Flexible Laminated Structure Patterned Adhesion
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Solution Overview
Problem
The adherence between organic and inorganic material layers in flexible displays is poor due to their different properties, leading to a peeling effect when the display flexes, which affects structural reliability.
Innovation Solution
A flexible laminated structure with patterned structures on a first protective layer, where each patterned structure has a smaller width adjacent to the first protective layer and a larger width away from it, enhancing adherence between the second protective layer and the first protective layer, using materials like silicon oxide and silicon nitride, and silicon oxynitride with varying oxygen or nitrogen content for improved etching and contact area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If organic and inorganic material layers are stacked to protect the flexible display panel, then protection from external moisture and oxygen is improved, but adherence between the layers deteriorates due to different material properties
Solution Approach 1:
The protective layer is segmented into multiple inorganic material layers (first, second, and third inorganic material layers) with different properties. Each layer serves a specific function: the first provides protection, the second with silicon oxide enhances adherence to the organic layer, and the third provides additional protection. This segmentation resolves the adherence problem while maintaining protective functionality.
Solution Approach 2:
The patent uses composite material structure combining organic material layers and multiple inorganic material layers. The composite structure leverages the complementary properties of different materials: organic layers provide flexibility and baseline protection, while inorganic layers provide enhanced barrier properties and adherence enhancement, particularly the silicon oxide layer that bridges the organic-inorganic interface.
2Object-affected harmful factors
If multiple inorganic material layers are stacked to enhance protection, then protection performance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent controls the thickness parameters of each inorganic material layer to optimize both protection performance and manufacturing feasibility. The first inorganic layer is 50-150 nm, the second (silicon oxide) is 5-20 nm, and the third is 50-150 nm. By precisely controlling these parameters, the patent achieves effective protection while maintaining manufacturability through standardized deposition processes.
Data Source
AI summary
A flexible laminated structure includes a first protective layer, a plurality of patterned structures, and a second protective layer. The patterned structures are disposed on the first protective layer and expose a portion of the first protective layer. Each of the patterned structures has a first width adjacent to the first protective layer and a second width away from the first protective layer, and the first width is smaller than the second width. The second protective layer is disposed on the first protective layer and covers the patterned structures and the first protective layer.