Light sensitive screen
US4419604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Apr 24, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/191
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a light sensitive screen including at least a light-transmitting conductive film and a photoconductive layer, the light-transmitting conductive film being arranged on a side of incidence of light, characterized in that the photoconductive layer is constructed of a single layer or a plurality of layers of one or more photoconductive substances, at least one of such photoconductive substance layers being formed of an amorphous silicon material which contains at least 5 atomic-% to 30 atomic-% of hydrogen, whose optical forbidden band gap is 1.65 eV to 2.25 eV and whose peak component in an infrared absorption spectrum at a wave number of 2,100 cm.sup.-1 is greater than that at a wave number of 2,000 cm.sup.-1. Various characteristics of an imaging device provided with the light sensitive screen, such as dark current, lag and after image characteristics, are improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.