Patent ID: 9535548
Date: 2017-01-03
CPC Classifications: G02B,G02F,G06F

Claim:
1. A display device, comprising: a display panel including a polarizing plate on a surface of the display panel; and a touch panel including a birefringent base material on which electrodes that detect a touch position of a position detecting object are provided, wherein polarized light which has exited from the polarizing plate enters the birefringent base material, the touch panel includes a first surface on which an antireflection layer which reduces reflection of the polarized light is provided, the first surface being opposite to a second surface of the touch panel which second surface faces the display panel, the antireflection layer includes a multilayer film in which a plurality of dielectric layers different in refractive index from each other are stacked so that a surface of the multilayer film is the first surface, a protection plate which protects the birefringent base material on which the electrodes are provided is provided between the birefringent base material and the antireflection layer, the plurality of dielectric layers are directly stacked on a surface of the protection plate, and a phase of interface reflection on an interface between the protection plate and the plurality of dielectric layers is shifted by half of a wavelength from a phase of interface reflection on an interface between the plurality of dielectric layers and an air layer.