GoKawiil4K explained: how display resolution naming evolved from 720p to Ultra HD
The article traces how display resolution terminology evolved, noting that '4K' refers to roughly 4,000 horizontal pixels while related terms like Ultra HD, 2160p, and QHD (1440p) describe similar or adjacent resolutions using different naming conventions. It also clarifies older terms like HD (720p), Full HD (1080p), and the difference between interlaced and progressive scanning.