Patent ID: 7459726

Claim:
A semiconductor device comprising: a first semiconductor element including at least one thin film transistor; a second semiconductor element including at least one thin film transistor; a first insulating film and a second insulating film formed between the first semiconductor element and the second semiconductor element; a resin film formed between and in contact with the first insulating film and the second insulating film; a light emitting element electrically connected to the first semiconductor element; and a light receiving element electrically connected to the second semiconductor element, wherein the first semiconductor element and the second semiconductor element are stacked with the first insulating film, the second insulating film, and the resin film interposed therebetween, wherein a signal is transmitted and received between the first semiconductor element and the second semiconductor element by using the light emitting element and the light receiving element, wherein the light emitting element comprises a first electrode, a second electrode, and an electro-luminescent layer formed between the first electrode and the second electrode, and wherein the first electrode, the electro-luminescent layer, and the second electrode are overlapped each other.