Dam Structure with Alternating Barrier Patterns for Reduced Bezel
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Solution Overview
Problem
Traditional electroluminescent display devices face limitations in reducing bezel size due to the need for a wider dam structure to prevent moisture and oxygen permeation, which compromises the device's lifespan and reliability.
Innovation Solution
The implementation of a dam structure with alternating lower and upper barrier patterns on the substrates, formed of materials like silicon dioxide and silicon nitride, to effectively prevent moisture and oxygen permeation while minimizing the bezel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the width of the dam structure is increased to prevent moisture and oxygen permeation, then the lifespan and reliability of the electroluminescent display device are improved, but the bezel size increases
Solution Approach 1:
The dam structure is segmented into multiple alternating barrier patterns (first and second barrier patterns) with different materials and properties. This segmentation allows each pattern to contribute differently to moisture prevention, achieving effective protection with a narrower overall structure width, thus reducing bezel size while maintaining reliability.
Solution Approach 2:
The dam structure uses composite materials by alternating different barrier patterns with distinct material compositions. The first barrier pattern and second barrier pattern are formed with different materials that complement each other, creating a multi-layered protective barrier that enhances moisture prevention efficiency while minimizing the required width of the dam structure.
2Object-affected harmful factors
If the width of the dam structure is increased to prevent moisture and oxygen permeation, then the moisture prevention function is improved, but the device complexity increases
Solution Approach 1:
The dam structure is divided into alternating first and second barrier patterns with different material compositions. This segmentation creates a multi-functional barrier system where each pattern addresses specific aspects of moisture prevention, achieving superior protection against harmful factors while maintaining a relatively simple overall structure that does not significantly increase device 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
This configuration enhances the moisture-preventing efficiency of the electroluminescent display device, improving its reliability and extending its lifespan while allowing for a reduced bezel size, enabling a more compact design.
Implementation Method 1
a dam structure configured to bond the first and second substrates to each other in the edges of the first and second substrates, wherein the dam structure includes a barrier pattern
Data Source
AI summary
Disclosed is an electroluminescent display device provided with a dam structure capable of improving a lateral-surface moisture permeation preventing function, and configured to reduce a bezel, wherein the electroluminescent display device comprises a first substrate, a second substrate confronting the first substrate, a dam structure configured to bond the first and second substrates to each other in the edges of the first and second substrates, wherein the dam structure includes a barrier pattern.