Flexible Display Panel Grooves Enhance Adhesion
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Solution Overview
Problem
The adhesion factor between the organic and inorganic layers in flexible organic light-emitting displays is compromised when the substrate is repeatedly bent, leading to a risk of the organic layer being stripped from the inorganic layer, due to the dehydrogenization process required for amorphous silicon deposition.
Innovation Solution
Incorporating a plurality of grooves and/or through-holes in the inorganic layer to increase the contact area between the flexible substrates, thereby enhancing the adhesion factor and preventing the organic layer from being stripped during bending and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If amorphous silicon is deposited between the inorganic layer and the second organic layer to improve adhesion, then the adhesion factor is improved, but the dehydrogenization process at high temperature weakens the adhesion by lowering hydrogen content
Solution Approach 1:
The inorganic layer is designed with a porous structure containing multiple pores, which increases the surface area and contact points between layers. This porous configuration enhances mechanical interlocking and adhesion without relying solely on chemical bonding that may be weakened by dehydrogenization during processing
Solution Approach 2:
The structure combines the inorganic layer with porous characteristics integrated into its design, creating a composite structure that leverages both the protective properties of the inorganic material and the adhesion-enhancing benefits of the porous configuration
2Adaptability or versatility
If the substrate is made flexible using organic materials, then the display can be bent and deformed, but the organic layer tends to be stripped off the inorganic layer when bent repeatedly
Solution Approach 1:
The porous structure in the inorganic layer provides mechanical interlocking that maintains adhesion under flexing conditions. The pores allow the layers to deform together while maintaining contact, preventing delamination during repeated bending cycles
Solution Approach 2:
The invention transitions from considering only the planar interface between layers to incorporating the vertical dimension with pores extending through the inorganic layer. This three-dimensional porous structure provides multiple anchoring points that maintain adhesion during flexing
Data Source
AI summary
A flexible display panel and a display device are provided. The flexible display panel includes: a first flexible substrate, a second flexible substrate, and an inorganic layer located between the first flexible substrate and the second flexible substrate; where there are a plurality of grooves and/or through-holes in the inorganic layer; and the first flexible substrate contacts the second flexible substrate through the grooves and/or the through-holes. In this way, the grooves and/or the through-holes are arranged in the inorganic layer so that the first flexible substrate can contact with the second flexible substrate through the grooves and/or the through-holes to thereby increase the contact area between the second flexible substrate and the inorganic layer so as to alleviate the risk of the organic layer being stripped off the inorganic layer in the flexible display panel being bent and deformed.