Scintillator Layer Edge Thickening for Flat Panel Detector Flatness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional X-ray flat panel detectors face issues with image quality due to deformation of the scintillator layer during the attaching process of the support layer, resulting in unevenness and defects in the bright image, primarily caused by height gaps between the central and edge areas of the scintillator layer.
Innovation Solution
A detection substrate with a flexible substrate, a scintillator layer having a central and peripheral portion of integrated structure, and a reinforcement structure that compensates for the height gap between the central and edge areas, ensuring uniform force distribution during the attaching process, preventing deformation of the scintillator layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the scintillator layer has a peripheral portion with uniform thickness to simplify manufacturing, then the manufacturing precision is improved, but the height gap between central and peripheral portions cannot be compensated, leading to deformation
Solution Approach 1:
The scintillator layer is designed with different thickness characteristics in different regions: the central portion maintains uniform thickness for consistent imaging quality, while the peripheral portion has progressively increasing thickness to compensate for height gaps and provide self-reinforcement, eliminating the need for additional reinforcement structures in some areas.
Solution Approach 2:
The peripheral portion of the scintillator layer is pre-formed with progressively increasing thickness during the manufacturing process. This preliminary structural design compensates for potential deformation and height gaps before the support layer is attached, preventing instability issues rather than correcting them later.
2Stability of the object's composition
If a reinforcement structure is added to cover the peripheral portion and compensate for height gaps, then the stability of the scintillator layer is improved, but the device complexity increases
Solution Approach 1:
The reinforcement function is merged with the scintillator layer itself by making the peripheral portion progressively thicker. This integrated design combines the scintillator's light-producing function with the structural reinforcement function, eliminating the need for separate reinforcement structures and reducing overall device complexity.
Solution Approach 2:
The peripheral portion of the scintillator layer serves multiple functions: it maintains the scintillator's primary function of converting X-rays to visible light while simultaneously providing structural reinforcement and compensating for height gaps. This multi-functionality reduces the need for additional components.
3Stability of the object's composition
If the peripheral portion thickness is progressively increased to compensate for height gaps, then the stability is improved, but the manufacturing precision becomes more difficult to control
Solution Approach 1:
The thickness parameter of the peripheral portion is changed progressively rather than uniformly, creating a gradient structure that compensates for height gaps. This parameter variation is designed to follow a controlled pattern that simplifies the manufacturing process while achieving the desired 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
The solution prevents warping of the flexible substrate and support layer, maintains the scintillator layer's integrity, and enhances the overall performance of the detection substrate by eliminating defects in the bright image.
Implementation Method 1
a scintillator layer or a phosphor layer of an indirect conversion type X-ray flat panel detector converts X-ray photons into visible light
Implementation Method 2
the visible light is converted into an electrical signal by the photodiode
Data Source
AI summary
Provided are a detection substrate, a manufacturing method therefor and a flat panel detector. The detection substrate includes: a flexible substrate; a scintillator layer on a side of the flexible substrate, where the scintillator layer includes a central portion and a peripheral portion on at least one side of the central portion, the central portion and the peripheral portion are of an integrated structure, a thickness of the central portion at each position is approximately equal, and in a direction from an edge of the flexible substrate to a center of the flexible substrate, a thickness of the peripheral portion progressively increases; and a reinforcement structure, the reinforcement structure and the scintillator layer being on the same side of the flexible substrate, and the reinforcement structure at least covering part of the peripheral portion.