Saturday, April 28, 2012

LED Technology Background

By Domius Webb


Cathode Ray Tube technology died out in 2007, when it was outmoded by Liquid Crystal Display (LCD) technology. LCD technology work by layering the display using a sheet of liquid crystal followed by shooting white light by means of small filter-shutters at it. The white light originates from a source of cold cathode fluorescent lamps at the back of the TV and precise calibrations of the shutter-filters are utilized to establish the hue of the light received by the liquid crystal. The shutter-filters work in groups of three, one transferring the red portion of the light, a second passing the blue part of the light and the final transferring the green portion of the light (RGB). These three types of light are called sub-pixels, and when considered from a close vicinity, merge together into one color, depending on the mix proportions of each colored light let through, to create a pixel.

However, LCD screens do definitely have their own weaknesses. An example of this is that even when LCD televisions are in their powered down state, they still let a tiny amount of light to go through the shutters, which means their contrast ratio can never be greater than 1600:1

Light Emitting Diode (LED) technology greeted the marketplace not too long ago and erupted like crazy throughout the last several years with the advent of Organic Light Emitting Diode (OLED) technology. This system consists of filling the rear panel with RGB LEDs and then incorporating a rim of White LEDs around the edge, that act concurrently through a diffusion panel to light the display consistently and controllably.

So why might you want an LED TV?

LED televisions are the lightest and thinnest TVs that you can buy since the Light Emitting Diodes used to fabricate them are also the most compact available commercial light sources used to construct televisions. Some LED TVs are often as thin as just a few millimeters. Alongside this, the style for home design at the moment, as you may well know, is the simplistic, White, Glass, Bold Colors and Piano-finish Black look, which makes these sleek, slim and unique televisions excellent for houses in this day in age.

Furthermore, LCD televisions come with major limitations concerning viewing angle and glare, which often can especially be a issue in sizeable open plan rooms. On the other hand, LED TVs merge the LED technology with thick, top quality glass and anti-glare modern technology that minimizes this notably, allowing for a significantly superior viewing angle.

Green seems to be the word of the year, and for good rationale too! The polar ice caps are reduing and it is the duty of each industry to reduce the level of power and therefore non-renewable fuels their products are designed to consume. LED TVs were clearly fashioned with this under consideration and therefore are capable of exhaling a better and even more dazzling image than a LCD TV and with a small fraction of the energy.

Lastly, the next big thing across the world is 3D technology. The prospect of having animals, weather effects and actors/actresses appearing out of the TV into people's homes is driving the world crazy. Should you also like the very idea of this futuristic technology then a 3D LED HDTV is the ideal solution, offering a sleek design, lower power consumption, a vibrant and strong High definition image as well as, the most effective 3D technology on the market.

LED TVs are extremely dynamic on the subject of size and can vary from small-scale 21.5 inch monitors, all the way up to giant 70 inch displays. Even so, personally I feel that the perfect television for an typical sized home is a Samsung 55 inch LED TV.




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