Patent ID: 9638840
Date: 2017-05-02
CPC Classifications: B29D,B32B,G02B,G02F,G03F

Claim:
1. A light diffusion member comprising: a light transmissive substrate; a plurality of light shielding layers which are scatteringly provided on one surface of the light transmissive substrate; a light diffusion section which is provided in a region other than formation regions of the plurality of light shielding layers, the light diffusion section being provided on the one surface of the light transmissive substrate; and light scattering bodies disposed on a light emitting side of the light diffusion section; wherein the light diffusion section includes a light emitting end surface on a substrate side of the light diffusion section and a light incident end surface including a first area greater than a second area of the light emitting end surface on a side opposite to the substrate side, a height from the light incident end surface to the light emitting end surface of the light diffusion section is greater than a thickness of the plurality of light shielding layers, the plurality of light shielding layers are disposed non-periodically as viewed from a normal direction of the one surface of the light transmissive substrate, a plurality of opening portions are provided at the light incident end surface and opposite to the plurality of light shielding layers, each of the plurality of opening portions having a same shape to each of the plurality of light shielding layers, and the light scattering bodies are provided in a separate layer provided on a second surface of the light transmissive substrate.