PLANAR LIGHT-EMITTING DEVICE AND ILLUMINATION MODULE

摘要

A planar light-emitting device is provided with a light source and a sheet-shaped light guide body which guides, in the surface direction, light that is introduced from the light source. A light extraction section is formed in the light guide body and scatters the light introduced from the light source such that the light is emitted from a surface side. The light extraction section comprises a plurality of dot-shaped ink layers formed by printing. The dot-shaped ink layers have an external diameter from 10 to 100 µm, a thickness from 0.5 to 10 µm, and contain at least 5 mass% of titanium oxide.