From Longman Dictionary of Contemporary Englishsplit screenˌsplit ˈscreen noun [countable] AMFAMTa method of showing different scenes or pieces of information at the same time on a film, television, or computer screen a split-screen movie
Examples from the Corpus
split screen• If I can think of one thing that makes modern software easy to use leading up to Windows it is the split screen.• Sometimes other devices, such as stand-ins, supplement the comparatively rigid limits of the split screen. 