Display Edge Metal Patterns for Static Discharge
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Solution Overview
Problem
Display apparatuses are prone to damage from static electricity, which can flow into the display area during manufacturing or use, causing defects in light-emitting elements and pixel circuits.
Innovation Solution
Incorporating a substrate with metal patterns arranged along the edges, an insulating layer, and a common power supply layer connected to these patterns, which applies a constant voltage to effectively discharge or distribute static electricity, preventing it from entering the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal patterns are arranged along the edge of the substrate to discharge static electricity, then the resistance against static electricity is improved, but the device complexity increases due to additional layers and structures
Solution Approach 1:
The metal patterns are divided into multiple discrete segments arranged along the edge of the substrate, rather than forming a continuous structure. This segmentation allows the static electricity discharge function to be distributed across multiple locations, improving reliability while keeping each individual pattern simple and manageable
Solution Approach 2:
The metal patterns are arranged in a specific spatial configuration along the edge of the substrate, utilizing the two-dimensional plane effectively. By positioning them at the periphery rather than throughout the display area, the solution adds a dimensional aspect to static electricity management without significantly increasing overall structural complexity
2Reliability
If a common power supply layer is added to connect metal patterns, then the ability to distribute electric charges is improved, but the manufacturing precision requirements increase due to additional alignment steps
Solution Approach 1:
The common power supply layer is designed to maintain a uniform electrical potential across all metal patterns. By connecting all edge-located metal patterns to the same power supply potential, the system achieves equipotential conditions that facilitate uniform charge distribution without requiring complex differential alignment, as all connections reference the same potential level
Solution Approach 2:
The common power supply layer serves multiple functions simultaneously: it provides electrical potential to all metal patterns, establishes a reference ground for charge distribution, and creates a unified electrical network across the display apparatus. This multi-functionality reduces the need for separate alignment procedures for each function
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 solution effectively prevents static electricity from damaging the display apparatus by stabilizing and distributing electric charges, thereby reducing the risk of defects in light-emitting elements and pixel circuits.
Implementation Method 1
a common power supply layer disposed on the insulating layer in the peripheral area and electrically connected to the plurality of first metal patterns via a first contact hole defined in the insulating layer
Implementation Method 2
the common power supply layer is electrically connected to the plurality of first metal patterns via a first contact hole defined in the insulating layer
Data Source
AI summary
A display apparatus includes a display area and a peripheral area located outside the display area, and further includes: a substrate, a plurality of first metal patterns arranged on the substrate along an edge of the substrate and arranged apart from each other in the peripheral area, an insulating layer disposed on the plurality of first metal patterns, and a common power supply layer disposed on the insulating layer in the peripheral area and electrically connected to the plurality of first metal patterns via a first contact hole defined in the insulating layer.