Yes, you tore your ribbon cable. However, you won't need to spend $200 to fix it, as The tinker said. Just oder another screen, or send in your iPhone for repair. Here is a link if you are interested in having us do it. And yes (although I think you already know this), the LCD Display Screen and Glass Digitizer Touch Screen are one unit and INSEPERABLE on the iPhone 4. Although, if you purchase them both seperately and install that way, you could save money on the next repair by only having to replace one =D. Food for thought...
http://goo.gl/1iTjm
Tough Gaming Technical Support
Agent Elisha