| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical sheet pasting material for improvement of light-extraction efficiency for an EL element, with improved light-extraction efficiency as well as lowered visibility of defects of an optical sheet surface, and with easy-to-peel-off performance, that is, a rework property between a pasting layer and a translucent substrate after pasting. SOLUTION: In the EL element provided with a translucent substrate, and a light-emitting layer fitted on one face of the translucent substrate and pinched by an anode and a cathode, a lens group is fitted to the surface of the translucent substrate, to be structured by pasting an optical sheet having a structure with a plurality of unit lenses arranged in two dimensions to the other face of the translucent substrate through the pasting layer. COPYRIGHT: (C)2010,JPO&INPIT
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