Flexible Display Device with Counterweight Support Unit
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Solution Overview
Problem
Flexible display units face challenges in maintaining a flattened state when ejected from a rolled position due to their high flexibility and restoring forces, making it difficult to achieve both portability and a large screen size.
Innovation Solution
A flexible display device comprising a display unit, a support unit, and a driving unit that allows the display unit and support unit to come into contact and maintain a flattened state through controlled surface contact and separation, utilizing opposing driving mechanisms to offset restoring forces and maintain a rigidly flattened state during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a flexible display unit is used to enable small-sized portable terminals, then portability is improved, but the display unit cannot maintain a flattened state when ejected from the rolled position
Solution Approach 1:
The patent introduces a support unit that applies counteracting force to the restoring force of the flexible display unit. The support unit is configured to contact the display unit and provide opposing force to prevent curvature, thereby maintaining a flattened state while preserving the flexibility and portability benefits.
Solution Approach 2:
The support unit acts as an intermediary element between the flexible display unit and the external environment. It mediates the interaction by providing structural support and counteracting the restoring force, enabling the display unit to maintain a flattened state without compromising its flexible nature.
2Volume of moving object
If a flexible display unit is preserved within the body in a rolled state, then space efficiency is improved, but the display unit must be re-rolled or curved due to restoring force when ejected
Solution Approach 1:
The support unit provides counteracting force to offset the restoring force that causes the display unit to curl up after ejection. This enables the display unit to remain flattened during use while still being able to be rolled back for storage, improving both ease of operation and space efficiency.
Solution Approach 2:
The system dynamically adjusts the state of the display unit between rolled (for storage) and flattened (for use) configurations. The support unit enables this dynamic transition by providing the necessary counteracting force during the flattened state, allowing easy ejection and storage operations.
3Adaptability or versatility
If a flexible display unit is used instead of a rigid display unit, then adaptability is improved, but the display unit has lower flatness when ejected from the rolled state
Solution Approach 1:
The support unit applies counteracting force to the restoring force generated by the flexible display unit. This balance of forces enables the display unit to maintain a flattened shape during use while preserving its inherent flexibility and adaptability, resolving the contradiction between flexibility and flatness.
Solution Approach 2:
The system changes the physical state parameters of the display unit by applying external force through the support unit. This allows the flexible display unit to transition between curved (rolled) and flattened states, maintaining both adaptability and flatness as needed.
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 unit to maintain a relatively flattened state during external use, ensuring a stable and large screen size while allowing for easy storage by rolling back into the support unit, addressing the limitations of traditional flexible display technologies.
Implementation Method 1
The first driving means includes a first driving shaft onto which multi-turn coils are attached, first fixation members disposed at both ends of the first driving shaft, and a first rotating body configured to wrap the first driving shaft and have a magnetic property
Data Source
AI summary
A flexible display device is disclosed which includes: a display unit; a support unit configured to selectively support the display unit; a connection unit configured to attach together one edge of the display unit and one edge of the support unit; and a driving unit connected to the other edge of the display unit and the other edge of the support unit and configured to control a plurality of operations. The plurality of operations includes a first operation, which allows the display unit and the support unit to come in contact with each other and to maintain a relatively flattened state of the display unit, and a second operation which enables the display unit and the support unit to be separated from each other for stowage.