LED lightbar and backlight unit
US10317604B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 2017 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Dec 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133317
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-emitting diode (LED) lightbar includes a flexible print circuit, a plurality of LEDs arranged on the flexible print circuit, and a light guiding film arranged on the flexible print circuit. The light guiding film is arranged on two adjacent LEDs. The light guiding film includes an incident surface and an emitting surface. Two sides of the incident surface of the light guiding film are attached to emitting surfaces of the two adjacent LEDs. Compared with the related art, a light guiding film is arranged on emitting surfaces of any two neighboring LEDs in the present disclosure. Light beams emitted by the LEDs enter the light guiding film partially. The light guiding film reflects the partial light beams are transferred to the gap between the LEDs. Therefore, the hotspot phenomenon is well curbed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.