Plasma-addressed colour display

Abstract

A known plasma-addressed electro-optical color display device comprises groups (G) of three pixels ( 16 ), each group (G) is constituted out of one common plasma channel ( 20 ) and a three data electrodes ( 18 ). Color filters are aligned with the data electrodes. The number of plasma channels being lower than the number of groups of data electrodes. In a plasma-addressed display device according to the invention, the group (G) of pixels ( 16 ) is constituted out of one common data electrode ( 18 ) and a group of plasma channels ( 20 ). The color filters are aligned with the plasma channels ( 20 ) of the group. In this way the number of data electrodes ( 18 ) and thus the number of connections thereto reduces by a factor equal to the number of pixels ( 16 ) in a group (G). The number of plasma channels ( 20 ) increases with the same factor, but the total number of connections decreases as the number of rows is lower than the number of groups (G) of pixels ( 16 ).

1 . A plasma-addressed colour display device comprising: 
 a layer of electro-optical material ( 42 ) sandwiched between elongated data electrodes ( 18 ) and plasma channels ( 20 ) to obtain a matrix structure of pixelelements ( 16 ), and    colour filters being associated with the pixelelements ( 16 ) for obtaining groups (G) of adjacent pixelelements ( 16 ) representing different colours enabling display of a colour picture, characterized in that the display device is adapted to comprise groups (G) of pixelelements ( 16 ) each being constituted with a common data electrode ( 18 ) cooperating with a group of plasma channels ( 20 ), the colour filters being aligned with the plasma channels ( 20 ).    
     
     
         2 . A plasma-addressed colour display device as claimed in  claim 1 , characterized in that the plasma-addressed colour display device further comprises: 
 a plasma driver circuit ( 28 ) coupled to selectively activate the plasma channels ( 20 ) in a group for selecting pixelelements ( 16 ) associated with the activated plasma channel ( 20 ), and    a data driver circuit ( 24 ) receiving a video information V, and supplying colour data signals each representing one of a group of primary colours to the common data electrode ( 18 ) one by one, wherein a colour data signal being supplied to the common data electrode ( 18 ) represents the primary colour corresponding to a colour of the colour filter of the activated plasma channel ( 20 ).    
     
     
         3 . A plasma-addressed colour display device as claimed in  claim 1  or  2 , characterized in that each plasma channel ( 20 ) comprises spaced first ( 31 ) and second ( 30 ) electrodes, the first electrodes ( 30 ) being interconnected in a number of first groups and the second electrodes ( 31 ) being interconnected in a number of second groups such that each of the first groups includes no more than one electrode of each of the second groups.