Patent ID: 8853724

Claim:
A solid-state light-emitting element comprising: a structure body capable of transmitting visible light, the structure body including: a first layer one surface of which includes a first uneven structure; and a second layer one surface of which is in contact with the other surface of the first layer and the other surface of which includes a second uneven structure; a high refractive index material layer over and in contact with the one surface of the first layer; and a light-emitting body comprising a light-emitting region with a refractive index of greater than or equal to 1.6 over the high refractive index material layer, wherein one surface of the high refractive index material layer is flatter than the other surface in contact with the first layer, wherein a refractive index of the high refractive index material layer is greater than or equal to 1.6, wherein a refractive index of the first layer and a refractive index of the second layer are greater than 1.0 and less than the refractive index of the high refractive index material layer, and wherein the refractive index of the second layer is greater than the refractive index of the first layer.