Scan Line ESD Protection Circuit Layout to Limit Signal Interference
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Solution Overview
Problem
Electronic devices face issues with electrostatic charge accumulation during preparation, leading to potential damage from electrostatic discharge and signal interference.
Innovation Solution
The electronic device incorporates a substrate with a common conductive line and scan lines electrically connected to static discharge conductive lines through electrostatic protection circuits, with specific distances between these conductive lines to manage electrostatic discharge effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrostatic charge is discharged through a common conductive line, then electrostatic discharge damage is prevented, but signal interference occurs affecting electronic quality
Solution Approach 1:
The patent divides the conductive path into separate segments: a first conductive line for electrostatic discharge and a second conductive line for signals. This segmentation prevents the discharge path from interfering with signal transmission while maintaining protection functionality.
Solution Approach 2:
The electrostatic discharge function is extracted from the common conductive line and implemented through a dedicated first conductive line with electrostatic protection circuits. This separates the discharge function from signal carrying functions, eliminating interference.
2Reliability
If electrostatic protection circuits are added to protect components, then component damage from electrostatic discharge is prevented, but device complexity increases
Solution Approach 1:
Electrostatic protection circuits are placed locally at specific positions where electrostatic discharge may occur, rather than throughout the entire device. This localized approach provides protection while minimizing overall complexity.
Solution Approach 2:
The first conductive line acts as an intermediary path that safely channels electrostatic discharge away from sensitive components and circuits. This mediator structure simplifies the overall protection architecture by providing a dedicated discharge route.
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 design reduces component damage from electrostatic discharge and improves the reliability of the electronic device by effectively managing static electricity and minimizing signal interference.
Implementation Method 1
electronic devices inevitably generate electrostatic charge accumulation during the preparation process. If the electrostatic charge cannot be discharged in time, electrostatic discharge will occur
Data Source
AI summary
An electronic device is provided, which comprises: a substrate comprising an active region and a peripheral region; a common conductive line disposed corresponding to the peripheral region of the substrate; and a scan line disposed on the substrate, wherein the scan line is electrically connected to a first static discharge conductive line through a first electrostatic protection circuit in the peripheral region, wherein the common conductive line is electrically separated from the first static discharge conductive line; wherein in a top view of the substrate, there is a first distance between the common conductive line and the first static discharge conductive line, and the first distance is greater than or equal to 1.5 μm and less than or equal to 12 mm.