Flexible Display Functional Layer Integration to Cut Film Complexity
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Solution Overview
Problem
The manufacturing of flexible display devices with integrated functional layers is complex and costly due to the use of multiple films, which complicates the process and increases production costs.
Innovation Solution
Integrating a light-blocking layer and an impact-absorbing layer into a single functional layer, simplifying the cover panel formation process and reducing the number of films used, thereby lowering manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate films (light-blocking layer and impact-absorbing layer) are used in the cover panel, then the functional properties (heat dissipation, electromagnetic shielding, shock absorption) are maintained, but the manufacturing complexity and production costs increase
Solution Approach 1:
The patent combines the light-blocking layer and impact-absorbing layer into a single integrated functional layer. This functional layer contains both light-blocking particles and impact-absorbing particles distributed within a polymer matrix, eliminating the need for separate films while maintaining both light-blocking and shock absorption functions. The merging principle directly resolves the contradiction by reducing manufacturing complexity without sacrificing functional properties.
Solution Approach 2:
The integrated functional layer serves multiple functions simultaneously: it provides light-blocking capability through light-blocking particles, impact absorption through elastomer particles, heat dissipation through the polymer matrix, and electromagnetic shielding. This multi-functional design allows a single layer to replace multiple specialized layers, reducing overall device complexity while maintaining all necessary functional properties.
2Reliability
If multiple separate films are used in the cover panel, then the functional properties are maintained, but the number of films and production costs increase
Solution Approach 1:
The patent merges multiple functional films into a single integrated layer that contains both light-blocking and impact-absorbing functionalities. This reduces the quantity of separate film materials from two or more distinct films to one composite functional layer, directly addressing the contradiction between maintaining functional properties and reducing the number of films used.
3Device complexity
If a single integrated functional layer is used, then manufacturing complexity and costs are reduced, but the functional properties must be maintained
Solution Approach 1:
The integrated functional layer employs local quality by distributing different types of particles (light-blocking particles and impact-absorbing elastomer particles) throughout the polymer matrix. Each particle type performs its specific function locally within the composite structure, ensuring that both light-blocking and shock absorption properties are maintained throughout the layer while using a single integrated structure.
Solution Approach 2:
The functional layer is constructed as a composite material consisting of a polymer matrix combined with dispersed light-blocking particles and impact-absorbing elastomer particles. This composite structure allows the single layer to exhibit multiple functional properties simultaneously, resolving the contradiction by maintaining reliability through material composition rather than through multiple separate layers.
Data Source
AI summary
A display device includes: a display panel having one face, and another face opposite to the one face; a functional layer on the one face of the display panel, and including a light-blocking material; and a display driving substrate on the other face of the display panel, and electrically connected to the display panel. The functional layer includes a first portion in contact with the display driving substrate, and a second portion spaced from the display driving substrate, and a hardness of the first portion is greater than a hardness of the second portion.