Encapsulation Assembly with Regular Polygon Notch Array
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Solution Overview
Problem
Current encapsulation assemblies, such as AMOLED display devices, face limitations in adhesive force and encapsulation performance due to the quadrangular shape of notches in substrates, which restricts the contact surface area and allows permeability to water or oxygen.
Innovation Solution
The substrate features a regular polygon-shaped notch array with alternating rows and interlaced notches, increasing the number of notches in a given area, thereby enhancing the contact surface area with the adhesive layer and improving encapsulation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quadrangular notches are used in the substrate, then the manufacturing process is simple, but the contact surface area between substrate and adhesive layer is limited, resulting in insufficient adhesive force and permeability to water or oxygen
Solution Approach 1:
The substrate surface is segmented into multiple notches arranged in an array pattern, dividing the encapsulation interface into numerous discrete contact points. This segmentation increases the total contact surface area between substrate and adhesive layer, thereby improving adhesive force and encapsulation performance while maintaining manufacturability through systematic arrangement
Solution Approach 2:
The notch arrangement transitions from a single-layer quadrangular pattern to a multi-row array configuration with alternating rows. This dimensional expansion in the arrangement pattern allows for increased notch density and contact surface area without significantly increasing manufacturing complexity, as the pattern can be replicated systematically across the substrate surface
2Strength
If the number of notches is increased to improve contact surface area, then adhesive force and encapsulation performance improve, but the manufacturing complexity and difficulty increase
Solution Approach 1:
The notch parameters (shape, size, spacing, and arrangement pattern) are optimized to achieve maximum contact surface area within manufacturing capabilities. By systematically varying these parameters in a regular array pattern, the design achieves high adhesive force while maintaining ease of manufacture through standardized fabrication processes
3Area of stationary object
If regular polygon-shaped notches are used instead of quadrangular notches, then the contact surface area and adhesive force are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The invention employs regular polygon shapes (such as triangles, quadrangles, pentagons, hexagons, or octagons) with specific asymmetric arrangements in alternating rows. This asymmetric yet regular pattern increases contact surface area while maintaining manufacturability, as the systematic variation in shape and arrangement can be achieved through standard photolithography and etching processes without requiring excessive manufacturing precision
Data Source
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AI summary
A substrate to be encapsulated, an encapsulation assembly and a display device are provided. The substrate to be encapsulated comprises a base substrate, and a plurality of notches arranged in an array located in a region to be attached to an encapsulation layer, wherein the plurality of notches have a same shape of regular polygon.