Flexible Display Module Layer That Stiffens Under Impact
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Solution Overview
Problem
Flexible display modules have poor impact-resistant performance in their flexible regions due to a low elastic modulus, which makes them susceptible to damage from impacts.
Innovation Solution
Incorporating a flexible impact-resistant layer with an elastic modulus that positively correlates with impact load, allowing it to rapidly increase in modulus under impact to enhance protection, and optionally using multiple layers strategically positioned to provide comprehensive coverage and support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible support component is used in the flexible region to achieve deformation, then the display module achieves flexibility, but the impact-resistant performance deteriorates
Solution Approach 1:
The patent applies composite materials by combining a flexible base substrate with an impact-resistant coating layer. The coating layer contains a high elastic modulus polymer matrix with dispersed reinforcement particles (such as silica, alumina, or carbon-based materials). This composite structure provides both flexibility from the base substrate and impact resistance from the reinforced coating, resolving the contradiction between flexibility and impact resistance.
Solution Approach 2:
The patent implements local quality by applying the impact-resistant coating selectively to the flexible region of the display module. The coating is applied only where impact protection is needed, while maintaining the overall flexibility of the flexible region. This localized application provides impact resistance without compromising the flexibility required for deformation.
2Adaptability or versatility
If the elastic modulus of the flexible region is reduced to enable deformation, then the display module achieves flexibility, but the strength under impact load deteriorates
Solution Approach 1:
The patent applies dynamics by using a coating layer with strain-rate-dependent elastic modulus. The coating material transitions from a softer state during normal deformation to a stiffer state during impact events. The high elastic modulus polymer matrix with dispersed particles provides strain-rate hardening behavior, automatically increasing strength when impact occurs while maintaining flexibility during normal operation.
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 significantly improves the impact resistance of flexible display modules by minimizing deformation and protecting underlying components during impacts, while maintaining flexibility under normal conditions.
Implementation Method 1
an elastic modulus of the local region is positively related to the impact load which the local region is subjected to
Data Source
AI summary
Disclosed are a display module. The display module display module has a flexible region and rigid regions located at both sides of the flexible region. The display module includes at least one flexible impact-resistant layer, and the impact-resistant layer at least covers the flexible region; when a local region of the impact-resistant layer is subjected to an impact load, an elastic modulus of the local region is positively related to the impact load which the local region is subjected to.