LCD or Plasma?

First of all, let us cut short the question that every buyer uninformed will inevitably arise in his favorite store: LCD or Plasma? Before answering this question that is probably one of those most occurring  when purchasing a flat screen, it is necessary to detail a few lines in the principle of these two technologies that are quite different.

Principle of the LCD
The panel of an LCD screen is composed of several layers that are traversed by a light background (created by neon). The light rays will be projected onto a polarizing filter and through a first layer of glass, then a filter for guidance. The light then reaches a slab containing liquid crystals, which are more or less direct and pass on the basis of an electrical current. A second filter orientation, 90 degrees to the first, will then pass a portion of the rays and filter it. The light will eventually pass through a color filter, red, green or blue, then a second layer of glass and a third polarizing filter. The pixel is created and it will make the image of the LCD.

Principle of plasma
The slab of plasma is composed of two glass plates, between which there are hundreds of thousands of capsules filled with a gas mixture (xenon) that glow when exposed to an electrical pulse. For a pixel, it takes three capsules component colors (red, green, blue). Electrodes will submit an electric pulse of varying intensity, which excite the gas mixture and illuminate the phosphors contained in these capsules.

Difference
The fundamental difference between the LCD technology and operation of the plasma is in the fact that in an LCD screen, there is a light-based wrought by the LCD. But it is not perfect, and when it comes to reproducing deep black, the role of liquid crystals (which must then retain all the light) is undermined. In contrast, plasma technology, the pixel emit no light when not solicited. This difference explains why LCDs are not getting as deep blacks that plasma screens, although their contrast tends to rise through a scoring machine and push the use of a powerful lamp (which provides Report white / black).

Differences
If the distinction between a plasma and LCD panel is the depth of black, this is not the only difference existing between these two types of screen. Here’s a quick overview of the significant dissimilarities between the two technologies.

Although these differences exist, however they tend to fade over the improvements of digital processing, and the question of opting for an LCD or plasma can not find its answer in the depths of black or latency. In reality, they are more manufacturing constraints that will guide your choice, as LCD panels over 40 inches are not many , while in contrast, plasma screens with a size less than 50 inches are virtually non-existent on the market.

So it is your budget that will make a huge difference over your choice of technology. Finally, you are faced with a situation where you have a little choice but where space constraints and budget will decide for you. The first question you ask a salesperson must also be: which one do you have ? get informations about visual comfort, the screen size  depend ing on the distance from your screen of your sofa…

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