X-ray Detector Rewiring Unit for Cost Reduction
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Solution Overview
Problem
The existing x-ray detectors have high costs due to the equal areal extent of the evaluation unit and converter element, leading to increased production costs and mechanical instability.
Innovation Solution
An x-ray detector design with a converter element having a first electrode facing away from the evaluation unit and a pixelated second electrode facing towards it, along with a rewiring unit that has first contacts with a larger areal distribution on the converter element side and smaller areal distribution on the evaluation unit side, reducing the areal extent of the evaluation unit and enhancing mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the evaluation unit is made to have the same areal extent as the converter element to achieve mechanical stability, then mechanical stability is improved, but production costs increase
Solution Approach 1:
The patent introduces a rewiring unit as an intermediate layer between the converter element and evaluation unit, adding a dimensional layer to the stack arrangement. This allows the evaluation unit to have a smaller areal extent while maintaining mechanical stability through the multi-layer structure, resolving the contradiction between cost reduction and stability.
Solution Approach 2:
The rewiring unit acts as an intermediary component that electrically connects the converter element to the evaluation unit. This mediator allows the evaluation unit to be smaller in area while still achieving mechanical stability through the distributed contact structure of the rewiring unit, which spreads the connection area across multiple points.
2Ease of manufacture
If the areal extent of the evaluation unit is reduced to lower production costs, then production costs decrease, but mechanical stability worsens
Solution Approach 1:
The rewiring unit divides the electrical connection into multiple discrete contact points (first contacts and second contacts) with different areal distributions. This segmentation allows the evaluation unit to have a smaller overall areal extent while the distributed contact points maintain mechanical stability through multiple connection points across the stack.
Solution Approach 2:
The patent applies different areal distributions to different parts of the rewiring unit: first contacts have a first areal distribution facing the converter element, while second contacts have a second areal distribution facing the evaluation unit. This local differentiation allows optimization of each interface for its specific function while maintaining overall 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
This design reduces production costs and maintains mechanical stability, allowing for a cost-effective and efficient x-ray detector suitable for medical devices like computed tomography systems.
Implementation Method 1
In direct-converting x-ray detectors, the x-ray radiation or the photons can be converted into electrical pulses via a suitable converter material
Implementation Method 2
In order to counteract the incidence of scattered x-ray photons
Data Source
AI summary
A counting x-ray detector includes a converter element, a rewiring unit and an evaluation unit including pixel electrodes. In an embodiment, the converter element includes a first electrode on a surface facing away from the evaluation unit and a pixelated second electrode having a plurality of electrode elements on a surface facing toward the evaluation unit. The rewiring unit is on a surface of the converter element facing toward the evaluation unit. First contacts of electrically conductive connections between the electrode elements and the pixel electrodes are provided on a surface of the rewiring unit and include a first areal distribution; and second such contacts are provided on a surface of the rewiring unit, including a relatively smaller second areal distribution. An areal extent of the evaluation unit is relatively smaller than an areal extent of the converter element.