Flat display panel assembly

A flat display panel assembly comprising:

• an evacuated glass envelope having a faceplate;
• a source of electron beams;
• an electrode assembly including a plurality of electrode substrates, each of which has a plurality of electrode holes formed therein in a predetermined pattern to allow the electron beams to pass therethrough;
• mounting means for mounting said plurality of electrode substrates in a vertically spaced apart stacked relationship such that said electrode substrates are horizontally movable relative to one another in such a manner as to allow for thermal expansion of said electrode substrates relative to one another;
• a plurality of anodes, formed of phosphor material deposited as stripes along said faceplate, which correspond with respective ones of said plurality of electrode holes formed in said electrode substrates;
• wherein at least one of said plurality of electrode substrates is formed of a material having a coefficient of thermal expansion different than remaining ones of said plurality of electrode substrates, such that said at least one of said plurality of electrode substrates expands horizontally to a different degree than said remaining ones of said plurality of electrode substrates upon an increase in the temperature of said plurality of electrodes;
• and
• wherein said electrode holes of said at least one of said plurality of electrode substrates are arranged so as to be offset relative to corresponding electrode holes of said remaining ones of said plurality of electrode substrates by a distance which increases as a distance away from a predetermined horizontal location increases.