Scintillator Panel Cushioning Layer for Uniform Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional scintillator panels with phosphor layers on rigid substrates face challenges in achieving uniform contact with planar light-receiving elements due to substrate irregularities, leading to image unevenness and reduced sharpness of X-ray images.
Innovation Solution
A scintillator panel design incorporating a cushioning layer between the support and phosphor layer, which absorbs irregularities and allows uniform contact with the planar light-receiving element, using light-reflecting or light-absorbing particles like titanium dioxide to enhance image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid substrate is used to support the phosphor layer, then the structural stability is improved, but the uniform contact with the planar light-receiving element deteriorates due to substrate irregularities and phosphor crystal height variations
Solution Approach 1:
A cushioning layer made of flexible material is introduced as an intermediary between the rigid substrate and the phosphor layer. This cushioning layer absorbs irregularities from both the substrate and phosphor crystal height variations, enabling uniform contact with the planar light-receiving element while maintaining structural stability.
Solution Approach 2:
The cushioning layer is constructed from flexible material that can deform to accommodate surface irregularities. This flexibility allows the layer to conform to the underlying substrate and phosphor layer variations, ensuring intimate contact with the light-receiving element without compromising the overall structural integrity.
2Manufacturing precision
If a spacer is used to ensure uniform contact between the scintillator panel and the planar light-receiving element, then the contact uniformity is improved, but the light sharpness deteriorates due to light scattering in the gap
Solution Approach 1:
The cushioning layer is made of flexible material that can deform under pressure to eliminate gaps between the phosphor layer and the planar light-receiving element. This flexibility ensures intimate contact without requiring a rigid spacer, thereby preventing light scattering and maintaining image sharpness.
3Device complexity
If the phosphor layer is directly deposited on the substrate, then the device complexity is reduced, but the contact uniformity deteriorates due to irregularities in the substrate and phosphor crystal heights
Solution Approach 1:
A cushioning layer is introduced as an intermediary between the substrate and phosphor layer. This additional layer absorbs irregularities from both the substrate and phosphor crystal height variations, enabling uniform contact with the planar light-receiving element while maintaining structural stability.
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 cushioning layer ensures uniform contact and reduces image unevenness and in-plane modulation transfer function distribution, improving the sharpness and luminous efficiency of X-ray images.
Implementation Method 1
the phosphor layer is pressed against the planar light-receiving element by the application of a pressure from the support side through the cushioning layer
Implementation Method 2
a phosphor (scintillator) layer made of an X-ray phosphor that, when illuminated with X-rays, convert the radiations into visible light that is emitted
Implementation Method 3
The cushioning layer preferably includes light-reflecting particles or light-absorbing particles. The light-reflecting particles preferably include at least titanium dioxide.
Data Source
AI summary
Provided is a scintillator panel realizing reduced image unevenness and the like by virtue of having a cushioning layer between a support and a phosphor. The cushioning layer absorbs irregularities on the phosphor layer when the scintillator panel is compression bonded to a planar light-receiving element and thereby allows the phosphor layer to be in contact with the planar light-receiving element without any gaps in the interface. The scintillator panel includes, in the order named, a support, a cushioning layer disposed on a surface of the support, and a phosphor layer deposited on the surface of the cushioning layer, the cushioning layer having a specific thickness, the phosphor layer being configured to be placed into uniform contact with a surface of a planar light-receiving element when the phosphor layer is pressed against the planar light-receiving element by the application of a pressure from the support side.