Electronic Device Bonding Structure with Self-Restoring Corner Adhesive
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Solution Overview
Problem
Existing electronic devices face issues with reduced bonding strength and compromised waterproof and dustproof capabilities due to impacts, such as falling, which can cause cracks or peeling in the adhesive structures, especially at reduced mounting portions near corners.
Innovation Solution
A bonding structure is implemented using a combination of first and second adhesive materials, where the second adhesive material, in a liquid state, flows and cures to restore the bonding structure after impacts, and a hydrophilic and hydrophobic material distribution enhances the bonding area, particularly at corner portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display panel is mounted close to the corner portion of the housing or the corner portion is designed with a smooth structure, then the view region of the display is secured, but the mounting region for adhesive material is reduced, leading to decreased bonding strength
Solution Approach 1:
The patent applies different adhesive material distributions to different regions: corner portions receive adhesive material in both first and second directions to form enhanced bonding, while non-corner portions receive adhesive material only in the first direction. This local differentiation ensures maximum bonding strength at critical corner regions while maintaining overall assembly integrity.
2Reliability
If the tape or adhesive member constituting the bonding structure is subjected to concentrated impact, then the housing may be damaged, but the bonding structure may develop cracks or peeling, compromising waterproof and dustproof conditions
Solution Approach 1:
The patent pre-applies adhesive material in both directions at corner portions before assembly, creating a redundant bonding structure that can absorb and distribute impact forces. This preliminary reinforcement ensures that when impact occurs, the adhesive structure resists crack propagation and peeling, maintaining waterproof and dustproof integrity.
Solution Approach 2:
The patent uses a combination of adhesive materials applied in different directions (first direction and second direction) to create a composite bonding structure. This multi-directional adhesive configuration provides enhanced mechanical interlocking and distributes stress more effectively, improving impact resistance while maintaining sealing performance.
3Device complexity
If the amount of adhesive material is decreased due to reduced mounting portion, then the bonding structure becomes simpler, but the bonding strength between the front plate and mounting portion decreases
Solution Approach 1:
The patent implements a non-uniform adhesive distribution strategy where corner portions receive adhesive material in both first and second directions, while non-corner portions receive adhesive material only in the first direction. This localized enhancement at critical regions maintains high bonding strength without requiring excessive adhesive material throughout the entire mounting area, thus balancing simplicity and performance.
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 structure provides robust impact resistance and maintains waterproof and dustproof integrity by self-restoration of the adhesive layer, ensuring continued protection even after impacts.
Implementation Method 1
the second adhesive material, in a liquid state, flows and cures to restore the bonding structure after impacts
Implementation Method 2
a hydrophilic and hydrophobic material distribution enhances the bonding area, particularly at corner portions
Data Source
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AI summary
An electronic device is provided that includes a housing including a front plate facing a first direction, a rear plate facing a second direction opposite to the first direction, and a lateral member surrounding a space between the front plate and the rear plate and at least partially constructed of a metal material, wherein the front plate includes a first edge having a first length and extending in a third direction, a second edge having a second length longer than the first length and extending in a fourth direction orthogonal to the third direction, a third edge parallel to the first edge, having the first length, and extending in the third direction from the second edge, a fourth edge parallel to the second edge, having the second length, and extending in the fourth direction from the first edge, a first region in which the third edge and the fourth edge meet, and a second region in which the second edge and the third edge meet, a display viewable through the front plate, and an adhesive layer constructed in a closed-curve shape along the first edge, second edge, third edge, and fourth edge of the front plate, wherein, when viewed from above the display, a width of the adhesive layer in the first region and the second region is greater than a width of the adhesive layer outside the first region and the second region.