초록 ▼

There is provided a light diffusion sheet comprising a light diffusion layer formed on a transparent substrate and containing a binder resin and resin particles that impart an uneven surface, wherein the light diffusion sheet has a total light transmission of 70.0% or more, haze of 80.0% or more, an

There is provided a light diffusion sheet comprising a light diffusion layer formed on a transparent substrate and containing a binder resin and resin particles that impart an uneven surface, wherein the light diffusion sheet has a total light transmission of 70.0% or more, haze of 80.0% or more, and a distinctness of transmission image of 25.0% or more. This light diffusion sheet is high luminance in the front direction, is excellent in light-diffusing property, does not require use of an expensive prism sheet which is readily susceptible to surface damage, and does not require careful handling.

대표청구항 ▼

1. A light diffusion sheet comprising a light diffusion layer formed on a transparent substrate and containing a binder resin and resin particles, said light diffusion layer having a first surface in contact with said substrate and a second surface, opposite said first surface, which is an exposed s

1. A light diffusion sheet comprising a light diffusion layer formed on a transparent substrate and containing a binder resin and resin particles, said light diffusion layer having a first surface in contact with said substrate and a second surface, opposite said first surface, which is an exposed surface of said light diffusion sheet, wherein said resin particles have a mean particle diameter of 16.0-30.0 μm and a substantially spherical shape, wherein said resin particles impart unevenness to said second surface of said light diffusion layer, wherein the light diffusion layer has a thickness of 25.0-50.0 μm, and wherein the light diffusion sheet has a total light transmission of 70.0% or more, haze of 80.0% or more, and a distinctness of transmission image of 25.0% or more. 2. The light diffusion sheet according to claim 1, wherein internal haze of the light diffusion sheet caused by difference between refractive indices of the binder resin and resin particles is less than 40%. 3. The light diffusion sheet according to claim 1, wherein difference between refractive indices of the binder resin and resin particles is within 0.05. 4. The light diffusion sheet according to claim 1 wherein said light diffusion layer has a thickness of 30.0-40.0 microns. 5. The light diffusion sheet according to claim 1 wherein said resin particles have a mean particle diameter of 18.0-28.0 μm. 6. The light diffusion sheet according to claim 4 wherein said resin particles have a mean particle diameter of 18.0-28.0 μm. 7. The light diffusion sheet according to claim 1 wherein said resin particles have a coefficient of variation of particle diameter distribution of less than 50%. 8. The light diffusion sheet according to claim 4 wherein said resin particles have a coefficient of variation of particle diameter distribution of less than 50%. 9. The light diffusion sheet according to claim 5 wherein said resin particles have a coefficient of variation of particle diameter distribution of less than 50%. 10. The light diffusion sheet of claim 1 wherein the content of the resin particles is 180-270 parts by weight per 100 parts by weight of the resin binder. 11. The light diffusion sheet of claim 4 wherein the content of the resin particles is 180-270 parts by weight per 100 parts by weight of the resin binder. 12. The light diffusion sheet of claim 7 wherein the content of the resin particles is 180-270 parts by weight per 100 parts by weight of the resin binder. 13. The light diffusion sheet of claim 8 wherein the content of the resin particles is 180-270 parts by weight per 100 parts by weight of the resin binder.