Patent ID: 7260135

Claim:
A light emitting device comprising: a first electrode; an electroluminescent layer; and a second electrode, wherein the first electrode has a convex portion to the electroluminescent layer and has a first curved surface in the convex portion, wherein the second electrode has a concave portion to the electroluminescent layer and has a second curved surface in the concave portion, wherein the electroluminescent layer formed over the first electrode to overlap the convex portion, wherein the second electrode formed over the electroluminescent layer to overlap the convex portion, wherein a center of a curvature of the first curved surface is located on an opposite side of the second electrode, wherein a center of a curvature of the second curved surface is located on a side of the first electrode, wherein laser light is emitted by reflecting light generated in the electroluminescent layer between the first electrode and the second electrode, wherein a distance L between the first electrode and the second electrode on an extension of an optical path of the laser light satisfy following relation r 1 <0 and 0<r 2 <L where a radius of the curvature of the first curved surface is r 1 and a radius of the curvature of the second curved surface is r 2 .