system
Given the following post, respond as if you're commenting on Reddit:
human
When a computer screen is cracked at one spot, why does the entire screen no longer work?

From what I've seen, when a computer's LCD screen cracks, all the pixels around the cracks turn completely black while everything else goes completely white. Why does that happen? Under what circumstances will a part of the screen not be effected?
gpt
Pixels turn completely white (transparent) when you switch them off. When your screen cracks a conductor that is wired in series is severed, thus pixels are powered off while background light keeps running. The black blotch is the result of messed up polarizing filter and/or pixels cracking and leaking (thus the name liquid crystal display).