| 摘要 |
PROBLEM TO BE SOLVED: To effectively suppress production of a dark spot by efficiently catching moisture in an element by a water catching material, as for an organic EL element. SOLUTION: An anode 3 of ITO, an organic layer 4 and a cathode 8 are on a substrate 2. A container part 9 is adhered to the substrate 2 by an adhesive 10 in a dry atmosphere. The container part 9 has a frame part 11 and a recess 12. A water catching layer 13 is in the recess 12. The water catching layer 13 is obtained by putting 2g of calcium oxide powder in a liquid obtained by dissolving 1g of hydroxy-propyl-cellulose in 10 cc of butyl carbitol in advance, sufficiently stirring it, pouring the liquid in the recess 12 of the container part 9, vaporizing the solvent by heating it after distributing it throughout the entire recess, and adhering its solid component. Since the water catching layer 13 is provided in a wide area throughout the almost entire internal surface of the container part 9, an absorbing area of moisture gets larger than that in the past. A quantity of entire water catching material is also bigger than that in the past. No other material to fix the water catching material is required. The depth of the recess is small, and the thickness of the element as a whole is small. Production of harmful dark spot is effectively suppressed. |
