Large-screen television technology eveloped rapidly in the late 1990s and 2000s. Various flat screen technologies are being developed, but only the liquid crystal display (LCD), plasma display (PDP) and Digital Light Processing (DLP) were released on the public market. These technologies have displaced cathode ray tubes (CRT) in the television space, mainly because of its bulkiness and increasing popularity of flatter televisions. However, just released technologies like Organic light-emitting diode (OLED) and not-yet released technologies like Surface-conduction Electron-emitter Display (SED) or Field Emission Display (FED) are making their way to replace the first flat screen technologies in term of picture quality. The diagonal screen size of a CRT television is limited to about 40 inches because of the size requirements of the cathode ray tube, which fires a beam of electrons onto the screen, creating a viewable image. A larger screen size requires a longer tube, making a CRT television with a large screen (50 to 80 inches) unrealistic because of size. The aforementioned technologies are much more suitable for large-screen televisions because they yield television sets that are much thinner in terms of depth.