Segmented Flexible Chassis for Display Bending Stress
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Solution Overview
Problem
Current flexible display devices lack adequate support mechanisms that can accommodate the change in position of the chassis relative to the flexible display as it bends, leading to potential damage and distorted images due to stress and deformation.
Innovation Solution
A flexible chassis design that includes a hinge and sliding mechanisms, allowing the flexible display and chassis to move relative to each other, providing support in various configurations from 0° to 360° without damaging the display, and incorporating materials like Nitinol, titanium, or spring steel for flexible support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid chassis is used to support the flexible display, then structural strength is improved, but the chassis cannot accommodate the bending motion causing stress and deformation
Solution Approach 1:
The chassis is divided into multiple segments that can move independently relative to each other. The chassis includes a first portion and a second portion that can slide or move relative to one another, allowing each segment to adapt to the bending curvature while maintaining overall structural strength.
Solution Approach 2:
The chassis transitions from a static rigid structure to a dynamic structure that can change its configuration. The chassis includes movable components such as sliding mechanisms and flexible connections that allow it to adapt its shape and position during bending, enabling it to accommodate the display's motion while maintaining support strength.
2Adaptability or versatility
If the chassis is made flexible to accommodate bending, then adaptability is improved, but structural strength and support stability deteriorate
Solution Approach 1:
The chassis is segmented into multiple rigid portions connected by flexible elements. Each segment maintains its rigidity for strong support, while the connections between segments provide the necessary flexibility to accommodate bending. This segmentation allows the chassis to combine strength and adaptability simultaneously.
Solution Approach 2:
The chassis employs composite construction combining rigid materials (such as metal or reinforced polymers) for the main structural portions with flexible materials (such as elastomers or flexible joints) for the connections. This composite approach enables the chassis to provide stable support while accommodating bending motion.
3Ease of manufacture
If the chassis position is fixed relative to the display, then manufacturing simplicity is improved, but the display suffers from stress and deformation during bending
Solution Approach 1:
The chassis incorporates dynamic elements such as sliding mechanisms, flexible connections, and movable mounting structures that allow the chassis to move and adjust its position relative to the display during bending. This dynamic design prevents stress concentration and maintains display integrity while remaining manufacturable through standardized components.
Solution Approach 2:
The chassis introduces intermediary elements between the rigid chassis structure and the flexible display, such as flexible mounting brackets, sliding mechanisms, and cushioning elements. These intermediaries absorb and distribute stress, protecting the display from direct mechanical stress while maintaining a relatively simple overall assembly structure.
4Reliability
If the chassis is designed to move with the display during bending, then display protection is improved, but device complexity increases
Solution Approach 1:
The chassis is segmented into simple, modular portions that can move independently. Each segment is a relatively simple component that can be manufactured using standard processes, and their modular nature allows for easy assembly and maintenance. This segmentation provides display protection without requiring a single complex integrated mechanism.
Solution Approach 2:
The chassis design allows certain flexible portions to temporarily deform or move during bending, and then returns to its original configuration. The flexible mounting structures can accommodate temporary position changes and then recover, providing protection during bending without requiring complex active control mechanisms.
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 flexible chassis ensures the flexible display remains undamaged and maintains an even shape across different configurations, preventing deformation and enhancing user experience by accommodating the bending arc length differences between the display and chassis.
Implementation Method 1
The flexible chassis ensures the flexible display remains undamaged and maintains an even shape across different configurations, preventing deformation and enhancing user experience by accommodating the bending arc length differences between the display and chassis
Implementation Method 2
incorporating materials like Nitinol, titanium, or spring steel for flexible support
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 1E~1F
AI summary
Particular embodiments described herein provide for an electronic device configured to include a flexible display (108), a hinge (106), and a chassis (180a). The flexible display has a display length and the chassis has a chassis length that is about the same length as the display length when the electronic device is relatively flat. In some examples, the chassis includes a flexible display support coupled to the flexible display and one or more slide mechanisms to accommodate the change in position of the chassis relatively to the flexible display when the electronic device is bent. In other examples, the hinge includes one or more chassis coupling tabs and the one or more chassis coupling tabs can accommodate the change in position of the chassis relatively to the flexible display when the electronic device is bent.