There's a fairly good chance of getting some backlight bleed on just about any LCD, but at the same time there's screens that are more prone, due to shoddy assembly/build quality. Sometimes it will be gaps round the outside where light is leaking through, sometime the panel will be stressed during assembly and that will result in lighter patches.
All you can really do is read as many opinions as possible (searching this forum is a good place to start) from people who have the screens and see if they have any bleed, and thus try to improve your chances. There's no guarantees though, but you can always return a screen you're not happy with using DSRs.