Bi-directional Electrostatic Discharge Unit for Display Panel Miniaturization
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Solution Overview
Problem
Current electrostatic discharge units can only achieve unidirectional discharge, requiring two units for bi-directional discharge, which increases product size and hinders miniaturization.
Innovation Solution
An electrostatic discharge unit with a first gate electrode and a second gate electrode, both insulated from an active layer, and first and second electrodes connected to the active layer, allowing bi-directional discharge by electrical connections between the gate electrodes and electrodes, reducing space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two electrostatic discharge units are arranged to achieve bi-directional discharge, then the discharge capability is improved, but the product size increases
Solution Approach 1:
The patent merges two separate electrostatic discharge units into a single integrated unit by sharing the active layer and using two gate electrodes (first gate electrode and second gate electrode) that are insulated from each other. This allows bi-directional discharge capability to be achieved while reducing the overall space occupancy compared to using two separate units.
Solution Approach 2:
The single electrostatic discharge unit is designed to perform multiple functions by incorporating two gate electrodes that can independently control discharge in different directions. The shared active layer serves both discharge paths, making the unit universal for bi-directional protection.
2Area of stationary object
If a single electrostatic discharge unit is used, then the space occupancy is reduced, but the bi-directional discharge capability is lost
Solution Approach 1:
The gate electrode is segmented into two insulated parts: the first gate electrode and the second gate electrode. This segmentation allows independent control of discharge in different directions while maintaining a single integrated unit structure, thus achieving bi-directional capability without increasing space occupancy.
Solution Approach 2:
The patent introduces a dimensional solution by stacking the first gate electrode and second gate electrode in different layers (first gate electrode layer and second gate electrode layer) with insulation between them. This vertical arrangement enables bi-directional control within a compact footprint.
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
Enables bi-directional electrostatic discharge while minimizing space occupancy, enhancing product miniaturization and reliability by allowing simultaneous protection of signal lines.
Implementation Method 1
an electrostatic discharge unit is arranged on an array substrate of the display device to release the high level generated by an accumulation of static electricity
Data Source
AI summary
An electrostatic discharge unit, an array substrate and a display panel are provided. The electrostatic discharge unit includes: an active layer; a first gate electrode and a second gate electrode which are spaced apart from each other and are insulated from the active layer; and a first electrode and a second electrode which are spaced apart from each other and are respectively connected to the active layer. The first gate electrode is electrically connected to the first electrode, and the second gate electrode is electrically connected to the second electrode.