Digital X-ray Detector Assembly Compressible Member Design
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Solution Overview
Problem
Digital x-ray detectors face structural limitations that lead to image artifacts due to air gaps between the scintillator screen and light imager panel, and static electricity generation, which degrades image quality and complicates manufacturing.
Innovation Solution
A digital x-ray detector design featuring a compressible member between the front cover and scintillator screen to maintain pressure and contact, with an optional conductive member to dissipate static electricity, and a robust enclosure with fasteners for easy assembly and high-quality imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is used to affix the scintillator screen member to the light imager panel member, then air gaps are eliminated, but spatial resolution degrades and manufacturing becomes difficult
Solution Approach 1:
The patent removes the adhesive layer from the system entirely, replacing it with a mechanical compression solution using a compressible member and fasteners. This extraction of the harmful adhesive element eliminates the source of spatial resolution degradation while maintaining contact uniformity through direct mechanical pressure between the scintillator screen member and light imager panel member.
Solution Approach 2:
The patent introduces a compressible member as an intermediary element between the scintillator screen member and the light imager panel member. This compressible member acts as a mediator that transmits compression force uniformly across the interface, ensuring consistent contact without requiring adhesive bonding, thereby maintaining spatial resolution while eliminating air gaps.
2Reliability
If adhesive is used to affix the scintillator screen member to the light imager panel member, then air gaps are eliminated, but manufacturing process becomes difficult
Solution Approach 1:
The patent segments the detector assembly into distinct modular components: the scintillator screen member, the light imager panel member, the compressible member, and the fastening system. This segmentation allows each component to be manufactured and assembled separately using standard fastening techniques, greatly simplifying the manufacturing process compared to adhesive bonding which requires precise alignment and curing procedures.
Solution Approach 2:
The compressible member serves as a manufacturable intermediary that facilitates assembly through mechanical compression. This intermediary element allows for easy adjustment and assembly using conventional fasteners, making the manufacturing process more accessible and less complex than adhesive-based methods which require specialized application equipment and environmental controls.
3Manufacturing precision
If close contact is maintained between scintillator screen member and light imager panel member, then spatial resolution is maintained, but static electricity is generated
Solution Approach 1:
The conductive member is introduced as an intermediary element between the scintillator screen member and the compressible member. This conductive intermediary provides a pathway for static electricity dissipation while maintaining the close contact necessary for spatial resolution. The conductive member acts as a bridge that preserves the mechanical connection while managing electrical charge accumulation.
Solution Approach 2:
The patent extracts the static electricity problem from the system by providing a dedicated conduction pathway through the conductive member. This separation allows the close contact interface to maintain spatial resolution while the conductive member independently handles the static electricity dissipation function, preventing artifacts without compromising image quality.
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 ensures no air gaps for improved spatial resolution, reduces image artifacts, and simplifies manufacturing while effectively managing static electricity, resulting in high-quality digital radiography images.
Implementation Method 1
a compressible member positioned between the front cover and the scintillator screen member to apply pressure to the scintillator screen member and the adjoining surface between the scintillator screen member and the light imager panel member
Implementation Method 2
a conductive member positioned between the compressible member and the scintillator screen member
Data Source
AI summary
A digital radiography imaging system having a digital x-ray detector that is easy to manufacture and produces high quality images with no artifacts. The digital x-ray detector including a front cover, a scintillator screen member, a light imager panel member having a surface in direct contact with an adjoining surface of the scintillator screen member, a compressible member positioned between the front cover and the scintillator screen member to apply pressure to the scintillator screen member and the adjoining surface between the scintillator screen member and the light imager panel member, electronic circuitry mounted on at least one printed circuit board and coupled to the light imager panel, a back cover, and a plurality of fasteners for fastening the front cover to the back cover.