CN210167359U

CN210167359U - Flexible display panel and flexible display device

Info

Publication number: CN210167359U
Application number: CN201921147775.6U
Authority: CN
Inventors: 邹敏
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-03-20
Anticipated expiration: 2029-07-19

Abstract

The application discloses flexible display panel and flexible display device, flexible display panel includes: the flexible substrate is defined with a display area and a non-display area positioned on the periphery of the display area; the enclosing barrier is arranged in the non-display area of the flexible substrate, and the distance between the side, closest to the display area, of the enclosing barrier and the side, farthest from the display area, of the enclosing barrier is defined as D; the film packaging layer is arranged on one side, provided with the enclosing barrier, of the flexible substrate, and at least partially covers the display area and at least partially covers the enclosing barrier located in the non-display area; under the condition that the size of D is kept unchanged, the enclosing barrier is composed of at least three sub-enclosing barriers, at least one first sub-enclosing barrier, one second sub-enclosing barrier and one third sub-enclosing barrier are included, the width of the first sub-enclosing barrier is defined to be L, the width of the second sub-enclosing barrier and the width of the third sub-enclosing barrier are smaller than or equal to L and larger than or equal to 0.1L, and the width of each sub-enclosing barrier is smaller than D/2. Through the mode, the application can effectively improve the sealing performance of the flexible display panel.

Description

Flexible display panel and flexible display device

Technical Field

The application relates to the technical field of display, in particular to a flexible display panel and a flexible display device.

Background

For flexible packaging (TFE) products of OLEDs, liquid organic materials used in the packaging have fluidity, and two barrier structures with certain width and height are generally designed at the boundary to fix the liquid organic materials in a certain effective area and prevent overflow of a thin film packaging organic layer to cause packaging failure.

The inventor of the application discovers in the long-term research process that the existing flexible display panel generally does not limit the form and the number of the blocking structures, and the conventional design is larger due to the width of the blocking structures, when the boundary of an actual product is bent, the thickness of the protruding part of the blocking structure is thicker, so that the stress of the film packaging inorganic layer at the blocking structure is easier to concentrate, the edge part close to the blocking structure is easier to be affected by bending and packaging failure, the blocking structure in the conventional design cannot effectively block the film packaging organic layer, and the sealing effect is difficult to be maximized.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application mainly solved provides a flexible display panel and flexible display device, can effectively promote flexible display panel's leakproofness.

In order to solve the technical problem, the application adopts a technical scheme that: there is provided a flexible display panel including: the display device comprises a flexible substrate, a display area and a non-display area, wherein the display area and the non-display area are defined on the periphery of the display area; the enclosing barrier is arranged in the non-display area of the flexible substrate, and the distance between one side of the enclosing barrier, which is closest to the display area, and one side of the enclosing barrier, which is farthest from the display area, is defined as D; the film packaging layer is arranged on one side, provided with the enclosing barrier, of the flexible substrate, and at least partially covers the display area and at least partially covers the enclosing barrier located in the non-display area; under the condition that the size of D is kept unchanged, the enclosing barrier is composed of at least three sub enclosing barriers and at least comprises a first sub enclosing barrier, a second sub enclosing barrier and a third sub enclosing barrier, the width of the first sub enclosing barrier is defined to be L, the widths of the second sub enclosing barrier and the third sub enclosing barrier are less than or equal to L and more than or equal to 0.1L, and the width of each sub enclosing barrier is less than D/2.

Wherein the heights of at least two sub-enclosures at one side of the flexible substrate are different.

In the direction far away from the display area, the height of the 2M or 2M-1 sub-enclosure on one side of the flexible substrate is greater than that of the adjacent sub-enclosure on one side of the flexible substrate, wherein M is more than or equal to 1.

Wherein the width of each sub-enclosure is the same; or the widths of at least two sub-enclosing barriers are different.

Wherein the projection width of the orthographic projection of at least one sub-enclosure on the flexible substrate is bent along the length direction.

The non-display area comprises a plurality of linear areas and a plurality of chamfer areas connecting two adjacent linear areas, and each sub-enclosure comprises a plurality of frames arranged along the extending direction of the edge of each linear area of the non-display area and a plurality of corner parts connecting two adjacent frames; in each sub-enclosure, the width of the corner part of the sub-enclosure is larger than that of the frame of the sub-enclosure; or, the lengths of the sides of at least two of the linear regions are different, and in each of the sub-barriers, the width of the frame arranged along the linear region having the longer side is larger than the width of the frame arranged along the linear region having the shorter side.

Wherein the flexible display panel further comprises: the chip is arranged on one side of the flexible substrate and is positioned on one side, far away from the display area, of the sub-enclosure which is farthest away from the display area; in each sub-enclosure, the width of the frame close to one side of the chip is larger than the width of other frames.

The thin film encapsulation layer comprises at least one organic layer and at least one inorganic layer which are stacked, the organic layer is located on one side, close to the display area, of the sub-enclosure closest to the display area and at least partially covers the display area, and the inorganic layer covers the organic layer and at least partially covers all the sub-enclosures located in the non-display area.

Wherein the width of each sub-enclosure is 5-50 μm.

In order to solve the technical problem, a flexible display device is further provided, wherein the flexible display device includes any one of the flexible display panels.

The beneficial effect of this application is: different from the prior art, the flexible display panel provided by the present application includes a flexible substrate, a barrier and a film encapsulation layer, the flexible substrate defines a display area and a non-display area located at the periphery of the display area, the barrier is disposed at the non-display area of the flexible substrate, the film encapsulation layer is disposed at the side of the flexible substrate having the barrier, the film encapsulation layer at least covers the display area and the barrier located at the non-display area, a distance between a side of the barrier closest to the display area and a side of the barrier farthest from the display area is defined as D, the barrier area of the flexible display panel is set to be formed by combining at least three sub-barriers while keeping the size of D unchanged, that is, at least one of the two sub-barriers in the existing design is divided into at least two sub-barriers in the width direction thereof, and the widths of the second sub-barrier and the third sub-barrier are both less than or equal to L and greater than or equal to 0.1L due to the definition of the width of the first sub-barrier as L, and the width of each sub-enclosure is smaller than D/2, the design mode reduces the width of a single sub-enclosure compared with the existing design, increases the number of sub-enclosures in the same space, can prolong the water and oxygen invasion route, and can realize the fold design of a film packaging layer covering the enclosure, thereby providing the space for relieving the stress of the flexible substrate and the film packaging layer when bending, effectively preventing the edge packaging failure of the flexible display panel caused by dynamic bending, and effectively improving the sealing property of the flexible display panel.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

fig. 1 is a schematic structural diagram of a first embodiment of a flexible display panel according to the present application;

fig. 2 is a schematic partial structure diagram of the flexible display panel in fig. 1;

fig. 3 is a schematic partial structure diagram of a flexible display panel according to a second embodiment of the present application;

fig. 4 is a schematic partial structure diagram of a flexible display panel according to a third embodiment of the present application;

fig. 5 is a schematic partial structure diagram of a flexible display panel according to a fourth embodiment of the present application;

FIG. 6 is a schematic top view of the flexible display panel shown in FIG. 1;

fig. 7 is a schematic view of a first partial structure of the flexible display panel in fig. 6;

FIG. 8 is a second partial structural diagram of the flexible display panel shown in FIG. 6;

fig. 9 is a partial schematic structural diagram of a fifth embodiment of a flexible display panel according to the present application;

fig. 10 is a schematic structural diagram of an embodiment of a flexible display device according to 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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 and fig. 2, in which fig. 1 is a schematic structural diagram of a flexible display panel according to a first embodiment of the present application, and fig. 2 is a schematic partial structural diagram of the flexible display panel in fig. 1. The flexible display panel can be used in various display modes, such as an OLED (organic light emitting diode) display, a quantum dot display, a Micro-LED (Micro-LED and matrixed light emitting diode) display, and the like. The flexible display panel comprises a flexible substrate 10, a surrounding barrier 12 and a film packaging layer 14, wherein the flexible substrate 10 defines a display area A and a non-display area B located at the periphery of the display area A, the surrounding barrier 12 is arranged in the non-display area B of the flexible substrate 10, the film packaging layer 14 is arranged on one side, provided with the surrounding barrier 12, of the flexible substrate 10, the film packaging layer 14 at least partially covers the display area A and at least partially covers the surrounding barrier 12 located in the non-display area B, and the distance between the side, closest to the display area A, of the surrounding barrier 12 and the side, farthest from the display area A, of the surrounding barrier is defined as D; under the condition of keeping the size of D unchanged, the enclosure 12 is composed of at least three sub-enclosures 120, and at least comprises a first sub-enclosure, a second sub-enclosure and a third sub-enclosure, wherein the width of the first sub-enclosure is defined as L, the widths of the second sub-enclosure and the third sub-enclosure are less than or equal to L and greater than or equal to 0.1L, and the width of each sub-enclosure 120 is less than D/2.

In the present embodiment, the flexible substrate 10 is made of a flexible material, for example, Polyimide PI (Polyimide, abbreviated as PI) polymer, Polycarbonate PC (Polycarbonate, abbreviated as PC) resin, also referred to as PC plastic, Polyethylene terephthalate (PET) plastic, and the like. A light emitting device may be further formed on one side of the flexible substrate 10 having the enclosure 12, for example, a thin film transistor, an organic light emitting diode, or the like covering the display area a may be fabricated on the flexible substrate 10; in general, the light-emitting layer may include an anode, a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, an electron injection layer, and a cathode, which are sequentially stacked in a direction from the flexible substrate 10 to the thin film encapsulation layer 14. The thin film encapsulation layer 14 is disposed on the cathode and is mainly used for blocking outside water vapor and oxygen, and preventing the water vapor and oxygen from entering the light emitting device to corrode the organic light emitting layer, so as to improve the service life of the organic light emitting layer.

For flexible OLED packaging products, since the liquid organic material used in the package has fluidity, two barrier structures with a certain width and height are generally designed at the boundary of the flexible substrate 10 to fix the liquid organic material in a certain effective area, so as to prevent the overflow of the thin film organic layer, which may cause package failure. Because the flexible display panel has the characteristic of being bendable, when the flexible display panel is bent or bended, tensile stress can occur on the outer surface of one side facing the protrusion, and compressive stress can occur on the inner surface of one side facing the recess; when the boundary of the flexible display panel is bent, the thickness of the protruding part of the blocking structure is thicker, so that the stress of the thin film packaging layer 14 at the blocking structure is more easily concentrated, the edge part close to the blocking structure is more easily affected by bending, and the thin film packaging layer 14 is easily damaged to cause packaging failure. In the present application, two sub-barriers 120 in the existing design are set in the form of a combination of at least three sub-barriers 120 while keeping the size of D unchanged, and may of course be composed of more sub-barriers 120, for example, 4, 5, 6, etc., where fig. 2 shows 4 sub-barriers 120; in addition, the width of the first sub surrounding barrier is defined as L, the widths of the second sub surrounding barrier and the third sub surrounding barrier are both less than or equal to L and greater than or equal to 0.1L, and the width of each sub surrounding barrier 120 is less than D/2, so that the width of each sub surrounding barrier 120 is smaller than the width of the sub surrounding barrier 120 in the existing design, and the width of the sub surrounding barrier 120 in the present application may be 1/10 to 1 of the width of the sub surrounding barrier 120 in the existing design, that is, the number of the sub surrounding barriers 120 is increased in the same space compared with the existing design. Due to the fact that the number of the sub-barriers 120 is increased in the same width D, on one hand, the water and oxygen invasion route is lengthened compared with the existing design, on the other hand, the number of gaps between the sub-barriers 120 and the sub-barriers 120 is increased, and the thin film packaging layer 14 covering the barriers 12 forms wrinkles, so that the gaps between the sub-barriers 120 and the sub-barriers 120 can provide a stress relieving space for the flexible substrate 10 and the thin film packaging layer 14 during bending, and bending resistance of the flexible substrate 10 and the thin film packaging layer 14 is improved. In other words, since the width of each sub-surrounding barrier 120 is smaller than the width of the sub-surrounding barrier 120 in the existing design, the space can be saved under the condition that the number of the sub-surrounding barriers 120 is the same as that of the sub-surrounding barriers 120 in the existing design, thereby being beneficial to realizing the narrow frame design of the flexible display panel.

In this embodiment, the flexible display panel includes a flexible substrate 10, a barrier 12 and a film encapsulation layer 14, the flexible substrate 10 defines a display area a and a non-display area B located at the periphery of the display area a, the barrier 12 is disposed at the non-display area B of the flexible substrate 10, the film encapsulation layer 14 is disposed at one side of the flexible substrate 10 having the barrier 12, the film encapsulation layer 14 at least partially covers the display area a and at least partially covers the barrier 12 located at the non-display area B, a distance between a side of the barrier 12 closest to the display area a and a side of the barrier farthest from the display area a is defined as D, by arranging an area of the barrier 12 of the flexible display panel to be combined by at least three sub-barriers 120 while keeping the size of D unchanged, that is, at least one sub-barrier 120 of two sub-barriers 120 in the existing design is divided into at least two sub-barriers 120 in the width direction thereof, and since the width of the first sub-barrier is defined as L, the width of the second sub enclosure and the width of the third sub enclosure are less than or equal to L and more than or equal to 0.1L, and the width of each sub enclosure 120 is less than D/2, the design mode reduces the width of the single sub enclosure 120 compared with the existing design, the number of the sub enclosures 120 is increased in the same space, not only can the water and oxygen intrusion route be prolonged, but also the fold design of the film packaging layer 14 covering the enclosure 12 can be realized, so that the stress relief space of the flexible substrate 10 and the film packaging layer 14 during bending can be given, the failure of edge packaging of the display panel caused by dynamic bending is effectively prevented, and the sealing performance of the flexible display panel can be effectively improved.

Referring to fig. 3 and fig. 4, in which fig. 3 is a partial schematic structural diagram of a second embodiment of a flexible display panel of the present application, and fig. 4 is a partial schematic structural diagram of a third embodiment of a flexible display panel of the present application. In the present embodiment, at least two sub-barriers 120 have different heights on one side of the flexible substrate 10. Because the height difference of the two sub-enclosure walls 120 is at least existed, the height difference is formed between the sub-enclosure walls 120 with different heights, and the water and oxygen invasion route at the edge position of the flexible display panel is longer through the height difference formed by the combination of the sub-enclosure walls 120 with different heights, so that the external water vapor and oxygen are more difficult to enter the flexible display panel, and the sealing property of the flexible display panel is effectively improved.

Further, in the direction away from the display area a, the height of the 2M-th or 2M-1-th sub-surrounding barrier 120 on the side of the flexible substrate 10 is greater than the height of the adjacent sub-surrounding barrier 120 on the side of the flexible substrate 10, where M ≧ 1. In one embodiment, as shown in fig. 3, all the sub-barriers 120 are arranged at intervals along a direction away from the display area a, the height of the sub-barriers 120 arranged at even positions is greater than the height of the sub-barriers 120 arranged at odd positions, and all the sub-barriers 120 are arranged in a form of "low-high-low-high"; in another embodiment, as shown in fig. 4, all the sub-barriers 120 are arranged at intervals in a direction away from the display area a, the height of the sub-barriers 120 arranged in odd-numbered positions is greater than the height of the sub-barriers 120 arranged in even-numbered positions, and all the sub-barriers 120 are arranged in a "high-low-high-low" manner. The sub-barriers 120 with different heights are combined to form a wavy height difference, so that the edge position of the flexible display panel has a longer water and oxygen invasion route, and the sealing performance of the flexible display panel is effectively improved.

It is understood that, in all the sub-enclosures 120, as shown in fig. 3 or fig. 4, there may be only two kinds of sub-enclosures 120, and of course, the heights of all the sub-enclosures 120 may be different. Due to the arrangement, the heights of all the sub-enclosure barriers 120 are not limited to be consistent, the process difficulty in actual production can be reduced, the edge position of the flexible display panel has a longer water and oxygen invasion route, and the sealing performance of the flexible display panel can be effectively improved.

Please refer to fig. 2 and 5, wherein fig. 5 is a schematic partial structure diagram of a flexible display panel according to a fourth embodiment of the present application. In the present embodiment, the width of each sub-enclosure 120 is the same; or at least two sub-enclosures 120 are of different widths. In one embodiment, as shown in fig. 2, all the sub-barriers 120 have the same width, while in other embodiments, as shown in fig. 5, at least two sub-barriers 120 have different widths, and it is understood that all the sub-barriers 120 may have different widths. Due to the arrangement, the widths of all the sub-enclosure barriers 120 are not limited to be consistent, the process difficulty in actual production can be reduced, and the design of different widths among the sub-enclosure barriers 120 can save space and reduce the space occupation of the flexible display panel.

Referring to fig. 6, fig. 6 is a schematic top view of the flexible display panel in fig. 1, wherein only one sub-barrier 120 is shown for convenience of illustration and understanding. Referring to fig. 7, fig. 7 is a schematic view of a first partial structure of the flexible display panel shown in fig. 6. In one embodiment, the projected width of the orthographic projection of at least one sub-enclosure 120 on the flexible substrate 10 is curved along the length direction. It can be understood that, the same sub-barrier 120 may be configured to have a special-shaped structure in the length direction, for example, an "S" shape or an irregular concave-convex shape, and by configuring the sub-barrier 120 to have a special shape in the length direction, compared to the linear barrier 12 structure, there are spaces between concave-convex positions in the length direction, and these spaces can provide a space for relieving stress of the flexible substrate 10 and the thin film encapsulation layer 14, so as to effectively relieve dynamic bending stress, thereby increasing the bending resistance of the flexible substrate 10 and the thin film encapsulation layer 14, and improving the sealing performance of the edge of the flexible display panel.

The cross-sectional shape of the sub-enclosure 120 in the present application may be polygonal column, cylinder, trapezoidal platform, truncated cone, sand pile, cone, etc., or may be other shapes.

In addition, in other embodiments, the projection width of the orthographic projection of at least one sub-enclosure 120 on the flexible substrate 10 is changed along the length direction in an alternating manner, that is, the cross-sectional width of the sub-enclosure 120 may be different at different positions, such an arrangement may cause the widths of different positions of the same sub-enclosure 120 not to be limited to be consistent, which may reduce the process difficulty in actual production, and the design of different widths at different positions of the same sub-enclosure 120 may reduce the space occupation at the partial position of the flexible display panel.

Referring to fig. 1 and 6, in the flexible display panel of the present application, the non-display area B may include a plurality of linear areas and a plurality of chamfered areas connecting two adjacent linear areas, and correspondingly, each sub-barrier 120 includes a plurality of frames 1200 disposed along an extending direction of edges of each linear area of the non-display area B and a plurality of corner portions 1202 connecting two adjacent frames 1200, as shown in the figure, a portion of the non-display area B in the area E may be understood as a linear area, a portion of the sub-barrier 120 disposed along an extending direction of the edges of the linear areas is a frame 1200 of the sub-barrier 120, a corner portion of the non-display area B in the area F connecting two adjacent linear areas may be understood as a chamfered area, and a portion of the sub-barrier 120 connecting two adjacent frames 1200 is a corner portion 1202 of the sub-barrier 120. In an embodiment, the lengths of the sides of at least two linear regions are different, and in each sub-enclosure 120, the width of the frame 1200 disposed along the linear region having the longer side is greater than the width of the frame 1200 disposed along the linear region having the shorter side. It can be understood that, in the same sub-enclosure 120, the length surrounded by the frame 1200 located at the long side position is longer than the length surrounded by the frame 1200 located at the short side position, and therefore, the flexible display panel can be bent along the direction of the long side in most cases, and therefore, in the bending process, the frame 1200 located at the long side position is more easily damaged, and therefore, the width of the frame 1200 located along the linear region having the long side in the single sub-enclosure 120 can be set larger, so as to prevent the edge encapsulation failure of the long side of the flexible display panel due to dynamic bending. In addition, in the same sub-enclosure 120, the width of the frame 1200 disposed along the linear region having the longer side is greater than the width of the frame 1200 disposed along the linear region having the shorter side, so that the space occupation of the linear region having the shorter side of the flexible display panel can be reduced.

In another embodiment, referring to fig. 8, fig. 8 is a second partial structural schematic view of the flexible display panel in fig. 6, and in each sub-enclosure 120, a width of a corner portion 1202 of the sub-enclosure 120 is greater than a width of a frame 1200 thereof. It can be understood that, during the bending process of the flexible display panel, no matter bending along the long side direction or bending along the short side direction, the chamfered regions connecting two adjacent linear regions are bent, and therefore, in practical applications, the position of the corner portion 1202 of the same sub-enclosure 120 is more easily damaged relative to the position of the frame 1200 thereof, and therefore, the width of the corner portion 1202 in the single sub-enclosure 120 is set to be larger, so as to prevent the package failure of the chamfered region of the flexible display panel due to dynamic bending. In the same sub-enclosure 120, the width of the corner portion 1202 of the sub-enclosure 120 is greater than the width of the frame 1200 thereof, so that the space occupation of the line region of the flexible display panel can be reduced.

Referring to fig. 6, in an embodiment, the flexible display panel further includes a chip 16, the chip 16 is disposed on one side of the flexible substrate 10 having the sub-barrier 120, and the chip 16 is located on one side of the sub-barrier 120 farthest from the display area, the side being far from the display area; in each sub-enclosure 120, the width of the frame 1200 near the side of the chip 16 is greater than the width of the other frames 1200. It can be understood that, due to the integrated circuit in the chip 16, by setting the width of the frame 1200 close to the side of the chip 16 to be larger, the failure of the edge package of the flexible display panel on the side of the chip 16 due to dynamic bending can be better prevented. In the same sub-enclosure 120, the width of the frame 1200 close to the chip 16 is greater than the widths of the other frames 1200, so that the space occupation of the other line regions of the flexible display panel except the line region with the chip 16 can be reduced.

Referring to fig. 9, fig. 9 is a partial schematic structural diagram of a fifth embodiment of a flexible display panel according to the present application. In one embodiment, the thin film encapsulation layer 14 includes at least one organic layer 140 and at least one inorganic layer 142 stacked together, the organic layer 140 is located on a side of the sub-barrier 120 closest to the display region, and at least partially covers the display region, and the inorganic layer 142 covers the organic layer 140 and at least partially covers all the sub-barriers 120 located in the non-display region. In addition, when the organic layer 140 and the inorganic layer 142 are combined to perform encapsulation, the volume and the quality of the display panel can be reduced, and the permeation of water vapor and oxygen can be reduced well. The inorganic layer 142 of the present application may be made of a mixture of one or more of metal oxides, oxides of silicon, nitrides of silicon, and the like inorganic materials.

The present application sets the area of the enclosure 12 of the flexible display panel to be a form of combining at least three sub-enclosures 120 under the condition of keeping the size of D unchanged, that is, at least one sub-enclosure 120 of two sub-enclosures 120 in the existing design is divided into at least two sub-enclosures 120 in the width direction, and since the width of the first sub-enclosure is defined as L, the widths of the second sub-enclosure and the third sub-enclosure are both less than or equal to L and greater than or equal to 0.1L, and the width of each sub-enclosure 120 is less than D/2, the above design reduces the width of a single sub-enclosure 120 compared with the existing design, increases the number of sub-enclosures 120 in the same space, not only can utilize the combination of a plurality of sub-enclosures 120 to more effectively intercept the overflow of the liquid organic material of the organic layer 140, but also can make the inorganic layer 142 covering on the sub-enclosure 120 form a corrugated design, therefore, the occupied space of the inorganic layer 142 is increased, the stress concentration of the inorganic layer 142 caused by bending can be effectively relieved, and the sealing performance of the flexible display panel is improved.

Further, the width of each sub-enclosure 120 is 5 μm to 50 μm, for example, the width of the sub-enclosure 120 may be 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 40 μm, or 50 μm. In the embodiment of the application, the width of the sub surrounding barrier 120 is selected to be 5 μm to 50 μm, the width of the first sub surrounding barrier is L, the widths of the second sub surrounding barrier and the third sub surrounding barrier are both less than or equal to L and greater than or equal to 0.1L, and the width of each sub surrounding barrier 120 is less than D/2, that is, the width of each sub surrounding barrier 120 is smaller than the width of the sub surrounding barrier 120 in the existing design, so that the number of the sub surrounding barriers 120 is increased in the same space in the existing design, and further the sealing performance of the flexible display panel is improved.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a flexible display device according to the present application. The flexible display device 20 includes a flexible display panel 200, and the flexible display panel 200 is the flexible display panel in any of the above embodiments. The flexible display device 20 may be an OLED display device, and any product or component having a display function, such as a television, a digital camera, a mobile phone, a tablet computer, a smart watch, an electronic book, and a navigator including the OLED display device.

The flexible display device 20 of the present application, by setting the enclosure area of the flexible display panel 200 to be formed by combining at least three sub-enclosures under the condition of keeping the size of D unchanged, i.e. at least one of the two enclosures in the existing design is divided into at least two sub-enclosures in the width direction, and because the width of the first sub-enclosure is defined as L, the widths of the second sub-enclosure and the third sub-enclosure are both less than or equal to L and greater than or equal to 0.1L, and the width of each sub-enclosure is less than D/2, the above design reduces the width of a single sub-enclosure compared with the existing design, increases the number of sub-enclosures in the same space, can not only prolong the water and oxygen intrusion route, but also can realize the fold design of the film packaging layer covering on the enclosure, thereby giving a space for stress relief of the flexible substrate and the film packaging layer when bending, the packaging failure of the edge of the flexible display panel 200 due to dynamic bending can be effectively prevented, and the sealing performance of the flexible display panel 200 in the flexible display device 20 can be effectively improved.

It is noted that, in the present application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all modifications that can be made by using equivalent structures or equivalent principles in the contents of the specification and the drawings or directly or indirectly applied to other related technical fields are also included in the scope of the present application.

Claims

1. A flexible display panel, comprising:

the display device comprises a flexible substrate, a display area and a non-display area, wherein the display area and the non-display area are defined on the periphery of the display area;

the enclosing barrier is arranged in the non-display area of the flexible substrate, and the distance between one side of the enclosing barrier, which is closest to the display area, and one side of the enclosing barrier, which is farthest from the display area, is defined as D;

the film packaging layer is arranged on one side, provided with the enclosing barrier, of the flexible substrate, and at least partially covers the display area and at least partially covers the enclosing barrier located in the non-display area;

under the condition that the size of D is kept unchanged, the enclosing barrier is composed of at least three sub enclosing barriers and at least comprises a first sub enclosing barrier, a second sub enclosing barrier and a third sub enclosing barrier, the width of the first sub enclosing barrier is defined to be L, the widths of the second sub enclosing barrier and the third sub enclosing barrier are less than or equal to L and more than or equal to 0.1L, and the width of each sub enclosing barrier is less than D/2.

2. The flexible display panel of claim 1, wherein at least two of the sub-enclosures differ in height on one side of the flexible substrate.

3. The flexible display panel of claim 2, wherein the height of the 2M or 2M-1 sub-enclosure on one side of the flexible substrate is greater than the height of the adjacent sub-enclosure on one side of the flexible substrate in a direction away from the display area, wherein M ≧ 1.

4. The flexible display panel of claim 1, wherein the width of each sub-enclosure is the same; or

The widths of at least two sub-enclosing barriers are different.

5. The flexible display panel of claim 1, wherein a projected width of an orthographic projection of at least one of the sub-enclosures on the flexible substrate is curved along a length direction.

6. The flexible display panel according to claim 1, wherein the non-display region includes a plurality of line-shaped regions and a plurality of chamfered regions connecting two adjacent line-shaped regions, and each of the sub-barriers includes a plurality of frames disposed along an extending direction of a side of each line-shaped region of the non-display region and a plurality of corner portions connecting two adjacent frames;

in each sub-enclosure, the width of the corner part of the sub-enclosure is larger than that of the frame of the sub-enclosure;

or the like, or, alternatively,

the lengths of the sides of at least two of the linear areas are different, and in each of the sub-barriers, the width of the frame disposed along the linear area having the longer side is larger than the width of the frame disposed along the linear area having the shorter side.

7. The flexible display panel of claim 6, further comprising:

the chip is arranged on one side of the flexible substrate and is positioned on one side, far away from the display area, of the sub-enclosure which is farthest away from the display area; in each sub-enclosure, the width of the frame close to one side of the chip is larger than the width of other frames.

8. The flexible display panel according to claim 1, wherein the thin film encapsulation layer comprises at least one organic layer and at least one inorganic layer stacked, the organic layer is located on a side of the sub-barrier closest to the display region, the side of the sub-barrier is close to the display region, the organic layer at least partially covers the display region, and the inorganic layer covers the organic layer and at least partially covers all the sub-barriers located in the non-display region.

9. The flexible display panel of claim 1, wherein each of the sub-enclosures has a width of 5 μ ι η to 50 μ ι η.

10. A flexible display device, characterized in that the flexible display device comprises a flexible display panel according to any one of claims 1-9.