High-alumina screen protectors provide several significant advantages over other options like soda-lime glass screen protectors. They are far more durable, offering greater resistance to cracking or shattering under stress. Even if they do break, moreover, high-alumina glass offers better light transmission, resulting in a clearer and more vibrant display.
Performance Comparison
| Property | Soda-Lime Glass | High-Alumina Glass |
|---|---|---|
| Hardness (Mohs) | 5-6 | 6-7 |
| Thermal Expansion | ~9×10⁻⁶/°C | ~4×10⁻⁶/°C |
| Impact Resistance | Low | 3-5× Higher |
Key advantages of high-alumina screen protectors include:
Increased Durability:
The addition of alumina enhances the hardness of the material, making it more resistant to scratches and damage than regular glass or plastic protectors.
Better Impact Resistance:
High-alumina protectors are better at absorbing and dispersing impact, helping to prevent cracks or damage from drops or other accidents.
Improved Clarity and Touch Sensitivity:
These protectors maintain or even improve screen clarity and responsiveness, offering a smoother and more transparent touch experience.
Enhanced Heat Resistance:
The properties of alumina allow these protectors to handle higher temperatures better, making them more suitable for use in varying environmental conditions.
Oleophobic Coating:
Many high-alumina protectors feature an oleophobic coating that resists fingerprints and smudges, keeping the screen cleaner and more user-friendly.
Despite the high cost, with the development of flexible displays, new energy, and other fields, the modification and upgrading of high-alumina glass (such as ultra-thin and curved designs) will remain a key direction for screen protectors. Meanwhile, soda-lime glass will continue to dominate the basic application market due to its cost-effectiveness.
