Display backlight unit having multiple light guide plates, and method of manufacturing
US10018771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2015 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Jun 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0051
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A display device with a display panel, and backlight unit including a first light guide plate (LGP) having first and second optical materials, a second LGP disposed between the first LGP and the display panel, light sources configured to provide light to the first LGP and the second LGP, and a diffuser plate in a lower portion of the second LGP. The first LGP configured such that light from a light source is guided by the second optical material and emitted towards the display panel through the first optical material; the second LGP configured to emit light towards the display panel using the diffuser plate. A controller controls the light sources to provide light to the first LGP if a three-dimensional (3D) image is displayed on the display panel, and to the second LGP if a two-dimensional (2D) image is displayed on the display panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.