CN210349107U - Flexible display cover plate, flexible display module and flexible display device - Google Patents
Flexible display cover plate, flexible display module and flexible display device Download PDFInfo
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- CN210349107U CN210349107U CN201921853656.2U CN201921853656U CN210349107U CN 210349107 U CN210349107 U CN 210349107U CN 201921853656 U CN201921853656 U CN 201921853656U CN 210349107 U CN210349107 U CN 210349107U
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Abstract
An embodiment of the utility model provides a flexible display apron, flexible display module assembly and flexible display device have solved among the prior art flexible display screen body and have shown the technical problem that became invalid easily after folding many times. The utility model provides a flexible display apron, it sets up one deck flexible coating to show between the regional flexible substrate of buckling and the hardened coating of apron at the flexibility, when the flexible display apron is folding or when buckling, flexible coating can disperse the stress of buckling, thereby reduce the fracture probability of the hardened coating in bending zone, can also guarantee simultaneously that flexible display apron is under the impact of falling the ball or falling the pen, the impact of the impact force of falling the ball or falling the pen to flexible glass layer has been reduced, thereby the probability of quality problems appears in the flexible display screen body has been reduced.
Description
Technical Field
The utility model relates to a show technical field, concretely relates to flexible display apron, flexible display module assembly and flexible display device.
Background
With the development of display technology, the application field of display devices is now very wide, and therefore, the requirements for various performances of the screen body are gradually increased. The flexible screen has characteristics such as can buckle, utilizes display device's flexibility, and people can buckle or fold display device to it is convenient to carry and use display device for people.
At present, a colorless polyimide flexible cover plate (CPI cover plate) with a hardening coating is generally used for replacing a traditional glass cover plate for a flexible display product, and when the flexible display product is bent or folded, the hardening coating on the CPI cover plate cracks due to repeated bending, so that the quality problem of the flexible display product is caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a flexible display apron, flexible display module assembly and flexible display device have solved among the prior art flexible apron and folded the technical problem that crackle appears easily many times.
In order to make the objects, technical means and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
According to an aspect of the utility model, an embodiment of the utility model provides a flexible display apron, flexible display apron has the district of can buckling, flexible display apron includes: a flexible substrate; and a hardened coating disposed on one side of the flexible substrate; and a flexible coating is arranged between the flexible substrate and the hardened coating and covers the bendable region of the flexible substrate.
In an embodiment of the present invention, the thickness of the flexible coating is within a range of 1-10 um.
In an embodiment of the invention, the thickness of the flexible coating is 5 um.
In an embodiment of the invention, the material of the flexible coating comprises a nanosol.
In an embodiment of the invention, the flexible coating covers the entire flexible substrate.
In an embodiment of the present invention, the flexible display cover further includes a protection layer: the protective layer is arranged on the side, away from the hardened coating, of the flexible substrate.
In an embodiment of the present invention, the thickness of the flexible substrate is within a range of 30-80 um, and the thickness of the protective layer is within a range of 2-5 um.
In an embodiment of the present invention, the thickness of the hardened coating is within a range of 5-40 um.
In an embodiment of the present invention, the material of the hardened coating includes: comprises a polysiloxane hard coating, an acrylic hard coating or a mixture of the two.
As a second aspect of the present invention, an embodiment of the present invention further provides a flexible display module, including the flexible display cover plate as described above.
As a third aspect of the present invention, an embodiment of the present invention provides a flexible display device, including the flexible display module as described above.
The embodiment of the utility model provides a flexible display apron, flexible substrate and the hardened coating that shows the apron at the flexibility and buckle and set up the flexible coating of one deck between regional flexible substrate and the hardened coating, when the flexible display apron is folding or when buckling, the flexible coating can disperse the stress of buckling, thereby reduce the fracture probability of the hardened coating in bending zone, can also guarantee simultaneously that flexible display apron is under the impact of falling the ball or falling the pen, the impact of the impact force of falling the ball or falling the pen to flexible glass layer has been reduced, thereby the probability of quality problems appears in the flexible display screen body has been reduced.
Drawings
Fig. 1 is a schematic structural diagram of a flexible display cover according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flexible display cover according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a flexible display cover according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a flexible display module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a flexible display module according to an embodiment of the present invention.
Detailed Description
As described in the background art, the technical problem that the quality of the flexible display device is prone to be affected after being folded for many times in the prior art is found by the research of the inventor, and the problem is caused because the cover plate in the flexible display device is often a colorless polyimide flexible cover plate (CPI cover plate) with a hardened coating instead of a conventional glass-based cover plate, and when the flexible display device is bent, the flexible cover plate is prone to be plastically deformed during bending due to the inherent viscoelasticity and creep characteristics of the flexible cover plate, so that when the flexible display device is folded for many times, fatigue cracks occur in the bending area of the flexible cover plate, and the fatigue cracks of the cover plate are mainly represented by the fracture cracks of the hardened coating.
Based on this, the utility model provides a flexible display apron sets up one deck flexible coating between the regional flexible substrate of buckling and the hardened coating of flexible display apron, when flexible display device is folding or when buckling, flexible coating can disperse the stress of buckling, thereby reduce the fracture probability of the hardened coating in the district of buckling, can also guarantee simultaneously that flexible display apron is under the impact of falling the ball or falling the pen, the impact of the impact force of falling the ball or falling the pen to flexible glass layer has been reduced, thereby the probability that quality problems appears in flexible display device has been reduced.
Specifically, the utility model provides a flexible display apron, flexible display apron has the district of can buckling, flexible display apron includes: a flexible substrate; and a hardened coating disposed on one side of the flexible substrate; and a flexible coating is arranged between the flexible substrate and the hardened coating and covers the bendable region of the flexible substrate.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 shows that an embodiment of the present invention provides a structural schematic diagram of a flexible display cover plate, as shown in fig. 1, the flexible display cover plate has a bendable region, and the flexible display cover plate includes: a flexible substrate 2; and a hardened coating 4 provided on one side of the flexible substrate 2; wherein, still set up a flexible coating 3 between flexible substrate 2 and hardened coating 4, flexible coating 3 covers flexible region 21 of flexible substrate 2. The embodiment of the utility model provides a pair of flexible display apron, flexible substrate and the hardened coating in the regional flexible substrate of buckling at flexible display apron set up one deck flexible coating between, when flexible display apron is folding or when buckling, flexible coating can disperse the stress of buckling, thereby reduce the fracture probability of the hardened coating in bending zone, simultaneously can also guarantee flexible display apron under the impact of falling the ball or falling the pen, the impact of the impact force of falling the ball or falling the pen to display device and flexible glass who is located flexible display apron below has been reduced, thereby the probability that quality problems appears in the flexible display screen body has been reduced, flexible coating only covers the bending zone of flexible substrate simultaneously, the production technology is simplified, and the production efficiency is improved.
It should be understood that the flexible display cover may have a plurality of bending regions for bending the flexible display cover, and thus, whenever there is a bending region, there is a corresponding flexible coating covering the flexible substrate of the bending region, as shown in fig. 1 or fig. 2.
In an embodiment of the invention, the flexible display cover further comprises a protective layer 1 arranged on the side of the flexible substrate 2 remote from the hardened coating 4. As shown in fig. 2. When the flexible display cover plate is folded or bent, the protective layer can protect the flexible substrate, the probability that the flexible substrate is broken or cracked under the action of stress is reduced, and therefore the probability that quality problems occur in the flexible display screen body is reduced.
The utility model discloses an in the embodiment, flexible coating covers whole flexible substrate 2, as shown in fig. 3, when flexible coating covers whole flexible substrate, when the flexible display screen body is at the in-process of buckling, no matter be the district of buckling or the non-district of buckling, the flexible coating in the flexible display apron all can be alleviated the stress of buckling to can reduce the fracture probability of flexible apron in the flexible display screen body, and then reduced the flexible display screen body and taken place the probability of quality problems.
In an embodiment of the present invention, the material of the flexible coating 3 includes a nanosol. The nano sol is a type of carbon nano material, has extremely large specific surface area, extremely high specific surface energy, surface selective adsorption property and excellent environmental stability, and still has singularities such as high strength, high toughness and the like under the high-temperature condition; the product can be stored for three years at normal temperature and pressure without agglomeration. Therefore, when the flexible display cover plate is folded or bent, the flexible coating of the high-toughness nano sol can well disperse bending stress, so that the fracture probability of the hardened coating in a bending area is reduced, and meanwhile, the impact of the impact force of falling balls or falling pens on the flexible glass layer is reduced under the impact of falling balls or falling pens of the flexible display cover plate, so that the probability of quality problems of the flexible display screen body is reduced.
It should be understood that the material of the flexible coating 3 may be not only a nano sol, but also other flexible materials, such as optically clear adhesive (hereinafter referred to as OCA), which has the characteristics of being colorless and transparent, having a light transmittance of over 90%, having good adhesion strength, being curable at room temperature or at intermediate temperature, and having small curing shrinkage. When the material of flexible coating is OCA glue, when flexible display apron is folding or is buckled, OCA glue not only can play the dispersion stress of buckling, reduces the effect of the fracture probability of the hardened coating in bending zone, can also play the flexible coating with hardened coating and the effectual bonding of flexible substrate together, increased the adhesion between layer, reduce the flexible display apron when folding or buckle the probability of splitting between the rete.
The utility model discloses an embodiment, in order to make the thickness of whole flexible display cover plate be unlikely to too thick, do not influence the whole thickness of flexible display screen, consequently, the thickness of hardened coating 4 is in 5 ~ 40um within range. The material of the hardened coating 4 may include a hard coating of a polysiloxane-based hard coating, an acryl-based hard coating, or a mixed system of the two. The main effect of the hardened coating 4 is to increase the overall stiffness of the flexible display cover plate, and when the flexible display cover plate is impacted by a falling ball or a falling pen, the impact of the impact force of the falling ball or the falling pen on the display device and the flexible glass under the flexible display cover plate can be reduced, so that the probability of quality problems of the flexible display screen body is reduced.
The utility model discloses an embodiment, the thickness of flexible coating 3 is in 1 ~ 10um within range, preferred 5um, and the thickness of flexible coating 3 is in 1 ~ 10um within range, not only can disperse the stress of buckling to reduce the fracture probability of the sclerosis coating in the district of buckling, can not make whole flexible display cover plate thickness too big moreover.
The utility model discloses an embodiment, the thickness of flexible substrate 2 is in 30 ~ 80um within range, the thickness of protective layer 1 is in 2 ~ 5um within range.
The thickness of the flexible coating 3 is not independent, and the thickness of the flexible coating 3 is matched with the thickness of the hard coating 4, the thickness of the flexible substrate 2 and the thickness of the protective layer 1, so that the flexible display cover plate can disperse bending stress during bending, the fracture probability of a bending area is reduced, and the overall thickness of the flexible display cover plate can be kept not to be large.
On the other hand, the embodiment of the present invention further provides a display module, which includes a substrate 102, a functional layer 101, and a cover plate layer 100, which are stacked together, as shown in fig. 4. The functional layer 101 may be, for example, an OLED layer including a light emitting layer and the like. The structure of the cover layer 100 adopts the structure of the flexible display cover as described above. According to the utility model discloses display module assembly sets up the flexible coating of one deck between the regional flexible substrate of buckling and the hardened coating of flexible display apron, when flexible display apron is folding or when buckling, flexible coating can disperse the stress of buckling, thereby reduce the fracture probability of the hardened coating in bending zone, can also guarantee simultaneously that flexible display apron is under the impact of falling ball or falling pen, the impact of the impact force of falling ball or falling pen to the functional layer that is located flexible display apron below has been reduced, thereby the probability that quality problems appears in flexible display module assembly has been reduced.
To this whole of the display module, in an embodiment of the present invention, as shown in fig. 5, the display module includes a substrate 102, a light-emitting driving circuit layer 103, a functional layer 101, a polarizer 104, an OCA layer 105, a touch layer 106, and a cover plate layer 100, which are sequentially stacked. An OCA layer 105 is also disposed between the touch layer 106 and the cover layer 100.
It should be understood that, besides the functional layer 101 and the cover plate layer 100, the display module may further include other film layers, for example, the display module may have a structure as shown in fig. 5, and the embodiment of the present invention does not limit the kind of the film layer included in the display module except the functional layer 101 and the cover plate layer 100, as long as the display module can normally operate.
In another aspect, the present invention further provides a display device, which can be a terminal display device such as a mobile phone, a tablet or a computer, and the display device includes the above display module. According to the utility model discloses a display device, because flexible display apron in the display module assembly buckle and set up one deck flexible coating between regional flexible substrate and the hardened coating, when flexible display apron is folding or when buckling, flexible coating can disperse the stress of buckling, thereby reduce the fracture probability of the hardened coating in bending zone, can also guarantee simultaneously that flexible display apron is under the impact of falling the ball or falling the pen, the impact of the impact force of falling the ball or falling the pen to the functional layer that is located flexible display apron below has been reduced, thereby the probability that quality problems appears in flexible display device has been reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents and the like included in the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A flexible display cover having a bendable region, comprising:
a flexible substrate; and the number of the first and second groups,
a hardened coating disposed on one side of the flexible substrate;
and a flexible coating is arranged between the flexible substrate and the hardened coating and covers the bendable region of the flexible substrate.
2. The display cover according to claim 1, wherein the flexible coating has a thickness in the range of 1-10 um.
3. The display cover according to claim 1, wherein the material of the flexible coating comprises a nanosol.
4. The flexible display cover of claim 1, wherein the flexible coating covers the entire flexible substrate.
5. The display cover sheet of any one of claims 1 to 4, further comprising a protective layer:
the protective layer is arranged on one side of the flexible substrate far away from the hardened coating.
6. The display cover according to claim 5, wherein the flexible substrate has a thickness in the range of 30-80 um, and the protective layer has a thickness in the range of 2-5 um.
7. The display cover according to any one of claims 1 to 4, wherein the hardened coating has a thickness in the range of 5 to 40 um.
8. The display cover according to any one of claims 1 to 4, wherein the material of the hardened coating comprises: comprises a polysiloxane hard coating, an acrylic hard coating or a mixture of the two.
9. A flexible display module comprising the flexible display cover of any one of claims 1-8.
10. A flexible display device comprising the flexible display module according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853656.2U CN210349107U (en) | 2019-10-31 | 2019-10-31 | Flexible display cover plate, flexible display module and flexible display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853656.2U CN210349107U (en) | 2019-10-31 | 2019-10-31 | Flexible display cover plate, flexible display module and flexible display device |
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| Publication Number | Publication Date |
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| CN210349107U true CN210349107U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921853656.2U Active CN210349107U (en) | 2019-10-31 | 2019-10-31 | Flexible display cover plate, flexible display module and flexible display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990180A (en) * | 2021-11-08 | 2022-01-28 | 京东方科技集团股份有限公司 | Flexible cover plate, preparation method thereof and display panel |
| CN114333594A (en) * | 2022-01-04 | 2022-04-12 | 京东方科技集团股份有限公司 | Cover plate structure of flexible display module, flexible display module and flexible display equipment |
-
2019
- 2019-10-31 CN CN201921853656.2U patent/CN210349107U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990180A (en) * | 2021-11-08 | 2022-01-28 | 京东方科技集团股份有限公司 | Flexible cover plate, preparation method thereof and display panel |
| CN113990180B (en) * | 2021-11-08 | 2023-12-01 | 京东方科技集团股份有限公司 | Flexible cover plate, manufacturing method thereof and display panel |
| CN114333594A (en) * | 2022-01-04 | 2022-04-12 | 京东方科技集团股份有限公司 | Cover plate structure of flexible display module, flexible display module and flexible display equipment |
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