Screensaver (or screen saver)

11:36 Jul 1, 2020 

Hello. There are many words in Farsi that refer to different concepts. This came to my mind about شیر (milk, lion, tap):
آن یکی شیر است اندر بادیه/آن دگر شیر است اندربادیه آن یکی شیراست کآدم می‌خورد/ وآن دگر شیر است کآدم می‌خورد

08:40 Jul 1, 2020 

Hello dear colleagues. But then what do you call mobile phones' screen protectors? They are also called محافظ صفحه نمایش, aren't they?

10:38 Jun 28, 2020 

In IT, some words enter Farsi and at first there are no equivalents for them. At this step, some knowledgeable translators transliterate them and make a problem that couldn't be solved easily. I can name "computer", "keyboard", "screen", "speaker" that first were used as
کامپیوتر
کیبورد
اسکرین
اسپیکر
Fortunately and thanks to efforts of those who try to preserve Farsi, use
رایانه
صفحه‌کلید
صفحه نمایش
بلندگو
Though some illiterate people or those who want to show they are knowledgeable tend to use the first set of terms.
Fortunately nowadays we see more and more translators using the Farsi forms of these term, they use دورنگار، رایانامه، گپ instead of using فکس، ایمیل، چت.
About using
پرده بان
or
صفحه بان
My personal opinion is these terms are not widely used. There are over 30 active users who saw this question and no of them heard about these two terms, because the Academy coined these terms so late and people don't easily accept them. The term I suggested is the one we usually see on IT and Computer books.