| The last few years have seen the growing popularity | | | | An LCD TV consists of liquid crystals which are |
| of LCD TVs. They offer a slim lined device that looks | | | | placed between two polarized filters and two |
| great in our living rooms and can offer a much | | | | transparent electrodes. The job of electrodes is to |
| improved picture. But how do they work? | | | | access each crystal and control electric flow. The |
| | | | | LCD crystals are unable to produce light therefore |
| An LCD TV is a flat panel TV based on liquid crystal | | | | they are backed up by external light source which |
| display that has inter active properties of both liquid | | | | causes them to become visible to viewer. Each |
| crystals and light. Crystals are nothing but cylindrical | | | | molecule or crystal behaves as a limiter, which limits |
| shaped molecules which allow light to pass through | | | | the light to pass through them depending upon the |
| them in their twisted phase. This untwisting of | | | | supplied voltage. Therefore for bright display voltage is |
| molecules depends on the amount of electric field | | | | kept low and for dark details voltage is kept high. |
| present. The greater the amount of electricity the | | | | |
| greater the untwisting of molecules and more will be | | | | Since LCD technology does not require extra |
| the blocking of light rays. Therefore by varying the | | | | electrodes to stimulate phosphorus as compared to |
| amount of current, the intensity of light can be varied. | | | | plasma, therefore they are much thinner and lighter in |
| | | | | weight. LCD technology is also called non-emissive and |
| Liquid crystal technology is used now days in many | | | | eco-friendly which means it does not give off any |
| electronic products such as camcorder, digital camera | | | | harmful radiations. |
| viewing screen, cell phone screens and computer | | | | |
| monitors. LCD TVs are specifically designed to view | | | | Owing to the above mentioned features, LCD TVs |
| video images. Display size of LCD TVs can vary from | | | | are gaining huge popularity despite of being expensive |
| 13 to 100 inches. When compared with plasma TV, | | | | and had become a very popular choice for home |
| these are much lighter and more durable. | | | | theatres and TV viewing. |
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