Brian De Palma

Brian De Palma is an American film direction and screenwriter who is renowned for his use of split screens in many of his films, most notably in Sisters. 
He uses split screens to show two images juxtaposed next to each other, showing the same action happening at the same time but from different perspectives. 

His aim in Sisters was to use multiple images to simultaneously involve and disorientate the viewer.



He used split screens in the climatic scene of Carrie in order to create suspense for the viewer watching, and Carrie was consequently the film that made his split-screens become one of his film characteristics. The split screens used reflect Carrie's sense of madness and makes it a very disturbing and uncomfortable scene for the audience to watch.

In his later films, such as Dressed to Kill, he uses split screens to show two events happening simultaneously, which makes it seem more realistic.