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Thin Film Transistor

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Transcript

  • 1. T HIN F ILM T RANSISTOR A small discussion
  • 2.
    • TFT is made by depositing thin films on semiconductor.
    • A common substrate is glass since the primary application of TFT’s are Liquid Crystal Displays.
    • Silicon
  • 3. WHAT IS TFT LCD ?
    • TFT LCD is a sandwich like structure with crystal filled between two glass plates.
    • It is common in notebook computers , that it has transistor for each pixel.
  • 4. ADVANTAGES
    • Light weight
    • Portable
    • Rugged
    • Low power consumption
    • High resolution
    • Wide variety of commercial application
  • 5. HOW DO THEY WORK ?
    • A display is composed of matrix of picture elements .
    • Millions of pixels create an image on the display.
    • TFT’s act as switches to individually turn ‘on’ and ‘off’ for each pixel.
    • Active elements
  • 6. DISADVANTGES
    • The general comment from the people is that the LCD TFT gets switched off after sometime .
    • The liquid crystals inside the display are poisonous
    • Spills off from a cracked display should be washed with soapwater.
  • 7. ASUSUAL………..
    • OPEN HOUSE
  • 8.