Screen keeps turning on by itself...

[devicemanager]

Recently I moved to a location where the cellular signal is very weak but the phone works if I am standing near a window. Reception is in and out of EVDO and 1x often and very few bars at best. However if I drive to the corner I get full bars EVDO. I have a feeling the change in signal is causing the screen to turn on and really draining my battery. I barely get 4 hours on a full charge. Is there anything I can do to stop the screen from turning on and wasting my battery? I did the PRL update too with no luck. Anyone have any suggestions? Thank you!