Samsung is a force in the improvement of flat panel HDTV sets; it is one of the premier brands available. Their newest sets include LED back-lighting , which replaces the cold-cathode fluorescent systems that were used in the first generation of LCD TVs. The use of this LED technology has made it possible for them to design sets that are thinner, and lighter than previous sets, but still produce substantially higher picture quality. The UN40D6420UFXZA Samsung 3D LED HDTV is a good example of this technical excellence.
Since an LCD (Liquid Crystal Display) can't produce any light, but instead acts like a shutter that varies the passage of light as it passes through the display, any LCD display requires a back-light to be visible under dim lighting conditions. The LCD aspect of the display simply functions as a "shutter" that either permits light to transmit through the display panel, or prevents it.
The first generation of LCD TV sets had the back-lighting provided by a set of cold-cathode fluorescent lights, which emit a white light. Every picture element, or “pixel that makes up a TV picture is tiny location on the display that has three tiny filters that will produce the primary TV colors: red, green, and blue (RGB). The color TV image is then created by adjusting the level oftransparency of the LCD element that controls the light passing through each of the filters in each pixels that constitute the entire image.
The UN40D6420UFXZA Samsung 3D LED HDTV set uses an "edge lighting" system to supply back-lighting for the picture. In this system, high intensity white-light LEDs (Light Emitting Diodes) are placed around the edge of the screen frame. A diffuser plate then distributes that light through the full face of the picture. The employment of the LED lighting frame means that the TV requires a lot less energy to operate. This Samsung set is quite efficient: based on a usage rate of 5 hours each day, and a cost of electricity of $0.11 per Kwh, it would cost about $14/year to operate this set. When the set is not running, it uses only 0.07 Watts of power. That amounts to 0.6 Kwh/yr, which would cost less than $0.07, based on the same power rates!
This UN40D6420UFXZA Samsung set is packed with what Samsung refers to as "Smart Apps" - applications that make up the basis of their "Smart TV" platform. These "Apps" allow you to use the TV to browse the internet, and to download content from the Web from providers like Pandora, Hulu, Netflix, and many others.
An additional aspect of this set is its "Allshare DLNA Technology". DLNA stands for "Digital Living Network Alliance". It represents an "interoperability protocol" that enables a variety of electronic devices to link together to allow file sharing and data transmission. Samsung's "Allshare" makes it easy to synch up your DLNA-enabled devices with this Samsung TV set, and that means that you can use all the media files that are on your computer, iPhone, and other devices on your HDTV set. Add the optional LinkStick, and you will be able to have wireless access as well.
This UN40D6420UFXZA Samsung TV also includes something called the ConnectShare Movie feature. This gives you the ability to play music, watch videos, or look at pictures from a USB Flash Drive. All you need do is to plug the drive into the USB port on the TV, and you are able to access the files.
The clarity of the images you will see on the UN40D6420UFXZA Samsung is increased by the Ultra Clear Panel which makes up the front of the screen. This panel absorbs the light that strikes it, which almost totally eliminates those annoying reflections that could likely appear on the front of thescreen. This then provides you with a picture that has deeper blacks and better contrast, providing a cleaner, crisper image with great shadow detail.
Getting this TV will substantially your television viewing experience, as well as making it easy to interface with all of your other media files, for example your computer, your other personal devices, and the Internet.
You can Look into all the details regarding the UN40D6420UFXZA Samsung LED 3D HDTV by following that link, and get to know how well this set will work for you.