How can I tell if my laptop screen is IPS or TN?

[Barfo]

Got a new Latitude E7440 issued by my employer, so I don't really have a detailed spec sheet. It's got a 14 inches, 1080p panel. I don't really know (or care) if it's a touchscreen since it's been downgraded to Windows 7.

I would like to know if the panel is IPS as some reviews say or something else, since the viewing angles seem kinda bad to me.

 

[tviceman]

If the viewing angles are bad, then it's TN.

http://youtu.be/DWXcNlh85Ps?t=30s

 

[gorobei]

do the pixels invert at extreme vertical viewing angles? if so then tn.

 

[Selenium_Glow]

I've yet to come across a Latitude with a IPS display. All latitudes (being a business oriented laptop and stuff) come with TN.

Also, this review -> http://www.notebookcheck.net/Review-Dell-Latitude-E7440-Notebook.103185.0.html

It says it has a TN panel.

 

[lehtv]

do the pixels invert at extreme vertical viewing angles? if so then tn.

That will probably only happen when looking from below, not from above. At least on my TN monitor

 

[brandonb]

See:

http://www.lagom.nl/lcd-test/viewing_angle.php

 

[KingFatty]

Set your cell phone next to the display at the same viewing angle. Then move your head around and see if the laptop screen remains as bright/clear/easily viewed as the cell phone.

 

[Barfo]

I've yet to come across a Latitude with a IPS display. All latitudes (being a business oriented laptop and stuff) come with TN.

Also, this review -> http://www.notebookcheck.net/Review-Dell-Latitude-E7440-Notebook.103185.0.html

It says it has a TN panel.

Yeah I was kinda surprised when I read some reviews stating it has an IPS. Apparently some of the screen options are IPS panels. From your link:

Update 11/20/2013: Review update E7440 (IPS FHD, 4300U, 128 GB)
We had the chance to review an E7440 with a matte Full HD IPS display (1920x1080 pixels), a Core i5-4300U and a 128 GB SSD. We added the according information in the sections Display, Processor, System Performance and Battery Runtime.

 

[Bryf50]

Alternatively download HWinfo64. Grab the model number from the Monitor section. Google the model number for information.