OLED ( Organic Light Emitting Diode) displays are self-illuminating due to their organic material, so there's no need for a backlight to achieve maximum visibility in all environments. This allows less power consumption, better contrast, deeper blacks, more vibrant colors and for OLEDs to be significantly thinner than standard LCD modules with backlight. The OLED Layer Structure The main components of an OLED display are the cathode, anode, emissive layer, and the conductive layer. The anode and a cathode are between a glass top plate (seal) and a glass bottom plate (substrate). OLEDs use a technique known as electroluminescence, in which material emits light in response to the flow of electric current. When electric current is applied to the two conductors, the organic material produces a bright, electro-luminescent light. When energy passes from the negatively charged cathode layer to the anode layer, it stimulates the organic material sandwiched between them, w...