Foldable Display Support Mechanism for Thin Front-Folded State
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Solution Overview
Problem
Foldable display apparatuses become thick and fail to display normally when in the front-folded state due to the squeezing action on the bent portion of the flexible screen from the support parts.
Innovation Solution
A foldable display apparatus design featuring a flexible screen, a support member with two groups of rotating members, including a crankshaft, rotating part, connecting lever, and connecting rod, which allows the second support parts to slide relative to the rotating part, creating a U-shaped bent portion and avoiding the squeezing action, thus maintaining a thin thickness and enabling normal display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the support parts are located on both sides of the folded flexible screen in the front-folded state, then the foldable display apparatus can be supported, but the bent portion of the flexible screen becomes drop-shaped and the apparatus becomes thick
Solution Approach 1:
The support parts are designed to move dynamically between different positions. In the front-folded state, they relocate to the space between the two halves of the flexible screen rather than remaining on both sides, thereby reducing the thickness while maintaining support functionality. This dynamic repositioning resolves the contradiction between support stability and thickness.
Solution Approach 2:
The support parts transition from a two-dimensional arrangement (on both sides of the screen) to utilizing the third dimension (the space between screen layers in the folded state). By positioning themselves in the inter-layer space, they reduce the overall thickness while providing necessary support, effectively resolving the thickness contradiction.
2Device complexity
If the support parts are located on both sides of the folded flexible screen, then the apparatus structure is simple, but the squeezing action on the bent portion causes display failure
Solution Approach 1:
The support parts dynamically reposition to avoid the bent portion of the flexible screen during folding. By moving to the space between screen layers in the front-folded state, they eliminate the harmful squeezing action that causes display failure, thereby improving reliability without significantly increasing structural complexity.
Solution Approach 2:
The support parts are extracted from the harmful position (on both sides of the folded screen where they cause squeezing) and relocated to a beneficial position (between the screen layers). This extraction eliminates the display failure issue while maintaining the simple support structure.
3Volume of moving object
If the second support parts are positioned close to the first support part, then the structure is compact, but the bent portion of the flexible screen is subjected to squeezing action
Solution Approach 1:
The second support parts dynamically adjust their position relative to the first support part. In the folded state, they move to the space between the screen layers, increasing the distance from the bent portion and eliminating squeezing action, while maintaining compact overall structure through controlled movement.
Solution Approach 2:
The space between the two halves of the flexible screen acts as an intermediary zone where the second support parts relocate. This intermediary positioning allows them to maintain structural compactness while avoiding direct contact with and squeezing of the bent portion, thereby resolving the harmful effect.
Data Source
AI summary
In a foldable display apparatus, two second support parts and a first support part jointly support a flexible screen, a rotating part is slidably connected to the second support part on the same side of the first support part, and the second support part rotates relative to the first direction of the flexible screen and away from the first support part, a crackshaft is slidably connected with the rotating part to drive the rotating part to rotate therearound, a connecting lever drives the rotating part to slide toward the crankshaft along a thickness direction, the connecting lever is hinged at its two ends to the fixed portion and the rotating part respectively, the connecting rob is hinged at its two ends to the fixed portion and the second support part respectively, the bent portion of the flexible screen is U-shaped under the action of the second support parts.