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Flexible wiring board

A wiring board, stretchable technology, applied in the direction of dielectric properties, elastic polymer dielectric, circuit bendable/stretchable parts, etc., can solve the problems affecting the operating voltage of electronic devices, reducing the action, etc., to achieve The effects of suppressing the decrease in operability, suppressing elongation, and suppressing the increase in resistance value

Inactive Publication Date: 2019-11-26
THE FUJIKURA CABLE WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a case, for example, when the electronic device is mounted on the stretchable wiring board and operated, the operating voltage of the electronic device may be affected, and the operability may be significantly reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0032] figure 1 It is a plan view showing the stretchable wiring board 1 according to the first embodiment of the present invention, figure 2 yes figure 1 The A-A' line sectional view. in addition, image 3 It is a flowchart showing the manufacturing process of the stretchable wiring board 1 .

[0033] Such as figure 1 with figure 2 As shown, the stretchable wiring board 1 according to the first embodiment includes a stretchable base material 10 and a plurality of first stretchable wirings 20 and second stretchable wirings arranged side by side on the stretchable base material 10 . Line 30. In addition, the stretchable wiring board 1 includes a hardly stretchable member 40 that overlaps, for example, the region where the first stretchable wiring 20 is formed in its thickness direction in plan view of the stretchable base material 10 . . Furthermore, the stretchable wiring board 1 includes a stretchable insulating layer 50 formed to cover, for example, the wiring port...

no. 2 approach

[0065] Figure 4 It is a plan view showing the stretchable wiring board 1A according to the second embodiment of the present invention, Figure 5 yes Figure 4 The B-B' line sectional view. exist Figure 4 with Figure 5 , for the first embodiment ( Figure 1 ~ Figure 2 ) The same constituent elements are marked with the same reference signs, and repeated explanations are omitted below.

[0066] Such as Figure 4 with Figure 5 As shown, in the stretchable wiring board 1A according to the second embodiment, the hardly stretchable member 40 is not provided in the region where the electrode terminal portion 22 of the first stretchable wiring 20 is formed. In addition, the hard-to-stretch member 40 is not provided in the portion between the stretchable base material 10 and the wiring portion 21 . In these two points, the stretchable wiring board 1A of the second embodiment is different from the stretchable wiring board 1 of the first embodiment.

[0067]That is, in the s...

no. 3 approach

[0069] Image 6 It is a plan view showing the stretchable wiring board 1B according to the third embodiment of the present invention, Figure 7 yes Image 6 The C-C' line section view. exist Image 6 with Figure 7 , for the second embodiment ( Figure 4 ~ Figure 5 ) The same constituent elements are marked with the same reference signs, and repeated explanations are omitted below.

[0070] Such as Image 6 with Figure 7 As shown, in the stretchable wiring board 1B according to the third embodiment, the hard-to-stretch member 40 only overlaps with the formation region of the wiring portion 21 of the first stretchable wiring 20 in the thickness direction in plan view. , does not overlap with the formation region of the electrode terminal portion 22, which is the same as the stretchable wiring board 1A of the second embodiment.

[0071] However, in the stretchable wiring board 1B according to the third embodiment, the hardly stretchable member 40 is formed on the surfac...

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PUM

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Abstract

A stretchable wiring board includes: a stretchable base; at least one stretchable wiring provided on the stretchable base; and a poorly stretchable member provided so as to overlap at least part of the stretchable wiring in a thickness direction looking at the stretchable base in planar view. The poorly stretchable member suppresses change in a resistance value of the stretchable wiring associated with stretching deformation of the stretchable base. As a result, stable operability can be secured without affecting an operating voltage of an electronic component.

Description

technical field [0001] The present invention relates to a stretchable wiring board on which stretchable wiring is formed, and more particularly, to a stretchable wiring board capable of reducing a desired change in resistance value of the stretchable wiring accompanying stretching deformation of the substrate. Background technique [0002] In recent years, stretchable wiring boards capable of expanding and contracting on a curved surface or flat surface have been developed. As one type of such a stretchable wiring board, for example, a flexible electrode structure is known (see Patent Document 1 below). This flexible electrode structure includes a dielectric film made of an elastomer, and a flexible electrode that is arranged on the surface of the dielectric film and expands and contracts according to elastic deformation of the dielectric film. The flexible electrode is composed of an elastomer base material and a conductive material dispersed in the base material. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H01B5/14H05K3/24
CPCH05K1/0283H05K1/0393H05K3/285H05K3/287H05K2201/0133H05K2201/0187H05K2201/09227H01B5/14H05K1/02H05K3/24H05K1/118H05K3/1283H05K3/28H05K2201/0162
Inventor 小椋真悟
Owner THE FUJIKURA CABLE WORKS LTD
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