Mitsui Minings & Melting Co., Ltd.

Taizou Morinaka

Jun-ichi Itoh

Asuka Sasakura

Riichi Ogawara

A green emitting phosphor exhibiting an excellent absorption ratio is provided. A green emitting phosphor containing a crystal represented by MGaS:Eu, wherein M is an element comprising one species or a combination of two or more species among Sr, Ba and Ca, and Euis a luminescent center, and wherein the particle diameter at 10%, D10, 4.5 &#x3bc;m to 30 &#x3bc;m in the volume-based particle size distribution measured and obtained by the laser diffraction/diffusion particle size distribution measurement method.

Green emitting phosphor

A green emitting phosphor is provided, allowing the internal quantum efficiency to be increased. The green emitting phosphor comprises a mother crystal containing Sr, Ga and S, and a luminescent center, characterized in that, in an XRD pattern, the ratio of the diffraction intensity of the maximum peak appearing at diffraction angle 2&#x3b8;=14 to 20&#xb0; over the diffraction intensity of the maximum peak appearing at diffraction angle 2&#x3b8;=21 to 27&#xb0; is 0.4 or greater.

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Hida, Japan

Taizou Morinaka