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Display backlight lifetime

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Backlight lifetime is always an issue when choosing a display to work in a difficult environment. Simple precautions can be taken to get sure LEDs, which are the active elements of display backlights, have a predictable and long enough lifetime:

  • Use a stable current source design to feed the LEDs
  • Always use nominal current value
  • Backlight dimming through a PWM on/off switch
  • Keep display environment temperature as low as possible
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