Rollable Display Mesh Sheet Fixing for Tension Stability
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Solution Overview
Problem
Conventional rollable display devices face issues with deformation of fastening parts due to tension, difficulty in achieving a slim appearance, and complex structures that complicate processing and assembly, especially when using flexible display panels with plastic substrates.
Innovation Solution
A rollable display device design featuring a main body with a main roller, link assembly, and a link-driving unit that includes a flexible display panel, a mesh sheet, and a guide plate system to manage tension, ensuring a slim appearance and improved assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the thickness of the mesh sheet is reduced to make the flexible display panel thinner, then the slim appearance is improved, but the fastening part that provides tension becomes easily deformed
Solution Approach 1:
The patent uses a mesh sheet with a specific thin film structure that maintains sufficient mechanical strength while achieving reduced thickness. The mesh configuration provides both flexibility and structural integrity, allowing the fastening parts to maintain tension without deforming even when the sheet is thin.
Solution Approach 2:
The flexible display panel employs a composite structure combining the mesh sheet with reinforcing elements and specific material layers. This composite approach allows the mesh sheet to be thin while the overall structure maintains the necessary strength and tension resistance through the combined properties of different materials.
2Strength
If the thickness of the structure configured to provide tension is increased to withstand mesh sheet tension, then the structural strength is improved, but it becomes difficult to provide a slim appearance
Solution Approach 1:
The patent distributes the tension-providing function across multiple dimensions rather than concentrating it in a single thick layer. The mesh structure itself provides dimensional stability, while fastening parts are strategically positioned at key locations, allowing thin construction overall while maintaining necessary strength through spatial distribution.
Solution Approach 2:
The tension-providing structure is segmented into multiple discrete fastening parts distributed across the flexible display panel rather than using a single continuous thick structure. This segmentation allows each fastening part to be thin yet effective, and the collective arrangement provides the necessary overall strength without increasing overall thickness.
3Reliability
If a structure is added to maintain tension in the flexible display panel, then the reliability is improved, but the device complexity and assembly difficulty increase
Solution Approach 1:
The mesh sheet structure is designed to inherently maintain tension through its own geometric configuration and material properties, rather than requiring complex external tensioning mechanisms. The mesh configuration itself provides the necessary structural integrity, and the fastening parts simply need to secure the edges, allowing the system to self-maintain tension without complex additional structures.
Solution Approach 2:
The mesh sheet serves multiple functions simultaneously: it provides the display surface, maintains structural integrity, distributes tension, and enables flexibility. The fastening parts also serve dual purposes by both securing the mesh sheet and providing the necessary tension. This multi-functionality reduces the need for separate dedicated tension-maintaining structures.
Data Source
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AI summary
A rollable display device comprises: a flexible display panel; a mesh sheet comprising, a first region where the flexible display panel is attached on a front surface thereof, a second region located above the first region, and a stepped part between the first region and the second region; a guide plate for receiving the upper portion of the mesh sheet including the second region and the stepped part, and comprising a fixing part positioned on the back surface thereof; a top cover for covering the guide plate and comprising a pressing hole formed in a location corresponding to the fixing part; and a pressing member inserted in the pressing hole so as to adhere the fixing part to the mesh sheet. The rollable display device may stably withstand the tension of the mesh sheet.