ESD Assembly with Semiconductor Layer for Display Panel Protection
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Solution Overview
Problem
Electro-static discharge (ESD) breakdown at the overlapping positions of gate and data lines in thin film transistor liquid crystal displays and active organic light-emitting diode displays leads to short circuits, causing poor display performance due to charge release.
Innovation Solution
An electro-static discharge assembly comprising a base substrate with a semiconductor layer, insulating layers, auxiliary electrodes, and electrodes spaced apart, where the electrodes are in contact with the semiconductor layer and the auxiliary electrodes facilitate conductive channels for ESD neutralization, with serrated edges for enhanced high-voltage discharge capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gate lines and data lines are overlapped to increase pixel density, then display resolution is improved, but electro-static discharge breakdown occurs causing short circuits
Solution Approach 1:
The patent introduces a semiconductor layer as an intermediary component between the gate line and data line. This semiconductor layer acts as a mediator that enables controlled charge transfer and electro-static discharge, preventing direct short circuits while maintaining the overlapping line structure needed for high resolution displays.
Solution Approach 2:
The patent converts the harmful electro-static discharge phenomenon into a beneficial protective mechanism. By providing a dedicated discharge path through the semiconductor layer, the harmful static electricity that would otherwise cause breakdown is redirected to safely neutralize charges, transforming a reliability threat into a protective feature.
2Reliability
If auxiliary electrodes and insulating layers are added to prevent ESD breakdown, then line stability is improved, but device complexity increases
Solution Approach 1:
The semiconductor layer serves multiple functions simultaneously: it acts as a charge transfer medium, provides electro-static discharge pathways, and functions as part of the transistor structure. This multi-functionality allows the patent to improve reliability without proportionally increasing device complexity, as one component accomplishes multiple protective and operational roles.
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 assembly effectively resists ESD by forming conductive channels that allow for both passive and active discharge of static electricity at various voltages, improving the ability to neutralize electro-static currents and prevent short circuits in display panels.
Implementation Method 1
release of a charge on the data line and the gate line often causes electro-static discharge (ESD) breakdown
Implementation Method 2
forming conductive channels that allow for both passive and active discharge of static electricity
Data Source
AI summary
An electro-static discharge assembly, an array substrate and a fabrication method thereof, and a display panel are provided. The electro-static discharge assembly includes: a base substrate; a semiconductor layer, a first insulating layer, a first auxiliary electrode, a first electrode and a second electrode provided on the base substrate, wherein the first electrode and the second electrode are spaced apart from each other and are respectively in contact with the semiconductor layer, the first auxiliary electrode is in contact with one of the first electrode and the second electrode, and the first insulating layer is provided between the first auxiliary electrode and both the first electrode and the second electrode.