CN110599909B - Foldable display panel and display device - Google Patents
Foldable display panel and display device Download PDFInfo
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- CN110599909B CN110599909B CN201910911841.0A CN201910911841A CN110599909B CN 110599909 B CN110599909 B CN 110599909B CN 201910911841 A CN201910911841 A CN 201910911841A CN 110599909 B CN110599909 B CN 110599909B
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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 invention provides a foldable display panel and a display panel.A rigid film layer on one side of the display panel is connected with a flexible film layer on the other side of the display panel through connecting pieces arranged on two sides of a folding line of the display panel, and transverse stress for flattening and recovering the flexible film layer after being folded is provided by the rigid film layer so as to improve the flattening and recovering speed of the flexible film layer, so that the flattening and recovering speed of the whole display panel is improved, and the use experience of a user is improved; simultaneously, be connected rigid film layer and flexible film layer and set up, also can reduce folding process and resume the in-process transverse stress of flat state to the damage of flexible film layer to improve the life of flexible film layer.
Description
Technical Field
The invention relates to the field of display panels, in particular to a foldable display panel and a display device structure.
Background
Along with the demand of users to large-screen display panel is higher and higher, but collapsible display panel comes to bear and go up, in order to make the user have better use to experience, but collapsible display panel not only need guarantee its folding reliability, still need possess good exhibition flattening recovery performance. However, foldable display panel all utilizes the pliability ability of flexible display module to realize foldingly to flattening after folding resumes also to rely on the characteristic of flexible display module material itself, but flexible display module is flexible material, and the effort between the flexible material molecule is less, and the effect that consequently folding flattening after folding resumes is not good enough, has reduced user's use experience.
Disclosure of Invention
In view of this, embodiments of the present invention are directed to provide a foldable display panel and a display device, in which a rigid film layer on one side of the display panel is connected to a flexible film layer on the other side of the display panel through a connecting element, and the rigid film layer provides a transverse stress for flattening and recovering the flexible film layer after being folded, so as to improve the flattening and recovering speed of the entire display panel, and solve the problems of poor flattening and recovering effects and poor user experience.
According to an aspect of the present invention, an embodiment of the present invention provides a foldable display panel, including: the rigid film layer and the flexible film layer are arranged in a stacked mode; and a plurality of connecting members connecting the rigid film layer and the flexible film layer; the plurality of connecting pieces are respectively arranged on two sides of the folding line of the display panel.
In an embodiment, a first extending portion parallel to the flexible film layer is arranged at one end of the connecting piece connected with the flexible film layer, the first extending portion is fixedly connected with the connecting piece main body, a second extending portion perpendicular to the flexible film layer is arranged at one end of the first extending portion far away from the connecting piece main body, the second extending portion is fixedly connected with the first extending portion, and a groove structure matched with the second extending portion is arranged on the flexible film layer.
In an embodiment, one end of the connecting piece connected with the flexible film layer is a buckle structure, and a protrusion structure matched with the buckle structure is arranged on the flexible film layer.
In one embodiment, the connecting member is bonded to the flexible film layer.
In one embodiment, the display panel includes a plurality of flexible film layers, and the connecting member penetrates and connects all the flexible film layers.
In one embodiment, the connector comprises a rigid material.
In one embodiment, the connecting member and the rigid film are made of the same material.
In one embodiment, the connecting member and the rigid film layer are of an integrated structure.
In one embodiment, the rigid membrane layer comprises a sheet of steel.
According to another aspect of the present invention, an embodiment of the present invention provides a foldable display device, including the foldable display panel as described in any one of the above.
According to the foldable display panel and the display device provided by the embodiment of the invention, the rigid film layer on one side of the display panel is connected with the flexible film layer on the other side of the display panel through the connecting pieces arranged on two sides of the folding line of the display panel, and the rigid film layer is used for providing transverse stress for flattening and recovering the flexible film layer after being folded, so that the flattening recovery speed of the flexible film layer is increased, the flattening recovery speed of the whole display panel is increased, and the use experience of a user is improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a foldable display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional view of a foldable display panel according to another embodiment of the present application along a stacking direction.
Fig. 3 is a schematic cross-sectional view of a foldable display panel according to another embodiment of the present application along a stacking direction.
Fig. 4 is a schematic top view of a foldable display panel according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Further, in the exemplary embodiments, since the same reference numerals denote the same components having the same structure or the same steps of the same method, if an embodiment is exemplarily described, only a structure or a method different from the already described embodiment is described in other exemplary embodiments.
Throughout the specification and claims, when one element is described as being "connected" to another element, the one element may be "directly connected" to the other element or "electrically connected" to the other element through a third element. Furthermore, unless explicitly described to the contrary, the term "comprising" and its corresponding terms should only be taken as including the stated features, but should not be taken as excluding any other features.
Along with the demand of the usable floor area of display screen is bigger and bigger, and too big display screen is inconvenient to carry again, in order to solve this contradiction, flexible display module assembly and flexible display panel are produced at the mercy of fortune. The flexible display module adopts flexible material to make, utilizes flexible material's pliability, can realize buckling or folding of flexible module, and wherein flexible material can only set up in the regional of buckling of flexible module, realizes that flexible module only buckles and folds in the regional area of buckling, also can set up flexible material on whole flexible module to realize that flexible module a plurality of positions or total position buckle and fold.
However, whether the flexible material is disposed only in the bending region or disposed on the entire flexible module, the flexible module needs to be flattened again after being bent or folded to display the content in the largest display region. However, the flexible module usually depends on its own performance after being bent or folded, and the folded or folded flat state is recovered by the recovery in-situ characteristics of the material of the flexible module, that is, the transverse stress required for recovering the flat state after being bent or folded is provided by the interaction force between the material molecules. However, the interaction force between molecules of the flexible material is weak, and thus, the speed of restoring the flat state by only depending on the properties of the flexible material itself is slow, and even after a long or multiple folding operations, the flexible material cannot completely restore the flat state.
In order to solve the above problems, an embodiment of the present application provides a foldable display panel and a display device, in which a rigid film layer is disposed on one side of a stacking direction of a display panel, and the rigid film layer is connected to a flexible film layer on the other side of the stacking direction of the display panel through a plurality of connecting members, and after a flexible module is folded, the rigid film layer provides a transverse stress for restoring the flexible film layer to a flattened state, so as to accelerate the speed of restoring the whole flexible module to the flattened state, thereby improving user experience; simultaneously, be connected rigid film layer and flexible film layer and set up, also can reduce folding process and resume the in-process transverse stress of flat state to the damage of flexible film layer to improve the life of flexible film layer.
The following describes a specific structure and an implementation manner of a foldable display panel provided in an embodiment of the present application in detail with reference to the accompanying drawings:
fig. 1 is a schematic cross-sectional view of a foldable display panel according to an embodiment of the present disclosure. As shown in fig. 1, the foldable display panel includes: the film comprises a rigid film layer 1 and a flexible film layer 2 which are arranged in a stacked manner; and a plurality of connecting members 3 connecting the rigid film layer 1 and the flexible film layer 2; wherein, still include other retes (the rete that does not have the shading as shown in fig. 1) between rigid rete 1 and the flexible rete 2, a plurality of connecting pieces 3 set up respectively in the both sides of display panel's folding line. The rigid film 1 is generally disposed on one side of the foldable display panel near the end surface to support and protect other films of the foldable display panel, and in one embodiment, the rigid film 1 may be a steel sheet. The rigidity of the steel sheet is utilized to support other film layers and can resist external impact force to protect other film layers, and meanwhile, the steel sheet also has certain bending performance and cannot influence the folding movement of the foldable display panel. It should be understood that, in the embodiment of the present application, different materials of the rigid film layer 1 may be selected according to different practical application scenarios, as long as the selected material of the rigid film layer 1 can meet the requirement of providing the transverse stress required by the flexible film layer 2 to restore the flattened state, and the specific material of the rigid film layer 1 is not limited in the embodiment of the present application.
In an embodiment, the foldable display panel may comprise a plurality of layers of flexible film 2, and the flexible film 2 furthest from the rigid film 1 is connected to the rigid film 1 by a connector 3. The flexible film layer 2 with the farthest rigid film layer 1 is connected with the flexible film layer 2, so that the transverse stress required by the flexible film layer 2 in the state of recovering the flat state can be provided, and other film layers between the rigid film layer 1 and the flexible film layer 2 connected with the rigid film layer 1 can be quickly recovered to the flat state under the driving of the rigid film layer 1 and the flexible film layer 2 connected with the rigid film layer 1, of course, the flexible film layer 2 connected with the rigid film layer 1 can be selected according to the requirements of practical application scenes, and the specific position of the flexible film layer 2 is not limited in the embodiment of the application.
According to the foldable display panel provided by the embodiment of the invention, the rigid film layer 1 on one side of the display panel is connected with the flexible film layer 2 on the other side of the display panel through the connecting pieces 3 arranged on two sides of the folding line of the display panel, and the rigid film layer 1 is used for providing transverse stress for flattening and recovering the flexible film layer 2 after being folded so as to improve the flattening recovery speed of the flexible film layer 2, so that the flattening recovery speed of the whole display panel is improved, and the use experience of a user is improved; simultaneously, be connected rigid film layer 1 and flexible film layer 2 and set up, also can reduce folding process and resume the in-process transverse stress of flat state to the damage of flexible film layer 2 to improve the life of flexible film layer 2.
Fig. 2 is a schematic cross-sectional view of a foldable display panel according to another embodiment of the present application along a stacking direction. As shown in fig. 2, a first extending portion 31 parallel to the flexible film 2 may be disposed at one end of the connection element 3 connected to the flexible film 2, the first extending portion 31 is fixedly connected to the connection element main body 30, a second extending portion 311 perpendicular to the flexible film 2 is disposed at one end of the first extending portion 31 away from the connection element main body 30, the second extending portion 311 is fixedly connected to the first extending portion 31, and a groove structure 21 matched with the second extending portion 311 may be disposed on the flexible film 2. Because the required stress direction of the flexible film layer 2 of the folding back flattening state is horizontal (the direction parallel to the flexible film layer 2), therefore, one end of connecting the connecting piece 3 with the flexible film layer 2 is provided with the first extending part 31 and the second extending part 311, the second extending part 311 is matched with the groove structure 21 on the flexible film layer 2, so as to strengthen the connection between the connecting piece 3 and the flexible film layer, thereby strengthening the connection between the rigid film layer 1 and the flexible film layer 2, and enabling the rigid film layer 1 to better provide the transverse stress required by the flexible film layer 2. In an embodiment, the rigid film layer 1 may be disposed on the folding outer side of the foldable display panel. By arranging the rigid film layer 1 on the folding outer side, the rigid film layer 1 can provide pulling force to realize the recovery of the foldable display panel to the flat state in the process of recovering the flat state after folding.
Fig. 3 is a schematic cross-sectional view of a foldable display panel according to another embodiment of the present application along a stacking direction. As shown in fig. 3, the end of the connecting element 3 connected to the flexible film 2 may be a snap structure 32, and the flexible film 2 may be provided with a protrusion structure 22 cooperating with the snap structure 32. Set up buckle structure 32 through the one end of connecting flexible rete 2 at connecting piece 3 to the protruding structure 22 that sets up on the cooperation flexible rete 2 strengthens being connected of connecting piece 3 and flexible rete, thereby strengthens being connected between rigidity rete 1 and the flexible rete 2, makes the required transverse stress of the flexible rete 2 of better providing of rigidity rete 1.
In one embodiment, the connecting member 3 and the flexible film layer 2 may be bonded. It should be understood that the specific connection form of the connection element 3 and the flexible film layer 2 in the embodiment of the present application may be selected according to different practical application scenarios, as long as the selected connection form of the connection element 3 and the flexible film layer 2 can satisfy the lateral stress required by the rigid film layer 1 to provide the flattened state of the flexible film layer 2, and the specific connection form of the embodiment of the present application for the connection element 3 and the flexible film layer 2 includes, but is not limited to, the three types.
In an embodiment, the display panel may include a plurality of flexible film layers 2, and the connection member 3 may penetrate and connect all of the flexible film layers 2. Generally, the display panel includes a plurality of film layers, and in order to realize the foldability of the display panel, the plurality of film layers are made of flexible materials, so as to better ensure that the display panel is quickly restored to the flat state after being folded, the connecting members 3 penetrate through all the flexible film layers 2 and are connected with all the flexible film layers 2, so as to realize that the rigid film layers 1 are connected with all the flexible film layers 2, the rigid film layers 1 provide the transverse stress of all the flexible film layers 2 in the flat state after being folded, thereby further accelerating the speed of quickly restoring the flat state of the display panel after being folded, and all the flexible film layers 2 are connected with the rigid film layers 1, so as to ensure that all the flexible film layers 2 keep consistency along with the rigid film layers 1 in the processes of being folded and restored to the flat state, and avoid stress differences between different flexible film layers 2 caused by different transverse stresses on different flexible film layers 2, the falling-off between different flexible film layers 2 is avoided, and the bonding strength between the flexible film layers 2 is further improved. It should be understood that, in the embodiment of the present application, part or all of the flexible film layers 2 may be selected to be connected with the connecting elements 3 according to different practical application scenarios, as long as the selected flexible film layers 2 can meet the requirement that the foldable display panel is integrally restored to the flat state and ensure that each of the flexible film layers 2 does not fall off, and the number and specific positions of the specific flexible film layers 2 connected with the connecting elements 3 are not limited in the embodiment of the present application. It should be further understood that the connection form of the connection element 3 and each flexible film layer 2 may also be selected according to the requirement of the actual application scenario, and may include the above three connection forms, or other fixed connection forms, as long as the connection strength between the flexible film layer 2 and the connection element 3 can be ensured, and the specific connection form between the connection element 3 and each flexible film layer 2 is not limited in the embodiment of the present application.
In an embodiment, the connecting member 3 may comprise a rigid material. Because the efficiency of the flexible material in the aspect of stress transmission is lower than that of the rigid material, in order to better provide the transverse stress required by the folded and flattened state of the flexible film layer 2, the material of the connecting piece 3 can be selected as the rigid material, so that the transverse stress provided by the rigid film layer 1 can be better transmitted to the flexible film layer 2; meanwhile, the connecting piece 3 made of rigid materials can be connected with each flexible film layer 2 better, so that the bonding performance between the flexible film layers 2 is improved, and certain supporting force and protection can be provided.
In one embodiment, the connecting element 3 and the rigid film 1 may be made of the same material. In a further embodiment, the connection element 3 and the rigid film layer 1 may be of a unitary structure. Because the joint degree between the same material is higher, consequently, can set up connecting piece 3 and rigidity rete 1 and be same material to guarantee connecting piece 3 and rigidity rete 1's joint degree, thereby better realization rigidity rete 1 provides the required transverse stress of flexible rete 2 through connecting piece 3. In order to further improve the degree of combination between the connecting member 3 and the rigid film layer 1 and simplify the manufacturing process and difficulty, the connecting member 3 and the rigid film layer 1 may be integrated. It should be understood that, in the embodiment of the present application, a connection manner of the rigid film layer 1 and the connection element 3 may be selected according to different practical application scenarios, as long as the selected connection manner of the rigid film layer 1 and the connection element 3 can meet the fixed connection of the rigid film layer 1 and the connection element 3, so as to achieve that the rigid film layer 1 provides the transverse stress required for the flexible film layer 2 to recover to the flattened state after being folded by the connection element 3, for example, a fixed connection manner such as welding may be used, and the specific connection manner of the rigid film layer 1 and the connection element 3 is not limited in the embodiment of the present application.
Fig. 4 is a schematic top view of a foldable display panel according to an embodiment of the present application. As shown in fig. 4, the foldable display panel may include an even number of the connection members 3 and be symmetrically disposed at both sides of the folding line of the display panel. In order to improve the connection strength between the connecting element 3 and the flexible film layer 2 and the rigid film layer 1, the contact area between the connecting element 3 and the flexible film layer 2 and the rigid film layer 1 can be improved, for example, the width of the connecting element 3 and the number of the connecting elements 3 can be increased, the connection strength between the connecting element 3 and the flexible film layer 2 and the rigid film layer 1 can be effectively improved, and the stress of the flexible film layer 2 can be more uniform. It should be understood that the width and the number of the connecting elements 3 in the embodiments of the present application may be selected according to different practical application scenarios, as long as the width and the number of the connecting elements 3 are selected to transfer the transverse stress provided by the rigid film layer 1 to the flexible film layer 2, and the specific width and the specific number of the connecting elements 3 in the embodiments of the present application are not limited.
An embodiment of the present invention further provides a foldable display device, including the foldable display panel as described in any one of the above. According to the foldable display device provided by the embodiment of the invention, the rigid film layer 1 on one side of the display panel is connected with the flexible film layer 2 on the other side of the display panel through the connecting pieces 3 arranged on two sides of the folding line of the display panel, and the rigid film layer 1 is used for providing transverse stress for flattening and recovering the flexible film layer 2 after being folded, so that the flattening recovery speed of the flexible film layer 2 is increased, the flattening recovery speed of the whole display panel is increased, and the use experience of a user is improved; simultaneously, be connected rigid film layer 1 and flexible film layer 2 and set up, also can reduce folding process and resume the in-process transverse stress of flat state to the damage of flexible film layer 2 to improve the life of flexible film layer 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (6)
1. A foldable display panel, comprising:
the rigid film layer and the flexible film layer are arranged in a stacked mode; and
a plurality of tie members connecting the rigid film layer and the flexible film layer, the tie members comprising a rigid material;
the connecting piece is fixedly connected with the rigid film layer;
one end of the connecting piece, which is connected with the flexible film layer, is provided with a first extending part parallel to the flexible film layer, the first extending part is fixedly connected with a main body of the connecting piece, one end of the first extending part, which is far away from the main body of the connecting piece, is provided with a second extending part perpendicular to the flexible film layer, the second extending part is fixedly connected with the first extending part, and the flexible film layer is provided with a groove structure matched with the second extending part; or
One end of the connecting piece, which is connected with the flexible film layer, is of a buckle structure, and a convex structure matched with the buckle structure is arranged on the flexible film layer; or
The connecting piece is bonded with the flexible film layer;
the plurality of connecting pieces are respectively arranged on two sides of the folding line of the display panel, so that the rigid film layer provides transverse stress to the flexible film layer in the flattening process.
2. The foldable display panel of claim 1, wherein the display panel comprises a plurality of layers of the flexible film, and wherein the connector extends through and connects all of the layers of the flexible film.
3. The foldable display panel of claim 1, wherein the connecting element and the rigid film are made of the same material.
4. The foldable display panel of claim 3, wherein the connector is a unitary structure with the rigid film layer.
5. The foldable display panel of claim 1, wherein the rigid film layer comprises a sheet of steel.
6. A foldable display device, characterized in that it comprises a foldable display panel according to any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910911841.0A CN110599909B (en) | 2019-09-25 | 2019-09-25 | Foldable display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910911841.0A CN110599909B (en) | 2019-09-25 | 2019-09-25 | Foldable display panel and display device |
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| CN110599909A CN110599909A (en) | 2019-12-20 |
| CN110599909B true CN110599909B (en) | 2021-11-23 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111179759B (en) * | 2020-02-12 | 2022-01-28 | 京东方科技集团股份有限公司 | Folding structure and folding display device |
| CN114694493A (en) * | 2020-12-30 | 2022-07-01 | 华为技术有限公司 | Folding display terminal |
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