US4740657A — Anisotropic-electroconductive adhesive compositio…

Claim 1

Independent Claim 67 words

An adhesive composition for connecting conductors and capable of exhibiting anisotropic-electroconductivity by applying pressure or pressure with heating comprising 0.1 to 15% by volume of electroconductive particles and 99.9 to 85% by volume of an electrically insulating adhesive component, each electroconductive particle comprising a polymeric material as a core, material and an electrically conductive thin metallic layer coated on almost the whole surface of said core material.

Claim 2

Dependent Claim 67 words

An adhesive composition for connecting conductors and capable of exhibiting anisotropic-electroconductivity by applying pressure or pressure with heating comprising 0.1 to 15% by volume of electroconductive particles and 99.9 to 85% by volume of an electrically insulating adhesive component, each electroconductive particle comprising a polymeric material as a core, material and an electrically conductive thin metallic layer coated on almost the whole surface of said core material.

Claim 3

Dependent Claim 76 words

An adhesive composition according to claim 1, wherein the electroconductive particles have an aspect ratio of 0.05 to 1.0 and an average particle size (diameter) of 0.5 to 300 μm, and the ratio of the thermal expansion coefficient of the adhesive component to that of the core material being 0.1/1 to 10/1 and the ratio of the modulus of elasticity in tension of the adhesive component to that of the core material being 1.2/1 to 0.01/1.

Claim 4

Dependent Claim 23 words

An adhesive composition according to claim 1, wherein the core material has plastic deformation properties under a pressure or a pressure with heating.

Claim 5

Dependent Claim 26 words

An adhesive composition according to claim 2, wherein the core material has a thermal expansion coefficient of 20×10 -5 (1/° C.) to 2×10 -5 (1/° C.).

Claim 6

Dependent Claim 34 words

An adhesive composition according to claim 2, wherein the thickness of the metal thin layer is 0.01 to 5 μm and 1/5 to 1/1000 of the average particle size diameter of the electroconductive particles.

Claim 7

Dependent Claim 14 words

An adhesive composition according to claim 2, wherein the adhesive component has heat-sensitive adhesiveness.

Claim 8

Dependent Claim 14 words

An adhesive composition according to claim 2, wherein the adhesive component has pressure-sensitive adhesiveness.

Claim 9

Dependent Claim 30 words

An adhesive composition according to claim 2, wherein the adhesive component is at least one material selected from the group consisting of a heat curing type and a photocuring type.

Claim 10

Dependent Claim 67 words

An adhesive film for connecting conductors and capable of exhibiting anisotropic-electroconductivity by applying pressure or pressure with heating comprising 0.1 to 15% by volume of electroconductive particles and 99.9 to 85% by volume of an electrically insulating adhesive component, each electroconductive particle comprising a polymeric material as a core material and an electrically conductive this metallic layer coated on almost the whole surface of said core material.

Claim 11

Dependent Claim 67 words

An adhesive film for connecting conductors and capable of exhibiting anisotropic-electroconductivity by applying pressure or pressure with heating comprising 0.1 to 15% by volume of electroconductive particles and 99.9 to 85% by volume of an electrically insulating adhesive component, each electroconductive particle comprising a polymeric material as a core material and an electrically conductive this metallic layer coated on almost the whole surface of said core material.

Claim 12

Dependent Claim 76 words

An adhesive film according to claim 9, wherein the electroconductive particles have an aspect ratio of 0.05 to 1.0 and an average particle size (diameter) of 0.5 to 300 μm, and the ratio of the thermal expansion coefficient of the adhesive component to that of the core material being 0.5/1 to 10/1 and the ratio of the modulus of elasticity in tension of the adhesive component to that of the core material being 1.2/1 to 0.01/1.

Claim 13

Dependent Claim 23 words

An adhesive film according to claim 10, wherein the core material has plastic deformation properties under a pressure or a pressure with heating.

Claim 14

Dependent Claim 26 words

An adhesive film according to claim 10, wherein the core material has a thermal expansion coefficient of 20×10 -5 (1/° C.) to 2×10 -5 (1/° C.).

Claim 15

Dependent Claim 34 words

An adhesive film according to claim 10, wherein the thickness of the metal thin layer is 0.1 to 1.0 μm and 1/5 to 1/1000 of the average particle size diameter of the electroconductive particles.

Claim 16

Dependent Claim 14 words

An adhesive film according to claim 10, wherein the adhesive component has heat-sensitive adhesiveness.

Claim 17

Dependent Claim 14 words

An adhesive film according to claim 10, wherein the adhesive component has pressure-sensitive adhesiveness.

Claim 18

Dependent Claim 30 words

An adhesive film according to claim 10, wherein the adhesive component is at least one material selected from the group consisting of a heat curing type and a photocuring type.

Claim 19

Dependent Claim 19 words

A adhesive film according to claim 10, wherein the adhesive film has a thickness of 1 to 300 μm.

Claim 20

Dependent Claim 20 words

A adhesive film according to claim 10, wherein the adhesive film has a total light transmittance of 40% or more.

Claim 21

Independent Claim 132 words

A method for connecting conductors which comprises interposing an adhesive composition or an adhesive film capable of exhibiting anisotropic-electro-conductivity by applying pressure or pressure with heating comprising 0.1 to 15% by volume of electroconductive particles, each electroconductive particle comprising a polymeric material as a core material and an electrically conductive thin metallic layer coated on almost the whole surface of said core material, said electroconductive particles being dispersed in 99.9 to 85% by volume of an adhesive component, between electrode conductors standing opposite to each other, and pressing without heating or pressing with heating said conductors so as to make the thickness of the adhesive layer between the conductors in the range of 0.02 to 0.95 of the initial thickness so as to provide electrical connection and mechanical bonding between the conductors.

Claim 22

Independent Claim 132 words

A method for connecting conductors which comprises interposing an adhesive composition or an adhesive film capable of exhibiting anisotropic-electro-conductivity by applying pressure or pressure with heating comprising 0.1 to 15% by volume of electroconductive particles, each electroconductive particle comprising a polymeric material as a core material and an electrically conductive thin metallic layer coated on almost the whole surface of said core material, said electroconductive particles being dispersed in 99.9 to 85% by volume of an adhesive component, between electrode conductors standing opposite to each other, and pressing without heating or pressing with heating said conductors so as to make the thickness of the adhesive layer between the conductors in the range of 0.02 to 0.95 of the initial thickness so as to provide electrical connection and mechanical bonding between the conductors.

Claim 23

Dependent Claim 75 words

A method according to claim 19, wherein the electroconductive particles have an aspect ratio of 0.05 to 1.0 and an average particle size (diameter) of 0.5 to 300 μm, and a ratio of the thermal expansion coefficient of the adhesive component to that of the core material being 0.5/1 to 10/1 and a ratio of the modulus of elasticity in tension of the adhesive component to that of the core material being 1.2/1 to 0.01/1.

Claim 24

Dependent Claim 32 words

A method according to claim 19, wherein a conductor connection portion is crosslinked and cured with heating and/or light irradiation at the time of connection of conductors and/or after connection of conductors.

Claim 25

Dependent Claim 92 words

A connected conductor structure comprising conductors standing opposite to each other and connecting materials connecting said conductors electrically, said connecting materials comprising 0.1 to 15% by volume of electroconductive particles and 99.9 to 85% by volume of an electrically insulating adhesive component, each electroconductive particle comprising a polymeric material as a core material and an electrically conductive thin metallic layer coated on almost the whole surface of said core material, and said electroconductive particles being fixed between the conductors standing opposite to each other in a deformed state pressed by the conductors.

Claim 26

Dependent Claim 92 words

A connected conductor structure comprising conductors standing opposite to each other and connecting materials connecting said conductors electrically, said connecting materials comprising 0.1 to 15% by volume of electroconductive particles and 99.9 to 85% by volume of an electrically insulating adhesive component, each electroconductive particle comprising a polymeric material as a core material and an electrically conductive thin metallic layer coated on almost the whole surface of said core material, and said electroconductive particles being fixed between the conductors standing opposite to each other in a deformed state pressed by the conductors.

Claim 27

Dependent Claim 77 words

A connected conductor structure according to claim 22, wherein the electroconductive particles have an aspect ratio of 0.05 to 1.0 and an average particle size (diameter) of 0.5 to 300 μm, and a ratio of the thermal expansion coefficient of the adhesive component to that of the core material being 0.5/1 to 10/1 and a ratio of the modulus of elasticity in tension of the adhesive component to that of the core material being 1.2/1 to 0.01/1.

Claim 28

Dependent Claim 23 words

A connected conductor structure according to claim 22, wherein at least one conductor standing opposite to each other is a transparent electroconductive film.

Claim 29

Dependent Claim 29 words

A connected conductor structure according to claim 22, wherein said connecting material further comprises highly rigid spacer particles which can control the distance between the conductors to be connected.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-04-26	1991-10-26	1992-04-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-04-26	1995-10-26	1996-04-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-04-26	1999-10-26	2000-04-26	$7700.00	Window Closed / Lapsed

Anisotropic-electroconductive adhesive composition, method for connecting circuits using the same, and connected circuit structure thus obtained

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