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2160p is an alternative name for 4K UHD, a resolution supported by UHDTV products and which offers four times the definition of 1080p.[1] The number 2160 stands for a display resolution which has 2160 pixels along the shortest side, while the letter p stands for progressive scan or non-interlaced. In a progressive image, the lines of resolution of the image go from the top of the screen to the bottom.[2] The only planned higher definition format for television is 8K UHD.[3]
QuadHD or QHD are in fact only 1440p not this higher 2160p (UHD) standard. Quad HD is four times the resolution of HD or 'HD Ready' (720p),[6] whereas UHD is four times the resolution of Full HD (1080p).[7]
