Patent ID: 7176612

Claim:
An LED device, at least comprising: a blue light emitting element having peak emission wavelength of 420 nm to 480 nm, a green fluorescent substance having peak wavelength of fluorescent spectrum in the range of 500 nm to 580 nm with the emission of said blue light emitting element, and a red light emitting element having peak emission wavelength of 600 nm to 670 nm, wherein said green fluorescent substance having peak wavelength of fluorescent spectrum in the range of 500 nm to 580 nm is formed of at least two fluorescent substances, and wherein the fluorescent substances are selected from the group consisting of SrGa 2 S 4 :Eu; RMg 2 Al 16 O 27 :Eu, Mn (R is at least one element selected from Sr and Ba); RMgAl 10 O 17 :Eu, Mn (R is at least one element selected from Sr and Ba); ZnS:Cu; SrAl 2 O 4 :Eu; SrAl 2 O 4 :Eu, Dy; ZnO:Zn; Zn 2 Ge 2 O 4 :Mn; Zn 2 SiO 4 :Mn; and Q 3 MgSi 2 O 8 :Eu, Mn (Q is at least one element selected from Sr, Ba and Ca).