CN111653203B - Flexible display panel and display device - Google Patents
Flexible display panel and display device Download PDFInfo
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- CN111653203B CN111653203B CN202010623662.XA CN202010623662A CN111653203B CN 111653203 B CN111653203 B CN 111653203B CN 202010623662 A CN202010623662 A CN 202010623662A CN 111653203 B CN111653203 B CN 111653203B
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a flexible display panel and a display device, and relates to the technical field of display, wherein the flexible display panel comprises a bending area and a non-bending area connected with the bending area; the flexible display panel includes: a substrate base plate; the display layer is positioned on one side of the substrate base plate; the cover plate is positioned on one side of the display layer far away from the substrate base plate; the lower protective layer is positioned on one side of the substrate base plate far away from the display layer; the cover plate is provided with at least one first elastic partition part in the bending area, and/or the lower protection layer is provided with at least one second elastic partition part in the bending area. The invention solves the problem that the edge of the flexible display panel in the prior art is easy to peel off the film layer when being bent.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display panel and a display device.
Background
The development of the conventional flat panel display device is becoming mature, and the flexible display panel will become the mainstream of the display field by virtue of its characteristics of lightness, thinness, flexibility and impact resistance. Among them, an OLED (Organic Light Emitting Display) has excellent properties such as fast response speed, wide viewing angle, high brightness, low power consumption, and self-Light Emitting device, and has bending resistance, and thus has become one of the hot points of research in the field of flexible Display in recent years.
In the existing flexible display technology, when the flexible display panel is bent, the bending angle of the edge of the flexible display panel is close to or exceeds 90 degrees, and the stress applied to the adhesive layer at the edge of the flexible display panel is too large, so that the adhesive layer is easy to fail, and the film layer at the edge of the flexible display panel is peeled off.
In the prior art, a scheme of reducing the thickness of a film layer connected with a glue layer is adopted, and the method can reduce the deformation of the glue layer, but reduce the surface hardness and the damage resistance of the display panel.
Disclosure of Invention
In view of this, the present invention provides a flexible display panel and a display device, so as to solve the problem in the prior art that peeling of a film layer is likely to occur when an edge of the flexible display panel is bent.
In a first aspect, the present invention provides a flexible display panel, which includes a bending region and a non-bending region connected to the bending region; the flexible display panel includes: a substrate base plate; the display layer is positioned on one side of the substrate base plate; the cover plate is positioned on one side of the display layer far away from the substrate base plate; the lower protective layer is positioned on one side of the substrate base plate far away from the display layer; the cover plate is provided with at least one first elastic partition part in the bending area, and/or the lower protective layer is provided with at least one second elastic partition part in the bending area.
In a second aspect, the present invention provides a display device comprising the above flexible display panel.
Compared with the prior art, the flexible display panel and the display device provided by the invention at least realize the following beneficial effects:
the flexible display panel comprises a bending area, a non-bending area connected with the bending area and a substrate base plate, wherein the substrate base plate is a flexible base plate, a display layer is positioned on one side of the substrate base plate, a cover plate is positioned on one side of the display layer far away from the substrate base plate, a lower protection layer is positioned on one side of the substrate base plate far away from the display layer, and the cover plate is provided with at least one first elastic partition part in the bending area; or the lower protective layer is provided with at least one second elastic partition part in the bending area; or the cover plate is provided with at least one first elastic partition part in the bending area, and the lower protective layer is provided with at least one second elastic partition part in the bending area. First elasticity cuts off portion and plays the effect that elasticity cut off to the apron to produce the effect that the segmentation was buckled when making the part that the apron is located the bending zone buckle, and then reduce the deformation of the glue film in the bending zone of flexible display panel, effectively improved the condition that flexible display panel edge takes place the rete and peels off. The second elasticity cuts off the effect that portion played the elasticity to cut off to lower protective layer to the part that makes lower protective layer be located the district of buckling produces the effect that the segmentation was buckled when buckling, and then reduces the deformation of the glue film in the district of buckling of flexible display panel, has effectively improved the condition that flexible display panel edge takes place the rete and peels off.
Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a flexible display panel according to the present invention;
FIG. 2 is a cross-sectional view of the flexible display panel of FIG. 1 taken along A-A';
FIG. 3 is a further cross-sectional view along A-A' of the flexible display panel of FIG. 1;
FIG. 4 is another cross-sectional view along A-A' of the flexible display panel of FIG. 1;
FIG. 5 is another cross-sectional view of the flexible display panel of FIG. 1 along A-A';
FIG. 6 is another cross-sectional view along A-A' of the flexible display panel of FIG. 1;
FIG. 7 is another cross-sectional view along A-A' of the flexible display panel of FIG. 1;
FIG. 8 is another cross-sectional view along A-A' of the flexible display panel of FIG. 1;
FIG. 9 is another cross-sectional view along A-A' of the flexible display panel of FIG. 1;
fig. 10 is a schematic plan view of a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic plan structure view of a flexible display panel according to the present invention, fig. 2 is a cross-sectional view of the flexible display panel shown in fig. 1 along a-a ', fig. 3 is another cross-sectional view of the flexible display panel shown in fig. 1 along a-a ', fig. 4 is another cross-sectional view of the flexible display panel shown in fig. 1 along a-a ', referring to fig. 1-4, this embodiment provides a flexible display panel including a bending region Z and a non-bending region F connected to the bending region Z, fig. 1-4 illustrate a structure view of the flexible display panel in a planar state, and the bending region Z of the flexible display panel can be bent away from a light-emitting surface of the flexible display panel; alternatively, the number of the bending zones Z may be two or more, and the embodiment is not particularly limited.
The flexible display panel provided by the embodiment comprises:
a base substrate 10;
a display layer 20 on one side of the base substrate 10;
the cover plate 30 is positioned on one side of the display layer 20 far away from the substrate base plate 10;
a lower protective layer 40 located on one side of the substrate base plate 10 far away from the display layer 20;
the cover plate 30 is provided with at least one first elastic partition 51 in the bending zone Z and/or the lower protective layer 40 is provided with at least one second elastic partition 52 in the bending zone Z.
Specifically, the flexible display panel provided in this embodiment includes a bending area Z and a non-bending area F connected to the bending area Z, the number and the positions of the bending area Z and the non-bending area F are not limited in this embodiment, the flexible display panel may include a plurality of bending areas Z and a plurality of non-bending areas F, and a bending axis (not shown in the figure) is disposed in each bending area Z.
The flexible display panel further includes a substrate 10, the substrate 10 is a flexible substrate, the display layer 20 is located on one side of the substrate 10, the cover plate 30 (not filled in the drawing) is located on one side of the display layer 20 away from the substrate 10, the lower protection layer 40 (not filled in the drawing) is located on one side of the substrate 10 away from the display layer 20, and the cover plate 30 is provided with at least one first elastic partition 51 (refer to fig. 2) in the bending region Z; or the lower protective layer 40 is provided with at least one second elastic partition 52 (refer to fig. 3) in the bending zone Z; or the cover plate 30 is provided with at least one first elastic partition 51 in the bending zone Z, and the lower protection layer 40 is provided with at least one second elastic partition 52 in the bending zone Z (refer to fig. 4). First elasticity wall 51 plays the effect of elasticity wall to apron 30 to make apron 30 be located the effect that the segmentation was buckled when the part of bending zone Z buckles, and then reduce the deformation of the glue film in the bending zone Z of flexible display panel, effectively improved the condition that flexible display panel edge takes place the rete and peels off. The second elastic partition part 52 plays a role of elastic partition for the lower protection layer 40, so that the part of the lower protection layer 40 located in the bending area Z is bent to generate a segmented bending effect, deformation of a glue layer in the bending area Z of the flexible display panel is reduced, and the condition that the film layer is peeled off at the edge of the flexible display panel is effectively improved.
The flexible display panel provided by the embodiment does not need to make a thinning design on the cover plate or/and the lower protective layer, and the surface hardness and the damage resistance of the flexible display panel are not reduced. In addition, the flexible display panel provided by the embodiment does not need to change the structure and the material of the adhesive layer, and has the advantages of simple manufacturing process and low production cost.
Referring to fig. 1 and 4, optionally, at least two first elastic partition portions 51 are arranged in the cover plate 30, and/or at least two second elastic partition portions 52 are arranged in the lower protective layer 40, and the distances between two adjacent first elastic partition portions 51 and two adjacent second elastic partition portions 52 are both d; wherein the content of the first and second substances,
0.5mm≤d≤10mm。
specifically, at least two first elastic partition portions 51 are arranged in the cover plate 30, the distance between every two adjacent first elastic partition portions 51 is d, d is greater than or equal to 0.5mm and less than or equal to 10mm, when the distance between every two adjacent first elastic partition portions 51 is less than 0.5mm, the arrangement of the first elastic partition portions 51 in the cover plate 30 is too close, so that the production cost is increased, when the distance between every two adjacent first elastic partition portions 51 is greater than 10mm, the effect of relieving the deformation of the glue layer in the bending area Z of the flexible display panel is small, when the distance between every two adjacent first elastic partition portions 51 is greater than or equal to 0.5mm and less than or equal to 10mm, the production process is simplified while the deformation of the glue layer in the bending area Z of the flexible display panel is effectively reduced, and the production cost is reduced. At least two second elastic partition parts 52 are arranged in the lower protection layer 40, the distance between every two adjacent second elastic partition parts 52 is d, d is larger than or equal to 0.5mm and smaller than or equal to 10mm, when the distance between every two adjacent second elastic partition parts 52 is smaller than 0.5mm, the arrangement of the second elastic partition parts 52 in the lower protection layer 40 is too close, the production cost is increased, when the distance between every two adjacent second elastic partition parts 52 is larger than 10mm, the effect of relieving the deformation of the glue layer in the bending area Z of the flexible display panel is smaller, when the distance between every two adjacent second elastic partition parts 52 is larger than or equal to 0.5mm and smaller than or equal to 10mm, the deformation of the glue layer in the bending area Z of the flexible display panel is effectively reduced, meanwhile, the production process is simplified, and the production cost is reduced.
It can be understood that fig. 4 exemplarily shows that four first elastic partition portions 51 are disposed in the cover plate 30, and four second elastic partition portions 52 are disposed in the lower protective layer 40, in other embodiments of the present invention, the number of the first elastic partition portions 51 in the cover plate 30 and the number of the second elastic partition portions 52 in the lower protective layer 40 may also be set to other values according to actual production needs, and the present invention is not described herein again.
With continued reference to fig. 1 and 4, optionally, wherein the number of first and second elastic partitions 51, 52 is the same.
Specifically, when the bending zone Z of the flexible display panel is bent, the bending angles of the cover plate 30 and the lower protective layer 40 tend to be consistent, when the first elastic partition part 51 is arranged in the cover plate 30, and the second elastic partition part 52 is arranged in the lower protective layer 40, the number of the first elastic partition part 51 and the number of the second elastic partition part 52 are the same, so that the tool design in the processing process of the flexible display panel is facilitated to be simplified, and the production cost is reduced.
With continued reference to fig. 1 and fig. 4, optionally, a perpendicular projection of the first elastic partition 51 on the light exit surface of the flexible display panel overlaps a perpendicular projection of the second elastic partition 52 on the light exit surface of the flexible display panel.
Specifically, when the cover plate 30 is provided with the first elastic partition 51 and the lower protective layer 40 is provided with the second elastic partition 52, the first elastic partition 51 and the second elastic partition 52 are the same in number, and the vertical projection of the first elastic partition 51 on the light-emitting surface of the flexible display panel is overlapped with the vertical projection of the second elastic partition 52 on the light-emitting surface of the flexible display panel, so that the tooling design in the processing process of the flexible display panel is further simplified, and the production cost is reduced.
Fig. 5 is another cross-sectional view of the flexible display panel shown in fig. 1 along a-a', referring to fig. 1 and 5, and optionally, a perpendicular projection of the first elastic partition 51 on the light exit surface of the flexible display panel does not overlap a perpendicular projection of the second elastic partition 52 on the light exit surface of the flexible display panel.
Specifically, when the cover plate 30 is provided with the first elastic partition 51 and the lower protective layer 40 is provided with the second elastic partition 52, the first elastic partition 51 and the second elastic partition 52 are the same in number, and the vertical projection of the first elastic partition 51 on the light-emitting surface of the flexible display panel is not overlapped with the vertical projection of the second elastic partition 52 on the light-emitting surface of the flexible display panel, that is, the first elastic partition 51 and the second elastic partition 52 are arranged at intervals in the bending zone Z, so that the deformation of the glue layer in the bending zone Z of the flexible display panel is further reduced, and the condition that the film layer is peeled off at the edge of the flexible display panel is improved.
With continued reference to fig. 1 and fig. 4, optionally, in a direction perpendicular to the light emitting surface of the flexible display panel, the first elastic partition 51 penetrates at least the cover plate 30, and the second elastic partition 52 penetrates at least the lower protection layer 40.
Specifically, in the direction of the light-emitting surface perpendicular to the flexible display panel, the first elastic partition part 51 at least penetrates through the cover plate 30, so that the first elastic partition part 51 plays an elastic partition role in the cover plate 30, the part of the cover plate 30 located in the bending area Z is bent to generate a segmented bending effect, deformation of a glue layer in the bending area Z of the flexible display panel is reduced, and the condition that the film layer is peeled off at the edge of the flexible display panel is effectively improved. On the direction of the light-emitting surface of the perpendicular to flexible display panel, the second elastic partition part 52 at least penetrates through the lower protective layer 40, so that the second elastic partition part 52 plays a role of elastic partition for the lower protective layer 40, the part of the lower protective layer 40 located in the bending area Z is bent to generate a segmented bending effect, deformation of a glue layer in the bending area Z of the flexible display panel is reduced, and the condition that the film layer is peeled off at the edge of the flexible display panel is effectively improved.
With continued reference to fig. 1 and 4, optionally, wherein the first and second elastic partitions 51 and 52 comprise at least an elastic layer 53, the elastic layer 53 comprises a transparent elastic material having an elastic modulus in the range of 1MPa to 500 MPa.
Specifically, the first elastic partition 51 and the second elastic partition 52 at least include an elastic layer 53, and the elastic layer 53 includes a transparent elastic material, so as to reduce the influence on the light emitted from the light emitting surface of the flexible display panel. And the elastic modulus of the elastic material ranges from 1MPa to 500MPa, and the first elastic partition part 51 and the second elastic partition part 52 have excellent elasticity. For example, the material of the elastic layer 53 may be transparent silicone, PTFE (poly-tetrafluoroethylene), pmma (poly methacrylate), pdms (poly dimethylsiloxane), or the like.
With continued reference to fig. 1 and 4, optionally, the elastic layer 53 further comprises a thermoset material.
Specifically, the elastic layer 53 further includes a thermosetting material, and the elastic layer 53 may be formed by filling the elastic material by a thermosetting method. It should be noted that, in other embodiments of the present invention, the elastic layer 53 may also be formed by other methods, for example, the elastic layer 53 may be formed on other film layers by a roll coating method, a screen coating method, a spraying method, or a slit coating method, which is not described in detail herein.
Fig. 6 is another cross-sectional view of the flexible display panel shown in fig. 1 along a-a', referring to fig. 1 and 6, and optionally, wherein the flexible display panel further comprises a hard coating layer 60, the hard coating layer 60 is located on a side of the cover plate 30 away from the substrate base plate 10, and the first elastic partition 51 further penetrates through the hard coating layer 60.
In particular, with continued reference to fig. 1 and 6, the flexible display panel further includes a hard coating layer 60, and the hard coating layer 60 is advantageous for improving the surface hardness and damage resistance of the flexible display panel.
With continued reference to fig. 1 and 6, optionally, wherein the first elastic partition 51 further comprises a hardness layer 54, the hardness layer 54 is located on a side of the elastic layer 53 away from the base substrate 10, the hardness layer 54 comprises a material having an elastic modulus greater than 1 GPa.
Specifically, the first elastic partition 51 further includes a hardness layer 54, the hardness layer 54 includes a material with an elastic modulus greater than 1GPa, and the hardness layer 54 is beneficial to improving the surface hardness and the damage resistance of the flexible display panel. The hard coat layer 54 and the hard coat layer 60 may be separately manufactured. Referring to fig. 4, instead of separately providing the hard layer 54 in the first elastic partition 51, a surface of the first elastic partition 51 on a side away from the substrate base plate 10 may contact the hard coating layer 60, i.e., the first elastic partition 51 may directly share the hard coating layer 60 with the cap plate 30.
With reference to fig. 1 and fig. 4, optionally, the heights of the first elastic partition 51 and the second elastic partition 52 are both H, and the widths of the surfaces of the first elastic partition 51 and the second elastic partition 52 close to the light emitting surface of the flexible display panel are both L; wherein the content of the first and second substances,
10μm≤H≤200μm，10μm≤L≤1mm。
specifically, the heights of the first elastic partition 51 and the second elastic partition 52, and the surface widths of the first elastic partition 51 and the second elastic partition 52 close to the light emitting surface of the flexible display panel can be set according to actual production requirements, for example, the heights of the first elastic partition 51 and the second elastic partition 52 are greater than or equal to 10 μm and less than or equal to 200 μm, and the surface widths of the first elastic partition 51 and the second elastic partition 52 close to the light emitting surface of the flexible display panel are greater than or equal to 10 μm and less than or equal to 1 mm.
Fig. 7 is another cross-sectional view of the flexible display panel shown in fig. 1 along a-a', referring to fig. 1 and 7, optionally, wherein the flexible display panel further comprises an optical adhesive layer 70, and the optical adhesive layer 70 is located between the cover plate 30 and the display layer 20; the first elastic partition 51 penetrates through the optical adhesive layer 70 in a direction perpendicular to the light emitting surface of the flexible display panel.
Specifically, flexible display panel is still including being located the optical cement layer 70 between apron 30 and the display layer 20, in the direction of the play plain noodles of perpendicular to flexible display panel, first elasticity wall 51 runs through optical cement layer 70, first elasticity wall 51 plays the effect of elasticity wall to being located optical cement layer 70 simultaneously, the deformation of every section optical cement layer 70 is completely independent, when buckling is taken place in flexible display panel's bending zone Z, effectively reduce the deformation of optical cement layer 70 in flexible display panel's bending zone Z, the condition that the rete peeled off has taken place in the flexible display panel edge has effectively been improved.
Fig. 8 is another cross-sectional view of the flexible display panel shown in fig. 1 along a-a', referring to fig. 1 and 8, and optionally, wherein the first elastic partition 51 comprises a first extension portion 511, and the first extension portion 511 and the elastic layer 53 in the first elastic partition 51 are made of the same material and by the same process;
the first extending portion 511 is located on a side of the first elastic partition 51 and close to one side of the optical adhesive layer 70, and the first extending portion 511 is attached to the optical adhesive layer 70.
Specifically, the first elastic partition 51 includes a first extending portion 511, the first extending portion 511 is located on a side surface of the first elastic partition 51 and is close to one side of the optical adhesive layer 70, the first extending portion 511 and the elastic layer 53 can be made of the same material by the same process, that is, the first extending portion 511 and the elastic layer 53 in the first elastic partition 51 are integrally formed, the first extending portion 511 and the optical adhesive layer 70 are attached to each other, so that the bonding strength of the first elastic partition 51 and the optical adhesive layer 70 is effectively improved, and the film peeling at the edge of the flexible display panel is further improved.
Alternatively, the first extension portions 511 of the first elastic partition portions 51 may be connected to form a unitary film structure.
With continued reference to fig. 1 and 7, optionally, wherein the flexible display panel further comprises at least one pressure sensitive adhesive layer 80, the pressure sensitive adhesive layer 80 is located on a side of the lower protective layer 40 away from and/or close to the base substrate 10;
the second elastic partition 52 penetrates at least one layer of pressure sensitive adhesive layer 80 in a direction perpendicular to the light emitting surface of the flexible display panel.
Specifically, the flexible display panel further includes a pressure sensitive adhesive layer 80 located on one side of the lower protective layer 40 far away from and/or close to the substrate base plate 10, in the direction perpendicular to the light emitting surface of the flexible display panel, the second elastic partition portion 52 at least penetrates through one pressure sensitive adhesive layer 80, the second elastic partition portion 52 plays a role of elastic partition for the pressure sensitive adhesive layer 80 located, the deformation of each section of pressure sensitive adhesive layer 80 is completely independent, when the bending area Z of the flexible display panel is bent, the deformation of the pressure sensitive adhesive layer 80 in the bending area Z of the flexible display panel is effectively reduced, and the condition that the film layer is peeled off at the edge of the flexible display panel is effectively improved.
It should be noted that fig. 7 exemplarily shows that the pressure sensitive adhesive layers 80 are disposed on both sides of the lower protective layer 40 away from and close to the substrate base plate 10, and the second elastic partition portion 52 penetrates through the two pressure sensitive adhesive layers 80 in the direction perpendicular to the light emitting surface of the flexible display panel.
With continued reference to fig. 1 and 8, optionally, wherein the second elastic partition 52 includes at least one second extension 521, the second extension 521 and the elastic layer 53 in the second elastic partition 52 are made of the same material and by the same process;
in the direction perpendicular to the light emitting surface of the flexible display panel, the second extending portion 521 is located on the side surface of the second elastic partition portion 52, the second extending portion 521 is located on the side of the second elastic partition portion 52 away from and/or close to the substrate base plate 10, and at least one second extending portion 521 is attached to the pressure sensitive adhesive layer 80.
Specifically, the second elastic partition 52 includes at least one second extending portion 521, in a direction perpendicular to the light emitting surface of the flexible display panel, the second extending portion 521 is located on a side surface of the second elastic partition 52, the second extending portion 521 is located on a side of the second elastic partition 52 away from and/or close to the substrate base plate 10, the second extending portion 521 and the elastic layer 53 in the second elastic partition 52 are made of the same material by the same process, that is, the second extending portion 521 and the elastic layer 53 in the second elastic partition 52 are integrally formed, the second extending portion 521 is attached to the pressure-sensitive adhesive layer 80, the bonding strength between the second extending portion 521 and the pressure-sensitive adhesive layer 80 is effectively improved, and the occurrence of film peeling at the edge of the flexible display panel is further improved.
It should be noted that fig. 8 exemplarily shows that a second extending portion 521 is disposed on a side of the second elastic partition 52 away from the substrate 10, and the second extending portion 521 is attached to the pressure sensitive adhesive layer 80 located on a side away from the substrate 10, in other embodiments of the present invention, a second extending portion 521 may also be disposed on a side of the second elastic partition 52 close to the substrate 10 in the flexible display panel, and the second extending portion 521 is attached to the pressure sensitive adhesive layer 80 located on a side close to the substrate 10, which is not described herein again.
With continued reference to fig. 1 and 2, optionally, wherein the refractive index of the first elastic partition 51 is smaller than that of the cover plate 30, and the area of the surface of the first elastic partition 51 on the side away from the optical adhesive layer 70 is larger than that of the surface on the side close to the optical adhesive layer 70;
the light K enters the first elastic partition 51 through the interface between the first elastic partition 51 and the cover plate 30.
Specifically, the area of the surface of the first elastic partition 51 away from the optical adhesive layer 70 is greater than the area of the surface of the first elastic partition 51 close to the optical adhesive layer 70, when the refractive index of the first elastic partition 51 is smaller than the refractive index of the cover plate 30, the number of light rays totally reflected through the interface between the first elastic partition 51 and the cover plate 30 is effectively reduced, so that the light rays K enter the first elastic partition 51 through the interface between the first elastic partition 51 and the cover plate 30, the influence of the first elastic partition 51 on the display of the flexible display panel is effectively reduced, and the display effect of the flexible display panel is improved.
Optionally, an interface between the first elastic partition and the cover plate is an inclined plane or a curved surface, and the curved surface is a curved surface recessed toward the optical adhesive layer.
Specifically, with reference to fig. 1 and fig. 2, the area of the surface of the first elastic partition 51 away from the optical adhesive layer 70 is larger than the area of the surface of the first elastic partition 51 close to the optical adhesive layer 70, and the interface between the first elastic partition 51 and the cover plate 30 is an inclined surface, so that the light K enters the first elastic partition 51 through the interface between the first elastic partition 51 and the cover plate 30. Fig. 9 is another cross-sectional view of the flexible display panel shown in fig. 1 along a-a ', referring to fig. 1 and 9, an area of a surface of the first elastic partition 51 on a side away from the optical adhesive layer 70 is larger than an area of a surface of the first elastic partition 51 on a side close to the optical adhesive layer 70, an interface between the first elastic partition 51 and the cover plate 30 is a curved surface, and the curved surface is a curved surface recessed toward the optical adhesive layer 70, so that the light K' enters the first elastic partition 51 through the interface between the first elastic partition 51 and the cover plate 30, the influence of the first elastic partition 51 on the display of the flexible display panel is effectively reduced, and the display effect of the flexible display panel is improved.
It should be noted that, in this embodiment, it is exemplarily shown that the interface between the first elastic partition portion and the cover plate is an inclined plane or a curved surface, and the curved surface is a curved surface recessed toward the optical adhesive layer.
The present embodiment provides a display device including the flexible display panel as described above.
Referring to fig. 10, fig. 10 is a schematic plan view of a display device according to the present invention. Fig. 10 provides a display device 1000 including a flexible display panel 100, wherein the flexible display panel is the flexible display panel 100 according to any of the above embodiments of the present invention. The embodiment of fig. 10 is only an example of a mobile phone, and the display device 1000 is described, but it should be understood that the display device provided in the embodiment of the present invention may be other display devices with a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device provided in the embodiment of the present invention has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel in each of the above embodiments, which is not repeated herein.
According to the embodiment, the flexible display panel and the display device provided by the invention at least realize the following beneficial effects:
the flexible display panel comprises a bending area, a non-bending area connected with the bending area and a substrate base plate, wherein the substrate base plate is a flexible base plate, a display layer is positioned on one side of the substrate base plate, a cover plate is positioned on one side of the display layer far away from the substrate base plate, a lower protection layer is positioned on one side of the substrate base plate far away from the display layer, and the cover plate is provided with at least one first elastic partition part in the bending area; or the lower protective layer is provided with at least one second elastic partition part in the bending area; or the cover plate is provided with at least one first elastic partition part in the bending area, and the lower protective layer is provided with at least one second elastic partition part in the bending area. First elasticity cuts off portion and plays the effect that elasticity cut off to the apron to produce the effect that the segmentation was buckled when making the part that the apron is located the bending zone buckle, and then reduce the deformation of the glue film in the bending zone of flexible display panel, effectively improved the condition that flexible display panel edge takes place the rete and peels off. The second elasticity cuts off the effect that portion played the elasticity to cut off to lower protective layer to the part that makes lower protective layer be located the district of buckling produces the effect that the segmentation was buckled when buckling, and then reduces the deformation of the glue film in the district of buckling of flexible display panel, has effectively improved the condition that flexible display panel edge takes place the rete and peels off.
Although some specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (18)
1. A flexible display panel is characterized in that the flexible display panel comprises a bending area and a non-bending area connected with the bending area; the flexible display panel includes:
a substrate base plate;
the display layer is positioned on one side of the substrate base plate;
the cover plate is positioned on one side of the display layer, which is far away from the substrate base plate;
the lower protective layer is positioned on one side of the substrate base plate, which is far away from the display layer;
the optical adhesive layer is positioned between the cover plate and the display layer;
the cover plate is provided with at least one first elastic partition part in the bending area, or the cover plate is provided with at least one first elastic partition part in the bending area and at least one second elastic partition part in the bending area;
the first and second elastic partitions comprise at least an elastic layer;
the first elastic partition part penetrates through the optical adhesive layer in a direction perpendicular to the light emitting surface of the flexible display panel;
the first elastic partition part comprises a first extension part, and the first extension part and the elastic layer in the first elastic partition part are made of the same material by the same process;
the first extending part is located on the side face of the first elastic partition part and close to one side of the optical adhesive layer, and the first extending part is attached to the optical adhesive layer.
2. The flexible display panel of claim 1,
at least two first elastic partition parts are arranged in the cover plate, and/or at least two second elastic partition parts are arranged in the lower protective layer, and the distance between each two adjacent first elastic partition parts and each two adjacent second elastic partition parts is d; wherein the content of the first and second substances,
0.5mm≤d≤10mm。
3. the flexible display panel of claim 2,
the number of the first elastic partition parts is the same as that of the second elastic partition parts.
4. The flexible display panel of claim 3,
the vertical projection of the first elastic partition part on the light-emitting surface of the flexible display panel is overlapped with the vertical projection of the second elastic partition part on the light-emitting surface of the flexible display panel.
5. The flexible display panel of claim 3,
the vertical projection of the first elastic partition part on the light-emitting surface of the flexible display panel is not overlapped with the vertical projection of the second elastic partition part on the light-emitting surface of the flexible display panel.
6. The flexible display panel of claim 1,
in the direction perpendicular to the light emitting surface of the flexible display panel, the first elastic partition part at least penetrates through the cover plate, and the second elastic partition part at least penetrates through the lower protective layer.
7. The flexible display panel of claim 6,
the elastic layer comprises a transparent elastic material, and the elastic modulus of the elastic material ranges from 1MPa to 500 MPa.
8. The flexible display panel of claim 7,
the flexible display panel further comprises a hard coating layer, the hard coating layer is located on one side, far away from the substrate base plate, of the cover plate, and the first elastic partition portion further penetrates through the hard coating layer.
9. The flexible display panel of claim 8,
the first elastic partition further comprises a hardness layer, the hardness layer is located on one side, away from the substrate base plate, of the elastic layer, and the hardness layer comprises a material with the elastic modulus larger than 1 GPa.
10. The flexible display panel of claim 1,
the heights of the first elastic partition part and the second elastic partition part are both H, and the widths of the surfaces, close to the light emitting surface of the flexible display panel, of the first elastic partition part and the second elastic partition part are both L; wherein, the first and the second end of the pipe are connected with each other,
10μm≤H≤200μm，10μm≤L≤1mm。
11. the flexible display panel of claim 7,
the flexible display panel further comprises at least one pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer is positioned on one side of the lower protective layer far away from and/or close to the substrate base plate;
and in the direction vertical to the light emergent surface of the flexible display panel, the second elastic partition part at least penetrates through one layer of the pressure-sensitive adhesive layer.
12. The flexible display panel according to claim 11,
the second elastic partition part comprises at least one second extension part, and the second extension part and the elastic layer in the second elastic partition part are made of the same material by the same process;
in the direction perpendicular to the light emitting surface of the flexible display panel, the second extending portion is located on the side surface of the second elastic partition portion, the second extending portion is located on one side, far away from and/or close to the substrate base plate, of the second elastic partition portion, and at least one second extending portion is attached to the pressure-sensitive adhesive layer.
13. The flexible display panel according to claim 7,
the elastic layer further comprises a thermoset material.
14. The flexible display panel of claim 1,
the refractive index of the first elastic partition part is smaller than that of the cover plate, and the area of the surface of the first elastic partition part, which is far away from the optical adhesive layer, is larger than that of the surface of the first elastic partition part, which is close to the optical adhesive layer;
light rays are emitted into the first elastic partition part after passing through an interface between the first elastic partition part and the cover plate.
15. The flexible display panel of claim 14,
the interface between the first elastic partition part and the cover plate is an inclined plane or a curved surface, and the curved surface is a curved surface which is concavely arranged towards the direction of the optical adhesive layer.
16. A display device characterized by comprising the flexible display panel according to any one of claims 1 to 15.
17. A flexible display panel is characterized in that the flexible display panel comprises a bending area and a non-bending area connected with the bending area; the flexible display panel includes:
a substrate base plate;
the display layer is positioned on one side of the substrate base plate;
the cover plate is positioned on one side of the display layer, which is far away from the substrate base plate;
the lower protective layer is positioned on one side, away from the display layer, of the substrate base plate;
the optical adhesive layer is positioned between the cover plate and the display layer;
the lower protective layer is provided with at least one second elastic partition part in the bending area;
the second elastic partition comprises at least an elastic layer;
the flexible display panel also comprises at least one layer of pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer is positioned on one side of the lower protective layer far away from and/or close to the substrate base plate;
in the direction perpendicular to the light emitting surface of the flexible display panel, the second elastic partition part at least penetrates through one layer of the pressure-sensitive adhesive layer;
the second elastic partition part comprises at least one second extension part, and the second extension part and the elastic layer in the second elastic partition part are made of the same material by the same process;
in the direction perpendicular to the light emitting surface of the flexible display panel, the second extending portion is located on the side surface of the second elastic partition portion, the second extending portion is located on one side, far away from and/or close to the substrate base plate, of the second elastic partition portion, and at least one second extending portion is attached to the pressure-sensitive adhesive layer.
18. A display device characterized by comprising the flexible display panel according to claim 17.
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| CN112309257B (en) * | 2020-10-30 | 2022-07-12 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and flexible display device |
| CN113393770A (en) * | 2021-06-23 | 2021-09-14 | 武汉华星光电技术有限公司 | Flexible display module and flexible display device |
| CN115035801A (en) * | 2022-06-24 | 2022-09-09 | 武汉华星光电半导体显示技术有限公司 | Display screen and wearing equipment |
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