Patents by Inventor Hyun-Woo Koo

Hyun-Woo Koo 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).

  • Publication number: 20160216737
    Abstract: A display device includes a first body including a first internal space and a first opening at a first side of the first body, a second body including a second internal space and a second opening at a first side of the second body, the second opening facing the first opening, a flexible display panel to display images, the flexible display panel having a changeable display area in accordance with a distance between the first and second bodies, and an arm assembly including a plurality of connecting arms supporting the first and second bodies, the plurality of connecting arms being rotatably coupled to the first and second bodies.
    Type: Application
    Filed: December 8, 2015
    Publication date: July 28, 2016
    Inventors: Khachatryan HAYK, Hyun Woo KOO, Tae Woong KIM
  • Publication number: 20160211350
    Abstract: A method of manufacturing a flexible display device, the method including forming a sacrificial layer on a carrier substrate such that the sacrificial layer includes a hydrogen trap material and amorphous silicon; forming a support layer and a thin film transistor on the sacrificial layer; and separating the support layer from the carrier substrate by irradiating a laser to the sacrificial layer.
    Type: Application
    Filed: July 28, 2015
    Publication date: July 21, 2016
    Inventors: Hyun Woo KOO, Ki Hyun KIM, Sun Ho KIM, Jeong ho KIM
  • Publication number: 20150187849
    Abstract: In a method of manufacturing a flexible substrate, a preliminary sacrificial layer that includes polyimide is formed on a carrier substrate. The preliminary sacrificial layer is transformed into a sacrificial layer that includes a modified polyimide. A base substrate layer that includes polyimide is formed on the sacrificial layer. A device structure is formed on the base substrate layer. A combination of the base substrate layer and the device structure is separated from the carrier substrate.
    Type: Application
    Filed: October 22, 2014
    Publication date: July 2, 2015
    Inventors: Hayk KACHATRYAN, Hyun-Woo KOO, Kyung-Min CHOI
  • Publication number: 20150179722
    Abstract: An organic light emitting display device includes: a curved organic light emitting display panel. The organic light emitting display panel includes a flexible substrate, a thin film transistor layer including a semiconductor layer, and an organic light emission layer including an organic light emitting material. In the curved organic light emitting display panel, the thin film transistor layer receives a compressive stress, or a neutral plane in which the compressive stress and a tensile stress maintain equilibrium is defined in the thin film transistor layer.
    Type: Application
    Filed: October 16, 2014
    Publication date: June 25, 2015
    Inventors: Hyun Woo KOO, Tae Woong KIM, Young Gug SEOL
  • Publication number: 20150084003
    Abstract: An organic light emitting diode (OLED) display, including a flexible substrate bent in a first direction, an OLED arranged on the flexible substrate, a first thin film transistor connected to the OLED and including a first channel area extending in a second direction crossing the first direction, and one or more additional thin film transistors connected to the first thin film transistor and including corresponding additional channel areas extending in the second direction.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 26, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Tae-Woong KIM, Hyun-Woo KOO, Young-Gug SEOL, Young-Ki HONG, Won-Kyu KWAK, Yang-Wan KIM, Han-Sung BAE
  • Publication number: 20150072454
    Abstract: A method of manufacturing a display panel is provided. A release layer is formed on a support substrate. A thin film substrate is formed on the release layer and the support substrate. A pixel and an encapsulation member are formed on a part of the thin film substrate. The part of the thin film substrate is overlapped with the release layer. The part of the thin film substrate is separated from the support substrate. The release layer includes siloxane and polyimide silane.
    Type: Application
    Filed: June 5, 2014
    Publication date: March 12, 2015
    Inventors: Tae Woong KIM, Hyung Sik KIM, Hyun Woo KOO, Woo Jeong JANG, Ki-Yong LEE
  • Publication number: 20150047468
    Abstract: A method of manufacturing silver nanowires includes: forming a first solution including a dispersion stabilizer and a polyol; forming a second solution including a dispersion stabilizer, a silver precursor, a halogen-ion donor, deionized water, and the polyol; forming a third solution by adding the second solution to the first solution; heating the third solution from a first temperature to a second temperature; and forming silver nanowires by maintaining the third solution at the second temperature.
    Type: Application
    Filed: March 4, 2014
    Publication date: February 19, 2015
    Applicants: Korea Advanced Institute of Science and Technology, Samsung Display Co., Ltd.
    Inventors: Hyun-Woo KOO, Tae-Woong KIM, Jung-Yong LEE, Jaemin LEE, Seonju JEONG
  • Publication number: 20150041769
    Abstract: A display device is disclosed. In one aspect, the display device includes a flexible substrate capable of being bent in a first direction and an insulating layer including a first opening pattern positioned on the flexible substrate and extending in a second direction crossing the first direction.
    Type: Application
    Filed: January 17, 2014
    Publication date: February 12, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Tae Woong Kim, Hyun Woo Koo, Young Gug Seol
  • Publication number: 20140363567
    Abstract: A method of fabricating a metal nanowire dispersion solution includes heating a first solution including a metal compound, a catalyst, an organic protection agent and menstruum, thereby forming metal nanowires in the first solution, performing a first cleaning process providing a first solvent into the metal nanowire, thereby separating the organic protection agent surrounding the metal nanowires from the metal nanowires, separating the metal nanowires from the first solution by vacuum-filtering, and dispersing the separated metal nanowires in a dispersion solvent.
    Type: Application
    Filed: December 23, 2013
    Publication date: December 11, 2014
    Applicants: Korea Advanced Institute of Science and Technology, Samsung Display Co., Ltd.
    Inventors: Hyun Woo KOO, Tae Woong KIM, Jung Yong LEE, Jae Min LEE
  • Publication number: 20140305180
    Abstract: Provided are a bending apparatus and a bending method. According to an aspect of the present invention, there is provided a bending apparatus including a guide portion configured to guide a movement and a bending of a flexible substrate so that the flexible substrate is bent and moved, a first fastening portion configured to fix one side of the flexible substrate that is bent along the guide portion, a second fastening portion configured to fix an other side of the flexible substrate, and a driving portion configured to move at least one of the first fastening portion and the second fastening portion.
    Type: Application
    Filed: August 29, 2013
    Publication date: October 16, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Woong Kim, Young Ki Hong, Hyun Woo Koo, Young Gug Seol
  • Publication number: 20140146279
    Abstract: An anti-scratch film, including a film base and an anti-scratch layer on one side of the film base. The anti-scratch layer includes a plurality of protrusions.
    Type: Application
    Filed: August 27, 2013
    Publication date: May 29, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae-Woong Kim, Hyun-Woo Koo, Young-Gug Seol, Patrick Lee
  • Publication number: 20130248891
    Abstract: An organic light emitting display device and a method of manufacturing the same are proposed. The organic light emitting display device includes: a first film formed of an organic material, and having first and second surfaces facing each other and a third surface perpendicular to the first and second surfaces; a second film formed on the first film to cover the second and third surfaces of the first film; an organic light emitting unit disposed on the second film; a third film disposed on the second film to cover the organic light emitting unit; and a fourth film disposed on the third film, formed of an organic material, and having fourth and fifth surfaces facing each other, wherein the fifth surface faces the third film.
    Type: Application
    Filed: September 11, 2012
    Publication date: September 26, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae-Woong Kim, Hyun-Woo Koo, Hyung-Sik Kim
  • Patent number: 8389983
    Abstract: An organic light emitting apparatus and a method of manufacturing the organic light emitting apparatus. According to the organic light emitting apparatus and the method of manufacturing the organic light emitting apparatus, the characteristics of a barrier layer are maintained and a stress of a substrate is reduced, even at a high temperature, thereby increasing the manufacturing stability of the organic light emitting apparatus.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: March 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Joon Seo, Kie-Hyun Nam, Sung-Guk An, Jung-Woo Moon, Hyun-Woo Koo, Jin-O Lim
  • Patent number: 8384087
    Abstract: A thin film transistor includes a substrate, a buffer layer on the substrate, a semiconductor layer including source/drain regions and a channel region on the buffer layer, a gate insulating layer corresponding to the channel region, a gate electrode corresponding to the channel region, and source/drain electrodes electrically connected to the semiconductor layer. A polysilicon layer of the channel region may include only a low angle grain boundary, and a high angle grain boundary may be disposed in a region of the semiconductor layer that is apart from the channel region.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: February 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Duck Son, Ki-Yong Lee, Joon-Hoo Choi, Min-Jae Jeong, Seung-Kyu Park, Kil-Won Lee, Jae-Wan Jung, Dong-Hyun Lee, Byung-Soo So, Hyun-Woo Koo, Ivan Maidanchuk, Jong-Won Hong, Heung-Yeol Na, Seok-Rak Chang
  • Publication number: 20110156062
    Abstract: An organic light-emitting display device and a method of manufacturing the same. The organic light-emitting display device includes a first film formed of an inorganic material, a second film that is formed of an organic material and formed on the first film, and includes a first surface and a second surface facing each other and lateral surfaces at boundaries of the first surface and the second surface, with the first surface contacting the first film, a third film that is formed of an inorganic material and covers the second surface and lateral surfaces of the second film, with a first sealing region contacting the first film being formed at a boundary between the second film and the third film, an organic light-emitting unit that is disposed on the third film to overlap with the second film, and a fourth film that covers the organic light-emitting unit, with a second sealing region contacting the third film being formed at a boundary of the fourth film.
    Type: Application
    Filed: October 29, 2010
    Publication date: June 30, 2011
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Tae-Woong Kim, Sung-Guk An, Hyung-Sik Kim, Hyun-Woo Koo, Dong-Gun Jin, Sang-Joon Seo
  • Publication number: 20110140164
    Abstract: An organic light emitting apparatus and a method of manufacturing the organic light emitting apparatus. According to the organic light emitting apparatus and the method of manufacturing the organic light emitting apparatus, the characteristics of a barrier layer are maintained and a stress of a substrate is reduced, even at a high temperature, thereby increasing the manufacturing stability of the organic light emitting apparatus.
    Type: Application
    Filed: September 24, 2010
    Publication date: June 16, 2011
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Sang-Joon Seo, Kie-Hyun Nam, Sung-Guk An, Jung-Woo Moon, Hyun-Woo Koo, Jin-O Lim
  • Publication number: 20110114963
    Abstract: A thin film transistor includes a substrate, a buffer layer on the substrate, a semiconductor layer including source/drain regions and a channel region on the buffer layer, a gate insulating layer corresponding to the channel region, a gate electrode corresponding to the channel region, and source/drain electrodes electrically connected to the semiconductor layer. A polysilicon layer of the channel region may include only a low angle grain boundary, and a high angle grain boundary may be disposed in a region of the semiconductor layer that is apart from the channel region.
    Type: Application
    Filed: August 27, 2010
    Publication date: May 19, 2011
    Inventors: Yong-Duck Son, Ki-Yong Lee, Joon-Hoo Choi, Min-Jae Jeong, Seung-Kyu Park, Kil-Won Lee, Jae-Wan Jung, Dong-Hyun Lee, Byung-Soo So, Hyun-Woo Koo, Ivan Maidanchuk, Jong-Won Hong, Heung-Yeol Na, Seok-Rak Chang
  • Publication number: 20110111186
    Abstract: Disclosed are an inorganic layer which is formed on one side or both sides of a substrate and has at least a portion irradiated with a laser, a display device including the inorganic layer, and a manufacturing method thereof.
    Type: Application
    Filed: May 24, 2010
    Publication date: May 12, 2011
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Kie Hyun Nam, Hyun-Woo Koo, Sang-Joon Seo, Jung-Woo Moon, Hyung-Sik Kim
  • Publication number: 20090298211
    Abstract: A method for manufacturing a flexible display is provided. A sacrificial layer is formed on a substrate support, the sacrificial layer having an absorptivity of 1 E+02 to 1 E+06 cm?1 as a function of the wavelength of a laser. A flexible substrate is formed on the sacrificial layer. A device is formed on the flexible substrate. Laser irradiating is performed on a rear of the substrate support for detaching the sacrificial layer from the flexible substrate.
    Type: Application
    Filed: March 4, 2009
    Publication date: December 3, 2009
    Inventors: Tae-Woong Kim, Dong-Un Jin, Hyung-Sik Kim, Hyun-Woo Koo, Hyun-Chul Lee, Yeon-Gon Mo