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Transcript

  • 1. Group members Alisha Korpal Nivia Jain Sharuti Jain
  • 2.
    • A video display device is a device for visual or tactile presentation of images(including text) acquired, stored, or transmitted in various forms .
  • 3.
    • CRT
    • Flat panel Displays
  • 4.
    • The cathode ray tube (CRT) is a vacuum tube containing an electron gun (a source of electrons) and a fluorescent screen, with internal or external means to accelerate and deflect the electron beam, used to create images in the form of light emitted from the fluorescent screen. 
  • 5.  
  • 6.
    • A single electron gun for a single color monitor
    • Phosphorus screen
  • 7.
    • High dynamic range
    • excellent color
    • The color range of CRTs is unmatched by any display type except OLED
    • Can display in almost any resolution and refresh rate
    • Sub-millisecond response times
  • 8.
    • Large size and weight
    • High power consumption
    • Generates high of heat
    • Can suffer screen burn-in
    • Produces noticeable flicker at low refresh rates
  • 9.
    • A class of video devices that have reduced volume , weight & power requirement than refresh CRT.
    • Currently they are used in pocket videos , laptop etc.
  • 10.
    • Emissive displays
        • Plasma panels
        • Electroluminescent displays
    • Non emissive displays
        • LCD
  • 11.
    • Emissive display are device that convert electrical energy into light
    • Image is directly produced on the screen
    • Phosphorus convert electron beam or UV light into visible light.
  • 12.
    • Light is produced behind the screen and the image is formed by filtering this light.
  • 13.
    • Liquid Crystal Display
    • Portable
    • Less desk space
    • Lack of flicker and low glare reduce eyestrain.
  • 14.
    • A liquid crystal is an organic compound in a transition state between liquid and solid forms that resemble a liquid.
  • 15.  
  • 16.
    • Lightweight construction
    • Thin panels
    • Low energy consumption
  • 17.
    • Quality of image depends on viewing angle
    • Low response times
  • 18.
    • A plasma display panel (PDP) is a type of flat panel display.
    • They are called "plasma" displays
    • Technology utilizes small cells containing electrically charged ionized gases commonly known as fluorescent lamps .
  • 19.
    • Large displays
    • Good color rendering
    • Thin panels
    • No dependence on viewing angle
    • Brightness
  • 20.
    • High costs
    • Power consumption
  • 21.