iPad Air 2 backlight bleeding problem

Hi, everyone,

I dropped my iPad Air 2 (warranty expired) with my case from 50cm height, then my screen bleed some lights. there is no any crack, touch screen and other functions are functional.

I heard iPad Air 2 has a unibody screen, if change screen would cost more than 1000+ RM, then its not really make sense. Why not buy a new one, you know.

I wonder Is this necessary to change the whole screen? or just connector problem?