Light-emitting diode
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A light-emitting diode is an electronic component that uses a semiconductor to emit light when current flows through it. Electrons in the semiconductor recombine with electron holes, thereby releasing
Blue, green, and red LEDs in 5 mm diffused cases. There are many different variants of LEDs.
A bulb-shaped retrofit LED lamp with aluminum heat sink, a light diffusing dome and E27 screw base, using a built-in power supply working on mains voltage
Blue LEDs
An RGB LED projecting red, green, and blue onto a surface
OLED
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An organic light-emitting diode, also known as organic electroluminescent diode, is a type of light-emitting diode in which the emissive electroluminescent layer is an organic compound film that emits
Light-emitting diode
…these LEDs offer lower operating voltages and a wider range of color temperatures than conventional white LEDs. In an organic light-emitting diode (OLED), the electroluminescent material composing the emissive layer of the diode is an organic compound. The organic material is electrically conductive due…
Prototype OLED panels
Transparent 55" OLED screen
Light-emitting polymer (LEP) display showing partial failure
An old OLED display showing wear