Foldable Display Sliding Rails for Corner Impact Protection
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Solution Overview
Problem
Foldable display devices are prone to damage and deformation due to external impacts, particularly when the impact is applied to the corners or folding areas, as the stress is transmitted across the display panel, leading to potential damage in both the impacted area and the folding region.
Innovation Solution
Incorporating rails between the display panel and support members that are slidable in specific directions to absorb and distribute external impacts, reducing the risk of damage by allowing the display module to move in a direction opposite to the impact, thereby minimizing stress on the folding area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display panel is made larger in foldable display devices, then the screen size is increased, but the risk of damage and deformation due to external impact is increased
Solution Approach 1:
A rail structure is introduced as an intermediary component between the display panel and the support member. The rail includes a first rail coupled to the display panel and a second rail coupled to the support member, with a gap between them that allows the display panel to move relative to the support member when impacted, thereby protecting the display panel from direct impact forces
Solution Approach 2:
The rail structure enables dynamic movement between the display panel and support member. When an external impact is applied, the display panel can slide along the rail in a moving direction, converting static impact energy into kinetic energy of movement, thereby reducing the peak stress on the display panel and folding area
2Area of moving object
If the display panel is made larger, then the screen area is increased, but the stress transmission to the folding area is increased
Solution Approach 1:
The rail structure acts as a stress-isolating intermediary. The gap between the first rail and second rail creates a decoupling effect that prevents stress from being directly transmitted from the display panel to the support member and folding area, allowing stress to be distributed over a larger area and time period
Data Source
AI summary
A foldable display device includes a first support member and a second support member separated from each other and each including a short side and long side, a display module disposed on the first support member and the second support member, a hinge which couples a side of the first support member and a side of the second support member, a first rail disposed between the first support member and the display module and disposed along the long side of the first support member, and a second rail disposed between the second support member and the display module and disposed along the long side of the second support member, where the first rail and the second rail are slidable in a first moving direction and a second moving direction opposite to the first moving direction.