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back to article Boffins' better blues beat battery blues

All the way from the battery in a pocket to the LED TV on a wall, the colour blue is a problem: blue LEDs are less efficient than the reds or greens that make up the other two primary display colours, and that's a problem for power consumption. Researchers at the University of Michigan are now claiming as much as a fourfold …

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  1. John H Woods Silver badge

    I predict...

    ... a new set of home screens run through a 'how a dog sees' color filter.

    2 1 Reply
    1. Anonymous Coward
      Reply Icon
      Anonymous Coward

      Re: I predict...

      Pigeons see in black and white so....

      0 0 Reply
  2. Semtex451

    Shurley this same method could be used to improve the efficiency of red and green too, making the whole panel more efficient, no?

    3 2 Reply
    1. CliveM
      Reply Icon

      No, the new step here merely allows them to use what they were already using with green and red LEDs for blue ones: blue photons are higher energy than the others: that bigger punch causes photodegradation that doesn't occur with punier photons.

      1 1 Reply
  3. Trollslayer

    Simple concept

    but a lot of work to achieve it.

    1 0 Reply
  4. John Smith 19 Gold badge
    Thumb Up

    Impressive.

    But how do organic LED's compare with the regular sort for life time to begin with?

    A 10x improvement should not be sniffed at and a 4x improvement in energy efficiency is good too (it's true this trick is not necessary for lower energy photons but applying it to those colours should give some improvement there as well.

    The real proof of the pudding will be how many mfg's introduce it in their displays and when.

    Thumbs up for some solid science.

    1 1 Reply
  5. Anonymous Coward
    Anonymous Coward

    Re. Impressive

    Cool stuff indeed, as many blue OLEDs have medical applications.

    can't say any more due to NDA..

    0 0 Reply
  6. Faux Science Slayer

    You could led and electron to an OLED....

    but you couldn't get much blue....until now....

    when electrons can get PHOLED for ten times as long ! ! !

    0 0 Reply
  7. Anonymous Coward
    Anonymous Coward

    Until someone invents

    a variant of OLED with a dipolar arrangement so it generates two different colours depending on the voltage polarity applied a bit like a bicolour LED.

    In which case it would be called an ASHOLBLED (ASymmetric Hole injection Organic Light Bidirectional Light Emitting Diode

    AC because this is appalling even for me, and he would doubtless be made to walk the plank... :-)

    0 0 Reply

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