I have two laptops and I want to add screen of another laptop to my laptop. So that I will be having a wider space to see my stuffs I believe there must be some software/technique to meet my requirement.
Consumer laptops only have a video out port, never video in. However their is a software synergy that you can use to share the same keyboard and mouse but it can not make them as a one big screen. So the short answer is no it won't work.