Patents by Inventor Jitsuo OTA

Jitsuo OTA 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: 11776448
    Abstract: The disclosure relates to a light emitting diode (LED) that is capable of emitting a plurality of lights having different wavelengths from one another, and independently controlling the intensity of the plurality of emitted lights and a manufacturing method of the LED, and a display device including the LED.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: October 3, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jitsuo Ota, Jihoon Kang
  • Publication number: 20230144996
    Abstract: A micro light emitting diode (LED) includes: a current spreading layer including a light-emitting surface; a first electrode disposed on the light-emitting surface of the current spreading layer and electrically connected to the current spreading layer; a first cladding layer and a second cladding layer that are stacked on the current spreading layer; an active layer disposed between the first cladding layer and the second cladding layer; a second electrode; and a current guiding part disposed between the second electrode and the second cladding layer, and positioned in a central part of the second cladding layer, the current guiding part being and configured to guide a current to flow away from a side surface of the micro LED.
    Type: Application
    Filed: January 13, 2023
    Publication date: May 11, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jihoon KANG, Jenghun SUH, Jitsuo OTA, Myunghee KIM
  • Patent number: 11495170
    Abstract: A display panel including an LED device and a method including: forming a plurality of light emitting diodes (LEDs); and forming a plurality of partition walls that divide light-emitting regions by each of the plurality of LEDs, wherein the forming the plurality of LEDs includes: etching a growth substrate to form a plurality of LEDs and forming a plurality of protrusions and a plurality of depressions on the growth substrate; and forming a reflector layer on a surface of the plurality of protrusions and a surface of the plurality of depressions, and wherein the forming the plurality of partition walls includes removing a part of the growth substrate so that the plurality of partition walls are formed based on the plurality of protrusions, and a space between the plurality of partition walls is formed based on the plurality of depressions.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: November 8, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myunghee Kim, Jenghun Suh, Jaephil Shim, Jihoon Kang, Jitsuo Ota
  • Patent number: 11444117
    Abstract: A light emitting element, a manufacturing method therefor, and a display device including the light emitting element are disclosed. Particularly, disclosed are a multi-tunnel junction light emitting element having two or more light emitting regions, which are horizontally separated from each other, and a manufacturing method therefor, and disclosed is a display device which includes the light emitting element so as to efficiently arrange pixels and independently control the light emitting regions.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinhee Kang, Jitsuo Ota
  • Patent number: 11417810
    Abstract: An LED device includes: a first semiconductor layer of a first type; a second semiconductor layer of a second type; a light emitting layer formed between the first semiconductor layer and the second semiconductor layer and configured to emit light; and a filter formed on the second semiconductor layer and configured to transmit light in the second wavelength band within the first wavelength band. The filter includes a defect layer, first refractive layers, and second refractive layers having a refractive index greater than a refractive index of the first refractive layers, the first refractive layers and the second refractive layers are formed alternately on one side and other side of the defect layer. A thickness of the defect layer is determined based on a center wavelength of the first wavelength band, a peak wavelength of the second wavelength band and a refractive index of the defect layer.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 16, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jihoon Kang, Jitsuo Ota, Jenghun Suh, Jaephil Shim, Myunghee Kim
  • Patent number: 11133431
    Abstract: An LED, a manufacturing method thereof, and a display device including an LED are provided. Specifically, the disclosure relates to a flip-chip LED with high efficiency including a current confinement structure and a manufacturing method thereof, and a display device including such an LED. In particular, a flip-chip LED according to the disclosure includes a resistive area that surrounds a light-emitting layer and restricts current flow from the light emitting layer to the sidewalls.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: September 28, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jitsuo Ota, Jihoon Kang, Sungtae Kim, Shunsuke Kimura, Yongdok Cha
  • Publication number: 20210280631
    Abstract: A light emitting element, a manufacturing method therefor, and a display device including the light emitting element are disclosed. Particularly, disclosed are a multi-tunnel junction light emitting element having two or more light emitting regions, which are horizontally separated from each other, and a manufacturing method therefor, and disclosed is a display device which includes the light emitting element so as to efficiently arrange pixels and independently control the light emitting regions.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 9, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinhee KANG, Jitsuo OTA
  • Publication number: 20210005797
    Abstract: An LED device includes: a first semiconductor layer of a first type; a second semiconductor layer of a second type; a light emitting layer formed between the first semiconductor layer and the second semiconductor layer and configured to emit light; and a filter formed on the second semiconductor layer and configured to transmit light in the second wavelength band within the first wavelength band. The filter includes a defect layer, first refractive layers, and second refractive layers having a refractive index greater than a refractive index of the first refractive layers, the first refractive layers and the second refractive layers are formed alternately on one side and other side of the defect layer. A thickness of the defect layer is determined based on a center wavelength of the first wavelength band, a peak wavelength of the second wavelength band and a refractive index of the defect layer.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jihoon KANG, Jitsuo OTA, Jenghun SUH, Jaephil SHIM, Myunghee KIM
  • Publication number: 20200349882
    Abstract: Disclosed are a display panel including an LED device and a method for manufacturing a display module. According to an embodiment, the method for manufacturing the display module includes: forming a plurality of light emitting diodes (LEDs); and forming a plurality of partition walls that divide light-emitting regions by each of the plurality of LEDs, wherein the forming the plurality of LEDs includes: etching a growth substrate to form a plurality of LEDs and forming a plurality of protrusions and a plurality of depressions on the growth substrate; and forming a reflector layer on a surface of the plurality of protrusions and a surface of the plurality of depressions, and wherein the forming the plurality of partition walls includes removing a part of the growth substrate so that the plurality of partition walls are formed based on the plurality of protrusions, and a space between the plurality of partition walls is formed based on the plurality of depressions.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 5, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myunghee KIM, Jenghun SUH, Jaephil SHIM, Jihoon KANG, Jitsuo OTA
  • Publication number: 20200350477
    Abstract: A display panel including a plurality of LED elements and a driving circuit configured to drive the plurality of LED elements. The plurality of LED elements includes an LED element having a first light emitting cell including a first light emitting layer, a tunnel junction layer formed on the first light emitting layer, and a second light emitting cell formed on the tunnel junction layer and including a second light emitting layer. A first electrode is electrically connected to the first light emitting cell, and a second electrode is electrically connected to the second light emitting cell. The first light emitting cell is electrically connected to the second light emitting cell through the tunnel junction layer. The LED element is a flip-chip type LED element.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 5, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jaephil SHIM, Jihoon KANG, Myunghee KIM, Jenghun SUH, Jitsuo OTA
  • Publication number: 20200327844
    Abstract: The disclosure relates to a light emitting diode (LED) that is capable of emitting a plurality of lights having different wavelengths from one another, and independently controlling the intensity of the plurality of emitted lights and a manufacturing method of the LED, and a display device including the LED.
    Type: Application
    Filed: April 9, 2020
    Publication date: October 15, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jitsuo OTA, Jihoon KANG
  • Publication number: 20200161499
    Abstract: An LED, a manufacturing method thereof, and a display device including an LED are provided. Specifically, the disclosure relates to a flip-chip LED with high efficiency including a current confinement structure and a manufacturing method thereof, and a display device including such an LED. In particular, a flip-chip LED according to the disclosure includes a resistive area that surrounds a light-emitting layer and restricts current flow from the light emitting layer to the sidewalls.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 21, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jitsuo OTA, Jihoon KANG, Sungtae KIM, Shunsuke KIMURA, Yongdok CHA