LCD Technology Essentials Quiz
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Questions and Answers

What is the purpose of the polarizing filter in an LCD?

  • To provide a reflective surface for the display
  • To align the layers in contact with the liquid crystal
  • To create the transparent electrode pattern
  • To control the amount of light passing through the liquid crystal (correct)

    • What happens if there is no liquid crystal between the polarizers in an LCD?

  • The liquid crystal would not be able to align properly
  • The crossed polarizers would block out the light, making the screen appear dark (correct)
  • The polarizers would allow all light to pass through
  • The screen would appear brighter than usual

    • What effect do adjusting the voltages on the electrodes have on the LCD?

  • It alters the transparent electrode pattern
  • It changes the color temperature of the display
  • It changes the amount of twist in the liquid crystal and varies the amount of light passing through (correct)
  • It modifies the alignment layers in contact with the liquid crystal

    • What is the function of the clear common electrode on glass in an LCD?

    <p>To provide a path for the voltage to be applied across the liquid crystal</p> Signup and view all the answers

    What is the purpose of the reflective surface or light source in an LCD?

    <p>To provide the necessary light for the display</p> Signup and view all the answers

    What happens if the voltages on the electrodes are adjusted in an LCD?

    <p>The amount of twist in the liquid crystal changes, varying the amount of light passing through</p> Signup and view all the answers

    What is the function of the alignment layers in contact with the liquid crystal in an LCD?

    <p>To control the orientation of the liquid crystal molecules</p> Signup and view all the answers

    What is the purpose of the transparent electrode pattern on the glass plate in an LCD?

    <p>To apply voltages to the liquid crystal material</p> Signup and view all the answers

    What role does the polarizer with crossed axis play in an LCD?

    <p>It blocks out light when there is no liquid crystal between the polarizers</p> Signup and view all the answers

    Why would the crossed polarizers block out light in an LCD without the liquid crystal?

    <p>Due to the inability to transmit light with perpendicular axes</p> Signup and view all the answers

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