CN208402204U - A kind of ultrathin flexible pcb board - Google Patents
A kind of ultrathin flexible pcb board Download PDFInfo
- Publication number
- CN208402204U CN208402204U CN201820938798.8U CN201820938798U CN208402204U CN 208402204 U CN208402204 U CN 208402204U CN 201820938798 U CN201820938798 U CN 201820938798U CN 208402204 U CN208402204 U CN 208402204U
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- layer
- tear
- flexible base
- base board
- insulating protective
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Abstract
The utility model relates to a kind of flexible circuit board; especially a kind of ultrathin flexible pcb board; including flexible base board; the flexible base board front is equipped with anti-tear layer; the flexible base board back side is equipped with the first insulating protective layer, and the anti-tear layer is formed by several fiber filament single layers are unidirectionally equidistant, and the anti-tear layer surface is equipped with the second insulating protective layer; the second insulation protection layer surface is equipped with printed circuit, and the printed circuit surface is equipped with electro-magnetic screen layer；The utility model structure is simple, by, by the unidirectional equidistant anti-tear layer formed of several fiber filament single layers, neither influencing the thickness and flexibility of wiring board, and have the function of preferable tear-proof in the setting of flexible base board surface.
Description
Technical field
The utility model relates to a kind of flexible circuit board, especially a kind of ultrathin flexible pcb board.
Background technique
Flexible circuit board is that have height reliability and excellent by one kind made of substrate of polyimides or polyester film
Flexible printed circuit board；Have the characteristics that Distribution density is high, light-weight, thickness is thin and bending is good.With the hair of science and technology
Exhibition and social progress, the trend development that flexible circuit board is interconnected towards thin, small, light, multilayer and random layer.Flexible PCB is removed
Have the advantages that packing density is high, other than small in size, light weight, there is also some disadvantages: if tear resistance is poor, folding resistance
It is not high.Existing technology has made improvement to this, such as a kind of anti-tear flexible circuit board of PCB of Chinese patent, application number:
201621009730.9 the applying date: 2016-08-25；The flexible circuit board includes flexible base board, flexible base board front and
The back side is equipped with one layer of insulating protective layer, and the positive insulating protective layer of flexible base board is equipped with printed circuit, the printing
Circuit surface is equipped with anti-corrosion insulating layer；The flexible base board includes anti-tear braiding layer, and the anti-tear braiding layer two sides is viscous
Attached strata ester film, the anti-tear braiding layer is by high strength fibre silk weaving at the fiber filament is Kafra fiber.This is specially
Benefit have the advantages that tear-proof and can two-way bending, but have the disadvantage that and 1) increase anti-tear braiding layer so that this
The thickness of flexible circuit board increases；2) use high strength fibre silk weaving at anti-tear braiding layer, the hardness of braiding layer can compare
It is higher, lead to the flexible decline of wiring board.
Summary of the invention
In view of the deficiencies of the prior art, the utility model provides a kind of ultrathin flexible pcb board.
The technical solution of the utility model are as follows:
A kind of ultrathin flexible pcb board, it is characterised in that: including flexible base board, the flexible base board front is equipped with anti-tear
Layer, the flexible base board back side are equipped with the first insulating protective layer, and the anti-tear layer is unidirectionally equidistant by several fiber filament single layers
From composition, the anti-tear layer surface is equipped with the second insulating protective layer, and the second insulation protection layer surface is equipped with printed circuit,
The printed circuit surface is equipped with electro-magnetic screen layer.
In above structure, flexible base board front be equipped with by several fiber filament single layers it is unidirectional it is equidistant form it is anti-tear
Layer, the anti-tear layer very thin thickness, while can also prevent wiring board from being pullled or being torn when folding, and by single layer list
To fiber filament composition, will not influence the flexibility of wiring board, in addition, increasing tool when the anti-tear layer bends wiring board unidirectionally
There is effect resistant to bending.Printed circuit surface, which is equipped with electro-magnetic screen layer, can protect in wiring board route not by extraneous (forceful electric power magnetic region
Or vulnerable to interference range) interference.
Further, according to different tear-proof requirements, the distance between fiber filament is set 0.5-1 by the utility model
Millimeter.
Further, the fiber filament is Kafra fiber.Kafra fiber has that density is low, intensity is high, good toughness, resistance to
The advantages of high temperature, easy to process and molding.
Further, the flexible base board, anti-tear layer, the first insulating protective layer, the second insulating protective layer, printed circuit
It is attached by adhesive between electro-magnetic screen layer.
Further, the adhesive is one of acrylic compounds, organic silica gel and polyurethane based resin.
The utility model has the following beneficial effects: the utility model structure is simple, if by the setting of flexible base board surface by
The anti-tear layer of the unidirectional equidistant composition of dry fiber filament single layer, neither influences the thickness and flexibility of wiring board, and have preferable
Tear-proof effect.
Detailed description of the invention
Fig. 1 is the sectional view of the utility model；
Fig. 2 is the top view of anti-tear layer.
In figure, 1, flexible base board；2, anti-tear layer；3, the first insulating protective layer；4, the second insulating protective layer；5, printing electricity
Road；6, electro-magnetic screen layer；21, fiber filament.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
As illustrated in fig. 1 and 2, a kind of ultrathin flexible pcb board, including flexible base board 1,1 front of flexible base board are equipped with anti-
Tearing layer 2,1 back side of flexible base board are equipped with the first insulating protective layer 3, and the anti-tear layer 2 is single by several fiber filaments 21
The unidirectional equidistant composition of layer, anti-tear 2 surface of layer is equipped with the second insulating protective layer 4,4 surface of the second insulating protective layer
Equipped with printed circuit 5,5 surface of printed circuit is equipped with electro-magnetic screen layer 6.
In above structure, the front of flexible base board 1 be equipped with by several 21 single layers of fiber filament it is unidirectional it is equidistant form anti-tear
Parting 2, anti-tear 2 very thin thickness of layer, while can also prevent wiring board from being pullled or being torn when folding, and by list
The unidirectional fiber filament 21 of layer forms, and will not influence the flexibility of wiring board, makes wiring board unidirectional in addition, increasing the anti-tear layer 2
There is effect resistant to bending when bending.5 surface of printed circuit, which is equipped with electro-magnetic screen layer 6, can protect in wiring board route not by the external world
The interference of (forceful electric power magnetic region or vulnerable to interference range).
According to different tear-proof requirements, the distance between fiber filament 21 is set 0.5-1 millimeters by the utility model.
The fiber filament 21 is Kafra fiber.
The flexible base board 1, anti-tear layer 2, the first insulating protective layer 3, the second insulating protective layer 4, printed circuit 5 and electricity
It is attached by adhesive between magnetic masking layer 6.
The adhesive is one of acrylic compounds, organic silica gel and polyurethane based resin.
The description of the embodiments and the specification only illustrate the principle of the present utility model and most preferred embodiment, is not taking off
Under the premise of from the spirit and scope of the utility model, the utility model also has various changes and improvements, these changes and improvements
It falls within the scope of the claimed invention.
Claims (5)
1. a kind of ultrathin flexible pcb board, it is characterised in that: including flexible base board, the flexible base board front is equipped with anti-tear layer,
The flexible base board back side is equipped with the first insulating protective layer, and the anti-tear layer is by unidirectionally equidistant group of several fiber filament single layers
At the anti-tear layer surface is equipped with the second insulating protective layer, and the second insulation protection layer surface is equipped with printed circuit, described
Printed circuit surface is equipped with electro-magnetic screen layer.
2. a kind of ultrathin flexible pcb board according to claim 1, it is characterised in that: the distance between described fiber filament is
0.5-1 millimeters.
3. a kind of ultrathin flexible pcb board according to claim 2, it is characterised in that: the fiber filament is Kafra fiber.
4. a kind of ultrathin flexible pcb board according to claim 3, it is characterised in that: the flexible base board, anti-tear layer,
It is attached by adhesive between first insulating protective layer, the second insulating protective layer, printed circuit and electro-magnetic screen layer.
5. a kind of ultrathin flexible pcb board according to claim 4, it is characterised in that: the adhesive is acrylic compounds, has
One of machine silica gel and polyurethane based resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820938798.8U CN208402204U (en) | 2018-06-19 | 2018-06-19 | A kind of ultrathin flexible pcb board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820938798.8U CN208402204U (en) | 2018-06-19 | 2018-06-19 | A kind of ultrathin flexible pcb board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208402204U true CN208402204U (en) | 2019-01-18 |
Family
ID=65132626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820938798.8U Active CN208402204U (en) | 2018-06-19 | 2018-06-19 | A kind of ultrathin flexible pcb board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208402204U (en) |
-
2018
- 2018-06-19 CN CN201820938798.8U patent/CN208402204U/en active Active
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