FLUORESCENT ADHESIVE SHEET, OPTICAL SEMICONDUCTOR ELEMENT-PHOSPHOR LAYER PRESSURE-SENSITIVE ADHESIVE BODY AND OPTICAL SEMICONDUCTOR DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a fluorescent adhesive sheet, an optical semiconductor element-phosphor layer pressure-sensitive adhesive body and an optical semiconductor device, each having excellent heat resistance and durability.SOLUTION: A fluorescent adhesive sheet 6 comprises: a phosphor layer 3 including a fluorescent body; and an adhesive layer 4 laminated on a top face of the phosphor layer 3. The adhesive layer 4 is made of a pressure-sensitive silicone adhesive composition, and the following percentage of peel strength is 30% or more. The percentage of the peel strength=[(peel strength at 75°C atmosphere PSC)/(peel strength at 25°C atmosphere PSC)]×100.