Japanese electronics giant Mitsubishi Electric displays a 155-inch sized organic light emitting diode (OLED) display, which consists of small sized OLED parts (estimated size is a 10x10cm square unit) at the Ceatec exhibition, Asia's largest electronics trade show in Chiba, suburban Tokyo on October 6, 2009. The large scale OLED display has been developed for digital signage and monitors placed at public spaces.