Curved Radiation Detector Cable Force Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radiation detectors face challenges in minimizing the risk of defects and malfunctions in circuit boards due to excessive stretching forces applied to flexible cables when attached to curved sensor panels, leading to potential image distortion and reduced detector size.
Innovation Solution
A radiation detector design featuring a support table with a curved attachment surface, where flexible cables connect the sensor panel to a circuit board at a set angle, with a reduction structure that balances the stretching force by varying cable lengths and symmetric placement, ensuring equal performance across integrated circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the sensor panel is attached to a curved surface and flexible cables are bent to dispose the circuit board at an angle, then the detector size is reduced and no margin portion is needed, but excessive stretching force is applied to the flexible cables causing defects and malfunctions
Solution Approach 1:
The flexible cable connection is segmented into multiple cables distributed across the curved surface, with each cable connecting to different regions. This segmentation distributes the stretching force across multiple connection points rather than concentrating it in one location, reducing the risk of cable failure while maintaining the compact angled configuration of the circuit board.
Solution Approach 2:
The flexible cables are strategically positioned and sized according to their local requirements on the curved surface. Cables in regions with greater curvature or stretching demand are made longer or positioned to accommodate the local geometric constraints, while cables in flatter regions are shorter. This local adaptation ensures uniform force distribution and prevents excessive stretching at any single point.
2Device complexity
If flexible cables are used to connect the curved sensor panel to the circuit board, then the circuit board can be disposed at an angle without margin portions, but the stretching force varies depending on location causing non-uniform performance
Solution Approach 1:
The parameters of the flexible cables (length, position, routing) are specifically adjusted based on the curvature characteristics of the sensor panel at different locations. By changing these parameters, the stretching force experienced by each cable is equalized, ensuring uniform signal transmission characteristics across all cable connections despite the varying geometry of the curved surface.
Solution Approach 2:
The flexible cables are intentionally designed with asymmetric lengths and positions relative to the circuit board, matching the asymmetric curvature of the sensor panel. This asymmetric configuration compensates for the geometric variations in the curved surface, ensuring that each cable experiences similar stretching forces despite their different locations, thereby achieving uniform signal transmission.
Data Source
AI summary
A radiation detector includes a support table in which an attachment surface having an arc surface shape is formed, a sensor panel which has a rectangular plate shape and in which pixels that include TFTs and detect radiation are two-dimensionally arranged, a circuit board, a flexible cable, and a reduction structure. The sensor panel is attached to the attachment surface while being curved following the arc surface shape. The flexible cables connect a curved side of the sensor panel and a reading circuit board and are arranged along the curved side. The flexible cable is bent to dispose the reading circuit board at an angle of 90° with respect to the sensor panel. The reduction structure reduces a bias of a stretching force applied to the flexible cable caused by the curved side.