Organic el panel, display device using same, and method for producing organic el panel

An organic EL panel comprising:

• a first electrode of each of R (red), G (green), and B (blue) 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 first functional layer of each of the R, G, and B colors that includes a charge injection/transport layer and at least one other layer, and is disposed between the first electrode of a corresponding color and the organic light-emitting layer of a corresponding color;
• a second functional layer of each of the R, G, and B colors that is disposed between the second electrode and the organic light-emitting layer of a corresponding color;
• and
• 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 first 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 first functional layer of the corresponding color, the organic light-emitting layer of the corresponding color, the second functional layer of a 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 through the second functional layer of the corresponding color 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 charge injection/transport layers of the R, G, and B colors differ in film thickness from one another,
• the respective at least one other layers of the R, G, and B colors are equal in film thickness to one another,
• the respective second functional layers of the R, G, and B colors are equal in film thickness to one another, and
• the respective organic light-emitting layers of the R and G colors are equal in film thickness to each other, and differ in film thickness from the organic light-emitting layer of the B color.

A method of manufacturing an organic EL panel, comprising:

• a first step of preparing a first electrode of each of R (red), G (green), and B (blue) colors that reflects incident light;
• a second step of disposing a first functional layer of each of the R, G, and B colors including a charge injection/transport layer and at least one other layer on the first electrode of a corresponding color;
• a third step of disposing an organic light-emitting layer that emits light of each of the R, G, and B colors on the first functional layer of a corresponding color;
• a fourth step of disposing a second functional layer of each of the R, G, and B colors on the organic light-emitting layer of a corresponding color;
• a fifth step of disposing a second electrode that transmits incident light therethrough on the respective second functional layers of the R, G, and B colors so as to face the respective first electrodes of the R, G, and B colors;
• and
• a sixth step of disposing a color filter of each of the R, G, and B colors for chromaticity correction so as to be opposite the organic light-emitting layer of a corresponding color with the second electrode being interposed therebetween, wherein
• in the second step, the first functional layer is disposed such that the respective charge injection/transport layers of the R, G, and B colors differ in film thickness from one another, and the respective at least one other layers of the R, G, and B colors are equal in film thickness to one another,
• in the third step, the organic light-emitting layer is disposed such that the respective organic light-emitting layers of the R and G colors are equal in film thickness to each other, and differ in film thickness from the organic light-emitting layer of the B color, and
• in the fourth step, the second functional layer is disposed such that the respective second functional layers of the R, G, and B colors are equal in film thickness to one another.