Light-Emitting Panel, Light-Emitting Device, and Method for Manufacturing the Light-Emitting Panel

A light-emitting panel comprising:

• a first light-emitting element:
• a second light-emitting element;
• and
• a third light-emitting element,
• wherein the first light-emitting element, the second light-emitting element, and the third light-emitting element each comprises, between a pair of a reflective film and a semi-transmissive and semi-reflective film, a layer containing a light-emitting organic compound interposed between a pair of electrodes and an optical adjustment layer,
• wherein the layer containing a light-emitting organic compound in each of the first light-emitting element, the second light-emitting element, and the third light-emitting element emits light comprising light with a wavelength greater than or equal to 600 nm and less than 800 nm and light with a wavelength greater than or equal to 400 nm and less than 600 nm,
• wherein the first light-emitting element and the second light-emitting element have an equal optical path length between the pair of the reflective film and the semi-transmissive and semi-reflective film of N/2 (N is a natural number) of a length greater than or equal to 600 nm and less than 800 nm,
• wherein a layer transmitting red light is provided over the semi-transmissive and semi-reflective film in the second light-emitting element, and
• wherein an optical path length between the pair of the reflective film and the semi-transmissive and semi-reflective film in the third light-emitting element is N/2 (N is a natural number) of a length greater than or equal to 400 nm and less than 600 nm.