PDLC · Power ON
Clear glass, normal visibility
The liquid crystals align with the electric field so light passes straight through. White transmits 88% of light, so you can see through it like ordinary glass.
Smart Film · PDLC and PNLC switchable film
Smart Film turns clear glass frosted at the touch of a button
Meeting rooms that go from open to private in a fraction of a second. Installs directly onto your existing glass, with no glass replacement or curtains needed. Installed by the Energy Shield team, who have completed Smart Film projects for offices, universities and design studios.
- Switch instantly between clear and frosted by switch, remote or mobile app
- Fits existing flat and curved glass
- 3 colours: White · Grey · Black · 2-year warranty
Smart Film for existing glass
White · Grey · Black
- UV rejection
- 99%
- Power use
- <5W
- To clear
- ≤10ms
88%Light transmission, clear mode (White)
>98%Haze, frosted mode
99%UV rejection
<5 WPower use per sq m
80,000Service life (White/Grey)
How it works
How does Smart Film work?
The film has a liquid crystal layer between two ITO conductive films. Switching the power on or off changes how the crystals align, so the glass turns from clear to frosted instantly.
PDLC · Power OFF
Frosted glass, instant privacy
The liquid crystals scatter and refract light in all directions, so you can't see inside, but light still gets through (White still transmits 69% when frosted). The room stays bright, and the glass can be used as a projection screen.
Fits existing glass
Self-adhesive film that applies to your existing glass, including glass walls, doors and curved glass, with no need to replace the glass.
Multiple control options
Switch, remote, mobile app, WiFi, voice control or light sensor, depending on how you use the space.
Use as a projection screen
Frosted mode takes images from a rear projector, so the glass can serve as a meeting room screen or shopfront advertising display.
Choose your Smart Film system
Two Smart Film systems: PDLC and PNLC
Both systems switch glass between clear and frosted with electricity. The difference is the default state with no power, so choose by whether the space should be clear or private most of the time.
Available now
PDLC · Polymer Dispersed Liquid Crystal
No power = frosted · Power on = clear
The widely used standard system. Liquid crystal droplets are dispersed in a polymer, so the glass stays frosted and private until switched on.
- Uses power only while the glass is clear
- In a power cut or when switched off, the glass returns to frosted, so privacy is kept
- Available in White · Grey · Black (specs below), 2-year warranty
Best for Bathroom glass partitions (dry side only, not shower screens), exam rooms, clinics, meeting rooms and executive offices, where privacy comes first
New · samples arriving for testing
PNLC · Polymer Network Liquid Crystal
No power = clear · Power on = frosted
Works the opposite way to PDLC. Liquid crystal sits in a polymer network, so the glass is clear by default and frosts only when powered.
- Uses power only while frosted, so it saves energy where the glass is clear most of the time
- In a power cut or system fault, the glass stays clear and see-through
- Specs, colours and warranty will be announced after sample testing
Best for Shopfronts, showrooms, doors and corridors that must stay visible, and windows where the view comes first
| PDLC | PNLC | |
|---|---|---|
| No power | Frosted | Clear |
| Power on | Clear | Frosted |
| Uses power | When clear | When frosted |
| In a power cut | Frosted, private | Clear, see-through |
| Availability | Available now | Testing samples |
Interested in PNLC? Ask us or register for launch updates on LINE @esthailand
Colours and specs
PDLC Smart Film specs: 3 colours for the privacy you need
White
Clearest when powered (88% light transmission) and the room stays bright when frosted. Suits meeting rooms, clinics and partitions.
Grey
A premium grey tone with built-in glare reduction, available in Light Grey and Dark Grey. Suits executive offices and showrooms.
Black
The most opaque, with about 5% light transmission in frosted mode. Suits rooms that need darkness or a screen backdrop.
| White | Grey | Black | |
|---|---|---|---|
| Light transmission, clear mode | 88% | 45–60% | 10% |
| Light transmission, frosted mode | 69% | 34–49% | approx. 5% |
| Haze, frosted mode | >98% | >98% | >96% |
| Viewing angle, clear mode | >120° | >140° | >120° |
| UV rejection | 99% | 99% | ≥99% |
| Thickness | 540 µm | 560 µm | 560 µm |
| Service life | >80,000 hrs | >80,000 hrs | >10,000 hrs |
| Voltage | 48–65V AC (50/60Hz) via transformer | ||
| Power use | Less than 5 watts / sq m | ||
| Switching time | To clear ≤10 ms · To frosted ≤200 ms | ||
| Operating temperature | -20 to 80°C | ||
Data from HOHOFILM, an ISO 9001 and ISO 14001 certified Smart Film manufacturer, RoHS tested
Applications
Where Smart Film works best
- Meeting rooms / executive offices Open by default, frosted for confidential meetings, and you can project slides onto the glass
- Clinics / hospitals Exam rooms that need instant privacy, and easier to clean than curtains
- Showrooms / shops Screen the shopfront after hours or turn the glass into an advertising display
- Homes / condos / hotels Bathroom partitions (dry side, not shower screens), bedroom glass, open-plan glass partitions
- Banks / interview rooms Create private consultation areas without building solid walls
- Gyms / studios Open up to show off the atmosphere, or close off when you need privacy
Real installations
Smart Film projects by the Energy Shield team
Photos from real 2026 projects: A49 Studio, Srinakharinwirot University (SWU), an accounting firm and an office building in the Khlong 16 area
FAQ
Smart Film FAQ
Can Smart Film be applied to existing glass?
Yes. Self-adhesive Smart Film can be applied to existing flat or curved glass, with no need to remove or replace the glass. Our team handles the wiring and transformer installation.
What happens to Smart Film in a power cut?
It depends on the system. PDLC turns frosted with no power, while PNLC stays clear. Choose by whether the space should stay private or visible in a power cut.
What is the difference between PDLC and PNLC?
PDLC is frosted with no power and clear when powered, best where privacy comes first. PNLC works the opposite way: clear with no power and frosted when powered, best where the glass is clear most of the time. PNLC samples are currently being imported for testing.
Does Smart Film use a lot of electricity?
It uses less than 5 watts per square metre in clear mode. 10 square metres of glass uses less power than a single LED light fitting.
What colours does Smart Film come in?
There are 3 main colours: White, Grey and Black. White lets through the most light; Black is the most opaque, suited to rooms that need darkness or use as a screen.
How is Smart Film controlled?
By switch, remote, mobile app, WiFi, voice command or light sensor, depending on the control kit you choose.
How long is the Smart Film warranty?
The film has a 2-year warranty. White and Grey have a service life of over 80,000 hours.
Can Smart Film be used in a bathroom?
Only on bathroom glass partitions, applied on the dry side away from direct water and steam. We do not recommend it for shower screens or glass that gets wet often, because the manufacturer has not confirmed that standard PDLC switchable film withstands high humidity. Our team checks the environment and electrical safety before installation.
Interested in heat rejection film for your home or building? See Energy Shield window film specs and pricing
Free of charge
Get a Smart Film quote and book a free site survey
Fill in a few details and our team will contact you to arrange a site survey, or send photos of your glass via LINE right away.
Tel
095-539-8265 · 083-623-5615
084-239-7928 · 080-549-1655
084-239-7928 · 080-549-1655
LINE Official
Email
Energyshield789@gmail.com
Address
Apichayapipat Co., Ltd. 3898-3900 Din Daeng Road, Din Daeng Subdistrict, Din Daeng District, Bangkok 10400