LED backlight, backlight module, and display apparatus
US10527886B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2018 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Oct 30, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133614
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An LED backlight, a backlight module, and a display apparatus are provided. The LED backlight includes: a substrate; a plurality of LED chips disposed on a first surface of the substrate and electrically connected to the substrate, where each LED chip includes a first light emitting surface disposed on a side of the LED chip facing away from the substrate and at least one second light emitting surface, and a plane where the at least one second light emitting surface is located intersects with the substrate; a plurality of prism-shaped light guide structures disposed between adjacent LED chips and in a space defined between two adjacent second light emitting surfaces of adjacent LED chips, where the prism-shaped light guide structures have an index of refraction of n1; and a first medium filling the space between the LED chips and the prism-shaped light guide structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.