Radiation image detector

Abstract

A radiation image detector comprising a layer structure arranged in the order listed below: a charge storage layer that generates and stores charges by receiving recording electromagnetic waves representing a radiation image; a photoconductive layer that generates charges by receiving readout light and an electrode layer having a plurality of first line electrodes that transmit readout light and are arranged in parallel at a predetermined distance. Also, a second wire electrode having electrical connection with the photoconductive layer is located between every two of the first wire electrodes, and an opaque wire insulator blocking readout light is located at each second wire electrode on the side opposite to the photoconductive layer. superior. The opaque wire insulator has a width such that side portions of the opaque wire insulator are located between opposing side portions of adjacent first and second wire electrodes.

Description

technical field [0001] The present invention relates to a radiation image detector which receives radiation representing a radiation image, records the radiation image therein, and outputs a signal proportional to the radiation image recorded therein when scanned with readout light. Background technique [0002] Various types of radiation image detectors have been proposed and put into practical use in medicine and other industrial fields. These detectors generate an electrical charge by receiving radiation transmitted through the object under test and store the charge to record a radiation image of the object under test. [0003] Such a radiation image detector is proposed, for example, in US Patent No. 6,770,901. The detector comprises a layer structure arranged in the following order: a first electrode layer that transmits radiation; a recording photoconductive layer that generates charges by receiving radiation; a charge transport layer that acts as an insulator against...

AI Technical Summary

Problems solved by technology

[0010] In the radiation image detector 50 or 60 disclosed in Japanese Unexamined Patent Publication No. 2003-218335, each opaque film 55c or 65c extends only to the side edge of each wire electrode 55b or 65b, as shown in FIG. 10B or 10C As shown in , to release the charge in the region of the readout photoconductive layer 44 adjacent to the edge of each of the line electrodes 55b or 65b, resulting in a greater decrease in the readout efficiency

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