Adhesive Sheet Structure for Display Panel Reuse
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Solution Overview
Problem
Existing electronic devices face challenges in reducing size and thickness due to the use of frame-shaped holders for attaching display panels, and direct adhesive methods often result in separation of panels and reflection films, making reuse difficult.
Innovation Solution
An electronic device design featuring a display panel attached to a housing with a first adhesive sheet on the panel and a second adhesive sheet on both the panel and housing, where the first adhesion is weaker than the second, allowing for easy removal and reuse of the panel without breaking it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a frame-shaped holder is used to attach the display panel to the housing, then the display panel can be securely attached, but the size and thickness of the electronic device increase
Solution Approach 1:
The patent removes the frame-shaped holder from the attachment structure and directly affixes the display panel to the housing using adhesive tape, eliminating the unnecessary component that increased device thickness while maintaining secure attachment
Solution Approach 2:
The patent combines the functions of the holder and adhesive into a single direct bonding structure, where the adhesive tape simultaneously provides both the mechanical support previously given by the holder and the bonding function, thereby reducing overall structure thickness
2Volume of moving object
If the display panel is directly affixed to the housing via adhesive tape, then the size and thickness are reduced, but the panel portion and reflection film may separate when the panel is lifted
Solution Approach 1:
The patent divides the adhesive system into two separate adhesive tapes with different adhesion characteristics: one adhesive tape bonds the display panel to the housing with strong adhesion, while the other adhesive tape allows for controlled separation, preventing damage to the reflection film during panel removal
Solution Approach 2:
The patent applies different adhesion strengths at different locations in the attachment system, with the first adhesive tape providing strong bonding between the panel and housing, while the second adhesive tape provides weaker bonding that allows safe separation, creating localized quality differences to prevent film damage
3Reliability
If a frame-shaped holder is used for attachment, then the display panel can be securely mounted, but the number of components increases
Solution Approach 1:
The patent extracts and removes the frame-shaped holder from the attachment system, reducing the number of components while maintaining secure attachment through direct bonding of the display panel to the housing using adhesive tapes
Solution Approach 2:
The patent merges multiple functions (mechanical support, positioning, and bonding) into a single direct attachment structure using adhesive tapes, eliminating the need for separate holder components and simplifying the overall device structure
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 easy reuse of the display panel while reducing the size and thickness of the electronic device by minimizing the number of components and preventing panel breakage during removal.
Implementation Method 1
a first adhesive sheet affixed to a back surface of the display panel and a second adhesive sheet affixed to the first adhesive sheet and to the housing
Implementation Method 2
a first adhesion of the first adhesive sheet to the display panel is weaker than a second adhesion of the second adhesive sheet to the housing
Data Source
AI summary
An electronic device includes a first adhesive sheet affixed to a back surface of a display panel, and a second adhesive sheet affixed to the first adhesive sheet and to a housing. A first adhesion of the first adhesive sheet to the display panel is weaker than a second adhesion of the second adhesive sheet to the housing.