Display device
US10324249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2016 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Dec 26, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133507
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A display device includes a prism sheet between a display cell and a light guiding plate. The prism sheet includes a plurality of prisms having a constant apex angle continuously arranged in a second direction on a surface thereof opposed to a light-exiting surface of the light guiding plate. Each of ridge lines of the prisms extends in a first direction. Each prism has a first inclined face on a side on which light from the light guiding plate is incident and a second inclined face on a side reflecting the incident light. An area of the first inclined face is made smaller than an area of the second inclined face, and an area of a light-emitting region in the prism sheet is made larger than an area of a non-light-emitting region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.