One way of making a laptop more environment-compatible is by using LCD displays. LCD or Liquid Crystal Display is known to consume considerably lesser power than a conventional display due the presence of a better technology — fluorescent backlighting. Now, efforts are being made to further improve upon the performance of laptops by popularizing models with Light Emitting Diodes (LEDs).
However, the difference between a LCD and LED display is not substantial and the real improvement would be the introduction of the much-anticipated Organic Light Emitting Diodes (OLEDs). The OLED technology is already in use in the form of cell phone displays and uses significantly lesser power than either LCD or LED displays. However, the challenge lies in creating OLEDs in a cost-efficient manner, as laptop screens are much bigger than those used in mobile phones.