OLED Background

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OLED Components

An OLED consists of the following parts:

  • Substrate (clear plastic, glass, foil) - The substrate supports the OLED.
  • Anode (transparent) - The anode removes electrons (adds electron "holes") when a current flows through the device.
  • Organic layers - These layers are made of organic molecules or polymers.
    • Conducting layer - This layer is made of organic plastic molecules that transport "holes" from the anode. One conducting polymer used in OLEDs is polyaniline.
    • Emissive layer - This layer is made of organic plastic molecules (different ones from the conducting layer) that transport electrons from the cathode; this is where light is made. One polymer used in the emissive layer is polyfluorene.
  • Cathode (may or may not be transparent depending on the type of OLED) - The cathode injects electrons when a current flows through the device.source

To see details on working of OLED's click here

OLED Types

There are several types of OLEDs

  • Passive-matrix OLED
  • Active-matrix OLED
  • Transparent OLED
  • Top-emitting OLED
  • Bottom-emitting OLED
  • Foldable OLED
  • White OLED

For more details click here
To view details on OLED Advantages and Disadvantages click here