Not in this case - the ones we're talking about, are 100% caused by temperature difference. TIP: Look at schematics what components are directly under those brighter points (when device is closed, i.e. no keyboard slided-out)

gorilla glass is another "awesome" thing that came soon after capacitive screen nonsense - it is hardened glass that is more resistant to scratches, but instead, breaks at the slightest excuse (like, when you drop your device from 5 centimeters height, cause it slipped from your fingers during placing it in desk). Usually forcing you to buy overpriced replacements, or cheap Chinese ones, that, for a change, break without *any* excuses (i.e. just by lying somewhere, due to tension of being glued to device by double-side tape, at the edges).

Add to this the fact that thing is, usually, glued to the lower parts by some infernal double-side tape, requiring bumbo-jumbo during replacing, and you have whole picture. Been through this with tablet of one family member, and as you may imagine, i sincerely "love" gorilla glass and it's derivatives.

/Estel