OLEDS work by electrifying certain material that makes them glow red, green and blue light to create a TV image. This makes OLED TVs thinner, lighter, more efficient and better performing than any television technology.
Each pixel can be controlled for any absolute black giving OLED an actual infinite contrast ratio. The resolution at 3840 pixels by 2160 pixels, has been dubbed “4k” or “Ultra HD”. They produce a crisper, more colorful, and more vibrant to most people.
Another thing that makes the OLED stand out is it’s extremely energy efficiency.
OLED TVs have been on the market since 2012, and some manufactures have tackled the OLED technology since it started. Samsung and LG used to produce OLED but Samsung dropped out because of the cost and expenses in production costs. While still on OLED it must be mentioned that there are very expensive and that’s the main reason why the still very rare.
LG UNVEILED A FLEXIBLE PAPER-THIN TV

OLED Technology allowed LG to produce a paper thin TV that not only bends around corners and curve around walls but also virtually impossible to break. The company managed to achieve the paper thin material by using OLED technology, since OLED technology doesn’t need a backlight to produce light this allowed them to reach the 4-mm thickness.
The screen also offers a brighter, clearer picture than current LCD screens, with high definition of 1200 x 810. The dual sided OLED video wall only needs a magnet on the wall to attach it and can be rolled up to a radius of 3 cm like a newspaper.