What is the full form of LED?
The LED full form is Light Emitting Diode. LED is a semiconductor device that emits light when energized by an electric current. When an electric current flows through an LED, electrons recombine with holes to emit light. LEDs allow current to flow in one direction and block it in the opposite direction.
Read Other Full Forms
The symbol for an LED resembles the symbol for a PN junction diode. As shown above, the difference between these two symbols is that the two arrows signify the diode generating light.
LED Symbol
Working Principle
Combining a type P semiconductor with a higher concentration of holes and a type N semiconductor with a higher concentration of electrons, light-emitting diodes are semiconductor light emitters. By applying the correct forward voltage at the PN junction, electrons and holes will recombine and release energy as light.
Types of LED
Listed below are the various varieties of LEDs created using semiconductors.
- Miniature LEDs
- Lighting LED
- Red Green Blue LEDs
- Flash LED
- High-Power LEDs
- Alphanumeric LED
Applications of LED
LEDs are utilized in numerous applications, such as warning systems, optical communications and security systems, robots, remote operations, etc. Due to its long-lasting capacity, low power requirements, short response time, and rapid switching characteristics, it is utilized in several of the following areas:
- Used in various displays
- Used in the dimming of light
- Used in the automotive industry
- Used in TV backlight.
