good quality monitor with one annoying feature

I really like the picture quality (I am no graphics or photo enthusiast pro, so I am only using it for standard computing and web browsing). I like the factthat I can turn to in portrait mode (I use Zinio to read magazines online and it is very nice to see one page at a time in portrait mode). The annoying feature which I Referring in the title is the sensor Which turns the display off When You Are not in front of the monitor. It Detects this by looking for movement. HOWEVER, WHEN I am Concentrated on something for more than 5 minutes, it turns off (it fails to detect me). It happened quite a few times did it made me turn off this feature.