Camera Window Hole Patterning to Reduce Optical Reflection
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Solution Overview
Problem
Reflection phenomena in electronic apparatuses, particularly those with camera modules, affect the quality and reliability by interfering with the resolution due to differences in refractive indices when light passes through the window and camera module interface.
Innovation Solution
A concave-convex pattern is formed in the hole area of the window overlapping the electronic module, using an acid solution to etch the window, which reduces reflection and improves the camera module's resolution by altering the surface roughness and refractive index alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a flat window surface is used in the hole area, then the manufacturing process is simple, but reflection phenomenon occurs that interferes with camera resolution
Solution Approach 1:
The patent applies local quality by forming a concave-convex pattern only in the hole area of the window where it overlaps with the camera module, while the peripheral area remains flat. This localized modification reduces reflection in the critical imaging area without unnecessarily complicating the entire window structure.
Solution Approach 2:
The patent employs curvature by creating a concave-convex pattern with curved surfaces instead of a flat surface. The concave portions with rounded bottoms reduce reflection phenomenon through altered light path geometry, improving camera resolution while adding minimal structural complexity.
2Object-affected harmful factors
If the window thickness is reduced to minimize reflection, then reflection decreases, but the protective function and structural integrity are compromised
Solution Approach 1:
The patent applies local quality by concentrating the anti-reflection concave-convex pattern only in the hole area where the camera module is located, while maintaining a flat peripheral area. This allows the window to remain sufficiently thick for structural integrity and protection while reducing reflection only in the critical imaging region.
3Manufacturing precision
If a concave-convex pattern is formed in the hole area, then reflection is reduced and camera resolution improves, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies local quality by forming the concave-convex pattern only in the hole area of the window, not the entire surface. This localized approach reduces reflection in the critical camera area while minimizing the overall manufacturing complexity compared to treating the whole window surface.
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 concave-convex pattern effectively reduces reflection, enhancing the camera module's resolution and maintaining the electronic apparatus's reliability under various environmental conditions, including high temperatures and humidity.
Implementation Method 1
forming a concave-convex pattern by contacting an acid solution with the hole area
Data Source
AI summary
A method of manufacturing an electronic apparatus includes the steps of: providing an electronic panel defining a through hole; providing an electronic module having at least a portion thereof received in the through hole; providing a protective member having a first surface adjacent to the electronic panel, a hole area overlapping the through hole, a peripheral area surrounding the hole area, and a second surface facing the first surface and spaced apart from the electronic module, the providing of the protective member including: providing an unfinished protective member; attaching a film to the peripheral area; and forming a generally concave-convex pattern by contacting an acid solution with the hole area.