The core technology of cover glass

The cover glass, it's technology lies in balancing hardness(scratch resistance), toughness(drop resistance) and optical clarity but remain cost effective for mass production.

1.Material & processes, the extermes performance to practical balance

To meet rising protection demands, cover glass materials and processes continue to evolve:

1.Material evolution: From soda lime and aluminosilicate to higher performance lithium aluminosilicaate(LAS) glass, plus premium microcrystalline glass and UTG for foldable screens.

2.Stengthening process: Chemical strengthening improves glass strength through ion exchange, create a compressive stress layer which resists tensile fractures. Advanced LAS glass now uses 2 steps strengthening for deeper compression and far greater drop resistance.

Sheet forming methods:

Overflow fusion: Yields superior surface quality and strength(like Corning Gorilla Glass), but at lower throughput and higher cost.

Float process: Enables high-volume, low-cost production; historically weaker in thinness and uniformity, but domestic producers are rapidly narrowing the gap.

Form & design: From flat 2D glass to contoured 2.5D and now 3D curved glass-the latter offers better ergonomics and visual appeal and now commands >70% penetration in premium smartphones.