Display device comprising a light-guide film having a plurality of waveguide parts that have a refractive index
US9581752B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Jan 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0078
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A display device includes a display panel. A light-guide film is attached to a light-incident surface of the display panel. The light-guide film includes a light reflecting layer, a light exiting layer between the light reflecting layer and the display panel, and waveguide parts situated between the light reflecting layer and the light exiting layer. The light exiting layer has exit openings at positions facing each waveguide part, with each exit opening also facing a sub-pixel unit in the display panel. The display device also includes a light source. An end of each waveguide part is in communication with the light source. The light-guide film replaces a conventional backlight unit such that a thinner design for the display device is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.