• 专利标题:   Graphene sheet used in e.g. field emission display, liquid crystal display, organic light emitting device, super-capacitor, field-effect transistor, or memory device comprises graphene containing ten or fewer wrinkles of the grapheme.
  • 专利号:   US2011104442-A1, EP2327662-A1, KR2011046863-A, US9187332-B2, KR1622306-B1, EP2327662-B1
  • 发明人:   YOON S, CHOI J, CHOI W, SHIN H, YOON S M, CHOI J Y, CHOI W M, SHIN H J
  • 专利权人:   SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO LTD
  • 国际专利分类:   B05D003/02, B05D003/10, B32B003/00, B32B037/16, B32B005/00, B82Y030/00, C01B031/04, B32B003/28, C01B031/02, B05D001/02, B44C001/22, B82Y040/00, D06N007/04
  • 专利详细信息:   US2011104442-A1 05 May 2011 B32B-003/00 201132 Pages: 20 English
  • 申请详细信息:   US2011104442-A1 US915891 29 Oct 2010
  • 优先权号:   KR108860, KR023457, KR103555

▎ 摘  要

NOVELTY - A graphene sheet comprises: graphene comprising ten or fewer wrinkles per 1000 square micrometers of the graphene. USE - As a graphene sheet (claimed) used in various display devices, such as a field emission display (FED), a liquid crystal display (LCD), an organic light emitting device (OLED); in a super-capacitor, a fuel cell, or a solar cell; or in a nano-device such as a field-effect transistor (FET), or a memory device, a transparent electrode, a hydrogen storage device, an optical fiber, or other electrical device. ADVANTAGE - The graphene sheet has a large size, fewer defects, and improved quality relative to commercially available graphene. The graphene sheet has: an area of greater than or equal to 1 square millimeter; graphene coverage of greater than or equal to 99% per 1 square millimeter area of the graphene sheet; a thickness corresponding to 1-10 layers of grapheme; a thickness of 0.3-3.3 nanometers; and a three-dimensional shape. The graphene sheet having fewer wrinkles provides a more homogeneous graphene sheet having better electrical characteristics. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a graphene base comprising: either a substrate; and a graphene sheet directly on a surface of the substrate, where the graphene sheet comprises graphene and have 10 or fewer wrinkles per 1000 square millimeters of the graphene sheet; or a substrate; a first graphene sheet disposed on at least one surface of the substrate; a metal layer disposed on the first graphene sheet; and a second graphene sheet disposed on the metal layer; or a substrate having a side forming an angle with respect to a surface of the substrate; and a graphene sheet disposed on the side of the substrate; and (2) preparing a graphene sheet, involving: forming a carbon incorporated metal layer on at least one surface of a substrate; and thermally treating the substrate and the carbon incorporated metal layer to form first and second graphene sheets on opposite surfaces of a resulting metal layer.