Digital X-ray image detector using an FED device
US7781738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2006 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Feb 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/246
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a digital X-ray image detector using an FED, including an upper substrate and a lower substrate disposed to face each other; an anode formed beneath the upper substrate; a photoconductive layer formed beneath the anode for forming electron-hole pairs using X-rays; a cathode formed on the lower substrate; an emitter formed on the cathode for emitting electrons of the cathode; a gate electrode formed on an insulating layer provided around the emitter on the cathode; and a data processing part for converting information about the electron-hole pairs formed in the photoconductive layer by the X-rays, transferred from the anode, to digital data through signal processing including filtering, amplification, storage, or A/D conversion. The high performance digital X-ray image detector of this invention has a high image resolution and a large area, is easy to manufacture and process compared to conventional processes, and has excellent detection efficiency of electrical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.