X-ray detector with integrating readout chip for single photon resolution
US9046614B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 2010 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Feb 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/17
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An X-ray detector contains a layer of photosensitive material and an N×M array of photo-detector diodes disposed in the photosensitive material. Each of the diodes has a bias potential interface and a diode output interface. The bias potential interface is connected to a bias potential. The X-ray detector further has an N×M array of high gain, low noise readout unit cells, one readout unit cell for each diode. Each cell contains an input interface connected to the diode output interface, a high-gain voltage amplifying device having an integration capacitor, a first switch in parallel to the integration capacitor and a sample/hold capacitor disposed between a second switch and third switch. The sample/hold capacitor is connectable to the voltage amplifying device via the second switch and is connectable to a signal output line. A multiplexer contains a row select and a column select circuit allowing access to each readout cell unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.