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Printed black internal conducting electrodes for flexible bistable cholesteric displays
Atkuri, H.M.,Lee, D.W.,Choi, B.O.,Kim, C.H.,West, J.L. The Korean Infomation Display Society 2011 Journal of information display Vol.12 No.2
We report flexible, bistable cholesteric displays utilizing polyester (PET) substrates with printed internal black electrodes. The black electrodes consist of carbon ink dispersed in butyl carbitol using a patented roll-to-roll gravure-offset printing. A transparent conducting polymer printed on PET serves as the counter electrode. The electro-optic material is a chiral nematic mixture dispersed in a low-concentration polymer binder. The device can be switched between scattering (black) and reflective (vibrant green) states upon application of an electric pulse. The internal black electrode enhances the contrast of the display and simplifies the roll-to-roll manufacture of flexible displays.
Preparation of ferroelectric nanoparticles for their use in liquid crystalline colloids
Atkuri, H,Cook, G,Evans, D R,Cheon, C-I,Glushchenko, A,Reshetnyak, V,Reznikov, Yu,West, J,Zhang, K Institute of Physics Publishing in association wit 2009 Journal of optics A, Pure and applied optics Vol.11 No.2
<P>In this paper we summarize our many years of experience in the preparation and optimization of stable colloids of ferroelectric nanoparticles dispersed in an isotropic carrier and in a liquid crystal host. The colloids are of interest for use in electro-optic devices, photorefractive hybrids and nonlinear optical elements. We also outline some of the most interesting features the nanoparticles bring to liquid crystals, along with the potential of these relatively new colloids.</P>
Printed black internal conducting electrodes for flexible bistable cholesteric displays
H. M. Atkuri,D.-W. Lee,B.-O. Choi,C.-H. Kim,J. L. West 한국정보디스플레이학회 2011 Journal of information display Vol.12 No.2
We report flexible, bistable cholesteric displays utilizing polyester (PET) substrates with printed internal black electrodes. The black electrodes consist of carbon ink dispersed in butyl carbitol using a patented roll-to-roll gravure-offset printing. A transparent conducting polymer printed on PET serves as the counter electrode. The electro-optic material is a chiral nematic mixture dispersed in a low-concentration polymer binder. The device can be switched between scattering (black)and reflective (vibrant green) states upon application of an electric pulse. The internal black electrode enhances the contrast of the display and simplifies the roll-to-roll manufacture of flexible displays.