Image pick-up tube target
US4717854A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 19, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Feb 19, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/456
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An image pick-up tube target comprising an N-type conductive film formed on a transparent substrate, and P-type photoconductive film in rectifying contact with the N-type conductive film and comprising a first layer containing As, fluoride and Se, a second layer containing As, Te and Se, a portion of said second layer containing fluoride, a third layer containing As and Se, the composition of the third layer being different along the direction of thickness thereof, a fourth layer containing As and Se, wherein the concentration of As in the second layer varies continuously along the direction of thickness thereof, and in the second layer the minimum As concentration is located on the first layer side of the second layer and the maximum As concentration is located on the third layer side of the second layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.