The phrase "monitor screen" refers to the part of a computer or TV that shows you what you are doing or watching. It's the thing you look at on your desktop or when you watch videos. Full definition
I will say that with my oldest I was a little crazy about monitoring screen time, but you better believe that went out the window for our middle when the baby came home! (iowagirleats.com)
The energy monitor screen displays how the hybrid system works in real time. (toyotaofnaperville.com)
By monitoring the screen, users can see household energy consumption and make changes in what appliances and devices they're using, and when. (treehugger.com)