Foldable Display Movable Back Plate Gap Elimination
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Solution Overview
Problem
Portable information devices with foldable displays face issues of appearance degradation and potential malfunction due to gaps between the display and chassis, which can allow foreign matter and water entry, and may lead to display deformation or failure when folded.
Innovation Solution
A portable information device design featuring a movable back part and hinges that accommodate the display's movement during folding, ensuring it remains within the chassis and preventing deformation, while eliminating the need for a gap between the display and chassis, thus maintaining appearance and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display is made larger in size for use, then the display area is improved, but the device becomes bulkier when carrying
Solution Approach 1:
The display is nested within the chassis by folding it inside the foldable chassis, allowing a large display area to be contained within a compact device volume when closed, similar to how nested dolls provide multiple levels of storage space
2Adaptability or versatility
If the display and chassis are not fixed in position to accommodate perimeter difference during folding, then the folding flexibility is improved, but the appearance deteriorates and gaps are created
Solution Approach 1:
The back part is designed to move dynamically during folding, changing its position from the open ends toward the back part of the chassis, allowing the system to adapt to the perimeter difference while maintaining a clean appearance without gaps
3Ease of operation
If a gap is created between display and chassis for sliding during folding, then the folding movement is enabled, but foreign matters or water may enter the gap
Solution Approach 1:
The movable back part acts as an intermediary element that enables the necessary sliding movement during folding while preventing direct exposure of gaps to the external environment, thereby blocking foreign matters and water from entering
4Adaptability or versatility
If the display is allowed to extend out from the chassis during folding, then the perimeter difference is accommodated, but the quality of appearance deteriorates
Solution Approach 1:
The back part dynamically adjusts its position during folding, moving from the open ends toward the back part of the chassis, enabling the display to be accommodated within the chassis boundaries while maintaining a clean appearance without extension or protrusion
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
The solution allows for smooth folding of the display without deformation, preventing breakage and foreign matter entry, while maintaining the device's appearance and ensuring reliable operation.
Implementation Method 1
The movable hinge moves on the inner faces of the chassis in a direction from open ends of the chassis to the back part
Data Source
AI summary
A portable information device is provided. The portable information device includes a first chassis and a second chassis, a display, a back part and a movable back plate. The display, which is configured to be foldable in half, is disposed over inner faces of the first and second chassis. The back part, includes a movable hinge configured to join the first and second chassis rotatably. When the first and second chassis are folded towards each other, the movable hinge moves on the inner faces of the chassis in a direction from open ends of the chassis to the back part that is located on an opposite side of the open ends. The movable back plate configured to support a rear face of the display at a part corresponding to the back part. When the first and second chassis are folded towards each other, the movable back plate moves in a direction from the open ends to the back part together with the movable hinge.