Display device and method for manufacturing same
US12124130B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2023 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Nov 8, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133605
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display device includes a backlight unit including: a substrate; a Light Emitting Diode (LED) disposed on a surface of the substrate; and a refractive cover configured to surround the LED. The refractive cover includes: a first refractive surface to: be spaced apart from the LED by a preset distance, be positioned on the upper surface of the substrate, be parallel to an axis of the LED or be inclined within one angle from the axis of the LED; a second refractive surface to be a curved surface in which an angle between a tangent line and the axis of the LED increases from a region connected to another upper portion of the first refractive surface toward a direction of the axis of the LED; and a third refractive surface to be connected to an portion of the second refractive surface and be perpendicular to the axis of the LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.