What is LCD TV?
LCD TV is a flat panel digital television that uses liquid crystal technology (LCD), verse competing plasma technology or older cathode Ray (CRT) technology. LCD is also used in computer displays and LCD TV is simply a larger monitor with a built -in TV tuner or the ability to display high -resolution resolution powered from a digital digital box provided by a cable TV or satellite dealer.
LCD TV and plasma TV today are two front types of high -resolution TVs that are easily seen by their thin profiles by only a few inches. Old-style CRT TVs had an extremely deep track to place the device on the vacuum tube. The CRT TV is also very difficult with a 36 -inch (91 cm) model weighing more than £ 230 (108 km), while the equivalent LCD TV weighs closer to £ 37 (17 kg) and can be hung on the wall as a film screen.
LCD TV uses five -layer technology to bring colors and pictureKy to live. These layers consist of backlight, polarized glass, pixels colored mask, liquid crystal solution and a second leaf of polarized glass. Each pixel on the LDC screen has a dedicated transistor that manipulates the orientation of crystals through precise electric charges and voltages. Crystal orientation acts as a shutter that blocks or allows backlight to flow through specific colored pixels and creates shades that form a picture.
LCD technology creates negligible radiation and uses a fraction of plasma television electricity. Another favorable attribute of the LCD TV is that the screen is non -reflective, so it is an excellent choice for a room with windows, glass doors, skylights or other light sources. LCD TV is also a good choice for places where lamps or overhead lighting would otherwise reflect the set and worsen browsing.
LCD TV comes in many sizes from small screens suitable forThe number of giant kitchens shows 100 inches (254 cm) and larger. The largest TVs are limited to several manufacturers such as Sony®, Panasonic® and LG®, and Plasma TV can be cheaper in this elite category than LCD. If you are looking for a LCD TV in a more common screen size of up to 55 inches (140 cm), you will have many options.
When shopping LCD TV, several specifications should be kept in mind. Look for a wide angle of observation so that the colors do not float when looking at the center. The brightness (expressed as nits ) is not a big problem, because the average LCD TV is quite clear and the response time of pixels should be more than more, because the rapid response time means that slow pans and action shots will remain clear than blur or spirit.
Some people prefer plasma television over LCDs, because plasma has traditionally attributed the ability to depict more white -white white next to deeper blacks in the same frame of images without leaching black. While LCD TV improves in thisareas, experts still put the plasma edge. Plasma technology also does not suffer from scary, although newer LCD TVs no longer have this problem with an improved response time.
As a last consideration, the LCD TV is not lost over time, but eventually burns and is generally not worth replacing, because it costs more than buying a new television. The average life length of the backlight is usually rated to 60,000 hours. If you watch TV six hours a day, it will take 27 years to reach 60,000 hours. In households where television is left virtually throughout the day and night, it can be expected that the backlight will take about 11 years (assuming 15 hours a day). Plasma TV has a half -life of 60,000 hours, which means that the display will be half clear as it was when it was new, but it will continue to work.