Is a tablet with broken screen safe to use

Happy Optimistic

Reputable
Aug 4, 2014
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I have a Chinese tablet with a broken screen , apart of this screen became White all the the time, while the rest of it is normal ..
xda.jpg

The touch function is normal even in this white area.. there is a screen protector on the screen .
Of course the screen must be replaced ..
But I want to know: is there a chance that a harmful liquid or vapor or harmful gas can leak from the broken screen?.. I'm concerned mainly about MERCURY leak !
And anyway if this tablet not safe to use .. then Why ?