Patent ID: 8102485
Filing Date: 2012-01-24
Classification: G02F

Abstract:
1. An electro-optical device comprising: an electro-optical panel that includes a plurality of pixels arranged in a plane, each pixel includes a light transmissive region having a first arrangement period in a first direction in the plane and a second arrangement period in a second direction in the plane, the first direction being orthogonal to the second direction and the second arrangement period being larger than the first arrangement period; a backlight that irradiates light on the electro-optical panel; a first condensing layer that is disposed between the electro-optical panel and the backlight and that has a plurality of elongate prismatic optical structures, and has a first optical structural period in the first direction; and a second condensing layer that is disposed between the electro-optical panel and the first condensing layer and that has a plurality of elongate optical structures, and has a second optical structural period in the second direction, wherein an angle between oblique surfaces that form the prismatic optical structures of the first and second condensing layers is between 80 and 90 degrees, wherein the ratio of the first arrangement period to the first optical structural period is smaller than the ratio of the second arrangement period to the second optical structural period, and the elongate prismatic optical structures of the first condensing layer are arranged in parallel with a length direction of each pixel, the elongate prismatic optical structures of the second condensing layer are arranged in parallel with a width direction of each pixel, a length of each pixel being greater than a width of each pixel.