Liquid Crystal Display is all about flat-screen TV technology. The technology of liquid crystal display has penetrated our everyday lives in everyday things like wristwatches, mobile phones, calculators, computer monitors and high definition television. The usage is growing rapidly and sales of LCD TV is expected to surpass 4 million in America alone.
There are some clear advantages of LCD panels with other display technologies. They are slimmer and hardly gomore than 3.5 `` in depth. These are easier and best of all they draw less power - only about 60% of the power consumed by plasma displays. This TV does not spew electromagnetic waves that are harmful.
Of course there are drawbacks - limited point of view is limited contrast ratio is and the time of the display response may concern. The biggest of all is caused by the price frown. Although it covered but it is significantly higher than the plasma counterpart.
LCDDisplays comprises mainly of sheets of polarized glass sheets - two in number, a liquid crystal solution is sandwiched between them. These liquid crystals are very specific, it causes an act to open the shutters and close entry light when needed, depending on the current flow. This current through the liquid crystals is regulated by voltage that is applied between the glass sheets through the electrodes that are transparent. These form a network with lineOn the one direction of the panels and columns on the other side, the pixel or pixels.
What are these liquid crystals? Matter can be found in three states - solid, liquid and gas. However, there are substances present in a state that there are neither solid nor liquid at any point of time. The behavior of these molecules is also peculiar. They remain in their orientation, as in a firm, yet shuffle for admission to various positions, such as the moleculesa liquid. Thus, these liquid crystals can be termed neither solid nor liquid though they tend to have an affinity for the latter - that the liquid state.
There are different types of liquid crystals, each with different properties. The LCD panels are used as the nematic phase of liquid crystals. The molecules are arranged in a special way with distinctive patterns.
LCD display systems are of two types - passive and active matrix. The former is more complicated,produces the best pictures and consequently increases the price. During the manufacture bad points are a serious problem. Innumerable controlling transistors are required on the glass substrates for each sub-pixel control. A typical wide screen panel will require 3.1 million transistors. Each of a faulty transistor can not be replaced and are known as dead or stuck pixels. If we ever made and then a black spot will show and if it is then shown on a white spot. If there is a crossingSet the whole unit will be discarded.
It was in the early 2000 `s, that flat-panel LCD TV market took over from the typical CRT` s. The technology is based on the properties of polarized light. The thin semi-gel liquid crystal trapped between two polarized slender leaf is divided into pixels.
There is hectic activity to overcome the technological difficulties in order to make them affordable for the quantity. So the LCD TV has done toaffordable in the headlines success.
Tags : HDTV TVs Reviews
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