Glass fluorescent powder slice with multi-layer structure and preparation method therefor, and light-emitting device
US11053161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2015 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0361
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A multi-layer glass phosphor powder sheet and its preparation method, and a light-emitting device. The preparation method for the multi-layer glass phosphor powder sheet includes: mixing a first optical functional material, a glass powder and an organic carrier to obtain a first slurry, and mixing a second optical functional material, the glass powder and the organic carriers to obtain a second slurry; coating the first slurry on a first substrate, and drying it at a first temperature so that at least some of the organic carrier is volatilized, to obtain a first functional layer, the first temperature being lower than a softening point of the glass powder; coating the second slurry on the surface of the first functional layer, to obtain a second functional layer; and sintering the first substrate on which the functional layers are coated at a second temperature, to obtain the multi-layer glass phosphor powder sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.