Detection Substrate Layout With Switchable ESD Discharge Paths
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Solution Overview
Problem
Current X-ray flat panel detectors face issues with Electro-Static Discharge (ESD) during the manufacturing process, leading to device failures and defects, particularly due to the conductive nature of metal traces which facilitate static electricity accumulation and discharge, causing damage to internal device structures.
Innovation Solution
The detection substrate design includes a controllable on-off region with detection wires that can be disconnected through cutting openings or tip discharge portions, allowing for quick discharge of static electricity and preventing it from reaching the internal device structures, thereby reducing the risk of ESD-induced defects. This design ensures that the AT trace is disconnected at the end of the manufacturing process, preventing static electricity from being conducted into the array substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal traces are used for electrical connection, then electrical conductivity is improved, but electrostatic discharge risk increases
Solution Approach 1:
The detection wire is divided into multiple segments by cutting openings in the controllable on-off region, creating isolated conductive sections. This segmentation allows the wire to be disconnected when needed while maintaining connectivity during normal operation, resolving the contradiction between needing continuous electrical connection and preventing electrostatic discharge pathways.
Solution Approach 2:
The controllable on-off region enables the detection wire to dynamically switch between connected and disconnected states. During manufacturing, the wire remains connected for electrical functionality; during handling and operation, it can be disconnected to prevent ESD. This dynamic controllability allows the system to adapt its conductivity based on operational requirements.
2Ease of operation
If detection wires are continuously connected, then electrical functionality is maintained, but static electricity can reach internal device structures
Solution Approach 1:
The controllable on-off region acts as an intermediary mechanism between the detection wire and the internal device structures. It provides a controlled interface that can either allow electrical current to pass through or block it completely, serving as a mediator that protects internal structures from static electricity while maintaining electrical functionality when needed.
Solution Approach 2:
The harmful conductive pathway is extracted or removed from the system by disconnecting the detection wire in the controllable on-off region. This extraction eliminates the pathway that would allow static electricity to reach internal device structures, while the ability to reconnect maintains electrical functionality when required.
3Reliability
If cutting openings are made in detection wires, then ESD protection is improved, but manufacturing complexity increases
Solution Approach 1:
The cutting openings are created during the manufacturing process as a preliminary action, establishing the controllable on-off capability before the device is put into service. This advance preparation allows the ESD protection mechanism to be built-in rather than added later, and the openings can be strategically placed to minimize impact on overall manufacturing complexity while maximizing ESD protection effectiveness.
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 effectively reduces the occurrence of ESD-related defects by ensuring that static electricity is quickly dissipated during the manufacturing process and prevents it from causing damage to the device, thereby protecting the X-ray flat panel detectors from static electricity introduced during handling after manufacturing.
Implementation Method 1
tip discharge portions are able to be fused by a tip discharge to make the detection wires in the disconnected state
Data Source
AI summary
A detection substrate and manufacturing method thereof, a flat panel detector and manufacturing method thereof. The detection substrate includes: a substrate including a detection region, a binding region, a controllable on-off region, and a cutting region; a plurality of detection units including transistors and photosensitive devices located in the detection region, a transistor includes a gate, a first electrode and a second electrode; a photosensitive device is connected to the first or second electrode; a plurality of conductive wires, one end is connected to the gate, and the other end is extended to the binding region; a conductive ring disposed in the cutting region; a plurality of detection wires, one end is connected to the conductive ring, the other end is connected to the conductive wires, the detection wires are passed through the controllable on-off region; the detection wires located in the controllable on-off region can have a disconnected state.