Phosphor screen with double layered blue phosphor and method thereof
US5866977A · kind A · utility
3Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A double layer phosphor screen comprising a panel having black matrix for a CRT and red, green and blue phosphors on the panel, wherein the phosphor is formed on which the black matrix is not formed and the blue phosphor is formed in double layers, and the CIE Y color coordinate of the blue phosphor for a first layer formed on the panel is 0.045 to 0.065, the CIE Y color coordinate of the blue phosphor for a second layer formed on the first layer is 0.075 to 0.095, improves brightness, color reproducing range and contrast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.