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Advantages of OLED | disadvantages of OLED

This page covers advantages and disadvantages of OLED. It mentions OLED advantages or benefits and OLED disadvantages or drawbacks.

What is OLED?

OLED stands for Organic Light Emitting Diode. Solid state OLEDs are easier to fabricate and hence are replacing CRTs or LED displays due to flexibility.

They are thin-film organic semiconductor light emitting devices. As shown in the figure, it uses thin film of organic material sandwiched between two electrodes viz. anode and cathode.

OLED Structure, How OLED Works

OLED works on the same principle of electro-luminescence. Anode is transparent and made of indium tin oxide. Cathode is reflective and made of metal. When an external potential is applied across the electrodes, positive and negative charges are injected. These electrons and holes shift inside the material and re-combine to form excitons and consecutively emits photons.
Refer OLED tutorial >> covering OLED basics and types.

Benefits or advantages of OLED

Following are the benefits or advantages of OLED:
➨The OLEDs are flexible and hence it is very easy to manufacture OLED displays or other OLED devices such as mobile phones, cameras, wearable devices etc.
➨They use wide energy gap semiconductors and exhibit singlet and triplet exciton radiation phenomenon compare to LEDs and LCDs.
➨OLED consumes less power and are suitable for devices requiring less power consumption such as android phones, portable gaming consoles, media players, digital cameras etc.
➨It provides remarkable color fidelity, high efficiency and operational stability.
➨They are very thin and small in size and hence are light in weight.

Drawbacks or disadvantages of OLED

Following are the drawbacks or disadvantages of OLED:
➨Their lifetime is shorter compare to other display types. White,Red and Green OLED offer lifetime of about 5 to 25 years where as blue OLED offers about 1.6 years.
➨It is expensive compare to LCD.
➨It is susceptible to water and hence it can be easily damaged by water.
➨OLED screens are even worse compare to LCD when subjected to direct sunlight.
➨Overall luminance degradation.
➨Limited market availability.

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