I have some solution, which may fix the error.
Urgent (Emergency Method):
Actually, it (maybe) happens when the electric current is not passing or is passing in huge amount through the screen. So, when we touch anywhere, it doesn't respond because of so low/zero/so high amount of electric current passing through it. I just put my one finger into the usb port gently, put my naked foot on the floor and then tries to touch the screen, and it really works 70-75%. As +ve and -ve charges got connected and hence the screen works.
Safe Method:
Just turn off the Gloves Mode while charging.
Safe But Not-Safe Method:
Removes Glass Screen Protector from the Screen, rub it with a clean, small and dry cloth. Turn Off Gloves Mode.
I hope that works fine, otherwise Sorry!