Patent · US Active

LED device

US10450504B2 · kind B2 · utility

1Cited by

0References

20Claims

0Family size

Assignee

LEEDARSON LIGHTING CO., LTD. · CN

Inventors

Yanbiao Chen · Xiamen, CN
Liangliang Cao · Xiamen, CN
Huiwu Chen · Fujian, CN
Qiyuan Wang · Xiamen, CN

Key dates

Filing date	Feb 19, 2019
Grant date	Oct 22, 2019
Priority date	—
Expiry date	Feb 19, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/8514
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A LED device includes LED chips mounted on a substrate, a first fluorescent layer, a second fluorescent layer and a package housing. The LED chips emit a blue light. The first fluorescent layer has a first side facing to the LED chips for converting the blue light to a red light. The second fluorescent layer has a first side attached to a second side of the first fluorescent layer for converting the blue light to a red light emitted from a second side of the second fluorescent layer. The package housing holds the substrate and the first fluorescent layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.