Patent ID: 9577159
Date: 2017-02-21
CPC Classifications: B29C,C08J,C09D,C09K,H01L

Claim:
1. A method of producing a light-emitting device, comprising: a placing step of placing, above a substrate on which light-emitting elements are mounted in respective cavities facing upwards, a porous plate having through holes corresponding to the respective cavities, the placing being carried out so that the porous plate is placed substantially parallel to the substrate; a situating step of situating, on the porous plate, a fluorescent material-containing sealant in which a powder of fluorescent materials is kneaded with silicone resins that have been semi-cured by primary crosslinking; an extruding step of extruding the fluorescent material-containing sealant in a form of strings via the respective through holes toward the substrate while melting the fluorescent material-containing sealant by heat at (i) room temperature or (ii) a temperature lower than a secondary crosslinking temperature at which the silicone resins form secondary crosslinking; a filling step of filling the cavities with the respective strings of fluorescent material-containing sealant by cutting, to a predetermined length, each of the strings of fluorescent material-containing sealant thus extruded; and a curing step of curing the fluorescent material-containing sealant with which the cavities are filled, the curing being carried out by heating the fluorescent material-containing sealant at the secondary crosslinking temperature or higher, the silicone resins being configured to (i) reversibly change in viscosity in a temperature region between the room temperature and the temperature lower than the secondary crosslinking temperature and (ii) be completely cured in a temperature region encompassing the secondary crosslinking temperature or higher.