Light diffusion member, light diffusion member with polarizing plate, and method for fabrication of light diffusion member with polarizing plate
US9594194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2014 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Jan 28, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1052
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A 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 greater than the thickness of the light shielding layers. A hollow portion of the light diffusion portion is formed in the formation region of the light shielding layers, and air is present in the hollow portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.