Rolling Flexible Display Mechanism for Battery Space Optimization
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Solution Overview
Problem
Existing flexible display devices face challenges in implementing a large screen size due to spatial limitations and weight issues, which hinder the securement of a sufficient battery capacity and durability, especially when deformed.
Innovation Solution
A flexible display device with a rolling-type mechanism that allows the flexible display unit to change exposed areas on both front and rear surfaces through relative movement between two bodies, utilizing a driving unit with a motor, rack, and roller system to enable stable deformation and battery space optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If many components are installed inside the flexible display device to enable deformation, then the device can achieve various screen states, but the structure becomes complicated and battery installation space is reduced
Solution Approach 1:
The flexible display unit is rolled around a support roller that is disposed within the terminal body. The support roller acts as a compact core around which the display can be wound, enabling deformation without requiring complex mechanical structures. This nested configuration allows the display to transition between flat and rolled states while maintaining a compact overall device structure.
Solution Approach 2:
The flexible display unit is designed to be dynamically deformable, transitioning between a flat state for normal use and a rolled state for compact storage or alternative display configurations. The support roller enables this dynamic transformation by providing a rotating core that the display can wrap around, allowing the device to adapt its screen configuration without adding structural complexity.
2Adaptability or versatility
If many components are installed inside the flexible display device to enable deformation, then the device can achieve various screen states, but battery installation space is reduced
Solution Approach 1:
By nesting the flexible display unit around the support roller that is already disposed within the terminal body, the patent avoids adding separate deformation mechanisms that would consume battery space. The support roller serves dual purposes: enabling display deformation and maintaining a compact form factor, thereby preserving battery installation space.
3Adaptability or versatility
If the flexible display is deformed, then various screen states can be achieved, but unnecessary weight is applied to the flexible display which decreases durability
Solution Approach 1:
The support roller provides a counterbalancing structure that distributes the mechanical stress during display deformation. By rolling the display around the support roller rather than folding or bending it freely, the patent reduces concentrated stress points and unnecessary weight application on the flexible display, thereby improving durability while maintaining the ability to achieve various screen states.
4Area of stationary object
If a large screen size is implemented in a folding structure device, then display area is increased, but spatial limitations make it difficult to secure sufficient battery installation space
Solution Approach 1:
The flexible display unit can be rolled around the support roller to transition between a large flat screen configuration and a compact rolled configuration. This dynamic transformation allows the device to provide a large screen area when needed while maintaining a compact form factor for battery installation, resolving the spatial conflict between large display and battery space.
Data Source
AI summary
The present invention relates to a flexible display device, comprising: a first body; a second body configured to be movable relative to the first body; a support plate installed on the rear surface of the second body and configured to be movable relative to the second body; a flexible display unit configured such that areas exposed to the outside are changed while the first body and the second body move relative to each other; and a driving unit generating a driving force such that the second body slides with respect to the first body, wherein as the driving unit causes a movement of the second body through a rotational force by means of a motor, the areas exposed to the outside of the front part and the rear part of the flexible display unit can be changed respectively.