I had the EXACT same problem with my Acer Aspire notebook and just had to send it back under warranty. I lived with that problem for 5 months during which time I just clipped my screen with an oversized bulldog clip to stop the flickering. That was great until the entire 1/4 of the screen died and blacked out altogether, leaving me with a very, VERY strange viewable area -- had to move my taskbar to the left of my peripheries to see the startup bar.
Moving the laptop around to different locations seemed to exacerbate the problem... something to do knocking around the loose connections or something apparently -- I think the tech support thought I was dumb.
In my opinion, you should send it back to the manufacturer -- it's nothing you can figure out how to deal with on your own or get it repaired before the problem gets worse.
Good luck! Oh... and NEVER buy Acer if you can help it, no matter how enticing the price may appear!