Patent ID: 8907329

Claim:
An organic electro luminescence (EL) panel, comprising: a first electrode of each of red (R), green (G), and blue (B) colors that reflects incident light; a second electrode that faces the first electrode of each of the R, G, and B colors, and transmits incident light therethrough; an organic light-emitting layer of each of the R, G, and B colors that is disposed between the first electrode of a corresponding color and the second electrode, and emits light of a corresponding color due to voltage application between the first electrode of the corresponding color and the second electrode; a functional layer of each of the R, G, and B colors that is disposed between the first electrode of a corresponding color and the organic light-emitting layer of a corresponding color; a color filter of each of the R, G, and B colors for chromaticity correction that is disposed opposite the organic light-emitting layer of a corresponding color with the second electrode being interposed therebetween, wherein a first portion of light of each of the R, G, and B colors emitted from the organic light-emitting layer of a corresponding color travels through the functional layer of a corresponding color towards the first electrode of a corresponding color, strikes and is reflected by the first electrode of the corresponding color, and then is emitted externally after passing through the functional layer of the corresponding color, the organic light-emitting layer of the corresponding color, the second electrode, and the color filter of a corresponding color, a second portion of the light of each of the R, G, and B colors travels towards the second electrode instead of towards the first electrode of the corresponding color, and is emitted externally after passing through the second electrode and the color filter of the corresponding color, the respective functional layers of the R, G, and B colors are equal in film thickness to one another, the film thickness of each of the respective functional layers of the R and G colors corresponds to a first local maximum of light-extraction efficiency with respect to the light of the corresponding color before passing through the color filter of the corresponding color, the film thickness of the functional layer of the B color corresponds to a value of light-extraction efficiency that is smaller than a first local maximum of light-extraction efficiency with respect to the light of the B color before passing through the color filter of the B color, the respective organic light-emitting layers of the R, G, and B colors differ in film thickness from one another, such that the respective functional layers of the R, G, and B colors are equal in film thickness to one another, and the light of each of the R, G, and B colors emitted externally after passing through the color filter of the corresponding color exhibits a local maximum of light-extraction efficiency.