| Dead pixels are a fact of life because the manufacturing process is so complex. Dead Pixels can’t be eliminated without making LCD screens, and therefore notebook, prohibitively expensive. A single pixel is made up of three elements or sub-pixels, one of each primary colour – red, green and blue. When all three fail you have a dead or unlit pixel, which is visible as a tiny dot on the screen. When all three elements stay lit you see a white dot. When just one element stays you see a dot of that colour, such as red. These types are all commonly called blown or unlit pixels, although only a white dot is truly a lit pixel. Lit pixels show up on a black background, and unlit ones on a white background. Problem pixels seem worse on lower resolution screens because the pixels are bigger. |