In a LCD flat screen TV, tiny liquid-crystal-filled cells are between the glass sheets. A bright white light is located behind the cells and illuminates them to create the picture. In an LCD screen, the energy untwists the crystals to allow them to filter the white light that is generated by the lamp Depending on the amount energy running through the cell, it will untwist to the desired level. In an LCD display, the white light is filtered to block out the unneeded colors until the correct hue is obtained. If the crystal is all the way untwisted, then the color produced is white. The colored areas of the pixels work to create the entire spectrum of colors.
