Plasma Oleophobic Coating for Smartphone Tempered Glass

Plasma Oleophobic Coating Technical Parameters for Smartphone Tempered Glass

By G-Tel Glass Factory

Introduction

In the highly competitive smartphone accessories market, surface performance is a key differentiator for tempered glass screen protectors. At G-Tel Glass Factory, we apply advanced plasma oleophobic coating technology to enhance fingerprint resistance, touch smoothness, and long-term durability of smartphone tempered glass.

This article explains the technical parameters, performance standards, and process advantages of plasma oil-repellent coating used on smartphone tempered glass protectors.

What Is Plasma Oleophobic Coating on Tempered Glass?

Plasma oleophobic coating is a nano-scale surface treatment applied using low-temperature plasma technology in a vacuum environment. By depositing fluorinated polymer molecules onto the glass surface, the coating forms a uniform, ultra-thin oil-repellent layer that chemically bonds with the tempered glass.

Compared with traditional spray coating, plasma coating offers stronger adhesion, higher durability, and more consistent performance, making it ideal for premium smartphone screen protectors.

Plasma Oleophobic Coating Technical Parameters

1. Coating Process Specifications

• Coating Method: Low-temperature plasma deposition

• Process Type: Vacuum plasma polymerization

• Plasma Gas: Fluorocarbon-based gas (e.g. CF₄ / C₄F₈)

• Process Environment: High-vacuum plasma chamber

• Applicable Substrate: Chemically tempered smartphone glass (clear / AG / AR)

2. Coating Thickness & Uniformity

• Typical Coating Thickness: 5–20 nm

• Thickness Uniformity: ±10%

• Optical Impact: Fully transparent, no haze or color distortion

Ultra-thin nano coating ensures excellent surface performance without affecting display clarity or touch sensitivity.

3. Surface Performance Parameters

• Water Contact Angle: ≥ 115°

• Oil Contact Angle: ≥ 100°

• Surface Energy: ≤ 20 mN/m

• Friction Coefficient: ≤ 0.20

These parameters ensure a smooth finger glide and effective resistance to fingerprints, oil, and sweat.

4. Oleophobic & Hydrophobic Performance

• Strong fingerprint and oil resistance

• Sweat and skin oil repellent

• Easy-to-clean surface (oil stains removable with dry cloth)

• Reduced smudge visibility under light reflection

5. Durability & Wear Resistance

• Abrasion Resistance:
  ≥ 3,000–5,000 rubbing cycles (steel wool or abrasion test, 500g load)

• Chemical Resistance:
  Resistant to alcohol, weak acids, and mild alkaline solutions

• Environmental Stability:
  Stable performance under high humidity and temperature cycling

Plasma oleophobic coating significantly extends the service life of smartphone tempered glass protectors.

6. Adhesion & Reliability

• Coating Adhesion:
  Molecular-level bonding to glass surface, no peeling or delamination

• Cross-Cut Test:
  ISO 2409 Class 0–1

• Operating Temperature Range:
  −20°C to +70°C

Advantages of Plasma Oleophobic Coating by G-Tel Glass Factory

• Uniform nano-scale coating consistency

• Stronger adhesion than spray coating

• Longer anti-fingerprint lifespan

• Solvent-free, environmentally friendly process

• Suitable for high-end smartphone screen protectors

Quality Control & Testing Standards

At G-Tel Glass Factory, each plasma-coated tempered glass undergoes strict quality inspection:

• Water & oil contact angle testing

• Abrasion and wear-life testing

• Optical transmittance testing (≥ 92%)

• Touch smoothness and fingerprint resistance evaluation

Why Choose G-Tel Glass Factory?

With advanced plasma coating equipment, strict process control, and large-scale production capacity, G-Tel Glass Factory provides high-quality plasma oleophobic coated tempered glass for smartphone brands, wholesalers, and OEM/ODM partners worldwide.