About Nano Filter

Technique to reduce external light reflection, improve contrast, and extend color reproducibility by forming Filter layer of pigment on the whole surface of phosphor layer and applying optical filter effect that removes other colors besides those the filter layer radiates.

Currently, SDI applied Blue Filter of high efficiency to large size CPT

- Highly Pigmented phosphors
- 20% higher contrast than normal CRT
- Cost-Effective technologies
- Less expensive than filter screen