Organic light emitting diodes (OLEDs) are optoelectronic devices based on small molecules or polymers that emit light when an electric current flows through them. simple OLED consists of a fluorescent organic layer sandwiched between two metal electrodes.Under application of an electric field, electrons and holes are injected from the two electrodes into the organic layer, where? they meet and recombine to produce light. They have been developed for applications in flat panel displays that provide visual imagery that is easy to read, vibrant in colors and less consuming of power.????????
??????????????? OLEDs are light weight, durable, power efficient and ideal for portable applications. OLEDs have fewer process steps and also use both fewer and low-cost materials than LCD displays. OLEDs can replace the current technology in many applications due to following performance advantages over LCDs.
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