Bean on the screen (4)
I believe the answer is:
sean
'bean on the screen' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sean that I've seen before include "Penn, Bean or O'Casey" , "Irish form of John" , "guy at Number 10 [IRISHMAN]" , "- - Connery (007)" .)