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Berlin, Germany
-- At the Internationale Funkausstellung (IFA) 2005, Philips is
demonstrating photonic textiles—fabrics that contain lighting
systems and can therefore serve as displays. With the development of
this new and unusual technology, Philips Research is pointing the
way toward a new age in the long history of textiles.
At first glance, objects such as clothing, towels, upholstery, and
drapes would seem unlikely places on which to place intelligent and
interactive systems. Yet these low-tech objects figure prominently
in our lives. By integrating flexible arrays of multicolored
light-emitting diodes (LEDs) into fabrics—and doing so without
compromising the softness of the cloth—Philips Research is bringing
these inert objects to life.
To meet the challenge of creating light-emitting cloth objects that
retain their softness, Philips Research and textile institute TITV
Greiz have developed an interconnecting substrate made entirely of
cloth. Researchers from Philips have also created flexible and
drapable substrates from plastics and films.
On these substrates, the researchers have placed passive matrices of
compact RGB LED packages. The pixelated luminaires with relatively
large distance between the RGB pixels have been embedded in such
everyday objects as cushions, backpacks, and floor mats. Since the
fabric material covering the miniature light sources naturally
diffuses light, each pixel seems bigger than it actually is. The
LEDs, therefore, remain small and unobtrusive, while the fabric
retains its soft look and feel.
Photonic textiles can also be made interactive. Philips has achieved
interactivity by incorporating sensors (such as orientation and
pressure sensors) and communication devices (such as Bluetooth, GSM)
into the fabric.
The results of these innovations are as various and promising as
they are novel. Photonic textiles open up a wide range of
applications in the fields of ambient lighting, communication, and
personal health care. Photonic textiles are still a young business.
Even at this early stage, however, Philips envisions partnerships
with interior and apparel brands that see the potential of photonic
textiles to revolutionize the very concept of fabric. The
demonstration at IFA is also meant to show the opportunities offered
by this technology and to gain customers’ and visitors’ feedback on
these options.
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An interconnecting, flexible substrate with a matrix of red,
green and blue LEDs is the fundamental building block of
application prototypes of photonic textiles.
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Applied in soft fabric, the light from the small pixels
diffuses, resulting in more or less continuous light-emitting
soft surface.
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