The highest contrast ratio of the Lenovo L1711p is 1000:1. That's 100% less contrast ratio than a 20000000:1 PC screen, which is the most frequently found contrast ratio. The contrast ratio of all small monitors that have been available for more than two years ranges from Mega Contrast (worst) to 100000000:1 (best).
We think you might also be interested in some of the other flatpanel monitors that have a 1000:1 dynamic contrast ratio currently available including the Lenovo E1922 (£68.74) which has a better Rating.
If the contrast ratio of this flatpanel monitor is too low for you then you might also want to consider the EF185a (£79.99) (10000:1), the ET185a (10000:1), or the ET190a (10000:1) all from Edge10.