HP L1820 hp l1820 18'', l1720 17'', l1520 15'' lcd monitor - p4829a user's gui - Page 42

hp L1520/hp L1720/hp L1820 LCD Monitor LCD Monitor Quality and Pixel Policy for the hp L1720 Monitor LCD Monitor Quality and Pixel Policy for the hp L1720 Monitor The HP L1720 TFT monitor uses high-precision technology, manufactured according to HP standards, to guarantee trouble-free performance. Nevertheless, the display may have cosmetic imperfections that appear as small bright or dark spots. This is common to all LCD displays used in products supplied by all vendors and is not specific to the HP D5064 displays. These imperfections are caused by one or more defective pixels or sub-pixels. • A pixel consists of one red, one green, and one blue sub-pixel. • A defective whole pixel is always on (a bright spot on a dark background), or it is always off (a dark spot on a bright background). The first is the more visible of the two. • A defective sub-pixel (dot defect) is less visible than a defective whole pixel and is small and only visible on a specific background. The HP D5064 display does not have more than: • 10 total dot defects. • 7 defective red sub-pixels. • 7 defective green sub-pixels. • 7 defective blue sub-pixels. • No more than two adjacent (less than 2.5 mm edge-to-edge) and defective sub-pixels. • No more than two pairs of two adjacent defective sub-pixels. To locate defective pixels, the monitor should be viewed under normal operating conditions and in normal operating mode at a supported resolution and refresh rate, from a distance of approximately 50 cm (16 in.). HP expects that, over time, the industry will continue to improve its ability to produce displays with fewer cosmetic imperfections and HP will adjust guidelines as improvements are made. English 41