Light source, display device, portable terminal device, and ray direction switching element
US7349043B2 · kind B2 · utility
10Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2005 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Oct 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133524
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source is provided including, a backlight that emits light in a planar shape, a ray direction regulating element that regulates a direction of light made incident from the backlight and emits the light and in which a transparent area for transmitting light and an absorption area for absorbing light are formed alternately in a direction perpendicular to a light regulating direction thereof, and a transparent and scattering switching element that is capable of switching a state in which light made incident from the ray direction regulating element is transmitted and a state in which the light is scattered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.