초록

An LED color display matrix has first and second sets of LED lamps of first and second nominal color respectively. The actual colors of the lamps of the first set are not the same and this color mismatch is corrected for using the lamps of the second set.

대표청구항 ▼

[ What is claimed is:] [1.]1. A display system having a display matrix and comprising:first LED-light sources within said matrix each for generating light of a first nominal color and each having a neighboring second LED-light source that is for generating light of a second nominal color, said first

[ What is claimed is:] [1.]1. A display system having a display matrix and comprising:first LED-light sources within said matrix each for generating light of a first nominal color and each having a neighboring second LED-light source that is for generating light of a second nominal color, said first LED-light sources having differing actual colors of light generated;memory associated with each of said first LED-light sources storing first information that is dependent on the actual color of light generated by the first LED-light source;a control system comprising drivers for energising said first and second LED-light sources and arranged so that when display light of said first nominal color is required from any given one of said first LED-light sources the display light of that source is modified by a chance of the light from its said neighboring second LED-light source, said change of light being dependent on said first information for the first LED-light source and on the amount of said required display light; andsaid change of light serving to reduce apparent color mismatches in said matrix caused by said differing actual colors.