Smartphone Coating Solution

PVD (Physical Vapor Deposition) optical coating equipment plays a broad and essential role in smartphones, primarily used to enhance screen display quality, improve camera performance, and upgrade both the appearance and durability of the device.

1. Screen Display Enhancement

• Anti-Reflective Coating (AR Coating):
  By depositing multilayer nanoscale films (such as SiO₂ and TiO₂) onto screen glass (e.g., Corning Gorilla Glass) using PVD, light reflection is reduced, outdoor readability is improved, and glare is minimized.

• Oleophobic and Hydrophobic Coating:
  PVD is used to deposit fluorinated materials (such as PTFE) to reduce fingerprint smudging and enhance touch smoothness.

2. Camera Module Optimization

• Lens Anti-Reflective Coating:
  Materials such as MgF₂ or SiO₂ are coated on the camera lens surface to reduce light loss (reflectivity can drop below 0.1%) and enhance image clarity—especially crucial for complex lens stacks like 7P lenses.

• IR Cut Filter:
  Alternating metal-dielectric layers (e.g., Ag/SiO₂) are deposited via PVD to precisely block infrared light (typically above 650 nm wavelength), preventing color distortion.

• Sensor Protective Coating:
  Protective films like Al₂O₃ or SiN₄ are applied to the surface of CMOS Image Sensors (CIS) to guard against dust and scratches while maintaining high optical transparency.