Tempered Glass Screen Protector Gap Design
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Solution Overview
Problem
Existing screen protectors for portable electronic devices often result in watermarks or Newton rings due to the direct contact between the protective layer and the display screen, especially when pressed, as they lack a sufficient gap to prevent adhesion.
Innovation Solution
A screen protector design featuring a tempered glass with a substrate structure, protection structure, and adhesion structure, where the protection structure is thinner than the adhesion structure, creating a gap between the protective layer and the display screen to prevent direct contact and thus avoid watermarks or Newton rings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the protective layer is made thin to maintain clarity and flexibility, then the screen protector becomes more transparent and easier to install, but it cannot maintain a sufficient gap to prevent direct contact with the display screen, resulting in watermarks and Newton rings
Solution Approach 1:
The patent introduces a vertical dimension (height) to the protective layer structure, creating a stepped configuration where the protective layer extends higher at the edges than in the center. This dimensional change allows the protective layer to maintain thinness in the transparent area for clarity while providing sufficient height at the edges to prevent direct contact with the display screen, thereby eliminating watermarks and Newton rings.
Solution Approach 2:
The protective layer is designed with different thicknesses at different locations: thinner in the center transparent area for optimal clarity and flexibility, and thicker at the edges to maintain a gap and prevent adhesion to the display screen. This local variation in quality resolves the contradiction by optimizing each region for its specific function.
2Object-affected harmful factors
If the protective layer is made thick to prevent direct contact and avoid watermarks, then adhesion issues are reduced, but the screen protector becomes less transparent and more difficult to install
Solution Approach 1:
The patent uses a stepped or layered structure that varies in height, allowing the protective layer to be thin in the center for transparency and thick at the edges for preventing adhesion. This dimensional variation enables both requirements to be satisfied simultaneously without compromising either transparency or adhesion performance.
Solution Approach 2:
Different regions of the protective layer have different thicknesses optimized for their specific functions: the center area is thin to maintain transparency and flexibility, while the edge areas are thicker to prevent direct contact with the display screen and avoid adhesion issues.
3Ease of operation
If the protective layer is made flexible to ease installation, then the screen protector can conform to the display screen, but it cannot maintain a sufficient gap to prevent direct contact and adhesion
Solution Approach 1:
The patent introduces a vertical height dimension to the protective layer, creating a stepped structure where the edges extend higher than the center. This allows the protective layer to be flexible enough to conform to the display screen during installation while maintaining a sufficient gap at the edges to prevent direct contact and adhesion.
Solution Approach 2:
The protective layer has varying thickness across different regions: thinner in the center for flexibility and ease of installation, and thicker at the edges to maintain a gap and prevent adhesion to the display screen.
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 design effectively prevents watermarks and Newton rings by maintaining a gap between the protective layer and the display screen, ensuring clear visibility and durability without adhesion issues.
Implementation Method 1
a sticking layer positioned on at least a portion of the non-transparent layer and surrounding the transparent area
Data Source
Figure 1
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Figure 3
AI summary
A tempered glass screen protector (S) includes a substrate structure (1), a protection structure (2), and an adhesion structure (3). The substrate structure (1) has a transparent portion (11) and a non-planar decorative portion (12) extended from the transparent portion (11). The protection structure (2) includes a first transparent adhesive layer (21) disposed on the bottom surface (110) of the transparent portion (11) and a transparent protective layer (22) disposed on the first transparent adhesive layer (21). The adhesion structure (3) includes a first adhesive layer (31) disposed on the bottom surface (110) of the non-planar decorative portion (12), a base layer (32) disposed on the first adhesive layer (31), and a second adhesive layer (33) disposed on the base layer (32). The thickness (H1) of the protection structure (2) is smaller than the thickness (H2) of the adhesion structure (3), so that there is no any watermark or Newton ring formed between the transparent protective layer (22) and the display area (P2) of the portable electronic device (P) when pressing the transparent portion (11).