Sheet connector, sheet set, electrical inspection device, and electrical inspection method

Patent metadata

Field	Value
Publication number	US-12007410-B2
Application number	US-202017778048-A
Country	US
Kind code	B2
Filing date	Nov 19, 2020
Priority date	Nov 22, 2019
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

A sheet connector according to the present invention has: a first insulating layer having a first surface positioned on one side in the thickness direction, a second surface positioned on the other side, and a plurality of first through-holes passing through between the first surface and the second surface; and a plurality of first conductive layers arranged on the inner wall surfaces of the first through-holes. First ends of the first conductive layers on the first surface side project from the first surface.

First claim

What is claimed is:

1. A sheet connector, comprising:
a first insulation layer including a first surface located on one side in a thickness direction, a second surface located on another side in the thickness direction, and a plurality of first through holes extending between the first surface and the second surface; and
a plurality of first conductive layers disposed at an inner wall surface of each of the plurality of first through holes,
wherein a first end portion of each of the plurality of first conductive layers on a first surface side is protruded than the first surface, and
wherein the first insulation layer further includes a first base material layer including the first surface and comprising a first resin composition, the first resin composition having a glass transition temperature of 120° C. or higher.

2. The sheet connector according to claim 1 , wherein a second end portion of each of the plurality of first conductive layers on a second surface side is protruded than the second surface.

3. The sheet connector according to claim 1 ,
wherein the first insulation layer further includes an adhesive layer including the second surface.

4. The sheet connector according to claim 1 ,
wherein a glass transition temperature of the first resin composition is 150° C. or higher.

5. The sheet connector according to claim 1 ,
wherein a coefficient of thermal expansion of the first resin composition is 60 ppm/K or smaller.

6. The sheet connector according to claim 1 , wherein a protruding length of the first end portion of each of the plurality of first conductive layers on the first surface side is greater than a protruding length of the second end portion of each of the plurality of first conductive layers on a second surface side.

7. The sheet connector according to claim 6 , wherein each of the protruding length of the first end portion and the protruding length of the second end portion is 1 to 7 μm.

8. A sheet connector, comprising:
a first insulation layer including a first surface located on one side in a thickness direction, a second surface located on another side in the thickness direction, and a plurality of first through holes extending between the first surface and the second surface;
a plurality of first conductive layers disposed continuously to an inner wall surface of each of the plurality of first through holes and a periphery of an opening of each of the plurality of first through holes on the first surface in each of the plurality of first through holes; and
a plurality of valley lines disposed between the plurality of first conductive layers on the first surface, and configured to insulate the plurality of first conductive layers; and
wherein the first insulation layer further includes a first base material layer including the first surface and comprising a first resin composition, the first resin composition having a glass transition temperature of 120° C. or higher.

9. The sheet connector according to claim 8 , wherein a width of each of the plurality of valley lines is greater than a thickness of each of the plurality of first conductive layers.

10. The sheet connector according to claim 8 , wherein a depth of each of the plurality of valley lines is greater than a thickness of each of the plurality of first conductive layers.

11. The sheet connector according to claim 8 ,
wherein the first insulation layer further includes an adhesive layer including the second surface.

12. The sheet connector according to claim 11 ,
wherein a probe tack value measured at 25° C. in compliance with American Society for Testing and Materials D2979:2016 of the second surface of the adhesive layer is higher than the probe tack value of the first surface of the first base material layer; and
wherein the probe tack value of the adhesive layer is 3N/5 mmφ or greater.

13. The sheet connector according to claim 8 , wherein a center-to-center distance p 1 of openings of the plurality of first through holes on the first surface side is 5 to 55 μm.

14. The sheet connector according to claim 8 ,
wherein the sheet connector is used for electrical testing of an inspection object; and
wherein the inspection object is disposed on the first surface of the sheet connector.

15. A sheet set, comprising:
the sheet connector according to claim 8 ; and
an anisotropic conductive sheet configured to be disposed on the second surface of the sheet connector,
wherein the anisotropic conductive sheet includes:
a second insulation layer including a third surface located on one side in a thickness direction and a fourth surface located on another side in the thickness direction; and
a plurality of conductive paths disposed to extend in the thickness direction in the second insulation layer and exposed to outside of the third surface and the fourth surface,

wherein the third surface of the second insulation layer of the anisotropic conductive sheet is in contact with the second surface of the first insulation layer of the sheet connector,
wherein at least a part of the plurality of conductive paths of the anisotropic conductive sheet are electrically connected with at least a part of the plurality of first conductive layers of the sheet connector, and
wherein a center-to-center distance p 1 of openings of the plurality of first through holes of the sheet connector on a first surface side is smaller than a center-to-center distance p 2 of the plurality of conductive paths of the anisotropic conductive sheet on a third surface side.

16. The sheet set according to claim 15 ,
wherein the second insulation layer further includes a plurality of second through holes extending between the third surface and the fourth surface; and
wherein the plurality of conductive paths is a plurality of second conductive layers, each of the plurality of second conductive layers being disposed continuously to an inner wall surface of each of the plurality of second through holes and a periphery of an opening of each of the plurality of second through holes on the third surface in each of the plurality of second through holes.

17. The sheet set according to claim 15 , wherein a thickness of the first insulation layer is smaller than a thickness of the second insulation layer.

18. The sheet set according to claim 15 ,
wherein the second insulation layer includes a second base material layer comprising a second resin composition; and
wherein a storage modulus of the second resin composition is lower than a storage modulus of the first resin composition.

19. An electrical testing apparatus, comprising:
an inspection substrate including a plurality of electrodes; and
a laminate of the sheet set according to claim 15 disposed on a surface of the inspection substrate where the plurality of electrodes is disposed,
wherein the anisotropic conductive sheet is disposed on the surface of the inspection substrate where the plurality of electrodes is disposed,
wherein at least a part of the plurality of the electrode of an inspection substrate are electrically connected with at least a part of the plurality of conductive paths of the anisotropic conductive sheet,
wherein the sheet connector is disposed on the third surface of the second insulation layer of the anisotropic conductive sheet, and
wherein the inspection object is disposed on the first surface of the first insulation layer of the sheet connector.

20. An electrical testing method, comprising:
stacking an inspection substrate including a plurality of electrodes a

Assignees

• Mitsui Chemicals Inc

Inventors

• Nishiura Katsunori
• Koyama Taichi
• Yamada Daisuke

Classifications

• H01R13/2414

  conductive elastomers · CPC title

• G01R1/06761

  related to layers · CPC title

• H01B5/16

  comprising conductive material in insulating or poorly conductive material, e.g. conductive rubber (H01B1/14, H01B1/20 take precedence; insulating bodies with conductive admixtures H01B17/64; conductive paints C09D5/24) · CPC title

• G01R1/073

  Multiple probes · CPC title

• G01R1/0416 Primary

  Connectors, terminals (G01R1/0425 and G01R1/0433 take precedence; with measurement function for battery poles G01R31/364) · CPC title