Mesh Cushioning Layer in Thin Film Packaging for Display Crack Resistance
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Solution Overview
Problem
Conventional display devices with high screen ratios are prone to cracking due to stress concentration during cutting or under external forces like impact, which can lead to screen damage.
Innovation Solution
A thin film packaging structure incorporating a composite film layer with a mesh cushioning layer embedded within an organic film layer, providing flexibility to cushion stress and reduce stress propagation, comprising materials like polyethylene, polypropylene, or graphene, arranged in a specific mesh pattern to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional thin film packaging structure is used to achieve high screen ratio, then the display area is increased, but the screen becomes prone to cracking under stress
Solution Approach 1:
The patent applies composite materials by combining organic film layers with mesh cushioning layers to create a multi-layer packaging structure. The organic film provides barrier properties while the mesh cushioning layer provides flexibility and stress distribution, resolving the contradiction between large display area and crack resistance.
Solution Approach 2:
The mesh cushioning layer is selectively embedded at specific positions within the organic film structure where stress concentration is most likely to occur. This localized reinforcement provides crack resistance exactly where needed without compromising the overall large display area.
2Strength
If the packaging structure is made thicker to improve strength, then crack resistance is enhanced, but the overall thickness increases
Solution Approach 1:
The patent uses flexible mesh cushioning layers embedded within thin organic film structures. This flexible mesh design provides enhanced crack resistance through stress distribution and energy absorption while maintaining the thin profile necessary for modern display devices.
Solution Approach 2:
The mesh cushioning layer acts as an intermediary between the rigid organic film layers, absorbing and distributing stress before it can propagate through the structure. This mediator layer provides strength enhancement without requiring increased overall thickness.
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 mesh cushioning layer effectively prevents cracking by distributing stress, thereby improving the strength and longevity of the display screen without increasing the overall thickness of the packaging structure.
Implementation Method 1
the mesh cushioning layer can effectively cushion stress acting on the display screen, and reduce stress propagation
Implementation Method 2
the mesh cushioning layer has better flexibility
Data Source
AI summary
The present disclosure relates to a thin film packaging structure, which includes at least one first composite film layer. The first composite film layer includes at least one first organic film layer and at least one mesh cushioning layer. A surface of at least part of the first organic film layers is provided with the mesh cushioning layer, and/or at least part of the first organic film layers is embedded with the mesh cushioning layer. According to applying the thin film packaging structure of the present disclosure, the mesh cushioning layer has better flexibility. During cutting process or under the influence of external forces, the mesh cushioning layer can effectively cushion stress acting on a display screen, and reduce stress propagation along a direction perpendicular to a thickness direction of the display screen, thereby avoiding cracking of the display screen effectively. The present disclosure further relates to a display device.