https://www.pcgamer.com/what-are-the-differences-between-monitor-panel-types/

Notice how the TN monitor (far left) yellows at an angle. The IPS monitor (right) has no such issue 

After many hours, you’ve finally finished selecting the parts for you perfect gaming PC build. Now, you just need a monitor. But, why are there so many choices? Depending on your use case, it’s wise to consider what type of panel you should select. Each has their pros and cons, and some are more well suited to specific tasks than others. Plus, there's a good chance you'll be using that monitor for many years, through multiple PC upgrades, so getting something that looks right is important.