Manufacturing method for light emitting device and phosphor mixture

摘要

Disclosed is a manufacturing method for a light emitting device including a light emitting element and a wavelength converting part which converts light emitted from the light emitting element into light of another wavelength. The manufacturing method includes a first step and a second step. The first step is a step of applying onto the light emitting element and drying a first liquid mixture in which phosphor and plate-like particles are dispersed in polyhydric alcohol having a valence of two or more to form a phosphor layer. The second step is a step of applying onto the phosphor layer and firing a second liquid mixture in which a translucent ceramic precursor is dispersed in a solvent to form the wavelength converting part.

主权项

1. A manufacturing method for a light emitting device including a light emitting element and a wavelength converting part which converts light emitted from the light emitting element into light of another wavelength, the manufacturing method comprising:
a step of applying onto the light emitting element and drying a first liquid mixture in which phosphor and plate-like particles are dispersed in polyhydric alcohol having a valence of two or more to form a phosphor layer; and a step of applying onto the phosphor layer and firing a second liquid mixture in which a translucent ceramic precursor is dispersed in a solvent to form the wavelength converting part, wherein the plate-like particles have an average aspect ratio of 10 or more, and the plate-like particles are of a layered silicate mineral, to lower the chromaticity variation.