Flexible Display Panel Impact Layer for Thin Bending Protection
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Solution Overview
Problem
Conventional display devices with flexible panels face challenges in reducing overall thickness and bezel size due to the need for thick polarization films and separate bending protective layers, which also increase costs and complexity.
Innovation Solution
A display device with an impact absorbing layer extending from the first area to the second area via the bending area, eliminating the need for a separate bending protective layer, and incorporating a method of attaching a cover tape and window on the impact absorbing layer to protect the display panel from external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polarization film is applied to reduce reflectance of external light, then the anti-reflective performance is improved, but the overall thickness of the display device increases
Solution Approach 1:
The patent merges the bending protective layer and polarization film into a single integrated structure. The bending protective layer is designed to serve dual functions: protecting the flexible display panel during bending operations and reducing external light reflectance. This integration eliminates the need for separate layers, thereby reducing overall thickness while maintaining both protective and optical performance.
Solution Approach 2:
The bending protective layer is designed with multi-functionality, serving as both a mechanical protective layer during bending and an optical polarization film for reducing reflectance. By incorporating polarizing materials directly into the bending protective layer structure, the patent achieves universal functionality that addresses both mechanical flexibility and optical performance requirements simultaneously.
2Reliability
If a separate bending protective layer is added to protect the flexible display panel, then the protection performance is improved, but the overall thickness and device complexity increase
Solution Approach 1:
The patent combines the bending protective layer with the polarization film into a single integrated component rather than using separate layers. This merging reduces structural complexity while maintaining comprehensive protection during bending operations. The integrated structure eliminates the need for additional adhesive layers and simplifies the manufacturing process.
Solution Approach 2:
The bending protective layer is designed to perform multiple functions simultaneously: mechanical protection during bending, optical polarization for reflectance reduction, and structural support. This multi-functionality reduces the overall number of components needed, thereby simplifying device complexity while improving reliability through comprehensive protection.
3Reliability
If multiple separate layers (polarization film and bending protective layer) are used, then the protection and optical performance are improved, but manufacturing costs increase
Solution Approach 1:
The patent merges the bending protective layer and polarization film into a single integrated layer structure, reducing the total number of manufacturing steps. Instead of separately applying adhesive layers, polarization films, and protective layers in multiple sequential steps, the integrated structure can be manufactured as a single component or applied in fewer steps, thereby reducing manufacturing costs while maintaining comprehensive protection performance.
Solution Approach 2:
By designing the bending protective layer with multi-functionality (mechanical protection plus optical polarization), the patent eliminates the need for separate dedicated polarization film and protective layer applications. This reduces material costs, manufacturing process costs, and assembly costs, making the device more cost-effective while maintaining high reliability through comprehensive protection functions.
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 solution reduces the overall thickness of the display device at the bending area, decreases bezel size, lowers manufacturing costs, and improves process efficiency while effectively protecting the display panel from external impacts without the need for a conventional bending protective layer.
Implementation Method 1
an impact absorbing layer on the display panel and continuously extending from the first area to the second area via the bending area
Data Source
AI summary
A method of providing a display device includes preparing a display panel including a first area, a bending area extending from the first area, and a second area extending from the bending area, attaching an impact absorbing layer to the display panel, removing a first removal portion of a first release film which overlaps the second area, among portions of the first release film disposed on the impact absorbing layer, and providing a cover tape on a first portion of the impact absorbing layer from which the first removal portion is removed.