OLED introduction and basic OLED information

What is an OLED?

OLED (Organic Light Emitting Diodes) is a flat light emitting technology, made by placing a series of organic thin films between two conductors. When electrical current is applied, a bright light is emitted. OLEDs can be used to make displays and lighting. Because OLEDs emit light they do not require a backlight and so are thinner and more efficient than LCD displays(which do require a white backlight).

OLED prototype
LG Display 31-inch OLED prototype

OLEDs are not just thin and efficient – they can also be made flexible (even rollable) and transparent.

A flexible OLED display prototype
A flexible OLED display prototype


OLED displays have the following advantages over LCD displays:

  • Lower power consumption
  • Faster refresh rate and better contrast
  • Greater brightness – The screens are brighter, and have a fuller viewing angle
  • Exciting displays – new types of displays, that we do not have today, like ultra-thin, flexible or transparent displays
  • Better durability – OLEDs are very durable and can operate in a broader temperature range
  • Lighter weight – the screen can be made very thin, and can even be ‘printed’ on flexible surfaces

The future – flexible and transparent OLED displays

It turns out that because OLEDs are thin and simple – they can be used to create flexible and even transparent displays. This is pretty exciting as it opens up a whole world of possibilities:

  • Curved OLED displays, placed on non-flat surfaces
  • Wearable OLEDs
  • Transparent OLEDs embedded in windows
  • OLEDs in car windshields
  • New designs for lamps
  • And many more we cannot even imagine today…