Anti-reflection sheet with a resin layer including a plurality of fine projections, display element and display device including the sheet

A display device comprising:

• a display panel;
• a transparent protective plate arranged opposite to a face on an image generation side of the display panel;
• and
• an anti-reflection sheet disposed on at least one of front and back faces of the transparent protective plate,
• wherein the anti-reflection sheet comprises:
• a transparent substrate;
• and
• a resin layer formed on a surface of a transparent substrate,
• wherein the resin layer comprises:
• a first surface that faces the surface of the transparent substrate;
• a second surface that faces away from the surface of the transparent substrate;
• and
• a plurality of projections arranged on the second surface of the resin layer so as to form a projection layer,
• wherein each of the plurality of projections has a cross section that includes a predetermined center axis perpendicular to the surface of the transparent substrate,
• wherein each of the plurality of projections has a cross section that is in a shape that satisfies a quadratic function,
• wherein an arranged pitch of each of the plurality of projections is not more than half of a wavelength of incident light,
• wherein a difference between a refractive index n1 of the transparent substrate and a refractive index n2 of the resin layer satisfies the following expression:
• |n1−n2≦0.05,
• wherein a thickness of the resin layer is between 11 μm and 30 μm, and
• wherein the resin layer suppresses the generation of an interference fringe under fluorescent lamps.