electronic fibers turn fabric into a touchscreen

Researchers at the National University of Singapore (NUS) have developed a touchscreen integrated directly into a garment using electronic fibers that combine light-emitting diodes (LEDs) and touch sensors. Led by Assistant Professor Tural Khudiyev, the team integrates 54 of these fibers into a sleeve to create a flexible display that shows images and video, responds to finger presses, and connects wirelessly to digital devices. The research introduces a textile interface that retains the breathability and flexibility of everyday clothing while withstanding machine washing.

Unlike conventional wearable technology, which typically attaches a screen or electronic device to the body, the NUS team’s approach builds display and touch functionality into the fibers themselves. Each thread contains interconnected microelectronic components within a structure just one millimeter thick, allowing the fabric to function as an interactive screen without a rigid display panel. The prototype measures 168 by 105 millimeters, refreshes at 30 frames per second, and retains nearly unchanged display and touch performance after 50 machine-washing cycles. The technology could eventually allow clothing to function as an interface for digital information, environmental sensing, and health monitoring.

how to turn a thread into a screen

Conventional electronic circuits are designed on flat surfaces, where components can be arranged and connected across two dimensions. A thread, by contrast, is narrow and cylindrical, leaving little room for the complex wiring needed to operate a display. In order to overcome this limitation, the researchers developed an interconnection architecture that allows thousands of microelectronic devices to be connected along a single fiber. The process begins with tiny, insulated wires. A laser exposes specific points along their surfaces, while controlled wetting directs molten solder to the designated locations, creating electrical connections without joining unintended areas. Using this method, the team integrated more than 5,000 chips through over 20,000 electrical connections.

The interconnected digital LEDs are then incorporated into a multilayer fiber using a thermal drawing process. The resulting thread measures approximately one millimeter in diameter and 10 meters in length, with separate layers responsible for displaying images and detecting touch. A touch-sensitive layer sits beneath the LEDs. When someone presses the fiber, the contact completes an electrical circuit, allowing the system to identify the location of the touch and illuminate the nearest pixel. Display and interaction therefore happen within the same thread, rather than through separate components attached to the fabric.

a device that behaves like fabric

For the prototype, the team threaded 54 pixel-bearing fibers into the forearm of a sleeve. Each fiber carries 96 LEDs, combining to form a 96-by-54-pixel display measuring 168 by 105 millimeters. The screen refreshes at 30 frames per second and supports 8-bit color depth. The display is still modest in resolution compared with a smartphone, but its capabilities extend beyond showing static images. It can play video, display photographs, run a calculator, and function as a compass. Users can also receive images over Bluetooth, interact through voice commands, and rotate the display or adjust its brightness automatically. The sleeve incorporates additional fibers that carry a microphone, a speaker, and sensors for movement, temperature, magnetic orientation, and ambient light. A temperature-sensing fiber positioned under the arm, for example, can measure body temperature and display the reading on the sleeve itself. Each pixel fiber also has its own control channel, meaning a fault in one line does not necessarily interrupt the others. The system can register multiple touches simultaneously, bringing it closer to the interactive behavior of a conventional touchscreen.

According to the researchers, the prototype retained nearly unchanged light output and touch response after 50 machine-washing cycles with detergent and 1,000 bends around a radius of five millimeters. The integrated display is also reported to be as breathable as cotton, polyester, and denim, while remaining within established skin-contact safety limits.

toward clothing that senses and responds

Healthcare is one potential application identified by the team. Fibers equipped with physiological sensors could collect information continuously and present it directly on a garment, allowing wearers to access measurements without consulting a separate device. Combined with artificial intelligence, the researchers suggest, such systems could eventually support personalized monitoring and feedback. That possibility remains a future direction rather than a demonstrated capability of the current prototype. The team’s next steps include improving resolution, integrating more sensing functions, and exploring on-device AI. The broader implication is a shift in how digital interfaces are designed. Smartphones and computers have accustomed us to accessing information through dedicated screens, while wearable technology has largely miniaturized existing devices or attached them to the body. The NUS research proposes a different relationship between electronics and everyday objects, one in which information can be displayed on the material already in contact with the wearer.

project info:

research team: Tural Khudiyev, Heng Fu, Ziang Li, and Swetika Chaturvedi
institution:College of Design and Engineering, National University of Singapore (NUS)
lead researcher: Asst Prof. Tural Khudiyev, Department of Materials Science and Engineering