Patent ID: 9234132
Filing Date: 2016-01-12
CPC Classification: C04B,C09K,H01L

Claim Text:
1. A conversion LED comprising a chip which emits primary radiation and a luminescent substance-containing layer which is on the chip or positioned so that it intercepts the primary radiation emitted from the chip and which converts at least some of the primary radiation of the chip into secondary radiation, wherein a first luminescent substance of the A 3 B 5 O 12 :Ce garnet type which emits yellow green and a second luminescent substance of the MAlSiN 3 :Eu calsine type which emits orange red is used, wherein the peak wavelength of the primary radiation lies in the 435 to 455 nm range, the first luminescent substance being a garnet having essentially the cation A=75 to 100 mol. % Lu, remainder Y and a Ce content of 1.5 to 2.9 mol. %, where B=10 to 40 mol. % Ga, remainder Al, while the second luminescent substance is of the basic MAlSiN 3 :Eu type, where M is Ca alone or at least 80% Ca and the remainder of M is Sr, Ba, Mg, Li or Cu, in each case alone or in combination, wherein some and at most 5% of the Al is replaced by B, and wherein a part of N is optionally replaced by O, F, Cl, alone or in combination.