What is an OLED?

Organic Light-Emitting Diode (OLED) Display Panel, or Organic Electroluminescence (OEL), possesses the new generation technologies that other flat displays that are hard to accomplish –brighter and clearer full colour images with more agile responding speed.

How does OLED emit light?

The basic structure of OLED is a sandwich formed with a thin and transparent semiconducting anode of Indium Tin Oxide (ITO) and a metal cathode on both sides of an organic substrate. The organic material comprises hole transmission layer (HTL), emitting layer (EL) and electronic transmission layer (ETL). When a proper voltage provided by the battery (low voltage property) is applied, holes injected in the anode and electric charges from the cathode meet and combine at the illuminating layer and excite electroluminescence; structure of the organic layer and design and choice of the anode and cathode are key factors to the light emitting efficiency of the OLED device.

Advantages

Bright, crisp images and video are easy to see from any angle owing to their unsurpassed contrast and luminance. OLED screens appear extraordinarily bright because of their unusually high contrast. Unlike LCDs, they have neither backlights nor chemical shutters that must open and close. Instead each pixel illuminates like a LED.

Clear, distinct images result from OLED displays’ lifelike colour reproduction, vibrancy, and brightness. Unlike LCDs, OLED screens dispense with intervening liquid crystal structures that limit colour vibrancy off-angle.

OLED pixels turn on and off as fast as any LED. Their independent action in an active OLED display produces fluid full-motion video. In fact, active displays can refresh at rates more than three times that required for standard video.