Quote:IR is caused by uneven use (aging) of pixels. When there are black bars on the screen then those pixels are not being used. That's why it's recommended to vary the types of material that you watch so that the effects of black bars and fixed images will have a chance to even out the age of your displays pixels.
If you watch nothing but wide screen movies, with an aspect ratio greater than 1.78:1(16x9), after a long while there would be new (never used) pixels at the top and bottom of your screen (the black bars), and old pixels everywhere else. Not to worry, that's not going to happen.
Although, someone did post a while back that he liked to turn on ESPN in the morning and left it on for background noise unless he was actually watching his TV. That might eventually cause the ESPN logo to become a prominent feature.