Patent ID: 9099598
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A light-emitting device comprising: a substrate; a first electrode layer that is formed on the substrate; a dielectric layer that is formed directly on the first electrode layer or formed on the first electrode layer with another layer interposed therebetween; a second electrode layer that is formed directly on the dielectric layer or on the dielectric layer with another layer interposed therebetween; and a light-emitting portion that contacts the first electrode layer and the second electrode layer; wherein, the light-emitting portion is formed to contact at least the first electrode layer and the dielectric layer in the concave portion, and a light-emitting region is set to include the first electrode layer, the dielectric layer, the second electrode layer and the light-emitting portion and to include all the plurality of concave portions as seen from a direction perpendicular to the substrate plane, and the light-emitting device further comprises a terminal that is formed outside of the light-emitting region and connects one of the first electrode layer and the second electrode layer having larger sheet resistance to a power supply; wherein, in the light-emitting region, the plurality of concave portions are formed so that a sum, per unit area, of a contour length of planar shapes of the concave portions on an upper surface of the dielectric layer is increased from a region near the terminal to a region far from the terminal.