Shielded Detector Wiring Layout for Low-Noise Pixel Arrays
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Solution Overview
Problem
Existing detectors face challenges in achieving stable detection due to noise fluctuations caused by capacitive or inductive coupling, especially as the number of detection elements increases, leading to unstable preamplifier operation and potential oscillation.
Innovation Solution
Incorporating a conductive layer that functions as a shield between the electrode and counter electrode layers, set to a specific potential, to suppress potential fluctuations and reduce noise, thereby stabilizing detection even with increased detection elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of detection elements is increased, then the detection coverage is improved, but the noise interference from capacitive and inductive coupling increases
Solution Approach 1:
A conductive layer is introduced as an intermediary component between the electrode and counter electrode layers. This conductive layer acts as a shield to block capacitive and inductive coupling between adjacent detection elements, thereby reducing noise interference while allowing the detector array to maintain high detection coverage.
2Area of stationary object
If the number of detection elements is increased, then the detection coverage is improved, but the preamplifier operation stability deteriorates
Solution Approach 1:
The conductive layer serves as a shielding intermediary that prevents electromagnetic interference from propagating to the preamplifier circuits. By blocking capacitive and inductive coupling paths, the conductive layer maintains preamplifier operation stability even when the number of detection elements is increased.
3Area of stationary object
If the number of detection elements is increased, then the detection coverage is improved, but the device complexity increases
Solution Approach 1:
The conductive layer is integrated into the existing detector structure, merging the shielding function with the electrode and counter electrode layers. This integration approach allows the detector array to achieve high detection coverage without proportionally increasing device complexity, as the conductive layer can be fabricated using similar processes as the existing layers.
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 conductive layer effectively shields against noise fluctuations, allowing for stable detection and preventing preamplifier instability and oscillation, even with increased pixel counts and wiring capacitance.
Implementation Method 1
Incorporating a conductive layer between the electrode and counter electrode layers, which acts as a shield to suppress potential fluctuations and reduce noise
Data Source
AI summary
According to one embodiment, a detector includes an element portion. The element portion includes a first detection portion and a wiring portion. The first detection portion includes a first electrode, a first counter electrode, and a first organic semiconductor layer. At least a part of the first organic semiconductor layer is between the first electrode and the first counter electrode. The wiring part includes a first electrode layer electrically connected with the first electrode, a first counter electrode layer electrically connected with the first counter electrode, and a first conductive layer. The first counter electrode layer is between the first electrode layer and the first detection portion in a first direction from the first electrode layer to the first counter electrode layer. The first conductive layer is between the first electrode layer and the first counter electrode layer in the first direction.