED sub-unit, and a third LED sub-unit on the base layer; and a supporting layer covering the first LED sub-unit, the second LED sub-unit, and the third LED sub-unit, in which the third LED sub-unit is configured to emit light having a shorter wavelength than that of light emitted from the first LED sub-unit, and to emit light having a longer wavelength than that of light emitted from the second LED sub-unit, and a luminous intensity ratio of light emitted from the third LED sub-unit and the second LED sub-unit is configured to be about 6:1.
    Type: Application
    Filed: July 25, 2022
    Publication date: November 10, 2022
    Inventors: Jong Min JANG, Chang Yeon KIM
  • Patent number: 11476298
    Abstract: A light emitting diode (LED) stack for a display including a first LED sub-unit configured to emit a first colored light, a second LED sub-unit disposed on the first LED sub-unit and configured to emit a second colored light, and a third LED sub-unit disposed on at least one of the first LED sub-unit and the second LED sub-unit and configured to emit a third colored light, in which the first LED sub-unit is configured to emit light through the second LED sub-unit and the third LED sub-unit, and the second LED sub-unit is configured to emit light through the third LED sub-unit.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: October 18, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20220326047
    Abstract: A camera device according to the present embodiment comprises: a first operation part comprising one of a first coil or a magnet and arranged on a fixed member; a second operation part which comprises the other one of the first coil and the magnet, is arranged on a movable member, and faces the first operation part; a hall sensor facing one of the first operation part and the second operation part; and a second coil arranged near the hall sensor, wherein at least a portion of the second coil is arranged between the hall sensor and the first coil.
    Type: Application
    Filed: June 2, 2020
    Publication date: October 13, 2022
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Bon Seok KU, Chang Yeon KIM
  • Patent number: 11469342
    Abstract: A method of manufacturing a light emitting device including forming first light emitting parts on a first substrate, the first light emitting part including a first n-type semiconductor layer and a first mesa structure including a first active layer, a first p-type semiconductor layer, and a first electrode and exposing a portion of the first n-type semiconductor layer, forming second light emitting parts on a second substrate, the second light emitting part including a second n-type semiconductor layer and a second mesa structure including a second active layer, a second p-type semiconductor layer, and a second electrode and exposing a portion of the second n-type semiconductor layer, attaching a first removable carrier onto the second light emitting parts and enclosing the second light emitting parts, removing the second substrate from the second light emitting parts, and bonding the second light emitting parts to the first light emitting parts.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: October 11, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Min Jang, Chang Yeon Kim, Myoung Hak Yang
  • Patent number: 11430929
    Abstract: A light emitting device including a first light emitting part including a first n-type semiconductor layer, a first active layer, and a first p-type semiconductor layer, a second light emitting part disposed on a first surface of the first light emitting part, and including a second n-type semiconductor layer, a second active layer, and a second p-type semiconductor layer, the second n-type semiconductor layer having a first surface and a second surface opposing the first surface, a third light emitting part disposed on a first surface of the second light emitting part, and including a third n-type semiconductor layer, a third active layer, and a third p-type semiconductor layer, a first contact structure contacting the first surface of the second n-type semiconductor layer, and a second contact structure contacting the second surface of the second n-type semiconductor layer.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: August 30, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Min Jang, Chang Yeon Kim
  • Publication number: 20220256058
    Abstract: The camera module or camera device according to the embodiment may include a base, a first lens assembly and a second lens assembly disposed and moved within the base, and a third lens assembly disposed and fixed to the base. The first lens assembly includes a first lens barrel in which a first lens is disposed, and a first driver housing in which a first driving part is disposed, and the second lens assembly comprises a second lens barrel in which a second lens is disposed. The second driving part housing may include a second driving part. The base may include a base stopper that limits strokes of the first lens assembly and the second lens assembly. The lens housing of the third lens assembly may include a barrel stopper to limit strokes of the first lens assembly and the second lens assembly.
    Type: Application
    Filed: May 12, 2020
    Publication date: August 11, 2022
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Kyung Won KIM, Hyun Gyu ROH, Chang Yeon KIM
  • Publication number: 20220252959
    Abstract: A camera actuator according to the embodiment includes a housing; a prism unit disposed in the housing; and a driving unit for tilting the prism unit; wherein the prism unit includes a prism mover including a receiving portion; and a prism disposed in the receiving portion; wherein the housing includes a sidewall and a guide portion including an inclined surface disposed on the sidewall.
    Type: Application
    Filed: July 15, 2020
    Publication date: August 11, 2022
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Chang Yeon KIM, Sung Guk LEE
  • Patent number: 11398462
    Abstract: A light emitting device for a display including a first LED sub-unit, a second LED sub-unit disposed on the first LED sub-unit, and a third LED sub-unit disposed on the second LED sub-unit, in which the third LED sub-unit is configured to emit light having a shorter wavelength than that of light emitted from the first LED sub-unit, and to emit light having a longer wavelength than that of light emitted from the second LED sub-unit.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: July 26, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Min Jang, Chang Yeon Kim
  • Publication number: 20220229347
    Abstract: A camera module according to an embodiment may include a base 20, a first lens assembly 110 and a second lens assembly 120 disposed on the base 20, wherein the first lens assembly 110 may include a first driving part 116 and a third driving part 141. The second lens assembly 120 may include a second driving part 126 and a fourth driving part 142. In the first lens assembly 110, the first driving part 116 may include a first magnet 116b and a first yoke 116a. The third driving part 141 may include a first coil part 141b and a third yoke 141a. In the second lens assembly 120, the second driving part 126 may include a second magnet 126b and a second yoke 126a, and the fourth driving part 142 may include a second coil part 142b and a fourth yoke 142a.
    Type: Application
    Filed: April 24, 2020
    Publication date: July 21, 2022
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Kyung Won KIM, Chang Yeon KIM, Hyun Gyu ROH
  • Publication number: 20220221734
    Abstract: A camera module is provided. A camera module according to an aspect of the present invention comprises: a stator; a mover arranged in the stator; a first driver arranged on the stator; a second driver arranged on the mover and facing the first driver; a stiffener including an external portion coupled to the stator, an internal portion coupled to the mover, and a connector for connecting the external portion to the internal portion; a substrate coupled to the stator and the mover, and arranged on the stiffener; and a lens module coupled to the substrate.
    Type: Application
    Filed: May 27, 2020
    Publication date: July 14, 2022
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Kyung Won KIM, Chang Yeon KIM, Hyun Gyu ROH
  • Publication number: 20220201166
    Abstract: A camera module or camera device according to an embodiment includes a base, a first lens assembly disposed in the base, a first coil part disposed on the base, a first spacer disposed on the base, a first spacer disposed on the first spacer, and a first position detection sensor disposed on the first spacer. The first spacer includes a first support portion and a first protrusion protruding from the first support portion, and the first position detection sensor may be disposed on the first protrusion, and the first protrusion may be disposed in the hollow of the first coil part.
    Type: Application
    Filed: May 8, 2020
    Publication date: June 23, 2022
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Hyun Gyu ROH, Kyung Won KIM, Chang Yeon KIM
  • Patent number: 11355482
    Abstract: A light emitting diode pixel for a display including a first LED sub-unit, a second LED sub-unit disposed on a portion of the first LED sub-unit, a third LED sub-unit disposed on a portion of the second LED sub-unit, and a reflective electrode disposed adjacent to the first LED sub-unit, in which each of the first to third LED sub-units comprises an n-type semiconductor layer and a p-type semiconductor layer, each of the n-type semiconductor layers of the first, second, and third LED stacks is electrically connected to the reflective electrode, and the first LED sub-unit, the second LED sub-unit, and the third LED sub-unit are configured to be independently driven.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: June 7, 2022
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Ho Joon Lee, Seong Gyu Jang, Chung Hoon Lee, Dae Sung Cho
  • Publication number: 20220171157
    Abstract: A camera module according to an embodiment may include a base including a first side wall and a second side wall corresponding to the first side wall, a first guide part disposed adjacent to the first side wall of the base, a second guide part disposed adjacent to the second side wall of the base, a first lens assembly that moves along the first guide part, a second lens assembly that moves along the second guide part, a first ball disposed between the first guide part and the first lens assembly, and a second ball disposed between the second guide part and the second lens assembly.
    Type: Application
    Filed: April 8, 2020
    Publication date: June 2, 2022
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Hyun Gyu ROH, Chang Yeon KIM
  • Publication number: 20220165718
    Abstract: A light emitting diode stack for a display including a first LED stack, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, and a conductive growth substrate coupled to at least one of the second LED stack and the third LED stack, in which light generated from the first LED stack is configured to be emitted to the outside of the light emitting diode stack through the second LED stack, the third LED stack, and the conductive growth substrate, and light generated from the second LED stack is configured to be emitted to the outside of the light emitting diode stack through the third LED stack and the conductive growth substrate.
    Type: Application
    Filed: December 2, 2021
    Publication date: May 26, 2022
    Inventors: Jong Hyeon CHAE, Chang Yeon KIM, Ho Joon LEE, Seong Gyu JANG, Chung Hoon LEE, Dae Sung CHO