Low profile electrical interposer of woven structure and method of making same

• US 8,367,942 B2
• Filed: 10/27/2009
• Issued: 02/05/2013
• Est. Priority Date: 10/27/2009
• Status: Expired due to Fees

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Howell, David Gregory, Ma, Hao-Yun
• Primary Examiner(s): Estrada, Angel R
• Assistant Examiner(s): LOPEZ CRUZ, DIMARY S
• Application Number:
  US12/589,719
• Publication Number:
  US 20110094785A1
• Time in Patent Office: 1,197 Days
• Field of Search: 174/255, 174/260, 174/261, 174/117.M, 442/110, 442/117
• US Class Current: 174/261
• CPC Class Codes: D03D 1/0088 Fabrics having an electronic function
• CPC Class Codes: D03D 15/283 synthetic polymer-based, e.g. polyamide or polyester fibres cellulose-based artificial fibres D03D15/225
• CPC Class Codes: D10B 2401/16 antistatic; conductive
• CPC Class Codes: H01R 12/714 with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
• CPC Class Codes: H01R 13/6467 by cross-over of signal conductors
• CPC Class Codes: H01R 43/007 for elastomeric connecting elements
• CPC Class Codes: H05K 2201/0133 Elastomeric or compliant polymer
• CPC Class Codes: H05K 2201/029 Woven fibrous reinforcement or textile
• CPC Class Codes: H05K 2201/10378 Interposers
• CPC Class Codes: H05K 3/325 by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor adaptations of leads inserted in holes for press-fit connections H05K3/308
• CPC Class Codes: H05K 7/1053 having interior leads
• CPC Class Codes: Y10T 29/49217 by elastic joining
• CPC Class Codes: Y10T 442/2418 Coating or impregnation increases electrical conductivity or anti-static quality
• CPC Class Codes: Y10T 442/2475 Coating or impregnation is electrical insulation-providing, -improving, or -increasing, or conductivity-reducing

Abstract

An electrical interposer for connecting two electronic devices includes a plurality of first cores with undulating structure extending in a first direction and a plurality of second cores with undulating structure extending in a second direction angular with the first direction. Each first core has first peaks and first valleys alternately arranged in the first direction and each first peak is electrically connected with a corresponding neighboring first valley but insulated from others. Each second core has second peaks and second valleys alternately arranged in the second direction and each second peak is electrically connected with a corresponding neighboring second valley but insulated from others. The first cores and the second cores interlace with each other to reach a woven structure with the first peaks and the second peaks jointly constituting an upper interface, and the first valleys and the second valleys jointly constituting a lower interface.

Claims

1. An electrical interposer for connecting two electronic devices, comprising:

a plurality of first insulating cores with undulating structure extending in a first direction, each first core having first peaks and first valleys alternately arranged in the first direction, each of the first peaks being electrically connected with a corresponding neighboring first valley through conductive member on the outer surface of the first insulating cores but said first peaks being insulated from each other; and

a plurality of second insulating cores with undulating structure extending in a second direction angular with the first direction, each second core having second peaks and second valleys alternately arranged in the second direction;

each of the second peaks being electrically connected with a corresponding neighboring second valley through conductive member on the outer surface of the second insulating cores but said second peaks being insulated from each other;

wherein the first cores and the second cores interlace with each other to reach a woven structure with the first peaks and the second peaks jointly constituting an upper interface, and the first valleys and the second valleys jointly constituting a lower interface.

2. The electrical interposer as claimed in claim 1, wherein the first cores and the second cores are perpendicular to each other.

3. The electrical interposer as claimed in claim 1, wherein the first or the second peak is electrically connected with neighboring valley by a conductive layer plated on the outer surface of the first or second core.

4. The electrical interposer as claimed in claim 1, wherein the first and second cores are made of elastomeric material.

5. The electrical interposer as claimed in claim 1, wherein the first and second cores have substantially identical configuration.

6. The electrical interposer as claimed in claim 1, wherein the upper interface and the lower interface are connected with the electronic devices respectively in a manner of LGA (Land Grid Array).

9. The electrical interposer as claimed in claim 1, wherein the first peak is higher than the first valley and an electrical path is established on the outer surface of each of the cores between said first peak and said first valley.

10. The electrical interposer as claimed in claim 9, wherein the second peak is higher than the second valley and an electrical path is established on the outer surface of each of the cores between said first peak and said first valley.

7. An electrical interposer, comprising:

a plurality of first insulative wires extending from a first direction;

a plurality of second insulative wires extending from a second direction orthogonal to the first direction and interlaced with the first insulative wires creating a plurality of first peak and valley along the first direction and a plurality of second peak and valley along the second direction;

wherein an outer surface of the first peak of the first wire and an outer surface of the second valley of the second wire are electrically connected with each other to be configured as a first contact, and an outer surface of the first valley of the first wire and an outer surface of the second peak of the second wire are electrically connected with each other to be configured as a second contact.

8. The electrical interposer as claimed in claim 7, wherein the first peak and valley and the second peak and valley are each plated with a conductive layer while neighboring peak and valley in same wire are isolated from each other.

11. The electrical interposer as claimed in claim 7, wherein the out surface of the first peak of the first wire and the out surface of the second valley of the second wire are electrically connected with each other, and the first valley of the first wire and the second peak of the second wire are electrically connected with each other.

12. The electrical interposer as claimed in claim 7, wherein the first peak, the first valley, the first peak and the second peak are coated with a conductive layer on the outer surface of the first or second core.