Hand-held computer can display only clearance? There are no side effects

can, in general the default settings are shortcuts to the closure of the only screen

As for side effects ……At least I did not find that laptops can do so, the screen saver to its role of the little screen, so there is not a period of time do not want to shut down, you can turn off the display can not take the initiative in the BIOS can be related
Set inside a certain period of time without self-closing operation display
no side effects, side effects is still in power