New printing structure for lighting single-pixel electroluminescent elements based on non-transparent microelectrodes

摘要

The conventional structure of printed electroluminescent (EL) panels mostly contains a transparent conductive materialon the light emitting top side. Regarding the relatively high costs for these materials and their deposition, a researchwas done on the feasibility of a new structure for printed ELs by segmentation of large EL areas to some smallerseparated ones. By screen-printing of microelectrodes in different patterns and line widths and gap sizes of 30 μm, 50 μmand 100 μm with conductive inks, and deposition of phosphor on the upper layer, the light is appearing between thelines.