Patent ID: 7864267

Claim:
A display unit comprising: a panel driven based on an image signal; a pair of polarizers sandwiching the display panel; a light source for illuminating the panel; and an optical sheet provided between the polarizer and the light source, wherein the optical sheet is formed by layering a first light transmissive film and a second light transmissive film in this order from the light source side, the first light transmissive film has a plurality of first convexes that extend in a given direction and are arranged in parallel in a direction crossing the given direction in-plane on the second light transmissive film side, and the second light transmissive film has a plurality of second convexes that are arranged in parallel in one direction and are arranged in parallel in a direction crossing the one direction in-plane on the first light transmissive film side, and has shape anisotropy and refractive index anisotropy in-plane, wherein a direction having the smallest refractive index in the second convex is in parallel with a direction of a light transmission axis of the polarizer on the light source side, or crosses the direction of a light transmission axis of the polarizer in the range of from more than 0 degree to less than 45 degrees.