Abstract: The present specification provides a heating system including: a heating unit including a substrate and a heating layer provided on the substrate and including graphene; an electromagnetic wave irradiation unit configured to irradiate at least one region of the heating unit with electromagnetic waves; and a control unit configured to control an operation of the electromagnetic wave irradiation unit, wherein the heating layer emits heat by absorbing the electromagnetic waves.
Type:
Grant
Filed:
August 14, 2017
Date of Patent:
October 1, 2024
Assignees:
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE INC.
Inventors:
Byung Hee Hong, Sang Min Kang, Young Soo Kim
Abstract: A method of evaluating quality of graphene using a confocal laser scanning microscope, the method comprising steps of: irradiating with laser light a graphene layer formed on a catalyst layer; detecting a signal of light reflected from the graphene layer; forming a planar image of the graphene layer using the detected optical signal; and analyzing a contrast between graphene and the catalyst layer in the planar image, wherein the graphene layer is continuously formed on the catalyst layer by a roll-to-roll process.
Type:
Grant
Filed:
October 14, 2021
Date of Patent:
March 19, 2024
Assignees:
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE INC., Dankook University Cheonan Campus Industry Academic Cooperation Foundation
Inventors:
Byung Hee Hong, Dong Jin Kim, Yun Sung Woo
Abstract: The present specification provides a functional contact lens including: a lens substrate having a spherically curved surface so as to be worn on an eyeball; and a functional layer provided on at least one surface of the lens substrate and including a graphene sheet, and a method for manufacturing the same.
Type:
Grant
Filed:
August 14, 2017
Date of Patent:
March 12, 2024
Assignees:
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE INC.
Inventors:
Byung Hee Hong, Sangkyu Lee, Insu Jo, Sangmin Kang
Abstract: The present disclosure provides an electrode structure including a metal thin film and a patterned graphene-graphitic carbon composite layer disposed on the metal thin film, a method for fabricating the electrode structure using laser printing, and an electrochemical device including the same.
Type:
Grant
Filed:
June 1, 2018
Date of Patent:
December 12, 2023
Assignees:
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE, INC.
Inventors:
Byung Hee Hong, Sang Min Kang, Quang Trung Truong
Abstract: A method for shielding electromagnetic waves by using grapheme formed on inside or outside a device having an electromagnetic wave generating source and/or by using graphene formed on a substrate, an electromagnetic shielding material and film including the graphene, and an electronic or electric device including the electromagnetic wave shielding film.
Type:
Grant
Filed:
July 2, 2018
Date of Patent:
July 20, 2021
Assignee:
Graphene Square Inc.
Inventors:
Byung Hee Hong, Jea-Boong Choi, Young Jin Kim, Hyeongkeun Kim, Sukang Bae, Junmo Kang
Abstract: The present disclosure relates to a manufacturing method of a graphene fiber, a graphene fiber manufactured by the same method, and use thereof. The graphene fiber formed by using graphenes of linear pattern can be applied to various fields such as an electric wire and coaxial cable.
Type:
Grant
Filed:
August 8, 2012
Date of Patent:
March 16, 2021
Assignee:
GRAPHENE SQUARE INC.
Inventors:
Byung Hee Hong, Keun Soo Kim, Hyeong Keun Kim, Su Kang Bae
Abstract: The present invention relates to a method for forming a graphene protective film having gas and moisture barrier properties, to a graphene protective film formed by the method, and to the use thereof. A single-layer or multilayer graphene protective film can be used as a material for a barrier coating or bags, and improves the gas and moisture barrier properties of a variety of devices in a wide array of industrial fields to thereby maintain the electrical characteristics of devices over a long period of time.
Type:
Grant
Filed:
July 13, 2012
Date of Patent:
January 5, 2021
Assignee:
Graphene Square, Inc.
Inventors:
Jonghyun Ahn, Byung Hee Hong, Youngbin Lee, Hyeong Keun Kim, Su Kang Bae
Abstract: Disclosed is an apparatus and method of manufacturing a graphene film, wherein the apparatus includes a wrinkle flattening device configured to flatten wrinkles in a lamination structure including a base substrate and a graphene film laminated on the base substrate; and a first lamination apparatus configured to laminate a first substrate on the graphene film, wherein the wrinkle flattening device applies a vacuum to the base substrate when the wrinkle flattening device is in contact with the base substrate.
Type:
Grant
Filed:
May 9, 2016
Date of Patent:
February 5, 2019
Assignee:
Graphene Square, Inc.
Inventors:
Wan Soo Kim, Jung Hee Han, Byung Hee Hong
Abstract: A patterning method of a graphene, including a step of forming a graphene layer on a polymer substrate; and a step of forming a nanopattern in the graphene layer by hot embossing imprinting. The step of forming a nanopattern in the graphene layer by hot embossing imprinting includes contacting a hot mold, in which a nanopattern is formed, or contacting a roll-to-roll hot mold, in which a nanopattern is formed, to the graphene layer, followed by heating and pressing the graphene layer. In the step of forming a nanopattern in the graphene layer, the graphene layer is cleaved by a protrusion of the nanopattern formed on the hot mold or the hot roll-to-roll mold, and the cleaved graphene is present on each of a protrusion and a recessed portion of the nanopattern formed in the polymer substrate under the graphene later.
Abstract: The present disclosure relates to a graphene roll-to-roll transfer method, a graphene roll-to-roll transfer apparatus, a graphene roll manufactured by the graphene roll-to-roll transfer method, and uses thereof.
Abstract: The present disclosure relates to a variable focus lens containing graphene, a preparing method of the variable focus lens, a focus controlling method of the variable focus lens, and a display device including the variable focus lens.
Type:
Grant
Filed:
March 19, 2014
Date of Patent:
August 8, 2017
Assignees:
Graphene Square, Inc., SNU R&DB Foundation
Abstract: Disclosed is an apparatus and method of manufacturing a graphene film, wherein the apparatus includes a wrinkle flattening device configured to flatten wrinkles in a lamination structure including a base substrate and a graphene film laminated on the base substrate; and a first lamination apparatus configured to laminate a first substrate on the graphene film, wherein the wrinkle flattening device applies a vacuum to the base substrate when the wrinkle flattening device is in contact with the base substrate.
Type:
Application
Filed:
May 9, 2016
Publication date:
February 2, 2017
Applicant:
Graphene Square, Inc.
Inventors:
Wan Soo KIM, Jung Hee HAN, Byung Hee HONG
Abstract: The present invention relates to a method for forming graphene at a low temperature, to a method for direct transfer of graphene using same, and to a graphene sheet. The method for forming graphene at a low temperature comprises supplying a carbon-source-containing gas to a metal catalyst layer for graphene growth formed on a substrate, and forming graphene at a low temperature of 500° C. or less by means of inductively coupled plasma-chemical vapor deposition (ICP-CVD).
Abstract: A touch sensor capable of specifying a touch position and/or a degree of a touch pressure by using graphene as an electrode and/or a strain gauge, and more particular, a touch sensor capable of simultaneously detecting a pressure and a position by means of change in resistance by using graphene is provided.
Type:
Grant
Filed:
December 23, 2011
Date of Patent:
March 29, 2016
Assignee:
Graphene Square, Inc.
Inventors:
Jong-Hyun Ahn, Byung Hee Hong, Young Bin Lee, Su Kang Bae, Hyeong Keun Kim