Patents by Inventor Kyung-Hoe Heo

Kyung-Hoe Heo 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: 10456939
    Abstract: A cell cutting device that cuts a mother substrate for display devices includes a fixing unit configured to move in a state where the mother substrate for display devices is fixed on the fixing unit, a cutter configured to perform a cutting process on the mother substrate for display devices and the cutter faces a surface of the mother substrate during the cutting process, a cutter driving unit driving the cutter in a state where the cutter is fixed thereon, and a buffer member arranged on another surface of the mother substrate to correspond to the cutter. The other surface is opposite the surface facing the cutter.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 29, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyung-Hoe Heo, Seung-Jun Lee
  • Publication number: 20180133914
    Abstract: A cell cutting device that cuts a mother substrate for display devices includes a fixing unit configured to move in a state where the mother substrate for display devices is fixed on the fixing unit, a cutter configured to perform a cutting process on the mother substrate for display devices and the cutter faces a surface of the mother substrate during the cutting process, a cutter driving unit driving the cutter in a state where the cutter is fixed thereon, and a buffer member arranged on another surface of the mother substrate to correspond to the cutter. The other surface is opposite the surface facing the cutter.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: Kyung-Hoe HEO, Seung-Jun LEE
  • Patent number: 9931757
    Abstract: A cell cutting device that cuts a mother substrate for display devices includes a fixing unit configured to move in a state where the mother substrate for display devices is fixed on the fixing unit, a cutter configured to perform a cutting process on the mother substrate for display devices and the cutter faces a surface of the mother substrate during the cutting process, a cutter driving unit driving the cutter in a state where the cutter is fixed thereon, and a buffer member arranged on another surface of the mother substrate to correspond to the cutter. The other surface is opposite the surface facing the cutter.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: April 3, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyung-Hoe Heo, Seung-Jun Lee
  • Patent number: 9464991
    Abstract: A method for inspecting a polysilicon layer includes: radiating excitation light to the polysilicon layer; and detecting a photoluminescence signal generated by the excitation light, wherein average power of the excitation light has a range of 1 W/cm2 to 10 W/cm2, and peak power of the excitation light has a range of 100 W/cm2 to 1000 W/cm2.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: October 11, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Alexander Voronov, Suk-Ho Lee, Jae-Seung Yoo, Kyung-Hoe Heo, Gyoo-Wan Han
  • Patent number: 9140742
    Abstract: A method of measuring conductivity of a silicon thin film is provided. By the method, a capacitive sensor is positioned over a silicon thin film sample with an air-gap between the sensor and the sample, a size of the air-gap is measured using the capacitive sensor while an excitation light source module is turned off, an excitation light is illuminated on the silicon thin film sample by turning on the excitation light source module, where the excitation light is an ultraviolet light, a conductivity change of the silicon thin film sample is measured using the capacitive sensor, and a measurement error due to a deviation of the air-gap is eliminated by normalizing the conductivity change based on a measurement result of the size of the air-gap.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: September 22, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Alexander Voronov, Seok-Ho Lee, Ji-Hunny Jung, Kyung-Hoe Heo, Gyoo-Wan Han
  • Patent number: 9010398
    Abstract: A carrier substrate removing apparatus configured to separate a flexible substrate bonded to a carrier substrate includes a carrier substrate holding unit configured to hold the carrier substrate separated from the flexible substrate; an inclined separation unit configured, with the carrier substrate holding unit, to separate the flexible substrate from the carrier substrate and to transport the flexible substrate at an angle; and a transmittance measuring unit configured to measure a transmittance of the separated carrier substrate.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Keon Kweon, Kyung-Hoe Heo, Ki-Taek Kim
  • Publication number: 20140353523
    Abstract: A method for inspecting a polysilicon layer includes: radiating excitation light to the polysilicon layer; and detecting a photoluminescence signal generated by the excitation light, wherein average power of the excitation light has a range of 1 W/cm2 to 10 W/cm2, and peak power of the excitation light has a range of 100 W/cm2 to 1000 W/cm2.
    Type: Application
    Filed: December 2, 2013
    Publication date: December 4, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Alexander VORONOV, Suk-Ho LEE, Jae-Seung YOO, Kyung-Hoe HEO, Gyoo-Wan HAN
  • Publication number: 20140138032
    Abstract: A carrier substrate removing apparatus configured to separate a flexible substrate bonded to a carrier substrate includes a carrier substrate holding unit configured to hold the carrier substrate separated from the flexible substrate; an inclined separation unit configured, with the carrier substrate holding unit, to separate the flexible substrate from the carrier substrate and to transport the flexible substrate at an angle; and a transmittance measuring unit configured to measure a transmittance of the separated carrier substrate.
    Type: Application
    Filed: March 5, 2013
    Publication date: May 22, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin-Keon Kweon, Kyung-Hoe Heo, Ki-Taek Kim
  • Patent number: 8717555
    Abstract: A device for inspecting a polycrystalline silicon layer that is crystallized by receiving irradiated laser beams on a front side of the polycrystalline silicon layer includes: a light source configured to emit inspection beams to a rear side of the polycrystalline silicon layer; a light inspector configured to inspect the inspection beams reflected at the rear side of the polycrystalline silicon layer; and a controller that controls the light source and the light inspector.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: May 6, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Alexander Voronov, Suk-Ho Lee, Jae-Seung Yoo, Kyung-Hoe Heo, Gyoo-Wan Han
  • Publication number: 20140020542
    Abstract: A cell cutting device that cuts a mother substrate for display devices includes a fixing unit configured to move in a state where the mother substrate for display devices is fixed on the fixing unit, a cutter configured to perform a cutting process on the mother substrate for display devices and the cutter faces a surface of the mother substrate during the cutting process, a cutter driving unit driving the cutter in a state where the cutter is fixed thereon, and a buffer member arranged on another surface of the mother substrate to correspond to the cutter. The other surface is opposite the surface facing the cutter.
    Type: Application
    Filed: November 29, 2012
    Publication date: January 23, 2014
    Inventors: Kyung-Hoe HEO, Seung-Jun LEE
  • Publication number: 20130265078
    Abstract: A method of measuring conductivity of a silicon thin film is provided. By the method, a capacitive sensor is positioned over a silicon thin film sample with an air-gap between the sensor and the sample, a size of the air-gap is measured using the capacitive sensor while an excitation light source module is turned off, an excitation light is illuminated on the silicon thin film sample by turning on the excitation light source module, where the excitation light is an ultraviolet light, a conductivity change of the silicon thin film sample is measured using the capacitive sensor, and a measurement error due to a deviation of the air-gap is eliminated by normalizing the conductivity change based on a measurement result of the size of the air-gap.
    Type: Application
    Filed: February 13, 2013
    Publication date: October 10, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Alexander Voronov, Seok-Ho Lee, Ji-Hunny Jung, Kyung-Hoe Heo, Gyoo-Wan Han
  • Publication number: 20120057148
    Abstract: A device for inspecting a polycrystalline silicon layer that is crystallized by receiving irradiated laser beams on a front side of the polycrystalline silicon layer includes: a light source configured to emit inspection beams to a rear side of the polycrystalline silicon layer; a light inspector configured to inspect the inspection beams reflected at the rear side of the polycrystalline silicon layer; and a controller that controls the light source and the light inspector.
    Type: Application
    Filed: August 22, 2011
    Publication date: March 8, 2012
    Inventors: Alexander VORONOV, Suk-Ho Lee, Jae-Seung Yoo, Kyung-Hoe Heo, Gyoo-Wan Han