Resistor compositions using a Cu-containing glass frit
AssigneeE. I. Du Pont de Nemours and Company
InventorsKeiichiro Hayakawa, Jerome David Smith, Yuko Ogata, Marc H. Labranche, Kenneth Warren Hang
Life of this patent
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Abstract
This invention relates to a composition using a ruthenium oxide and/or a polynary ruthenium oxide as conducting components and using a Cu containing glass frit.
Claims14
A thick-film resistor paste composition including a resistor composition dispersed in an organic vehicle, said resistor composition comprising:
- (a) a conductive composition comprising ruthenium oxide and ruthenium pyrochlore oxide;
- and
- (b) at least a first and a second glass frit, wherein said first glass frit comprises copper, wherein said first glass frit comprises:
- (i) 5-15 wt % B2O3, (ii) 40-55 wt % SiO2, (iii) 15-35 wt % of an oxide selected from the group consisting of BaO, CaO, ZnO, SrO, and combinations thereof;
- and wherein (iv) said copper is 2-8 wt % CuO, (v) Ta2O5 is 2-8 wt % and (vi) an oxide selected from the group consisting of Na2O, K2O, Li2O and combinations thereof is 1-8 wt %, and optionally including any of (vii) ZrO2 0-6 wt % and (viii) 0-8 wt % Al2O3, based upon the weight of said first glass frit.
A thick-film resistor paste composition including a resistor composition dispersed in an organic vehicle, said resistor composition comprising:
- (a) a conductive composition comprising ruthenium oxide and ruthenium pyrochlore oxide;
- and
- (b) at least a first and a second glass frit, wherein said first glass frit comprises copper,
- wherein said first glass frit comprises:
- (i) 5-36 wt % B2O3, (ii) 23-54 wt % SiO2, (iii) an oxide selected from the group consisting of 6-54 wt % BaO, CaO, 2-13 wt % ZnO, 0.5-5.0 wt % SrO, and combinations thereof;
- and wherein (iv) said copper is 1-9 wt % CuO, (v) Ta2O5 is 0.3-7 wt % and (vi) an oxide selected from the group consisting of 0.5-6.0 wt % Na2O, 0.3-8.0 wt % K2O, Li2O and combinations thereof, and (vi)2-7 wt % Al2O3, based upon the weight of said first glass frit.
A thick-film resistor paste composition including a resistor composition dispersed in an organic vehicle, said resistor composition comprising:
- (a) a conductive composition comprising ruthenium oxide and optionally ruthenium pyrochlore oxide;
- and
- (b) at least a first and a second glass frit, wherein said first glass frit comprises copper,
- wherein said first glass frit comprises:
- (i) 5-15 wt % B2O3, (ii) 40-55 wt % SiO2, (iii)15-35 wt % of an oxide selected from the group consisting of BaO, CaO, ZnO, SrO, and combinations thereof;
- and wherein (iv) said copper is 2-8 wt % CuO, (v) Ta2O5 is 2-8 wt % and (vi) an oxide selected from the group consisting of Na2O, K2O, Li2O and combinations thereof is 1-8 wt %, and optionally including any of (vii) ZrO2 0-6 wt % and (viii)0-8 wt % Al2O3, based upon the weight of said first glass frit.
A thick-film resistor paste composition including a resistor composition dispersed in an organic vehicle, said resistor composition comprising:
- (a) a conductive composition comprising ruthenium oxide and optionally ruthenium pyrochlore oxide;
- and
- (b) at least a first and a second glass frit, wherein said first glass frit comprises copper,
- wherein said first glass frit comprises:
- (i) 5-36 wt % B2O3, (ii) 23-54 wt % SiO2, (iii) an oxide selected from the group consisting of 6-54 wt % BaO, CaO, 2-13 wt % ZnO, 0.5-5.0 wt % SrO, and combinations thereof;
- and wherein (iv) said copper is 1-9 wt % CuO, (v) Ta2O5 is 0.3-7 wt % and (vi) an oxide selected from the group consisting of 0.5-6.0 wt % Na2O, 0.3-8.0 wt % K2O, Li2O and combinations thereof, and (vi)2-7 wt % Al2O3, based upon the weight of said first glass frit.
Dependencies are inferred from the claim text.