What causes these moving horizontal lines on display?

I’m assuming the issue is caused by a damaged display and that I would need to replace the display assembly to resolve the issue, but I thought I would ask about it on here to see if it might be related to something more specific. Note that the horizontal lines in the pictures are separated into 6 columns of equal width, covering the width of the display, and they are constantly jiggling around. They are mostly pink and light blue / green. The right-most column of lines is less dense. Any advice is appreciated, thank you!