| 摘要 |
PROBLEM TO BE SOLVED: To provide the flexible sheet structured material can maintain proper communication performance, without occurrence of folded-up creases, even when the sheet is bent or rolled up. SOLUTION: The sheet structured material for communication includes at least three layers (an upper layer, a middle layer and a lower layer), wherein each of the layers is sutured by thread. The upper layer has conductive ability and includes an electrically conducting portion and a non-electrically conducting portion. The percentage of the electric conduction portion is 8% to 45%, and the electric conduction portion continues, without completely breaking off, and the electrical resistance value of the electrically conducting portion is 5Ω/square or smaller. The intermediate layer has a dielectric dissipation factor of in the frequency range at 800 MHz to 10 GHz of 0.01 or smaller. The lower layer has electrical conductivity for the entire surface and has an electrical resistance value of 1Ω/square or smaller. COPYRIGHT: (C)2009,JPO&INPIT
|
