Definition

Switchable™ glass is a type of smart glazing that can instantly change from transparent to opaque when an electrical current is applied. It is commonly used to provide controllable privacy without the need for blinds, curtains, or physical partitions. When power is off, the glass appears frosted and prevents clear visibility. When power is applied, it becomes transparent and allows light to pass through.

In simple terms, Switchable™ glass is glass that can switch between clear and private on demand.

How Switchable™ Glass Works

Switchable™ glass uses PDLC (Polymer Dispersed Liquid Crystal) technology laminated between layers of glass. In its natural state, microscopic liquid crystals are randomly arranged, scattering light and creating an opaque appearance. When a low electrical current is applied, the crystals align in a uniform direction, allowing light to pass through and restoring transparency.

The transition happens instantly and can be controlled using a switch, remote control, sensor, or automated building system.

In simple terms, electrical power aligns microscopic liquid crystals, allowing the glass to change instantly between opaque and clear.

What Switchable™ Glass Does

Switchable™ glass allows users to control privacy while maintaining natural light. Instead of blocking light completely, the glass diffuses it evenly when opaque, helping maintain brightness within a space. It removes the need for mechanical shading systems and provides a clean, modern glazing solution.

Where Switchable™ Glass is Commonly Used

Switchable™ glass is used in environments where flexible privacy and clean design are important.

Typical applications include:

• Office meeting rooms and glass partitions
• Healthcare and clinical privacy areas
• Residential bathrooms and internal glazing
• Hotels and hospitality environments
• Retail and display settings
• Specialist or controlled-access spaces

Its ability to provide instant privacy without moving parts makes it suitable for modern architectural use.

Switchable™ Glass vs Smart Film

Switchable™ glass and smart film both use PDLC technology but differ in how they are applied. Switchable™ glass is manufactured as laminated glass with the PDLC layer sealed within the structure, providing durability and long-term performance. Smart film is typically applied to existing glass surfaces and is often used for retrofit applications.

Switchable™ glass is generally preferred for permanent installations and new glazing systems.

Learn More About Switchable™ Glass

For a full technical explanation, including detailed operation, performance, installation, lifespan, and specification guidance, see the Complete Guide to Switchable™ Glass.

You can also explore detailed technical answers and comparisons within the Your Questions Explained knowledge hub.

Frequently Asked Questions

Can Switchable™ glass be cut or modified after manufacture?
Switchable™ glass is typically manufactured to specification and cannot usually be cut or altered after production.

Does Switchable™ glass work instantly?
Yes. The transition between opaque and clear states occurs immediately when power is switched on or off.

Is Switchable™ glass always opaque when turned off?
Yes. In its unpowered state, the glass returns to a frosted, light-scattering appearance that provides privacy.

Can Switchable™ glass be used in large panels?
Yes. It can be manufactured in a range of sizes depending on project requirements and specification limits.

Does Switchable™ glass block all light?
No. When opaque, it diffuses light rather than blocking it completely, maintaining brightness within a space.