Cover Glass Planarization for Camera Resolution and Waterproofing
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Solution Overview
Problem
The curvature and surface roughness of cover glass in electronic devices can degrade the resolution of camera images, and drilling holes to address this issue compromises waterproofing and impact protection.
Innovation Solution
Applying a substantially transparent planarization material to at least one surface of the cover glass, which is then cured and detached, to improve optical flatness without creating holes, thus maintaining camera performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a hole is formed in the cover glass to prevent resolution degradation, then camera image quality is improved, but waterproof characteristics and impact protection are deteriorated
Solution Approach 1:
The patent applies local quality by treating only the specific region over the camera lens with planarization material, while leaving other regions of the cover glass unchanged. This localized treatment improves optical flatness precisely where needed for camera performance without compromising the overall integrity, waterproofing, and impact protection of the cover glass structure.
Solution Approach 2:
The planarization material acts as an intermediary substance between the curved cover glass surface and the camera lens. This intermediate layer compensates for surface irregularities and curvature effects, enabling high-resolution imaging while maintaining the complete integrity of the cover glass without requiring any holes or openings.
2Shape
If the cover glass has a curved surface to improve external aesthetic appearance, then device aesthetics are improved, but optical flatness and camera resolution are degraded
Solution Approach 1:
The patent maintains the overall curved aesthetic shape of the cover glass while applying local planarization treatment only in the camera region. This allows the device to retain its attractive curved exterior design while achieving the optical flatness necessary for high-resolution camera performance in the specific area over the lens.
Solution Approach 2:
The cover glass is effectively segmented into different functional zones: the majority of the surface maintains its curved aesthetic shape, while the specific region over the camera lens is planarized to achieve optical precision. This segmentation allows simultaneous satisfaction of aesthetic and functional requirements in different areas.
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
This method enhances the optical flatness of the cover glass, improving camera resolution while preserving the device's waterproofing and impact protection.
Implementation Method 1
pressing the liquid planarization material toward the cover glass by using a pressing plate
Implementation Method 2
curing the liquid planarization material
Data Source
AI summary
In an embodiment, a liquid planarization material is coated on at least one of a first surface and a second surface of the cover glass. The second surface faces a direction opposite the first surface. The liquid planarization material is pressed toward the cover glass by a pressing plate and cured. Then, the pressing plate is detached from the cured planarization material and the cover glass. Other embodiments are possible.