Patents by Inventor Sang-hyun Sohn

Sang-hyun Sohn 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: 11930670
    Abstract: A display device comprises a substrate; a driving transistor including a first active layer and a switching transistor including a second active layer, the first active layer and the second active layer being disposed on the substrate; a first gate insulating layer disposed on the first active layer of the driving transistor and the second active layer of the switching transistor; first and second gate electrodes disposed on the first gate insulating layer to overlap the first active layer of the driving transistor and the second active layer of the switching transistor, respectively; a first interlayer insulating layer disposed on the first gate electrode and the second gate electrode; and a second interlayer insulating layer disposed on the first interlayer insulating layer to overlap the first active layer without overlapping the second active layer in a plan view.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: March 12, 2024
    Assignees: Samsung Display Co., Ltd., Industry-University Cooperation Foundation Hanyang University ERICA Campus
    Inventors: Sang Woo Sohn, Saeroonter Oh, Joon Seok Park, Young Joon Choi, Su Hyun Kim, Jun Hyung Lim
  • Patent number: 11630343
    Abstract: A display apparatus includes a light source emitting light; a light guide plate having a first surface and a second surface, and spreading light emitted from the light source therein to emit light through the first surface; and a local dimming unit configured to pass or scatter light emitted through the second surface of the light guide plate according to a position. The local dimming unit may include: an electro-optical layer configured to which optical properties change according to an electric field; and a plurality of electrodes positioned on the same plane to generate the electric field.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: April 18, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
  • Patent number: 11367403
    Abstract: A display apparatus includes a plurality of light sources configured to emit light; a light guide plate having a first surface and a second surface, configured to spread light emitted from the plurality of light sources therein to emit light through the first surface; and a local dimming unit configured to reflect or scatter light emitted through the second surface of the light guide plate according to a location. The local dimming unit may include an electro-optical layer configured to change optical properties according to an electric field; a plurality of electrodes located on the same plane, configured to generate the electric field; and a controller configured to change a voltage applied to the plurality of electrodes according to an image.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 21, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
  • Publication number: 20210373386
    Abstract: A display apparatus includes a light source emitting light; a light guide plate having a first surface and a second surface, and spreading light emitted from the light source therein to emit light through the first surface; and a local dimming unit configured to pass or scatter light emitted through the second surface of the light guide plate according to a position. The local dimming unit may include: an electro-optical layer configured to which optical properties change according to an electric field; and a plurality of electrodes positioned on the same plane to generate the electric field.
    Type: Application
    Filed: November 8, 2018
    Publication date: December 2, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Nam Seok ROH, Sang Hyun SOHN, Jong Hee HAN
  • Publication number: 20210366410
    Abstract: The display apparatus may comprise: a plurality of light sources for emitting light; a light guide plate, having a first surface and a second surface, for internally diffusing the light emitted from the plurality of light sources and emitting through the first surface; and a local dimming unit for reflecting or scattering, on the basis of location, the light emitted from the second surface of the light guide plate. Moreover, the local dimming unit may comprise: an electro-optic layer, the optical properties of which vary in accordance with an electric field; a plurality of electrodes located on the same plane and generating the electric field; and a control unit for varying the voltage applied to the plurality of electrodes in accordance with an image.
    Type: Application
    Filed: November 8, 2018
    Publication date: November 25, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Nam Seok ROH, Sang Hyun SOHN, Jong Hee HAN
  • Patent number: 11099428
    Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit emitting light forward, a liquid crystal panel disposed in front of the backlight unit and having a front polarizing film, and a diffusion film disposed in front of the liquid crystal panel, wherein the diffusion film includes a first refraction layer having a lens portion projecting forward, a second refraction layer disposed in front of the first refraction layer, a retardation member disposed at a front end of the lens portion, and a film polarizing layer disposed in front of the retardation member.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Go Hyun Kim, Sang Hyun Sohn, Jong Hee Han
  • Publication number: 20210200032
    Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit emitting light forward, a liquid crystal panel disposed in front of the backlight unit and having a front polarizing film, and a diffusion film disposed in front of the liquid crystal panel, wherein the diffusion film includes a first refraction layer having a lens portion projecting forward, a second refraction layer disposed in front of the first refraction layer, a retardation member disposed at a front end of the lens portion, and a film polarizing layer disposed in front of the retardation member.
    Type: Application
    Filed: August 30, 2018
    Publication date: July 1, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Go Hyun KIM, Sang Hyun SOHN, Jong Hee HAN
  • Patent number: 10877305
    Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: December 29, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Won Geun Ryu, Sang Hyun Sohn, Hyo Gun Lee
  • Patent number: 10687049
    Abstract: A back light apparatus includes a plurality of light sources configured to generate light; and a light guide part, wherein the light guide part includes a light guide plate configured to change a path of the light; a first pattern part disposed on a first surface of the light guide plate and configured to emit the light in a first direction; and a second pattern part disposed on a second surface of the light guide plate and configured to emit the light in a second direction.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 16, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun Sohn, Dae-Hee Lee
  • Patent number: 10606118
    Abstract: A display apparatus and a method of controlling the same are disclosed. The display apparatus includes: a light source configured to emit light having a wavelength less than or equal to a predetermined level; a waveguide plate having a slope pattern that allows the light emitted from the light source to be output to a left side or a right side about a vertical direction of an optical axis of the light source; and a display panel comprising a plurality of pixels, each of the plurality of pixels comprising a white sub pixel configured to transmit the light output from the waveguide plate.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: March 31, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun Sohn, Sang Yeon Shin
  • Publication number: 20200064664
    Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 27, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Nam Seok ROH, Won Geun RYU, Sang Hyun SOHN, Hyo Gun LEE
  • Patent number: 10527772
    Abstract: A display device includes a display panel; at least one light source package configured to emit light; and a light guide plate configured to receive the light emitted by the light source package and guide the light toward the display panel, wherein the at least one light source package includes: a light source configured to emit the light; a light converter disposed between the light source and the light guide plate, and configured to convert one or more properties of the light emitted by the light source; and a package housing in which the light source is disposed and including one side with an opening in which the light converter is disposed, the package housing including a unit support surface configured to support a side surface of the light converter.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: January 7, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun Sohn, Joon Seok Ahn, Dae Hee Lee
  • Patent number: 10317740
    Abstract: A display panel and a display apparatus including the display panel are provided. The display panel includes: a light transmitter disposed on a first pixel electrode and a light converting unit disposed on a second pixel electrode. A portion of the light converting unit extends toward the light transmitter and covers a part of the first pixel electrode.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: June 11, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kye Hoon Lee, Sang Hyun Sohn
  • Publication number: 20190163010
    Abstract: Disclosed is a reflective display device including: two plates arranged to be separated from each other; a liquid crystal layer arranged between the two plates; a reflective plate arranged under the liquid crystal layer; and a color filter arranged on the top of the liquid crystal layer and configured to selectively transmit a predetermined color of light, wherein the color filter has a bandwidth wider than a half width of light that passes the color filter. In embodiments of the present disclosure, the reflectivity is increased by widening a passage bandwidth of the color filter instead of adjusting the thickness of the color filter, so that the power efficiency is improved and an image with high color purity may be expressed. Furthermore, it is possible to select between reflective mode and transmissive mode depending on the ambient environment, thereby providing goo quality of images to the user in a more stable manner.
    Type: Application
    Filed: June 1, 2017
    Publication date: May 30, 2019
    Inventors: Sang Hyun SOHN, Ki Hyung KANG
  • Patent number: 10120200
    Abstract: A display apparatus includes: a backlight assembly configured to emit light; and a display panel configured to display a two-dimensional (2D) image or a three-dimensional (3D) image using the light, wherein the backlight assembly includes: a first backlight unit configured to emit light for creating the 2D image; a second backlight unit configured to emit light for creating the 3D image; and a first polarizing panel disposed between the first backlight unit and the second backlight unit, and configured to prevent at least a portion of leakage light leaking from the second backlight unit from being incident to the second backlight unit.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: November 6, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Kuen Yang, Keun-Bae Jeon, Sang Hyun Sohn
  • Patent number: 10012782
    Abstract: Disclosed herein are a backlight apparatus and a display apparatus having a light guide plate that includes light guide patterns in a waveform shape.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: July 3, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won Yong Lee, Sang Hyun Sohn
  • Publication number: 20180172894
    Abstract: A display device includes a display panel; at least one light source package configured to emit light; and a light guide plate configured to receive the light emitted by the light source package and guide the light toward the display panel, wherein the at least one light source package includes: a light source configured to emit the light; a light converter disposed between the light source and the light guide plate, and configured to convert one or more properties of the light emitted by the light source; and a package housing in which the light source is disposed and including one side with an opening in which the light converter is disposed, the package housing including a unit support surface configured to support a side surface of the light converter.
    Type: Application
    Filed: October 30, 2017
    Publication date: June 21, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun SOHN, Joon Seok AHN, Dae Hee LEE
  • Publication number: 20180157102
    Abstract: A display apparatus and a method of controlling the same are disclosed. The display apparatus includes: a light source configured to emit light having a wavelength less than or equal to a predetermined level; a waveguide plate having a slope pattern that allows the light emitted from the light source to be output to a left side or a right side about a vertical direction of an optical axis of the light source; and a display panel comprising a plurality of pixels, each of the plurality of pixels comprising a white sub pixel configured to transmit the light output from the waveguide plate.
    Type: Application
    Filed: September 21, 2017
    Publication date: June 7, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun SOHN, Sang Yeon SHIN
  • Publication number: 20180160107
    Abstract: A back light apparatus includes a plurality of light sources configured to generate light; and a light guide part, wherein the light guide part includes a light guide plate configured to change a path of the light; a first pattern part disposed on a first surface of the light guide plate and configured to emit the light in a first direction; and a second pattern part disposed on a second surface of the light guide plate and configured to emit the light in a second direction.
    Type: Application
    Filed: September 12, 2017
    Publication date: June 7, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun SOHN, Dae-Hee LEE
  • Publication number: 20180113341
    Abstract: A display panel and a display apparatus including the display panel are provided. The display panel includes: a light transmitter disposed on a first pixel electrode and a light converting unit disposed on a second pixel electrode. A portion of the light converting unit extends toward the light transmitter and covers a part of the first pixel electrode.
    Type: Application
    Filed: September 22, 2017
    Publication date: April 26, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kye Hoon LEE, Sang Hyun SOHN