Screen that opens in silence, say (7)
I believe the answer is:
shutter
'screen that opens' is the definition.
'shutter' can be an answer for 'screen' (shutter is a kind of screen). I am not sure about the rest of the definition.
'silence say' is the wordplay.
'silence' becomes 'sh' ('sh' is said to tell someone to be silent).
'say' becomes 'utter' (to utter something is to speak or say it).
'sh'+'utter'='SHUTTER'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for shutter that I've seen before include "Hinged window blind" , "camera component" , "application for Windows?" , "Moveable window screen" , "Hinged window cover" .)