An electronic device that’s used as a very effective light source is known as led or LEDs. These diodes are accustomed to make up a video display which is known as LED display. LEDs are used in everyday devices which range from remote control to traffic lights. LED display can be used in store signs and billboards.

LED panels are used for illumination instead of displaying purposes. An LED panel consists of number of LEDs and an average LED display includes many LED panels. Surface mounted device (SMD) panel and conventional LED panel are the two classes of LED panels within the market. The traditional panel uses discrete LEDs which are used especially for display screens in large outdoors. Conventional panels tend to be more common compared to others and in this sort of panel, the cluster of LEDs of different color are grouped to form a square-shaped pixels useful for displaying.

The LED displays which are employed indoors make full use of SMD technology. SMD technology utilizes red, green and blue LEDs in panel which are themselves used to form lighting and illumination however, not for display. Pixels are formed mounted over circuit boards and chips. The pixels formed are smaller when compared to a pinhead. Therefore in SMD, the maximum viewing distance is decreased as well as there is slight decrease in the brightness. The both above mentioned featured make the SMD technology better for indoor applications.

The LEDs used to make up an LED display are one of the most important technologies of electronics. The light emitting diode offers several benefits over other light emitting sources. This diode is made from a semiconductor chip surrounded by the transparent plastic case. The plastic case allows the light to feed it. As positive and negative terminals of the diode is linked to the supply, the electrons starts following through the semiconductor due to its chemical nature. The collision of electrons emits energy by means of photons or light.
led display screen of different colors including infrared and ultraviolet light depends upon the semiconductor material found in the diode.

Nowadays, LEDs are preferred over traditional light sources due to many advantages over them. In traditional light sources a large amount of heat is produced and nearly 1 / 2 of energy is wasted by means of heat. Alternatively, LED consumes very less energy and incredibly less quantity of heat is produced in comparison with traditional light sources. They are the reasons for which the LEDs are employed in traffic lights and all the devices.

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