Light diffusion film
AssigneeLintec Corporation
InventorsBaku Katagiri, Kentaro Kusama, Tomoo Orui
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Abstract
According to the present invention, there is provided a light diffusion film for diffusing incident light into an elliptical shape, which contains, inside the film, a structure composed of a plurality of flaky-shaped objects with comparatively high refractive index arranged in multiple rows in a region with comparatively low refractive index along any one arbitrary direction along the film plane. If T50 (μm) is the width of the flaky-shaped objects at a position of 50 μm below the upper end of the flaky-shaped objects in the direction of the thickness of the light diffusion film, and if L50 (μm) is the length of the flaky-shaped objects in the above-mentioned arbitrary one direction, the following relation (1) is satisfied: 0.05≤T50/L50<0.9 (1)
Claims9
A light diffusion film for diffusing incident light into an elliptical shape, the film comprising:
- a plurality of flaky-shaped objects with comparatively high refractive index arranged in a region with comparatively low refractive index,
- said flaky-shaped objects having an elongate structure defined by a width (T), a length (L), and a height, where the height extends from an upper terminus to a lower terminus, the lower terminus of each object being proximate to a lower planar surface of the film, and the upper terminus of each object terminating generally in the same plane, where T50 is the width and L50 is the length of a cross-section of each object at a plane 50 μm below the plane where the upper terminus of each object generally terminates, where the length (L) of said plurality of flaky-shaped objects increases along the height of said objects from a minimum length proximate to said upper terminus to a maximum length proximate to said lower terminus, and
- where T50 and L50 satisfy the following relationship:
- 0.05≤T50/L50<0.9 (1).
Dependencies are inferred from the claim text.