Tips On Purchasing A HD LED TV
The term LED TV is grossly misunderstood. It is often thought that it is the LED that produces the image in Led TV, whereas the truth is that the LEDs are used to backlit LCD in the TV which produce the image. LEDs are used in place of fluorescent light in a LCD TV.
First type of backlighting created from LED is called Edge lighting. Here, a series of LED based lights are fixed on the edges of the screen towards outer side. The light produced from these is dispersed on entire screen. One advantage of this configuration is that the TV can be very thin. The disadvantage is that the black levels are less deep and edge area appears brighter than centre area.
There is another type of lighting. In this system, many rows of LEDs are positioned at the back of the screen. These rows which can be controlled by the view enable some blocks to be switched off. This produces a unique effect. The black part of the images appears truly black and gives depth to the images. One characteristic of this system is that the panel is somewhat thick. s
LEDs are designed differently than standard fluorescent backlight system. Following differences arise with LED lit LCD TVs.
- Unlike some LCD backlit systems, no mercury is used.
- Color saturation is more balanced.
- Lower power consumption.
Incidentally true Led only TVs are seen only in stadiums or in large locations.
When you consider purchasing a LEDTV, do not go simply buy technical specification. It is very important that you see the TV in person and operate it . Personal choice plays a big role in selection of LED TVs .
New technologies are coming up at a fast space in a matter of consumer electronics. It was the time for LEDTVs till today. There are now new developments in this field and organic LEDs have made their appearance. These have the advantage of still lower power consumption. The OLEDs do not need a backlight. It is of course slow to be used on a commercial scale but holds great promise.
The OLED technology is used for small surface applications like digital cameras and mobile phones. At present, OLED TVs up to 20 inch screen only are available in limited quantities. However, 40 inch models have made their appearance in Trade shows only and should appear in the market only after a few years. LED TVs have their plus and minus points depending on the positioning of the LEDS. With a bit of research and knowledge of the functioning of HD LED TVs, you can certainly make a well informed decision.
It may be needless to mention that your choice should start from the HD model of TVs The HD or high definition model has a big edge over the standard TV .The picture clarity in HD TV is far superior in HD TV .The reason is that the scanning rate in HDTV is 720/1180 as against 480 in a standard TV .