I want to be able to turn TFT screen on and off using MCU. Is it safe to put a FET on the ground line of TFT and drive it from MCU, by disconnecting and connecting ground from the screen? or should I use p-type feet on power line to switch it? I am not sure if it's a good idea to leave TFT internal electronic's floating.
EDIT: LCD TFT 2,4"240x320 Arduino shield, MCU is barebone Arduino(Atmega328P) and FET i planned to use is 2N7000.