When I replace the digitizer do I need to replace the LCD as well?

[annalise andrews]

when i replace the digitizer do i need to replace the LCD as well????

Ok so the glass inst broken and has never been broken but a section of the screen doesn't work, its not blacked out or anything it just simply wont let me select anything, the rest of the screen work just the middle section doesn't. So i need to know if i relaxed the digitizer do i need to get a new LCD as well or will just the digitizer fix it?? Please help!!!