Absorbing graded nitride film for high contrast display devices
US4540914A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1982 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Dec 17, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A faceplate of a cathode ray tube is shown wherein a cathodoluminescent phosphor material 1 is deposited on glass faceplate 2. A metal nitride metal absorbing inhomogeneous film 3, where the metal is aluminum or silicon, is deposited on the back side of the phosphor material 1. To avoid unwanted reflections at the interface between the glass 2 and the phosphor 1, a homogeneous film 4 is optionally deposited on glass plate 2 prior to deposition of the phosphor film 1. Additionally, an anti-reflection coating 5 may also be optionally applied to the exterior of the glass plate 2 to eliminate reflection that would otherwise occur at the air-glass interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.