Display Panel ESD Structures for Thin Bezel Anti-Static Protection
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Solution Overview
Problem
Display panels, particularly those without metal frames, face challenges in electrostatic protection due to the use of lighter and thinner materials like polyvinyl chloride, which increases the risk of static electricity damage and requires enhanced anti-static capabilities.
Innovation Solution
A display panel design incorporating an array substrate and an opposite substrate with a sealant containing conductive material wrapped in insulating material, featuring electrostatic discharge (ESD) structures with increased resistance, tip/corner designs, and S/Z-shaped configurations in peripheral wiring to facilitate easy discharge of static electricity, allowing the conductive material to melt and repair damaged areas upon temperature threshold activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If lighter and thinner materials like polyvinyl chloride are used to reduce weight and meet narrow bezel design requirements, then the display panel achieves thinner profiles and narrower bezels, but the anti-static capability deteriorates and the risk of static electricity damage increases
Solution Approach 1:
The patent divides the anti-static protection function into multiple segments: ESD structures segmented along peripheral wirings, multiple barrier layers segmented at different positions, and filling material segmented in non-display areas. This segmentation allows comprehensive electrostatic protection throughout the display panel while maintaining thin profiles.
Solution Approach 2:
The patent employs composite materials including conductive material wrapped by insulating material in the filling material, and multiple barrier layers with different material properties. These composite structures provide both electrostatic discharge pathways and insulation, achieving reliable anti-static capability in thinner display panels.
2Reliability
If ESD structures with higher resistance are designed to facilitate easy discharge of static electricity, then the electrostatic protection improves, but the manufacturing complexity increases due to precise structural requirements
Solution Approach 1:
The patent applies local quality by creating ESD structures with specific tip and corner configurations only at critical locations along peripheral wirings, rather than uniformly across the entire structure. This localized approach achieves effective electrostatic discharge while simplifying manufacturing compared to comprehensive high-resistance structures.
Solution Approach 2:
The ESD structures with tip and corner designs automatically discharge static electricity through their geometric characteristics without requiring external control or adjustment mechanisms. The structures self-regulate electrostatic discharge based on their inherent resistance properties, reducing manufacturing complexity.
3Reliability
If multiple barrier layers and filling material are added to enhance anti-static capability, then the electrostatic protection improves, but the device complexity increases
Solution Approach 1:
The filling material serves multiple functions simultaneously: it provides electrostatic discharge pathways through conductive material, offers insulation through insulating material, and fills non-display areas for structural completeness. The barrier layers also serve dual purposes of electrostatic protection and structural separation, reducing overall device complexity despite enhanced protection capabilities.
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 provides long-term high anti-static capability by effectively discharging static electricity and repairing damaged ESD structures, ensuring continuous functionality and meeting the demands of thinner, narrower bezel designs in the competitive cell phone market.
Implementation Method 1
The insulating material is insulated at normal temperature and melted when the temperature exceeds a preset temperature threshold
Implementation Method 2
The conductive material is melted when the temperature exceeds the preset temperature threshold
Implementation Method 3
The preset temperature threshold is a temperature value produced when the ESD structure is struck by static electricity
Data Source
AI summary
A display panel and a display device are provided. The display panel includes an array substrate and an opposite substrate arranged oppositely; a sealant disposed in non-display areas; and a peripheral wiring disposed in the non-display areas of the array substrate and/or the opposite substrate and including at least one electrostatic discharge (ESD) structure.