- Display device
A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people). When the input information is supplied as an electrical signal, the display is called an electronic display.
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. There are several types:
- Seven segment display (most common, digits only)
- Fourteen segment display
- Sixteen segment display
- HD44780 Character LCD a widely accepted protocol for LCDs.
Full-area 2-dimensional displays
Full-area 2-dimensional displays are used in, for example:
Underlying technologies for full-area 2-dimensional displays include:
- Light-emitting diode display (LED)
- Electroluminescent display (ELD)
- Plasma display panels (PDP)
- Liquid crystal display (LCD)
- HPA display
- Thin-film transistor displays (TFT)
- Organic light-emitting diode displays (OLED)
- Surface-conduction electron-emitter display (SED) (experimental)
- Laser TV (forthcoming)
- Carbon nanotubes (experimental)
- Nanocrystal displays (experimental), using quantum dots to make vibrant, flexible screens.
- Swept-volume display
- Varifocal mirror display
- Emissive volume display
- Laser display
- Holographic display
- Ticker tape (historical)
- Split-flap display (or simply flap display)
- Flip-disc display (or flip-dot display)
- Tactile electronic displays (aka refreshable Braille display) 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.
- Idiot lights, the "Check Engine" light on an automobile dashboard is the quintessential idiot light, giving only the information that something is amiss, but not what particular subsystem or component, nor how urgent the problem is. Neither does it give any information about issues that may be still within acceptable limits, but trending towards failure.
In the history of display technology, a variety of display devices and technologies have been used.
- Comparison of display technology
- Comparison CRT, LCD, Plasma
- Large-screen television technology
- Times Square, where numerous display devices can be seen in use
- Haptic technology
- Graphical user interfaces
- Computer-controlled milling machines
- Rapid prototyping
- Digital image processing
- Text display
- Vector graphics vs. Raster graphics
- Video card
- Graphics chip
- Computer graphics
- Flat panel display
- Human machine interface
- Society for Information Display - An international professional organization dedicated to the study of display technology
- display-Magazine - The Online Magazine for Displays
-  - Solari di Udine
Display technology Video displaysCurrent generationEidophor · Electroluminescent display (ELD) · Vacuum fluorescent display (VFD) · Light emitting diode display (LED) · Cathode ray tube (CRT) (Monoscope) · Liquid crystal display (LCD) (TFT · LED · Blue Phase) · Plasma display panel (PDP) (ALiS) · Digital light processing (DLP) · Liquid crystal on silicon (LCoS)Organic light-emitting diode (OLED) · Organic light-emitting transistor (OLET) · Surface-conduction electron-emitter display (SED) · Field emission display (FED) · Laser TV (Quantum dot · Liquid crystal) · MEMS display (iMoD · TMOS · DMS) · Quantum dot display (QD-LED) · Ferro liquid display (FLD) · Thick-film dielectric electroluminescent (TDEL) · Telescopic pixel display (TPD) · Laser phosphor display (LPD) Non-video 3D display Static media Related articles Comparison of display technology
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