Portable Device Display Adhesion and Magnetism for Crease Control
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Solution Overview
Problem
Conventional portable information devices with flexible displays face issues of creases and uplift in the folding area, leading to reduced external appearance and visibility due to inadequate adhesion and folding mechanisms.
Innovation Solution
A portable information device design featuring a weak adhesive section over the folding area and a magnet positioned below the display to attract a magnetic sheet-like member, allowing smooth folding while suppressing creases and uplift, thereby enhancing the external appearance and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If double-sided tape is used to adhere the display to the support plates, then the display is firmly fixed, but creases and uplift appear in the folding area during folding motion
Solution Approach 1:
The adhesive member has different adhesive forces in different regions: a first adhesive section with higher adhesive force for stable fixation, and a second adhesive section with lower adhesive force that allows smooth folding motion without creases or uplift
Solution Approach 2:
The adhesive member is divided into multiple sections with different adhesive properties: the first adhesive section for strong adhesion in non-folding areas, and the second adhesive section for weak adhesion in the folding area to prevent harmful effects during folding
2Ease of operation
If a non-adhesive area is provided in the folding portion, then folding motion is enabled, but the display and surroundings lift up from the support plates
Solution Approach 1:
Instead of a completely non-adhesive area, a second adhesive section with reduced adhesive force is used in the folding area, providing just enough adhesion to prevent uplift while allowing smooth folding motion
3Stability of the object's composition
If the adhesive force is increased to prevent uplift, then the display remains firmly attached, but folding motion becomes difficult and creases form
Solution Approach 1:
The adhesive member provides high adhesive force in the first adhesive section for stable attachment, while providing low adhesive force in the second adhesive section to enable smooth folding without creases or resistance
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 ensures a smooth folding motion and improved external appearance and visibility by reducing adhesive force in the folding area and using a magnet to attract the display, preventing creases and uplift when the device is in both operable and storage forms.
Implementation Method 1
The portable information device includes a magnet below the back surface of the display and in a position that overlaps with the folding area. The magnet can attract the magnetic body. As a result, creases or uplift in the folding area is suppressed
Data Source
AI summary
The portable information device includes: a display whose back surface is supported on respective front surfaces of first and second support plates; and an adhesive member that adheres to the front surfaces of the first and second support plates and the back surface of the display and fastens them together. In the portable information device, an area that overlaps with at least a folding area includes a weak adhesive section in which an adhesive force of the adhesive member between the first and second support plates and the display is reduced to be lower than the other section or a non-adhesive section that does not adhere to at least either the first and second support plates or the display. The portable information device further includes a magnet provided below the back surface of the display and in a position that overlaps with the folding area. The magnet can attract a magnetic body.