Patent ID: 8294360

Claim:
A light-emitting device comprising: a transparent or semitransparent first electrode; a second electrode that forms a pair with said first electrode and reflects light; and an organic semiconductor layer comprising a photoelectric converting layer that emits light by recombining holes removed from one of said first electrode and said second electrode with electrons removed from the other of said first electrode and said second electrode; wherein: said organic semiconductor layer comprises: between said first electrode and said photoelectric converting layer a light extraction improving layer that contains at least silver or gold in part as a component, partially reflects light, and has transparency; a hole injection layer that is formed on one of said first electrode and said second electrode and facilitates the removal of holes from said one electrode; a hole transporting layer that transports holes removed by said hole injection layer to said photoelectric converting layer; an electron injection layer that facilitates the removal of electrons from the other of said first electrode and said second electrode; and an electron transporting layer that transports electrons removed by said electron injection layer to said photoelectric converting layer; wherein said light extraction improving layer is formed between said hole injection layer and said hole transporting layer, said light extraction improving layer further comprises a discontinuous portion and, said discontinuous portion is formed in a region of said light extraction improving layer other than over said first electrode.