Share your experience!
I have something weird in my screen.. Upper left "towards charging socket exactly".. There is a region have orange spot but it's only obviously clear at white backgrounds only.. Can anyone explain?
I'm sorry to hear this. 
It does sound like this is related to the hardware in your device. There are a few things I would recommend that you check to see if this may be caused by something software related.
If you still have this spot on your display after trying this, I would recommend that you get in contact with your Local support team for assistance with having your device sent in to an authorized service center for further troubleshooting and repair.
Let me know how it goes. 