White color light of organic light emitting diode
US9070891B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Oct 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/6572
Abstract
A white color light source of an organic light emitting diode is provided and is suitable for irradiating on plants. The white color light source includes a first color light and a second color light. A peak in the frequency spectrum of the first color light is within a first wavelength range. A peak in the frequency spectrum of the second color light is within a second wavelength range. The white color light source is at least formed by mixing the first color light and the second color light, wherein an intensity of a frequency spectrum of a wavelength range from 520 nm to 580 nm is substantially equal to or less than 20% of a total intensity of a frequency spectrum of the white color light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.