Flexible Display Reinforcing Structure for Shape-Change Durability
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Solution Overview
Problem
Electronic devices with flexible displays face durability issues due to bending and external impacts, particularly when changing shapes during operations.
Innovation Solution
A reinforcing structure is disposed on the rear surface of the flexible display, featuring a support with an uneven surface and reinforcing members positioned in recesses, to enhance durability and prevent bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display is used to enable shape changing and large-screen display, then adaptability and screen area are improved, but durability and resistance to bending are worsened
Solution Approach 1:
The reinforcing structure is divided into multiple reinforcing members arranged in specific patterns (e.g., cross-shaped, grid-shaped) across the display surface. Each reinforcing member provides localized support to specific regions of the flexible display, allowing the display to maintain durability while enabling shape changing in other areas.
Solution Approach 2:
Reinforcing members are strategically positioned in specific regions where bending stress is most intense during shape changing operations. The reinforcement is not uniformly distributed but concentrated in critical areas, providing targeted protection while maintaining overall flexibility where needed.
2Reliability
If a reinforcing structure is added to protect the flexible display, then durability is improved, but device complexity increases
Solution Approach 1:
The reinforcing members are integrated with the display structure itself, forming a unified component rather than separate attachments. The reinforcing structure shares the same substrate or bonding layer as the display, eliminating the need for additional mounting mechanisms and reducing overall structural complexity.
Solution Approach 2:
The reinforcing members are pre-formed with specific geometric patterns (cross-shaped, grid-shaped, etc.) that inherently provide structural support. This preliminary structuring allows the reinforcement to be effective without requiring complex assembly or additional support mechanisms during operation.
3Adaptability or versatility
If the flexible display is bent during shape changing, then adaptability is improved, but resistance to external impact is worsened
Solution Approach 1:
The display surface is segmented into multiple regions by the reinforcing members, creating a network of support zones. This segmentation allows the display to bend in controlled ways while maintaining resistance to external impacts, as the reinforcing members distribute and absorb impact forces across multiple locations.
Solution Approach 2:
The reinforcing members are made from materials with different mechanical properties than the flexible display substrate, creating a composite structure. This composite construction provides enhanced impact resistance while maintaining the flexibility needed for shape changing, combining the advantages of both material types.
Data Source
AI summary
An electronic device including a reinforcing structure is provided. The electronic device includes a first housing, a second housing movable relative to the first housing, a flexible display supported by at least one of the first housing or the second housing, and a reinforcing structure disposed on a rear surface of the flexible display, wherein the flexible display may include a rolling portion that is at least partially bent in a process of changing from the first state to the second state, and the reinforcing structure may include a support coupled to the flexible display so as to cover a rear surface of the rolling portion.