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Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Sensors and Materials, Volume 33, Number 3(3) (2021)
Copyright(C) MYU K.K.
pp. 1103-1112
S&M2520 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2021.2951
Published: March 24, 2021

Development of Extremely Large Area Light-emitting-diode-embedded Fabric and Investigation of Its Mechanical Properties [PDF]

Seiichi Takamatsu, Takahiro Yamashita, and Toshihiro Itoh

(Received May 29, 2020; Accepted October 8, 2020)

Keywords: e-textile, flexible, large area, fabric, lighting

We have developed a meter-scale extremely large area LED-embedded soft fabric for three-dimensional complicated shapes such as furniture, tents, and ceilings by transforming the shape of a lighting fabric. The developed meter-scale large-area LED-embedded fabric was assembled by a process in which LED-mounted 5 × 20 mm pieces of printed circuit board (PCB) were first soldered to a 2-cm-wide ribbon with copper power lines, then the resultant ribbons were woven as wefts by using a 1.2-m-wide automatic weaving machine. Fabrication with automatic weaving can produce a large (1.2 m × 1.2 m), lightweight (0.224 kg/m2) LED lighting fabric. The mechanical flexural rigidity of the LED fabric was investigated by comparing it with conventional flexible PCBs. The resultant bending stiffness of the LED fabric was 7.92 × 10−5 Nm2/m, which is smaller than that of PCBs, allowing the fabric to be bent easily. The hysteresis width of the bending stiffness of the LED fabric was 8.03 × 10−3 Nm/m, which is larger than that of PCBs, meaning that the fabric can keep its shape under bending. Finally, we demonstrated the illumination of rooms and gardens using the LED-implemented fabric by installing it on ceilings and tents with three-dimensional complicated curved shapes.

Corresponding author: Seiichi Takamatsu


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Cite this article
Seiichi Takamatsu, Takahiro Yamashita, and Toshihiro Itoh, Development of Extremely Large Area Light-emitting-diode-embedded Fabric and Investigation of Its Mechanical Properties, Sens. Mater., Vol. 33, No. 3, 2021, p. 1103-1112.



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