Light Emitting Diode (LED) Technology
These days, LED computer monitors are easily available for
all users. LED monitors stands for Light emitted diode that is created
in thin and flat designs. It is considered as a semiconductor light
source, which is used in numerous devices as indicator lamps. In 1962,
LED was initiated as an electronic component that emanated red light of
low-intensity. However, contemporary versions are enhanced with
ultraviolet, infrared and visible wavelengths that have high
intensities. When a light-emanating diode(LED) is frontward partial,
electrons are merged again with its holes and hence energy (photons) is
released.
History of Light Emitted Diode
In 1927, creation of LED was reported by the Russian
scientist Oleg Vladimirovich Losev. His research was initially
circulated in German, British and Russian scientific Journals, but for
several decades, this discovery was not used practically.
In 1955, infrared emission was reported by the Rubin Braunstein of the Radio Corporation of America from gallium arsenide (GaAs) and other semiconductor alloys like silicon-germanium (SiGe) alloys and indium phosphide (InP).
Later on, in 1962, Nick Holonyak Jr. developed visible-spectrum LED (red) as a first practical experiment and thus, Holonyak was considered as the "father of the LED".
In 1972, first yellow LED was invented by M.George Craford that has enhanced the brightness of red-orange and red LEDs.
In 1955, infrared emission was reported by the Rubin Braunstein of the Radio Corporation of America from gallium arsenide (GaAs) and other semiconductor alloys like silicon-germanium (SiGe) alloys and indium phosphide (InP).
Later on, in 1962, Nick Holonyak Jr. developed visible-spectrum LED (red) as a first practical experiment and thus, Holonyak was considered as the "father of the LED".
In 1972, first yellow LED was invented by M.George Craford that has enhanced the brightness of red-orange and red LEDs.
Use of LED
LEDs were commercially used as a surrogate for neon indicator
and incandescent lamps, in laboratory, electronics test equipment and
in seven-segment displays etc.
Advantages of LED
- Lesser energy consumption
- Improved robustness
- Longer Lifetime
- Compact size
- Greater consistency and durability
- Narrow bandwidth
- Quicker switching
Disadvantages of LED
- Quite expensive
- Requires particular kind of heat and current management
