
Functional printing technology enables 3D printing of functional electronic objects with the use of substrates and inks. Printing techniques such as screen, gravure, inkjet, flexography, offset printing, nano-imprint lithography, micro-contact printing and aerosol jet printing are used for printing on a wide range of substrates with the use of functional inks. Screen printing technology is dominant in the field of functional printing owing to its high reliability and is widely used in production of sensors and radio frequency identification (RFID) antennas. Other applications of functional printing include production of organic light emitting diode (OLED) and liquid crystal displays, RFID chips or tags, sensors, batteries, lighting and photovoltaics. With the use of various substrates such as glass, plastic, polyethylene terephthalate (PET), polyethylene naphthalene (PEN), paper, gallium nitride (GAN) and silicon carbide, companies are able to experiment in the field of functional printing. In addition, with the use of various printing inks such as conductive silver and copper inks, dielectric inks and graphene inks, companies in the functional printing market are able to produce robust and reliable electronic devices.