Smart textile product and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-9839123-B2
Application number	US-201515503378-A
Country	US
Kind code	B2
Filing date	Sep 17, 2015
Priority date	Sep 29, 2014
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

The present disclosure relates to a smart textile product and a method for manufacturing a smart textile product. The smart textile product is provided with a flexible and/or stretchable textile fabric ( 10 ) comprising a plurality of electrically conductive threads ( 11, 12 ) and at least one rigid electronic or optoelectronic component ( 20 ) comprising at least one electrically conductive pad ( 21, 22 ), which is in electrical contact with at least one of the plurality of electrically conductive threads. The smart textile product ( 10 ) comprises an elastomeric encapsulation layer ( 31 ) in which the electrical connection ( 1, 2 ) is embedded, so as to provide a gradual transition in deformability between the flexible and/or stretchable textile fabric ( 10 ) and the at least one rigid component ( 20 ) at the location of the at least one electrical connection ( 1, 2 ).

First claim

The invention claimed is:

1. A smart textile product comprising: a flexible and/or stretchable textile fabric comprising a plurality of electrically conductive threads; at least one rigid electronic or optoelectronic component comprising at least one electrically conductive pad, the at least one electrically conductive pad being configured to be in electrical contact with at least one of the plurality of electrically conductive threads to provide at least one electrical connection between the at least one rigid electronic or optoelectronic component and the at least one of the electrically conductive threads of the flexible and/or stretchable textile fabric; and at least one elastomeric encapsulation layer, wherein the at least one electrical connection is embedded in the at least one elastomeric encapsulation layer to provide a gradual transition in deformability between the flexible and/or stretchable textile fabric and the at least one rigid component at a location of the at least one electrical connection, wherein the at least one elastomeric encapsulation layer comprises a first elastomeric encapsulation layer comprising a first elastomer and a second elastomeric encapsulation layer comprising a second elastomer different from the first elastomer.

2. The smart textile product according to claim 1 , wherein the at least one rigid electronic or optoelectronic component is at least partly embedded in the at least one encapsulation layer.

3. The smart textile product according to claim 1 , wherein the at least one electrically conductive pad is configured to be connected to the at least one electrically conductive thread by an electrically conductive material.

4. The smart textile product according to claim 3 , wherein the electrically conductive material is an adhesive material.

5. The smart textile product according to claim 3 , wherein the electrically conductive material is a solder material.

6. The smart textile product according to claim 1 , wherein the plurality of electrically conductive threads are separated by a gap.

7. The smart textile product according to claim 1 , wherein the plurality of electrically conductive threads are substantially parallel to one another.

8. The smart textile product according to claim 1 , wherein the elastomeric encapsulation layer is a silicon based material or a polydimethylsiloxane.

9. The smart textile product according to claim 1 , wherein the first elastomer is selected for optimizing a reduction of mechanical stress at the location of the at least one electrical connection and wherein the second elastomer is selected to provide protection against chemical substances, humidity or moisture.

10. The smart textile product according to claim 1 , wherein the first elastomer and the second elastomer are selected to provide a gradually increasing deformability between the rigid component and the fabric.

11. A method for fabricating a smart textile product according to claim 1 , comprising: providing a flexible and/or stretchable textile fabric comprising a plurality of electrically conductive threads; forming at least one electrical connection between the rigid electronic or optoelectronic component and at least one of the plurality of electrical conductive threads; and forming at least one elastomeric encapsulation layer at a location of the at least one electrical connection, wherein the at least one electrical connection is embedded in the at least one encapsulation layer to provide a gradual transition in deformability between the flexible and/or stretchable textile fabric and the at least one rigid electronic or optoelectronic component at the location of the at least one electrical connection.

12. The method according to claim 11 , wherein the forming the at least one elastomeric encapsulation layer comprises: providing a liquid precursor of an elastomeric material on the flexible and/or stretchable textile fabric; waiting for a predetermined period of time to allow the liquid precursor to penetrate into the flexible and/or stretchable textile fabric and to surround the at least one electrical connection; and curing the liquid precursor, thereby forming an elastomeric encapsulation layer.

13. The method according to claim 12 , wherein the liquid precursor is provided adjacent to at least one lateral edge of the rigid electronic or optoelectronic component.

14. The method according to claim 12 , wherein the providing the liquid precursor comprises covering at least partially the rigid electronic or optoelectronic component.

15. The method according to claim 12 , wherein the providing the liquid precursor comprises dispensing the liquid precursor.

16. The method according to claim 12 , wherein the providing the liquid precursor comprises: positioning a mold on the flexible and/or stretchable textile fabric; and filling the mold with the liquid precursor.

17. The method according to claim 16 , wherein the mold is positioned on the flexible and/or stretchable textile fabric such that it covers the electronic or optoelectronic component and the at least one electrical connection.

18. The method according to claim 12 , wherein the predetermined period of time is selected based on a viscosity of the liquid precursor and an absorption rate of the flexible and/or stretchable textile fabric.

19. The method according to claim 12 , wherein the forming at least one elastomeric encapsulation layer comprises forming a first elastomeric encapsulation layer comprising a first elastomer and forming a second elastomeric encapsulation layer comprising a second elastomer, wherein the first layer and the second layer are formed by: providing a first liquid precursor of a first elastomeric material on the flexible and/or stretchable textile fabric; waiting for a predetermined period of time to allow the first liquid precursor to penetrate into the flexible and/or stretchable textile fabric and to surround the at least one electrical connection; curing the liquid precursor, thereby forming the first elastomeric encapsulation layer; providing a second liquid precursor of a second elastomeric material on the flexible and/or stretchable textile fabric; waiting for a predetermined period of time to allow the second liquid precursor to penetrate into the flexible and/or stretchable textile fabric and to surround the first elastomeric encapsulation layer; and curing the second liquid precursor, thereby forming the second elastomeric encapsulation layer.

Assignees

• Imec Vzw
• Univ Gent

Inventors

• Van Keymeulen Bjorn

Classifications

• H05K2203/1316

  Moulded encapsulation of mounted components · CPC title

• H05K3/32

  electrically connecting electric components or wires to printed circuits · CPC title

• H05K2201/10977

  Encapsulated connections · CPC title

• H05K3/284

  for encapsulating mounted components (H05K1/185 takes precedence) · CPC title

• H05K1/181

  associated with surface mounted components · CPC title