OPTICAL FUNCTIONAL FILM AND MANUFACTURING METHOD THEREOF

摘要

A light emitting element includes a light emitting layer (102) for emitting light and a refraction factor composite structure layer (103) arranged on the optical path of the light emitted from the light emitting layer (102). The refraction factor composite structure layer (103) includes a structure having characteristics [1] to [4] as follows. [1] The internal structure has at least two types of phase having different refraction factors. [2] At least one of the two or more types of phase is formed by a structure unit of size not smaller than 1 nm and not greater than 1/4 of the wavelength of the visible wavelength light area. [3] The average refraction factor is higher than 1 and lower than the refraction factor of the layer other than the layer including the gas phase among a plurality of layers existing between the light emitting body ad the refraction factor composite structure layer (103). [4] The internal structure in the thickness direction has a plurality of boundary faces in contact with the aforementioned two or more types of phases in a near field area to which light can come, from viewpoint of energy, from a boundary face with the other layer in contact with the refraction ration composite structure layer (103).