Flexible Radiographic Sensor Stiffness and Weight Trade-off
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Solution Overview
Problem
Radiographic imaging apparatuses with flexible base materials face challenges in balancing bending stiffness and weight, as increasing stiffness to resist impacts often leads to increased weight, and existing solutions compromise either stiffness or weight.
Innovation Solution
A radiographic imaging apparatus design featuring a substrate with pixels on a flexible base material, a circuit unit, a fixing plate with a larger area than the base material, and a reinforcing substrate with higher stiffness, along with a housing that houses these components, while using a pressure-sensitive adhesive layer and a sealing member to enhance stiffness without excessive weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid plate is provided on the surface of the photoelectric conversion panel to improve bending stiffness, then the bending stiffness is improved, but the weight of the entire radiographic imaging apparatus is increased
Solution Approach 1:
The patent combines the reinforcing plate with the housing structure to form an integrated assembly. The reinforcing plate is positioned within the housing and works together with the housing walls to provide structural support, eliminating the need for separate heavy reinforcement components while maintaining bending stiffness
Solution Approach 2:
The reinforcing plate is strategically positioned at specific locations within the housing where structural support is most needed, rather than uniformly reinforcing the entire structure. This localized reinforcement provides adequate bending stiffness while minimizing additional weight
2Weight of moving object
If the substrate uses flexible base material to reduce weight, then the weight is reduced and imaging becomes easy, but the substrate is easily deflected when load or impact is applied
Solution Approach 1:
The patent creates a composite structure combining the flexible base material substrate with a rigid housing and reinforcing plate. The flexible substrate maintains lightweight properties and flexibility for easy imaging, while the rigid housing and reinforcing plate provide impact resistance and prevent excessive deflection when loads are applied
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 design achieves increased bending stiffness and reduced weight, improving impact resistance while maintaining a lightweight and efficient imaging system.
Implementation Method 1
a conversion layer, such as a scintillator, which converts radiation into light
Implementation Method 2
using a pressure-sensitive adhesive layer and a sealing member to enhance stiffness without excessive weight
Data Source
AI summary
A sensor substrate is provided with a plurality of pixels for accumulating electrical charges generated depending on light converted from radiation in a pixel region of a flexible base material. A circuit unit includes at least one of a driving substrate, a signal processing substrate, or a control substrate and is electrically connected to the sensor substrate. A fixing plate fixes the circuit unit. A conversion layer is provided on a first surface opposite to a second surface of the fixing plate on which the circuit unit is fixed, is provided in a state where the second surface opposite to the fixing plate side faces the first surface of the base material on which the pixels are provided, and converts radiation into light. A housing houses the sensor substrate, the circuit unit, the fixing plate, and the conversion layer.