Screen has black/dead pixels and line across screen.

My iphone is still under its one year warranty. I can not recall any drops or it ever being handled roughly, however I have a black/gray blob of dead pixels in the left corner and my screen has a shiny line that looks like a crack of the LCD, however the glass screen is not cracked in any way that I can tell. I think the dead pixels are spreading as well. Has this happened to anyone else? Does anyone know if this is under warranty? I live over an hour and a half from the nearest apple store so I really don't want to take a special trip to see a genius only to find out that I will have to pay $200 to get this fixed. Any help/advice would be greatly appreciated!