CN109817687A - A kind of flexible base board and OLED display panel - Google Patents
A kind of flexible base board and OLED display panel Download PDFInfo
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- CN109817687A CN109817687A CN201910118131.2A CN201910118131A CN109817687A CN 109817687 A CN109817687 A CN 109817687A CN 201910118131 A CN201910118131 A CN 201910118131A CN 109817687 A CN109817687 A CN 109817687A
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- bridge
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- flexible base
- base board
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Abstract
The present invention relates to field of display technology, disclosing a kind of flexible base board and OLED display panel, flexible base board therein includes: the island area of multiple array arrangements；Axle assemble is distributed in the island area that between adjacent island area and connection is adjacent；Wherein, the axle assemble between the two neighboring island area includes at least one sacrifice bridge and at least one has the function of signal lead bridge, and the Young's modulus for sacrificing bridge is greater than the Young's modulus of the function bridge.In above-mentioned flexible base board, it is correspondingly arranged on the biggish sacrifice bridge of Young's modulus with function bridge, most of tensile load of function bridge can be shared, the intrados for being beneficial to prevent function bridge cracks.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of flexible base board and OLED display panel.
Background technique
In recent years, Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display technology just had
Gradually substitute the trend of LCD technology, OLED display technology have can flexibility, contrast it is high and color rendition degree is good etc.
Feature.
Wherein, oled panel realizes that the main method of flexibility is that (Polyimide substrate carries out to PI Kapton
Aperture, to form the island area of array distribution and for the function bridge of setting signal cabling, and function bridge is mostly arc structure, and
The function bridge of arcuation be easy to cause crackle 3 (please referring to Fig. 1) since its concave profile tension stress influences.
Summary of the invention
The invention discloses a kind of flexible base board and OLED display panel, for prevent the function bridge between adjacent island area by
Tensile stress is cracked.
In order to achieve the above objectives, the present invention the following technical schemes are provided:
A kind of flexible base board, comprising:
The island area of multiple array arrangements；
Axle assemble is distributed in the island area that between adjacent island area and connection is adjacent；
Wherein, the axle assemble between the two neighboring island area includes that at least one sacrifices bridge at least one with signal
The function bridge of cabling, the Young's modulus for sacrificing bridge are greater than the Young's modulus of the function bridge.
When carrying out stretched operation to above-mentioned flexible base board, the Young's modulus due to sacrificing bridge is greater than the Young mould of function bridge
Amount sacrifices bridge and assumes responsibility for wherein most tensile stress, when relative to only functional bridge, function bridge is held in an axle assemble
The tensile load of load reduces, and therefore, tensile stress suffered by the concave profile of function bridge is also obviously reduced, and the intrados of function bridge is not
It is easy to appear crackle.
Preferably, the width for sacrificing bridge is greater than the width of corresponding function bridge.
Preferably, the sacrifice bridge and the function bridge are arc, and the bending radius for sacrificing bridge is greater than corresponding
The bending radius of the function bridge.
Preferably, the sacrifice bridge and the function bridge are arc, in the same axle assemble, the sacrifice bridge
Opening towards with the opening of the function bridge towards opposite.
Preferably, the opening for sacrificing bridge is oppositely arranged with the opening of the corresponding function bridge.
Preferably, in the same axle assemble, the opening court of the opening direction and the function bridge for sacrificing bridge
To identical.
Preferably, the function bridge includes:
The insulating layer contacted with the signal lead；
Deviate from the reinforcement metal layer of the signal lead side positioned at the insulating layer.
Preferably, it is equipped with along the intrados of the function bridge and reinforces metal strip.
Preferably, reinforce metal strip and the signal lead same layer is arranged.
The present invention also provides following technical schemes:
A kind of OLED display panel, comprising: flexible base board described in above-mentioned technical proposal.The OLED display panel with
Possessed advantage is identical compared with the existing technology for the flexible base board, and details are not described herein.
Possessed advantage is identical compared with the existing technology with the flexible base board for the OLED display panel, herein
It repeats no more.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the function bridge of flexible base board in the prior art；
Fig. 2 is that structure of the flexible base board provided in an embodiment of the present invention when function bridge is opposite with bridge opening direction is sacrificed is shown
It is intended to；
Fig. 3 is that structure of the flexible base board provided in an embodiment of the present invention when function bridge is identical with bridge opening direction is sacrificed is shown
It is intended to；
Fig. 4 is the structural schematic diagram of function bridge in flexible base board provided in an embodiment of the present invention；
Fig. 5 is the sectional view of function bridge in flexible base board provided in an embodiment of the present invention.
Icon: 1- non-metallic layer；2- signal lead；3- crackle；4- reinforces metal strip；The island 5- area；6- sacrifices bridge；7- function
Bridge；8-PI substrate；9-Barrier layers；10- reinforces metal layer；11-GI1 layers；Line1 layers of 12-Data；13-PVX1 layers；14-
Line2 layers of Data；15-PVX2 layers；16-PVX3 layers.
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 only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Flexible base board provided in an embodiment of the present invention, comprising:
The island area 5 of multiple array arrangements；
Axle assemble is distributed in the island area 5 that between adjacent island area 5 and connection is adjacent；
Wherein, the axle assemble between two neighboring island area 5 includes at least one sacrifice bridge 6 and at least one is walked with signal
The arc function bridge 7 of line 2, the Young's modulus for sacrificing bridge 6 are greater than the Young's modulus of function bridge 7.
Wherein, signal lead 2 can be grid line, data line and TP (touch-control) signal wire etc..
When carrying out stretched operation to above-mentioned flexible base board, the Young's modulus due to sacrificing bridge 6 is greater than the Young mould of function bridge 7
Amount sacrifices bridge 6 and assumes responsibility for wherein most tensile stress in an axle assemble, when relative to only functional bridge 7,7 institute of function bridge
The tensile load undertaken reduces, and therefore, tensile stress suffered by the concave profile of function bridge 7 is also obviously reduced, the inner arc of function bridge 7
Face is not easy cracked 3.
In order to obtain biggish Young's modulus, it can adjust in the following way and sacrifice the ginseng related to function bridge 7 of bridge 6
Number:
Optionally, as shown in Figures 2 and 3, the width for sacrificing bridge 6 is greater than the width of corresponding function bridge 7, sacrifices bridge 6
Width is bigger, and the ability of resistance to deformation is stronger；Herein, the width for sacrificing bridge 6 refers to greater than the width of corresponding function bridge 7:
The width for sacrificing bridge 6 is greater than the width of the function bridge 7 in same axle assemble.
Optionally, as shown in Figures 2 and 3, it sacrifices bridge 6 and function bridge 7 is arc, the bending radius for sacrificing bridge 6 is greater than
The bending radius of corresponding function bridge 7, it is thus possible to make within the scope of the always on property deformation area of function bridge 7 that deformation occurs, and
Non-linear deformation will not occur, therefore, function bridge 7 can receive good protection.
Wherein, when sacrificing bridge 6 and function bridge 7 and being arc, in the same axle assemble, sacrifice the opening of bridge 6 towards with
The opening direction of function bridge 7 identical can may be reversed.
As shown in figure 3, in the same axle assemble, the opening direction of bridge 6 and the opening of function bridge 7 are sacrificed towards identical,
Function bridge 7 is located at the outer arc side for sacrificing bridge 6.
When sacrifice the opening direction of bridge 6 and the opening of function bridge 7 towards it is opposite when, can at least following two situation:
The first, as shown in Fig. 2, the opening for sacrificing bridge 6 is oppositely arranged with the opening of corresponding function bridge 7, so as to sacrifice
Bridge 6 and corresponding function bridge 7 form enclosed construction, are more conducive to sacrificing the stability of bridge 6 and function bridge 7.
Second, the opening for sacrificing bridge 6 is disposed opposite to each other with the opening of corresponding function bridge 7.
In addition, function bridge 7 includes the insulating layer contacted with signal lead 2；
Reinforcement metal layer 10 positioned at 2 side of insulating layer divergence signal cabling.
For example, function bridge 7 includes PI (Polyimide；Polyimides) it substrate 8 and multiple is stacked on PI substrate 8
Film layer, still, due to having the function of that the film layer of signal lead 2 has following structure form: as shown in figure 5, i.e. from bridge 7
The lateral outer arc side of arc is intervally distributed with the metal signal cabling 2 and non-metallic layer 1 extended along 7 arc length direction of function bridge, causes certainly
The direction that the lateral outer arc side of inner arc extends, the Young's modulus of function bridge 7 is uneven, in order to uniform to outer arc side obtained from inner arc side
Young's modulus, insulating layer deviate from signal lead 2 film layer side setting reinforce metal layer 10, reinforce metal layer 10 have
There is preferable toughness, function bridge 7 can be made from inner arc side to outer arc side Young's modulus to tend to homogenize, thus, function bridge 7
Deformation quantity from inner arc side to outer arc side reaches unanimity, and the medial surface of function bridge 7 is not likely to produce crackle 3, and insulating layer therein
It can be avoided signal lead 2 and reinforce metal layer 10；
Specifically, the structure of function bridge 7 includes but is not limited to following form: can refer to Fig. 4, be successively PI from bottom to top
Substrate 8, Barrier layer 9, reinforce metal layer 10, GI1 layer 11, Data Line1 layer 12, PVX1 layer 13, Data Line2 layer 14,
PVX2 layer 15 reinforces metal layer 10 and PVX3 layer 16；
Wherein, Data Line1 layer 12 and Data Line2 layer 14 are the film layer with above-mentioned signal lead 2, i.e., herein
In class film layer, it is intervally distributed with to walk along the metal signal that 7 arc length direction of function bridge extends from the lateral outer arc side of the inner arc of function bridge 7
Line 2 and non-metallic layer 1.
Reinforcing 10 groups of metal layer becomes the laminated construction of one or several kinds of compositions of these metals of Mo, Ti, Al, Cu,
Thickness range isSuch as it can be With
Wherein, PI substrate 8 with a thickness of 5um-15um, such as can be 5um, 7um, 10um, 12um and 15um；
Barrier layer 9 is buffer layer, with a thickness ofSuch as it can be With9 groups of Barrier layer become SiNx and SiO2Laminated construction or wherein
A certain layer structure；
The structure of GI1 layer 11 is SiNx and SiO2Laminated construction or a certain layer structure therein, with a thickness ofSuch as can be,With
The structure of PVX1 layer 13, PVX2 layer 15 and PVX3 layer 16 is SiNx and SiO2Laminated construction or it is therein certain
One layer of structure, with a thickness ofSuch as it can be With
Wherein, GI1 layer 11 and PVX2 layer 15 are the above-mentioned insulating layer contacted with signal lead 2, and GI1 layer 11 is for preventing
Reinforce metal layer 10 directly to contact with the Data Line1 layer 12 on the downside of it, and leads to signal different in Data Line1 layer 12
2 short circuit of cabling, PVX2 layer 15 is used to prevent Data Line2 layer 14 and the reinforcement metal layer 10 on the upside of it from directly contacting, and causes
Different 2 short circuit of signal lead in Data Line2 layer 14.
Preferably, as shown in figure 4, the intrados along function bridge 7 is equipped with reinforcement metal strip 4, so that with preferable toughness
Reinforcing metal strip 4 can be such that the Young's modulus between each tunic layer tends to uniformly, so as to prevent each tunic layer of function bridge 7
Intrados crack.
Wherein, reinforcing metal strip 4 can only can also be walked with signal with multiple film layers of 7 intrados of covering function bridge
The film layer same layer of line 2 is arranged.
It is convenient to utilize photoetching technique production signal when reinforcing metal strip 4 and there is the film layer same layer of signal lead 2 to be arranged
It is produced simultaneously when cabling 2 and reinforces metal strip 4, be conducive to save processing program.
Embodiment two
OLED display panel provided in an embodiment of the present invention, comprising: the flexible base board provided such as embodiment one.
When carrying out stretched operation to above-mentioned OLED display panel, since the sacrifice bridge 6 in flexible base board has shared function bridge 7
Part tensile load, when relative to only functional bridge 7, tensile load that function bridge 7 is undertaken reduces, therefore, function bridge 7
Tensile stress suffered by concave profile is also obviously reduced, and the intrados of function bridge 7 is not easy cracked 3.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
Bright spirit and scope.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of flexible base board characterized by comprising
The island area of multiple array arrangements；
Axle assemble is distributed in the island area that between adjacent island area and connection is adjacent；
Wherein, the axle assemble between the two neighboring island area includes that at least one sacrifices bridge at least one with signal lead
Function bridge, it is described sacrifice bridge Young's modulus be greater than the function bridge Young's modulus.
2. flexible base board according to claim 1, which is characterized in that the width for sacrificing bridge is greater than corresponding function bridge
Width.
3. flexible base board according to claim 1, which is characterized in that the sacrifice bridge and the function bridge are arc,
The bending radius for sacrificing bridge is greater than the bending radius of the corresponding function bridge.
4. flexible base board according to claim 1, which is characterized in that the sacrifice bridge and the function bridge are arc,
In the same axle assemble, the opening direction for sacrificing bridge is opposite with the opening of function bridge direction.
5. flexible base board according to claim 4, which is characterized in that opening and the corresponding function for sacrificing bridge
The opening of bridge is oppositely arranged.
6. flexible base board according to claim 1, which is characterized in that in the same axle assemble, the sacrifice bridge
Opening towards with the opening of the function bridge towards identical.
7. flexible base board according to claim 1, which is characterized in that the function bridge includes:
The insulating layer contacted with the signal lead；
Deviate from the reinforcement metal layer of the signal lead side positioned at the insulating layer.
8. flexible base board according to claim 1, which is characterized in that be equipped with along the intrados of the function bridge and reinforce metal
Item.
9. flexible base board according to claim 8, which is characterized in that reinforce metal strip and set with the signal lead same layer
It sets.
10. a kind of OLED display panel characterized by comprising the described in any item flexible base boards of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118131.2A CN109817687B (en) | 2019-02-15 | 2019-02-15 | Flexible substrate and OLED display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118131.2A CN109817687B (en) | 2019-02-15 | 2019-02-15 | Flexible substrate and OLED display panel |
Publications (2)
| Publication Number | Publication Date |
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| CN109817687A true CN109817687A (en) | 2019-05-28 |
| CN109817687B CN109817687B (en) | 2021-10-08 |
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| CN201910118131.2A Active CN109817687B (en) | 2019-02-15 | 2019-02-15 | Flexible substrate and OLED display panel |
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Cited By (5)
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| WO2020259462A1 (en) * | 2019-06-25 | 2020-12-30 | 京东方科技集团股份有限公司 | Flexible base plate, preparation method therefor, display panel, and display device |
| CN113539099A (en) * | 2021-07-19 | 2021-10-22 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN113629066A (en) * | 2020-08-21 | 2021-11-09 | 友达光电股份有限公司 | Stretchable pixel array substrate |
| CN113838371A (en) * | 2020-08-21 | 2021-12-24 | 友达光电股份有限公司 | Stretchable pixel array substrate |
| WO2023159498A1 (en) * | 2022-02-25 | 2023-08-31 | 京东方科技集团股份有限公司 | Display panel and manufacturing method therefor, and display device |
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| Publication number | Publication date |
|---|---|
| CN109817687B (en) | 2021-10-08 |
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