Patents by Inventor Hyung-Min Cha

Hyung-Min Cha 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: 10479912
    Abstract: The embodiment examples of the present invention relate to a double-sided adhesive sheet and a display device for a touch panel including the same. The double-sided adhesive sheet, according to the embodiment examples of the present invention, comprises a transparent acryl-based resin layer as a substrate, can provide a double-sided adhesive sheet which can be detached and recycled after attaching to the touch panel and a display device module, by means of the adhesive agent layers that are formed on both sides having different detaching force, can improve visibility of the display device by being coupled between the touch panel and the display device module for eliminating an air gap, and can minimize the difference in the bending rate of each layer of the double-sided adhesive sheet for eliminating visibility exhaustion as much as possible.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: November 19, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jang-Soon Kim, James Jung, Sang-Hun Choi, Young-Myung Gee, Hyung-Min Cha, No-Woong Park, Se-Hee Park, Hyun-Ju Cho
  • Publication number: 20130241862
    Abstract: The embodiment examples of the present invention relate to a double-sided adhesive sheet and a display device for a touch panel including the same. The double-sided adhesive sheet, according to the embodiment examples of the present invention, comprises a transparent acryl-based resin layer as a substrate, can provide a double-sided adhesive sheet which can be detached and recycled after attaching to the touch panel and a display device module, by means of the adhesive agent layers that are formed on both sides having different detaching force, can improve visibility of the display device by being coupled between the touch panel and the display device module for eliminating an air gap, and can minimize the difference in the bending rate of each layer of the double-sided adhesive sheet for eliminating visibility exhaustion as much as possible.
    Type: Application
    Filed: November 11, 2011
    Publication date: September 19, 2013
    Applicant: LG HAUSYS, LTD.
    Inventors: Jang-Soon Kim, James Jung, Sang-Hun Choi, Young-Myung Gee, Hyung-Min Cha, No-Woong Park, Se-Hee Park, Hyun-Ju Cho
  • Publication number: 20130236672
    Abstract: The present invention relates to an adhesive composition for a touch panel, an adhesive film, and a touch panel. The adhesive composition for the touch panel of the present invention is applied to the touch panel, for example, to an electrostatic capacitance-type touch panel, for hiding the pattern of a conductive layer even when being coupled to the conductive layer formed with the pattern. Also, the adhesive composition of the present invention can prevent yellowing and whitening.
    Type: Application
    Filed: November 24, 2011
    Publication date: September 12, 2013
    Applicant: LG HAUSYS, LTD
    Inventors: Jang-Soon Kim, Min-Seok Song, Eun-Kyung Park, Seong-Jin Kim, Hyung-Min Cha, Won-Yup Lee, Woong-Gi Kim
  • Publication number: 20130236674
    Abstract: The present invention relates to an adhesive composition for a touch panel, an adhesive film, and a touch panel. When coupled to the touch panel, for example, to a conductive layer and to a hard coating surface of an electrostatic capacitive touch panel, the present invention has superior durability, such as resistance to peeling, detaching, or air bubbles under high-temperature and high-humidity conditions, and can provide an adhesive composition or adhesive agent also having superior workability, wettability, and adhesion to various objects to be adhered.
    Type: Application
    Filed: November 14, 2011
    Publication date: September 12, 2013
    Applicant: LG Hausys, Ltd.
    Inventors: Jang-Soon Kim, Min-Seok Song, Eun-Kyung Park, Seong-Jin Kim, Hyung-Min Cha, Won-Yup Lee, Woong-Gi Kim
  • Publication number: 20130236673
    Abstract: The present invention relates to an adhesive composition for a touch panel, and adhesive film, and to a touch panel. When the adhesive composition of the present invention is applied to the touch panel, for example, to an electrostatic capacitance-type touch panel, the present invention has superior durability under high-temperature and high-humidity conditions and superior wettability and adhesiveness to various objects to be adhered, and can provide the adhesive composition and the adhesive film having excellent durability to chemicals, such as resistance to sebum.
    Type: Application
    Filed: November 18, 2011
    Publication date: September 12, 2013
    Applicant: LG HAUSYS, LTD,
    Inventors: Jang Soon Kim, Min-Seok Song, Eun-Kyung Park, Seong-Jin Kim, Hyung-Min Cha, won-Yup Lee, Woong-Gi Kim
  • Publication number: 20100003505
    Abstract: Disclosed herein is a waterproof sheet. More specifically, disclosed herein is a waterproof sheet with improved water resistance, airtightness and durability by which the waterproof sheet is produced by adhering a polyvinylchloride (PVC) alloy sheet as an plastic sheet to the at least one surface of a polyester film as an intermediate.
    Type: Application
    Filed: December 27, 2006
    Publication date: January 7, 2010
    Inventors: Chan-Oh Yoon, Jong-Cheol Lee, Hyung-Min Cha
  • Publication number: 20080026199
    Abstract: The present invention relates to a banner product capable of being used for hanging among the outdoor advertisement shapes. Therefore, the present invention provides a sheet for advertisement comprising a polyvinyl chloride resin as a surface layer, a polyolefin fabric or polyolefin film formed under the surface layer, and an additional adhesive layer formed between the above layers to ensure the adhesiveness. Thereby, the sheet for advertisement has excellent printability, and the use and handling of the sheet for advertisement is convenient due to reducing the total weight of the product.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 31, 2008
    Applicant: LG CHEM, LTD.
    Inventors: Hyung-Min CHA, Youn-Woo NAM
  • Publication number: 20070043150
    Abstract: Disclosed herein is a low smoke and flame retardant composition for a decorative sheet which generates less combustion gases and has excellent flame retardancy. The low smoke and flame retardant composition comprises 100 parts by weight of a PVC resin as a base resin, 5˜30 parts by weight of a phosphorus (phosphate)-based plasticizer (e.g., isodecyl diphenyl phosphate), a flame retardant and a smoke suppressant. A mixture of 2˜20 parts by weight of aluminum hydroxide and 2˜20 parts by weight of magnesium hydroxide is used as the flame retardant, and 0.5˜10 parts by weight of a molybdenum compound having an average particle size of 2˜5 microns is used as the smoke suppressant.
    Type: Application
    Filed: May 14, 2004
    Publication date: February 22, 2007
    Inventors: Min-Ho Lee, Kang-Youp Lee, Hyung-Min Cha, Young-Ho Cho
  • Publication number: 20060172104
    Abstract: The present invention is to improve application of an adhesive sheet by imparting air vent channels to an adhesive surface of the sheet. According to the present invention, air vent channels are formed to have various heights and widths so that the respective air vent channels can be vanished at certain time intervals, thereby facilitating removal of air and increasing an adhesion area to shorten time required for obtaining a designed adhesive force, and the increase of the adhesion area improves smoothness between an adhesive surface and a target surface so that patterns of the air vent channels cannot emerge on a front surface of the sheet.
    Type: Application
    Filed: January 25, 2006
    Publication date: August 3, 2006
    Inventors: Dong-Hoon Lim, Youn-Woo Nam, Hyung-Min Cha, Gang-Yeb Lee, Kyong-Won Park