An OLED monitor uses Organic Light Emitting Diodes to produce images. Unlike traditional LCD monitors, which rely on a backlight, each pixel in an OLED display emits its own light. This allows for deeper blacks and more vibrant colors, enhancing the overall picture quality. Additionally, OLED monitors offer faster response times and wider viewing angles compared to other display technologies. They are commonly used in high-end televisions and gaming monitors, making them popular among professionals and enthusiasts who prioritize visual performance and accuracy.