Light-emitting module and light-emitting device

摘要

A light-emitting module which efficiently extracts light emitted from a light-emitting element is provided. Alternatively, a light-emitting module having lower power consumption or improved reliability is provided. A light-emitting module includes a window material having a light-transmitting property, a light-emitting element that emits light transmitted from a light-transmitting layer to the window material, and an optical bonding layer between the window material and the light-transmitting layer. The optical bonding layer includes a thick part overlapping the light-emitting element and a thin part surrounding the thick part. The light-transmitting layer, the optical bonding layer, and the window material are provided in decreasing order of refractive index.

主权项

1. A light-emitting module comprising:
a window material having a light-transmitting property; an organic electroluminescent element over a substrate; a first layer between the window material and the organic electroluminescent element, the first layer including a first part overlapping with the organic electroluminescent element, a second part around the first part, and a third part between the first part and the second part; and a sealing material provided between the window material and the substrate, wherein the window material and the substrate are bonded to each other by the sealing material, wherein the sealing material is in contact with the first layer and the window material, wherein the sealing material is arranged at a periphery portion of the substrate, wherein the first part is thicker than the second part, wherein the organic electroluminescent element includes a first electrode, a second electrode overlapping with the first electrode, and a second layer containing a light-emitting organic compound between the first electrode and the second electrode, wherein a refractive index of the first layer is higher than or equal to a refractive index of the second layer and higher than a refractive index of the window material, and wherein a refractive index of the third part changes continuously.