Adjustable Curved Display Linkage for Smooth Low-Noise Bending
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Solution Overview
Problem
Existing display devices, particularly curved OLED displays, face challenges in usability and durability due to irregular curvature and friction-related noise during bending, which affects user experience and device longevity.
Innovation Solution
A display device design featuring a bending module with links and link brackets that allow for adjustable curvature, utilizing polyacetal and SUS materials to minimize friction and wear, along with a guide shaft and moving block mechanism to change the angle of links, enabling seamless transitions between flat and bent states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curved display module is implemented to increase user immersion, then the sense of immersion is improved, but viewing convenience for multiple users deteriorates
Solution Approach 1:
The display device enables dynamic curvature adjustment through a bending module with links and link brackets, allowing the display to transition between flat and curved states. This resolves the contradiction by making the curvature adaptive rather than fixed, so the display can optimize for immersion when needed while maintaining flat configuration for multi-user viewing convenience
2Shape
If the display device is bent into a curved shape, then the curvature is changed to improve immersion, but irregular curvature and friction noise occur affecting durability
Solution Approach 1:
The bending mechanism is segmented into multiple links and link brackets that work together to achieve controlled curvature. This segmentation allows each component to bear specific loads and move in coordinated fashion, preventing irregular curvature and reducing friction-induced wear that would compromise durability
Solution Approach 2:
The link and link bracket assembly acts as an intermediary mechanism between the bending force and the display module. This intermediary structure distributes stresses evenly and ensures smooth, regular curvature changes while minimizing direct friction contact, thereby protecting the display module from wear and maintaining reliability
3Adaptability or versatility
If a bending module with links and link brackets is used to enable curvature adjustment, then adaptability is improved, but device complexity increases
Solution Approach 1:
The link and link bracket assembly employs an asymmetric linkage mechanism that provides efficient curvature control with minimal components. The asymmetric design allows the structure to achieve the desired adaptability while maintaining relative simplicity by optimizing the geometric relationships between parts rather than using symmetric, redundant configurations
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
The solution enhances usability by eliminating irregular curvature and reducing friction noise, improving durability by minimizing wear and noise, allowing users to adjust the display shape as needed while maintaining a smooth user experience.
Implementation Method 1
The link side block and the moving bar may contain polyacetal (POM: Poly Oxy Methylen). A hardness of the moving bar may be greater than a hardness of the side block.
Data Source
AI summary
A display device includes a main body including a display module for outputting an image, a bending module located at a center of a rear surface of the main body, a pair of links respectively extending in left and right directions, wherein one end of the link is coupled to the bending module, and link brackets respectively located at left and right ends of the main body, wherein the other end of each link is connected to each link bracket, the bending module changes an angle of the pair of links, and, when the bending module is driven, the other end of the link slides horizontally with respect to the link bracket. The display device is able to switch a state of the display module into a flat state or a bent state, so that a user is able to use the display device in a desired shape.