| 摘要 |
A converging sheet includes a light-emerging-side lens member formed of a plurality of unit lenses of convex shape that are arranged on a light-emerging side, and a scattering layer that is formed along a surface of each unit lens and scatters light. The scattering layer includes light diffusing particles. A thickness t of the scattering layer is equal to or more than one-tenth the lens pitch p. The converging sheet satisfies the following relationships: dx((t+h+p)/phi)>50% and dx(t/phi)<50%, in which d represents a volume ratio (%) of the light diffusing particles mixed in the scattering layer relative to the scattering layer, phi represents an average grain diameter (mm) of the light diffusing particles, and h represents a height from the apex to a bottom of the convex shape of the unit lens. |
