We don't have official word from Apple on the subject, but we're hearing rumors that might explain why some iPad 2 backlights tend to bleed -- according to Digitimes' anonymous sources, LG Display was "forced to reduce its shipments in the first quarter due to light leakage problem for panels," and that Samsung took up the slack. That suggests that some of today's vaunted 9.7-inch IPS displays may be from LG's faulty batch and some may be slightly superior Samsung screens, but we don't really recommend you crack yours open on the basis of an uncorroborated rumor (or at all, really) to find out the truth of the matter.

Update: An astute reader reminds us that while LG, Panasonic and Chimei make IPS screens, Samsung traditionally does not. Perhaps Samsung has managed to get its plane-line switching (PLS) displays into iPads instead, as was rumored last month, or perhaps this rumor is simply inaccurate, in whole or in part.

[Thanks, trucker boy]