A flat-panel display FPD is an electronic viewing technology used to enable people to see content still images , moving images , text , or other visual material in a range of entertainment , consumer electronics , personal computer , and mobile devices , and many types of medical, transportation and industrial equipment. They are far lighter and thinner than traditional cathode ray tube CRT television sets and video displays and are usually less than 10 centimetres 3. Flat-panel displays can be divided into two display device categories: volatile and static. Volatile displays require that pixels be periodically electronically refreshed to retain their state e. A volatile display only shows an image when it has battery or AC mains power.
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