Screen protectors, especially tempered glass ones, are commonly used to protect smartphone screens from scratches and impacts. However, many users also want their screens to stay clean and clear, without fingerprints. This is where the anti-fingerprint feature of a tempered glass protector becomes important. Let’s have a closer look at how this feature works and how to choose and care for a screen protector that resists fingerprints.
Key points of anti-fingerprint : Oleophobic Coating
The main reason for a screen protector’s anti-fingerprint ability is the oleophobic coating. This special coating is usually made from materials like fluoropolymers. Its primary function is to reduce the surface energy of the screen, making it harder for oils and water to stick to the surface. This helps in reducing fingerprints on the screen.
When you touch the screen, oils from your fingers try to leave marks on the surface. The oleophobic coating acts like a protective layer that prevents the oils from sticking to the glass. Instead, they form tiny droplets that are easy to wipe off, keeping your screen clean and smooth.
How the Oleophobic Coating affect Anti-fingerprint
The effectiveness of the oleophobic coating is based on surface energy control. The lower the surface energy, the harder it is for liquids, including oils, to spread across the surface. It's similar to how water forms droplets on a waxed car, rather than spreading out over the surface. Likewise, the coating on the screen prevents oils from spreading, reducing the appearance of fingerprints and keeping the screen clear.
Durability of the Coating
While the oleophobic coating helps keep fingerprints away, it is not permanent. With regular use, the coating gradually wears down, especially with frequent touching and cleaning. The effect typically lasts between 6 months to 2 years, depending on how often the phone is used and cleaned.
Not All Screen Protectors Have Anti-Fingerprint Features
It's important to note that not all screen protectors have an anti-fingerprint feature. Cheaper or lower-quality products may not include an oleophobic coating, making it easier for fingerprints to stick and harder to clean the screen. Always check the product description before buying.
How to Maintain an Anti-Fingerprint Screen Protector
To get the best anti-fingerprint performance, follow these tips:
Look for screen protectors labeled with "oleophobic coating" or "anti-fingerprint." High-quality brands usually offer more durable anti-fingerprint features.
Use a soft microfiber cloth to clean your screen. Avoid rough paper towels or pressing too hard, as this can damage the coating. Also, avoid using cleaning products with alcohol or harsh chemicals, as they can speed up the wear of the coating.
If you notice that fingerprints are becoming more visible and harder to clean, it’s time to replace your screen protector. The anti-fingerprint feature generally starts to weaken after 6 months to 2 years.
