Plasma tube array and gas discharge tube

1. A plasma tube array, comprising:

plural light emitting tubes that each have a fluorescent layer inside thereof and are mutually lined up in parallel;

a front surface support substrate and a rear surface support substrate that holds the plural light emitting tubes between themselves;

plural display electrodes that are formed on a surface, which faces the light emitting tubes, of the front surface support substrate in the direction to cross the light emitting tubes; and

plural signal electrodes that are associated with the respective light emitting tubes and formed on a surface, which faces the light emitting tubes, of the rear surface support substrate in the direction along the light emitting tubes,

wherein the fluorescent layer of each of the light emitting tubes includes plural types of fluorescent materials emitting fluorescent lights of different colors, the fluorescent materials being disposed in sequence in the longitudinal direction of the light emitting tubes, and

wherein the display electrodes are associated with the respective fluorescent materials that are disposed in sequence in the longitudinal direction of the light emitting tubes.

2. The plasma tube array according to claim 1 , wherein the display electrodes are each formed along corresponding one of the plural types of fluorescent materials that emit in sequence fluorescent lights of different colors across the light emitting tubes.

3. The plasma tube array according to claim 1 , wherein the fluorescent layer includes fluorescent materials that are disposed in sequence to be different in size in the longitudinal direction of the light emitting tubes depending on the type of the fluorescent materials.

4. The plasma tube array according to claim 1 , comprising a support member in which plural types of fluorescent materials emitting fluorescent lights of different colors are disposed in sequence,

wherein the support member is inserted into the light emitting tube.