Plasma display panel and substrate for plasma display panel

A substrate for a plasma display panel comprising:

• a) a transparent substrate;
• b) at least one pair of electrodes made of opaque conductive silver (Ag), formed by applying and sintering a paste of said silver, and arranged on the side of one main surface of said transparent substrate, each electrode having a base portion and a projecting portion which is coupled with said base portion and projects from said base portion along said main surface, each of said projecting portions including:
• 1) a first portion coupled with said base portion to extend in a projecting direction of said projecting portion, and
• 2) a second portion coupled with an end of said first portion separated from said base portion;
• and
• c) an underlayer arranged between said transparent substrate and said electrodes, in contact with said electrodes, and formed of a transparent dielectric substance formed at a temperature below the softening point of said transparent substrate;
• wherein said second portions of said projecting portions of said electrodes face each other to form a discharge gap between said projecting portions;
• wherein said at least one pair of electrodes includes a plurality of pairs of electrodes arranged at a prescribed pitch in a projecting direction of said projecting portion, and
• b<(p−g−115)/2.42
• wherein:
• p (μm) represents said prescribed pitch, and
• b (μm) and g (em) represent respective lengths of said projecting portion and of said discharge gap in said projecting direction.