CN109951950A - Flexible circuit board and display device - Google Patents
Flexible circuit board and display device Download PDFInfo
- Publication number
- CN109951950A CN109951950A CN201910339750.4A CN201910339750A CN109951950A CN 109951950 A CN109951950 A CN 109951950A CN 201910339750 A CN201910339750 A CN 201910339750A CN 109951950 A CN109951950 A CN 109951950A
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- Prior art keywords
- circuit board
- flexible circuit
- touch
- hole
- protective layer
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of flexible circuit board and display device; wherein, flexible circuit board includes the protective layer of flexible substrate and the covering flexible substrate, wherein; the through-hole through the protective layer is offered in the bending region of the protective layer, is filled with soft material in the through-hole.Flexible circuit board provided by the invention and display device, can be improved display device accounts for screen ratio.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of flexible circuit board and display devices.
Background technique
With the fast development of display technology, more technology sense, the comprehensive screen more favored by user becomes display technology and leads
The research emphasis in domain, wherein the technology for reducing the width of the frame of display screen is to realize the necessary place mat shielded comprehensively.
Currently, the wider width of flexible screen lower frame, as shown in Figure 1, this is because flexible screen lower frame includes flexible electrical
The fringe region a of the road plate and bending region b of flexible circuit board.In the prior art, due to the crooked process radius of bending region part
It is larger, cause the width of above-mentioned bending region b larger, and then cause the width of flexible screen lower frame larger, causes display device
Account for and shield smaller problem.
Summary of the invention
The embodiment of the present invention provides a kind of flexible circuit board and display device, to solve in the prior art because flexible circuit exists
The crooked process radius for bending region is larger, and accounting for for display device is caused to shield smaller problem.
It is as follows that in order to solve the above technical problem, the present invention provides technical solutions:
In a first aspect, the embodiment of the present invention provides a kind of flexible circuit board, including flexible substrate and the covering flexibility
The protective layer of substrate, wherein the through-hole through the protective layer is offered in the bending region of the protective layer, in the through-hole
Filled with soft material.
Further, the gross area in region locating for multiple through-holes be greater than or equal to it is described bending region area two/
One.
Further, the soft material is green oil.
Further, the cross section of the through-hole is round or polygon.
Further, multiple through-holes array distribution in the bending region, wherein the through-hole of adjacent rows is staggered set
Distance arrangement.
Further, the cross section of the through-hole is strip, and multiple through-holes are along overbending direction spaced set.
Further, the length direction of the through-hole is vertical with the overbending direction.
Further, metal layer is additionally provided between the protective layer and the flexible substrate.
Second aspect, the embodiment of the present invention also provides a kind of display device, including flexible circuit board as described above, described
Bending region of the flexible circuit board outside display area is supported or opposed to be bent to the side of display side.
Further, the display device is touch control display apparatus, and the flexible circuit board is touch-control flexible circuit board；
The touch control display apparatus includes that driving circuit, touch-control integrated circuit and the touch-control in display area drive
Moving-wire and touch induction lines；It include mutually independent first metal pattern and the second metal pattern in the metal layer；
The driving circuit drives line to transmit driving signal by first metal pattern to the touch-control, makes the touching
Capacitor is formed between control driving line and the touch induction lines；
The touch-control integrated circuit transmits inductive signal to the touch induction lines by second metal pattern, to connect
Receive the variable quantity of the capacitor.
In technical solution provided by the invention, by being opened up in the bending region of protective layer through the logical of the protective layer
Hole, and the filled soft material in through-hole, so that quality of the flexible circuit board in bending region softens, to reduce flexible circuit
The crooked process radius of plate reduces width shared by bending region, and then shortens the width of flexible screen lower frame, improves display device
Zhan Ping ratio.Therefore, what technical solution provided by the invention can be improved display device accounts for screen ratio.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the area schematic of flexible screen lower frame in the prior art；
Fig. 2 is the structural schematic diagram of flexible circuit board in the prior art；
Fig. 3 is the structural schematic diagram for the flexible circuit board that one embodiment of the invention provides；
One of the arrangement schematic diagram of through-hole in the flexible circuit board that Fig. 4 provides for one embodiment of the invention；
The two of the arrangement schematic diagram of through-hole in the flexible circuit board that Fig. 5 provides for one embodiment of the invention；
The three of the arrangement schematic diagram of through-hole in the flexible circuit board that Fig. 6 provides for one embodiment of the invention；
Fig. 7 is the structural schematic diagram for the flexible circuit board that one embodiment of the invention provides；
Drive signal line and induction when being touch-control flexible circuit board that Fig. 8 is the flexible circuit board that one embodiment of the invention provides
The trace-diagram of signal wire.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
In the prior art, as shown in Figure 1, flexible screen lower frame includes the fringe region a and flexible circuit of flexible circuit board
The bending region b of plate.Wherein, the film layer structure in flexible circuit board bending region, as shown in Fig. 2, successively including flexible substrate
(Base Film) 201, metal layer (Copper) 202 and protective layer (Cover Layer) 203, wherein protective layer includes polyamides
Imines (PI) layer and viscose glue (adhesive) layer make since PI layers of material are harder and the thickness of protective layer is very thick (about 32.5um)
The crooked process radius that region must be bent is very big, causes the width for bending region very big；In addition, bending place folding s tress is very big, in height
It is easy to cause flexible circuit board to peel off (peeling off) under warm high humidity environment, influences the normal function of display device.
The embodiment of the present invention can reduce flexibility to solve the above problems, provide a kind of flexible circuit board and display device
The crooked process radius of circuit board reduces width shared by bending region, and then shortens the width of flexible screen lower frame, improves display dress
That sets accounts for screen ratio.
The embodiment of the present invention provides a kind of flexible circuit board, as shown in figure 3, including described in flexible substrate 301 and covering
The protective layer 302 of flexible substrate, wherein offered in the bending region of the protective layer 302 through the logical of the protective layer 302
Hole 303, the through-hole 303 is interior to be filled with soft material.
In the embodiment of the present invention, by opening up the through-hole through the protective layer 302 in the bending region of protective layer 302
303, and the filled soft material in through-hole 303, so that quality of the flexible circuit board in bending region softens, to reduce flexibility
The crooked process radius of circuit board reduces width shared by bending region, and then shortens the width of flexible screen lower frame, improves display dress
That sets accounts for screen ratio.Therefore, what technical solution provided by the invention can be improved display device accounts for screen ratio.
In the embodiment of the present invention, as shown in figure 3, the structure of protective layer 302 equally can be by PI layers and adhesive-layer it is common
Composition, through-hole 303 runs through PI layers and adhesive-layer.Certainly, protective layer is also possible to other film layer compositions with the same function
, the embodiment of the present invention is not construed as limiting this.
The bending region of above-mentioned protective layer 302 is the protection occurred to deformation occurs when the bending of the side backwards to display side
Region where layer, the width in bending region is crooked process radius when bending.By opening up through-hole 303 in bending region, and
The filled soft material into through-hole can either reduce crooked process radius, so that the material in bending region softens to improve display device
Account for screen ratio, also can reduce the folding stress of bending place, it is ensured that the normal display of display device.
The quantity embodiment of the present invention of above-mentioned through-hole 303 is not construed as limiting, and can be the biggish through-hole of cross-sectional area,
It can be the lesser through-hole of multiple cross-sectional areas.In addition, the arrangement mode of multiple through-holes is not also made when through-hole 303 is multiple
It limits, can be and concentrate on a region arrangement, be also possible to bend in region and uniformly arrange.
It should be noted that the ratio of soft material can not be excessive, and when the ratio of soft material is excessive, flexible circuit board
Bending place hardness it is too low, will cause in bending region bending process that theres is a situation where fold is bad, be easy influence flexible electrical
The normal work of road plate.Preferably, the soft material accounts for the 50%-85% of protective layer toatl proportion.Wherein, soft material can be with
Using green oil.
In addition, flexible circuit board can be touch-control flexible circuit board (Touch Flexible Printed Circuit, letter
Claim TFPC), by reducing the crooked process radius of TFPC, so as to shorten the width of the lower frame of touch-control flexible screen.
Further, the gross area in region locating for multiple through-holes 303 is greater than or equal to the two of the area in the bending region
/ mono-.
The gross area in the region locating for multiple through-holes 303 is greater than or equal to the half of the area in the bending region
When, the hardness of the protective layer in bending region can be substantially reduced, to greatly reduce crooked process radius, reduces the width in bending region
Degree.Specifically, crooked process radius 0.35mm in the prior art can be decreased to 0.15mm.
Further, as shown in Figure 4 and Figure 5, in figure dotted line indicate through-hole 303 cross section, the through-hole 303 it is transversal
Face is round or polygon.
The cross section of through-hole 303 can be it is diversified, such as: ellipse, rectangle, diamond shape etc. can all lead to
The cross section in hole 303 is unified for a kind of shape, and the cross section for being also possible to a part of through-hole 303 is a kind of shape, another part
The cross section of through-hole 303 is another shape, such as: the cross section of a part of through-hole is triangle, the cross of another part through-hole
Section is ellipse.
In an optional embodiment, as shown in figure 4, the array distribution in the bending region of multiple through-holes 303,
In, the through-hole 303 of adjacent rows be staggered both set a distance arrangement.
Above-mentioned line direction may be considered the direction parallel with overbending direction, and this arrangement mode can ensure soft material
Distributing homogeneity avoids flexible circuit board from peeling off so that the folding s tress of bending place is uniform.
Further, as shown in fig. 6, the cross section of the through-hole 303 is strip, multiple through-holes 303 are along overbending direction
Spaced set.
The through-hole of multiple strips can be to be arranged in parallel with overbending direction, wherein the length direction of through-hole cross section can
To be perpendicular to overbending direction (with shown in Fig. 6), it is also possible to form the angle of predetermined angle with overbending direction.
Further, as shown in fig. 7, being additionally provided with metal layer between the protective layer 302 and the flexible substrate 301
304.One end of metal layer 304 is connect with signal transmitting terminal, and the other end of metal layer 304 is connect with signal receiving end, thus real
The transmitting of existing signal.
It can be realized the transmitting of signal by the metal layer in flexible circuit board, wherein metal layer, which can be, only transmits one
Kind signal, being also possible to metal layer includes multiple mutually independent metallic patterns, and each metallic pattern is used to transmit a kind of signal,
To realize the transmission of multiple signals.
A kind of display device, including flexible circuit board as described above, the flexible electrical are also provided in the embodiment of the present invention
Bending region of the road plate outside display area is supported or opposed to be bent to the side of display side.
Display device can be display, mobile phone, tablet computer, television set, wearable electronic, navigation display equipment
Deng.
Further, flexible circuit board further includes the metal layer between the protective layer and the flexible substrate.Institute
Stating display device is touch control display apparatus, and the flexible circuit board is touch-control flexible circuit board；
The touch control display apparatus includes that driving circuit, touch-control integrated circuit and the touch-control in display area drive
Moving-wire and touch induction lines；It include mutually independent first metal pattern and the second metal pattern in the metal layer；
The driving circuit drives line to transmit driving signal by first metal pattern to the touch-control, makes the touching
Capacitor is formed between control driving line and the touch induction lines；
The touch-control integrated circuit transmits inductive signal to the touch induction lines by second metal pattern, to connect
Receive the variable quantity of the capacitor.
First metal pattern and the second metal pattern are mutually indepedent, to will not cause the crosstalk of signal.
In the present embodiment, one end of the first metal pattern is connect with driving circuit, the other end of the first metal pattern and position
Drive signal line (TX) in display area connects, and the first metal pattern is for the driving signal that driving circuit is sent to be transferred to
Drive signal line；One end of second metal pattern is connect with touch-control integrated circuit (IC), the other end of the second metal pattern and position
Inductive signal line (RX) in display area connects, and the inductive signal that the second metal pattern is used to send touch-control integrated circuit passes
It is handed to inductive signal line, cabling distribution is as shown in Figure 8.
After driving signal is transferred to drive signal line, the energy between the drive signal line and inductive signal line of display area
Enough form capacitor；After inductive signal is transferred to inductive signal line, inductive signal line can receive the variable quantity of capacitor and pass touching back
Integrated circuit is controlled, to know the position of touch on touch screen.
Wherein, TX line and RX line can be single layer indium tin oxide (SITO structure), since ITO is transparent material, thus
It will not influence the display effect of display device.
Unless otherwise defined, the technical term or scientific term that the disclosure uses should be tool in fields of the present invention
The ordinary meaning for thering is the personage of general technical ability to be understood." first ", " second " used in the disclosure and similar word are simultaneously
Any sequence, quantity or importance are not indicated, and are used only to distinguish different component parts." comprising " or "comprising" etc.
Similar word means that the element or object before the word occur covers the element or object for appearing in the word presented hereinafter
And its it is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not limited to physics
Or mechanical connection, but may include electrical connection, it is either direct or indirectly."upper", "lower",
"left", "right" etc. is only used for indicating relative positional relationship, and after the absolute position for being described object changes, then the relative position is closed
System may also correspondingly change.
It is appreciated that ought such as layer, film, region or substrate etc element be referred to as be located at another element "above" or "below"
When, which " direct " can be located at "above" or "below" another element, or may exist intermediary element.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (10)
1. a kind of flexible circuit board, which is characterized in that the protective layer including flexible substrate and the covering flexible substrate,
In, the through-hole through the protective layer is offered in the bending region of the protective layer, is filled with soft material in the through-hole.
2. flexible circuit board according to claim 1, which is characterized in that the gross area in region locating for multiple through-holes be greater than or
Equal to the half of the area in the bending region.
3. flexible circuit board according to claim 1, which is characterized in that the soft material is green oil.
4. flexible circuit board according to claim 1, which is characterized in that the cross section of the through-hole is round or polygon
Shape.
5. flexible circuit board according to claim 4, which is characterized in that multiple through-holes array point in the bending region
Cloth, wherein the through-hole of adjacent rows be staggered both set a distance arrangement.
6. flexible circuit board according to claim 4, which is characterized in that the cross section of the through-hole is strip, multiple
Through-hole is along overbending direction spaced set.
7. flexible circuit board according to claim 6, which is characterized in that the length direction of the through-hole and the bending side
To vertical.
8. flexible circuit board according to claim 1, which is characterized in that between the protective layer and the flexible substrate also
It is provided with metal layer.
9. a kind of display device, which is characterized in that described including flexible circuit board such as of any of claims 1-8
Bending region of the flexible circuit board outside display area is supported or opposed to be bent to the side of display side.
10. display device according to claim 9, which is characterized in that including flexible circuit as claimed in claim 8
Plate；The display device is touch control display apparatus, and the flexible circuit board is touch-control flexible circuit board；
The touch control display apparatus includes driving circuit, touch-control integrated circuit and the touch-control driving line in display area
And touch induction lines；It include mutually independent first metal pattern and the second metal pattern in the metal layer；
The driving circuit drives line to transmit driving signal by first metal pattern to the touch-control, drives the touch-control
Capacitor is formed between moving-wire and the touch induction lines；
The touch-control integrated circuit transmits inductive signal to the touch induction lines by second metal pattern, to receive
State the variable quantity of capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339750.4A CN109951950A (en) | 2019-04-25 | 2019-04-25 | Flexible circuit board and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339750.4A CN109951950A (en) | 2019-04-25 | 2019-04-25 | Flexible circuit board and display device |
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| Publication Number | Publication Date |
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| CN109951950A true CN109951950A (en) | 2019-06-28 |
Family
ID=67016267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910339750.4A Pending CN109951950A (en) | 2019-04-25 | 2019-04-25 | Flexible circuit board and display device |
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| CN (1) | CN109951950A (en) |
Cited By (8)
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| CN110740202A (en) * | 2019-10-21 | 2020-01-31 | 维沃移动通信有限公司 | Cover plate, display module and foldable electronic equipment |
| CN111179761A (en) * | 2020-02-25 | 2020-05-19 | 京东方科技集团股份有限公司 | Display substrate, display panel and display device |
| CN111402734A (en) * | 2020-03-26 | 2020-07-10 | 武汉华星光电半导体显示技术有限公司 | Flexible display module, preparation method thereof and flexible display device |
| CN113112909A (en) * | 2020-01-10 | 2021-07-13 | 夏普株式会社 | Cover window for foldable display device |
| CN113658519A (en) * | 2021-08-03 | 2021-11-16 | Oppo广东移动通信有限公司 | Electronic device |
| CN113724597A (en) * | 2021-08-31 | 2021-11-30 | 京东方科技集团股份有限公司 | Display module and display device |
| CN114973969A (en) * | 2022-06-27 | 2022-08-30 | 武汉天马微电子有限公司 | Folding display screen |
| CN117095618A (en) * | 2023-10-16 | 2023-11-21 | 长春希达电子技术有限公司 | Flexible display panel preparation method and display device |
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| CN117095618A (en) * | 2023-10-16 | 2023-11-21 | 长春希达电子技术有限公司 | Flexible display panel preparation method and display device |
| CN117095618B (en) * | 2023-10-16 | 2024-03-15 | 长春希达电子技术有限公司 | Flexible display panel preparation method and display device |
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Application publication date: 20190628 |