Orderly patterned remote phosphor crystal material and method for preparation the material and its application
US10381526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2016 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Mar 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0361
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provide an orderly patterned remote phosphor crystal material and method for preparation the material and its application, which adopts short-pulse laser to make micro-structure arrays on the surface of phosphor crystal material to enhance the light extraction efficiency of the LED based on the material. The present invention overcomes the phosphor crystal material's properties of hard and dry/wet etching resistance and simplifies the processing steps, which accelerate the processing and improve the producing efficiency. The present invention is able to be performed under room temperature and environment friendly and the micro-structure is stable, which has broad application prospects in white LED field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.