More on IPS from WIKI:

Advantages

IPS panels display consistent, accurate color from all viewing angles and without having any blur.
Unlike TN LCDs, IPS panels do not lighten or show tailing when touched. This is important for touch-screen devices, such as smartphones and tablets.[6]
IPS panels can process high speed signals without data loss by using copper wiring with low resistance values.
IPS Panels offer clear images and stable response time.[6]

Disadvantages

IPS panels require up to 15% more power than TN displays.
IPS panels are more expensive to produce than TN displays.