Patent ID: 8743466
Filing Date: 2014-06-03
Classification: G02B,G02F

Abstract:
1. A display device comprising: a display element that makes a display; and a viewing angle widening member that is provided on a viewing side of the display element, and that causes light to exit in a condition in which the angle distribution is widened relative to before incidence of the viewing angle widening member to the display element; wherein the viewing angle widening member includes a base material and a refractive index change layer formed over the base material, wherein the refractive index change layer includes a plurality of high refractive index portions and a low refractive index portion having a refractive index that is lower than the refractive index of the high refractive index portions; wherein each of the plurality of high refractive index portions has a light emission surface on the base material side, and a light incidence surface having a larger surface area than that of the light emission surface on the side opposing the base material side, wherein the light incidence surfaces of the plurality of high refractive index portions are separated from each other, wherein the refractive index change layer faces the display element, and wherein the base material is disposed on a display side.