Patent ID: 6656610
Filing Date: 2003-12-02
Classification: C09K,H05B,Y10S

Abstract:
A phosphor thin film comprising a matrix material comprising:an oxysulfide consisting of: oxygen, and at least one compound selected from the group consisting of rare earth thioaluminates, rare earth thiogallates, rare earth thioindates, and combinations thereof; and an element serving as a luminescent center; wherein the phosphor thin film has the following compositional formula: Rx Ay Oz Sw :M wherein M is a metal element serving as the luminescent center, R is at least one element selected from the group consisting of rare earth elements, A is at least one element selected from the group consisting of Al, Ga, and In, x ranges from 1 to 5, y ranges from 1 to 15, z ranges from 3 to 30, and w ranges from 3 to 30.