Camera Window Bracket Recess for Adhesive Overflow Control
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Solution Overview
Problem
Adhesive members used to bond structures in electronic devices can overflow, affecting the slimness and appearance of the device, and reducing bonding strength when the bonding area is limited.
Innovation Solution
Incorporating a window bracket with a flange, boss, and stepped portion featuring a recess to accommodate adhesive material, ensuring strong bonding while minimizing the black matrix area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the stepped portion of the window bracket is spaced apart from the window to prevent adhesive overflow, then the appearance is improved, but the bonding area increases inward making it difficult to form an attractive appearance by expanding the black matrix area
Solution Approach 1:
The recess is formed in the inner surface of the stepped portion, creating a third-dimensional space that receives the adhesive material. This vertical dimension solution allows the adhesive to be contained without increasing the horizontal bonding area, thus maintaining the black matrix area while preventing adhesive overflow to the exterior.
Solution Approach 2:
The recess acts as an intermediary structure between the adhesive material and the exterior environment. It provides a designated space for the adhesive, preventing it from leaking outward while allowing the bonding area to remain compact and maintain the desired black matrix area.
2Shape
If the bonding area is reduced to maintain the black matrix area, then the appearance is improved, but the bonding strength between the window and the window bracket is weakened
Solution Approach 1:
The recess is strategically positioned in the inner surface of the stepped portion to provide localized adhesive containment. This allows the bonding area to be optimized for both appearance (maintaining black matrix area) and strength (providing sufficient adhesive bonding surface) by concentrating the adhesive in the recessed region.
3Strength
If adhesive material overflows to the outside, then the bonding strength is improved, but the appearance is deteriorated and surrounding structures are adversely affected
Solution Approach 1:
The recess converts the potentially harmful adhesive overflow into a beneficial feature by providing a designated space for the adhesive material. The adhesive that would otherwise leak and damage appearance is now contained within the recess, maintaining both bonding strength and aesthetic appearance.
Data Source
AI summary
An electronic device includes a housing, an optical module disposed in an inner space of the housing, and a window bracket disposed in the inner space of the housing and connected to an outside surface. The window bracket includes a flange including an opening disposed at a position corresponding to the optical module, a boss e surrounding an edge of the opening at a height from the flange, and a stepped portion provided along an edge of the boss and including a step surface and an inner surface extending perpendicularly from the step surface. A window is attached to the window bracket through an adhesive member disposed on the step surface, where the inner surface of the stepped portion includes a recess having a depth, where the recess is configured so the height from the step surface to a first point is greater than the thickness of the adhesive member.