El sheet and member for lighting push-button switch

Abstract

An EL sheet and a member for lighting a push-button switch capable of emitting light stably and sufficiently for a long period of time without trouble such as non-light emission phenomena and generation of black dot, even if the EL element is subjected to, for example, a drawing process to form into a three dimensional shape, includes a counter electrode layer, dielectric layer, light-emitting layer, and transparent electrode layer. An adhesive layermade of adhesive having excellent adhesiveness to the electroconductive polymer is disposed between the transparent electrode layermade of an electroconductive polymer and the light-emitting layer. As for the adhesives having excellent adhesiveness, polyester, acrylic, cyanoacrylate, polyolefin, ethylene-vinyl acetate or ethylene ethyl acrylate type adhesive is used. The dielectric layer is made of fluoro type, polyester type or acrylic type resin binder. Furthermore, to improve durability in hot and high humidity environment, a second counter electrode layerand/or a second dielectric layer, both having an ion diffusion-preventing function, is/are disposed.