Foldable Display Adhesive with Weak Section
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Solution Overview
Problem
Conventional portable information devices with foldable displays often suffer from creases and uplifts in the folding area, leading to reduced external appearance and visibility due to adhesive issues between the display and support plates.
Innovation Solution
A portable information device design featuring a weak adhesive section with reduced adhesive force in the folding area, allowing for smooth folding without interfering with the display's motion, and configured to detach from either the display or support plates during folding, thereby preventing creases and uplifts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the display is firmly adhered to the support plates using double-sided tape, then the display stability and external appearance quality are improved, but the folding motion is restricted and creases or uplifts occur in the folding area
Solution Approach 1:
The adhesive member is designed with different adhesive forces in different regions: the first adhesive section has high adhesive force for stable display attachment, while the second adhesive section has low adhesive force to allow folding motion. This local differentiation resolves the contradiction between display stability and folding ease.
Solution Approach 2:
The adhesive member is divided into multiple adhesive sections with different adhesive forces. The first adhesive section corresponds to the non-folding area and provides strong adhesion, while the second adhesive section corresponds to the folding area and provides weak adhesion, enabling smooth folding without creases or uplifts.
2Ease of operation
If a non-adhesive area is provided in the folding portion to allow folding motion, then the folding ease is improved, but creases or uplifts occur in the display, reducing external appearance quality and visibility
Solution Approach 1:
Instead of completely removing adhesive in the folding area, the invention applies adhesive with reduced adhesive force. This local quality differentiation allows folding motion while maintaining sufficient adhesion to prevent creases and uplifts, thus preserving display surface flatness and external appearance quality.
3Reliability
If the adhesive force is uniformly high across the entire adhesive member, then the display attachment reliability is improved, but the folding area experiences excessive adhesive resistance causing creases and uplifts
Solution Approach 1:
The adhesive member is designed with spatially varying adhesive force: high adhesive force in the first adhesive section for reliable display attachment, and low adhesive force in the second adhesive section to minimize folding resistance. This resolves the contradiction between attachment reliability and folding ease.
Solution Approach 2:
The adhesive member is segmented into multiple sections with different adhesive characteristics. The first adhesive section provides strong attachment reliability, while the second adhesive section reduces adhesive resistance during folding, eliminating harmful effects in the folding area.
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 enhances the external appearance and visibility of the display by preventing creases and uplifts during use and folding, ensuring a smooth folding mechanism and improved aesthetics.
Implementation Method 1
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 the first and second support plates and the display together
Data Source
AI summary
The portable information device includes: a first chassis member; a second chassis member relatively turnably (i.e., foldably) connected to the first chassis member; a first support plate fastened to the first chassis member; a second support plate that is fastened to the second chassis member and provided adjacent to the first support plate; a display whose back surface is supported by respective front surfaces of the 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. Furthermore, 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.