Flexible Display Rolling Mechanism for Multi-Mode Screen Extension
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Solution Overview
Problem
Conventional flexible display devices lack the ability to seamlessly transition between folding, unfolding, and extending states without applying unnecessary load, limiting their usability and screen size options.
Innovation Solution
A flexible display device with a structure where one body is rotatably connected to another, featuring a flexible display unit that can be rolled and supported by a rear plate, allowing for smooth transformation between folding, unfolding, and extending states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a flexible display is arranged on two bodies through a folding structure, then a large screen can be implemented, but unnecessary load may be applied to the flexible display during folding and unfolding operations
Solution Approach 1:
The device body is divided into first and second bodies that can rotate relative to each other, allowing the flexible display to be segmented across different planes. This segmentation enables the display to maintain its integrity while accommodating folding operations, reducing unnecessary load during transitions between folded and unfolded states.
Solution Approach 2:
The patent introduces a dynamic rolling mechanism where the flexible display unit can roll along the rear plate during folding and unfolding operations. This dynamic movement allows the display to adapt to changing spatial requirements without applying excessive static load, enhancing reliability while maintaining large screen area.
2Ease of operation
If a flexible display is transformable into folding and unfolding states using a hinge unit, then portability is improved, but the screen cannot be extended beyond these two states
Solution Approach 1:
The flexible display unit is designed to roll dynamically along the rear plate during folding operations, enabling three distinct states: fully folded, partially folded, and fully unfolded. This dynamic rolling capability adds versatility to the screen configurations while maintaining portability through the hinge connection between first and second bodies.
Solution Approach 2:
The patent changes the operational parameters of the flexible display by introducing rolling motion in addition to folding. This allows the display to achieve multiple screen sizes and configurations (phone mode, note mode, tablet mode) by varying the degree of rolling and folding, thereby enhancing adaptability while preserving portability.
3Adaptability or versatility
If a flexible display unit is made transformable by external force, then multiple screen states are achieved, but reverse folding may occur causing user inconvenience
Solution Approach 1:
The rear plate is designed with specific structural features that provide preliminary resistance against reverse folding. The rolling mechanism incorporates elements that prevent the flexible display from folding in the opposite direction, ensuring smooth unidirectional operation and preventing user inconvenience while maintaining multiple screen states.
Solution Approach 2:
The rear plate acts as an intermediary between the flexible display unit and the external environment. It mediates the folding and rolling operations by providing a controlled interface that enables smooth transitions between states while preventing unwanted reverse folding, thus ensuring operational smoothness and user convenience.
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 three screen size modes (folding, unfolding, and extending) in a compact space, providing smooth operation and preventing unnecessary load on the display unit, enhancing user experience with versatile usage as a phone, note, or tablet.
Implementation Method 1
another side where a flexible display unit is rolled. The flexible display unit may be supported by a rear plate, and may have a structure to be transformable together with the rear plate.
Implementation Method 2
a second body connected to the first body so as to be relatively rotatable
Data Source
AI summary
A flexible display device including a first body; a second body; a flexible display unit arranged on a front surface of the first and second bodies; and a rear plate coupled to a rear surface of the flexible display unit, and configured to be transformed together with the flexible display unit. Further, in a folded state of the flexible display unit, the second body covers a rear surface of the first body, a first part of the rear plate is wound around a bearing portion in the first body together with a first part of the flexible display unit, and a second part of the rear plate is coupled to a second part of the flexible display unit exposed to the outside; in an unfolded state of the flexible display unit, the first body and the second body are arranged in parallel; and in an extending state of the flexible display unit from the unfolded state, the first body is extended and the first part of the rear plate is unwound from the bearing portion together with the flexible display unit to increase an exposed region of the flexible display unit.