Electronic component, conductive paste, and method for manufacturing an electronic component

Patent metadata

Field	Value
Publication number	US-9786463-B2
Application number	US-201113581178-A
Country	US
Kind code	B2
Filing date	Feb 17, 2011
Priority date	Mar 23, 2010
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

The conductive paste contains the following dispersed in a binder resin dissolved in a solvent: a plurality of particles comprising aluminum and/or an aluminum-containing alloy; and an oxide-comprising powder. The oxide contains vanadium with a valence no greater than 4 and a glass phase. In the method for manufacturing an electronic component, the conductive paste is applied to a substrate and fired, forming electrode wiring. The electronic component is provided with electrode wiring that has: a plurality of particles comprising aluminum and/or an aluminum-containing alloy; and an oxide affixing the particles to a substrate. The oxide contains vanadium with a valence no greater than 4. A compound layer containing vanadium and aluminum is formed on the surfaces of the particles, and the vanadium in the compound layer includes vanadium with a valence no greater than 4. This results in an electrode wiring with high reliability and water resistance.

First claim

The invention claimed is:

1. An electronic component, comprising:
an electrode wire containing a plurality of particles formed from aluminum (Al) or a plurality of particles formed from an alloy containing aluminum, and an oxide for fixing the particles to a substrate,
wherein the oxide contains a glass phase,
wherein a chemical compound layer containing vanadium and aluminum is formed on a surface of the particles,
wherein the glass phase has a transition point lower than or equal to 290° C. and comprises vanadium, and
wherein the vanadium in the chemical compound layer and the glass phase contains vanadium atoms of different valences and at least 60 percent of the vanadium atoms have a valence of 4 or less.

2. The electronic component according to claim 1 , wherein the chemical compound layer contains an alloy phase containing aluminum and zero valent vanadium.

3. The electronic component according to claim 1 , wherein the chemical compound layer contains at least one of Al 3 V, AlV 3 , Al 0.8 Sb 1.0 V 0.2 O 4 , Al 0.5 Sb 1.0 V 0.5 O 4 , AlV 2 O 4 , AlVO 3 , VO 2 AlO 2 PO 2 , Al 0.02 V 0.98 O 2 , and Al 0.07 V 1.93 O 4 .

4. The electronic component according to claim 1 , wherein the oxide contains phosphorus (P).

5. The electronic component according to claim 1 , wherein the particles formed from an alloy containing aluminum contain at least one of silver (Ag), copper (Cu), calcium (Ca), magnesium (Mg), and silicon (Si).

6. The electronic component according to claim 1 , wherein specific resistance of the electrode wire is 1×10 −4 Ωcm or lower.

7. The electronic component according to claim 1 , wherein the oxide contains at least one of barium (Ba), tungsten (W), iron (Fe), manganese (Mn), antimony (Sb), bismuth (Bi), and tellurium (Te).

8. The electronic component according to claim 1 , wherein the electronic component is any one of a display panel, a solar battery cell, and a ceramic mounting substrate.

9. An electronic component, comprising:
an electrode wire containing a plurality of particles formed from aluminum (Al) or a plurality of particles formed from an alloy containing aluminum, and an oxide for fixing the particles to a substrate,
wherein the oxide contains vanadium (V) with a valence of 4 or less and phosphorus (P), and at least one of boron (B), tungsten (W), iron (Fe), manganese (Mn), bismuth (Bi), and tellurium (Te),
wherein the oxide contains a glass phase having a transition point lower than or equal to 290° C. and comprising vanadium, and
wherein the vanadium contained in glass phase contains vanadium atoms of different valences where at least 60 percent of the vanadium atoms in the glass phase have a valence of 4 or less.

Assignees

• Aoyagi Takuya
• Naito Takashi
• Hashiba Yuji
• Yoshimura Kei
• Tachizono Shinichi
• Hitachi Ltd
• Hitachi Chemical Co Ltd

Inventors

• Aoyagi Takuya
• Naito Takashi
• Hashiba Yuji
• Yoshimura Kei
• Tachizono Shinichi

Classifications

• H05K2201/0224

  Conductive particles having an insulating coating · CPC title

• H01J9/02

  Manufacture of electrodes or electrode systems · CPC title

• C03C8/18

  containing free metals · CPC title

• H05K1/092

  Dispersed materials, e.g. conductive pastes or inks · CPC title

• H01J2211/225

  Material of electrodes · CPC title