Flexible Display Hinge Sliding Mechanism for Length Variation
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Solution Overview
Problem
Flexible display devices with folding structures face challenges in maintaining flatness and compensating for length variations during folding and unfolding, leading to deformation issues that affect the reliability and compactness of the device.
Innovation Solution
A mechanism involving a hinge structure with relative sliding between the body and hinge portion, combined with an elastic force providing unit and magnetic forces, to compensate for length variations and maintain flatness, ensuring consistent display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a flexible display is disposed over two whole bodies connected by a hinge portion to implement a large screen, then the screen size is increased, but deformation variation occurs during folding and unfolding
Solution Approach 1:
The hinge portion is divided into multiple hinge segments (first hinge segment, second hinge segment, etc.) that can rotate relative to each other. This segmentation allows each segment to independently adjust and compensate for deformation, ensuring the display maintains consistent deformation characteristics throughout the folding and unfolding process while preserving the large screen area.
Solution Approach 2:
The hinge portion is designed with dynamic rotational capability between hinge segments, allowing the structure to adapt its configuration during folding and unfolding. This dynamic adjustment enables real-time compensation for deformation variation, maintaining reliability while achieving the desired large screen display area.
2Volume of moving object
If a hinge portion is used to fold the flexible display, then the device can be folded to a smaller size, but length variation occurs during folding and unfolding
Solution Approach 1:
The hinge portion incorporates rotational joints between multiple hinge segments, creating a dynamic structure that can adjust its effective length during folding and unfolding. This dynamic configuration compensates for length variation while enabling compact folded size.
Solution Approach 2:
The multiple hinge segments are arranged in a nested configuration where they can rotate and overlap during folding. This nesting approach allows the hinge structure to compact effectively for small folded size while compensating for length changes through the rotational movement of individual segments.
3Area of stationary object
If the flexible display is folded outward to expose the display to the outside, then the display visibility is improved, but the device size increases
Solution Approach 1:
The hinge portion is segmented into multiple rotatable sections that can be arranged in a compact nested configuration. This segmentation allows the display to fold outward for full exposure while keeping the overall device size compact through the nested arrangement of hinge segments.
Solution Approach 2:
The hinge segments are designed to nest within each other when folded, minimizing the device's external dimensions. This nesting structure enables the display to be fully exposed when folded outward while maintaining a compact form factor when closed.
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 effectively compensates for length variations and maintains the flatness of the flexible display, enhancing the reliability and compactness of the device by integrating sliding plates, elastic forces, and magnetic pressures.
Implementation Method 1
an elastic force providing unit, configured to provide an elastic force in an unfolded state of the flexible display
Implementation Method 2
a magnetic force providing unit, configured to provide a magnetic force in a folded state of the flexible display
Data Source
AI summary
A flexible display device including a first body having a first surface and a second surface opposite the first surface, a second body having a first surface and a second surface opposite the first surface, the second body having a housing, a hinge portion connecting the first body and the second body in a relatively rotatable manner, and a flexible display disposed on the first surface of the first body and first surface of the second body, the flexible display being movable between a folded state and an unfolded state, the flexible display being exposed to cover the second surface of the first body together with the second body when in the folded state is provided. The housing of the second body slides with respect to the hinge portion when the flexible display is being moved between the folded state and the unfolded state.