I've got an X1 carbon that developed bad pixels. (Anecdata I know, but I've never had an Apple device, out of more tha na dozen over a decade, with a bad screen, while every Lenovo machine I've ever had, five now, has some level of bad Q&A with the screen, usually backlight bleed.) They replaced the panel on-site, which was good, but not the bezel (which is a sticker and is now peeling off slightly from having been peeled off and reattached).