Why i see this image on screen?

The phone was working very well. Yesterday before i went sleep, i had connected it with charger(like i always do) and there was nothing to worry about. But when i woke up today, i saw this on screen. I can't do anything with the phone, can't even turn it off(the only way is to disconnect the lower part which contains battery). When i'm turning on the phone, after LG logo, this image is showing up immediately. I discharged/unloaded the phone, but it didn't help. This image remained after i connected it with charger again. Idk what is the problem. Can any of Chinese/Korean/Japanese (idk what language it is) translate? PLS!!!! And any ideas how to fix??? The model is LG G5 SE and it is original, bought 5 months ago...