>>IPHONE 4 SCREEN FIX???<<

My iphone screen is broken. The backlight and touch work ok but nothing shows up on screen. I can unlock my phone as i know were to slide to unlock and type in my pin code. I can acess control center and turn on flashlight and play music. Nothing shows up on screen it is just black. In the dark you can see the backlight turn on. I have the tools to fix, but what do i need to replace? Front glass? LCD? Please I am really desperate. Thanks