Here is the actual screen I am using, purchased through a different vendor: http://www.dx.com/p/open-smart-2-0-touch-screen-expension-board-w-touch-pen-for-arduino-450742#.WswGo5MpA0N
But the vendor i got it from has pictures of the board with a different driver IC number, and the board i actually received has a third different driver IC number (st7775), and I believe the last number to be the one which is most likely available (though I'm not sure from where).