Changes
/* Working of OLED'S */
#The battery or power supply of the device containing the OLED applies a voltage across the OLED.
#An electrical current flows from the cathode to the anode through the organic layers (an electrical current is a flow of electrons).
#At the boundary between the emissive and the conductive layers, electrons find electron holes.
# The OLED emits light.
# The color of the light depends on the type of organic molecule in the emissive layer. Manufacturers place several types of organic films on the same OLED to make color displays.