Enamel composition for dielectric layers, white pigments with improved wettability contained therein and plasma display panel containing the dielectric layer
US6774562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2000 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jan 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24926
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention refers to an enamel composition for producing reflecting dielectric layers in plasma display panels, comprising as layer forming constituents 70 to 97% by wt. of a glass frit composition and 3 to 30% by wt. of a particulate whitening material. The whitening material comprises one or more thermally deactivated white pigments, which have been made by a process comprising heating of at least one white pigment in the absence or presence of a glass frit having a softening temperature of less than 600° C. at a temperature of 600 to 1000° C. for 0,1 to 10 hours.The invention further refers to a method for improving the wettability of white pigments by the above said thermal treatment.The enamel is used for producing a reflecting white dielectric layer in plasma display panels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.