Reflective Grating Light Management in X-ray Detection Panels
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Solution Overview
Problem
Current X-ray digital radiography detection technologies face limitations in image quality and resolution, particularly in the integration of reflective and transmissive grating structures for efficient light management and signal acquisition in detection panels.
Innovation Solution
The detection panel incorporates a photosensitive element, a drive circuit with a switch element, and reflective and transmission gratings on a base substrate, where the reflective grating is designed as a sub-wavelength grating to reflect light towards the switch element, and the transmission grating is used to enhance light transmittance, along with a bias voltage line for improved signal acquisition and image processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reflective grating is added to reflect light toward the switch element, then light management efficiency is improved, but device complexity increases
Solution Approach 1:
The reflective grating is integrated into the same layer as the transmission grating and bias voltage line, combining multiple functional elements into a unified structure that reduces overall device complexity while maintaining enhanced light management capabilities
Solution Approach 2:
The reflective grating serves multiple functions: it reflects light toward the switch element, works in conjunction with the transmission grating for comprehensive light management, and is formed in the same layer as other functional elements, demonstrating multi-functionality that addresses both detection sensitivity and structural efficiency
2Manufacturing precision
If both reflective and transmission gratings are used for light management, then image quality and resolution are improved, but manufacturing complexity increases
Solution Approach 1:
The reflective grating and transmission grating are merged into the same layer and formed through the same patterning process, which simplifies the manufacturing process by reducing the number of separate fabrication steps while achieving high image quality through the combined optical functions of both gratings
3Use of energy by moving object
If the reflective grating is positioned to cover the switch element, then light reflection efficiency is improved, but the switch element may be affected by incident light
Solution Approach 1:
The reflective grating acts as an intermediary optical element that redirects incident light toward the switch element through controlled reflection, enabling efficient light management while protecting the switch element from direct light exposure that could affect its 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
This configuration enhances the detection panel's sensitivity and accuracy by effectively managing light, improving image quality and resolution, while reducing radiation dose and maintaining stable performance of the switching transistor.
Implementation Method 1
a reflective grating, which is on a side of the drive circuit where the first light beam is incident, and is configured to reflect at least a portion of the first light beam incident toward the switch element
Implementation Method 2
a photosensitive element, configured to sense a first light beam incident to the photosensitive element to generate a photosensitive signal
Data Source
AI summary
A detection panel and a manufacturing method of the same are provided. The detection panel includes: a photosensitive element configured to sense a first light beam incident to the photosensitive element to generate a photosensitive signal; a drive circuit configured to be coupled to the photosensitive element to acquire the photosensitive signal from the photosensitive element, the drive circuit including a switch element; and a reflective grating which is on a side of the drive circuit where the first light beam is incident, and is configured to reflect at least a portion of the first light beam incident toward the switch element.