Android Brightness Failure or Error on Samsung Note 10.1

A

AC Question

I have a SMP601 (Samsung Galaxy Note 10.1 (2014 Edition)).
The cause, I downloaded an apk from a game developer, then after I got home, my one of the edge corner of the screen went black (like burnt). Then, I restart my phone and suddenly I can't adjust my brightness. I also can't turn the display on after I lock my screen (whenever the display gone black, you have to restart the phone to turn the display on).

I have tried restarting it several times, didn't work.
I have tried factory reset (via power + volume down), didn't work.
any idea guys ?
 

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