Patent ID: 8829780
Filing Date: 2014-09-09
Classification: C09K,H01L,Y02B

Abstract:
1. A white light-emitting semiconductor device comprising a phosphor as a light-emitting material, and with a light-emitting semiconductor element as an excitation source of the phosphor, and said phosphor including at least a green phosphor and a wide-band red phosphor, wherein said green phosphor includes at least one type of green phosphor selected from among a green phosphor that contains a crystal formed of an alkaline earth silicon oxynitride or Sialon as a base and that contains Eu an intensity at wavelength 640 nm of an emission spectrum which has been normalized with respect to luminous flux is 100-110% of the intensity at wavelength 640 nm of a spectrum of standard light for color rendering evaluation which has been normalized with respect to luminous flux.