WebA Light Emitting Diode (LED) is a semiconductor device, which can emit light when an electric current passes through it. To do this, holes from p-type semiconductors recombine with electrons from n-type semiconductors to produce light. The wavelength of the light emitted depends on the bandgap of the semiconductor material. WebThe reason why an LED or LCD display is termed crystal UHD is that these display panels utilize heavily embedded LCD or LED on a panel. An increased number of LEDs result in an increased resolution. Since each LED makes up one pixel, putting each LED as close as possible would result in increased pixels on the same panel size.
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Crystal LED - Wikipedia
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