Radiation Image Detector Power Distribution Network
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Solution Overview
Problem
Existing radiation image detectors face instability in power supply due to the distribution of power to multiple control circuits, which can lead to unreliable operation, especially in larger detectors with longer sides.
Innovation Solution
The implementation of a radiation image detector design that includes a plurality of control circuits, a power supply circuit, first wiring lines for direct power supply, and at least one second wiring line connecting control circuits to each other, ensuring stable power distribution and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple control circuits are provided to control different regions of the detection panel, then the control capability and coverage are improved, but the power supply stability deteriorates due to voltage drops in long wiring lines
Solution Approach 1:
The detection panel is divided into multiple regions, each controlled by a separate control circuit. This segmentation allows each control circuit to be positioned closer to its controlled region, reducing wiring line lengths and minimizing voltage drops, thereby maintaining power supply stability while improving overall control capability
Solution Approach 2:
The patent introduces a two-dimensional power distribution network with first wiring lines extending in a first direction and second wiring lines extending in a second direction perpendicular to the first. This multi-dimensional wiring architecture reduces the effective path length for power delivery to each control circuit, mitigating voltage drops and improving power supply stability across the large detection panel
2Area of stationary object
If the detection panel size is increased to improve imaging coverage, then the area of detection is improved, but the power supply stability deteriorates due to longer wiring lines
Solution Approach 1:
The large detection panel is divided into multiple smaller controlled regions, each with its own control circuit. This segmentation ensures that no single control circuit requires excessively long wiring lines to reach distant pixels, maintaining power supply stability while preserving the large overall detection area
Solution Approach 2:
The patent employs a grid-like wiring architecture with first wiring lines in one direction and second wiring lines in a perpendicular direction. This two-dimensional power distribution network reduces the maximum distance any control circuit must be connected to the power supply, thereby maintaining stable power delivery across the entire large-area detection panel
3Device complexity
If multiple control circuits share power from a single power supply, then the device complexity is reduced, but the power supply stability deteriorates due to voltage drops
Solution Approach 1:
The patent creates a two-dimensional power distribution network using first wiring lines in a first direction and second wiring lines in a second direction. This multi-dimensional wiring approach provides multiple parallel paths for power delivery to each control circuit, reducing the effective resistance and voltage drops while maintaining a single power supply unit, thus balancing simplicity and stability
Data Source
AI summary
An electronic cassette has a detection panel (light detection substrate) in which pixels for accumulating electric charges corresponding to radiation are arranged. The electronic cassette includes two gate control circuits that control an operation of a gate drive circuit, a power supply circuit that supplies power to the gate control circuits, a first wiring line, and a second wiring line. The first wiring line connects the power supply circuit and each of two gate control circuits to each other, and supplies each of two gate control circuits with the power supplied from the power supply circuit. The second wiring line connects two gate control circuits to each other. The power supplied from the power supply circuit to one of two gate control circuits is diverted to the other, through the second wiring line.