Provided is a film for improving a viewing angle, which can achieve both a viewing-angle-improving effect and the prevention of the reduction in a front luminance at higher levels while preventing the change in color. A film for improving a viewing angle, which is produced by melt-extrusion-molding a mixture composed of at least two resins that are immiscible with each other, and which is characterized in that the ratio of the transmittance (I30) at an output angle of 30° to the transmittance (I0) at an output angle of 0° of light having a wavelength of 440 nm in the main diffusion direction (i.e., I30/I0×100) is 0.25-5.5%.
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