Nope. You'll need to thieve a screen from another DS phat.
I had this problem awhile back searing for screens for my old Phat. After finding that I would have to take screens from another Phat, I decided to just kinda give up due to the sheer amount of work that would be required to take apart one Phat to salvage what you need, and then to take apart your normal Phat to put the replacement part(s) in and hope you don't mess up.
Edit: You'll have to salvage the screen from another DS Phat. Nobody manufactures replacement screens for the Phat due to what is literally no demand.