| 摘要 |
PURPOSE:To obtain a body of this design high in an electromagnetic shielding performance and sufficiently high in visible light transmissivity by a method wherein a transparent electrically conductive film is provided onto transparent board face of a multilayer transparent body and electrically conductive grids are provided in an inner hollow layer. CONSTITUTION:A transparent electrically conductive film 5 is formed in an inner hollow layer 4 side of a transparent board 2 which composes a two or more layered transparent body 1, and grids 6 excellent in electrical conductivity are provided in the inner hollow layer 5. The transparent electrically conductive film 5 has an excellent shielding performance for a high frequency electromagnetic wave higher than 300MHz and the electrically conductive grids 6 have an excellent shielding performance for a low frequency electromagnetic wave lower than 400MHz, so that a high electromagnetic wave shielding effect can be obtained by using a transparent electrically conductive film and a grid together. By these processes, a transparent body of this design is favorable for the window glass of a building such as an intelligent building, a computer center, and other various kinds of buildings where a see-through, a light transmissivity, and moreover a high electromagnetic wave shielding property are required. |
