LG Display Co., Ltd.
Organic light emitting diode display device having color changing layer

Abstract:

An organic light emitting diode display device includes a substrate on which first, second and third pixel regions are defined; a first electrode in each of the first, second and third pixel regions on the substrate; a hole auxiliary layer on the first electrode; a first light emitting material layer on the hole auxiliary layer and emitting first light; an electron auxiliary layer on the first light emitting material layer; a second electrode on the electron auxiliary layer; and a color changing layer under the first electrode or on the second electrode, wherein the color changing layer includes first, second and third portions corresponding to the first, second and third pixel regions, respectively, and wherein the first portion absorbs the first light and outputs second light, the second portion absorbs the first light and outputs third light, and the third portion passes the first light as it is.