Patents by Inventor Chi-O Cho

Chi-O Cho 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: 9978973
    Abstract: An organic light emitting display apparatus including a substrate including a plurality of pixel areas; a pixel electrode on the substrate; an opposite electrode on the pixel electrode, the opposite electrode transmitting light; an organic light emitting layer between the pixel electrode and the opposite electrode, the organic light emitting layer emitting a first light toward the opposite electrode; a light emitting layer on the opposite electrode, the light emitting layer absorbing a portion of the first light and emitting a second light; and a sealing layer on the light emitting layer, the sealing layer sealing the pixel electrode, the opposite electrode, the organic light emitting layer, and the light emitting layer.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: May 22, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chi-O Cho, Byungchoon Yang, Young-Jun Seo, Won Sang Park
  • Patent number: 9899625
    Abstract: A display device includes pixels, each pixel including a first electrode, a first organic layer disposed on the first electrode, and a second electrode disposed on the first organic layer, in which the first electrode includes a first overlapping electrode portion overlapping each of the first organic layer and the second electrode, and a first non-overlapping electrode portion not overlapping the first organic layer and the second electrode, and connected to the first overlapping electrode portion.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: February 20, 2018
    Assignee: Samsung Display Co., Ltd
    Inventors: Hyesog Lee, Chi-o Cho, Jaejoong Kwon, Byungchoon Yang
  • Publication number: 20180019377
    Abstract: A light emitting device includes first and second electrodes spaced apart from each other on a substrate, at least one bar-type LED having a first end on the first electrode and a second end on the second electrode, and an insulative support body between the substrate and the bar-type LED. The at least one bar-type LED has a length greater than a width.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 18, 2018
    Inventors: Dae Hyun KIM, Jong Hyuk KANG, Joo Yeol LEE, Hyun Deok IM, Chi O CHO, Hyun Min CHO
  • Publication number: 20180019426
    Abstract: A light emitting device includes a plurality of unit light emitting regions on a substrate. At least one of the unit light emitting regions includes at least one pair of first and second electrodes that are spaced apart, at least one first bar-type LED in a first layer on the substrate, and at least one second bar-type LED in a second layer on the substrate. At least one of the first bar-type LED or the second bar-type LED is electrically connected between the first electrode and the second electrode.
    Type: Application
    Filed: July 14, 2017
    Publication date: January 18, 2018
    Inventors: Hyun Deok IM, Jong Hyuk KANG, Dae Hyun KIM, Joo Yeol LEE, Chi O CHO, Hyun Min CHO
  • Publication number: 20170162815
    Abstract: An organic light emitting display apparatus including a substrate including a plurality of pixel areas; a pixel electrode on the substrate; an opposite electrode on the pixel electrode, the opposite electrode transmitting light; an organic light emitting layer between the pixel electrode and the opposite electrode, the organic light emitting layer emitting a first light toward the opposite electrode; a light emitting layer on the opposite electrode, the light emitting layer absorbing a portion of the first light and emitting a second light; and a sealing layer on the light emitting layer, the sealing layer sealing the pixel electrode, the opposite electrode, the organic light emitting layer, and the light emitting layer.
    Type: Application
    Filed: February 22, 2017
    Publication date: June 8, 2017
    Inventors: Chi-O CHO, Byungchoon YANG, Young-Jun SEO, Won Sang PARK
  • Patent number: 9620737
    Abstract: An organic light emitting display apparatus includes a substrate including a pixel region, a first electrode on the substrate, a second electrode on the first electrode, an organic light emission layer between the first and second electrodes to emit light, a plurality of layers on the second electrode, and a light compensation pattern on the second electrode and overlapping the pixel region, the light compensation pattern including a plurality of protrusion patterns having progressively decreasing widths as a distance from a center of the pixel region increases, and a plurality of grooves separating the protrusions in a direction parallel to the substrate from the center of the pixel region.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: April 11, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyesog Lee, Chi-o Cho
  • Patent number: 9583727
    Abstract: An organic light emitting display apparatus including a substrate including a plurality of pixel areas; a pixel electrode on the substrate; an opposite electrode on the pixel electrode, the opposite electrode transmitting light; an organic light emitting layer between the pixel electrode and the opposite electrode, the organic light emitting layer emitting a first light toward the opposite electrode; a light emitting layer on the opposite electrode, the light emitting layer absorbing a portion of the first light and emitting a second light; and a sealing layer on the light emitting layer, the sealing layer sealing the pixel electrode, the opposite electrode, the organic light emitting layer, and the light emitting layer.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: February 28, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chi-O Cho, Byungchoon Yang, Young-Jun Seo, Won Sang Park
  • Patent number: 9508280
    Abstract: A method of compensating color of a transparent display device includes generating a first pixel data by adding an input image pixel data and an external optical data which represents an effect of an external light on the transparent display device, generating a second pixel data having the same color as the input image pixel data by scaling the first pixel data, and generating an output image pixel data by subtracting the external optical data from the second pixel data.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: November 29, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Jun Seo, Byung-Choon Yang, Chi-O Cho
  • Publication number: 20160336528
    Abstract: A display device includes pixels, each pixel including a first electrode, a first organic layer disposed on the first electrode, and a second electrode disposed on the first organic layer, in which the first electrode includes a first overlapping electrode portion overlapping each of the first organic layer and the second electrode, and a first non-overlapping electrode portion not overlapping the first organic layer and the second electrode, and connected to the first overlapping electrode portion.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 17, 2016
    Inventors: Hyesog LEE, Chi-o CHO, Jaejoong KWON, Byungchoon YANG
  • Publication number: 20160327720
    Abstract: A quantum rod sheet includes: a first support layer including a plurality of grooves which extends substantially in a predetermined direction; a plurality of quantum rods arranged substantially in the predetermined direction along the grooves of the first support layer; and a second support layer which covers the first support layer and the quantum rods.
    Type: Application
    Filed: July 22, 2016
    Publication date: November 10, 2016
    Inventors: Chi-O CHO, Dong Hoon KIM, Sang Woo HA
  • Publication number: 20160285043
    Abstract: An organic light emitting display apparatus includes a substrate including a pixel region, a first electrode on the substrate, a second electrode on the first electrode, an organic light emission layer between the first and second electrodes to emit light, a plurality of layers on the second electrode, and a light compensation pattern on the second electrode and overlapping the pixel region, the light compensation pattern including a plurality of protrusion patterns having progressively decreasing widths as a distance from a center of the pixel region increases, and a plurality of grooves separating the protrusions in a direction parallel to the substrate from the center of the pixel region.
    Type: Application
    Filed: February 4, 2016
    Publication date: September 29, 2016
    Inventors: Hyesog LEE, Chi-o CHO
  • Patent number: 9427933
    Abstract: A quantum rod sheet includes: a first support layer including a plurality of grooves which extends substantially in a predetermined direction; a plurality of quantum rods arranged substantially in the predetermined direction along the grooves of the first support layer; and a second support layer which covers the first support layer and the quantum rods.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: August 30, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chi-O Cho, Dong Hoon Kim, Sang Woo Ha
  • Publication number: 20160211471
    Abstract: An exemplary embodiment provides a stretchable display device which is stretched in at least one direction. The stretchable display device according to the exemplary embodiment includes a stretchable substrate, a display unit, a plurality of rigid lenses, and a transparent elastic part. The display unit is on the stretchable substrate, and includes a plurality of light sources and a plurality of stretchable electrodes. The rigid lenses are disposed to correspond to the plurality of light sources, respectively. The transparent elastic part encloses the plurality of rigid lenses on the display unit and is stretched along with the stretched substrate and when being stretched, forms lens surfaces corresponding to the plurality of rigid lenses, respectively.
    Type: Application
    Filed: July 7, 2015
    Publication date: July 21, 2016
    Inventors: Jae Joong KWON, Chi-O CHO, Sang-Il PARK
  • Patent number: 9391286
    Abstract: An exemplary embodiment provides a stretchable display device which is stretched in at least one direction. The stretchable display device according to the exemplary embodiment includes a stretchable substrate, a display unit, a plurality of rigid lenses, and a transparent elastic part. The display unit is on the stretchable substrate, and includes a plurality of light sources and a plurality of stretchable electrodes. The rigid lenses are disposed to correspond to the plurality of light sources, respectively. The transparent elastic part encloses the plurality of rigid lenses on the display unit and is stretched along with the stretched substrate and when being stretched, forms lens surfaces corresponding to the plurality of rigid lenses, respectively.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Joong Kwon, Chi-O Cho, Sang-Il Park
  • Patent number: 9310047
    Abstract: A display apparatus includes a curved display panel having a first curvature; and a plurality of light source units arranged along the first curvature the display panel. Each light source unit includes a reflective part including a reflective upper surface which has a second curvature different from the first curvature of the display panel; and a light source part which is at a first side of the reflective part, and includes a light source which generates and provides a light to the reflective surface.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: April 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kwang-Wook Choi, JooYoung Kim, Chi-O Cho, Insun Hwang
  • Publication number: 20160056399
    Abstract: An organic light emitting display apparatus including a substrate including a plurality of pixel areas; a pixel electrode on the substrate; an opposite electrode on the pixel electrode, the opposite electrode transmitting light; an organic light emitting layer between the pixel electrode and the opposite electrode, the organic light emitting layer emitting a first light toward the opposite electrode; a light emitting layer on the opposite electrode, the light emitting layer absorbing a portion of the first light and emitting a second light; and a sealing layer on the light emitting layer, the sealing layer sealing the pixel electrode, the opposite electrode, the organic light emitting layer, and the light emitting layer.
    Type: Application
    Filed: November 5, 2015
    Publication date: February 25, 2016
    Inventors: Chi-O CHO, Byungchoon YANG, Young-Jun SEO, WonSang PARK
  • Publication number: 20150356902
    Abstract: A method of compensating color of a transparent display device includes generating a first pixel data by adding an input image pixel data and an external optical data which represents an effect of an external light on the transparent display device, generating a second pixel data having the same color as the input image pixel data by scaling the first pixel data, and generating an output image pixel data by subtracting the external optical data from the second pixel data.
    Type: Application
    Filed: October 29, 2014
    Publication date: December 10, 2015
    Inventors: Young-Jun SEO, Byung-Choon YANG, Chi-O CHO
  • Patent number: 9184403
    Abstract: An organic light emitting display apparatus including a substrate including a plurality of pixel areas; a pixel electrode on the substrate; an opposite electrode on the pixel electrode, the opposite electrode transmitting light; an organic light emitting layer between the pixel electrode and the opposite electrode, the organic light emitting layer emitting a first light toward the opposite electrode; a light emitting layer on the opposite electrode, the light emitting layer absorbing a portion of the first light and emitting a second light; and a sealing layer on the light emitting layer, the sealing layer sealing the pixel electrode, the opposite electrode, the organic light emitting layer, and the light emitting layer.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: November 10, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chi-O Cho, Byungchoon Yang, Young-Jun Seo, WonSang Park
  • Publication number: 20150115217
    Abstract: An organic light emitting display apparatus including a substrate including a plurality of pixel areas; a pixel electrode on the substrate; an opposite electrode on the pixel electrode, the opposite electrode transmitting light; an organic light emitting layer between the pixel electrode and the opposite electrode, the organic light emitting layer emitting a first light toward the opposite electrode; a light emitting layer on the opposite electrode, the light emitting layer absorbing a portion of the first light and emitting a second light; and a sealing layer on the light emitting layer, the sealing layer sealing the pixel electrode, the opposite electrode, the organic light emitting layer, and the light emitting layer.
    Type: Application
    Filed: July 30, 2014
    Publication date: April 30, 2015
    Inventors: Chi-O CHO, Byungchoon YANG, Young-Jun SEO, WonSang PARK
  • Publication number: 20140362556
    Abstract: A quantum rod sheet includes: a first support layer including a plurality of grooves which extends substantially in a predetermined direction; a plurality of quantum rods arranged substantially in the predetermined direction along the grooves of the first support layer; and a second support layer which covers the first support layer and the quantum rods.
    Type: Application
    Filed: June 11, 2014
    Publication date: December 11, 2014
    Inventors: Chi-O CHO, Dong Hoon KIM, Sang Woo HA