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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 [ edit ]

In use [ edit ]

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 [ edit ]

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.

Other types [ edit ]

• Vacuum fluorescent display
• Electroluminescent (ELD) display
• Plasma (PDP) display
• Laser-powered phosphor display

Cathode-ray tubes were also formerly widely used.

Full-area 2-dimensional displays [ edit ]

2-dimensional displays that cover a full area (usually a rectangle ) are also called video displays , since it is the main modality of presenting video .

Applications of full-area 2-dimensional displays [ edit ]

Full-area 2-dimensional displays are used in, for example:

• Television set
• Computer monitors
• Head-mounted displays , Heads-up displays and Virtual reality headsets
• Broadcast reference monitor
• Medical monitors
• Mobile displays (for mobile devices )
• Smartphone displays (for smartphones )
• Video walls

Underlying technologies of full-area 2-dimensional displays [ edit ]

Underlying technologies for full-area 2-dimensional displays include:

• Cathode-ray tube display (CRT)
• Light-emitting diode display (LED)
• Electroluminescent display (ELD)
• Electronic paper , E Ink
• Plasma display panel (PDP)
• Liquid-crystal display (LCD)
  • High-performance addressing display (HPA)
  • Thin-film transistor display (TFT)
• Organic light-emitting diode display (OLED)
• Digital Light Processing display (DLP)
• Surface-conduction electron-emitter display (SED) (experimental)
• Field-emission display (FED) (experimental)
• Laser TV (forthcoming)
• Carbon nanotubes (experimental)
• Quantum dot display (QLED)
• Interferometric modulator display (IMOD)
• Digital microshutter display (DMS)
• microLED (in development)

The multiplexed display technique is used to drive most display devices.

Three-dimensional displays [ edit ]

• Swept-volume display
• Laser display
• Holographic display
• Light field displays

Mechanical types [ edit ]

• 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 [ edit ]

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

References [ edit ]

External links [ edit ]

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.