| 摘要 |
PROBLEM TO BE SOLVED: To provide a push-button switch structure with metal tone appearance outside having enough shading performance and suppressing highly metallic luster that obstructs perceptivity of a display. SOLUTION: Diffusion transmissivity of film substrate used for a metal deposited film which has a metal deposited layer on its inner surface and covers an outer surface of a resin keytop structure which has an external shape of the keytop of the push-button switch excluding its bottom surface, is 5% or more, and total light transmissivity of the film substrate is 50% or more. COPYRIGHT: (C)2004,JPO
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