Substrate design for optimized performance of up-conversion phosphors utilizing proper thermal management
US7075707B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2004 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Nov 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods and compositions for using an up-conversion phosphor as an emitting material in a reflective displays and Polymer compositions for display mediums, and blue green red (BRG) display mediums. Roles of the pumping duration and character on the temperature and the efficiency of the up-conversion process in (Ytterbium, Erbium or Thulium) co-doped fluoride crystals are set forth. Methods, compositions and display mediums for using up-conversion phosphors in both reflective and transmissive displays in which the substrate and pixel shapes are designed to maximally remove heat deposited in the emitting material and thereby improve the efficiency of up conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.