Scintillator Panel Solvent Permeation Blocking Film
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Solution Overview
Problem
The existing method for manufacturing radiation detection devices can lead to characteristic degradation of scintillator elements due to solvent permeation into columnar crystals when forming a light shielding layer, especially when the crystals are thicker, causing gaps to widen and affecting the device's performance.
Innovation Solution
A scintillator panel design featuring a substrate with separate scintillator sections, a solvent permeation blocking film on the sections' surfaces and sides, and a light shielding layer on the blocking film to fill gaps between sections, preventing solvent permeation and maintaining crystal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grooves for separating scintillator elements are filled with light reflection material to form a light shielding layer, then light shielding function is improved, but solvent permeation into columnar crystals causes characteristic degradation
Solution Approach 1:
A solvent permeation blocking film is introduced as an intermediary layer between the scintillator sections and the light shielding layer. This film prevents solvent from the light reflection material from permeating into the columnar crystals while still allowing the light shielding function to be achieved through the blocking film itself.
Solution Approach 2:
The light shielding function is segmented into two separate components: the solvent permeation blocking film and the light shielding layer. The blocking film prevents solvent permeation, while the light shielding layer provides the light shielding function, avoiding direct contact between solvent and scintillator crystals.
2Reliability
If thicker columnar crystals are used to improve detection performance, then radiation detection capability is improved, but gaps between crystals widen causing solvent permeation
Solution Approach 1:
The solvent permeation blocking film serves as a protective intermediary that shields the thicker columnar crystals from solvent permeation. This allows the crystals to be made thicker for improved detection performance without suffering from increased solvent penetration through widened gaps.
Solution Approach 2:
The solvent permeation blocking film is applied in advance to prevent solvent from reaching the columnar crystals during the light shielding layer formation process. This preliminary protective action prevents harmful solvent permeation before it can occur.
3Reliability
If light shielding layer is formed to fill gaps between scintillator sections, then light confinement is improved, but solvent permeation into crystals degrades characteristics
Solution Approach 1:
The solvent permeation blocking film is positioned between the scintillator sections and the light shielding layer, acting as a mediator that allows light confinement to be achieved while preventing solvent from the filling material from permeating into the scintillator crystals.
Solution Approach 2:
The gap-filling process is segmented into two functional layers: the solvent permeation blocking film that prevents solvent penetration, and the light shielding layer that provides light confinement. This segmentation allows both functions to be achieved simultaneously without interference.
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 design effectively prevents characteristic degradation and ensures secure confinement of scintillation light within each scintillator section, enhancing the device's performance and resolution.
Implementation Method 1
a scintillator panel for converting radiation into scintillation light
Implementation Method 2
solvent permeation blocking film formed on the upper surfaces and the side surfaces of the scintillator sections
Data Source
AI summary
A scintillator panel for converting radiation into scintillation light, includes a substrate having a front surface and a back surface, a plurality of scintillator sections formed on the front surface of the substrate so as to be separate from one another, and having upper surfaces and side surfaces extending from the upper surfaces toward the front surface of the substrate, solvent permeation blocking film formed on the upper surfaces and the side surfaces of the scintillator sections so as to cover the upper surfaces and the side surfaces of the scintillator sections, and a light shielding layer formed on the solvent permeation blocking film, that is for shielding the scintillation light, and the scintillator section is composed of a plurality of columnar crystals of a scintillator material, the solvent permeation blocking film is formed so as not to fill gaps between the side surfaces of the adjacent scintillator sections.