hdmi mirror and turn iPhone/iPad display off?

I was thinking of using my ipad 2 as a netflix, movie player for different tv's around my house and maybe even a make shift desktop computer with bluetooth keyboard/mouse and external monitor.

I haven't ordered the hdmi adaptor yet to try this and I was just curious if I can mirror my ipad screen and then turn the ipad display off so I only have on the external display?

There are two reasons that I want to do this. One is it's very distracting when two screens are on when you're watching a movie or tv show in a dark room and the other is I don't want to burn out the screen by having it on all the time.

Also, I was curious does the headphone jack still output audio when the hdmi adaptor is plugged in?

hdmi adaptor mirror and turn iphone 4s display off?

I was thinking of using my iphone 4s as a netflix, movie player for different tv's around my house and maybe even a make shift desktop computer with bluetooth keyboard/mouse and external monitor.

I haven't ordered the hdmi adaptor yet to try this and I was just curious if I can mirror my iPhone screen and then turn the display off so I only have on the external display?

There are two reasons that I want to do this. One is it's very distracting when two screens are on when you're watching a movie or tv show in a dark room and the other is I don't want to burn out the screen by having it on all the time.

Also, I was curious does the headphone jack still output audio when the hdmi adaptor is plugged in?

Merged your threads and relocated them to the iOS forum.
Not really a need for 2 identical threads for a single question and the option you are asking about will depend on whether iOS permits such function on the device.