My Samsung e590 - the screen black out today

Today (13 Oct 09) about 2pm my phone (see the above picture) suddenly the screen black out, the only thing I can see is the light of the keys.  Suddenly I felt the whole world gonna collapse because I cannot read a single incoming message and cannot even see the incoming contact.  I bought this phone because of the design that attracked me but after using it for almost a year I find the camera attached with it is not that good for my usage.  Now I have to take it for service and I hope it won't cost too much but I'll keep it because of the design is just attacked me.