BB Bold :: Screen Keeps Scrolling Down Automatically When A Bright Light Hits The Screen?

My screen keeps scrolling down automatically when a bright light hits the screen. Make it hard to use outside. Trying to make a phone call, read text, email, or even just scrolling through apps is very difficult because the screen scrolls down to the very bottom very quickly. When I scoll back up, it scrolls right back to the bottom. When I'm not outside or a bright glare is not on the screen it works great.