EP0265212A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electroconductive particles and electroconductive adhesive containing said particles
Assignee: JSR Corp
•
Filing: 1987-10-19
•
Granted: —
•
Expires: 2007-10-19
Abstract
Abstract Electroconductive particles having substantially uniform particle diameters, which are obtained by forming a thin metal layer on the surface of each of fine polymer particles having such a narrow particle diameter distribution that at least 80% by weight of the polymer particles have particle diameters falling within a range of 0.9Sn to 1.1Sn wherein Sn is defined as the number average particle diameter of the polymer particles, as well as an electroconductive adhesive consisting essentially of (a) said electroconductive particles and (b) an electrically insulating adhesive material. Use of this electroconductive adhesive makes it possible to obtain good, anisotropic, electric connection.
Inventors
- 👤 Kiyoshi Kasai
- 👤 Masaji Watanabe
- 👤 Masayuki Hattori
- 👤 Hiroshi Tadenuma
- 👤 Masahiro Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 20:49
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; C; C09; C09J; C09J201/00; H01R; H01R4/00; H01R4/04; H05; H05K; H05K13/00; H05K13/04; H05K13/046; H05K13/0469; H05K3/00; H05K3/30; H05K3/32; H05K3/321; H05K3/323; H05K1/00; H05K1/18; H05K1/181; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0221; H05K2201/023; H05K2201/0233; H05K2201/0263; H05K2201/0266; H05K3/36; H05K3/361; H10; H10W; H10W72/00; H10W72/30; H10W72/321; H10W72/325; H10W72/351; H10W72/352
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
67 words
Electroconductive particles having substantially uniform particle diameters, which are obtained by forming a thin metal layer on the surface of each of fine polymer particles having such a narrow particle diameter distribution that at least 80% by weight of the polymer particles have particle diameters falling within a range of 0.9Sn to 1.1Sn wherein Sn is defined as the number average particle diameter of the polymer particles.
Claim 2
Dependent Claim
67 words
Electroconductive particles having substantially uniform particle diameters, which are obtained by forming a thin metal layer on the surface of each of fine polymer particles having such a narrow particle diameter distribution that at least 80% by weight of the polymer particles have particle diameters falling within a range of 0.9Sn to 1.1Sn wherein Sn is defined as the number average particle diameter of the polymer particles.
Claim 3
Dependent Claim
35 words
Electroconductive particles according to Claim 1, wherein the polymer particles are produced by allowing seed polymer particles to absorb a highly oleophilic substance, then adding at least one monomer thereto and subsequently polymerizing the monomer.
Claim 4
Dependent Claim
16 words
Electroconductive particles according to Claim 1, wherein the thin metal layer is formed by electroless plating.
Claim 5
Dependent Claim
22 words
Electroconductive particles according to Claim 1, wherein the number average particle diameter Sn of the polymer particles is 1 to 50 µm.
Claim 6
Dependent Claim
19 words
Electroconductive particles according to Claim 1, wherein the thin metal layer has a thickness of 0.01 to 2 µm.
Claim 7
Dependent Claim
81 words
An electroconductive adhesive consisting essentially of (a) electroconductive particles having substantially uniform particle diameters, which are obtained by forming a thin metal layer on the surface of each of fine polymer particles having such a narrow particle diameter distribution that at least 80% by weight of the polymer particles have particle diameters falling within a range of 0.9Sn to 1.1Sn wherein Sn is defined as the number average particle diameter of the polymer particles and (b) an electrically insulating adhesive material.
Claim 8
Dependent Claim
81 words
An electroconductive adhesive consisting essentially of (a) electroconductive particles having substantially uniform particle diameters, which are obtained by forming a thin metal layer on the surface of each of fine polymer particles having such a narrow particle diameter distribution that at least 80% by weight of the polymer particles have particle diameters falling within a range of 0.9Sn to 1.1Sn wherein Sn is defined as the number average particle diameter of the polymer particles and (b) an electrically insulating adhesive material.
Claim 9
Dependent Claim
27 words
An electroconductive adhesive according to Claim 6, wherein the electroconductive particles (a) are fine, spherical particles having a number average particle diameter of 2 to 30 µm.
Claim 10
Dependent Claim
29 words
An electroconductive adhesive according to Claim 6 or 7, wherein the thin metal layer of each of the electroconductive particles (a) has a thickness of 0.01 to 2 µm.
Claim 11
Dependent Claim
44 words
An electroconductive adhesive according to Claim 6, 7 or 8, wherein the polymer particles constituting the electroconductive particles (a) are produced by allowing seed polymer particles to absorb a highly oleophilic substance, then adding at least one monomer thereto and subsequently polymerizing the monomer.
Claim 12
Dependent Claim
29 words
An electroconductive adhesive according to any one of Claims 6 to 9, wherein the thin metal layer of each of the electroconductive particles (a) is formed by electroless plating.
Claim 13
Dependent Claim
31 words
An electroconductive adhesive according to any one of Claims 6 to 10, wherein the electrically insulating adhesive material (b) is selected from thermoplastic resins, thermosetting resins and materials for radiation-curable resins.
Claim 14
Dependent Claim
35 words
An electroconductive adhesive according to any one of Claims 6 to 11, wherein the electroconductive particles (a) are used in an amount of 0.1 to 20% by volume based on the volume of the adhesive.
Claim 15
Dependent Claim
28 words
An electroconductive adhesive according to any one of C laims 6 to 12, wherein the electroconductive particles (a) are uniformly dispersed in the electrically insulating adhesive material (b).
Claim 16
Dependent Claim
28 words
An electroconductive adhesive according to any one of C laims 6 to 12, wherein the electroconductive particles (a) are uniformly dispersed in the electrically insulating adhesive material (b).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.