CN220023185U

CN220023185U - Connection structure of display module flexible circuit board

Info

Publication number: CN220023185U
Application number: CN202320928415.XU
Authority: CN
Inventors: 林荣利; 杨海涛; 郑怀玺; 樊劼
Original assignee: Xinli Photoelectric Renshou Co Ltd
Current assignee: Xinli Photoelectric Renshou Co Ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-11-14
Anticipated expiration: 2033-04-23

Abstract

The utility model provides a connection structure of a display module flexible circuit board, which comprises a main screen FPC main body and a backlight FPC main body, wherein a connection part is arranged between the main screen FPC main body and the backlight FPC main body; the connecting portion comprises a first connecting piece arranged on the main screen FPC main body and a second connecting piece arranged on the backlight FPC main body, and a conductive bonding piece is arranged between the second connecting piece and the first connecting piece. According to the utility model, through the connecting part, the first connecting piece and the second connecting piece are bonded together by the conductive bonding piece in the connecting part, so that the connection of the main screen FPC main body and the backlight FPC main body is realized, the dispensing height of the conductive bonding piece is controllable, no pollution steam is generated, the conductive bonding piece is friendly to staff and environment, the problem of cold soldering of soldering tin is solved, the connection is stable and reliable, the insulating protection paper is cancelled, and the conductive bonding piece is beneficial to use.

Description

Connection structure of display module flexible circuit board

Technical Field

The utility model relates to the technical field of FPC connection, in particular to a connection structure of a flexible circuit board of a display module.

Background

At present, the display module flexible circuit board of the mobile phone display module is connected in a soldering manner, so that the problems of cold joint and exceeding soldering tin height are easy to exist, and tin vapor is easy to be absorbed when staff performs soldering tin, so that the physical health is influenced. Tin itself is also great to the environment to the welding position needs to paste an insulating adhesive tape additional to protect the welding position, avoids welding position and cell-phone casing contact to cause the short circuit, is unfavorable for the use.

For example: chinese utility model patent: CN202120051532.3, disclosed as "welding jig", specification of which discloses: when an LCM welding jig in the prior art is used for welding, a backlight FPC and an LCDFPC need to be manually pressed, a protective structure is lacked, LCDFPC components are easy to touch, rosin and tin slag are easy to splash to a component area during welding, and the LCDFPC components are damaged; the above patent can be used to demonstrate the drawbacks of the prior art.

Therefore, we make an improvement to this and propose a connection structure of a flexible circuit board of a display module.

Disclosure of Invention

The utility model aims at: the FPC is connected through soldering tin mode to present, easily has the rosin joint, the problem that soldering tin height exceeds standard.

In order to achieve the above object, the present utility model provides the following technical solutions:

the connection structure of the flexible circuit board of the display module is used for improving the problems.

The utility model is specifically as follows:

the backlight FPC comprises a main screen FPC body and a backlight FPC body, wherein a connecting part is arranged between the main screen FPC body and the backlight FPC body;

the connecting portion comprises a first connecting piece arranged on the main screen FPC main body and a second connecting piece arranged on the backlight FPC main body, and a conductive bonding piece is arranged between the second connecting piece and the first connecting piece.

As a preferable technical scheme of the utility model, the first connecting piece comprises a plurality of first copper exposing areas, and the plurality of first copper exposing areas are all arranged on the front surface of the main screen FPC main body.

As a preferable technical scheme of the utility model, the second connecting piece comprises a plurality of second copper exposing areas, and the plurality of second copper exposing areas are all arranged on the back surface of the backlight FPC main body.

As a preferable technical scheme of the utility model, the positions of the plurality of first copper exposing areas respectively correspond to the positions of the plurality of second copper exposing areas.

As a preferable technical scheme of the utility model, the conductive adhesive piece comprises a plurality of conductive adhesives, and the plurality of conductive adhesives are respectively adhered between the plurality of first copper exposing areas and the plurality of second copper exposing areas.

As a preferable technical scheme of the utility model, the front surface of the main screen FPC main body is provided with a first bending region and a second bending region which are positioned below the backlight FPC main body, and the second bending region is positioned below the first bending region.

As a preferable technical scheme of the utility model, the front surface of the main screen FPC main body is also provided with an EMI layer, and the EMI layer is positioned between the first bending region and the second bending region.

As the preferable technical scheme of the utility model, the front surface of the main screen FPC main body is fixedly connected with a reinforcing plate, and the reinforcing plate is positioned below the second bending area.

As a preferable technical scheme of the utility model, two-dimensional codes are arranged on the front surface of the EMI layer, and the two-dimensional codes are arranged in a silk-screen mode.

As a preferable technical scheme of the utility model, the front surface of the backlight FPC main body is provided with a second pair of bit lines, the front surface of the main screen FPC main body is provided with two first pairs of bit lines, the two first pairs of bit lines are respectively positioned at two sides of the backlight FPC main body, and the positions of the first pairs of bit lines correspond to the positions of the second pairs of bit lines.

Compared with the prior art, the utility model has the beneficial effects that:

in the scheme of the utility model:

through the connecting portion that sets up, electrically conductive bonding spare in the connecting portion bonds first connecting piece and second connecting piece together, realizes the connection of main screen FPC main part and back light FPC main part, and the point of electrically conductive bonding spare glues highly controllable, does not produce contaminated steam, to staff, environmental protection, does not have the cold joint problem of soldering tin more, connects reliable and stable, cancels insulating protection paper, does benefit to the use.

Drawings

Fig. 1 is a schematic structural diagram of a connection structure of a flexible circuit board of a display module provided by the utility model;

fig. 2 is a schematic diagram of a partial structure of a connection structure of a flexible circuit board of a display module according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure shown in FIG. 2A according to the present utility model;

fig. 4 is a schematic diagram of a rear view structure of the backlight FPC body provided by the present utility model.

The figures indicate:

1. a main screen FPC main body; 2. a backlight FPC main body; 301. a first copper exposure area; 302. a second copper exposure area; 303. conducting resin; 4. a first pair of bit lines; 5. a second pair of bit lines; 6. a two-dimensional code; 7. an EMI layer; 8. a first inflection region; 9. a second inflection region; 10. and a reinforcing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of some embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Example 1:

as shown in fig. 1 and 2, the present embodiment provides a connection structure of a flexible circuit board of a display module, including a main screen FPC body 1 and a backlight FPC body 2, wherein a connection portion is provided between the main screen FPC body 1 and the backlight FPC body 2;

the connecting portion is including setting up the first connecting piece on main screen FPC main part 1 and setting up the second connecting piece on being shaded FPC main part 2, be provided with electrically conductive bonding piece between second connecting piece and the first connecting piece, through the connecting portion that sets up, electrically conductive bonding piece in the connecting portion bonds first connecting piece and second connecting piece together, realize main screen FPC main part 1 and being shaded FPC main part 2's connection, electrically conductive bonding piece's some glue highly controllable, do not produce contaminated steam, to staff, environmental protection, do not have the rosin joint problem of soldering tin more, connect reliable and stable, cancel insulating protection paper, do benefit to the use.

As shown in fig. 3, as a preferred embodiment, in addition to the above manner, the first connector further includes a plurality of first copper exposure areas 301, and the plurality of first copper exposure areas 301 are all disposed on the front surface of the main screen FPC body 1.

As shown in fig. 4, as a preferred embodiment, based on the above manner, the second connector further includes a plurality of second copper exposing areas 302, and the plurality of second copper exposing areas 302 are all disposed on the back surface of the backlight FPC body 2, and the area of the first copper exposing area 301 is larger than the area of the second copper exposing area 302, so as to better glue and connect the second copper exposing area 302 and the first copper exposing area 301.

As shown in fig. 3 and 4, in the above manner, further, the positions of the plurality of first copper exposure regions 301 respectively correspond to the positions of the plurality of second copper exposure regions 302.

As shown in fig. 3 and fig. 4, as a preferred embodiment, further, the conductive adhesive member includes a plurality of conductive adhesives 303, and the plurality of conductive adhesives 303 are respectively adhered between the plurality of first exposed copper areas 301 and the plurality of second exposed copper areas 302, and the dispensing area of the conductive adhesives 303 is smaller than the area of the second exposed copper areas 302, so that the conductive adhesives 303 can be leveled after the backlight FPC body 2 is pressed.

As shown in fig. 1, as a preferred embodiment, further, on the basis of the above manner, the front surface of the main screen FPC body 1 is provided with a first bending region 8 and a second bending region 9 located below the backlight FPC body 2, and the second bending region 9 is located below the first bending region 8, and the first bending region 8 and the second bending region 9 are arranged to facilitate bending the main screen FPC body 1.

As shown in fig. 1, as a preferred embodiment, on the basis of the above manner, the front surface of the main screen FPC body 1 is further provided with an EMI layer 7, and the EMI layer 7 is located between the first bending region 8 and the second bending region 9, so that the EMI layer 7 can improve the electromagnetic interference resistance of the main screen FPC body 1.

Example 2:

the scheme of example 1 is further described in conjunction with the specific operation described below:

As shown in fig. 1, in addition to the above embodiment, a reinforcing plate 10 is fixedly connected to the front surface of the main screen FPC body 1, and the main screen FPC body 1 can be reinforced by providing the reinforcing plate 10 below the second bending region 9 with the reinforcing plate 10.

As shown in fig. 1, as a preferred embodiment, on the basis of the above manner, two-dimensional codes 6 are further disposed on the front surface of the EMI layer 7, the two-dimensional codes 6 are disposed in a silk-screen manner, and the two-dimensional codes 6 are disposed so as to trace back the main screen FPC body 1 and the backlight FPC body 2.

Example 3:

the schemes of examples 1 and 2 are further described below in conjunction with specific modes of operation, as described below:

As shown in fig. 1, as a preferred embodiment, on the basis of the above manner, further, the front surface of the backlight FPC body 2 is provided with the second pair of bit lines 5, the front surface of the main screen FPC body 1 is provided with two first pair of bit lines 4, the two first pair of bit lines 4 are respectively located at two sides of the backlight FPC body 2, the positions of the first pair of bit lines 4 correspond to the positions of the second pair of bit lines 5, the first pair of bit lines 4 and the second pair of bit lines 5 can be made in a silk-screen manner or a copper wire manufacturing manner, and the first pair of bit lines 4 and the second pair of bit lines 5 are arranged for aligning with the backlight FPC body 2, so that the positions of the main screen FPC body 1 and the backlight FPC body 2 are determined to have no offset and rotation.

Specifically, this connection structure of display module assembly flexible circuit board is during operation/during the use: the conductive adhesive 303 is first dispensed on the first exposed copper area 301, and then the second exposed copper area 302 is adhered on the first exposed copper area 301, so that the connection between the main screen FPC main body 1 and the backlight FPC main body 2 can be completed.

The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail in the present specification with reference to the above embodiments, the present utility model is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present utility model; all technical solutions and modifications thereof that do not depart from the spirit and scope of the utility model are intended to be included in the scope of the appended claims.

Claims

1. The connection structure of the flexible circuit board of the display module, including main screen FPC body (1) and back light FPC body (2), characterized by, there are connecting portions between FPC body (1) and back light FPC body (2) of said main screen;

the connecting part comprises a first connecting piece arranged on the main screen FPC main body (1) and a second connecting piece arranged on the backlight FPC main body (2), and a conductive bonding piece is arranged between the second connecting piece and the first connecting piece.

2. The connection structure of a flexible circuit board of a display module according to claim 1, wherein the first connection member includes a plurality of first copper exposure areas (301), and the plurality of first copper exposure areas (301) are all disposed on the front surface of the main screen FPC body (1).

3. The connection structure of a flexible circuit board of a display module according to claim 2, wherein the second connection member includes a plurality of second copper exposure areas (302), and the plurality of second copper exposure areas (302) are all disposed on the back surface of the backlight FPC body (2).

4. A connection structure of a flexible circuit board of a display module according to claim 3, wherein the positions of the first copper exposing areas (301) respectively correspond to the positions of the second copper exposing areas (302).

5. The connection structure of a flexible circuit board of a display module according to claim 4, wherein the conductive adhesive member comprises a plurality of conductive adhesives (303), and the plurality of conductive adhesives (303) are respectively adhered between the plurality of first copper exposing areas (301) and the plurality of second copper exposing areas (302).

6. The connection structure of a flexible circuit board of a display module according to claim 5, wherein a first bending area (8) and a second bending area (9) are disposed on the front surface of the main screen FPC body (1) and located below the backlight FPC body (2), and the second bending area (9) is located below the first bending area (8).

7. The connection structure of a flexible circuit board of a display module according to claim 6, wherein the front surface of the main screen FPC body (1) is further provided with an EMI layer (7), and the EMI layer (7) is located between the first bending region (8) and the second bending region (9).

8. The connection structure of a flexible circuit board of a display module according to claim 7, wherein a reinforcing plate (10) is fixedly connected to the front surface of the main screen FPC body (1), and the reinforcing plate (10) is located below the second bending region (9).

9. The connection structure of the display module flexible circuit board according to claim 8, wherein two-dimensional codes (6) are arranged on the front surface of the EMI layer (7), and the two-dimensional codes (6) are arranged in a silk-screen mode.

10. The connection structure of a flexible circuit board of a display module according to claim 9, wherein a second pair of bit lines (5) is disposed on the front surface of the backlight FPC main body (2), two first pairs of bit lines (4) are disposed on the front surface of the main screen FPC main body (1), the two first pairs of bit lines (4) are located on two sides of the backlight FPC main body (2) respectively, and the positions of the first pairs of bit lines (4) correspond to the positions of the second pairs of bit lines (5).