Patents by Inventor Chae Hon KIM

Chae Hon 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: 11935990
    Abstract: A light emitting diode including a side reflection layer. The light emitting diode includes: a semiconductor stack and a light exit surface having a roughened surface through which light generated from an active layer is emitted; side surfaces defining the light exit surface; and a side reflection layer covering at least part of the side surfaces. The light exit surface is disposed over a first conductivity type semiconductor layer opposite to the ohmic reflection layer, all layers from the active layer to the light exit surface are formed of gallium nitride-based semiconductors, and a distance from the active layer to the light exit surface is 50 ?m or more.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: March 19, 2024
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Min Jang, Chae Hon Kim, Chang Youn Kim, Jae Hee Lim
  • Publication number: 20240063341
    Abstract: A light-emitting device includes a light generating portion including an active layer interposed between a first conductivity type layer and a second conductivity type layer. The active layer generates light. The light-emitting device further includes a light guide layer disposed on an optical path of light generated from the active layer. The light guide layer includes a textured structure on the optical path. The light guide layer can have a same conductivity type as the first conductivity type layer.
    Type: Application
    Filed: October 30, 2023
    Publication date: February 22, 2024
    Inventors: Toshiya YOKOGAWA, Chae Hon KIM, Chung Hoon LEE
  • Patent number: 11843076
    Abstract: A lighting apparatus includes a light emitting diode, in which the light emitting diode includes an n-type nitride semiconductor layer, an active layer located on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer located on the active layer. The light emitting diode emits light that varies from yellow light to white light depending on a driving current.
    Type: Grant
    Filed: April 3, 2023
    Date of Patent: December 12, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Yong Hyun Baek, Ji Hun Kang, Chae Hon Kim, Ji Hoon Park, So Ra Lee
  • Patent number: 11804573
    Abstract: A group III-V light-emitting diode is provided. The light-emitting diode includes a light generating portion including an active layer interposed between a first conductivity type semiconductor layer and a second conductivity type semiconductor layer. The active layer generates light. The light-emitting diode further includes an optical trap disposed on an optical path of light generated from the active layer. The optical trap includes a light absorption layer interposed between light guide layers. The light-emitting diode further includes a side reflector disposed on a side surface of the optical trap.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: October 31, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Toshiya Yokogawa, Chae Hon Kim, Chung Hoon Lee
  • Publication number: 20230299229
    Abstract: A display apparatus includes multiple pixels. The pixels can emit one or more colors of light. Light of the same color emitted by two or more of the pixels can have wavelengths that differ by no more than one percent. The pixels can include a stacked structure including two or more subpixels, with each subpixel emitting light of a different color than the other subpixels in the stacked structure.
    Type: Application
    Filed: May 22, 2023
    Publication date: September 21, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Ji Hoon PARK, Ji Hun KANG, Chae Hon KIM, Yong Hyun BAEK, Hyo Shik CHOI
  • Publication number: 20230299122
    Abstract: A light emitting device for a display including a light emitting structure including a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer, and having a side surface exposing the active layer, in which a portion of the second conductivity type semiconductor layer and the active layer along an edge of the light emitting structure is insulative in a thickness direction to define an insulation region, and the insulation region includes implanted ions.
    Type: Application
    Filed: April 16, 2023
    Publication date: September 21, 2023
    Inventors: Chae Hon KIM, So Ra Lee
  • Publication number: 20230246122
    Abstract: A lighting apparatus includes a light emitting diode, in which the light emitting diode includes an n-type nitride semiconductor layer, an active layer located on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer located on the active layer. The light emitting diode emits light that varies from yellow light to white light depending on a driving current.
    Type: Application
    Filed: April 3, 2023
    Publication date: August 3, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Yong Hyun BAEK, Ji Hun KANG, Chae Hon KIM, Ji Hoon PARK, So Ra LEE
  • Publication number: 20230215977
    Abstract: A light emitting diode includes an n-type nitride semiconductor layer, a V-pit generation layer located over the n-type nitride semiconductor layer and having a V-pit, an active layer located on the V-pit generation layer, and a p-type nitride semiconductor layer located on the active layer. The active layer includes a well layer, which includes a first well layer portion formed along a flat surface of the V-pit generation layer and a second well layer portion formed in the V-pit of the V-pit generation layer. The active layer emits light having at least two peak wavelengths at a single chip level.
    Type: Application
    Filed: January 16, 2023
    Publication date: July 6, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Yong Hyun BAEK, Ji Hun KANG, Chae Hon KIM, Ji Hoon PARK
  • Publication number: 20230197913
    Abstract: A light emitting device and a light emitting module including the same are disclosed. The light emitting module may include: a circuit board; a plurality of light emitting devices disposed on the circuit board and emitting UV light; a plurality of wavelength conversion portions each disposed on a light emission surface of the light emitting device emitting UV light and converting a wavelength of light emitted from the light emitting device; and a molding portion covering the light emitting devices and the wavelength conversion portions formed on the circuit board. Each of the light emitting devices may include a first semiconductor layer, a second semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer. One surface of the first semiconductor layer may correspond to the light emission surface of the light emitting device.
    Type: Application
    Filed: December 16, 2022
    Publication date: June 22, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Seom Geun LEE, Ki Ho PARK, Jong Min JANG, Chae Hon KIM, Sang Min KIM
  • Patent number: 11658263
    Abstract: A method of fabricating a light emitting device includes (i) determining whether each measurement location is defective or not based on a measurement result of the emission wavelength of each location, (ii) forming a test stacked structure by combining one of the first wafers, one of the second wafers, and one of the third wafers in a set of wafers, and (iii) calculating a combination yield of the test stacked structure based on a count of defective measurement locations that overlap in the test stacked structure.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: May 23, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Ji Hoon Park, Ji Hun Kang, Chae Hon Kim, Yong Hyun Baek, Hyo Shik Choi
  • Patent number: 11631714
    Abstract: A light emitting device for a display including a light emitting structure including a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer, and having a side surface exposing the active layer, in which a portion of the second conductivity type semiconductor layer and the active layer along an edge of the light emitting structure is insulative in a thickness direction to define an insulation region, and the insulation region includes implanted ions.
    Type: Grant
    Filed: December 20, 2020
    Date of Patent: April 18, 2023
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chae Hon Kim, So Ra Lee
  • Patent number: 11621370
    Abstract: A lighting apparatus includes a light emitting diode, in which the light emitting diode includes an n-type nitride semiconductor layer, an active layer located on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer located on the active layer. The light emitting diode emits light that varies from yellow light to white light depending on an driving current.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: April 4, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Yong Hyun Baek, Ji Hun Kang, Chae Hon Kim, Ji Hoon Park, So Ra Lee
  • Publication number: 20230070171
    Abstract: A light emitting diode and a method of fabricating the same are provided. The light emitting diode according to exemplary embodiments includes a lower n-type semiconductor layer, an active layer, a p-type semiconductor layer, a high-concentration n-type semiconductor layer, and an upper n-type semiconductor layer. The high concentration n-type semiconductor layer can have a higher n-type doping concentration than that of the lower or upper n-type semiconductor layer. Oxygen concentrations on a lower surface and an upper surface of the high-concentration n-type semiconductor layer may be substantially same. An electron blocking layer may be interposed between the active layer and the p-type semiconductor layer.
    Type: Application
    Filed: September 7, 2022
    Publication date: March 9, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventor: Chae Hon KIM
  • Patent number: 11557695
    Abstract: A light emitting diode includes an n-type nitride semiconductor layer, a V-pit generation layer located over the n-type nitride semiconductor layer and having a V-pit, an active layer located on the V-pit generation layer, and a p-type nitride semiconductor layer located on the active layer. The active layer includes a well layer, which includes a first well layer portion formed along a flat surface of the V-pit generation layer and a second well layer portion formed in the V-pit of the V-pit generation layer. The light emitting diode emits light having at least two peak wavelengths at a single chip level.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: January 17, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Yong Hyun Baek, Ji Hun Kang, Chae Hon Kim, Ji Hoon Park
  • Publication number: 20220085251
    Abstract: A light emitting diode including a side reflection layer. The light emitting diode includes: a semiconductor stack and a light exit surface having a roughened surface through which light generated from an active layer is emitted; side surfaces defining the light exit surface; and a side reflection layer covering at least part of the side surfaces. The light exit surface is disposed over a first conductivity type semiconductor layer opposite to the ohmic reflection layer, all layers from the active layer to the light exit surface are formed of gallium nitride-based semiconductors, and a distance from the active layer to the light exit surface is 50 ?m or more.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Inventors: Jong Min Jang, Chae Hon Kim, Chang Youn Kim, Jae Hee Lim
  • Publication number: 20210399167
    Abstract: A lighting apparatus includes a light emitting diode, in which the light emitting diode includes an n-type nitride semiconductor layer, an active layer located on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer located on the active layer. The light emitting diode emits light that varies from yellow light to white light depending on an driving current.
    Type: Application
    Filed: May 24, 2021
    Publication date: December 23, 2021
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Yong Hyun BAEK, Ji Hun KANG, Chae Hon KIM, Ji Hoon PARK, So Ra LEE
  • Patent number: 11189755
    Abstract: A light emitting diode including a side reflection layer. The light emitting diode includes: a semiconductor stack and a light exit surface having a roughened surface through which light generated from an active layer is emitted; side surfaces defining the light exit surface; and a side reflection layer covering at least part of the side surfaces. The light exit surface is disposed over a first conductivity type semiconductor layer opposite to the ohmic reflection layer, all layers from the active layer to the light exit surface are formed of gallium nitride-based semiconductors, and a distance from the active layer to the light exit surface is 50 ?m or more.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: November 30, 2021
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Min Jang, Chae Hon Kim, Chang Youn Kim, Jae Hee Lim
  • Publication number: 20210328100
    Abstract: A light emitting diode includes an n-type nitride semiconductor layer, an active layer located on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer located on the active layer. The active layer has a single structure of a multi-quantum well in which a plurality of barrier layers and a plurality of well layers are stacked, and the active layer emits white light.
    Type: Application
    Filed: April 12, 2021
    Publication date: October 21, 2021
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Yong Hyun BAEK, Ji Hun KANG, Chae Hon KIM, Ji Hoon PARK
  • Publication number: 20210280738
    Abstract: A method of fabricating a light emitting device includes (i) determining whether each measurement location is defective or not based on a measurement result of the emission wavelength of each location, (ii) forming a test stacked structure by combining one of the first wafers, one of the second wafers, and one of the third wafers in a set of wafers, and (iii) calculating a combination yield of the test stacked structure based on a count of defective measurement locations that overlap in the test stacked structure.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 9, 2021
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Ji Hoon PARK, Ji Hun KANG, Chae Hon KIM, Yong Hyun BAEK, Hyo Shik CHOI
  • Publication number: 20210242371
    Abstract: A light emitting diode includes an n-type nitride semiconductor layer, a V-pit generation layer located over the n-type nitride semiconductor layer and having a V-pit, an active layer located on the V-pit generation layer, and a p-type nitride semiconductor layer located on the active layer. The active layer includes a well layer, which includes a first well layer portion formed along a flat surface of the V-pit generation layer and a second well layer portion formed in the V-pit of the V-pit generation layer. The light emitting diode emits light having at least two peak wavelengths at a single chip level.
    Type: Application
    Filed: February 2, 2021
    Publication date: August 5, 2021
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Yong Hyun BAEK, Ji Hun KANG, Chae Hon KIM, Ji Hoon PARK