Image pick-up tube target
US4816715A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jul 9, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/456
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is disclosed an image pick-up tube target comprising an N-type conductive film formed on a transparent substrate, and a P-type photoconductive film in rectifying contact with the N-type conductive film and comprising a first layer containing As and Se, the average concentration of As in the first layer being below 8% by weight, a second layer containing As and Se, a third layer containing As and Se, the concentration of As being in the range of 8 to 20% by weight and thickness of the third layer being in the range of 5 to 50% of the total thickness of the P-type photoconductive film, in the order named, and a beam landing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.