Can I damage screen (Nexus 7) by having it turned on and not change for longer periods of time?

I wanted to use an app called TimeWise to have a timer ticking and showing how much time is left in a time-boxed task. However, I am not sure, if having the screen turned on like this (even with very **low brightness**) for **25 minutes** without changing its content other than the counter, cannot damage it. These 25 minutes can be repeated for 4-8 hours. It is likely, that I will change the content of the screen from time to time, so this might be helpful, but I am not sure. Does anyone know if my concern is pertinent, or it is no problem for this type of screen? The device I'm using is Nexus 7 2013 version. Thanks!