REFLECTIVE SUBSTRATE FOR LIGHT-EMITTING ELEMENT AND METHOD FOR PRODUCING SAME
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United States of America Patent
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Sep 25, 2013
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Mar 28, 2011
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Abstract
Provided is a reflective substrate for a light-emitting device including a valve metal substrate and an inorganic reflective layer formed on the valve metal substrate as a light reflective layer, in which the inorganic reflective layer contains at least one inorganic binder selected from the group consisting of aluminum phosphate, aluminum chloride and sodium silicate, and inorganic particles having a refractive index of at least 1.5 but up to 1.8 and an average particle size of at least 0.1 μm but up to 5 μm. The reflective substrate for a light-emitting device has a highly light reflective layer capable of obtaining a film strength and adhesion to the substrate while maintaining voids by sintering at a lower temperature without relying on high-temperature sintering.
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