Flexible Display Panel Scroll Mechanism for Volume-Lifetime Trade-off
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Solution Overview
Problem
Bendable display devices in prior art suffer from large volume and short lifetime due to difficulties in folding design and susceptibility to bending stress, leading to disconnection risks.
Innovation Solution
A display device design featuring a flexible display panel with a transparent cover plate and supporting board, where the panel can be partially or fully exposed within a housing, allowing for extension of the display area without increasing volume, and utilizing a scroll and active shaft mechanism to manage bending stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the screen is folded to reduce device volume, then the device becomes more compact and portable, but the screen is subjected to bending stress which reduces its lifetime and increases disconnection risk
Solution Approach 1:
The flexible display panel is extracted from the traditional fixed housing structure and allowed to extend beyond the housing boundaries. The display panel can be partially or fully exposed outside the housing, separating the display function from the housing constraints, thereby avoiding bending stress while maintaining compact device volume.
Solution Approach 2:
The display device transitions from a static fixed display structure to a dynamic adjustable display structure. The flexible display panel can dynamically adjust its exposure level between the housing and external space, allowing the device to switch between compact mode and extended display mode based on usage needs.
2Area of stationary object
If the flexible display panel is extended outside the housing to increase display area, then the display area is enlarged, but the device volume increases
Solution Approach 1:
The display area expansion is achieved by utilizing the third dimension (external space beyond housing) rather than expanding the housing volume. The flexible display panel extends in the spatial dimension outside the housing, allowing increased display area without proportionally increasing the device's enclosed volume.
Solution Approach 2:
The flexible display panel is nested within the housing structure when not in use, with portions of the panel stored inside the housing boundaries. When extended, the panel unfolds outward, creating a nested configuration that maximizes display area while minimizing the device's overall volume envelope.
Data Source
AI summary
The present disclosure provides a display device that includes a housing and a flexible display panel. The display area has an exposed part and an unexposed part, the exposed part is partially or fully exposed within the housing, and the unexposed part is received in the housing, to realize for switching between a large-screen display state and a small-screen display state. Thus, it has effects for small size and long lifetime.