|
|
We developed and characterized a mechanically flexible and expandable display
with a conductive- polymer-coated Nylon fabric which offers a new class of
mechanical robustness on its pixels and electrodes. For mobile information
displays such as electronic papers, the mechanical stability to expansion and
the function to mechanically magnify the display area are very attractive. For
this purpose, we utilized helical-coiled structure of Nylon fabric as a substrate
and selectively coated an organic conductive polymer of
poly(3,4-ethylenedioxythiophene) (PEDOT):polystyrenesulfornate(PSS) on the fabric
for constructing the pixels and electrodes of displays. Since the PEDOT:PSS-coated
Nylon is capable of mechanically expanding its electric wiring not by stretching
the conductive film itself, but by changing pitch between coils, the fracture of
the electronic materials is prevented under large deformation. The deformation of
our structure reached the strain of 1.25 without large increase of the electric
resistance. In our developed process of PEDOT:PSS patterning, KMPR photoresist was
spontaneously penetrated into the defined area of Nylon. The photoresist was lifted
off after PEDOT:PSS was coated. Finally, the coloration of both the one pixel on
a 4-pixel-display and the cactus shape was demonstrated with their areas expanded
at the strain of 0.3.
References :
Seiichi Takamatsu, Kiyoshi Matsumoto, Isao Shimoyama,
gMechanically Flexible and Expandable Display with
Conductive-Polymer-Coated Nylon Fabric,h
The 21st IEEE International Conference on Micro Electro Mechanical Systems (MEMS '08), pp. 770-773, Tucson, Arizona, USA, January 13-17, 2008.
[Proceedings]
|