Full-Black Light-Blocking Film
High-opacity black PET/nonwoven substrate light-blocking film — opacity ≥99.9%, almost completely blocks light transmission. No light leakage, no overflow, precise custom die-cut bonding. Used for display module edges, camera and sensor light blocking, effectively improving imaging quality and display contrast.
Key Features
- Opacity ≥99.9%, almost fully black no transmission
- Black PET/nonwoven substrate, strong light block
- No light leakage, no overflow, thorough masking
- Precise custom die-cut bonding
Applications
Display module edge light blocking · Camera/sensor light blocking · Backlight border masking · Optical device leak prevention
Material Tags
Technical Parameters
| Substrate | Black PET / Nonwoven |
|---|---|
| Opacity | ≥ 99.9% |
| Thickness | 0.03–0.20 mm |
| Adhesive | Acrylic / Glue-free |
| Temperature | −20 ~ 120 °C |
| Feature | No light leakage / overflow |
| Processing | Class 1000 cleanroom die-cut |
Frequently Asked Questions about Full-Black Light-Blocking 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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