Cathode ray tube
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A cathode ray tube is a vacuum tube containing one or more electron guns, which emit electron beams, which are directed and controlled to display images on a phosphorescent screen. The images may repr
Oscilloscope cathode ray tube
A Macintosh computer from the 1990s with integrated CRT display
The rear of an LG.Philips Displays 14-inch color cathode ray tube showing its deflection coils and electron guns
Typical 1950s United States monochrome CRT TV
Plasma display
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A plasma display panel is a type of flat-panel display that uses small cells containing plasma to produce an image. Each cell functions as a tiny fluorescent lamp, emitting ultraviolet light when the
Cathode ray tube
…CRT TVs and computer monitors. Since the late 2000s, CRTs have been superseded by flat-panel display technologies such as liquid-crystal display (LCD), plasma display, and OLED, which are cheaper to manufacture and operate and are also significantly lighter and thinner. Flat-panel displays can also be made in very…
Last-generation Panasonic Plasma TV. 55” (140 cm) ST60 (TX-P55ST60E), released in 2013.
Plasma displays were first used in PLATO computer terminals. This PLATO V model illustrates the display's monochromatic orange glow seen in 1981.
Toshiba T3100 plasma screen close-up
Plasma displays became 75% thinner between 2006 and 2011.