Seiko Epson today announced that it has developed a new inkjet technology that enables uniform deposition of OLED materials in large size displays. They believe that this is a major step towards 37" (or larger) HD OLED TVs.

Espon 14-inch Inkjet processed OLEDEspon 14-inch Inkjet processed OLED

Seiko Epson claim this is the first technology that can reliably form uniform organic materials on large substrates. The most widely used tech today, Vaccum Thermal Evaporation (VTE) is not able to do it because of several technical issues.

Epson has recently developed the long-awaited solution in the form of an OLED display fabrication process that leverages the company's proprietary Micro Piezo inkjet technology to achieve markedly greater accuracy in organic material deposition than the conventional technology. The process has been used in trial production to fabricate a highly uniform prototype panel. Extremely uniform layers (volume error < 1%) are achieved by precisely controlling the selection and ejection of multi-size droplets of ink material on a substrate so that only the required volume of material is deposited.

Epson will give more details at SID, together with a 14" prototype display (shown above), that has a HD resolution.