Earlier in May, Panasonic Corp announced that it has developed a white OLED with the world's highest luminous efficiency of 114 lm/W. Improvements in the efficiency of this OLED device were due to  the company's focus on optimizing light extraction technology for an all-phosphorescent white OLED.  As a reminder, Panasonic Idemitsu OLED Lighting, a joint venture of Panasonic and Idemitsu, began volume production of OLED lighting panels in October 2012.  The partnership was established back in 2011,with an initial investment of $182 M...