PHOSPHOR MIXTURE HAVING HIGH LIGHT EMITTING PACKAGE WITH HIGH COLOR RENDERING PROPERTIES BY MIXING SELECTING AND MODERATELY MIXING MATERIALS USEFUL FOR WHITE LIGHT EMISSION, AND A LIGHT EMITTING PACKAGE WITH HIGH COLOR RENDERING

摘要

PURPOSE: A phosphor mixture is provided to minimize the loss of brightness, and to satisfy high color rendering through mixing green light phosphors and red light phosphors moderately.;CONSTITUTION: A phosphor mixture comprises first phosphor and second phosphor with the weight ratio of 1: 5-6. The first phosphor is selected from red phosphors which is {X2Si5N8 : Ψ}(X is one kind of metals selected from Sr, Ca, Ba, Ra, Mg, and Be, and Ψ is one kind of metals selected from Eu, Ce, Mn and Dy). The second phosphor is selected from green phosphors which is {X-SiON : Ψ} or {X-SiAlON : Ψ}(X is one kind of metal selected from Li, Ca, and Y, and Ψ is one kind of metal selected Eu, Ce and Mn).;COPYRIGHT KIPO 2012