Patent ID: 7327335

Claim:
A display device comprising: light emitting elements formed over one surface of a light transmissive substrate; transistors formed over the light transmissive substrate; a first display surface over one surface of the light transmissive substrate; and a second display surface over the other surface of the light transmissive substrate, wherein at least one the light emitting elements includes a first electrode connected to the transistor, a second electrode and a light emitting layer interposed between the first electrode and the second electrode, wherein the first electrode and the second electrode are light transmissive electrodes and the light emitting element is arranged such that light passes through the first electrode to the first display surface and light passes through the second electrode to the second display surface, wherein an image is displayed on a first display screen formed on the first display surface and a second display screen formed on the second display surface using a light from the light emitting elements, and wherein the first display screen is larger than the second display screen.