Fluorescent substance-containing silicone cured product, method for producing the same, phosphor-containing silicone composition, composition precursor, sheet-like molded article, LED package, light emitting device, and method for producing LED mounting substrate

摘要

A phosphor-containing cured silicone that is a cured silicone which has a structure represented by general formulae (1) and/or (2) and also has units selected from general formulae (3) and/or (4), the phosphor-containing cured silicone includes a phosphor and particles having units selected from general formulae (3) and/or (4) : wherein R 1 to R 3 are each a hydrogen atom, a methyl group, an ethyl group or a propyl group; X represents a methylene group, a dimethylene group or a trimethylene group, and may be the same or different; and R 4 to R 6 are each a substituted or unsubstituted monovalent hydrocarbon group, and may be the same or different. An object of the present invention is to provide a cured silicone in which a phosphor is uniformly dispersed, the cured silicone is characterized in that a silicone material has good thermal resistance and lightfastness. In addition, an object of the present invention is to provide a process for production of an LED-mounted substrate by which a plurality of LED elements can be continuously mounted in a batch manner.