Light guiding sheet, manufacturing method thereof, back light using the light guiding sheet, and liquid crystal display unit using the back light
US5764322A · kind A · utility
42Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Jun 24, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/901
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display unit using a back light uses a light guiding sheet to transfer to a liquid crystal display panel the light from a light source, and provides a liquid crystal display unit where a display of images is obtained with uniform brightness and high brightness. The light guiding sheet is formed by stacking two or more kinds of transparent amorphous layers different in refractive index at a predetermined angle with respect to a sheet surface. This light guiding sheet is constructed so as to be employed in a back light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.