POLYSILOXANE-BASED COMPOSITION FOR LED ENCAPSULATION

摘要

PROBLEM TO BE SOLVED: To provide a polysiloxane-based composition which can decrease a chromaticity gap among individual semiconductor light-emitting devices.SOLUTION: Provided is a polysiloxane-based composition having a surface tension of 20.5 mN/m or more and less than 27.0 mN/m as measured by a pendant drop method. When the composition is used as an encapsulation agent, it can converge emission color emitted from a semiconductor light-emitting device comprising a light-emitting element and a phosphor layer in a range of standard deviation represented by equations: δ(x)<0.004 (1) and δ(y)<0.005 (2).