Thin film type controlled viewing window back light unit and thin flat type controlled viewing window display using the same
US9910208B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 1, 2015 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jan 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a thin film type controlled viewing window back light unit and a thin flat type Controlled Viewing window Display using the same. The present disclosure suggests a thin film type back light unit which can include: a base film having a width and a length, and including a high refractive film and a low refractive film stacked on the high refractive film; an incident pattern disposed at one side of a bottom surface of the base film; a reflective pattern disposed at an opposite side apart from the one side with the length of the bottom surface of the base film, and covering the width of the opposite side; a light radiating pattern disposed on an upper surface of the base film; a holographic film for controlling a viewing-window disposed on the light radiating pattern; and a light source being apart from the incident pattern, and providing an incident light to the incident pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.