| 摘要 |
PURPOSE:To get a good yield in the working process and use the film on a steep curved surface by applying an achromatic transparent adhesive layer which is tacky at an ordinary temperature to one side or both sides of an achromatic transparent water absorbing film. CONSTITUTION:An achromatic transparent adhesive layer which is tacky at an ordinary temperature is applied to the surface of an achromatic transparent water absorbing film. This water absorbing film is achromatic and transparent and has a hygroscopic degree of 0.5wt.% or more in an atmosphere where the temperature is 20 deg.C, and the relative humidity is 60%, and polyamide resin, etc., is suitable for the film. As an adhesive layer, acrylic resin, etc., is used. Unless the adhesive and water absorbing film to be used are achromatic and transparent, the luminance drops and the color tone becomes bad. As this adhesive layer adsorbs a shock or strain, deterioration of the luminous layer does not take place and EL with a long life can be made. It is possible, therefore, to improve a yield in the working process and also use the film on a steep curbed surface. |
