CN209358833U

CN209358833U - Flexible circuit board structure, display screen and electronic equipment

Info

Publication number: CN209358833U
Application number: CN201821394814.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Fujian Huajiacai Co Ltd
Current assignee: Fujian Huajiacai Co Ltd
Priority date: 2018-08-28
Filing date: 2018-08-28
Publication date: 2019-09-06
Anticipated expiration: 2028-08-28

Abstract

The utility model discloses a kind of flexible circuit board structure, display screen and electronic equipment, the flexible circuit board includes first substrate, the second substrate, the first pin is provided on first substrate, second pin is provided in the second substrate, first pin is electrically connected by anisotropic conductive film with second pin, one end of first pin is provided with bubbles escape structure, one end of first pin is connect with bubbles escape structure, the bubbles escape structure protrudes the first substrate surface, the height and width of the bubbles escape structure height and width less than the first pin, the side of the anisotropic conductive film is placed in bubbles escape structure upper surface.It is different from the prior art, above-mentioned technical proposal passes through the setting of bubbles escape structure, when flexible circuit board can be allowed to press, bubble in bubbles escape structure by escaping, it can not only be steeped with sending down abnormally ascending and generate probability, yields is improved, and solves the problems, such as that the existing anisotropic conductive film that needs to shrink back leads to bad connection.

Description

Flexible circuit board structure, display screen and electronic equipment

Technical field

The utility model relates to flexible circuit board metallic pin field more particularly to a kind of flexible circuit board structures, display Screen and electronic equipment.

Background technique

Flexible circuit board (Flexible Printed Circuit, abbreviation FPC), can be because when FPC bonding (pressing) Anisotropic conductive film (Anisotropic Conductive Film, ACF) glue material generates bubble phenomenon beyond Pin pin, Existing solution is shrink back ACF glue material and metallic pin distance, and bubble is maintained to escape channel, reduces air bubble problem.But also It is that there are air bubble problems, while ACF glue material of shrinking back also influences connection effect with metallic pin distance.

Utility model content

For this reason, it may be necessary to provide a kind of flexible circuit board structure scheme, bubble when solving the pressing of existing flexible circuit board is asked Topic.

To achieve the above object, a kind of flexible circuit board structure, including first substrate, the second substrate are inventor provided, It is provided with the first pin on first substrate, second pin is provided in the second substrate, the first pin passes through anisotropic conductive film It is electrically connected with second pin, one end of the first pin is provided with bubbles escape structure, one end of the first pin and bubbles escape knot Structure connection, the bubbles escape structure protrude the first substrate surface, the bubbles escape structure height and width less than the The height and width of one pin, the side of the anisotropic conductive film are placed in bubbles escape structure upper surface.

Further, the material of the bubbles escape structure is metal material.

Further, the material of the bubbles escape structure is identical as the material of the first pin metal.

Further, it is cube type that the bubbles escape structure, which is section,.

Further, the shape of the bubbles escape structure is straight strip, wave strip or wedge shape.

Further, the first substrate and/or the second substrate are flexible parent metal film.

The utility model also provides a kind of display screen, includes such as above-mentioned flexible circuit board structure, first substrate is glass Glass panel, the second substrate are flexible parent metal film.

The utility model also provides a kind of electronic equipment, including such as above-mentioned display screen.

The utility model also provides a kind of electronic equipment, including a kind of such as above-mentioned flexible circuit board structure.

It is different from the prior art, above-mentioned technical proposal can allow flexible circuit board compression moulding by the setting of bubbles escape structure When conjunction, bubble can not only be steeped with sending down abnormally ascending by escaping in bubbles escape structure and be generated probability, improve yields, and solve existing The problem of anisotropic conductive film that needs to shrink back leads to bad connection.

Detailed description of the invention

Fig. 1 is the substrate and pin configuration schematic diagram of technology before improving；

Fig. 2 is the flexible circuit board the schematic diagram of the section structure of technology before improving；

Fig. 3 is the schematic diagram of the flexible circuit board structure of the utility model embodiment；

Fig. 4 is the flexible circuit board cross-section structure of the utility model embodiment；

Fig. 5 is the schematic diagram of the flexible circuit board structure of another embodiment of the utility model；

Fig. 6 is the schematic diagram of the flexible circuit board structure of the utility model another embodiment；

Fig. 7 is the X-ray photograph of the flexible circuit board structure of technology before improving；

Fig. 8 is the X-ray photograph of the flexible circuit board structure of the utility model embodiment.

Specific embodiment

Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality It applies example and attached drawing is cooperated to be explained in detail.

Fig. 1 to Fig. 8 is please referred to, the present embodiment provides a kind of flexible circuit board structures, for solving existing flexible circuit board Bubble is led to the problem of in pressing.Existing flexible circuit board is as illustrated in fig. 1 and 2, including first substrate 1, the second substrate 2, It is provided with the first pin 10 on first substrate, second pin 11 is provided in the second substrate, the first pin passes through anisotropy conduction Glue film 3 is electrically connected with second pin.According to prior art, anisotropic conductive film 3 needs to cover the first pin 10, then can be The front position of one pin 10 forms bubble 4.

And flexible circuit board provided in this embodiment is as shown in Fig. 3 to 4, including first substrate 1, the second substrate 2, the first base Be provided with the first pin 10 on plate, be provided with second pin 20 in the second substrate, the first pin by anisotropic conductive film 3 with Second pin electrical connection, one end of the first pin are provided with bubbles escape structure 5, one end of the first pin and bubbles escape structure Connection, the bubbles escape structure protrude the first substrate surface, and the bubbles escape structure height and width are less than first The height and width of pin.Wherein, highly for fitting first substrate with far from first substrate while spacing, width For the spacing of the two sides up and down of the square face of the first pin as shown in Figure 1, the square face of the first pin as shown in Figure 1 The spacing of the left and right sides be length, length is far longer than width and height.The side of the anisotropic conductive film is placed in institute It states in bubbles escape structure upper surface, shows that the side of anisotropic conductive film will be covered in bubbles escape structure in upper surface The side in face, such anisotropic conductive film can't be all bonded with first substrate, and can be by anisotropic conductive film Side supports, and forms bubbles escape channel in the two sides of bubbles escape structure, bubble is escaped, and anisotropy is led Electric glue film can carry out again according to normal process flow, improve pressing effect.

As shown in fig. 7, being existing X-ray photograph, apparent bubble can see at pin front-end A.As shown in figure 8, Using the X-ray photograph of the flexible circuit board structure of the utility model embodiment, bubble is not seen at pin front-end A.

Preferably, the material of the bubbles escape structure is metal material, there is preferably intensity.Further, the gas The material for steeping escape structure is identical as the material of the first pin metal.It can produce and generate, reduce together with the first pin in this way Processing step.

Preferably, it is cube type that the bubbles escape structure, which is section,.Here section can be along anisotropic conductive adhesive paste The section that the side of film is cut, cube type can form differences in height two sides so that anisotropic conductive film with Bubbles escape channel can be formed between substrate, facilitate bubbles escape.The shape of specific bubbles escape structure can be straight Strip (as shown in Figure 3), wave strip (as shown in Figure 5) or wedge-shaped (as shown in Figure 6).Generally, bubbles escape knot Structure extend out from the first pin and at the first pin on the same line.

The utility model does not limit the material of first substrate and the second substrate, as long as flexible circuit board.Such as the One substrate and/or the second substrate can be flexible parent metal film (polyimides or polyester film etc.).

The utility model also provides a kind of display screen, includes such as above-mentioned flexible circuit board structure, first substrate is glass Glass panel, the second substrate are flexible parent metal film.Existing display screen includes glass panel and the flexible circuit board that is attached thereto Structure.There are bubbles on the pin of anisotropic conductive film and glass panel for this display screen, and use the utility model Flexible circuit board structure can be to avoid the generation of bubble.

The utility model also provides a kind of electronic equipment, general in existing electronic equipment including such as above-mentioned display screen It include the display screen for display, display screen is connect by flexible circuit board with driving circuit.This display screen is in anisotropy There are bubble on the pin of conductive adhesive film and glass panel, and use the flexible circuit board structure of the utility model can be to avoid The generation of bubble.

The utility model also provides a kind of electronic equipment, including a kind of such as above-mentioned flexible circuit board structure, using this reality It can be to avoid the generation of bubble with novel flexible circuit board structure.

It should be noted that being not intended to limit although the various embodiments described above have been described herein The scope of patent protection of the utility model.Therefore, based on the innovative idea of the utility model, embodiment described herein is carried out Change and modification or equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly Or above technical scheme is used in other related technical areas indirectly, it is included in the patent protection model of the utility model Within enclosing.

Claims

1. a kind of flexible circuit board structure, it is characterised in that: including first substrate, the second substrate, is provided on first substrate One pin is provided with second pin in the second substrate, and the first pin is electrically connected by anisotropic conductive film with second pin, the One end of one pin is provided with bubbles escape structure, and one end of the first pin is connect with bubbles escape structure, the bubbles escape Structure protrudes the height and width of the first substrate surface, the bubbles escape structure height and width less than the first pin, The side of the anisotropic conductive film is placed in bubbles escape structure upper surface.

2. a kind of flexible circuit board structure according to claim 1, it is characterised in that: the material of the bubbles escape structure For metal material.

3. a kind of flexible circuit board structure according to claim 1, it is characterised in that: the material of the bubbles escape structure It is identical as the material of the first pin metal.

4. a kind of flexible circuit board structure according to claim 1, it is characterised in that: the bubbles escape structure is section For cube type.

5. a kind of flexible circuit board structure according to claim 4, it is characterised in that: the shape of the bubbles escape structure For straight strip, wave strip or wedge shape.

6. a kind of flexible circuit board structure according to claim 1, it is characterised in that: the first substrate and/or second Substrate is flexible parent metal film.

7. a kind of display screen, it is characterised in that: comprising just like flexible circuit board structure described in claims 1 to 5 any one, First substrate is glass panel, and the second substrate is flexible parent metal film.

8. a kind of electronic equipment, it is characterised in that: including display screen as claimed in claim 7.

9. a kind of electronic equipment, it is characterised in that: including a kind of flexible circuit board as described in claims 1 to 6 any one Structure.