National University of Singapore touchscreen garment

Researchers at the National University of Singapore (NUS) have developed a world-first touchscreen integrated directly into a garment using specialized fibers that function as both pixels and touch sensors. The technology utilizes 54 such fibers to create a wearable interface that is flexible, breathable, and washable.

The system employs a programmable method using lasers and controlled surface wetting to bond molten solder to insulated wires, allowing for the integration of over 5,000 chips and 20,000 electrical connections. This enables the textile to display images or video and respond to finger presses to interact with wireless devices.

Findings published in the journal Nature indicate the prototype is highly durable, maintaining brightness and touch responsiveness after 50 machine wash cycles and 1,000 bends. The development offers potential for garments to act as interfaces for health monitoring and digital device control.

Technical specifications of the smart textile sleeve include 54 electronic fibers, each approximately 1 mm thick and up to 10 meters long, containing 96 light-emitting diodes (LEDs). This configuration creates a 96 × 54 pixel display capable of running a calculator, displaying photo galleries, functioning as a compass, and playing video at 30 frames per second. The fibers sense touch mechanically by completing a circuit when the fabric is pressed, triggering the nearest pixel.