My digital signage screen that I use as a monitor with an official 18/7 uptime rating has explicit temporary burn in/ghosting issues mentioned for content that is too static/persistent, and says it'll go away after a bit of rest time/waiting for the LCD to normalize. It even has an anti-burn-in mode that steps the image around+-4 pixels in both directions every few minutes to prevent any hard contrast lines from persisting and their ghosting to be notable to the customers of the facility that operates the digital signage.