Higher screen resolution

Hi,
I have just connected my laptop to a 1080p tv, when i did that it also changed the resolution of my laptop from 1600x900 to 1920x1080,
So it must be possible to get a higher resolution i am just wondering how,
if anyone has any ideas please let me know
Thanks
Rob

All displays have a definitive range of resolutions it can display, you'll get a warning when you try over/under those limits. Check your manual what those limits are.