Grid-Shaped Start Pulse Signal Line for Electrostatic Discharge Protection
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Solution Overview
Problem
In display panel technologies, the accumulation of electric charges due to direct current (DC) and alternating current (AC) signals in gate driver circuits can lead to electrostatic discharge, posing a risk of damage and injury, necessitating effective electrostatic discharge protection.
Innovation Solution
A capacitor is formed by a first metal layer acting as the start pulse signal line and a second metal layer connected to a peripheral common electrode line, with the start pulse signal line designed in a grid shape to increase conductive channels and disperse electric charges, enhancing electrostatic protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the start pulse signal line is designed in a traditional wire-wound type, then the wiring design is simple, but the electric charges accumulate easily and electrostatic discharge risk increases
Solution Approach 1:
The start pulse signal line is segmented into multiple parallel conductive paths arranged in a grid pattern. This segmentation increases the number of discharge channels and reduces the accumulation of electric charges in any single path, thereby improving electrostatic discharge protection while maintaining manufacturing simplicity
Solution Approach 2:
The signal line design transitions from a one-dimensional wire-wound type to a two-dimensional grid shape. This dimensional change increases the surface area and provides multiple parallel discharge paths, enhancing the ability to dissipate electric charges without significantly complicating the manufacturing process
2Reliability
If the start pulse signal line is designed in a grid shape, then the discharging rate of electric charges increases, but the wiring design complexity increases
Solution Approach 1:
Multiple signal line functions are merged into a single grid-shaped structure that serves both as the start pulse signal line and as the first plate of a capacitor. This merging approach provides electrostatic discharge protection through the grid pattern while avoiding the need for separate protective structures, thus limiting the increase in wiring design complexity
3Reliability
If a capacitor is formed using the start pulse signal line as a plate, then the discharging rate of electric charges is greatly improved, but the structure becomes more complex
Solution Approach 1:
The start pulse signal line is designed to serve multiple functions: it acts as both the signal transmission line and the first plate of a capacitor. The grid-shaped first metal layer forms the capacitor structure without requiring additional dedicated capacitor components, thus improving discharge rate while minimizing structural complexity
Solution Approach 2:
The start pulse signal line itself serves as the capacitor plate, utilizing its own structure to provide electrostatic discharge protection. This self-service approach eliminates the need for separate protective components and reduces overall structural complexity while achieving improved charge dissipation
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 significantly improves the discharging rate of electric charges and reduces the probability of electrostatic discharge, effectively protecting the display panel from damage while maintaining the original functions without altering the wiring design.
Implementation Method 1
a capacitor is formed by having a first metal layer which forms a start pulse signal line to be a first plate and having a second metal layer which is connected to a peripheral common electrode line to be a second plate, thereby greatly improving a discharging rate of electric charges
Implementation Method 2
by designing the start pulse signal line from an original wire-wound type to a grid shape, current conductive channels of the start pulse signal line can be increased, and accumulated electric charges accumulated in the start pulse signal line can be effectively eliminated
Data Source
AI summary
An array substrate and a display panel are provided. The present disclosure can form a capacitor by having a first metal layer which forms a start pulse signal line to be a first plate, and having a second metal layer which is connected to a peripheral common electrode line to be a second plate, thereby achieving electrostatic protection. In addition, by designing the start pulse signal line from an original wire-wound type to a grid shape, accumulated electric charges accumulated in the start pulse signal line can be effectively eliminated, thereby reducing probability of electrostatic discharge in the start pulse signal line.