Rollable Display Mechanism for Compact Storage
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Solution Overview
Problem
Traditional electronic displays are not bendable or foldable, leading to increased size of electronic devices when a large display is used, as the size of the display determines the size of the device.
Innovation Solution
An electronic apparatus with a rollable display device that includes a roller for winding and unwinding the display, utilizing a tensile force application portion with a torsion spring and rotation support member to apply an elastic force, allowing the display to be wound around a roller for compact storage and expanded flatly for use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a large display is used, then the display size is improved, but the size of the electronic apparatus increases
Solution Approach 1:
The display is made dynamically configurable between two states: wound around the roller for compact storage and unwound for full display usage. The roller mechanism allows the display to transition between these states, enabling the apparatus to have a small footprint when the display is wound and provide large display area when unwound, thus resolving the contradiction between display size and apparatus size.
Solution Approach 2:
The display is nested around the roller when not in use, with the rolled display fitting within the apparatus housing. This nesting arrangement allows the large display to be contained within a compact form factor, enabling the apparatus to maintain a small size while still providing access to a large display area when needed.
2Area of stationary object
If the display is wound around the roller, then the apparatus size is reduced, but the tensile force on the display increases
Solution Approach 1:
The elastic member is configured to apply a tensile force to the display in the unwound direction, counterbalancing the compressive force exerted by the roller on the wound display. This counteracting force system ensures that the display is gently guided onto the roller without excessive compression, preventing damage while maintaining compact storage.
Solution Approach 2:
The elastic member acts as a cushioning element that absorbs and moderates the forces involved in winding and unwinding the display. By providing elastic compliance, it prevents sudden or excessive forces from being applied to the display during the winding process, protecting the display from damage while enabling compact storage.
3Area of moving object
If the display is expanded flatly, then the display area is increased, but the electrical connection stability may be compromised
Solution Approach 1:
The flexible connection member serves as an intermediary between the display and the apparatus housing, providing both mechanical support and electrical connection. Its flexibility allows it to accommodate the display's movement between wound and unwound states while maintaining stable electrical contact, thus enabling full display area without compromising connection reliability.
Solution Approach 2:
The flexible connection member is designed as a thin, flexible structure that can bend and deform to accommodate the display's expansion and contraction. This flexibility allows the electrical connection to remain intact during display movement, ensuring reliable signal transmission while enabling the display to achieve full expanded area.
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
Enables the display to be compactly stored when not in use and easily expanded for use, reducing the risk of damage from excessive tensile force and maintaining a stable electrical connection between the display and controller.
Implementation Method 1
a tensile force application portion configured to apply an elastic force to the roller to rotate in a direction to wind the rollable display
Data Source
AI summary
An electronic apparatus is provided. The apparatus includes a first body and a second body configured to move with respect to each other, a rollable display, a roller rotatably supported in the first body, wherein a first end portion of the rollable display is fixed to the roller and the rollable display is wound around an outer circumference of the roller, and a tensile force application portion configured to apply an elastic force to the roller to rotate in a direction to wind the display, the tensile force application portion rotating with the roller, in which, as the first body and second body move with respect to each other, the rollable display is wound around the roller to be accommodated in the first body or is released from the roller to expanding between the first body and the second body in a length direction.