Companies strengthen collaboration in OLED development

Konica Minolta Technology Centre and Universal Display Corporation have strengthened their collaboration to incorporate Universal's PHOLED phosphorescent OLED technology into Konica's white OLED devices.

On 30 June, Konica announced that it had developed a white OLED with an efficiency of 64 lumens per watt " four times the efficiency of standard incandescent bulbs.

Universal's red and green PHOLEDs and materials have been used in conjunction with Konica's OLEDs, such as its own blue phosphorescent materials and multi-layer designs.

Konica is increasing its efforts to enable commercial manufacture of white OLED devices for backlights in displays and other lighting applications. These devices are anticipated to use all phosphorescent materials.

Universal's PHOLEDs are claimed to offer up to four times higher efficiency than conventional OLEDs.

Recently, Konica developed long-life blue phosphorescent materials based on its experience in molecular design and precise synthesis, which have been cultivated through developments in silver-halide photosensitive materials and dyes.

Incorporating the blue phosphorescent materials, Konica has developed a white OLED device having an organic layer structure with good efficiency and low driving voltage by applying thin functional multi-layer design to precisely control inter- and intra-layer interaction.