Illumination device including third prism sheet and display device including the same
US12392954B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2024 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Aug 9, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133615
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device that includes a light source, a light guide plate featuring a first end face, a first main surface, a second main surface, and a first prism sheet is provided. The first prism sheet includes a third main surface, facing the second main surface of the light guide plate, and a fourth main surface. The second main surface of the light guide plate is provided with a first inclined surface that has an inclination rising from a side opposite the light source side toward the light source side in a first direction. The fourth main surface of the first prism sheet is provided with multiple first prisms extending along the first direction and disposed along a second direction. Each first prism includes a first base parallel to the second direction, and a pair of first oblique sides rising from both ends of the first base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.