OLED Display is short for organic LED display. With OLED technology, ultra-thin display elements with a very large colour gamut can be realized in the display industry. OLED display has been widely used in the mobile phone sector. In addition, the first commercial OLED TV has been introduced to the market. The OLED display now has a lifetime comparable to or better than LCDs through continuous development of materials. The lifetime of OLED display has exceeded 50,000 hours. Active matrix OLED offers the best display technology, which results in better picture quality. Their colour range equals or exceeds NTSC standards. The contrast ratios are from 1,000,000 to 2,000,000:1, which makes these colours look even more brilliant. Each video frame is crisp because OLEDs refresh in microseconds as opposed to LCDs’ milliseconds. Furthermore, there is no loss of contrast at off angles.