Photo by Alan_DThe LED television is one type of the various kinds of Television in the television market. These Televisions come with various kinds of technology and these varying technologies can affect how the various programmes in the television work ranging from your TV stations to your movies. LED TVs as one of the TV technology is becoming very popular. LED means light-emitting diode which is simply a source of light that is used for lighting. LED have been in existence since 1960s. LED Television is low in energy consumption and uses no mercury. They also have better picture quality. Above what the manufacturers want us to believe, there are some basic truths about LED TVs you need to know.
LED TVs are not new LED TVs are not new kind of TV rather they are LCD TV that is backlit and consist of light-emitting diodes in place of cold- cathode fluorescent lights. As against their popularity since last year, LED backlit TVs have always been in the market. Unlike other kinds of Television that uses its pixel as its light source, LED backlit LCD is transmissive in nature illuminating its pixel from behind.
LED TVs backlight configurations For the backlighting of recent LED Televisions, the concept of “full array” is used. Full array is the concentration of light emitting diodes at the back of the Television. For the engineers to manufacture thin Televisions, they need to remove the layers of LEDs and plant them around the sides of the Television. To emit light inwardly towards the middle of the TV, you need to use the “lightguides”. This type of TV is classified as edge-lit LED Television.
Local dimming Modern inventions in LED Television with full array behind them can emit what is known as local dimming. Local dimming has dual usage. It can be used for the purpose of dimming or brightening some areas of the backlight. Local dimming reduces the light the darkened pixel emits which results in darker blacks. Remember the level of black is important in the production, the thicker the black, the better the picture and the image seem sharper.
Edge-lit TVs are thinner but not uniform. Amongst the benefits of the lighting system in the edge-lit LED TVs, one benefit remains outstanding and that is the ability of manufacturers with this system to make thinner LED Televisions. The only downside is that the thin nature is achieved at the expense of the uniformity of the backlight. LED TVs with this scheme of backlighting always have colour disparity in their display.
LED TV has a poor off-angle view. One negative aspect of this LED TVs is the degradation of the picture if sitting to the side or if the TV is placed a little higher or lower. With LED backlighting, this situation might even get worse. Some LED TVs offers the best black levels of any LCD as long as you’re sitting in the sweet spot, with your eyes at the middle of the TV. Moving a little away from the Television, you will notice degradation in the picture quality.
Efficiency of the Backlight. Some LED TVs have highly effective flat panels and are really low on energy consumption. Research has revealed that LED Televisions averagely use about 101 watts as against 111watts usage of other standard brands. Though the size of the TV and its brightess can affect its energy efficiency. In any case, you will be saving some money on power using a LED TV.
Before you make a choice to buy a LED TV, you need to understand the technology behind it to know if it is really the kind of Television you need. You may have the best LED TV with the highest technology, if your picture setting is not correct, there will not be any difference.