Ghost Tech: The Persistent Displays That Time Forgot

While e-ink technology has become the gold standard for persistent, low-power displays found in everything from e-readers to supermarket price tags, it was not the only contender in the field. This exploration delves into the alternative persistent display technologies that failed to achieve ubiquity. These technologies aimed to provide similar benefits—maintaining an image without power—but faced significant challenges in manufacturing, cost, or competition from the increasingly cheap and reliable e-ink panels we see today.