What is LED? | SAMSUNG LED TV| LG LED TV

What is LED? | Everything u need to know about LED | SAMSUNG LED TV | LG LED TV

Are you searching for the information about the display technology called LED(Light emitting diode),all you have to do is just go through the information given below you will get a clear cut  information about the LED technology. For your easy understanding the some information is structured as question and  answer type hope you can understand.

What Does LED Stand For?

LED stands for light-emitting diode.

A diode is an electrical device or component with two electrodes (an anode and a cathode) through which electricity flows - characteristically in only one direction (in through the anode and out through the cathode). Diodes are generally made from semi-conductive materials such as silicon or selenium - substances that conduct electricity in some circumstances and not in others (e.g. at certain voltages, current levels, or light intensities).

A light-emitting diode is a semiconductor device that emits visible light when an electrical current passes through it. It is essentially the opposite of a photovoltaic cell (a device that converts visible light into electrical current).

So how the led technology used in display?

There are three different LED technologies used. The most commonly used of the three is edge-lit LED, in which white LEDs are situated around the edge of the screen and a diffusion panel employed to illuminate the display evenly. Edge-lit LED displays can be very thin. Another type is dynamic RGB LED, which are placed behind the panel. RGB LEDs make it possible to target areas for dimming more precisely, which in turn leads to truer reproduction of blacks and whites. In the third type of display, full-array LED, LEDs are positioned behind the panel similarly to the way they are with RGB LED displays but there is no capacity for localized dimming.

What is the difference between edge led and direct led display?

·       Edge lit is where you put the backlight LEDs at the edge of the display and use light guides to channel the light to the rest of the screen.

           

·        Direct lit is where the LEDs are behind the panel. Providing the potential for greater contrast and brightness.

So my feelings on these two displays?

Edge lit is often harder to get right and you often end up with light bleeding in at the corners. You can see this in dark scenes when in a darkened room.

Direct lit gives you interesting contrast, sometimes the dual modulation (sometimes called Dynamic Contrast) goes wrong and you see flickering of the backlight which can be annoying.

What are the advantages?

1.     Can be powered from a portable battery pack or even a solar array.

2.     Can be integrated into a control system.

3.     Are small in size and resistant to vibration and shock.

4.     Have a very fast “on-time” (60 nsec vs 10 msec for an incandescent lamp).

5.     Have good color resolution and present low, or no, shock hazard.

Hope all you got the idea about LED TECHNOLOGY .In case of any other doubts please leave in the comment section.If u liked the blog please feel free to share 

THANK YOU visit again...