Toshiba Corp and Toshiba Lighting & Technology Corp exhibited a see-through OLED lighting panel and an OLED lighting panel supporting wireless power transmission at Lighting Fair 2013, from March 5 to 8, 2013, in Tokyo. 'Window lamp' that does not waste light In general, see-through OLED panels look transparent when they are off because transparent electrodes are used for both of their positive and negative electrodes. There are many OLED panels that become transparent when they are off. But Toshiba's see-through OLED panel has a d...