Radiation Detection Panel with Random Reflective Surface Structure
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Solution Overview
Problem
Existing radiation detection panels face issues with image quality degradation due to the formation of periodic uneven surfaces in the light reflective layer, which can detect irregularities as image artifacts, and are prone to deformation and peeling during the manufacturing process.
Innovation Solution
A radiation detection panel with a light reflective layer composed of adhesive and light scattering particles, featuring a random arrangement of protruding and recessed surfaces, is manufactured by spraying a mixture of adhesive, light scattering particles, and solvent onto the scintillator layer and allowing it to dry, forming a non-uniform surface structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a light reflective layer is formed by applying a mixture material with a dispenser and drying it, then the layer can be manufactured, but periodic uneven surfaces are formed causing image artifacts
Solution Approach 1:
The patent changes the application parameters by switching from a dispenser to a spray method, and modifies the material composition by adding light scattering particles to the adhesive mixture. This creates random surface unevenness instead of periodic patterns, eliminating image artifacts while maintaining manufacturability
Solution Approach 2:
The invention intentionally creates asymmetric, random surface unevenness in the light reflective layer through spray application. This random asymmetry prevents the formation of periodic patterns that cause image artifacts, while still providing effective light reflection and scattering functionality
2Ease of manufacture
If the light reflective layer is formed with conventional methods, then manufacturing is simple, but the panel is prone to deformation and peeling
Solution Approach 1:
The patent creates a composite material system by combining adhesive, light scattering particles, and solvent in a sprayable mixture. This composite formulation improves adhesion to the scintillator layer and panel stability while maintaining ease of application through spray deposition
Solution Approach 2:
The invention uses spray deposition (a pneumatic/hydraulic application method) to apply the light reflective layer material. This method provides better control over material distribution and adhesion compared to dispenser application, reducing deformation and peeling while keeping the manufacturing process simple
3Ease of manufacture
If the light reflective layer has periodic uneven surfaces, then manufacturing is straightforward, but image quality degrades due to artifacts
Solution Approach 1:
The patent changes the surface topology parameter from periodic to random unevenness by modifying the application method to spraying. This parameter change eliminates the periodic patterns that cause image artifacts while maintaining the light reflective function, thereby improving image quality without complicating manufacturing
Solution Approach 2:
The invention uses light scattering particles to create a random surface structure that copies and diffuses light paths in a controlled manner. This random copying of light paths prevents systematic artifacts while maintaining effective light reflection for high-quality image detection
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 solution enhances image quality by improving fluorescence reflection efficiency and reducing deformation, resulting in improved sensitivity and image clarity without deforming the panel.
Implementation Method 1
a scintillator layer provided on the photoelectric conversion substrate, having one surface facing the photoelectric conversion substrate and another surface located on a side opposite to the one surface, and converting radiation into fluorescence
Implementation Method 2
a photoelectric conversion substrate including a plurality of photoelectric conversion units converting fluorescence into electric signals
Implementation Method 3
a light reflective layer provided on the other surface, formed of an adhesive and light scattering particles, and reflecting fluorescence generated in the scintillator layer toward the plurality of photoelectric conversion units
Implementation Method 4
a light reflective layer provided on the other surface, formed of an adhesive and light scattering particles, and reflecting fluorescence generated in the scintillator layer toward the plurality of photoelectric conversion units
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
This radiation detection panel comprises: a photoelectric conversion substrate (2) having a plurality of photoelectric conversion units (2b); a scintillator layer (5) provided on the photoelectric conversion substrate (2) and having one surface (5a) facing the photoelectric conversion substrate (2) and another surface (5b) positioned on the side opposite of the one surface (5a); and a reflective layer (6) that is provided to the other surface (5b) and is formed by an adhesive (61) and light scattering particles (62), wherein the reflective layer (6) has a facing surface (63) facing the other surface (5b), and a recess-and-protrusion surface (64) positioned on the side opposite of the facing surface (63), the recess-and-protrusion surface (64) has surfaces of a plurality of protrusions (64a) and surfaces of recesses (64b), the plurality of protrusions (64a) have protrusions (64a) adjacent to the respective protrusions (64a), and the spacing from the respective protrusions (64a) to the adjacent protrusions (64a) is random.