OLED Display Panel Double-Layer Sealing with Chamfered Corners
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Solution Overview
Problem
Conventional OLED display panels are vulnerable to moisture intrusion due to their sensitivity and the limitations of traditional sealing methods, which can lead to reduced durability and performance.
Innovation Solution
A display panel design featuring a double-layer sealing adhesive system with chamfered corners and a moisture-absorbing material strip, where the first and second sealing adhesive strips form a hermetic seal with a third adhesive filling the sealed region, and a moisture-absorbing material strip is integrated to enhance moisture resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional single-layer sealing adhesive is used, then the device complexity is low, but the moisture barrier capability is insufficient
Solution Approach 1:
The sealing adhesive is divided into multiple layers (first sealing adhesive layer and second sealing adhesive layer) with different functions. The first layer provides primary sealing, while the second layer enhances moisture barrier capability, particularly at corner regions. This segmentation allows each layer to be optimized for its specific role, improving overall reliability without excessive complexity.
Solution Approach 2:
The patent introduces a vertical dimension to the sealing structure by stacking multiple adhesive layers. The first sealing adhesive layer is applied in a first region, and the second sealing adhesive layer is applied in a second region that overlaps or extends beyond the first region, creating a multi-layer barrier that moisture must penetrate through multiple interfaces, significantly enhancing the moisture barrier capability.
2Reliability
If traditional sealing methods are used, then the manufacturing process is simple, but moisture intrusion occurs at corners
Solution Approach 1:
The patent applies different sealing adhesive layers to different regions: the first sealing adhesive layer is applied to a first region, and the second sealing adhesive layer is applied to a second region that specifically targets corner areas and edges. This local differentiation ensures that corners, which are most vulnerable to moisture intrusion, receive enhanced sealing protection while maintaining reasonable manufacturing complexity.
Solution Approach 2:
The first sealing adhesive layer is applied first to establish a base sealing structure, and then the second sealing adhesive layer is applied subsequently to reinforce critical areas. This sequential application allows the manufacturing process to build up protection in stages, with the preliminary first layer providing initial sealing and the second layer adding enhanced protection where needed.
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 design significantly improves the moisture barrier capability, extending the service life and maintaining the picture quality of the OLED display panel by effectively preventing moisture intrusion, especially at the corners where traditional methods often fail.
Implementation Method 1
a moisture absorbing material strip integrated to enhance moisture resistance
Implementation Method 2
a first sealing adhesive strip disposed between the first substrate and the second substrate, formed of a first sealing adhesive, and surrounding a periphery of the display component to bound a first sealed region
Data Source
AI summary
Embodiments of the present disclosure provide a display panel and a display apparatus having the same. The display panel includes: a first substrate; a second substrate; a display component on the first substrate; a first sealing adhesive strip disposed between the first substrate and the second substrate, formed of a first sealing adhesive, and surrounding a periphery of the display component to bound a first sealed region having corners; and a second sealing adhesive strip disposed between the first substrate and the second substrate, formed of a second sealing adhesive, and surrounding a periphery of the first sealing adhesive strip to bound a second sealed region having corners. At least one of the corners of one of the first and second sealed regions is formed with a chamfer that faces one of the corners of the other of the first and second sealed regions.