Diffuser Film
Diffuser film converts backlight point sources into uniform surface light via micron-scale scattering particles — eliminating brightness unevenness and lamp shadow. Controllable haze (80–95%), transmittance ≥85%, low yellowing and humidity-heat aging resistant. Core optical material for LCD backlight module uniform lighting.
Key Features
- Controllable haze 80–95%, uniform lighting
- Thickness 0.05–0.25mm, thin no added bulk
- Low yellowing, humidity-heat aging resistant, stable long-term
- Class 1000 cleanroom die-cut, controlled cleanliness
Applications
LCD backlight module · Industrial/medical display · Ads machine / Splicing screen · Automotive backlight
Material Tags
Technical Parameters
| Substrate | PET (polyester film) |
|---|---|
| Haze | 80–95% |
| Thickness | 0.05–0.25 mm |
| Transmittance | ≥ 85% |
| Temperature | −20 ~ 90 °C |
| Feature | Low yellowing, humidity-heat resistant |
| Processing | Class 1000 cleanroom die-cut |
Frequently Asked Questions about Diffuser Film
Common questions about die-cutting and material selection for this product
Diffuser Film vs AG Anti-Glare Film — What's the Difference?
Diffuser films scatter light internally to eliminate LED hot spots for uniform backlighting. AG anti-glare films reduce ambient reflections through surface micro-texture (matte finish). Often used together: diffuser on the backlight side for uniformity, AG film on the user side for glare reduction. Provide brightness, haze level, and application parameters when selecting.
Why does optical material die-cutting need a cleanroom?
Optical materials (diffuser, brightness enhancement, polarizer) are extremely sensitive to particle contamination — tiny particles cause bright spots, black spots, or uneven brightness. Therefore optical die-cutting must be in a Class 1000+ cleanroom with constant temp/humidity and positive pressure. LSIGHT operates a Class 1000 cleanroom meeting optical-grade requirements.
What are the key points for full-black light-blocking film die-cutting?
Full-black light-blocking film (black PET or black double-sided tape) prevents display light leakage. Key points: edges must not leak light (clean cut, no burrs, no micro-gaps); uniform thickness (±0.02 mm) for no gap after bonding; high dimensional accuracy (±0.05 mm) for precise alignment with the display area. Recommend cleanroom cutting with light-source inspection.
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