TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Parameters: Refractive index of organic compound has value that is between refractive index of window layer and refractive index of adhesive layer. Refractive index of the organic compound is 1.5-2. Organic compound absorbs light having wavelength of less than or equal to 380 nm. Light absorption of organic compound with respect to light having wavelength of greater than or equal to 400 nm is less than or equal to 5%. Glass transition temperature of organic compound is greater than or equal to 70 degrees C. Thickness of reflection prevention layer is 1-1000 nm. Preferred Components: Organic compound contains compound having hole transport capability in electric field, optionally triphenylamine-based compounds, phenanthroline-based compounds, oxadiazole-based compounds, and/or triazole-based compounds. Organic compound further contains carbazole-based compounds, fluorene-based compounds, compounds having spiro structure, conductive polymers, perfluorocyclobutyl-based polymers, and photo cross-linkable compounds. Organic compound contains compound having light-emission capability in electric field, optionally compound that emits fluorescent light or phosphorescent light. Organic compound contains anthracene-based compounds, biphenyl-based compounds, methylphenyl-based compounds, spirobifluorene-based compounds, pyrene-based compounds, pentacene-based compounds, perylene-based compounds, phenylene-based compounds, pyrenyl-based compounds, and/or naphthalene-based compounds and/or carbazol-based compounds, triphenylsilyl-based compounds, dimethylamino-based compounds, methylphenyl-based compounds, and/or tert.-butylphenyl-based compounds.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: Adhesive layer contains transparent thermoplastic resin, optionally ethylene-vinyl acetate (EVA) resins, urethane resins, silicone resins, fluororesins, and/or polyvinyl butyral resins. Preferred Processes: Reflection-prevention layer is prepared by utilizing low-temperature film formation method, optionally vacuum thermal evaporation, spin coating, inkjet printing, casting, Langmuir Blodgett (LB), spray coating, doctor-blading coating, and bar-coating.