Scintillator Transfer Layering to Prevent Moisture Deterioration
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Solution Overview
Problem
The existing manufacturing method for radiation imaging apparatuses exposes the scintillator to air, leading to potential deliquescence and deterioration of its characteristics, which can decrease the resolution and reliability of the imaging apparatus.
Innovation Solution
A manufacturing method where a moisture-preventing functional layer is formed on a support substrate before forming the scintillator, and this layer is used to bond the scintillator to a sensor substrate, thereby preventing water permeation and exposure to air, thus protecting the scintillator from deliquescence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the scintillator is formed on a substrate and then separated from the substrate, then the substrate can be selected without considering radiation permeability and light reflectivity, but the scintillator surface exposed to outside air increases and may deliquesce with water contained in the outside air, deteriorating the characteristics of the scintillator
Solution Approach 1:
The patent applies composite materials by creating a multi-layer structure consisting of a support substrate, a functional layer, and a scintillator. The functional layer acts as a protective barrier between the scintillator and the support substrate, preventing direct contact while maintaining structural integrity. This composite structure allows the support substrate to be made from materials not suitable for direct scintillator contact, while the functional layer ensures scintillator protection against deliquescence.
Solution Approach 2:
The functional layer serves as an intermediary between the support substrate and the scintillator. It prevents direct interaction between the scintillator and the support substrate, while also protecting the scintillator from exposure to outside air and water. This intermediary layer resolves the contradiction by enabling flexible substrate material selection without compromising scintillator reliability.
2Ease of manufacture
If the scintillator surface is exposed to outside air during manufacturing, then the manufacturing process is simplified, but the scintillator may deliquesce with water contained in the outside air, resulting in deteriorated characteristics and reduced resolution
Solution Approach 1:
The functional layer is formed on the support substrate before the scintillator is deposited onto it. This preliminary action ensures that the protective barrier is already in place to prevent deliquescence during the manufacturing process, allowing the scintillator to be handled and processed without direct exposure to outside air, thereby maintaining manufacturing precision and resolution.
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
This method effectively suppresses the deterioration of the scintillator characteristics and improves the reliability and resolution of the radiation imaging apparatus by preventing water exposure and absorption.
Implementation Method 1
a functional layer including a moisture preventing layer configured to suppress permeation of water
Data Source
AI summary
A manufacturing method of a radiation imaging apparatus in which a sensor substrate and a scintillator are bonded by a bonding member, is provided. The method includes: forming, on a support substrate, a functional layer including a moisture preventing layer configured to suppress permeation of water; forming the scintillator on the support substrate with the functional layer arranged thereon; and separating, from the support substrate, at least a part of the scintillator together with the functional layer.