Lenovo ThinkVision T27QD-40 LED Display 68.6 Cm 27 2560 X 1440 Pixels Wide Quad

The higher the number of pixels, the sharper the image. Wide Quad HD. (Used abbreviations: R/F = Rise and Fall.). A backlight is a form of illumination used in liquid crystal displays (LCDs). One type of backlight is made by LEDs, which can be either white or RGB (red green blue).