CN111816068A - Foldable display screen and display device - Google Patents
Foldable display screen and display device Download PDFInfo
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- CN111816068A CN111816068A CN202010618664.XA CN202010618664A CN111816068A CN 111816068 A CN111816068 A CN 111816068A CN 202010618664 A CN202010618664 A CN 202010618664A CN 111816068 A CN111816068 A CN 111816068A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The application discloses foldable display screen and display device, wherein the foldable display screen comprises a support film, a luminous layer, a touch substrate, a polaroid, a covering plate and a buffer layer, the buffer layer and other modules of the foldable display screen are integrated into a whole, and the other modules of the foldable display screen are any one of the support film, the touch substrate, the polaroid and the covering plate; through the buffer layer with other module integrations as an organic whole of collapsible display screen. Therefore, the buffering performance of the foldable display screen can be improved, and the foldable display screen is prevented from being irreparably damaged when falling; but also can not influence the bending performance of the foldable display screen, so that the foldable display screen still has good bending performance.
Description
Technical Field
The application relates to the technical field of display, in particular to a foldable display screen and a display device.
Background
The foldable display screen needs to have good bending performance, and after the foldable display screen is bent for more than a certain number of times, the display screen cannot have any problems of film falling, poor display and the like. In addition, the foldable display screen needs to have certain hardness and abrasion resistance to prevent the foldable display screen from being irreparably damaged when falling, thereby affecting the use of consumers.
At present, the buffer performance of the foldable display screen is mainly improved by adding a buffer material into the structure of the foldable display screen, and the buffer material generally has good elasticity and can be prepared by a foaming or coating method. The buffer material is added into the foldable display screen, so that the damage to the foldable display screen when the foldable display screen falls can be effectively reduced, but after the buffer material is added, the whole thickness of the foldable display screen is increased, and the improvement of the whole bending performance of the foldable display screen is not facilitated.
Therefore, how to improve the buffering performance of the foldable display screen without affecting the bending performance of the foldable display screen is a challenge to be overcome by panel manufacturers all over the world.
Disclosure of Invention
The embodiment of the application provides a foldable display screen and a display device, and the buffering performance of the foldable display screen can be improved on the premise of not influencing the bending performance of the foldable display screen.
The embodiment of the application provides a foldable display screen, includes:
a support film;
a light emitting layer disposed on the support film;
a touch substrate disposed on the light emitting layer;
the polaroid is arranged on the touch substrate;
a cover plate; the covering plate is arranged on the polarizer; wherein,
the foldable display screen further comprises a buffer layer, the buffer layer and other modules of the foldable display screen are integrated into a whole, wherein the other modules of the foldable display screen are any one of the support film, the touch substrate, the polarizer and the covering plate.
In the foldable display screen that this application embodiment provided, all connect through optical cement layer between arbitrary two adjacent modules, nevertheless the buffer layer with the buffer layer is integrated as an organic whole module direct contact, in order to reduce foldable display screen's thickness.
In the foldable display screen provided by the embodiment of the application, the buffer layer is integrated with the support film, wherein the buffer layer is arranged on the support film.
In the foldable display screen provided by the embodiment of the application, the buffer layer and the polarizer are integrated into a whole, wherein the buffer layer is arranged on the polarizer.
In the foldable display screen provided by the embodiment of the application, the buffer layer is integrated with the polarizer and the cover plate, wherein the buffer layer is arranged between the polarizer and the cover plate.
In the foldable display screen provided by the embodiment of the application, the buffer layer is integrated with the touch substrate, and the buffer layer is arranged on the touch substrate
In the foldable display screen provided by the embodiment of the application, the light transmittance of the buffer layer is greater than 90%, and the haze of the buffer layer is less than 2%.
In the foldable display screen provided by the embodiment of the application, the material of the buffer layer includes one or a combination of a polyurethane material and an acrylic material.
In the foldable display screen provided by the embodiment of the application, the surface roughness of the buffer layer is less than 0.5 micrometer.
The application also provides a display device which comprises the foldable display screen.
In the foldable display screen and the display device that this application provided, through the buffer layer with other module integrations of foldable display screen as an organic whole. Therefore, the buffering performance of the foldable display screen can be improved, the foldable display screen has certain hardness and wear resistance, and the foldable display screen is prevented from being irreparably damaged when falling, so that the use of a consumer is influenced; and the bending performance of the foldable display screen cannot be influenced, so that the foldable display screen still has good bending performance, and after the foldable display screen is bent for more than a certain number of times, the display screen cannot have any problems of film falling, poor display and the like.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic view of a first structure of a foldable display screen provided in an embodiment of the present application.
Fig. 2 is a second structural schematic diagram of a foldable display screen provided in an embodiment of the present application.
Fig. 3 is a schematic diagram of a third structure of a foldable display screen according to an embodiment of the present application.
Fig. 4 is a fourth structural schematic diagram of a foldable display screen provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1 to 4, an embodiment of the present application provides a foldable display screen 10, including a supporting film 101, a light emitting layer 102 disposed on the supporting film 101, a touch substrate 103 disposed on the light emitting layer 102, a polarizer 104 disposed on the touch substrate 103, a covering plate 105 disposed on the polarizer 104, a buffer layer 106, and an optical adhesive layer 107, where the buffer layer 106 is integrated with other modules of the foldable display screen 10, and the other modules of the foldable display screen 10 are any one of the supporting film 101, the touch substrate 103, the polarizer 104, and the covering plate 105; the adjacent modules in the foldable display screen 10 are all connected by the optical adhesive layer 107, but the buffer layer 106 is in direct contact with the modules integrated with the buffer layer 106.
As can be understood, the buffer layer 106 has good elasticity, so that the buffer layer 106 is added to the foldable display screen 10, the buffer performance of the foldable display screen 10 can be improved, and the damage to the screen of the foldable display screen when the foldable display screen falls can be reduced.
In one embodiment, the material of the buffer layer 106 includes one or a combination of a polyurethane material and an acrylic material.
In one embodiment, the elastic modulus of the buffer layer 106 is in a range of 2 to 200 MPa, and the Poisson's ratio of the buffer layer 106 is in a range of 0.3 to 0.5.
Wherein, in one embodiment, the thickness of the buffer layer 106 is 50 to 100 μm.
It can be understood that the thickness of the buffer layer 106 is not too large, and therefore, the thickness of too many foldable display screens 10 is not increased by adding the buffer layer 106 into the foldable display screen 10, so that the bending performance of the foldable display screen 10 is not greatly affected, and after the foldable display screen 10 is bent for a certain number of times, the phenomena of film falling and poor display cannot occur on the screen of the foldable display screen 10.
Wherein, it can be understood that adjacent modules in the foldable display screen 10 are connected through the optical adhesive layer 107, mainly in order to improve the strength of connection between the modules in the foldable display screen 10, and prevent the shedding phenomenon between the modules in the foldable display screen 10 in the bending process of the foldable display screen 10.
It can be understood that the buffer layer 106 and the module integrated with the buffer layer 106 are in direct contact, which can reduce the usage of the optical adhesive layer 107, thereby achieving the effect of reducing the thickness of the foldable display screen 10.
In addition, the bending performance of the foldable display screen 10 is related to the thickness of the foldable display screen 10, and the thinner the thickness of the foldable display screen 10 is, the better the bending performance of the foldable display screen 10 is; the thicker the bending property of the foldable display screen 10, the worse the bending property of the foldable display screen 10. Therefore, the thickness of the foldable display screen 10 is reduced, and the folding performance of the foldable display screen 10 can be improved.
It can be understood that, because the surface flatness of the buffer layer 106 is good and the surface roughness of the buffer layer 106 is less than 0.5 μm, the buffer layer 106 can be integrated with other modules in the foldable display screen 10 by direct coating.
Specifically, please refer to fig. 1, in which fig. 1 is a schematic view of a first structure of a foldable display screen according to an embodiment of the present disclosure. As shown in fig. 1, the foldable display screen 10 provided in the embodiment of the present application includes a support film 101, a light emitting layer 102 disposed on the support film 101, a touch substrate 103 disposed on the light emitting layer 102, a polarizer 104 disposed on the touch substrate 103, a cover plate 105 disposed on the polarizer 104, and a buffer layer 1061, where the buffer layer 1061 is integrated with the support film 101, and the buffer layer 1061 is disposed on the support film 101; the adjacent modules in the foldable display screen 10 are connected by the optical adhesive layer 107, but the buffer layer 1061 is in direct contact with the supporting film 101.
Here, it is understood that when the buffer layer 1061 is integrated with the support film 101, the buffer layer 1061 is located between the light emitting layer 102 and the support film 101. Since light is emitted from the light emitting layer 102, the light passes through the touch substrate 103, the polarizer 104, and the like in sequence to the outside; the buffer layer 1061 is disposed between the light-emitting layer 102 and the support film 101, so that light emitted from the light-emitting layer 102 does not pass through the buffer layer 1061; the buffer layer 1061 does not affect the light emitted from the light emitting layer 102. Therefore, the buffer layer 1061 does not need to reach an optical transparency level, where reaching the optical transparency level of the buffer layer 1061 means that the buffer layer 1061 is in a transparent state, the transmittance of the buffer layer 1061 is greater than 90%, and the haze of the buffer layer 1061 is less than 2%.
It is to be understood that, when the buffer layer 1061 is integrated with the support film 101 and the buffer layer 1061 is disposed on the support film 101, the buffer layer 1061 is coated on the support film 101 by a direct coating method, and then an optical adhesive layer 107 is further coated on the buffer layer 1061. The optical adhesive layer 107 is coated on the buffer layer 1061 to connect the buffer layer 1061 and the light-emitting layer 102 together, so as to improve the connection strength between the modules of the foldable display screen 10, prevent the buffer layer 1061 and the light-emitting layer 102 from falling off during the bending process of the foldable display screen 10, and further improve the bending performance of the foldable display screen 10.
Among them, in one embodiment, when the buffer layer 1061 is integrated with the support film 101, the buffer layer 1061 may also be disposed under the support film 101.
Specifically, please refer to fig. 2, fig. 2 is a second structural schematic diagram of the foldable display screen according to the embodiment of the present application. As shown in fig. 2, the foldable display screen 10 provided in the embodiment of the present application includes a support film 101, a light emitting layer 102 disposed on the support film 101, a touch substrate 103 disposed on the light emitting layer 102, a polarizer 104 disposed on the touch substrate 103, a cover plate 105 disposed on the polarizer 104, and a buffer layer 1062, where the buffer layer 1062 is integrated with the polarizer 104, and the buffer layer 1062 is disposed on the polarizer 104; the adjacent modules in the foldable display screen 10 are connected by the optical adhesive layer 107, but the buffer layer 1062 is in direct contact with the polarizer 104.
It is understood that when the buffer layer 1061 is integrated with the polarizer 104, the buffer layer 1062 is disposed on the polarizer 104, and the buffer layer 1062 is disposed between the light-emitting layer 102 and the cover plate 105. Since light is emitted from the light-emitting layer 102, the light passes through the touch substrate 103, the polarizer 104, the cover plate 105, and the like in sequence to the outside; when the buffer layer 1062 is located between the light-emitting layer 102 and the cover plate 105, the light emitted from the light-emitting layer 102 needs to pass through the buffer layer 1062; the buffer layer 1062 may affect the light emitted from the light emitting layer 102. Therefore, the buffer layer 1062 needs to reach an optical transparency level, where reaching the optical transparency level of the buffer layer 1062 means that the buffer layer 1062 is in a transparent state, the transmittance of the buffer layer 1062 is greater than 90%, and the haze of the buffer layer 1062 is less than 2%.
It is to be understood that, when the buffer layer 1061 is integrated with the polarizer 104 and the buffer layer 1062 is disposed on the polarizer 104, the buffer layer 1062 needs to be coated on the polarizer 104 by a direct coating method, and then an optical adhesive layer 107 needs to be coated on the buffer layer 1062. The optical adhesive layer 107 is coated on the buffer layer 1062 to connect the buffer layer 1062 and the cover plate 105 together, so as to improve the strength of the connection between the modules in the foldable display screen 10, prevent the buffer layer 1062 and the cover plate 105 from falling off during the bending process of the foldable display screen 10, and further improve the bending performance of the foldable display screen 10.
In one embodiment, when the buffer layer 1062 is integrated with the polarizer 104, the buffer layer 1062 may be disposed under the polarizer 104.
Specifically, please refer to fig. 3, fig. 3 is a schematic diagram of a third structure of the foldable display screen according to the embodiment of the present application. As shown in fig. 3, the foldable display screen 10 provided in the embodiment of the present application includes a support film 101, a light emitting layer 102 disposed on the support film 101, a touch substrate 103 disposed on the light emitting layer 102, a polarizer 104 disposed on the touch substrate 103, a cover plate 105 disposed on the polarizer 104, and a buffer layer 1063, where the buffer layer 1063 is integrated with the polarizer 104 and the cover plate 105, and the buffer layer 1063 is disposed between the polarizer 104 and the cover plate 105; the adjacent modules in the foldable display screen 10 are connected by the optical adhesive layer 107, but the buffer layer 1063 is in direct contact with the polarizer 104 and the cover plate 105.
Here, it can be understood that the buffer layer 1063 shown in fig. 3 is the same as the buffer layer 1062 shown in fig. 2, and the light emitted from the light emitting layer 102 needs to pass through the buffer layer 1063; the buffer layer 1063 may affect the light emitted from the light emitting layer 102. Therefore, the buffer layer 1063 needs to reach an optical transparency level, where reaching the optical transparency level of the buffer layer 1063 means that the buffer layer 1063 is in a transparent state, the transmittance of the buffer layer 1063 is greater than 90%, and the haze of the buffer layer 1063 is less than 2%.
It is understood that the buffer layer 1063 is integrated with the polarizer 104 and the cover plate 105, wherein the buffer layer 1063 is disposed between the polarizer 104 and the cover plate 105. Therefore, the polarizer 104 is formed first, then the buffer layer 1063 is formed on the polarizer 104 by direct coating, and finally the cover plate 105 is formed on the buffer layer 1063.
Therefore, the foldable display screen 10 shown in fig. 3 is coated with less optical glue layer 107 than the foldable display screen 10 shown in fig. 2, thereby achieving the effect of reducing the thickness of the foldable display screen 10. The bending performance of the foldable display screen 10 is related to the thickness of the foldable display screen 10, and the thinner the thickness of the foldable display screen 10 is, the better the bending performance of the foldable display screen 10 is; the thicker the bending property of the foldable display screen 10, the worse the bending property of the foldable display screen 10. Therefore, the foldable display screen 10 shown in fig. 3 has a better folding performance than the foldable display screen 10 shown in fig. 2.
Specifically, please refer to fig. 4, where fig. 4 is a fourth structural schematic diagram of the foldable display screen provided in the embodiment of the present application. As shown in fig. 4, the foldable display screen 10 provided in the embodiment of the present application includes a supporting film 101, a light emitting layer 102 disposed on the supporting film 101, a touch substrate 103 disposed on the light emitting layer 102, a polarizer 104 disposed on the touch substrate 103, a cover plate 105 disposed on the polarizer 104, and a buffer layer 1063, where the buffer layer 1064 is integrated with the touch substrate 103, and the buffer layer 1064 is disposed on the touch substrate 103; the adjacent modules in the foldable display screen 10 are connected through the optical adhesive layer 107, but the buffer layer 1064 is in direct contact with the touch substrate 103.
Here, it can be understood that the buffer layer 1064 shown in fig. 4 is the same as the buffer layer 1062 shown in fig. 2, and the light emitted from the light emitting layer 102 needs to pass through the buffer layer 1064; the buffer layer 1064 may affect the light emitted from the light emitting layer 102. Therefore, the buffer layer 1064 needs to reach an optical transparency level, where reaching the optical transparency level of the buffer layer 1064 means that the buffer layer 1064 is in a transparent state, the transmittance of the buffer layer 1064 is greater than 90%, and the haze of the buffer layer 1064 is less than 2%.
When the buffer layer 1064 is integrated with the touch substrate 103 and the buffer layer 1064 is disposed above the touch substrate 103, the buffer layer 1064 is coated on the touch substrate 103, then the touch pattern processing is performed, and finally, the optical adhesive layer 107 is coated on the buffer layer 1064.
The reason why the buffer layer 1064 is coated on the touch substrate 103 and then the touch pattern processing is performed is that if the touch pattern processing is performed first, the surface of the touch substrate 103 connected to the buffer layer 1064 becomes uneven, and the buffer layer 1064 has better surface smoothness and surface roughness less than 0.5 μm, so that the buffer layer 1064 cannot be well combined with the touch substrate 103. In the process of bending the foldable display screen 10, the buffer layer 1064 and the touch substrate 103 are likely to fall off, thereby affecting the bending performance of the foldable display screen 10. Therefore, the buffer layer 1064 is coated on the touch substrate 103, and then the touch pattern processing is performed, so that the buffer layer 1064 and the touch substrate 103 are prevented from falling off during the bending process of the foldable display screen 10, and the bending performance of the foldable display screen 10 is improved.
It can be understood that the optical adhesive layer 107 is coated on the buffer layer 1064 to connect the buffer layer 1064 and the polarizer 104 together, so as to improve the strength of the connection between the modules in the foldable display screen 10, prevent the polarizer 104 of the buffer layer 1064 from falling off during the bending process of the foldable display screen 10, and further improve the bending performance of the foldable display screen 10.
In the foldable display screen that this application provided, through buffer layer and other module integrations of foldable display screen as an organic whole. Therefore, the buffering performance of the foldable display screen can be improved, the foldable display screen has certain hardness and wear resistance, and the foldable display screen is prevented from being irreparably damaged when falling, so that the use of a consumer is influenced; and the bending performance of the foldable display screen cannot be influenced, so that the foldable display screen still has good bending performance, and after the foldable display screen is bent for more than a certain number of times, the display screen cannot have any problems of film falling, poor display and the like.
The present application further provides a display device, wherein the display device includes the foldable display screen described in the above embodiments, and therefore, the description thereof is omitted here.
In the display device that this application provided, through buffer layer and other module integrations of collapsible display screen as an organic whole. Therefore, the buffering performance of the foldable display screen can be improved, the foldable display screen has certain hardness and wear resistance, and the foldable display screen is prevented from being irreparably damaged when falling, so that the use of a consumer is influenced; and the bending performance of the foldable display screen cannot be influenced, so that the foldable display screen still has good bending performance, and after the foldable display screen is bent for more than a certain number of times, the display screen cannot have any problems of film falling, poor display and the like.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foldable display screen and the display device provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A foldable display screen, comprising:
a support film;
a light emitting layer disposed on the support film;
a touch substrate disposed on the light emitting layer;
the polaroid is arranged on the touch substrate;
a cover plate; the covering plate is arranged on the polarizer; wherein,
the foldable display screen further comprises a buffer layer, the buffer layer and other modules of the foldable display screen are integrated into a whole, wherein the other modules of the foldable display screen are any one of the support film, the touch substrate, the polarizer and the covering plate.
2. The foldable display screen of claim 1, wherein any two adjacent modules are connected by an optical adhesive layer, but the buffer layer is in direct contact with the modules integrated with the buffer layer to reduce the thickness of the foldable display screen.
3. The foldable display screen of claim 1, wherein the buffer layer is integrated with the support film, wherein the buffer layer is disposed on the support film.
4. The foldable display of claim 1, wherein the buffer layer is integrated with the polarizer, wherein the buffer layer is disposed on the polarizer.
5. The foldable display of claim 4, wherein the buffer layer is integrated with the polarizer and the cover plate, wherein the buffer layer is disposed between the polarizer and the cover plate.
6. The foldable display screen of claim 1, wherein the buffer layer is integrated with the touch substrate and the buffer layer is disposed on the touch substrate.
7. The foldable display screen of any one of claims 4 to 6, wherein the buffer layer has a light transmission of greater than 90% and a haze of less than 2%.
8. The foldable display screen of claim 1, wherein the material of the buffer layer comprises one or a combination of a polyurethane material and an acrylic material.
9. The foldable display screen of claim 1, wherein the buffer layer has a surface roughness of less than 0.5 microns.
10. A display device, characterized in that it comprises a foldable display screen according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618664.XA CN111816068A (en) | 2020-07-01 | 2020-07-01 | Foldable display screen and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010618664.XA CN111816068A (en) | 2020-07-01 | 2020-07-01 | Foldable display screen and display device |
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| CN111816068A true CN111816068A (en) | 2020-10-23 |
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| CN202010618664.XA Pending CN111816068A (en) | 2020-07-01 | 2020-07-01 | Foldable display screen and display device |
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Application publication date: 20201023 |