Backlight Problem with Macbook Pro Late-2016 - Covering my entire bottom window

Hi,

I have got a problem with my Macbook Pro Late-2016. I have been using this mac since February, 2018. 

Suddenly, a few months ago, the black light started covering my entire bottom window but it only appears 1 Hour after using this mac. If i want to get it disappear, i need to wait for around 4-5 hours before using it back :(

This how it looks like:

First Hour of Usage

Few hours later...

I tried to reset NVRAM / SCM but nothing. Anybody knows how can I get this fixed?

Thank you