X-ray Detector Shock and Static Protection
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Solution Overview
Problem
Existing X-ray detectors are prone to physical shocks and electrostatic interference, leading to durability issues and image noise, especially in mobile environments where accidental drops are common.
Innovation Solution
An X-ray detector design featuring a photoconversion layer, a sensing layer with pixels including photodiodes and transistors, a protective layer for shock resistance, and an anti-static layer to prevent electrostatic charges, along with barrier layers to prevent water ingress, all integrated with a substrate for support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless X-ray detectors are used in mobile environments, then ease of operation is improved, but reliability deteriorates due to frequent accidental drops and physical shocks
Solution Approach 1:
A protective layer is formed on the sensing layer to prevent damage from physical shocks before they occur. This protective layer acts as a cushion that absorbs impact energy from accidental drops, thereby maintaining detector reliability in mobile environments where such shocks are common.
Solution Approach 2:
The detector employs a composite structure combining multiple materials with different properties: the sensing layer for detection, the protective layer for mechanical strength and shock resistance, and the anti-static layer for electrostatic protection. This composite approach allows the device to simultaneously achieve mobility and durability.
2Reliability
If protective measures are added to prevent physical shocks, then reliability is improved, but device complexity increases
Solution Approach 1:
A thin film protective layer is formed on the sensing layer to provide shock protection without adding significant structural complexity. This thin film approach maintains the compactness of the device while delivering the necessary mechanical protection, avoiding the need for bulky protective housings.
Solution Approach 2:
The protective layer serves multiple functions simultaneously: it protects against physical shocks, provides a barrier against environmental contaminants, and works in conjunction with the anti-static layer to protect against electrostatic damage. This multi-functionality reduces the need for separate protective components, thereby limiting the increase in device complexity.
3Reliability
If an anti-static layer is added to prevent electrostatic charges, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The anti-static layer is merged with the protective layer formation process, where both layers are deposited in sequence during the same manufacturing cycle. This integration means that the anti-static protection is added without requiring a separate, complex manufacturing step, thereby minimizing the impact on ease of manufacture.
Solution Approach 2:
The anti-static layer acts as an intermediary between the sensing layer and the external environment, preventing electrostatic charges from reaching and damaging the sensitive sensing elements. This intermediary layer is formed using standard thin film deposition techniques that are compatible with existing manufacturing processes, thus not significantly increasing manufacturing complexity.
4Reliability
If multiple protective layers are added, then reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The protective and anti-static layers are formed as thin films with controlled thicknesses that are optimized to provide adequate protection without requiring extremely tight manufacturing tolerances. The thin film formation process uses established deposition techniques that can achieve the necessary precision within standard manufacturing capabilities, balancing protection effectiveness with manufacturability.
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 X-ray detector achieves high durability and reduced image noise, ensuring reliable operation even under physical shocks and minimizing electrostatic interference, thus enhancing its performance in mobile and diagnostic applications.
Implementation Method 1
a photoconversion layer configured to convert an X-ray into light having a wavelength range that is different from a wavelength range of the X-ray
Implementation Method 2
a sensing layer arranged on the photoconversion layer and comprising a plurality of pixels configured to output the light as an electrical signal
Data Source
AI summary
An X-ray detector, an X-ray photographing apparatus including the X-ray detector, and a method of manufacturing the X-ray detector are provided. The X-ray detector includes a photoconversion layer configured to convert an X-ray into light having a wavelength range that is different from a wavelength range of the X-ray, a sensing layer arranged on the photoconversion layer and including a plurality of pixels configured to output the light as an electrical signal, a protective layer arranged on the sensing layer and protecting the sensing layer from physical shocks, and an anti-static layer arranged on the protective layer and preventing an electrostatic charge from being introduced into the sensing layer.