Flexible Printed Electronic Emissive Display Technology
Organic LED technology has progressed significantly in the last few years and its main markets are for television and mobile phone pixel display screens. However another technology is also picking up momentum as a potentially cheaper alternative – Non-organic phosphors.
Non-organic phosphors are driven using an indirect charge injection method rather than a direct (conventional circuit) connection. The phosphors are cheaper and made from simpler, more abundant materials. Moreover they are more resistant to environmental factors such as moisture that would hamper the performance on an OLED phosphor.
However, several challenges exist with non-organic phosphors. The first is a current lack of high performance red phosphor that will operate in the same conditions as its blue and green counterparts. The second is to improve emission efficiency to in turn reduce driving voltage required. This ultimately reduces the crosstalk interference produced.