Rollable Display Roller Structure for Precise Panel Unwinding
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Solution Overview
Problem
Existing rollable display devices face challenges in precisely winding or unwinding display panels, often requiring complex mechanisms with intermediate media for force transmission, which complicates the structure and limits design flexibility and space efficiency.
Innovation Solution
A simplified structure where a driving unit directly rotates a roller, and a lifting unit with an elastic member directly transmits force to links, allowing precise control of the display panel's winding or unwinding without intermediate media, with the driving and lifting units positioned outside the roller for increased design freedom and ease of maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If intermediate media are used for force transmission in the driving mechanism, then the structure becomes more complex, but the precision of roller control is improved
Solution Approach 1:
The patent removes intermediate transmission media (gears, belts, etc.) from the driving mechanism, achieving direct force transmission from the driving unit to the roller. This extraction of unnecessary components simplifies the structure while maintaining control precision through direct coupling.
Solution Approach 2:
The patent introduces a force transmission link that directly connects the driving unit to the roller, eliminating the need for complex intermediate media. This direct link serves as a simplified intermediary that maintains force transmission efficiency while reducing structural complexity.
2Reliability
If intermediate media are used for force transmission, then the mechanism becomes more complex, but the reliability of force transmission is improved
Solution Approach 1:
The patent extracts intermediate transmission components from the lifting mechanism, achieving direct force transmission from the lifting unit through the elastic member to the link. This direct connection reduces the number of potential failure points while maintaining transmission reliability.
Solution Approach 2:
The elastic member in the lifting mechanism provides self-regulating force transmission, automatically adjusting to maintain reliable connection between the lifting unit and link without requiring additional control components or intermediate media.
3Volume of moving object
If the driving unit and lifting unit are positioned inside the roller, then the structure is compact, but the design flexibility and maintainability are reduced
Solution Approach 1:
The patent segments the winding mechanism into separate functional modules: the roller assembly and the driving/lifting units. This segmentation allows independent optimization of each module, improving design flexibility and maintainability while maintaining compact overall structure.
Solution Approach 2:
The patent repositions the driving unit and lifting unit from inside the roller to outside the roller, utilizing external space for component placement. This dimensional rearrangement maintains compact volume while significantly improving design flexibility and accessibility for maintenance.
4Volume of moving object
If the driving unit and lifting unit are positioned inside the roller, then the structure is compact, but the ease of maintenance is reduced
Solution Approach 1:
By segmenting the mechanism and positioning the driving unit and lifting unit externally, the patent enables independent access to each component for maintenance without disassembling the entire roller assembly, significantly improving ease of repair.
Solution Approach 2:
The external positioning of driving and lifting units creates accessible spatial arrangements that allow maintenance personnel to reach and service components from outside the roller assembly, eliminating the need for complex disassembly procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables precise control of the display panel's state, reduces the device's volume, simplifies the mechanism, and allows for easier adjustment of flatness, while enhancing the design flexibility and maintainability of the driving and lifting units.
Implementation Method 1
a lifting unit which is connected to an other end of the link assembly and lifts the link assembly
Data Source
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AI summary
Provided is a display device. The display device includes: a display panel (DP), a roller (11) to which a lower edge of the display panel is fixed, a plurality of links (121) having one end connected to an upper edge of the display panel, a driving unit (140) which is disposed at the outside of the roller to rotate the roller, and an elastic member (150) which is connected to the other end of each of the plurality of links to be disposed at the outside of the roller. Accordingly, the force of the driving unit is directly transmitted to the roller and the force of the elastic member is directly transmitted to the link, so that the configuration of the display device may be simplified.