Camera Deco Structure for ESD Discharge in Electronic Devices
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Solution Overview
Problem
Static electricity introduced through metal decorations on electronic devices can cause camera modules to malfunction or break, and affect other modules within the device.
Innovation Solution
A camera deco part with specific metal portions having oxide coating layers and recesses in adhesive portions, allowing static electricity to be directed towards a discharge module without blocking the path to a printed circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If metal deco is used to cover the camera assembly, then aesthetic appearance and sophistication are improved, but static electricity can be introduced through the metal deco causing camera module malfunction or breakage
Solution Approach 1:
The patent applies local quality by creating different surface properties on the metal deco at different locations. The first surface has an oxide coating layer for aesthetic appearance, while the second surface has no oxide coating layer to allow static electricity conduction. This local differentiation resolves the contradiction by maintaining aesthetic appearance on the visible surface while enabling ESD protection function on the internal surface.
Solution Approach 2:
The patent introduces an intermediary element - the oxide coating layer - that selectively blocks or permits static electricity conduction based on location. The oxide coating on the first surface provides aesthetic appearance, while the absence of oxide coating on the second surface creates a conduction path for static electricity to reach the PCB, thus mediating between aesthetic requirements and ESD protection needs.
2Shape
If oxide coating layer is formed on metal deco surfaces, then aesthetic appearance and corrosion resistance are improved, but static electricity conduction path is blocked
Solution Approach 1:
The patent applies local quality by creating different surface properties on the metal deco at different locations. The first surface has an oxide coating layer for aesthetic appearance, while the second surface has no oxide coating layer to allow static electricity conduction. This local differentiation resolves the contradiction by maintaining aesthetic appearance on the visible surface while enabling ESD protection function on the internal surface.
3Strength
If adhesive portion is made continuous between metal portions, then structural strength is improved, but static electricity conduction path is blocked
Solution Approach 1:
The patent applies segmentation by dividing the adhesive portion into multiple separate adhesive regions instead of a continuous adhesive layer. The adhesive portions are positioned to join the metal deco to the PCB while leaving gaps that allow static electricity to conduct through the metal deco surfaces to the PCB. This segmentation resolves the contradiction by maintaining structural strength through adhesive bonding while preserving ESD conduction paths.
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
Effectively transfers static electricity away from the camera module to the printed circuit board, reducing the risk of damage to the camera and other modules.
Implementation Method 1
a first surface having an oxide coating layer formed thereon and a second surface having no oxide coating layer formed thereon
Implementation Method 2
the fourth surface facing the PCB... allowing static electricity to be directed towards a discharge module
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing including an opening, a printed circuit board (PCB) disposed inside the housing, and a camera deco part disposed inside the opening and covering a camera assembly. The camera deco part includes a first metal portion having a first surface at least partially exposed to an outside of the electronic device, the first surface including an oxide coating layer, and a second surface including no oxide coating layer, a second metal portion having a third surface at least partially exposed to an outside of the electronic device, the third surface including an oxide coating layer, and a fourth surface including no oxide coating layer, the fourth surface facing the PCB, and a first adhesive portion located between the second surface of the first metal portion and the fourth surface of the second metal portion, the first adhesive portion including at least one recess.