Flat panel detector for radiation imaging with reduced trapped charges
US6172369A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Jul 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/18
Abstract
A flat panel detector for radiation imaging includes an array of transistor switches each of which is associated with a pixel electrode. A radiation transducer including a top electrode and a radiation conversion layer is disposed over the array. Inhibiting mechanisms are positioned over dead zones between adjacent pixel electrodes to inhibit the accumulation of charge in the radiation conversion layer at the dead zones when the top electrode is biased and the flat panel detector is exposed to radiation. In one embodiment, the inhibiting mechanism is constituted by islands formed of semiconductor material between the array and the radiation transducer. Each island is positioned over a dead zone between adjacent pixel electrodes and contacts a pixel electrode to allow charges accumulated on the islands to drift to the pixel electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.