How do I clean the LCD on this TV?

How do I clean the LCD on this TV?

How do I clean the LCD on this TV? I have a black spot inside of the LCD and it's driving me crazy.

ANSWERS:

@jetsfan I would strongly suggest that you don’t. You would have to totally disassemble your TV and the LCD panel to get to either the backlight LED or the mark on the diffuser sheet. For now I would suggest that you learn to live with it. If it gets worse you can always go that route but for now it is way to risky