CN217883959U

CN217883959U - Anti-tear FPC

Info

Publication number: CN217883959U
Application number: CN202221916158.XU
Authority: CN
Inventors: 何伟伟; 韦汇韩; 王德维; 吴伟佳
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-11-22
Anticipated expiration: 2032-07-21

Abstract

The utility model relates to a FPC technical field specifically is a tear-proof FPC. The utility model provides a FPC of tear-proof, includes FPC flexible circuit board, and the below of FPC flexible circuit board is provided with the acceptor electron spare, and FPC flexible circuit board and acceptor electron spare electricity are connected. The beneficial effects of the utility model are that: the utility model discloses a position is longer based on binding between FPC flexible circuit board and the acceptor electron spare, and the fracture or breakpoint position appear easily and are sent out the condition of tying up the both sides of location between FPC flexible circuit board and the acceptor electron spare, so bind the position both sides between FPC flexible circuit board and the acceptor electron spare and add the tensile protective layer and protect, the purpose that sets up the tensile protective layer is equivalent to and sets up twice strengthening rib between FPC flexible circuit board and acceptor electron spare, strengthen the tensile strength who binds the position both sides between FPC flexible circuit board and the acceptor electron spare, it splits to avoid binding a position both sides between FPC flexible circuit board and the acceptor electron spare, the effectual qualification rate and the production efficiency who improves the FPC subassembly.

Description

Anti-tear FPC

Technical Field

The utility model relates to a FPC technical field specifically is a tear-proof FPC.

Background

The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility, and has the characteristics of high wiring density, light weight, thin thickness and good bending property.

See patent document CN209806162U, which specifically discloses an FPC, comprising an FPC body, a bonding pad and two EMI shielding films, wherein the bonding pad is arranged on the upper surface of the FPC; the two EMI shielding films respectively cover the upper surface and the lower surface of the FPC body, and avoidance positions are arranged at the welding pads of the EMI shielding films. Further, the edge of the EMI shielding film located at the avoidance position is spaced from the edge of the pad by more than 0.5 mm. The FPC body with still be equipped with the PET membrane between the EMI shielding film, be close to avoid the position the edge of PET membrane surpasses the edge of EMI shielding film.

Although the FPC assembly provided in the patent document can optimize signal shielding and anti-interference directions, when the FPC assembly with a long binding position is produced, the condition that FPCs on two sides of the binding position are torn easily occurs, so that the qualified rate of FPC products is low, and high-efficiency production of FPC products is not facilitated.

Therefore, the utility model discloses a FPC who prevents tearing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide a tear-proof FPC and solve above-mentioned problem. Specifically, bind a position both sides and add the tensile protective layer and protect between FPC flexible circuit board and acceptor electron spare, the purpose of setting up the tensile protective layer is equivalent to set up twice strengthening rib between FPC flexible circuit board and acceptor electron spare, strengthens the tensile strength who binds a position both sides between FPC flexible circuit board and the acceptor electron spare, avoids binding a position both sides fracture between FPC flexible circuit board and the acceptor electron spare, the effectual qualification rate and the production efficiency who improves the FPC subassembly.

In order to solve the technical problem, the utility model provides a tear-proof FPC, the technical scheme who specifically realizes as follows:

the utility model provides a prevent FPC of tear, includes FPC flexible circuit board, FPC flexible circuit board's below is provided with the acceptor electron, FPC flexible circuit board with the acceptor electron electricity is connected, FPC flexible circuit board's top is provided with two tensile protective layers, two the back upper portion of tensile protective layer respectively through the adhesive with two edges and corners departments in FPC flexible circuit board lower part bond mutually, two the back lower part of tensile protective layer all through the adhesive with the acceptor electron bonds mutually.

As the utility model provides a further optimization mode of the FPC of anti-tear, FPC flexible circuit board's upper surface is provided with the sclerosis layer that a plurality of equidistance were arranged.

By adopting the structure design, the hardening layer is arranged on the FPC flexible circuit board, so that the phenomenon that the FPC flexible circuit board is forced to bend by external force to cause damage to circuits on the FPC flexible circuit board can be avoided, and the safety and the service life of the device are improved.

As the utility model provides a further optimization mode of the FPC of anti-tear, two the tensile protective layer is high strength insulating transparent material and makes.

Adopt above-mentioned structural design, the purpose that sets up the tensile protective layer of high strength is in order to further promote the tensile protective layer and tie up the tensile strength of location between FPC flexible circuit board and the acceptor electronic component, uses insulating material to make simultaneously and can avoid FPC flexible circuit board internal current to conduct and lead to the electric energy loss on the tensile protective layer.

As the utility model provides a further optimization mode of the FPC of anti-tear, two the tensile protective layer with FPC flexible circuit board's bonding width value is not less than 3mm.

By adopting the structure design, the connection length between the tensile protection layer and the FPC flexible circuit board is limited through the resistance, the probability that the tensile protection layer falls off from the FPC flexible circuit board can be reduced, and the practicability of the tensile protection layer is improved.

As the utility model provides a further optimization mode of the FPC of anti-tear, the tensile protective layer with FPC flexible circuit board's bonding width value is greater than the tensile protective layer with the bonding width value of acceptor electron spare.

Adopt above-mentioned structural design, so with the length contrast between the connection length between tensile protective layer and the FPC flexible circuit board and tensile protective layer and the acceptor electronic component to prescribe a limit to, because when dismantling or the fault replacement FPC flexible circuit board, preferentially make the tensile protective layer adhere to on the FPC flexible circuit board, reserve out the bonding space for the acceptor electronic component, conveniently utilize to change another FPC flexible circuit board and be connected with the tensile protective layer.

Compared with the prior art, the utility model discloses anti-tear FPC has following beneficial effect:

based on the position of binding between FPC flexible circuit board and the acceptor electron spare is longer, and the fracture or breakpoint position appear easily and highly send out the condition of binding the both sides of location between FPC flexible circuit board and the acceptor electron spare, so bind the position both sides between FPC flexible circuit board and the acceptor electron spare and add the tensile protective layer and protect, the purpose that sets up the tensile protective layer is equivalent to setting up twice strengthening rib between FPC flexible circuit board and the acceptor electron spare, strengthen the tensile strength of binding the position both sides between FPC flexible circuit board and the acceptor electron spare, it splits to avoid binding the position both sides between FPC flexible circuit board and the acceptor electron spare, the effectual qualification rate and the production efficiency who improves the FPC subassembly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the tear-resistant FPC of the present invention;

fig. 2 is a schematic view of the flat structure of the anti-tearing FPC of the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1. an FPC flexible circuit board; 2. a receptor electronics; 3. a tensile protection layer.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

As described in the background art, a tear resistant FPC is proposed to solve the above problems for the case where the binding positioning edge between FPC assemblies is easily cracked.

As shown in fig. 1 to 2, a tear-resistant FPC includes an FPC flexible circuit board 1, and a receptor electronic part 2 is disposed under the FPC flexible circuit board 1. The FPC flexible circuit board 1 is electrically connected with the receptor electronic part 2, two tensile protection layers 3 are arranged above the FPC flexible circuit board 1, the upper parts of the back surfaces of the two tensile protection layers 3 are respectively bonded with two edges and corners of the lower part of the FPC flexible circuit board 1 through adhesives, and the lower parts of the back surfaces of the two tensile protection layers 3 are bonded with the receptor electronic part 2 through adhesives.

Based on the position of binding between FPC flexible circuit board and the acceptor electron spare is longer, and the fracture or breakpoint position appear easily and be sent out the condition of binding the both sides of location between FPC flexible circuit board and the acceptor electron spare, so bind the position both sides between FPC flexible circuit board and the acceptor electron spare and add the tensile protective layer and protect, the purpose of setting up the tensile protective layer is equivalent to setting up twice strengthening rib between FPC flexible circuit board and acceptor electron spare, strengthen the tensile strength of binding the position both sides between FPC flexible circuit board and the acceptor electron spare, avoid binding the position both sides fracture between FPC flexible circuit board and the acceptor electron spare, the effectual qualification rate and the production efficiency who improves the FPC subassembly.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are some, not all embodiments of the invention.

Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The utility model relates to an embodiment 1 of FPC of anti-tear

As shown in fig. 1 to 2, a tear-resistant FPC includes an FPC flexible circuit board 1, and a receptor electronic part 2 is disposed under the FPC flexible circuit board 1.

The material of FPC flexible circuit board 1 can be selected from polyimide film and mylar here, but the high temperature resistance based on mylar is relatively poor, and polyimide film material has non-inflammability simultaneously, and the geometry is comparatively stable, and tear strength is stronger, has the ability of bearing welding temperature simultaneously, so preferentially adopts the polyimide film to be FPC flexible circuit board 1's preparation material in this application.

The FPC flexible circuit board 1 is electrically connected with the receptor electronic part 2, the receptor electronic part 2 is an electronic component connected with the FPC flexible circuit board 1, and comprises but is not limited to a single chip microcomputer, an intelligent control center and the like, specific functions and effects are determined according to use conditions, and the receptor electronic part 2 is not described in detail here because the specific point of the description is not in the receptor electronic part 2.

Two tensile protection layers 3 are arranged above the FPC flexible circuit board 1, the upper parts of the back surfaces of the two tensile protection layers 3 are respectively bonded with two edges and corners of the lower part of the FPC flexible circuit board 1 through adhesives, and the lower parts of the back surfaces of the two tensile protection layers 3 are bonded with the receptor electronic part 2 through adhesives.

Because the application explains how to focus on preventing the binding position edge between the FPC flexible circuit board 1 and the acceptor electronic part 2 from being torn, the tensile protection layer 3 is arranged at two lower edges and corners of the FPC flexible circuit board 1, and the tensile effect of applying the tensile protection layer 3 between the FPC flexible circuit board 1 and the acceptor electronic part 2 can be presented to the maximum.

The tensile protection layer 3 is preferably yellow transparent protection paper, so colorless transparent materials are not adopted, in order to avoid FPC flexible circuit board 1, difficult distinguishing between acceptor electron spare 2 and the tensile protection layer 3, through carrying out yellow mark to tensile protection layer 3, the staff of being convenient for seeks the position of tensile protection layer 3, set up to transparent state simultaneously and avoid tensile protection layer 3 to block the staff sight and make the staff can't observe the condition that FPC flexible circuit board 1 and acceptor electron spare 2 tie up the overall situation of location.

The utility model relates to an embodiment 2 of FPC of anti-tear

In this embodiment, as shown in fig. 1 and fig. 2, in order to further improve the structural strength to the FPC flexible circuit board 1, the upper surface of the FPC flexible circuit board 1 is provided with a plurality of hardening layers arranged at equal intervals, and by setting the hardening layers to the FPC flexible circuit board 1, it is possible to prevent the circuit above the FPC flexible circuit board 1 from being damaged due to forced bending of the FPC flexible circuit board 1 by external force, thereby improving the safety and the service life of the device.

In this embodiment, as shown in fig. 1 and fig. 2, in order to further improve the practicability of the anti-pulling protection layer 3, the two tensile protection layers 3 are made of high-strength insulating transparent materials, the purpose of the high-strength tensile protection layer 3 is to further improve the tensile strength of the tensile protection layer 3 in binding and positioning between the FPC flexible circuit board 1 and the acceptor electronic component 2, and meanwhile, the insulating material is used for manufacturing the anti-pulling protection layer so as to avoid electric energy loss caused by conduction of the current inside the FPC flexible circuit board 1 to the tensile protection layer 3.

The utility model relates to an embodiment 3 of FPC of anti-tear

In this embodiment, as shown in fig. 1 and fig. 2, in order to further improve the tensile strength between the FPC flexible circuit board 1 and the acceptor electronic component 2, the bonding width values of the two tensile protection layers 3 and the FPC flexible circuit board 1 are not less than 3mm, and the connection length between the tensile protection layer 3 and the FPC flexible circuit board 1 is defined, so that the probability that the tensile protection layer 3 falls off from the FPC flexible circuit board 1 can be reduced, and the practicability of the tensile protection layer 3 is improved.

In this embodiment, as shown in fig. 1 and fig. 2, in order to further improve the connection effect between the FPC flexible circuit board 1 and the acceptor electronic component 2, the bonding width value between the tensile protection layer 3 and the FPC flexible circuit board 1 is greater than the bonding width value between the tensile protection layer 3 and the acceptor electronic component 2, so the connection length between the tensile protection layer 3 and the FPC flexible circuit board 1 is compared with the length between the tensile protection layer 3 and the acceptor electronic component 2 for limitation, because when the FPC flexible circuit board 1 is disassembled or replaced due to a failure, the tensile protection layer 3 is preferentially attached to the FPC flexible circuit board 1, a bonding space is reserved for the acceptor electronic component 2, and the other FPC flexible circuit board 1 is conveniently replaced and connected with the tensile protection layer 3.

The utility model relates to a concrete working process of FPC of tear resistance as follows:

bind at FPC flexible circuit board 1 and acceptor electron spare 2 and connect after finishing, scribble the tie coat with two tensile protective layer 3's bottom surface, and bond two tensile protective layer 3 respectively with two edges and corners in the below of FPC flexible circuit board 1, bond two tensile protective layer 3 and acceptor electron spare 2 simultaneously, design for guaranteeing tensile effect between FPC flexible circuit board 1 and the acceptor electron spare 2 based on tensile protective layer 3, tensile protective layer 3 has higher tensile strength simultaneously, so tensile protective layer 3 can avoid binding between FPC flexible circuit board 1 and the acceptor electron spare 2 to be located the edge and is torn or the wearing and tearing by external force, the effectual qualification rate and the efficiency that improves FPC subassembly production.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields, and all the equivalent structures are within the protection scope of the present application.

Claims

1. The utility model provides a FPC of tear-proof, includes FPC flexible circuit board (1), its characterized in that, the below of FPC flexible circuit board (1) is provided with acceptor electron spare (2), FPC flexible circuit board (1) with acceptor electron spare (2) electricity is connected, the top of FPC flexible circuit board (1) is provided with two tensile protective layer (3).

2. The FPC as claimed in claim 1, wherein the two tensile protection layers (3) are bonded at their upper rear surfaces to the lower two corners of the FPC flexible circuit board (1) by adhesive.

3. The FPC as claimed in claim 2, wherein the lower back portions of both of the tensile protection layers (3) are bonded to the acceptor electronic parts (2) by an adhesive.

4. A tear resistant FPC as claimed in claim 1, wherein the upper surface of the FPC flexible circuit board (1) is provided with a plurality of equally spaced stiffening layers.

5. A tear resistant FPC as claimed in claim 1, wherein both of the tensile protection layers (3) are made of a high strength insulating transparent material.

6. A tear resistant FPC as claimed in claim 1, wherein the bond width value of the two tensile protection layers (3) to the FPC flexible circuit board (1) is not less than 3mm.

7. A tear resistant FPC as claimed in claim 1, wherein the adhesion width value of the tensile protection layer (3) to the FPC flexible circuit board (1) is greater than the adhesion width value of the tensile protection layer (3) to the acceptor electronics (2).

8. A tear resistant FPC as claimed in claim 1, wherein the FPC flexible circuit board (1) is made of polyimide film or mylar film.

9. A tear resistant FPC according to claim 8, characterized in that said FPC flexible circuit board (1) is made of polyimide film.

10. A tear resistant FPC as claimed in claim 1, wherein the adhesion width value of the tensile protection layer (3) to the FPC flexible circuit board (1) is greater than the adhesion width value of the tensile protection layer (3) to the acceptor electronics (2).