CN112820199A - Flexible display panel and flexible display device - Google Patents
Flexible display panel and flexible display device Download PDFInfo
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- CN112820199A CN112820199A CN202110185065.8A CN202110185065A CN112820199A CN 112820199 A CN112820199 A CN 112820199A CN 202110185065 A CN202110185065 A CN 202110185065A CN 112820199 A CN112820199 A CN 112820199A
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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 discloses a flexible display panel and a flexible display device. The flexible display panel includes: the display substrate comprises a display area and a non-display area, wherein the non-display area comprises a bending area; the polaroid is arranged on one side of the light emitting surface of the display substrate, at least covers the display area, is close to one end of the bending area and is in a round angle with the edge of the display substrate in contact. The scheme disclosed by the invention can improve the impact resistance of the edge position of the flexible display panel and improve the product yield.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a flexible display panel and a flexible display device.
Background
With the development of display technology, electronic devices with display functions are widely used in daily life and work of people. The main component of the electronic device that implements the display function is the display panel. Reducing the frame width of the display panel to achieve a narrow frame or even no frame has become a main objective of the display panel.
At present, the mainstream way of reducing the frame width of the display panel is to use a flexible display panel to bend and fix at least part of the non-display area of the display panel on the display back. However, how to increase the strength of the bent edge is a problem that needs to be solved.
Disclosure of Invention
The invention provides a flexible display panel and a flexible display device, which can improve the shock resistance of the edge position of the flexible display panel and improve the yield of products.
In a first aspect, an embodiment of the present invention provides a flexible display panel, including:
the display substrate comprises a display area and a non-display area, wherein the non-display area comprises a bending area;
the polaroid is arranged on one side of the light emitting surface of the display substrate, at least covers the display area, and one end of the polaroid, which is close to the bending area, is in a round angle with the edge of the display substrate, which is in contact with the display substrate.
The flexible display panel as above, optionally, the flexible display panel further comprises:
the supporting layer is arranged on the non-light-emitting side of the display substrate;
the functional layer is arranged on one side of the supporting layer, which is far away from the display substrate;
and the protective layer is arranged on one side of the light emergent surface of the display substrate and fills a gap between the fillet of the polaroid and the display substrate.
In the flexible display panel, the support layer optionally includes a first support layer and a second support layer, and a gap exposing the bending region is formed between the first support layer and the second support layer;
when the bending area bends towards the non-light-emitting side of the display substrate, the functional layer is positioned between the first supporting layer and the second supporting layer.
In the flexible display panel, optionally, an edge of the functional layer near one side of the bending region is concave towards the display region.
Optionally, in the flexible display panel, along a direction in which the first supporting layer points to the second supporting layer, the functional layer sequentially includes: a first functional layer, a second functional layer, a third functional layer, and a fourth functional layer; wherein,
the vertical distance from the edge of the first support layer to the edge of the bending area is smaller than that from the edge of the first functional layer to the edge of the bending area, and the vertical distance from the edge of the first functional layer to the edge of the bending area is smaller than that from the edge of the second functional layer to the edge of the bending area;
the vertical distance from the edge of the third functional layer to the edge of the bending area is greater than the vertical distance from the edge of the fourth functional layer to the edge of the bending area, and the vertical distance from the edge of the fourth functional layer to the edge of the bending area is greater than the vertical distance from the edge of the second supporting layer to the edge of the bending area;
preferably, a vertical distance from an edge of the second functional layer to an edge of the bending region is equal to a vertical distance from an edge of the third functional layer to an edge of the bending region, a vertical distance from an edge of the first functional layer to an edge of the bending region is equal to a vertical distance from an edge of the fourth functional layer to an edge of the bending region, and a vertical distance from an edge of the first support layer to an edge of the bending region is equal to a vertical distance from an edge of the second support layer to an edge of the bending region.
Optionally, in the flexible display panel, along a direction in which the first supporting layer points to the second supporting layer, the functional layer sequentially includes: a first functional layer, a second functional layer, a third functional layer, and a fourth functional layer; wherein,
the edges of the first support layer, the first functional layer, the second functional layer, the third functional layer, the fourth functional layer and the second support layer are in a continuous semicircular structure, or in a continuous quasi-semicircular structure, or in a continuous semi-elliptical structure, or in a continuous quasi-semi-elliptical structure.
The flexible display panel as above may, optionally, be oriented with the first support layer towards the second support layer,
the first functional layer sequentially comprises a first bonding layer and a buffer layer;
the second functional layer sequentially comprises a first substrate layer and a shielding layer;
the third functional layer includes: a second adhesive layer;
the fourth functional layer comprises a second base material layer and a third bonding layer in sequence.
The flexible display panel as above, optionally, the material of the support layer is any one of glass, ceramic and plastic;
the first adhesive layer, the second adhesive layer and the third adhesive layer are made of any one of double-sided adhesive tape, adhesive tape and composite adhesive tape;
the buffer layer is made of foam;
the shielding layer is made of metal;
the first base material layer and the second base material layer are made of thermoplastic polyester and/or polyimide;
preferably, the material of the shielding layer is copper foil;
preferably, the material of the first substrate layer is polyimide, and the material of the second substrate layer is polyethylene terephthalate.
As above, optionally, when the bending region is bent toward the non-light-emitting side of the display substrate, the vertical distance from the edge of the polarizer to the edge of the bending region is greater than the vertical distance from the edge of the functional layer to the edge of the bending region.
In the flexible display panel, optionally, the edge of the polarizer close to one end of the bending region and far from the display substrate is rounded or at a right angle.
The flexible display panel as above, optionally, the display area having a display array; the non-display area is provided with a display driving circuit connected with the display array and a flexible circuit board connected with the display driving circuit, and the flexible circuit board is used for being connected with the circuit main board.
In a second aspect, embodiments of the present invention further provide a flexible display device, which includes a flexible display panel having any of the features of the first aspect.
The invention provides a flexible display panel and a flexible display device, wherein the structure of a polaroid is designed, so that one end of the polaroid, which is close to a bending area, is in a round angle with the edge of a display substrate in contact, and a certain space is reserved at the edge of the polaroid, which is in contact with the display substrate, so that the impact force of the polaroid and the edge of the display substrate in contact at the moment when the flexible display panel is impacted at the position is reduced, the risk of failure of the internal structure of the display substrate at the position is reduced, the impact resistance of the edge position of the flexible display panel is improved, and the.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a flexible display panel before being bent according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a flexible display panel after being bent according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of another flexible display panel according to an embodiment of the present invention after being bent;
fig. 4 is a schematic cross-sectional view of a bent flexible display panel according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a bent flexible display panel according to another embodiment of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of a flexible display panel after being bent according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a flexible display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Also, the drawings and description of the embodiments are to be regarded as illustrative in nature, and not as restrictive. Like reference numerals refer to like elements throughout the specification. In addition, the thickness of some layers, films, panels, regions, etc. may be exaggerated in the drawings for understanding and ease of description. It will also be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In addition, "on … …" means that an element is positioned on or under another element, but does not essentially mean that it is positioned on the upper side of the other element according to the direction of gravity. For ease of understanding, the figures of the present invention depict one element on top of another.
Additionally, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
It should also be noted that references to "and/or" in embodiments of the invention are intended to include any and all combinations of one or more of the associated listed items. Various components are described in embodiments of the present invention with "first", "second", "third", and the like, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Also, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
While certain embodiments may be practiced differently, the specific process sequence may be performed differently than described. For example, two processes described consecutively may be performed at substantially the same time or in an order reverse to that described.
Hereinafter, the structure of the flexible display panel, the flexible display device, and technical effects thereof will be described in detail.
An embodiment of the present invention provides a flexible display panel, including: the display substrate comprises a display area and a non-display area, wherein the non-display area comprises a bending area; the polaroid is arranged on one side of the light emitting surface of the display substrate, at least covers the display area, is close to one end of the bending area and is in a round angle with the edge of the display substrate in contact.
Specifically, fig. 1 shows a schematic cross-sectional structure of a flexible display panel provided by an embodiment of the present invention before bending, and fig. 2 shows a schematic cross-sectional structure of a flexible display panel provided by an embodiment of the present invention after bending. As shown in fig. 1 and 2, the flexible display panel includes: a display substrate 10, a polarizer 11, a support layer and a functional layer.
The display substrate 10 includes a display area AA and a non-display area NAA, the non-display area NAA includes a bending area 100 and a non-bending area 101, and the bending area 100 is located between the non-bending area 101 and the display area AA; the display substrate 10 has a first surface and a second surface opposite to each other, the first surface is a light-emitting surface, and the second surface is a non-light-emitting surface, for example, in fig. 1, the upper surface of the display substrate 10 is the first surface, and the lower surface is the second surface.
The polarizer 11 is disposed on the first surface, the polarizer 11 at least covers the display area AA, and an edge of the polarizer 11, which is close to one end of the bending area 100 and in contact with the first surface, is rounded. Therefore, the contact edge of the polarizer 11 and the display substrate 10 has a certain space, so that the polarizer 11 has a certain deformation space when the flexible display panel receives an impact resistance test (such as a small ball drop test), the impact force to the contact edge of the polarizer 11 and the display substrate 10 in the moment of impact is reduced, the risk of failure of the internal structure of the flexible display panel (such as wire breakage) is reduced, the impact resistance of the edge position of the flexible display panel is improved, and the product yield is improved.
The support layer is arranged on the non-light-emitting side (i.e. the second surface) of the display substrate 10. In one embodiment, the support layers include a first support layer 12a and a second support layer 12b with a gap between the first support layer 12a and the second support layer 12b exposing the inflection region 100.
The functional layer is arranged on the side of the support layer remote from the display substrate 10. Referring to fig. 2, when the bending region 100 is bent toward the non-light-emitting side of the display substrate 10, the functional layer is located between the first support layer 12a and the second support layer 12 b.
Specifically, along the direction in which the first support layer 12a points to the second support layer 12b, the functional layers sequentially include: a first functional layer 13a, a second functional layer 13b, a third functional layer 13c and a fourth functional layer 13 d.
In an embodiment, in the direction in which the first support layer 12a points towards the second support layer 12b,
the first functional layer 13a includes a first adhesive layer 131a and a buffer layer 132a in this order;
the second functional layer 13b includes a first base material layer 131b and a shield layer 132b in this order;
the third functional layer 13c is a second adhesive layer 13 c;
the fourth functional layer 13d includes a second base material layer 131d and a third adhesive layer 132d in this order.
The adhesive layer can play a role of an adhesive film layer; the buffer layer can relieve stress borne by the flexible display panel during bending; the shielding layer is used for electromagnetic shielding.
It is understood that the display area AA has a display array; for example, if the flexible display panel is an Organic Light-Emitting Diode (OLED) display panel, the display array is an OLED array. The non-display area NAA includes a display driver Circuit connected to the display array and a Flexible Printed Circuit (FPC) 14 connected to the display driver Circuit, and the FPC 14 is used for connection to a Circuit board.
In addition, in order to release the stress generated by the bending of the bending region 100 and protect the display substrate 10, the flexible display panel further includes a protection layer 15 disposed on the light emitting surface side (i.e., on the first surface) of the display substrate. Alternatively, the protective layer 15 may be a glue layer. The protective layer 15 may also function to fix the display substrate 10 and maintain the curved shape of the display substrate 10. Meanwhile, the protective layer 15 fills the gap between the fillet of the polarizer 11 and the display substrate 10, and the protective layer 15 has better elasticity than the polarizer, so that the impact force between the polarizer 11 and the display substrate when the position is impacted is further relieved.
In order to further reduce the impact force applied to the flexible display panel during an impact resistance test (such as a ball drop test), the film layer structure of the functional layer is designed. Specifically, in one embodiment, the edge of the functional layer near the bending region 100 is recessed toward the display region AA.
The edge of the functional layer near the side of the bending region 100 towards the display region AA is recessed: when the bending region 100 is bent toward the non-light-emitting side of the display substrate 10, the functional layer is recessed toward the display region AA in a step-like recess, a circular arc recess, or the like. Specifically, the functional layer is recessed stepwise toward the display area AA, which can be referred to the embodiment shown in fig. 2 or fig. 3 described below; the functional layer is recessed in the display area AA in a circular arc shape, which is described below with reference to the embodiment shown in fig. 4 or 5.
In one possible implementation, with continued reference to fig. 2, the perpendicular distance of the edge of the first support layer 12a from the edge of the inflection zone 100 is less than the perpendicular distance of the edge of the first functional layer 13a from the edge of the inflection zone 100, and the perpendicular distance of the edge of the first functional layer 13a from the edge of the inflection zone 100 is less than the perpendicular distance of the edge of the second functional layer 13b from the edge of the inflection zone 100. That is, the first support layer 12a, the first functional layer 13a and the second functional layer 13b have a stepped structure gradually receding toward the display area AA.
The perpendicular distance from the edge of the third functional layer 13c to the edge of the inflection zone 100 is greater than the perpendicular distance from the edge of the fourth functional layer 13d to the edge of the inflection zone 100, and the perpendicular distance from the edge of the fourth functional layer 13d to the edge of the inflection zone 100 is greater than the perpendicular distance from the edge of the second support layer 12b to the edge of the inflection zone 100. That is, the third functional layer 13c, the fourth functional layer 13d and the second support layer 12b have a step-like structure gradually extending toward the bending region 100.
Thus, the impact force transmitted from the edge of the polarizer 11 may not form a stress concentration inside the bending region 100 to cause internal structural failure (e.g., broken trace).
In addition, in order to reduce the process difficulty of the flexible display panel, the vertical distance from the edge of the second functional layer 13b to the edge of the bending region 100 may be equal to the vertical distance from the edge of the third functional layer 13c to the edge of the bending region 100, the vertical distance from the edge of the first functional layer 13a to the edge of the bending region 100 may be equal to the vertical distance from the edge of the fourth functional layer 13d to the edge of the bending region 100, and the vertical distance from the edge of the first support layer 12a to the edge of the bending region 100 may be equal to the vertical distance from the edge of the second support layer 12b to the edge of the bending region 100.
Further, fig. 3 is a schematic cross-sectional structure diagram of another flexible display panel provided in the embodiment of the present invention after being bent. Unlike the flexible display panel shown in fig. 2, the vertical distance of the edge of the first adhesive layer 131a from the edge of the bending region 100 is smaller than the vertical distance of the edge of the buffer layer 132a from the edge of the bending region 100; the vertical distance from the edge of the first substrate layer 131b to the edge of the bending region 100 is smaller than the vertical distance from the edge of the shielding layer 132b to the edge of the bending region 100; the vertical distance from the edge of the second substrate layer 131d to the edge of the bending area 100 is greater than the vertical distance from the edge of the third adhesive layer 132d to the edge of the bending area 100, so that the transition of the step-shaped structure between the film layers of the functional layer is more natural, and the stress buffering effect is improved.
In another possible implementation, the edges of the first support layer 12a, the first functional layer 13a, the second functional layer 13b, the third functional layer 13c, the fourth functional layer 13d and the second support layer 12b are in a continuous semicircular structure, or in a continuous semi-circular-like structure, or in a continuous semi-elliptical-like structure. For example, fig. 4 is a schematic cross-sectional view of a bent flexible display panel according to an embodiment of the present invention. Different from the flexible display panel shown in fig. 2, the edges of the first support layer 12a, the first functional layer 13a, the second functional layer 13b, the third functional layer 13c, the fourth functional layer 13d and the second support layer 12b are continuous semicircular structures, so that the impact force transmitted from the edge of the polarizer 11 in an impact resistance test (such as a ball drop test) process can be released to the greatest extent, and the risk of internal structure failure (such as broken routing) at the edge position of the polarizer 11 is greatly reduced.
Of course, in consideration of the process difficulty of the flexible display panel, fig. 5 shows a schematic cross-sectional structure diagram of another flexible display panel provided in the embodiment of the present invention after bending. Different from the flexible display panel shown in fig. 4, a chamfer may be formed at one side of the first support layer 12a, the first functional layer 13a, the second functional layer 13b, the third functional layer 13c, the fourth functional layer 13d, and the second support layer 12b close to the bending region 100, so that edges of the first support layer 12a, the first functional layer 13a, the second functional layer 13b, the third functional layer 13c, the fourth functional layer 13d, and the second support layer 12b are in a continuous semi-circular-like structure, which can greatly reduce the process difficulty of the flexible display panel and ensure the mass-producibility of the flexible display panel while ensuring the stress release effect.
In one embodiment, the material of the support layer is any one of glass, ceramic and plastic;
the first adhesive layer 131a, the second adhesive layer 13c and the third adhesive layer 132d are made of any one of a double-sided tape, an adhesive tape and a composite adhesive tape;
the buffer layer 132a is made of foam;
the material of the shielding layer 132b is metal; optionally, the material of the shielding layer 132b may also be a metal alloy or other non-metal materials with conductive properties.
For example, the material of the shielding layer 132b is copper foil.
The material of the first base material layer 131b and the second base material layer 131d is thermoplastic polyester and/or Polyimide (PI).
For example, the material of the first substrate layer 131b is polyimide PI, and the material of the second substrate layer 131d is Polyethylene Terephthalate (PET).
Referring to fig. 2 to 5, when the bending region 100 is bent toward the non-light-emitting side of the display substrate 10, the vertical distance from the edge of the polarizer 11 to the edge of the bending region 100 is greater than the vertical distance from the edge of the functional layer to the edge of the bending region 100. In this way, the validity of the display area AA can be ensured.
In one embodiment, the edge of the polarizer 11 near one end of the bending region 100 and far from the display substrate 10 is rounded or at a right angle. 2-5, the edge of the polarizer 11 away from the display substrate 10 is at a right angle; fig. 6 is a schematic cross-sectional structure diagram of a flexible display panel after bending, as shown in fig. 6, an edge of the polarizer 11 away from the display substrate 10 is rounded, so that consistency of two sides of the polarizer 11 is ensured, and a problem that the polarizer 11 may be attached reversely is avoided.
The present invention provides a flexible display panel, comprising: the display substrate comprises a display area and a non-display area, wherein the non-display area comprises a bending area and a non-bending area; the polaroid is arranged on one side of the light emitting surface of the display substrate, at least covers the display area, is close to one end of the bending area and is in a round angle with the edge of the display substrate in contact. Through the structure design to the polaroid, make the polaroid be close to the one end of bending zone, and be the fillet with the edge of display substrate contact, make the edge that polaroid and display substrate contact have certain space, thereby reduce the impact to polaroid and display substrate contact edge's impact force in the twinkling of an eye when flexible display panel accepts shock resistance test (if the bobble falls the test), reduce the risk that this position inner structure became invalid (if walk the line fracture), improve the shock resistance of flexible display panel border position, improve the product yield.
The embodiment of the invention also provides a flexible display device, and fig. 7 shows a schematic structural diagram of the flexible display device provided by the embodiment of the invention. As shown in fig. 7, the flexible display device 70 includes a flexible display panel 71 provided in any embodiment of the present invention.
The flexible display device 70 may also include a front camera and a sensor. The front camera and the sensor are correspondingly arranged below the display area of the flexible display panel 71. Optionally, besides the front camera and the sensor, other devices, such as a gyroscope or an earphone, may be disposed below the display area.
The flexible display panel 71 may be any one of display panels such as an Organic Light-Emitting Diode (OLED) display panel, an In-Plane Switching (IPS) display panel, a Twisted Nematic (TN) display panel, a Vertical Alignment (VA) display panel, electronic paper, a Quantum Dot Light Emitting (QLED) display panel, or a micro LED (micro Light Emitting Diode, μ LED) display panel, which is not particularly limited In this respect. The light emitting mode of the flexible display panel 71 may be top emission, bottom emission, or double-sided emission.
The flexible display device 70 provided by the embodiment of the present invention may be applied to an intelligent wearable device (such as an intelligent bracelet and an intelligent watch), and may also be applied to a smart phone, a tablet computer, a display, and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A flexible display panel, comprising:
the display substrate comprises a display area and a non-display area, wherein the non-display area comprises a bending area;
the polaroid is arranged on one side of the light emitting surface of the display substrate, at least covers the display area, and one end, close to the bending area, of the polaroid is in a round angle with the edge, contacted with the display substrate, of the polaroid.
2. The flexible display panel of claim 1, further comprising:
the supporting layer is arranged on the non-light-emitting side of the display substrate;
the functional layer is arranged on one side, far away from the display substrate, of the supporting layer;
and the protective layer is arranged on one side of the light-emitting surface of the display substrate and fills a gap between the fillet of the polaroid and the display substrate.
3. The flexible display panel of claim 2, wherein the support layer comprises a first support layer and a second support layer with a gap therebetween that exposes the bend region;
when the bending area bends towards the non-light-emitting side of the display substrate, the functional layer is positioned between the first supporting layer and the second supporting layer;
preferably, when the bending region is bent towards the non-light-emitting side of the display substrate, the protective layer at least covers the bending region of the display substrate.
4. The flexible display panel of claim 3, wherein an edge of the functional layer on a side close to the bending region is recessed toward the display region.
5. The flexible display panel of claim 4, wherein the functional layer comprises, in order in a direction from the first support layer to the second support layer: a first functional layer, a second functional layer, a third functional layer, and a fourth functional layer; wherein,
the vertical distance from the edge of the first support layer to the edge of the bending area is smaller than the vertical distance from the edge of the first functional layer to the edge of the bending area, and the vertical distance from the edge of the first functional layer to the edge of the bending area is smaller than the vertical distance from the edge of the second functional layer to the edge of the bending area;
the vertical distance from the edge of the third functional layer to the edge of the bending area is greater than the vertical distance from the edge of the fourth functional layer to the edge of the bending area, and the vertical distance from the edge of the fourth functional layer to the edge of the bending area is greater than the vertical distance from the edge of the second support layer to the edge of the bending area;
preferably, a vertical distance from an edge of the second functional layer to an edge of the bending region is equal to a vertical distance from an edge of the third functional layer to an edge of the bending region, a vertical distance from an edge of the first functional layer to an edge of the bending region is equal to a vertical distance from an edge of the fourth functional layer to an edge of the bending region, and a vertical distance from an edge of the first support layer to an edge of the bending region is equal to a vertical distance from an edge of the second support layer to an edge of the bending region.
6. The flexible display panel of claim 4, wherein the functional layer comprises, in order in a direction from the first support layer to the second support layer: a first functional layer, a second functional layer, a third functional layer, and a fourth functional layer; wherein,
the edges of the first support layer, the first functional layer, the second functional layer, the third functional layer, the fourth functional layer and the second support layer are of continuous semicircular structures, or continuous semi-circular structures, or continuous semi-elliptical structures.
7. The flexible display panel of claim 5 or 6, wherein, in a direction in which the first support layer points towards the second support layer,
the first functional layer sequentially comprises a first bonding layer and a buffer layer;
the second functional layer sequentially comprises a first base material layer and a shielding layer;
the third functional layer comprises a second adhesive layer;
the fourth functional layer comprises a second base material layer and a third bonding layer in sequence.
8. The flexible display panel of claim 1, wherein when the bending region is bent toward the non-light-emitting side of the display substrate, a vertical distance between an edge of the polarizer and an edge of the bending region is greater than a vertical distance between an edge of the functional layer and an edge of the bending region.
9. The flexible display panel of claim 1, wherein the edge of the polarizer near one end of the bending region and far away from the display substrate is rounded or square.
10. A flexible display device comprising a flexible display panel according to any one of claims 1-9.
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Application publication date: 20210518 |