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A display device is an output device for presentation of information in visual^[1] or tactile form (the latter used for example in tactile electronic displays for blind people).^[2] When the input information that is supplied has an electrical signal the display is called an electronic display.

Common applications for electronic visual displays are television sets or computer monitors.

Types of electronic displays

In use

These are the technologies used to create the various displays in use today.

• Liquid-crystal display (LCD)
  • Light-emitting diode (LED) backlit LCD
  • Thin-film transistor (TFT) LCD
  • Quantum dot (QLED) display
• Light-emitting diode (LED) display
  • OLED display
  • AMOLED display
  • Super AMOLED display

Segment displays

Some displays can show only digits or alphanumeric characters. They are called segment displays, because they are composed of several segments that switch on and off to give appearance of desired glyph. The segments are usually single LEDs or liquid crystals. They are mostly used in digital watches and pocket calculators. Common types are seven-segment displays which are used for numerals only, and alphanumeric fourteen-segment displays and sixteen-segment displays which can display numerals and Roman alphabet letters.

Mechanical types

• Ticker tape (historical)
• Split-flap display (or simply flap display)
• Flip-disc display (or flip-dot display)
• Vane display
• Rollsign
• Tactile electronic displays are usually intended for the blind. They use electro-mechanical parts to dynamically update a tactile image (usually of text) so that the image may be felt by the fingers.
  • Optacon, using metal rods instead of light in order to convey images to blind people by tactile sensation.

See also

• Comparison of CRT, LCD, plasma, and OLED displays
• Graphical user interfaces
• History of display technology
• User interface
• Input device
• Text display

References

External links

Wikimedia Commons has media related to Display devices.

• Society for Information Display - An international professional organization dedicated to the study of display technology
• University of Waterloo Stratford Campus - A university that offers students the opportunity to display their work on the school's 3-storey Christie MicroTile wall.