CN209897344U

CN209897344U - Easily fold flexible circuit board

Info

Publication number: CN209897344U
Application number: CN201920617646.2U
Authority: CN
Inventors: 高辉
Original assignee: Shenzhen BYD Electronic Components Co Ltd
Current assignee: Shenzhen Holitech Optoelectronics Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-03
Anticipated expiration: 2029-04-30

Abstract

An easily-folded flexible circuit board comprises a flexible circuit board body, branches and a folding part, wherein the branches are connected with the body through the folding part, and the width of the folding part is smaller than that of the branches, or the folding part is of a hollow structure; the utility model has the advantages of reduce the folding degree of difficulty and reduce the bounce-back dynamics after folding, cause deformation and counterpoint not accurate because of the bounce-back.

Description

Easily fold flexible circuit board

Technical Field

The utility model relates to a circuit board, in particular to flexible circuit board easily folds.

Background

Along with the development of economy and the high-speed development of electronic industry, the use amount of printed circuit boards is continuously rising, meanwhile, the printed circuit boards also enter equipment of various industries, in addition, in order to meet the requirements of small space, high density and bending, the development of flexible circuit boards also enters a rapid development time, and particularly, compared with a hard board, the flexible circuit board is used as a connecting part of an electronic product, such as a mobile phone flat cable, a liquid crystal module and the like, the flexible circuit board has the advantages of smaller volume, lighter weight, bending and flexing, three-dimensional assembly and the like.

As electronic products are increasingly miniaturized and have high-speed performance, Flexible Printed Circuits (FPCs) are increasingly used in electronic products. Because most of flexible circuit boards are used for bearing the circuit connection effect between components, most of flexible circuit boards are designed with folding, and the defects of difficult folding, rebound, deformation, inaccurate alignment and the like easily occur in the process of splicing and folding.

SUMMERY OF THE UTILITY MODEL

For solving the partial problem that exists among the prior art, the utility model provides a reduce the folding degree of difficulty and the easy folding flexible circuit board of folding back rebound dynamics.

The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be: an easily-folded flexible circuit board comprises a flexible circuit board, wherein the flexible circuit board is formed by sequentially laminating a first protective film, a first copper foil layer, a PI layer, a second copper foil layer and a second protective film; the flexible circuit board comprises a main body, a branch and a folding part, wherein the branch is connected with the main body through the folding part, and the width of the folding part is smaller than that of the branch or/and the folding part is hollow.

As right the utility model discloses an improvement, the fretwork is the fretwork folding portion department first copper foil layer, second copper foil layer or/and the PI layer.

As an improvement to the present invention, the hollow is one or more holes for reducing the area of the folded portion.

As an improvement to the utility model, the holes are square holes, round holes or/and other holes which can reduce the area of the folding part at will.

As an improvement to the present invention, the main body, the branch and the folding portion are integrally formed.

The utility model discloses owing to adopted including flexible circuit board, flexible circuit board includes main part, branch and folding portion, branch with the main part passes through the folding portion is connected, the width of folding portion is less than the width of branch, perhaps, the structure of folding portion for the fretwork. The utility model has the advantages of reduce the folding degree of difficulty and reduce the bounce-back dynamics after folding, cause deformation and counterpoint not accurate because of the bounce-back.

Drawings

Fig. 1 is a schematic structural diagram of a branch folding direction in an easily foldable flexible circuit board of the present invention.

Fig. 2 is a schematic diagram of a planar structure of the flexible printed circuit board of the present invention.

Fig. 3 is a schematic diagram of the structure layer hollowing of the flexible printed circuit board of the present invention.

Fig. 4 is a schematic diagram of the other structure layer of the flexible printed circuit board easy to fold according to the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 to 4, fig. 1 to 4 disclose an easily foldable flexible circuit board, which includes a flexible circuit board 1, wherein the flexible circuit board 1 is formed by sequentially laminating a first protective film 11, a first copper foil layer 12, a PI layer 13, a second copper foil layer 14 and a second protective film 15; the flexible circuit board 1 comprises a main body 2, a branch 3 and a folding portion 4, wherein the branch 3 is connected with the main body 2 through the folding portion 4, the width of the folding portion 4 is smaller than that of the branch 3 or/and the folding portion 4 is hollowed through etching equipment, the first copper foil layer 12 and the second copper foil layer 14 (see fig. 3) at the folding portion 4 are hollowed out, or the first copper foil layer 12, the PI layer 13 and the second copper foil layer 14 (see fig. 4) are hollowed out, and the main body 2, the branch 3 and the folding portion 4 are integrally formed.

Preferably, the cutout is one or more holes that reduce the area of the folded portion 4.

Preferably, the holes are square holes, round holes or/and any other holes that reduce the area of the fold 4.

The manufacturing principle is as follows: the first copper foil, the PI layer and the second copper foil are sequentially laminated, the first copper foil layer, the PI layer and the second copper foil layer at the position of the folding part are hollowed out by adopting an etching method, the sequentially laminated first copper foil, the PI layer and the second copper foil are wrapped by the protective film at the outer layer, and the folding strength and the rebound strength after folding are reduced by reducing the folding surface.

The above-mentioned embodiments only express two embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An easily-folded flexible circuit board comprises a flexible circuit board (1), wherein the flexible circuit board is formed by sequentially laminating a first protective film (11), a first copper foil layer (12), a PI layer (13), a second copper foil layer (14) and a second protective film (15); the method is characterized in that: the flexible circuit board (1) comprises a main body (2), branches (3) and folding parts (4), the branches (3) and the main body (2) are connected through the folding parts (4), the width of the folding parts (4) is smaller than that of the branches (3), or/and the folding parts (4) are hollow.

2. The flexible circuit board of claim 1, wherein: the hollowing is the hollowing of the first copper foil layer (12), the second copper foil layer (14) or/and the PI layer (13) at the folding part (4).

3. An easy-folding flexible circuit board according to claim 1 or 2, characterized in that: the hollowing is one or more holes which reduce the area of the folding part (4).

4. The flexible circuit board of claim 3, wherein: the holes are square holes, round holes or/and other holes which can reduce the area of the folding part (4).

5. An easy-folding flexible circuit board according to claim 1, 2 or 4, characterized in that: the main body (2), the branches (3) and the folded portion (4) are integrally formed.