My Evo 3D screen start to have a mild blinking now. Anyone knows why it is blinking on its own?

Also when I off the phone and just by placing the battery back (without turning the phone on), the screen have mild light at the bottom corner of the screen.

And when I on the phone again the brightness of the screen is not even. Bright at one corner and a bit dark on the other corner,

I hope someone here can help to explain whether my LCD screen kaput already?