Display Panel Bedding Metal Buffer Layer Encapsulation
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Solution Overview
Problem
Conventional display panels face encapsulation failure due to poor contact between the encapsulant and the bedding metal, leading to gaps and compromised sealing when subjected to external forces.
Innovation Solution
The display panel design includes a frit encapsulation area with the bedding metal positioned on the side of the first substrate away from the second substrate, allowing laser irradiation to reflect onto the encapsulant without direct contact, enhancing the encapsulation effect and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the encapsulant and bedding metal are placed in direct contact to improve laser-sintering efficiency, then the encapsulation effect is improved, but the encapsulation reliability deteriorates due to poor contact performance causing detachment under external force
Solution Approach 1:
The patent introduces a buffer layer as an intermediary between the encapsulant and the first bedding metal. This buffer layer prevents direct contact between the encapsulant and metal, eliminating the poor contact performance issue while still allowing the metal to reflect laser light effectively for sintering the encapsulant.
Solution Approach 2:
The patent segments the interface between encapsulant and bedding metal by inserting a buffer layer in between. This segmentation separates the functions: the buffer layer provides mechanical buffering and adhesion, while the metal layer provides laser reflection, thus resolving the contradiction between manufacturing ease and reliability.
2Reliability
If the bedding metal is positioned on the side of the first substrate away from the second substrate to avoid direct contact, then the encapsulation stability is improved, but the laser light reflection efficiency may be reduced
Solution Approach 1:
The buffer layer serves as a transparent intermediary that allows laser light to pass through to the metal layer for reflection, while simultaneously providing mechanical buffering. This resolves the contradiction by enabling both stable encapsulation and effective laser reflection.
Solution Approach 2:
The solution moves the metal layer to a different spatial position (on the opposite side of the substrate) and uses the buffer layer as an optical window, changing the dimensional arrangement to achieve both stability and reflection efficiency.
3Reliability
If a buffer layer is introduced between the encapsulant and bedding metal to prevent detachment, then the encapsulation reliability is improved, but the device complexity increases
Solution Approach 1:
The buffer layer is designed to perform multiple functions simultaneously: providing mechanical buffering to prevent detachment, serving as an adhesion layer, and allowing optical transmission for laser reflection. This multi-functionality reduces the need for additional components, thereby limiting the increase in 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 improves the encapsulation stability by preventing direct contact between the encapsulant and the metal, ensuring better adhesion and sealing, while also simplifying the manufacturing process and reducing costs.
Implementation Method 1
the bedding metal 4′ is used to reflect the laser light to the encapsulant 3′, thereby improving the fusion effect of the encapsulant 3′
Implementation Method 2
When laser-sintering the encapsulant 3′, the bedding metal 4′ is used to reflect the laser light to the encapsulant 3′
Data Source
AI summary
A display panel and a display device are provided which can avoid contact between an encapsulant and a first bedding metal, thereby improving the encapsulation effect of the display panel. The display panel includes a display area and a non-display area surrounding the display area, and a first substrate and a second substrate. The first substrate and the second substrate are positioned opposite to each other. The non-display area includes a frit encapsulation area having a first bedding metal that is located on a side of the first substrate facing away from the second substrate.