Plasma display panel and production method thereof and plasma display panel display unit
US7348729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2001 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Feb 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J11/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plasma display panel having excellent electron emission properties and a method of making the same. A plasma display panel is provided with a protective layer having a dense growth of columnar crystals formed on a dielectric layer. A middle layer can be provided for improving orientation of the columnar crystals. A heating step creates seed crystals to increase the width and growth of columnar crystals with a selective orientation and greater diameter. The area of any exposed surfaces on the protective layer becomes smaller and absorption of impurities decreases. A layer of grain crystals or an amorphic crystal layer is initially deposited on the dielectric layer to establish wider area seed crystals of a desired orientation. A vacuum evaporated complimentary protective layer can then be grown with the improved configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.