Rollable Display X-Bar Structure for Wide Screen Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing flexible display devices in mobile communication terminals face challenges in efficiently transitioning between different screen sizes, particularly in achieving a wide display screen while maintaining structural stability and reliability.
Innovation Solution
A display device with a modified X bar configuration, incorporating main and sub bars, allows for a rollable display screen to be widened or narrowed by using a sliding frame system controlled by a sliding controller, which includes elastic devices to apply forces and panel holders to prevent sagging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display is used to enable screen rolling and size variation, then adaptability and versatility are improved, but structural stability and reliability deteriorate
Solution Approach 1:
The support structure is divided into multiple segments including a fixed frame, a sliding frame, and multiple X-bar mechanisms (first and second X-bars with main bars and sub bars). This segmentation allows each component to perform specific functions while maintaining overall structural stability during screen rolling and size variation.
Solution Approach 2:
The patent employs dynamic mechanisms including sliding frames that can move along guide rails, rotatable X-bar linkages, and elastic devices that provide dynamic support. These dynamic elements enable the display device to transition between different screen sizes while maintaining structural integrity throughout the transformation process.
2Area of moving object
If a rollable display structure is implemented to achieve wide screen utilization, then area of moving object is improved, but device complexity increases
Solution Approach 1:
The X-bar mechanisms serve multiple functions: they provide structural support, guide the rolling motion, control the expansion and contraction of the display screen, and work with elastic devices to maintain tension. This multi-functionality reduces the need for separate components, thereby managing complexity while achieving wide screen utilization.
Solution Approach 2:
The sliding frame is nested within the fixed frame, and the X-bar mechanisms are integrated within the sliding controller structure. This nesting approach allows compact storage of the rolling display components when not in use, reducing overall device complexity while enabling large display area when expanded.
3Stability of the object's composition
If elastic devices are added to apply force to sub bars, then stability of object's composition is improved, but device complexity increases
Solution Approach 1:
The elastic devices are configured to automatically apply restoring force to the sub bars when the display screen is rolled or expanded. This self-service mechanism maintains structural stability without requiring active control systems, thereby minimizing the increase in device complexity while ensuring consistent compositional stability.
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 enables a wider display screen utilization and stable support even in a fully unfolded state, enhancing the reliability and usability of flexible display devices.
Implementation Method 1
Elastic devices provided in the sub bars in a state in which the pair of sub bars are connected to the central bar of the fixed frame and are connected to each other at the third rotation point apply an elastic force to the sub bars in opposite directions.
Data Source
AI summary
Provided is a display device having variable screen size. In the display device having variable screen size, a modified X bar including main bars and sub bars is provided in a rollable display device in which a display screen is widened or narrowed while rolling such that a wide display screen is realized.