Organic Light-Emitting Display Device with Fluoropolymer Barrier Patterns
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Solution Overview
Problem
In large-screen organic light-emitting display devices, reducing the bezel width to minimize image seams leads to increased vulnerability to moisture and oxygen invasion, which deteriorates the organic light-emitting elements and reduces the device's reliability.
Innovation Solution
The introduction of barrier patterns on the bezel area, made from fluoropolymer materials with continuous carbon-carbon bonds and a substantial amount of fluorine, to block moisture invasion by making the organic light-emitting element layer discontinuous and preventing its exposure to the substrate's side face.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bezel width is reduced to minimize image seams, then user immersion is improved, but moisture and oxygen invasion becomes easier causing organic light-emitting element deterioration
Solution Approach 1:
The organic light-emitting element layer is divided into discontinuous portions by the barrier patterns, creating segmented regions that block moisture and oxygen invasion paths while maintaining visual continuity of the display
Solution Approach 2:
Barrier patterns made of fluoropolymer materials are introduced as intermediary structures between the organic light-emitting element layer and the environment, providing chemical resistance and blocking moisture/oxygen pathways without affecting display performance
2Shape
If the bezel width is reduced, then image seam visibility is decreased, but the invasion path of moisture and oxygen to the organic light-emitting element is exposed
Solution Approach 1:
The barrier patterns are strategically positioned in specific regions where moisture and oxygen invasion is most likely to occur, providing localized protection without requiring a complete increase in bezel width
Solution Approach 2:
Fluoropolymer materials with continuous carbon-carbon bonds and substantial fluorine content are used to create barrier patterns that combine chemical resistance, moisture blocking, and structural integrity in a single material system
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 effectively secures the lifespan of the organic light-emitting elements by preventing moisture and oxygen degradation, maintaining the device's performance and reliability while allowing for a reduced bezel width to minimize image seams, thus enhancing user immersion.
Implementation Method 1
made from fluoropolymer materials with continuous carbon-carbon bonds and a substantial amount of fluorine, to block moisture invasion
Data Source
AI summary
An organic light-emitting display device includes a substrate including a display area in which a plurality of pixels are disposed, and a non-display area surrounding the display area; a dam pattern surrounding the display area and positioned in the non-display area; a first barrier pattern positioned in a first barrier area between the dam pattern and the display area; a second barrier pattern positioned in a second barrier area outside the dam pattern; an organic light-emitting element layer positioned in a pixel area, the first barrier area, and the second barrier area, wherein the organic light-emitting element layer is divided into discontinuous portions spaced from each other via each of the first barrier pattern and the second barrier pattern; and an encapsulation portion covering the display area, the organic light-emitting element layer, the first barrier pattern and the second barrier pattern.