The phrase "displayed for" is grammatically correct and can be used in written English.
For example, "The new art exhibit was displayed for all visitors to see."
They are displayed for sale in bubbling aquariums.
Several masterpieces are displayed for the first time.
Sadly, the glories of Iraq's civilisation are displayed for a lonely few.
They will displayed for free in a gallery from this weekend.
Milford allows signs to be displayed for five days after the election.
The original work, in minuscule handwriting, was displayed for the first time.
Would you be happy to have your tax return displayed for everyone to see?
Thus the new tariffs are displayed for information but do not contribute to ranking position.
The posters – displayed, for example, on public transport – showed photographs of sad-looking children.
I extracted the right combination of bills, which I displayed for her, victorious.
In the 18th century a skull claimed as Cromwell's was displayed for money in London.
