Half of my phone screen is blank and I can only see the top part.

so today morning i hit my phone screen and half of it turned black and some lines are at the top but i can only see the time. when touching the screen where the Time is its working but i cannot open it coz the keypad is at the bottom where the screen is black. I tried to press the volume up button and home button and the power button. it took me to the recovery mood but i was unable to fix the issue because i cannot see the options that were below coz of the screen being blank. So can it be fixed manually or?