
Hospitals. Suitable for treatment and consultation rooms that require privacy. Keep the glass clear for openness, then switch to opaque during treatment or consultation. Adapt the room by changing the glass state instead of using curtains or blinds.
Discover ERUMI window films
for the purpose of your space.
Explore applications, performance and supporting materials by product.
For homes and offices where daylight and heat gain both matter
View product details →For reducing heat gain in homes, cafés and offices with large windows
View product details →For large glass areas in public institutions, offices and similar spaces
View product details →For factories and logistics facilities where cost and purpose both matter
View product details →For switching daylight and privacy in glazed meeting and consultation spaces
View product details →For display cases, commercial refrigerators and other glass with fog-obscured views
View product details →For observation decks, glass railings and transparent noise barriers where bird collisions are a concern
View product details →For financial institutions, shops, schools and gyms needing glass safety measures
View product details →ERUMI KOREA SMART PDLC electrically switches glass between clear and opaque states. Screen outside views when privacy is needed, or choose clear glass for openness and a bright, comfortable environment. A smart-window solution for homes, offices, meeting rooms and medical facilities.

Screen views when needed, or keep the glass clear for openness. Explore how one switch changes the space.

Opaque · A private space screened from outside views
Switches to an opaque state to screen outside views.
Easily switch between clear and opaque states with an electrical signal.
Choose openness or privacy without separate curtains.
Open the view when clear, and screen views into the room when opaque.

PDLC · Opaque state
Make the glass opaque to screen outside views.

PDLC · Opaque state
When indoor lights reveal the room after dark, screen outside views for a more comfortable evening.

Open state
Smart-window technology for electrically switching between transparency and privacy. PDLC (Polymer Dispersed Liquid Crystal) uses polymer-dispersed liquid crystal technology. Power ON makes the glass clear; OFF makes it opaque to screen outside views. ERUMI SMART PDLC offers openness or privacy without separate curtains or blinds.
Smart technology for electrically switching transparency and privacy. SMART PDLC places a special liquid crystal layer between two transparent conductive layers. Power ON aligns the particles and clears the glass; OFF scatters light and makes it opaque. Choose openness or privacy without separate curtains or blinds.

Power ON
With power on, the liquid crystal (LC) particles align. Light passes through the film, making the glass clear and opening the view beyond.

Power OFF
With power off, the liquid crystal (LC) particles scatter light in different directions. The glass becomes opaque, screening outside views and protecting indoor privacy.
| Performance / Product | Normal PDLC |
|---|---|
| Type | Normal PDLC |
| Color | White |
| VLTParallel visible light transmission · ON (%) | 77 |
| VLTParallel visible light transmission · OFF (%) | 1 |
| Haze · ON (%) | 3 |
| Haze · OFF (%) | 98 |
| UVRUV rejection (%) | ≥99 |
| Solar transmittance · ON (%) | 67 |
| Solar transmittance · OFF (%) | 21 |
| IRInfrared rejection (%) | ≤42 |
| Operating voltage (V) | ≤65 |
| Response time · ON → OFF | ≤1s |
| Response time · OFF → ON | ≤1s |
| Power consumption (W/m²) | ≤5 |
| Roll width (mm) | ≤1,500 |
| Length | No limit |
Introducing ERUMI smart film