I cracked my iPhone screen, should I buy a digitizer or LCD screen?

IPhone 4. The surface is shattered and I need help guys. It's the front and that cracked and I have it taken apart and I'm about to buy a screen. Should I buy a digitizer touch screen or LCD screen?

Your half way there. The LCD and touch screen digitizer are fused together. We highly suggest replacing it with the same fused part. We have this part available and ready to ship for 49.99$
We include free tech support, repair video, pry tool with the order and ship same day!
Chat with us for immediate support at http://www.RepairsUniverse.com.