Issues with MacBook Pro 2016 screen

Hi. Does anyone know what the issue is?

After using the laptop for awhile, black stripes started to appear across the screen like 1st image (like pixel burn-in) and slowly spread to the whole screen like in the 2nd image. The laptop was still responsive as I could see the mouse movement but basically the whole screen was black.

If I put the laptop to sleep for awhile and turned it back on, the screen was back to normal but the behavior repeated itself after awhile.

Some other times, the screen stuttered and flickered and became completely black (I couldn't see anything, like the screen is off completely). I had to close the lid and opened for it to back to normal.