Radiation Detector Protection Layer Reinforcement
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Solution Overview
Problem
The existing radiation detectors used in medical radiographic apparatuses face issues with the vapor proof protection film deteriorating over time or being damaged externally, leading to potential peeling and breaking of the protection layer, which compromises the detector's functionality, especially in applications like mammography where precise imaging is required.
Innovation Solution
The radiation detector incorporates a protection layer with a reinforcement member that extends from the substrate to cover the end portion of the protection layer, enhancing adhesion and preventing rolling or breaking, while maintaining the detector's functionality by using a combination of insulation and flexible materials to secure the vapor proof effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protection layer is extended to the end surface of the substrate to ensure vapor proof effect, then the vapor proof reliability is improved, but the protection layer becomes prone to rolling and breaking at the end portion
Solution Approach 1:
The patent applies composite materials by combining the protection layer (first material) with the reinforcement member (second material having different physical properties) to create a layered composite structure. This composite construction allows the protection layer to maintain its vapor proof function while the reinforcement member provides enhanced mechanical strength and prevents rolling at the end portions, thereby resolving the contradiction between vapor proof reliability and structural strength.
2Stability of the object's composition
If the bonding length of the protection layer is increased to prevent peeling, then the adhesion is improved, but the device complexity increases
Solution Approach 1:
The patent segments the protective structure into distinct functional components: the protection layer for vapor proofing and the reinforcement member for mechanical strengthening. This segmentation allows each component to be optimized independently - the protection layer can be bonded with sufficient length for adhesion stability, while the reinforcement member is added specifically at end portions where needed, avoiding unnecessary complexity in the overall structure.
3Area of stationary object
If the distance between phosphor layer and side surface is reduced to expand imaging area, then the imaging coverage is improved, but the vapor proof effect is compromised
Solution Approach 1:
The patent addresses the spatial constraint by adding a reinforcement member that extends in the vertical dimension from the end surface toward the protection layer. This dimensional addition provides mechanical support at the critical end portions, enabling the protection layer to extend closer to the side surfaces (expanding imaging area) while maintaining vapor proof integrity through the reinforcement provided by the reinforcement member.
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 configuration effectively suppresses the breaking of the protection layer, ensuring the detector's integrity and functionality over time, even when exposed to external factors, thereby maintaining the vapor proof effect and ensuring reliable imaging, especially for breast radiography.
Implementation Method 1
a vapor proof protection film as a protection layer has bent portions and an end portion... The bonding length of the vapor proof protection film bonded on the bottom surface of the substrate is a length by which a vapor proof effect may be obtained
Implementation Method 2
a reinforcement member which is formed from the lower surface of the substrate to the surface of the protection layer and which covers the end portion of the protection layer... improving adhesion property of the end portion of the protection layer
Data Source
AI summary
A radiation detector includes a substrate, a lower electrode disposed on the substrate, a radiation detecting layer formed on the upper surface of the lower electrode, an upper electrode formed on the upper surface of the radiation detecting layer, a protection layer which is formed on the upper electrode, whose end portion extends to an end surface of the substrate and which covers the upper electrode, and a reinforcement member which is formed from the lower surface of the substrate to the surface of the protection layer and which covers the end portion of the protection layer.