Large-scale display device

A large-scale display device comprising:

• a plurality of display units which each include a plurality of elongated plasma tubes arranged in parallel, each of the plasma tubes being filled with a discharge gas, and a plurality of pairs of display electrodes disposed outside the plasma tubes;
• wherein the display units are adjoined in a longitudinal direction of the elongated plasma tubes and respectively have adjoining portions which are offset thicknesswise from each other for prevention of contact between ends of the plasma tubes of the adjoined display units;
• wherein each plasma tube includes a first end which has a first non-display region, a second end which has a second non-display region, and a third non-display region between adjacent two pair of display electrodes,
• wherein a length D1 of the first non-display region, a length D2 of the second non-display region, and a length D3 of the third non-display region being defined as follows;
• D1≦D3<D2,
• wherein the adjoined display units overlap each other to respectively have overlap portions and the first ends of the plasma tubes of a display unit overlap the second ends of the plasma tubes of another adjacent display unit.

A large-scale display device comprising:

• a plurality of display modules each of which include a plurality of plasma tubes extending in a column direction and arranged in a row direction parallel to each other, a plurality of pairs of display electrodes extending parallel to each other perpendicularly to the plasma tubes, and a plurality of address electrodes extending parallel to each other along the plasma tubes;
• wherein the display modules are arranged in a matrix and are supported by a support member so that the display modules aligned in the row direction of the matrix adjoin each other with no step therebetween and the display modules aligned in the column direction of the matrix adjoin each other with a step therebetween;
• wherein each plasma tube includes a first end which has a first non-display region, a second end which has a second non-display region, and a third non-display region between adjacent two pair of display electrodes,
• wherein a length D1 of the first non-display region, a length D2 of the second non-display region, and a length D3 of the third non-display region being defined as follows;
• D1≦D3<D2,
• wherein the first ends of the plasma tubes of a display module overlap the second ends of the plasma tubes of another adjacent display module in the column direction.