Flexible Display Rolling Hinge to Hide Support Bar Patterns
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Solution Overview
Problem
Existing flexible displays in mobile terminals face issues with support structures being transferred to the front surface, causing visibility of support bars and compromising durability.
Innovation Solution
A mobile terminal design featuring a body with sliding frames, a flexible display, a rolling hinge, and an adhesive tape with slits to support the display, ensuring the support bars are hidden from view and reducing stress differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rolling hinge with support bars is used to support the flexible display, then the display can maintain a flat state and structural stability is improved, but the support bars are transferred to the front surface of the display and become visible
Solution Approach 1:
The adhesive tape is divided into multiple segments with slits between them, allowing each segment to independently attach to support bars while the slits prevent stress transfer that would make the bars visible. This segmentation resolves the contradiction by maintaining structural support while eliminating the visual defect.
Solution Approach 2:
The adhesive tape acts as an intermediary between the rolling hinge support bars and the flexible display. By introducing this intermediate layer with slits, the support function is maintained while the harmful visual transfer of support bar patterns is prevented.
2Strength
If adhesive tape is used to attach the rolling hinge to the flexible display, then the display is supported, but stress differences cause the support bar pattern to transfer to the front surface
Solution Approach 1:
The continuous adhesive tape is segmented into multiple sections with slits between them. This segmentation maintains overall attachment strength while allowing localized stress relief at the slit positions, preventing the uniform stress transfer that causes support bar patterns to appear on the display front surface.
Solution Approach 2:
The adhesive tape has different properties in different regions: the adhesive portions provide strong attachment, while the slit regions provide stress relief. This local differentiation resolves the contradiction by maintaining strength where needed while preventing pattern transfer through strategic stress relief zones.
3Stability of the object's composition
If the flexible display is bent at a specific position, then the rolling hinge can provide support, but the durability of the flexible display is reduced due to repeated bending at the same point
Solution Approach 1:
The rolling hinge structure with segmented adhesive tape allows the display to be supported while accommodating dynamic bending movements. The slits in the adhesive tape enable the structure to flex without creating stress concentration points that would reduce durability, thus maintaining both support stability and display reliability.
Data Source
AI summary
This mobile terminal comprises: a flexible display unit that surrounds one end of a body and includes a front part located on the front surface of the body and a rear part located on the rear surface thereof, wherein the surface areas of the front part and the rear part change as the second frame moves by sliding; a rolling hinge that is located on the rear surface of the flexible display unit and can deform according to the bending deformation of the flexible display unit; and an adhesive tape that attaches the rolling hinge to the display unit, wherein the rolling hinge includes a plurality of support bars extending in a third direction perpendicular to a first direction and arranged side by side in the first direction, and the adhesive tape includes a first slit extending in the third direction.