Side Wiring Protection Structure for Zero-Bezel Tiling Displays
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Solution Overview
Problem
Organic light-emitting display devices are vulnerable to moisture and oxygen, leading to defective pixels and requiring protective structures, while micro-LED display devices are resistant but face issues with migration of metal ions between side wirings, causing short-circuits and image defects.
Innovation Solution
A display device with a side wiring structure featuring a wiring protection member composed of a protective layer and conductive particles that suppresses migration between side wirings, delaying the occurrence of metal ion migration and preventing short-circuits, and a side sealing member that minimizes bezel area through laser cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective structure such as a sealing material is added to protect against moisture and oxygen, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent removes the need for separate protective structures by using inorganic light-emitting materials that are inherently resistant to moisture and oxygen. This extraction of the protective function from a separate component to the material itself resolves the contradiction between reliability and device complexity.
Solution Approach 2:
The patent changes the material parameter from organic to inorganic light-emitting materials, which fundamentally alters the resistance properties to moisture and oxygen. This parameter change eliminates the need for additional protective structures while maintaining high reliability.
2Device complexity
If side wiring structure is simplified to reduce device complexity, then manufacturing is easier, but metal ion migration occurs causing short-circuits
Solution Approach 1:
The patent introduces an intermediary barrier layer between adjacent side wirings that prevents metal ion migration while allowing the side wiring structure to remain simplified. This mediator layer resolves the contradiction by providing protection without adding structural complexity.
Solution Approach 2:
The patent uses composite material structures in the side wiring configuration, combining conductive materials with barrier materials to create a multi-functional layer that prevents ion migration while maintaining electrical functionality and structural simplicity.
3Area of stationary object
If bezel area is reduced to improve user immersion, then visual quality is improved, but structural support is compromised
Solution Approach 1:
The patent employs thin film structures and flexible sealing members that can provide adequate structural support with minimal thickness, enabling the bezel area to be reduced to nearly zero while maintaining the necessary mechanical strength and sealing functionality.
Solution Approach 2:
The patent changes the structural parameters by using advanced materials with high strength-to-thickness ratios, allowing the bezel structure to be minimized while maintaining sufficient mechanical support and structural integrity.
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
This solution enhances the reliability and lifespan of the display device by preventing short-circuits and image defects, while reducing power consumption and achieving a zero bezel area for improved user immersion.
Implementation Method 1
a wiring protection member covering the side wiring, wherein the wiring protection member includes a protective layer and a plurality of conductive particles dispersed in the protective layer
Implementation Method 2
a side sealing member covering the side surface portion, wherein the side sealing member has a minimum space or zero area in a bezel area disposed on a side surface of the display device
Data Source
AI summary
A display device includes a first substrate including light-emitting elements disposed on one surface thereof; a second substrate bonded to an opposite surface to the one surface of the first substrate; a plurality of side wirings electrically connecting the first substrate and the second substrate to each other; a wiring protection member covering the side wirings; wherein the wiring protection member includes a protective layer and a plurality of conductive particles dispersed in the protective layer.