Conductive paste and electronic part equipped with electrode wiring formed from same

A conductive paste comprising:

• conductive glass particles containing transition metals and phosphorus;
• metal particles selected from the group consisting of copper, aluminum, a copper based alloy, and an aluminum based alloy;
• a binder resin;
• a solvent;
• and
• none of the substances prohibited by the RoHS directive,
• wherein:
• each of the transition metals contained in the conductive glass particles is present in the state of having a plurality of oxidation numbers;
• and
• the proportion of the atoms that have the largest oxidation number for each of the transition metals satisfies a relationship expressed by the following equation (1):
• 0.86
• ≥
• {
• V
• 5
• +
• }
• +
• {
• W
• 6
• +
• }
• +
• {
• Mo
• 6
• +
• }
• +
• {
• Fe
• 3
• +
• }
• +
• {
• Mn
• 4
• +
• }
• {
• V
• }
• +
• {
• W
• }
• +
• {
• Mo
• }
• +
• {
• Fe
• }
• +
• {
• Mn
• }
• >
• 0.5
• .
• Eq
• .
• ⁢
• (
• 1
• )

An electronic part equipped with electrode wiring, the electrode wiring comprising:

• a conductive glass phase containing transition metals and phosphorus;
• metal particles selected from the group consisting of copper, aluminum, a copper based alloy, and an aluminum based alloy;
• and
• none of the substances prohibited by the RoHS directive,
• wherein:
• each of the transition metals contained in the conductive glass phase is present in the state of having a plurality of oxidation numbers;
• and
• the proportion of the atoms that have the largest oxidation number for each of the transition metals satisfies a relationship expressed by the following equation (1):
• {
• V
• 5
• +
• }
• +
• {
• W
• 6
• +
• }
• +
• {
• Mo
• 6
• +
• }
• +
• {
• Fe
• 3
• +
• }
• +
• {
• Mn
• 4
• +
• }
• {
• V
• }
• +
• {
• W
• }
• +
• {
• Mo
• }
• +
• {
• Fe
• }
• +
• {
• Mn
• }
• >
• 0.5
• ;
• Eq
• .
• ⁢
• (
• 1
• )
• the conductive glass phase contains 0 to 5 percent by mass of TeO2 and 0 to 3 percent by mass of MnO2;
• and
• the metal particles consist of a first group of particles about 95% by volume of which having a particle size in the range of not less than 0.5 and less than or equal to 0.86 μm and less than 1.5 μm and a second group of particles about 95% by volume of which having a particle size in the range of not less than 1.5 μm and less than 8 μm.

A conductive paste comprising:

• conductive glass particles containing transition metals and phosphorus;
• metal particles selected from the group consisting of copper, aluminum, a copper based alloy, and an aluminum based alloy;
• a binder resin;
• a solvent;
• and
• none of the substances prohibited by the RoHS directive,
• wherein:
• each of the transition metals contained in the conductive glass particles is present in the state of having a plurality of oxidation numbers;
• and
• the proportion of the atoms that have the largest oxidation number for each of the transition metals satisfies a relationship expressed by the following equation (1):
• {V5+}+{W6+}+{Mo6+}+{Fe3+}+{Mn4+}/{V}+{W}+{Mo}+{Fe}+{Mn}>0.5 Eq. (1);
• the conductive glass phase contains 0 to 5 percent by mass of TeO2 and 0 to 3 percent by mass of MnO2;
• and
• the metal particles consist of a first group of particles about 95% by volume of which having a particle size in the range of not less than 0.5 and less than or equal to 0.86 μm and less than 1.5 μm and a second group of particles about 95% by volume of which having a particle size in the range of not less than 1.5 μm and less than 8 μm.