Roll-Slide Terminal Support Structure for Flexible Display Durability
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Solution Overview
Problem
Existing rollable mobile terminals face issues with the durability of flexible displays, as they are limited to folding at specific positions, leading to potential damage from external impacts and instability during extension.
Innovation Solution
A roll-slide mobile terminal design featuring a first and second frame that slide relative to each other, with a third frame supporting a flexible display unit, including a support structure with plastic resin and metal bars to stabilize the display and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flexible display unit is allowed to fold at any position, then the durability is improved, but the structural control becomes difficult
Solution Approach 1:
The support structure is designed to dynamically adapt its configuration based on the display's extended position. As the display extends, the support structure transitions from a compact state to an expanded state, automatically providing support without requiring complex control mechanisms. This dynamic behavior resolves the contradiction by making the structure self-regulating rather than control-dependent.
Solution Approach 2:
The support structure utilizes the display's own extension motion to trigger its support function. As the display is pulled outward, the support structure automatically deploys to provide stabilization, and retracts when the display is retracted. This self-service mechanism eliminates the need for external control systems while maintaining durability benefits.
2Area of moving object
If the flexible display unit is extended to a larger size, then the screen area is increased, but the stability during extension is reduced
Solution Approach 1:
The support structure introduces a new spatial dimension by deploying lateral support elements that extend perpendicular to the display's extension direction. This creates a three-dimensional support framework that stabilizes the display across multiple axes simultaneously, allowing large screen areas to maintain stability during extension without compromising either parameter.
3Volume of moving object
If the flexible display unit is made more flexible for rolling, then the compactness is improved, but the resistance to external impact is reduced
Solution Approach 1:
The support structure is positioned to provide protective support before external impacts can reach the flexible display. When the display is in use at extended positions, the support structure creates a protective framework that absorbs and distributes impact forces, preventing direct transmission to the display. This beforehand protection allows the display to remain highly flexible for compact rolling while gaining impact resistance during operation.
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3(a)~3(b)
AI summary
A mobile terminal is disclosed including a first frame, a second frame slidable with respect to the first frame between a first position and a second position, a third frame at a rear side and configured to be slidable with respect to the second frame between a third position and a fourth position, a flexible display unit including a first area, a second area, and a third area, and a sliding unit configured to allow the second frame to slide between the first position and the second position and the third frame to slide between the third position and the fourth position, wherein an area of the third area visible from a front side increases as the second frame slides from the first position to the second position and the third frame slides from the third position to the fourth position.