We have developed white-light-emitting OLEDs in 1993 for the first time. Since then, the performance of white OLEDs have been steadily improved and, today, they are considered to be the light source of the next generation. Today, high quantum efficiencies can be obtained by using phosphorescent emitters such as iridium complexes. We have synthesized a variety of wide gap, or high T1 level, materials for host and charge-transporting layers and succeeded to fabricate extremely high efficiency OLEDs. External QE of 25—30% was achieved for blue, green and red OLEDs, which correspond to the internal QE of nearly 100%. Long device lifetime at high luminance levels must be achieved for the lighting application. To this end, we have developed the multiphoton-emission (MPE) structures composed of multiple emissive units in tandem structures. For instance, a green phosphorescent MPE OLED exhibited an internal QE of 220%. Recently, we also developed MPE OLEDs having two emitting units by spin-coating. By combining the above techniques, OLEDs can be extremely efficient and possess extremely long lifetime. In 2010, Lumiotec Inc. has started small-scale production of white OLED panels in Yonezawa, and luminaires using their panels have been commercialized. In this talk, recent progress in white OLEDs will be discussed.