IGZO TFT Conductive Wire Gap for ESD Charge Discharge
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Solution Overview
Problem
The high incidence of Electro-Static Discharge (ESD) in the manufacturing of IGZO-based Thin Film Transistor (TFT) devices leads to charge accumulation, which can break down insulating layers and cause short-circuiting, as existing methods to mitigate ESD do not provide an effective discharging path and can lead to further static electricity accumulation.
Innovation Solution
A conductive wire structure with a gap between the first and second conductive wires, where an electrical connector connects the wires' ends, with a part of the connector located on a different plane, allowing for effective discharge of accumulated charges through the gap, thereby preventing short-circuiting and improving product yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive wires are continuously connected without gaps, then electrical connectivity is maintained, but charges accumulate causing ESD damage and short-circuiting
Solution Approach 1:
The conductive wire is divided into multiple segments (first conductive wire and second conductive wire) separated by a gap. This segmentation allows the wire to maintain electrical connectivity through the electrical connector while providing a discharge path for accumulated charges, preventing ESD damage to the IGZO TFT device.
Solution Approach 2:
An electrical connector is introduced as an intermediary component between the first and second conductive wires. This connector provides both electrical connectivity and a controlled discharge path, mediating between the need for continuous electrical connection and the need to prevent charge accumulation.
2Object-affected harmful factors
If a gap is introduced between conductive wires to discharge charges, then ESD protection is improved, but electrical connectivity may be compromised
Solution Approach 1:
The electrical connector extends from the first plane (where the gap exists) to a second plane, utilizing a third dimension to bridge the gap. This dimensional transition allows electrical connectivity to be maintained despite the physical gap between conductive wire segments on the same plane.
3Ease of manufacture
If existing ESD mitigation methods are used without effective discharging paths, then manufacturing complexity is reduced, but charge accumulation continues causing short-circuiting
Solution Approach 1:
The electrical connector merges multiple functions into a single component: it provides electrical connectivity between conductive wire segments, establishes a discharge path for accumulated charges, and maintains structural integrity. This integration achieves ESD protection without significantly increasing manufacturing complexity.
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 proposed solution effectively discharges accumulated charges, preventing damage to insulating layers and reducing the risk of short-circuiting, thereby enhancing the reliability and yield of IGZO-based TFT devices.
Implementation Method 1
a connection end of the first conductive wire is spaced apart from a connection end of the second conductive wire by a gap so as to discharge charges accumulated on the first conductive wire and the second conductive wire through the gap
Data Source
AI summary
The present disclosure provides a conductive wire structure, a manufacturing method thereof, an array substrate and a display device. The conductive wire structure includes a first conductive wire and a second conductive wire on a first plane, wherein a connection end of the first conductive wire is spaced apart from a connection end of the second conductive wire by a gap so as to discharge charges accumulated on the first conductive wire and the second conductive wire through the gap; an electrical connector connected to the connection end of the first conductive wire and the connection end of the second conductive wire, respectively, wherein a part of the electrical connector is located on a second plane different from the first plane.