IPhone cracked, maybe put tape?

So i dropped my iphone and the entire back of it is shattered. Like the glass is still there but its completely cracked up. I have to hide this from my dad at least until december so i bought a case to hide it.

but i don't want the shards of glass to come off, so i was wondering if i put tape on the entire back side of my phone would that keep the glass pieces from falling off under the case?

Or you can just replace the lcd screen of your iphone that doesn't coast so much and problem fixed