| abstract |
(57) [Problem] To provide an anisotropic light-scattering film capable of suppressing a decrease in luminance and uniformly emitting light with high accuracy. SOLUTION: In a scattering characteristic F (θ) indicating a relationship between a scattering angle θ and a scattered light intensity F, a scattering characteristic in the X-axis direction of the film 10 is Fx (θ), and a scattering characteristic in the Y-axis direction is Fy. (Θ), in the range of θ = 4 to 30 °, the expression Fy A film that satisfies (θ) / Fx (θ)> 5 is used. The film 10 is composed of a continuous phase and a dispersed phase particle 11 having a refractive index different from each other by 0.001 or more, the average aspect ratio of the particle is larger than 1, and the major axis direction of the particle is oriented in the X axis direction of the film 10. are doing. The continuous phase can be composed of a crystalline resin, and the dispersed phase can be composed of an amorphous resin. The film may contain a compatibilizer. |