LIGHT DIFFUSION MEMBER, LIGHT DIFFUSION MEMBER WITH POLARIZING PLATE, AND METHOD FOR FABRICATION OF LIGHT DIFFUSION MEMBER WITH POLARIZING PLATE

摘要

The light diffusion member includes a substrate having light transmissivity, a plurality of light shielding layers, and light diffusion portions. The light diffusion portions have a light-emitting end surface, a light incident end surface which has a larger area than the area of the light-emitting end surface, and a reflecting face. Light which enters from the light incident end surface is anisotropically diffused in an azimuth direction seen from a normal direction of the substrate, and the height from the light incident end surface to the light-emitting end surface of the light diffusion portion is configured to be greater than the thickness of the light shielding layers. The azimuth direction where the diffusion by the light diffusion portion is relatively strong, and any one side making up the outer shape of the substrate, are generally parallel. The planar shape of the light shielding layers seen from the normal direction of one face of the substrate is an anisotropic shape having at least a major axis and a minor axis. A hollow portion sectioned by the formation regions of the light diffusion portions is formed in the formation region of the light shielding layers, and air is present in the hollow portion.

主权项

1. A light diffusion member comprising:
a rectangular substrate having light transmissivity; a plurality of light shielding layers formed on one face of the substrate; and light diffusion portions formed on the one face of the substrate at regions other than the regions where the light shielding layers have been formed; wherein the light diffusion portions have
a light-emitting end surface coming into contact with the substrate,a light incident end surface which faces the light-emitting end surface and has a larger area than the area of the light-emitting end surface, anda reflecting face coming into contact with the light-emitting end surface and the light incident end surface, and reflecting light entering from the light incident end surface, wherein light which enters from the light incident end surface is anisotropically diffused in an azimuth direction seen from a normal direction of the substrate, wherein the height from the light incident end surface to the light-emitting end surface of the light diffusion portion is greater than the thickness of the light shielding layers, wherein the azimuth direction where the diffusion by the light diffusion member proper is relatively strong, and any one side making up the outer shape of the substrate, are generally parallel, wherein the planar shape of the light shielding layers seen from the normal direction of one face of the substrate is an anisotropic shape having at least a major axis and a minor axis, and wherein a hollow portion sectioned by the formation regions of the light diffusion portions is formed in the formation region of the light shielding layers, and air is present in the hollow portion.