Patent ID: 6219014
Filing Date: 2001-04-17
Classification: G01R,G08B,G09F,G09G

Abstract:
A display device comprising:a plurality of adjacent display elements, each said display element including a plurality of light emitting diodes arranged in a pattern for exhibiting, when selectively forwardly biased, a plurality of characters;a plurality of variable color background areas, equal in number to the number of said display elements, each said background area substantially surrounding one of said display elements and including a plurality of background regions, each said background region including a first light emitting diode for emitting, when forwardly biased, light signals of a first primary color, a second light emitting diode for emitting, when forwardly biased, light signals of a second primary color, and means for combining said light signals in said background region to obtain a light signal of a composite color;each said background area including a first background color control input to which said first light emitting diodes in all its background regions are commonly coupled for being forwardly biased when a color control signal is applied thereto, and a second background color control input to which said second light emitting diodes in all its background regions are commonly coupled for being forwardly biased when a color control signal is applied thereto; andmeans for coupling all said first background color control inputs and for coupling all said second background color control inputs.