Iphone 4 screen replacement?

So basically i've dropped my iphone and the screen has cracked… But when i look online to buy a replacement screen, it says touch screen digiziter or lcd replacement screen, what one do i buy just to replace the broken glass?

Google for a gadget repair shop there's one in loughton highroad that do them for 60 pounds for an example or that might help you if you live near there

Hey… Its easier if you get a company to fix it for you. I broke my iPhone and sent it to Phone-Hub… They fixed the screen for me really cheapily and it came back good as new. It just saves hastle and it means you get a proper profesional repair.
http://www.phone-hub.co.uk/