12-10-2017 07:34 AM
Welcome to the Lenovo Community !
I am not an owner of your model, but in reviewing the User Guide (Page #13) for your computer I see there are options for switching between the internal and a external display if that is of interest. You would use the F10 key to perform this function or Windows apparently allows the use of the Windows key + the P key to perform the same task. Here is a link the User Guide for your reference.....
If you are looking to just shut down or blank the internal display when not in use, you can adjust the Windows Power Plan Options to do that. Here is a little guide for the different Power options......
12-10-2017 08:20 AM
12-10-2017 08:39 AM
Sorry there is no option like that on your model that I am aware of. There is a third party application that can be used. Never used it so I don't know how good it works. Here is an article on that application......
You can also assign the Power button in Windows to turn off the display. Here is how......