Patent · US Expired

X-ray image sensor

US5729021A · kind A · utility

29Cited by

7References

20Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Andreas Brauers · Aachen, DE
Ulrich Schiebel · Aachen, DE

Key dates

Filing date	Sep 11, 1996
Grant date	Mar 17, 1998
Priority date	—
Expiry date	Sep 11, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH10F39/8057
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An x-ray image sensor (1) with a lead-oxide photoconductor layer (6) positioned between collecting electrodes (3) and a common electrode (2) is provided with a passivation layer (7) which separates the lead-oxide from the metal of the common electrode to counteract degradation of the photoconductor layer due to chemical reactions between then metal of the common electrode and the lead-oxide. A bias layer (8) is provided between the common electrode (2) and the photoconductor layer (6) and a cladding layer (9) is provided between collecting electrodes (3) and the photoconductor layer (6) so as to avoid injection of charges into the photoconductor layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.