Patent ID: 8119035

Claim:
A conductive pattern forming ink for forming a conductive pattern on a substrate by a droplet discharge method, comprising: metal particles; an aqueous dispersion medium in which the metal particles are dispersed; erythritol; and a polyglycerol compound having a polyglycerol skeleton, wherein H shown in the following formula (I) is 0.15 to 0.80; H = OH ⁡ ( A ) Mw ⁡ ( A ) ⁢ X ⁡ ( A ) + OH ⁡ ( B ) Mw ⁡ ( B ) ⁢ X ⁡ ( B ) Formula ⁢ ⁢ ( I ) wherein OH(A) represents an average number of hydroxyl groups in one molecule of the polyglycerol compound, Mw(A) represents a weight-average molecular weight of the polyglycerol compound, X(A) represents a content of the polyglycerol compound in the conductive pattern forming ink in weight percent; and OH(B) represents a number of hydroxyl groups in one molecule of the erythritol, Mw(B) represents a molecular weight of the erythritol, and X(B) represents a content of the erythritol in the conductive pattern forming ink in weight percent.