Samsung is a leader in the development of HDTV flat panel technology. Their newest sets feature the use of LED back-lighting. This is a replacement for the fluorescent lighting system that was used previously to back-light LCD TV sets. Using LED technology has enabled Samsung to create HDTV sets that are much thinner and lighter than earlier sets, and also to produce substantially higher picture quality. Samsung’s UN40D6420UFXZA 3D LED HDTV is a good example of these sets.
An LCD (Liquid Crystal Display) doesn’t produce light, but instead acts as a shutter that controls the transmission of light through the liquid crystal display. All LCD displays must have a back-lighting source to be seen in dim lighting conditions. The liquid crystals act as a “shutter” that will allow light to pass through the display, or will block it. Think of it as a tiny venetian blind: if the crystals in an LCD cell are aligned perpendicular to the plane of the screen, light will pass through the display cell. If the crystals are parallel to the plane of the display, the light will be blocked, and the cell will appear dark.
While an LCD display can be seen in bright light (for example, a digital watch or clock face), in order to be seen in dim lighting conditions there must be a light source behind the LCD display screen that provides illumination, in other words, a back-lighting system. The first LCD TV sets were back-lit by a fluorescent tubes, which provide white light. Each picture element or”pixel”, that is used to create a TV picture is small spot in the display that contains three microscopic filters that provide the primary TV colors: red, green, and blue (the familiar RGB you’ve seen in TV specs).
A color TV picture is created by controlling the level of transparency for each LCD element controlling the light passing through each of the color filters, in every one of the pixels that create up the entire picture. For an HDTV picture, there are typically 1,080 horizontal lines of pixels, each of which has 1920 pixels – a total of over 2,000,000 pixels that create each picture, or frame of a TV broadcast. Each of these three filters, is controlled individually to control the color that creates each pixel, for each frame of a TV picture. The picture on an HDTV screen refreshes at a rates of either 120 Hz, or 240 Hz (120 to 240 times per second) depending on the model.
The Samsung UN40D6420UFXZA LED 3D HDTV set uses an “edge lighting” system to provide the back-light for its picture. In this system, very bright white-light LEDs (Light Emitting Diodes) are placed around the edge of the screen frame. A diffuser plate then distributes this light through the entire face of the display. The use of an LED lighting system means that the TV requires much less energy to operate. This set is extremely efficient: based on a usage rate of five hours per day, and an electricity rate of $0.11 per Kwh, it would cost about $14/year to operate this set. When the set is turned off, it consumes just 0.07 Watts of power. That amounts to 0.6 Kwh/yr, which would cost less than $0.07 based on the same electric rates – no “electricity vampire” here!
The UN40D6420UFXZA Samsung set includes Samsung’s “Smart Apps” - the applications that create their “Smart TV” platform. These “Apps” make it possible for you to use your TV to interface with the Internet, and to bring in Web content from providers like Pandora, Netflix, Hulu Plus, and others.
An additional feature of this set is its “Allshare DLNA Technology”. DLNA is an abbreviation that stands for “Digital Living Network Alliance”. It represents an “interoperability protocol” that enables various electronic products to be linked with each other to allow file sharing and data communication. Samsung’s “Allshare” renders it a cinch to link your DLNA-enabled devices with this Samsung TV set, which allows you to use the various media files on your pc, iPhone, along with other components with your HDTV set. Add to that the optional LinkStick, and you will be able to enjoy wi-fi accessibility in addition.
This UN40D6420UFXZA Samsung TV also has the ConnectShare Movie feature. This gives you the ability to look at pictures, watch videos, or play music by using any USB Flash Drive. All that you need to do is to plug the drive directly into the USB slot within the set, and you will be able to access the files.
The clarity belonging to the picture a person will see from the UN40D6420UFXZA Samsung is increased because of the Ultra Clear Panel which actually forms the front-side belonging to the display screen. This panel absorbs ambient light from the surroundings, which will practically totally does away with the bothersome reflections which could otherwise be present on the front of the screen. This in turn provides you with a picture that has deeper black areas and improved contrast, giving you a crisper, cleaner picture with wonderful shadow detail.
Getting this TV set will greatly your TV viewing enjoyment, as well as making it very easy to connect with all of your other media sources, such as your computer, your other personal devices, as well as the Internet.
Get all the details, and learn more about the other superior features of the Samsung UN40D6420UFXZA, among them The Eco Sensor, the Wide Color Enhancer Plus, and others. You will also find all the specs for the set. You can learn more about other superior LED TV sets here.
