Unleashing LCD TV

An LCD display consists of an array of liquid crystals that are placed between two glass plates with a source of light at the back. The electric charge applied to the crystals, results in the production of images. An LCD display consists of a flat panel that is made up of pixels filled with liquid crystals. Each pixel of an LCD display consists of a layer of molecules placed between two transparent electrodes and two polarizing filters. Before the application of electric field, the liquid crystal molecules are aligned in a particular direction. A variation in the voltage applied to the liquid crystal layer in each pixel, results in the production of different levels of gray. In color LCD displays, each pixel is divided into three subpixels of colors red, green and blue and the color elements are generated by subtracting colors from white light. As against the different-colored phosphors used in a plasma display, the cells in an LCD TV are colored by means of pigment filters, metal oxide filters and dye filters.