Patent ID: 9274365
Filing Date: 2016-03-01
CPC Classification: G02B,G02F

Claim Text:
1. An anisotropic scatterer having a scattering characteristic of light in a display region of a display device to have an angle dependence, the anisotropic scatterer comprising: low refractive index regions; and high refractive index regions, wherein the scatterer has: a x-direction; a y-direction; and a z-direction that is a width direction of the scatterer, the x-direction, the y-direction, and the z-direction being perpendicular to each other, wherein a y-z section that is a section of the anisotropic scatterer defined by the y-direction and the z-direction and that is vertical to a x-y plane defined by the x-direction and the y-direction, wherein the y-z section includes a plurality of parallelograms that are shapes of the high refractive index regions and that are arranged along the y-direction, wherein each of the parallelograms has a pair of sides each forming an angle with the z-direction, the pair of sides indicating high-low-index boundaries disposed between the low refractive index regions and the high refractive index regions, and wherein the angles, which are between the z-direction and the pair of sides of the parallelograms, increase continuously along the y-direction, allowing to change the scattering characteristic of the light continuously in the planar y-direction.