Patent ID: 7034451

Claim:
A self light emitting display device, comprising: a self light emitting element; a first polarization layer and a second polarization layer sandwiching therebetween the self light emitting element; a first optical phase differential layer (retardation: Δn 1 d 1 where Δn is optical anisotropy and d is a thickness) provided between the self light emitting element and the first polarization layer; and a second optical phase differential layer (retardation: Δn 2 d 2 ) provided between the self light emitting element and the second polarization layer; wherein a transmission axis of the first polarization layer is parallel to a transmission axis of the second polarization layer; and wherein a delay phase axis of the optical anisotropy of the first optical phase differential layer (Δn 1 d 1 ) is parallel to a delay phase axis of the optical anisotropy of the second optical phase differential layer (Δn 2 d 2 ) and an angle produced by the delay phase axis and the transmission axis of the first polarization layer is set to block external light.