direct full array 8x: get ready to be enthralled when you watch videos and movies on this 138-cm (55) samsung tv. thanks to the direct full array 8x, the backlight is finely regulated to create impeccable contrasts and optimal light so each scene feels more life-like.quantum processor 4k: this tv is powered by a quantum processor 4k which delivers captivating visuals to ensure an amazing tv-viewing experience. it uses a unique upscaling algorithm to deliver sharper images. plus, it adjusts the brightness and sound of the screen to match the scene on the tv with the ambiance of your room.quantum dot technology: every scene comes to life on this samsung tv as the quantum dot technology renders realistic colors in dark or bright scenes.quantum hdr 12x: the quantum hdr 12x enhances brightness and deepens contrast, so whether it's a scene with a sunrise or one in the pitch-black of night, every detail will be clear and spotless.ai upscaling: qled harnesses ai-powered machine learning to transform lower quality images and images with noise or lost detail into vivid and sharp content with near 4k resolution.ultra viewing angle: thanks to this feature, the light from the tv is spread uniformly through the room and light leakage is also reduced, so you can enjoy watching your favorite tv shows from anywhere in your room.one invisible connection: samsung?s one invisible connection uses just a single cable to connect your tv to various sources, including the power cable. this helps reduce the clutter of wires and enhances the aesthetic appeal of your appliance.