Battery burning screen?

[kxs783kms]

I've posted this on other threads and wanted to get opinions from here also. When I pull up a white screen, I see a small circle in the middle of my screen, as if the battery is burning it into it. (Similar to how the battery would burn the marks on back of the white iphones.) 2 other people confirmed that they have the same mark, so I was trying to see if this was a problem with a small batch of phones. Anyone else seeing this? Or had this happen to their screen before? I would like to add that I installed a Zagg screen protector with solution, but the circle seems to perfect to be from that.

 

[heycow]

Photos please.

 

[tmoney2007]

How small? If the LCD is edge lit, there might be a small, slightly darker spot in the middle.

How often do you pull up a white screen?