Yellowish patches on MacBook Pro 2016 display

Similar issue in another thread. The display are yellowish (side) and blueish (middle) areas. The dark orange on the right side is associated with heat I believe. It always appear after I took it from my backpack (with right side down in the backpack). If I put it in my backpack with left side down, the dark orange will appear on the left side. If the laptop is cool (not in use for a long time), then the patches will not appear. After using for a while, the patches will fade, but screen-wide yellowish areas will not.

The technical support from Apple gave me two suggestions. One is to do System Management Controller (SMC) reset, the other is to generate a new account in my computer and use that account. Neither of them worked. I believe it is the hardware problem. I wonder whether it's due to the pressure put on the screen in my backpack, which caused the damage of some parts of the display.