发明名称 |
LED device manufacturing method and fluorescent material-dispersed solution used in same |
摘要 |
The present invention addresses the problem of providing an LED device having no color unevenness in light emission. In order to solve the problem, this LED device manufacturing method includes: a step of providing an LED chip-mounted package; a step of film-forming a fluorescent material layer by applying a fluorescent material-dispersed solution to a emission surface of the LED chip, said fluorescent material-dispersed solution containing a solvent, a fluorescent material, clay minerals and porous inorganic particles, and by drying the fluorescent material-dispersed solution; and a step of film-forming a wavelength conversion section by applying, to the fluorescent material layer, a precursor solution having a precursor of a light transmissive ceramic dispersed in a solvent, and by firing the layer, said wavelength conversion section being composed of a light transmissive ceramic layer having the fluorescent material, the clay minerals and the porous inorganic particles dispersed therein. |
申请公布号 |
US9318646(B2) |
申请公布日期 |
2016.04.19 |
申请号 |
US201214349548 |
申请日期 |
2012.10.05 |
申请人 |
KONICA MINOLTA, INC. |
发明人 |
Taguchi Yoshihito |
分类号 |
H01L21/00;H01L33/00;H01L33/50;C09K11/02;C09K11/77 |
主分类号 |
H01L21/00 |
代理机构 |
Lucas & Mercanti, LLP |
代理人 |
Lucas & Mercanti, LLP |
主权项 |
1. A method for manufacturing an LED device having an LED chip and a wavelength conversion part to convert light emitted from the LED chip to light having a wavelength different from a wavelength of the light emitted from the LED chip, the method comprising:
providing an LED chip package including a package and an LED chip disposed on the package, the LED chip having an emission surface; applying on the emission surface of the LED chip a phosphor dispersion liquid containing a solvent, a phosphor, a clay mineral and porous inorganic particles, the phosphor, the clay mineral and the porous inorganic particles being dispersed in the solvent, followed by drying to form a phosphor layer; and applying on the phosphor layer a precursor solution in which a light transmissive ceramic precursor is dispersed in a solvent, followed by calcination to form a wavelength conversion part made of a light transmissive ceramic layer in which the phosphor, the clay mineral and the porous inorganic particles are dispersed. |
地址 |
Tokyo JP |