5 October 2005 Gravure printing of transparent conducting ITO coatings for display applications
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Abstract
Transparent conducting coatings and patterns of ITO (indium tin oxide) were deposited by a direct gravure printing on PET foils using nanoparticle-based UV-curable inks. Solid areas with thicknesses ranging between 300 and >1000 nm were obtained by varying the ink composition (e.g. ITO content, solvents) and fundamental parameters of the printing plate such as the line density. The best ITO coating patterns showed a sheet resistance of 3 to 10 kΩ and a transmission of up to 88 % with a haze of less than 1 %. One of the most crucial steps during film formation is the drying of the wet film as it changes the rheology and polarity of the ink and in consequence decisively influences the film formation. Typical fields of application of the gravure-printed ITO patterned electrodes include smart windows, flexible displays and printed electronics.
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Joerg Puetz, Joerg Puetz, Sabine Heusing, Sabine Heusing, Marcos de Haro Moro, Marcos de Haro Moro, C. Mikael Ahlstedt, C. Mikael Ahlstedt, Michel A. Aegerter, Michel A. Aegerter, } "Gravure printing of transparent conducting ITO coatings for display applications", Proc. SPIE 5963, Advances in Optical Thin Films II, 59631E (5 October 2005); doi: 10.1117/12.625208; https://doi.org/10.1117/12.625208
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