Antistatic Conductive Wire for Array Substrate Static Discharge
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Solution Overview
Problem
Array substrates in liquid crystal displays are prone to static electricity, leading to transistor failure and electrical abnormalities, which affects yield and lifespan.
Innovation Solution
Incorporating an antistatic conductive wire with multiple layers in the non-display region of the substrate, including a first and second antistatic conductive layer, which can be doped germanium or metal layers, overlapping and connected via protrusions and via holes to enhance static discharge capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thin film transistors are used in array substrates, then display performance is improved, but static electricity causes transistor failure and electrical abnormalities
Solution Approach 1:
An antistatic conductive wire is introduced as an intermediary element between the thin film transistors and the external environment. This conductive wire provides a dedicated pathway for static electricity to travel along the substrate surface to external discharge points, preventing static charge accumulation that would otherwise damage the transistors.
Solution Approach 2:
The harmful static electricity is extracted from the transistor region and redirected through separate antistatic conductive pathways. By removing static charge from the vicinity of sensitive electronic components and guiding it through dedicated conductive wires to external discharge points, the transistors are protected from electrostatic damage.
2Reliability
If antistatic conductive wire with multiple layers is added to prevent static electricity, then antistatic capability is improved, but device structure becomes more complex
Solution Approach 1:
The antistatic conductive wire structure merges multiple functional layers into a unified system. The first and second antistatic conductive layers are combined with insulating layers to form an integrated antistatic conductive wire that provides both electrical conductivity and electrical isolation, achieving enhanced antistatic capability without proportionally increasing structural complexity.
Solution Approach 2:
The patent transitions from a single-layer antistatic structure to a multi-layer three-dimensional structure. By stacking the first antistatic conductive layer, insulating layer, and second antistatic conductive layer vertically, the design utilizes the vertical dimension to enhance antistatic performance while maintaining a compact footprint on the substrate.
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 antistatic conductive wire effectively accumulates and discharges static electricity, preventing internal failures and improving the yield and lifespan of array substrates and display devices.
Implementation Method 1
an antistatic conductive wire disposed in the non-display region, and the antistatic conductive wire comprises at least two antistatic conductive layers to prevent static electricity
Data Source
AI summary
An array substrate and a display device are provided. An antistatic conductive wire is disposed in the non-display region, and the antistatic conductive wire comprises at least two antistatic conductive layers. An antistatic conductive layer is firstly formed in the fabrication processes, and the antistatic conductive layer has a function of antistatic to prevent static electricity from generating in the processes. After other antistatic conductive layers are formed, a capacitor structure is formed between antistatic conductive layers. Meanwhile, the static discharge is more easily performed in the opposite direction of the antistatic conductive multi-layer.