LIGHT-EMITTING DEVICE

摘要

The emission efficiency of a light-emitting device including a microcavity structure is improved. The light-emitting device includes a plurality of light-emitting elements. The plurality of light-emitting elements each include a reflective electrode, a transparent electrode, a plurality of light-emitting layers, and a semi-transmissive and semi-reflective electrode stacked in that order. The plurality of light-emitting layers emit light of different colors. A surface roughness of the transparent electrode in the light-emitting element which is among the plurality of light-emitting elements and in which light emitted from the light-emitting layer closest to the reflective electrode is amplified and emitted outside is greater than surface roughnesses of the transparent electrodes in the other light-emitting elements.

主权项

1. A light-emitting device comprising:
a plurality of light-emitting elements each including:
a reflective electrode;a transparent electrode over the reflective electrode;a plurality of light-emitting layers over the transparent electrode, the plurality of light-emitting layers emitting lights of different colors from one another; anda semi-transmissive and semi-reflective electrode over the plurality of light-emitting layers, wherein a surface roughness of the transparent electrode in one of the plurality of light-emitting elements is greater than surface roughnesses of the transparent electrodes in the others of the plurality of light-emitting elements, and wherein the one of the plurality of light-emitting elements is configured so that the light emitted from one of the plurality of light-emitting layers, which is the closest to the reflective electrode among the plurality of light-emitting layers, is optically amplified.