Conductive Compositions For Low Temperature Assembly Of Electronic Components
AssigneeOrmet Circuits, Inc.
InventorsYANRONG SHI, SHENGYI LI, MATTHEW WROSCH, CATHERINE SHEARER
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Abstract
To provide a composition for electromagnetic wave shield capable of forming a sintered compact for electromagnetic wave shield excellent in electromagnetic wave shield effect. SOLUTION: A composition for electromagnetic wave shield includes: a metal particle A, a metal particle B with a lower fusion point than the metal particle A; a metal particle C which includes a metal composition contained in the metal particle B and is an alloy particle with a lower fusion point than the metal particle B; and resin. Between the metal particle A, the metal particle B and the metal particle C, transient liquid phase sintering is possible.
Claims26
A particle mixture composition comprising:
- a) between about 1 mass % and about 10 mass % of Type 1A particles that are liquid at a temperature T1, the Type 1A particles comprising at least one Reagent A;
- b) between about 50 mass % and about 80 mass % of Type 1B particles that are liquid at a temperature between T1 and T1 plus 100° C., the Type 1B particles comprising at least one Reagent A;
- c) between about 5 mass % and about 45 mass % of Type 2 particles comprising at least one Reagent B;
- and
- d) an organic vehicle;
- wherein Reagent A and Reagent B are metals, and wherein either Type 1A, or Type 1B, or both Type 1A and Type 1B particles may further comprise at least one Facilitator element.
A particle mixture composition comprising:
- a) Type 1A particles that are liquid at a temperature T1, comprising at least one Reagent A;
- b) Type 1B particles that are liquid at a temperature between T1 and T1 plus 100° C., comprising at least one Reagent A;
- c) Type 2 particles comprising at least one Reagent B;
- and
- d) an organic vehicle;
- wherein Reagent A and Reagent B are metals, and wherein either Type 1A, or Type 1B, or both Type 1A and Type 1B particles may further comprise at least one Facilitator element,
- and wherein a weight ratio of Type 1A particles to Type 1B particles is between about 1:20 and about 1:2.
Dependencies are inferred from the claim text.