Technology:
Toppan Forms developed a technology to print an electronic circuit directly on the
body of a smartphone. The technology prints an electronic circuit by spraying an
ink-like conductive metal. Because it can decrease the number of parts to be
incorporated in a smartphone, a smartphone can be smaller and thinner. At the
same time, because it allows for building an electronic circuit on an uneven
area and curved area, it can be utilized to develop a wearable terminal like
wrist watch and glasses. The company plans to put the technology into practical
use in 2015.
The printing technology developed by Toppan Forms will
allow a wearable terminal to be more sophisticated.
The
company applied the printed wiring technology to develop this technology. The allowable
temperature limit of polycarbonate resin that covers the smartphone body is 80
degrees centigrade. Toppan Forms successfully formed an electronic circuit
without exceeding 80 degrees centigrade. The new technology prints antenna
parts used to transmit and receive several radio waves on the smartphone body. Because
a smartphone incorporates 7-8 antenna parts at present, it will decrease the
number of parts and increase open area inside to increase the design freedom.
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