Optical sheet having irregularity portions, backlight device with optical sheet, and liquid crystal display device including a backlight device with optical sheet
US8553175B2 · kind B2 · utility
1Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2007 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Mar 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical sheet, a backlight device, and a liquid crystal display device are provided. The beam-condensing optical sheet includes a large number of irregularity portions arranged on one main surface of a light-transmissive base, in which a pitch of arrangement of the irregularity portions is 110 μm or more and 330 μm or less, and surface roughness (Ra) of the irregularity portion is 0.1 μm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.