| 摘要 |
PROBLEM TO BE SOLVED: To provide an EL sheet and a cover member for a push-button switch durable against drawing and bend in drawing or the like by improving ductility. SOLUTION: This cover member 1 for a push-button switch is provided with a key top part 2 and a support member for supporting the key top part 2. A board member 20 is provided with a circuit board 21, fixed contacts 22 and 23 and a metallic plate spring member 24. The key top part 2 includes a core material 6, an insulation layer 5 formed by being stacked so as to cover the upper surface and side surfaces of the core material 6, this EL sheet 4 and a resin film 3. The EL sheet 4 includes a transparent electrode 41, an easy adhesive layer 42, a luminescent layer 43, a dielectric layer 44 and an opposite electrode 45. The easy adhesive layer 42 is formed of a thermoplastic resin such as polyacrylonitrile or polyester. COPYRIGHT: (C)2006,JPO&NCIPI
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