Radiation Detector Elastic Layer Bending Suppression
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Solution Overview
Problem
Radiation detectors with flexible base members often experience bending during separation from a support body, leading to potential damage to pixels or the conversion layer, as existing manufacturing methods lack a layer with sufficient restoring force on the opposite side.
Innovation Solution
Incorporating an elastic layer with a greater restoring force than the sensor substrate on the opposite side of the conversion layer, which helps to suppress bending and prevent damage during separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a flexible base member is used for the sensor substrate, then the weight of the radiation detector is reduced and imaging flexibility is improved, but bending occurs during separation from the support body causing damage to pixels or conversion layer
Solution Approach 1:
An elastic layer with higher elastic modulus than the sensor substrate is provided on the opposite side of the conversion layer. This elastic layer acts as a counterbalancing structure that compensates for the bending forces generated during separation, preventing damage to the sensor substrate and conversion layer while maintaining the lightweight flexible base member configuration
Solution Approach 2:
The radiation detector employs a composite structure combining the flexible base member, conversion layer, sensor substrate, and elastic layer with different material properties. The elastic layer has a higher elastic modulus than the sensor substrate, creating a composite structure that balances flexibility and resistance to bending damage during manufacturing separation
2Ease of operation
If the flexible base member is separated from the support body, then the sensor substrate can be freed for imaging, but bending occurs during the separation process
Solution Approach 1:
The elastic layer is pre-installed on the opposite side of the conversion layer before separation occurs. This preliminary configuration provides pre-counterbalancing force that opposes the bending tendency during separation, ensuring the sensor substrate remains substantially flat throughout the manufacturing process without requiring complex real-time control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The elastic layer effectively reduces bending-induced damage, ensuring the integrity of the sensor substrate and conversion layer during manufacturing, thereby enhancing the reliability of the radiation detector.
Implementation Method 1
a layer that has a greater restoring force with respect to bending than the sensor substrate
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
A radiation detector including: a sensor substrate including a flexible base member and a layer provided on a first surface of the base member and formed with plural pixels that accumulates electrical charge generated in response to light converted from radiation; a conversion layer provided on the first surface side of the sensor substrate, the conversion layer converts radiation into the light; and an elastic layer provided on the opposite side of the conversion layer to a side provided with the sensor substrate, the elastic layer having a greater restoring force with respect to bending than the sensor substrate.