Rollable Display Guide Member Positioning
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Solution Overview
Problem
Conventional rollable display devices face challenges in maintaining a compact form factor and preventing the display unit from deviating from its designed position during winding and unwinding, while also providing an effective information display solution.
Innovation Solution
A rollable display device design featuring a display unit with a roller mechanism, a housing with a transparent window, and a guide member that includes extension parts and a magnetic support system to maintain the display unit's position and allow for different image areas to be displayed when wound or unwound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a rollable display device uses a flexible substrate to enable rolling, then the display device can be compact when wound, but the display unit may deviate from its designed position during winding and unwinding
Solution Approach 1:
A guide member is introduced as an intermediary component between the display unit and the housing. The guide member includes a guide surface that contacts the display unit and constrains its movement path, ensuring the display unit follows the intended trajectory during winding and unwinding operations, thereby preventing positional deviation.
Solution Approach 2:
The patent replaces complex mechanical constraint systems with a simpler magnetic field-based positioning system. A magnetic part is disposed on the guide member to generate a magnetic field that interacts with the support member containing ferromagnetic particles, providing passive positional guidance without complex mechanical linkages.
2Adaptability or versatility
If a transparent window is added to the housing to display information, then information display capability is improved, but the housing structure becomes more complex
Solution Approach 1:
The guide member is designed to serve multiple functions: it guides the display unit's movement, provides structural support for the transparent window, and houses the magnetic positioning system. By making the guide member multi-functional, the patent avoids adding separate components that would increase overall device complexity.
Solution Approach 2:
The transparent window is integrated into the guide member structure rather than being a separate component. The guide member includes a window portion that is transparent, allowing information to be displayed through the housing while maintaining the structural integrity and simplicity of the guide member itself.
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 device to maintain a compact form factor, prevent the display unit from deviating during operation, and provide information through the transparent window in both wound and unwound states, enhancing usability and aesthetics.
Implementation Method 1
a magnetic part provided in an area of the guide member and magnetically joined to the support member
Data Source
AI summary
A display device includes a display unit which displays an image, a roller to which an end of the display unit is fixed and which winds or unwinds the display unit by rotating, a housing which accommodates the display unit and the roller, and a guide member which is provided inside the housing and guides a movement of the display unit.