Method for producing LED by one step film lamination
US11923483B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 18, 2018 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Sep 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0361
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The present invention relates to method for producing LED by one step film lamination. The method comprises: laminating two or more LEDs with two or more colored phosphor films by one step film lamination; wherein each of the colored phosphor film comprises each other different colored phosphor composition which has a Maximum tan δ; and the difference of each Maximum tan δ varies within a range of 0-30%. In the present invention, the method for producing a LED may greatly improve production efficiency (i.e., dual and multi-color LEDs in one step) and lower cost of ownership. Further, it may improve uniformity of phosphor dispersion, thereby improve color quality of LEDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.