Personal Mag

There are many LCD TV manufacturers today. Sony, Sharp, Samsung, etc., are a revolution in the world of television. TFT color display provides excellent display quality is, that you feel like you are looking at the real thing. LCD televisions are used in home theater systems you experience a feeling of sitting in your own home movies and theater-quality surround-sound system.

LCD display is a pure fun factor. Today you can sit in the comfortfrom home and experience the theater with popcorn straight from the kitchen. Let us understand that LCD technology.

How does it work?

Each pixel in an LCD display is usually made of a layer of small molecules between two transparent electrodes and two polarizing filters in which the axes of transmission were vertically aligned. If there is no liquid crystal between the polarizing filters, the light through the first filter to go, and beblocked by the second polarizer.

The surfaces of the electrodes, which are in contact with the liquid crystal material is then treated so that they are then aligned with the liquid crystal molecules in a certain direction. That said, the treatment will usually consist of a thin polymer layer that is uni-directional rubbing with, say, a piece of cloth. The direction of the liquid crystal alignment is then determined by the direction of friction. Electrodes are used in an LCD, fromtransparent conductor called Indium Tin Oxide (ITO).

An electric field is applied, but before that is, determines the orientation of liquid crystal molecules by the alignment of the surfaces. There is a nematic device (which is still the most common LCD), in which the surface orientations at the two electrodes are placed perpendicular to each other, so the molecules arrange themselves in a helical twist. This reduces the rotation of the polarization of the incident light andThen the device appears gray. This is mainly polarized perpendicular to the second filter, which blocks this light and the pixels are now black. Can be applied by controlling the voltage of the electricity in the crystal layer in each pixel, the light allowed to pass through in varying amounts to what is now different shades of gray.

Another change in the polarized devices are millions of tiny dots, leading to a clear quality image on the LCD --Screen.