To improve an image quality of an organic EL display by utilizing
characteristics of a dual emission type organic light emitting element. A
display device includes a first substrate over which a plurality of
organic light emitting elements are provided and a second substrate over
which an organic light emitting element is provided. The first and second
substrates are facing each other. At least either the organic light
emitting elements provided over the first substrate or the organic light
emitting element provided over the second substrate emit/emits light
toward both surfaces of the first or second substrate. Light emitting
regions of the organic light emitting elements provided over the first
substrate are overlapped with a light emitting region of the organic
light emitting element provided over the second substrate as seen from
the second substrate.