Patent ID: 6277301
Filing Date: 2001-08-21
Classification: C09K,H01L,Y02B

Abstract:
A method of producing a wavelength-converting casting composition, for converting a wavelength of ultraviolet, blue or green light emitted by an electroluminescent component, the method comprising:providing a base of transparent epoxy casting resin;providing a luminous substance pigment powder containing luminous substance pigments having grain sizes .ltoreq.20 .mu.m and a mean grain diameter d.sub.50.ltoreq.5 .mu.m and being selected from the group consisting of Ce-doped phosphors; garnets doped with rare earths; thiogallates doped with rare earths; aluminates doped with rare earths; and orthosilicates doped with rare earths;tempering the luminous substance pigment powder at a temperature of .gtoreq.200.degree. C. and subsequently mixing the tempered pigment powder with the epoxy casting resin.