Foldable Display Sliding Rail Structure for 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 corner or folding area, as the stress is transmitted across the display panel, leading to potential damage in both areas.
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 opposite to the impact direction, 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:
The display module is designed to be movable relative to the support members through slidable rails, allowing the display module to dynamically adjust its position in response to external impacts. This dynamic capability enables the system to mitigate impact forces while maintaining a large screen size, thereby resolving the contradiction between screen size and damage risk
Solution Approach 2:
Rails are introduced as intermediary components between the display module and support members. These rails facilitate controlled movement and act as a mechanical interface that allows the display module to slide in response to impacts, providing a mediating mechanism that reduces direct stress transmission while preserving the large screen area
2Reliability
If the display module is made movable to absorb impact, then the durability is improved, but the device complexity is increased
Solution Approach 1:
The support structure is segmented into multiple support members with rails disposed between them and the display module. This segmentation allows the impact absorption function to be distributed across multiple independent sliding interfaces, improving durability while keeping each individual rail component simple and manageable
Solution Approach 2:
The rails provide a flexible mechanical connection that allows controlled movement of the display module. This flexible connection enables impact absorption through simple sliding motion rather than complex mechanisms, achieving improved durability with minimal increase in structural complexity
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.