Radiation Detector Intermediate Layer for Cost Reduction
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Solution Overview
Problem
The high cost of manufacturing radiation detectors, particularly due to the expensive ASIC surface area in CT systems, and the challenge of managing input capacitance to maintain linearity and noise behavior, which complicates the development of cost-effective detectors with improved energy resolution.
Innovation Solution
Incorporating an intermediate layer with electrically-conductive connections between detection elements and readout units, allowing for a reduced surface area of readout units and the integration of a heating apparatus to regulate temperature and power losses, thereby reducing manufacturing costs and enhancing detector stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ASIC surface area is reduced to lower manufacturing costs, then manufacturing cost decreases, but the input capacitance control and signal transmission quality may deteriorate
Solution Approach 1:
An intermediate layer is introduced between the detection elements and the readout units (ASIC). This intermediate layer serves as a mediator that carries out the electrical connections, allowing the ASIC to be positioned away from the detection elements. The intermediate layer includes conductive traces and possibly reconfiguration capabilities that maintain signal integrity while enabling cost-effective ASIC sizing.
Solution Approach 2:
The connection path is extended from a direct planar connection to a three-dimensional path through the intermediate layer. This allows the ASIC to be positioned on a different plane or layer than the detection elements, enabling independent optimization of each component's size and position without compromising connection quality.
2Ease of manufacture
If the ASIC surface area is minimized to reduce costs, then manufacturing cost decreases, but device complexity increases due to intermediate connections
Solution Approach 1:
The intermediate layer is integrated with the substrate structure, merging the connection function into the existing detector architecture. This consolidation reduces the need for separate complex interconnection structures and simplifies the overall manufacturing process.
Solution Approach 2:
The intermediate layer is designed to provide multiple functions: electrical connection, mechanical support, and potential signal routing flexibility. This multi-functionality reduces the need for additional specialized components, thereby reducing overall device complexity.
3Reliability
If readout units are positioned directly on detection elements to minimize line lengths, then signal transmission quality improves, but manufacturing cost increases due to larger ASIC surface area
Solution Approach 1:
The intermediate layer acts as a mediator that enables long-distance signal transmission with quality comparable to short direct connections. It provides controlled impedance paths and shielding that compensate for the increased line length, allowing cost-effective ASIC positioning away from detection elements.
Solution Approach 2:
The connection path is segmented into multiple sections through the intermediate layer, with each section optimized for specific signal transmission requirements. This segmentation allows for better signal integrity management over longer distances while enabling flexible ASIC placement.
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 significantly reduces manufacturing costs by minimizing the surface area of readout units and effectively manages temperature and power losses, improving the stability and energy resolution of radiation detectors, especially in high-radiation environments like CT devices.
Implementation Method 1
a heating apparatus to heat a radiation detector
Data Source
AI summary
A radiation detector includes an intermediate layer, which is arranged between a detection layer with a number of detection elements and a number of readout units. In an example embodiment of this arrangement, the intermediate layer has a plurality of electrically-conductive connections between the detection elements and the readout units. An example embodiment further specifies a medical imaging system, as well as a method of using the heating apparatus.