Patent ID: 9356203
Filing Date: 2016-05-31
CPC Classification: C01B,C01P,C04B,C09K,H01L,Y10T

Claim Text:
1. A white light emitting apparatus comprising: a light emitting element of a gallium nitride-based semiconductor emitting primary light having a peak wavelength of 430-480 nm; and a light converter absorbing a part of said primary light to emit secondary light having a wavelength longer than a wavelength of said primary light, said light converter including a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor which is a β-type SiAlON substantially represented by a general formula: where 0.005≦a≦0.2, b+c=12, d+e=16, said phosphor particle group of divalent europium-activated oxynitride green light consisting of a columnar particle in which a value obtained by dividing a longer particle diameter by a shorter particle diameter is greater than 1.0 and not greater than 3.0, and the light converter further comprising phosphor particles of a red light emitting phosphor.