Patents by Inventor Se-Jun Cho

Se-Jun 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: 10418429
    Abstract: An organic light emitting display device includes a substrate including a plurality of pixels defined thereon; a first electrode disposed at each pixel; a bank exposing the first electrode of each pixel; a spacer including, sequentially on the bank, a first layer of a first negative photoreactive acryl and a second layer of a second negative photoreactive acryl having a greater photoreactivity than a photoreactivity of the first negative photoreactive acryl, wherein the first layer has a negative taper and the second layer has a positive taper; an organic layer on the bank and the first electrode, the organic layer including an organic light emitting layer; and a second electrode on the bank, the spacer, and the organic layer.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: September 17, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Seong Kim, Joung-Woo Lee, Se-Jun Cho, Seung-Hee Kuk
  • Publication number: 20180323245
    Abstract: An organic light emitting display device includes a substrate including a plurality of pixels defined thereon; a first electrode disposed at each pixel; a bank exposing the first electrode of each pixel; a spacer including, sequentially on the bank, a first layer of a first negative photoreactive acryl and a second layer of a second negative photoreactive acryl having a greater photoreactivity than a photoreactivity of the first negative photoreactive acryl, wherein the first layer has a negative taper and the second layer has a positive taper; an organic layer on the bank and the first electrode, the organic layer including an organic light emitting layer; and a second electrode on the bank, the spacer, and the organic layer.
    Type: Application
    Filed: July 16, 2018
    Publication date: November 8, 2018
    Applicant: LG Display Co., Ltd.
    Inventors: Mi-Seong Kim, Joung-Woo Lee, Se-Jun Cho, Seung-Hee Kuk
  • Patent number: 10026791
    Abstract: An organic light emitting display device includes a substrate including a plurality of pixels defined thereon; a first electrode disposed at each pixel; a bank exposing the first electrode of each pixel; a spacer including, sequentially on the bank, a first layer of a first negative photoreactive acryl and a second layer of a second negative photoreactive acryl having a greater photoreactivity than a photoreactivity of the first negative photoreactive acryl, wherein the first layer has a negative taper and the second layer has a positive taper; an organic layer on the bank and the first electrode, the organic layer including an organic light emitting layer; and a second electrode on the bank, the spacer, and the organic layer.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 17, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Seong Kim, Joung-Woo Lee, Se-Jun Cho, Seung-Hee Kuk
  • Patent number: 9871085
    Abstract: Disclosed is an organic light-emitting diode display panel, which may effectively reduce or prevent spreading of the peeling of an organic light-emitting layer by using a bar-shaped reversed spacer, regardless of the direction in which the organic layer peels off. The organic light-emitting diode display panel may include a reversed spacer, which is disposed on a bank insulation layer having an opening and includes a reversed-trapezoidal cross section, the reversed spacer having a bar shape when viewed from the front side of the organic light-emitting diode display panel.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: January 16, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Se-Jun Cho, Joung-Woo Lee, Seung-Hee Kuk, Mi-Seong Kim
  • Publication number: 20170194399
    Abstract: Disclosed is an organic light-emitting diode display panel, which may effectively reduce or prevent spreading of the peeling of an organic light-emitting layer by using a bar-shaped reversed spacer, regardless of the direction in which the organic layer peels off. The organic light-emitting diode display panel may include a reversed spacer, which is disposed on a bank insulation layer having an opening and includes a reversed-trapezoidal cross section, the reversed spacer having a bar shape when viewed from the front side of the organic light-emitting diode display panel.
    Type: Application
    Filed: December 30, 2016
    Publication date: July 6, 2017
    Inventors: Se-Jun CHO, Joung-Woo LEE, Seung-Hee KUK, Mi-Seong KIM
  • Publication number: 20170194398
    Abstract: An organic light emitting display device includes a substrate including a plurality of pixels defined thereon; a first electrode disposed at each pixel; a bank exposing the first electrode of each pixel; a spacer including, sequentially on the bank, a first layer of a first negative photoreactive acryl and a second layer of a second negative photoreactive acryl having a greater photoreactivity than a photoreactivity of the first negative photoreactive acryl, wherein the first layer has a negative taper and the second layer has a positive taper; an organic layer on the bank and the first electrode, the organic layer including an organic light emitting layer; and a second electrode on the bank, the spacer, and the organic layer.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 6, 2017
    Applicant: LG Display Co., Ltd.
    Inventors: Mi-Seong Kim, Joung-Woo Lee, Se-Jun Cho, Seung-Hee Kuk
  • Patent number: 9280007
    Abstract: A method of manufacturing a flexible display device includes forming a buffer layer on a base substrate, wherein the buffer layer is transparent and has a optical bandgap of about 3.0 eV to about 4.0 eV; forming a flexible substrate on the buffer layer; forming display elements on the flexible substrate; and irradiating a laser to the buffer layer to detach the flexible substrate from the base substrate.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: March 8, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Tae-Youn Kim, Sang-Soo Kim, Se-Jun Cho
  • Publication number: 20130020731
    Abstract: A method of manufacturing a flexible display device includes forming a buffer layer on a base substrate, wherein the buffer layer is transparent and has a optical bandgap of about 3.0 eV to about 4.0 eV; forming a flexible substrate on the buffer layer; forming display elements on the flexible substrate; and irradiating a laser to the buffer layer to detach the flexible substrate from the base substrate.
    Type: Application
    Filed: July 17, 2012
    Publication date: January 24, 2013
    Inventors: Tae-Youn Kim, Sang-Soo Kim, Se-Jun Cho