Flexible substrate, flexible substrate-attached component, and manufacturing method of flexible substrate-attached component

Patent metadata

Field	Value
Publication number	US-2017339793-A1
Application number	US-201715669126-A
Country	US
Kind code	A1
Filing date	Aug 4, 2017
Priority date	Feb 12, 2015
Publication date	Nov 23, 2017
Grant date	—

Abstract

A flexible substrate has an insulating base member and a conductive layer that is formed on the base member and includes an electrical connecting portion fixed to a component and electrically connected to the component, and the flexible substrate includes: a main portion on which the electrical connecting portion is formed; and a protruding portion provided so as to protrude from a portion of the main portion in which the electrical connecting portion is formed, wherein the main portion is bent along a first bending line extending in a first direction, and wherein the protruding portion can be bent along a second bending line extending in a second direction intersecting the first direction and is adapted to reduce stress occurring at the electrical connecting portion by the protruding portion being bent along the second bending line.

First claim

What is claimed is:

1 . A flexible substrate having an insulating base member and a conductive layer that is formed on the base member and includes an electrical connecting portion fixed to a component and electrically connected to the component, the flexible substrate comprising:
a main portion on which the electrical connecting portion is formed; and a protruding portion provided so as to protrude from a portion of the main portion in which the electrical connecting portion is formed, wherein the main portion is bent along a first bending line extending in a first direction, and wherein the protruding portion can be bent along a second bending line extending in a second direction intersecting the first direction and is adapted to reduce stress occurring at the electrical connecting portion by the protruding portion being bent along the second bending line.

2 . The flexible substrate according to claim 1 ,
wherein the electrical connecting portion is located within a width of the second bending line in the main portion.

3 . The flexible substrate according to claim 2 ,
wherein the electrical connecting portion is located within the width of the second bending line and at the center of the second bending line or on a side away from the first bending line with respect to the center.

4 . A flexible substrate-attached component comprising:
a component; and a flexible substrate having an insulating base member and a conductive layer that is formed on the base member and includes an electrical connecting portion fixed to a component and electrically connected to the component, the flexible substrate comprising a main portion on which the electrical connecting portion is formed, and a protruding portion provided so as to protrude from a portion of the main portion in which the electrical connecting portion is formed, wherein the main portion is bent along a first bending line extending in a first direction, and wherein the protruding portion is bent along a second bending line extending in a second direction intersecting the first direction and is adapted to reduce stress occurring at the electrical connecting portion by the protruding portion being bent along the second bending line.

5 . The flexible substrate-attached component according to claim 4 ,
wherein the protruding portion of the flexible substrate has a fixing portion fixed to the component.

6 . The flexible substrate-attached component according to claim 5 ,
wherein the protruding portion of the flexible substrate has a plurality of the fixing portions that are continuous, and wherein the plurality of the fixing portions are fixed to different portions of the component.

7 . The flexible substrate-attached component according to claim 4 ,
wherein the main portion of the flexible substrate has a fixing portion bent toward the component side and fixed to the component.

8 . The flexible substrate-attached component according to claim 4 further comprising a restricting member which is fixed to the component and in which an opening or a notch through which the flexible substrate is inserted is provided.

9 . The flexible substrate-attached component according to claim 8 , wherein the opening or the notch has a slit-like shape.

10 . The flexible substrate-attached component according to claim 8 , wherein the flexible substrate is fixed to an inner wall of the opening or the notch.

11 . The flexible substrate-attached component according to claim 4 ,
wherein the electrical connecting portion has a land portion, and wherein the land portion is fixed to the component by a conductive fixing member and electrically connected to a wiring of the component.

12 . The flexible substrate-attached component according to claim 4 ,
wherein a through hole penetrating from one primary surface to the other primary surface of the flexible substrate in the flexible substrate, wherein the electrical connecting portion has a land portion formed around an opening of the through hole, and wherein an electrical terminal of the component is inserted through the through hole and fixed and electrically connected to the land portion by a conductive fixing member.

13 . The flexible substrate-attached component according to claim 4 ,
wherein the component has an attachment unit having a surface with which the flexible substrate contacts, and wherein the surface of the attachment unit has a portion which is closer to a bent portion of the main portion of the flexible substrate than to the electrical connecting portion and to which the main portion of the flexible substrate is fixed.

14 . A manufacturing method of a flexible substrate-attached component, the manufacturing method comprising:
preparing a flexible substrate having an insulating base member and a conductive layer that is formed on the base member and includes an electrical connecting portion fixed to a component and electrically connected to the component, the flexible substrate comprising a main portion on which the electrical connecting portion is formed, and a protruding portion provided so as to protrude from a portion of the main portion in which the electrical connecting portion is formed, wherein the main portion is bent along a first bending line extending in a first direction, and wherein the protruding portion is bent along a second bending line extending in a second direction intersecting the first direction and is adapted to reduce stress occurring at the electrical connecting portion by the protruding portion being bent along the second bending line; and fixing the electrical connecting portion of the flexible substrate to the component and attaching the flexible substrate to the component.

15 . The manufacturing method of the flexible substrate-attached component according to claim 14 ,
wherein, when the flexible substrate is attached to the component, the electrical connecting portion is fixed to the component by a conductive fixing member such that the electrical connecting portion is electrically connected to the component.

Assignees

• Furukawa Electric Co Ltd

Inventors

• Katayama Etsuji
• Miyokawa Jun
• Ariga Maiko
• Sugaya Toshio

Classifications

• H05K1/189 Primary

  characterised by the use of flexible or folded printed circuits · CPC title

• H05K3/32

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

• H05K1/181

  associated with surface mounted components · CPC title

• H05K3/40

  Forming printed elements for providing electric connections to or between printed circuits · CPC title

• H05K2201/10121

  Optical component, e.g. opto-electronic component · CPC title