system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does pressing my laptop screen hard make weird ripples, whereas doing the same to my phone does not?
gpt
Two possible reasons:

1. Your phone might not have an LCD screen. An LCD screen literally contains liquid, so when you press it you move the liquid around, causing it to interact differently with the light that is shone through it. Your phone's screen might use another technology, such as OLED, which isn't affected by pressing it.

2. Your phone's screen is covered with a much stronger and thicker glass, built to sustain falls. If you press it hard enough you might also see small ripples.