PRODUCT
smart glass switchable
Brand Name: HOMEWELL
Product Name: Smart Film Switchable
Technique:Clear Glass, Tempered Glass, Smart Glass
Material:PDLC
Feature:self-adhesive
Thickness:0.44mm
Standard width:≤14cm/14-18cm
Working voltage:AC48V~65V/50Hz
Power consumption:≤5W/㎡
Lifetime:>80000h
| Brand | Homewell |
| Material | PDLC |
| Feature | self-adhesive |
| Function | privacy protection,heat insulation,explosion proof,decorative |
| Thickness | 0.45mm |
| Standard width | ≤14cm/14-18cm |
| Length | customize |
| Working voltage | AC48V~65V/50Hz |
| Power consumption | ≤5W/㎡ |
| Lifetime | >80000h |
1. Introduction: A Revolution in Transparency**
* Introduce the concept of dynamic light control and privacy.
* Define PDLC (Polymer Dispersed Liquid Crystal) film as a key technology for "smart glass".
* Brief overview of the advantages: dynamic control, privacy on demand, energy efficiency, modern design.
* Application range: from buildings and cars to healthcare facilities and home.
**2. What is PDLC Film? Basic Definition and Essence**
* Clarify: It is a multi-layer "sandwich" film installed *between* the panes of glass (usually DGU or triplex), rather than surface-bonded.
* Key property: Switching between **transparent** state (when energized) and **diffuse, cloudy/opaque** state (when not energized).
* Difference from SPD/Electrochromic: Faster switching, lower cost, better opacity in the "off" state, but no gradient dimming or full opacity.
**3. Disassembly of the Structure: Layer by Layer**
* **PET Base Films:** Thick, stable plastic layers (usually 2), providing mechanical strength. Special coatings for better strength and durability.
* **ITO (Indium Tin Oxide) Conductive Layers:** Applied on the PET layers. Transparent, but electrically conductive. Critical for applying an electric field.
* **PDLC Active Layer (Heart of the Technology):**
* Composition: Liquid crystal droplets dispersed evenly in a polymer matrix.
* Manufacturing process: Polymerizing emulsion (PIPS) or heat curing.
* Droplet size and distribution: Key to optical properties (opacity, transparency).
* **Adhesive Layer (OLA):** Special, optically transparent adhesive. Bonds the PDLC layer to the inner ITO/PET layer. Provides strong adhesion and durability.
* **Protective Separator Films:** Temporary coating, removed during installation.4. Principle of Operation: The Science Behind the Magic**
* **Stress-Free State (Off):**
* Liquid crystal molecules are randomly arranged.
* The refractive index of liquid crystals does not match that of the polymer.
* Result: Reliable light scattering in all directions - **opaque, opaque glass**. Privacy and glare reduction.
* **Powered State (On):**
* The applied electric field aligns the liquid crystal molecules parallel to the field.
* The refractive index of the liquid crystals (regular) now matches that of the polymer in the direction of light.
