WO2020010535A1

WO2020010535A1 - Flexible display panel and flexible display device

Info

Publication number: WO2020010535A1
Application number: PCT/CN2018/095212
Authority: WO
Inventors: 毕广洪; 张琨; 施文杰
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2018-07-11
Filing date: 2018-07-11
Publication date: 2020-01-16
Also published as: CN112544001A; CN112544001B

Abstract

Provided is a flexible display panel (10), which comprises an organic electroluminescent display layer (100) and an absorption layer (200), wherein the absorption layer is arranged on one side of the organic electroluminescent display layer, and comprises a first surface (210) and a second surface (220), which are oppositely arranged, the second surface is arranged more adjacent to the organic electroluminescent display layer than the first surface, the absorption layer is used for absorbing external light incident from the first surface and absorbing external light incident from the second surface after being reflected, so that the ratio of the intensity of the external light emitted from the first surface to the intensity of the incident external light is less than a preset value. Further provided is a flexible display device. The thickness of the flexible display panel is low and the absorption layer therein can absorb external light, thereby reducing the reflection of external light, and improving the display contrast of the flexible display panel.

Description

Flexible display panel and flexible display device

Technical field

The present invention relates to the field of display technology, and in particular, to a flexible display panel and a flexible display device.

Background technique

Since the organic electroluminescence display panel has a certain reflectance, a circular polarizer is currently used in the display panel to reduce the reflection of natural light from the outside, thereby improving the display contrast of the display panel under sunlight. Circular polarizers generally consist of a polyvinyl alcohol film layer, upper and lower protective layers that protect the polyvinyl alcohol film layer, and a 1/4 wavelength compensation film. The oriented iodine molecules in the polyvinyl alcohol film have dichroism, which can convert natural light into linearly polarized light. After passing through the 1/4 wavelength compensation film, it will become circularly polarized light rotating in one direction. After the electrodes in the electroluminescent layer reflect, they return to the 1/4 wavelength compensation film and the polyvinyl alcohol film layer in turn, and transform into light parallel to the absorption axis of the polyvinyl alcohol film layer, thereby achieving the principle of extinction. Traditional circular polarizers require a large amount of film materials during the manufacturing process, such as cellulose triacetate film, polyvinyl alcohol film, compensation film, and adhesive materials. The thickness is generally more than 100 μm. Due to the thicker thickness and the use of a large number of film materials, breaking problems will occur during the bending process, which cannot meet the requirements of flexible products.

Summary of the invention

In view of this, the present invention provides a flexible display panel with a low thickness and capable of reducing reflection of external light. Specific technical solutions are as follows.

A flexible display panel includes:

Organic electroluminescence display layer;

An absorption layer located on one side of the organic electroluminescence display layer, the absorption layer including a first surface and a second surface opposite to each other, the second surface being adjacent to the first surface compared to the first surface An organic electroluminescence display layer is provided, and the absorption layer is configured to absorb external light incident from the first surface and absorb external light incident from the second surface after being reflected so as to emit from the first surface. The ratio of the ambient light intensity to the incident ambient light intensity is less than a preset value.

Preferably, the flexible display panel further includes:

A touch electrode layer, which is disposed on one side of the organic electroluminescence display layer;

An optical adhesive layer disposed on a side of the touch electrode layer away from the organic electroluminescence display layer;

A cover layer disposed on a side of the optical adhesive layer away from the touch electrode layer.

Preferably, the absorption layer is located on a surface of the touch electrode layer away from the organic electroluminescence display layer, and the absorption layer is located between the touch electrode layer and the optical adhesive layer.

Preferably, the absorption layer is located on a surface of the optical adhesive layer away from the touch electrode layer, and the absorption layer is located between the optical adhesive layer and the cover layer.

Preferably, the absorption layer includes light-absorbing particles and optical colloid particles, and the light-absorbing particles are dispersed in the optical colloid particles.

Preferably, the absorption layer includes an optical adhesive layer and light absorbing particles doped in the optical adhesive layer.

Preferably, the flexible display panel further includes a touch electrode layer and a cover layer;

The touch electrode layer is disposed on one side of the organic electroluminescence display layer;

The absorption layer is disposed on a side of the touch electrode layer away from the organic electroluminescence display layer;

The cover layer is disposed on a side of the absorption layer away from the touch electrode layer;

The absorption layer is used for bonding the touch electrode layer and the cover layer.

Preferably, a hardening coating is provided on the surface of the absorption layer, the absorption layer can absorb external light, and the hardening coating is used to protect the organic electroluminescence display layer.

Preferably, the absorption layer includes a cover layer and light absorbing particles doped in the cover layer.

Preferably, the flexible display panel further includes a touch electrode layer and an optical adhesive layer;

The optical adhesive layer is disposed on a side of the touch electrode layer away from the organic electroluminescence display layer;

The absorption layer is disposed on a side of the optical adhesive layer away from the touch electrode layer;

The hardened coating is disposed on a surface of the absorption layer remote from the optical adhesive layer.

The absorption layer is disposed on a side of the optical adhesive layer away from the touch electrode layer, and covers the optical adhesive layer.

Preferably, the organic electroluminescent display layer includes a cathode, a light-emitting layer, and an anode; the light-emitting layer is disposed on a surface of the anode, and the cathode is disposed on a surface of the light-emitting layer remote from the anode;

The absorption layer is disposed on a side of the anode that is far from the light-emitting layer. The light transmittance of the anode is greater than the light transmittance of the cathode. The absorption layer is used to absorb external light reflected from the cathode.

Preferably, the cathode is opaque and the anode is a transparent or translucent material.

Preferably, the organic electroluminescent display layer includes a cathode, a light-emitting layer, and an anode; the light-emitting layer is disposed on a surface of the anode; and the cathode is disposed on a surface of the light-emitting layer remote from the anode;

The absorption layer is disposed on a side of the cathode far from the light-emitting layer. The light transmittance of the cathode is greater than the light transmittance of the anode. The absorption layer is used to absorb reflections from the cathode and the anode. Outside light.

Preferably, the anode is opaque, and the cathode is semi-reflective and translucent.

Preferably, a first microstructure and a second microstructure are provided on the surface of the absorbing layer remote from the organic electroluminescence display layer, and a portion of external light incident on the first microstructure is partially covered by the first microstructure. A microstructure is absorbed, and part of the external light incident on the first microstructure is reflected by the first microstructure to the second microstructure and absorbed by the second microstructure.

Preferably, a flat layer is provided on a surface of the absorption layer, the first microstructure, and the second microstructure far from the organic electroluminescent display layer, and the flat layer is transparent.

Preferably, the thickness of the absorption layer is 1-50 μm.

Preferably, the light transmittance of the absorption layer to light emitted by the organic electroluminescence display layer is greater than 50%.

Preferably, the absorption layer is black.

Preferably, the absorption layer includes at least one of a black dye, a black rubber material, and a black film material.

The invention also provides a flexible display device, which comprises the flexible display panel according to any one of the above.

The beneficial effect of the present invention is that the thickness of the flexible display panel provided by the present invention is relatively low and the absorption layer therein can absorb external light, thereby reducing the reflection of external light and improving the display contrast of the flexible display panel.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present invention more clearly, the drawings used in the embodiments are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can obtain other drawings according to these drawings without paying creative labor.

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

2 is a schematic structural diagram of a flexible display panel according to a second embodiment of the present invention;

3 is a schematic structural diagram of a flexible display panel according to a third embodiment of the present invention;

4 is a schematic structural diagram of a flexible display panel according to a fourth embodiment of the present invention;

5 is a schematic structural diagram of a flexible display panel according to a fifth embodiment of the present invention;

6 is a schematic structural diagram of a flexible display panel according to a sixth embodiment of the present invention;

7 is a schematic structural diagram of a flexible display panel according to a seventh embodiment of the present invention;

8 is a schematic structural diagram of a flexible display panel according to an eighth embodiment of the present invention;

9 is a schematic structural diagram of a flexible display panel according to a ninth embodiment of the present invention;

10 is a schematic structural diagram of a flexible display panel according to a tenth embodiment of the present invention;

11 is a schematic structural diagram of another flexible display panel according to a tenth embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a flexible display device provided by the present invention.

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second", and the like in the description and claims of the present invention and the drawings are used to distinguish different objects and are not used to describe a specific order. Furthermore, the terms "including" and "having", as well as any of them, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device containing a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. It is clearly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Referring to FIG. 1, a first embodiment of the present invention provides a flexible display panel 10. The flexible display panel 10 includes an organic electroluminescent display layer 100 and an absorption layer 200. The absorption layer 200 is located on one side of the organic electroluminescence display layer 100. The absorption layer 200 includes a first surface 210 and a second surface 220 opposite to each other. The second surface 220 is adjacent to the organic electroluminescence display layer compared to the first surface 210. 100, the absorption layer 200 is configured to absorb external light incident from the first surface 210 and absorb external light incident from the second surface 220 after being reflected, so that the intensity of the external light emitted from the first surface 210 and the incident external light The ratio of the intensity is less than a preset value. It can be understood that the external light refers to light other than light emitted from the flexible display panel 10 itself. As shown in FIG. 1, after the external light L is incident on the absorption layer 200, part of the external light L (referred to as L1) is not absorbed by the absorption layer 200 and enters the organic electroluminescence display layer 100, and part of L1 is displayed by the organic electroluminescence The layer 100 absorbs, and another portion L1 (referred to as L2) is reflected by the organic electroluminescence display layer 100, and is incident again into the absorption layer 200 from the second surface 220. The portion L2 is absorbed by the absorption layer 200, and the remaining portion is not absorbed. L2 (referred to as L3) is emitted from the first surface 210. Finally, the ratio of the light intensity of L3 to the light intensity of L is smaller than a preset value, so that the overall external light reflectance of the flexible display panel 10 is reduced. It can be understood that, in this embodiment, the preset value is 6%. Taking the absorption rate of the absorption layer 200 as 50% and the reflectance of the organic electroluminescent display layer 100 as an example, the light intensity of L3 is recorded as I3, the light intensity of L is recorded as I, and the final light intensity I3 of L3 is calculated = I * (1-50%) * 24% * (1-50%) = 6% I, that is, the ratio of the light intensity of L3 to the light intensity of L is 6%. When the absorptance of the absorption layer 200 is larger and the reflectivity of the organic electroluminescent display layer 100 is smaller, the final ratio will be smaller. The absorption rate of the absorption layer 200 can be controlled by adjusting the material selection, thickness, color depth, etc. of the absorption layer 200. It can be understood that the absorption layer 200 may be a black absorption layer or a dark absorption layer. Preferably, when the absorption layer 200 is a black absorption layer, the absorption layer 200 includes at least one of a black dye, a black rubber material, and a black film material.

The conventional flexible display panel 10 provided by the present invention does not use a conventional thick circular polarizer, so that the thickness of the flexible display panel 10 is low, and the absorption layer 200 therein can absorb external light, thereby reducing reflection of external light and improving flexible display. The display contrast of the panel 10.

Referring to FIG. 2, a second embodiment of the present invention provides a flexible display panel 10 a. The flexible display panel 10 a further includes a touch electrode layer 300, an optical adhesive layer 400, and a cover layer 500. The touch electrode layer 300 is disposed on one side of the organic electroluminescence display layer 100, the optical adhesive layer 400 is disposed on a side of the touch electrode layer 300 away from the organic electroluminescence display layer 100, and the cover layer 500 is disposed on the optical adhesive layer 400 The side far from the touch electrode layer 300. The absorption layer 200 may be located on the same side of the organic electroluminescence display layer 100 as the touch electrode layer 300, the optical adhesive layer 400, and the cover layer 500, or may be located on both sides of the organic electroluminescence display layer 100, respectively.

In a further embodiment, the absorption layer 200 is located on a surface of the optical adhesive layer 400 away from the touch electrode layer 300, and the absorption layer 200 is located between the optical adhesive layer 400 and the cover layer 500. The absorbing layer 200 is disposed above the touch electrode layer 300 and can absorb the reflected light reflected from the touch electrode layer 300. It can be understood that the relative refractive index of the absorption layer 200 can be controlled by adjusting the material and thickness of each layer adjacent to the absorption layer 200 to increase the transmission of light and reduce the gap between the absorption layer 200 and the touch electrode layer 300. Interface reflection.

Referring to FIG. 3, a third embodiment of the present invention provides a flexible display panel 10b. In the flexible display panel 10b, the absorption layer 200 is located on a surface of the touch electrode layer 300 away from the organic electroluminescence display 100, and the absorption layer 200 Located between the touch electrode layer 300 and the optical adhesive layer 400. The absorption layer 200 is disposed above the touch electrode layer 300 and is disposed adjacent to the touch electrode layer 300 to better absorb the reflected light reflected from the touch electrode layer 300. It can be understood that the relative refractive index of the absorbing layer 200 can be controlled by adjusting the material and thickness of each layer adjacent to the absorbing layer 200 to increase the transmission of light and reduce the absorption between the absorbing layer 200 and the optical adhesive layer 400. Interface reflection.

Referring to FIG. 4, a fourth embodiment of the present invention provides a flexible display panel 10 c. In the flexible display panel 10 c, the absorption layer 200 includes light absorbing particles 230 and optical colloid particles 240, and the light absorbing particles 230 are dispersed in the optical colloid particles 240. . The light absorbing particles 230 can absorb external light, and the optical colloid particles 240 can adhere to the film layer in contact with them. For example, the absorption layer 200 is used for bonding the touch electrode layer 300 and the cover layer 500 provided on both sides of the absorption layer 200. Specifically, referring to FIG. 4, the flexible display panel 10 c includes a touch electrode layer 300 and a cover layer 500. The touch electrode layer 300 is disposed on one side of the organic electroluminescence display layer 100, and the absorption layer 200 is disposed away from the touch electrode layer 300. On the side of the organic electroluminescent display layer 100, the cover layer 500 is disposed on the side of the absorption layer 200 away from the touch electrode layer 300. The light absorbing particles 230 and the optical colloid particles 240 are mixed to form the absorbing layer 200, which can not only absorb external light, but also play a bonding role, and including the above two functions in the same layer can reduce the thickness of the flexible display panel 10c. It can be understood that, in this embodiment, the light-absorbing particles 230 may be a black dye.

Referring to FIG. 5, a fifth embodiment of the present invention provides a flexible display panel 10 d. In the flexible display panel 10 d, the absorption layer 200 includes an optical adhesive layer 400 and light-absorbing particles 230 doped in the optical adhesive layer 400. That is, the light-absorbing particles 230 are doped in the optical adhesive layer 400. The optical adhesive layer 400 and the light-absorbing particles 230 together constitute the absorption layer 200. The light-absorbing particles 230 can absorb external light, and the optical adhesive layer 400 is used for bonding and bonding. The layer where it meets. For example, the absorption layer 200 is used for bonding the touch electrode layer 300 and the cover layer 500 provided on both sides of the absorption layer 200. The absorption layer 200 can not only absorb external light, but also play a bonding role. Doping the light-absorbing particles 230 in the optical adhesive layer 400 further reduces the thickness of the flexible display panel 10d.

Referring to FIG. 6, a sixth embodiment of the present invention provides a flexible display panel 10e. In the flexible display panel 10e, the surface of the absorption layer 200 is provided with a hardening coating 250. The absorption layer 200 can absorb external light. For protecting the organic electroluminescence display layer 100. It can be understood that the hard coating layer 250 may be applied on the surface of the absorption layer 200 through a surface hardening process. It can be understood that the hard coating layer 250 may be disposed on any one of the upper and lower surfaces of the absorption layer 200. Preferably, the hardening coating layer 250 may be disposed on a surface of the absorption layer 200 away from the organic electroluminescence display layer 100, so as to protect the absorption layer 200 from abrasion or pressure loss of external devices. It can be understood that, in this embodiment, the absorption layer 200 may be a black organic layer, such as a black polyimide film layer.

In a further embodiment, the flexible display panel 10e includes a touch electrode layer 300 and an optical adhesive layer 400. The touch electrode layer 300 is disposed on one side of the organic electroluminescent display layer 100, and the optical adhesive layer 400 is disposed on the touch screen. The electrode layer 300 is away from the organic electroluminescence display layer 100, the absorption layer 200 is disposed on the side of the optical adhesive layer 400 away from the touch electrode layer 300, and the hardened coating 250 is disposed on the surface of the absorption layer 200 away from the optical adhesive layer 400. on. And cover the absorption layer 200. The hard coating layer 250 is used to protect the touch electrode layer 300 and the organic electroluminescence display layer 100 provided in the flexible display panel 10e.

Referring to FIG. 7, a seventh embodiment of the present invention provides a flexible display panel 10 f. In the flexible display panel 10 f, the absorption layer 200 includes a cover layer 500 and light-absorbing particles 230 doped in the cover layer 500. It can also be understood that the cover layer 500 is directly used as the absorption layer 200 to further reduce the overall thickness of the flexible display panel 10f.

In a further embodiment, the flexible display panel 10f includes a touch electrode layer 300 and an optical adhesive layer 400. The touch electrode layer 300 is disposed on one side of the organic electroluminescent display layer 100, and the optical adhesive layer 400 is disposed on the touch screen. The electrode layer 300 is located away from the organic electroluminescence display layer 100, and the absorption layer 200 is disposed on the side of the optical adhesive layer 400 away from the touch electrode layer 300 and covers the optical adhesive layer 400. In this embodiment, the absorption layer 200 is used to absorb external light and also to protect the touch electrode layer 300 and the organic electroluminescent display layer 100 provided in the flexible display panel 10f.

Referring to FIG. 8, an eighth embodiment of the present invention provides a flexible display panel 10 g. In the flexible display panel 10 g, the organic electroluminescent display layer 100 includes a cathode 110, a light-emitting layer 120, and an anode 130. The light emitting layer 120 is disposed on a surface of the anode 130, and the cathode 110 is disposed on a surface of the light emitting layer 120 away from the anode 130. The absorption layer 200 is disposed on a side of the anode 130 away from the light emitting layer 120. The light transmittance of the anode 130 is greater than the light transmittance of the cathode 110. The absorption layer 200 is used to absorb external light reflected from the cathode 110. This embodiment is applied to a light emitting side located on a side of the anode 130 away from the cathode 110, that is, a bottom-emitting display panel. Preferably, the cathode 110 is opaque, and the anode 130 is a transparent or translucent material, so that the light emitted by the light-emitting layer 120 is emitted from the anode 130.

Referring to FIG. 9, a ninth embodiment of the present invention provides a flexible display panel 10 h. In the flexible display panel 10 h, the organic electroluminescent display layer 100 includes a cathode 110, a light-emitting layer 120, and an anode 130. The light emitting layer 120 is disposed on a surface of the anode 130, and the cathode 110 is disposed on a surface of the light emitting layer 120 away from the anode 130. The absorption layer 200 is disposed on a side of the cathode 130 away from the light-emitting layer 120. The light transmittance of the cathode 110 is greater than the light transmittance of the anode 130. The absorption layer 200 is used to absorb external light reflected from the cathode 110 and the anode 130. This embodiment is applied to a light emitting side located on a side of the cathode 110 away from the anode 130, that is, a top-emitting display panel. Preferably, the anode 130 is opaque, and the cathode 110 is semi-reflective and translucent.

Referring to FIG. 10, a tenth embodiment of the present invention provides a flexible display panel 10i. In the flexible display panel 10i, the first microstructures 260 are arranged on the surface of the absorption layer 200 away from the organic electroluminescent display layer 100. And the second microstructure 270, part of the external light incident on the first microstructure 260 is absorbed by the first microstructure 260, and part of the external light incident on the first microstructure 260 is reflected by the first microstructure 260 to the second microstructure 270 And absorbed by the second microstructure 270. Providing the first microstructure 260 and the second microstructure 270 on the absorption layer 200 improves the absorption rate of external light and further reduces the reflectance of the flexible display panel 10g to external light. It can be understood that a plurality of first microstructures 260 and second microstructures 270 may be disposed on the absorption layer 200, and the first microstructures 260 and the second microstructures 270 are disposed at intervals. It can be understood that the shapes of the first microstructure 260 and the second microstructure 270 may be various, such as a triangular pyramid, a conical shape, or an irregular shape. Referring to the external light line in FIG. 10, after part of the external light L incident on the first microstructure 260 is absorbed by the first microstructure 260, part of the external light L4 is reflected by the first microstructure 260, and L4 is incident on the second microstructure 260. Structure 270, part L4 is absorbed by the second microstructure 270, and another part L4 (L5 in the figure) is retroreflected by the second microstructure 270. After the external light L is incident, after being absorbed twice on the surface of the microstructure, the light intensity of the finally reflected L5 is weaker, so that the reflectivity of the flexible display panel 10i to external light is further reduced. It can be understood that the angles of the reflecting surface and the incident surface of the first microstructure 260 and the second microstructure 270 can be controlled, so that external light can be absorbed three times or more to further reduce the reflectivity.

Please refer to FIG. 11. In a further embodiment, a flat layer 600 is disposed on a surface of the absorption layer 200, the first microstructure 260 and the second microstructure 270 away from the organic electroluminescent display layer 100. The flat layer 600 is transparent . The flat layer 600 can flatten the surface of the flexible display panel 10i, prevent the first microstructure 260 and the second microstructure 270 from scratching other devices provided on the flexible display panel 10g, or can protect the first microstructure 260 and the second microstructure. The structure 270 avoids abrasion of other film layers or devices, which leads to a decrease in the absorption effect.

In a further embodiment, the thickness of the absorption layer 200 is 1-50 μm. Compared with the traditional polarizer, it can reduce the thickness of 65-200μm, greatly reducing the thickness of the product and improving the bending performance.

In a further embodiment, the light transmittance of the absorption layer 200 to light emitted by the organic electroluminescent display layer 100 is greater than 50%. In the present invention, the absorbing layer 200 not only has a good absorption rate for external light, but also has a good light transmittance for the light emitted from the light emitting layer 120, which improves the brightness of the product, or in the case of the same display brightness, Can reduce luminous power and save energy.

Referring to FIG. 12, the present invention further provides a flexible display device 20. The flexible display device 20 includes the flexible display panel 10 described in any one of the above embodiments. The flexible display device 20 may be, but is not limited to, e-books, smart phones (such as Android phones, iOS phones, Windows Phone phones, etc.), tablet computers, flexible handheld computers, flexible notebook computers, and mobile Internet devices (MID, Mobile Internet Devices). ) Or a wearable device, or may be an organic light-emitting diode (OLED) flexible display device, an active matrix organic light-emitting diode (AMOLED) flexible display device.

The above-mentioned embodiments only express several implementation manners of the present invention, and their descriptions are more specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

A flexible display panel, characterized in that the flexible display panel includes:

Organic electroluminescence display layer;

An absorption layer, the absorption layer being located on one side of the organic electroluminescence display layer, the absorption layer including a first surface and a second surface opposite to each other, the second surface being adjacent to the first surface compared to the first surface An organic electroluminescence display layer is provided, and the absorption layer is configured to absorb external light incident from the first surface and absorb external light incident from the second surface after being reflected so as to emit from the first surface. The ratio of the ambient light intensity to the incident ambient light intensity is less than a preset value.
The flexible display panel according to claim 1, wherein the flexible display panel further comprises:

A touch electrode layer, which is disposed on one side of the organic electroluminescence display layer;

An optical adhesive layer disposed on a side of the touch electrode layer away from the organic electroluminescence display layer;

A cover layer disposed on a side of the optical adhesive layer away from the touch electrode layer.
The flexible display panel according to claim 2, wherein the absorption layer is located on a surface of the touch electrode layer away from the organic electroluminescence display layer, and the absorption layer is located on the touch electrode Between the layer and the optical adhesive layer.
The flexible display panel according to claim 2, wherein the absorption layer is located on a surface of the optical adhesive layer away from the touch electrode layer, and the absorption layer is located on the optical adhesive layer and the optical adhesive layer. Between overlays.
The flexible display panel according to claim 1, wherein the absorption layer comprises light-absorbing particles and optical colloid particles, and the light-absorbing particles are dispersed in the optical colloid particles.
The flexible display panel according to claim 1, wherein the absorption layer comprises an optical adhesive layer and light absorbing particles doped in the optical adhesive layer.
The flexible display panel according to claim 5 or 6, wherein the flexible display panel further comprises a touch electrode layer and a cover layer;

The touch electrode layer is disposed on one side of the organic electroluminescence display layer;

The absorption layer is disposed on a side of the touch electrode layer away from the organic electroluminescence display layer;

The cover layer is disposed on a side of the absorption layer away from the touch electrode layer;

The absorption layer is used for bonding the touch electrode layer and the cover layer.
The flexible display panel according to claim 1, wherein a surface of the absorption layer is provided with a hardening coating layer, the absorption layer can absorb external light, and the hardening coating layer is used to protect the organic electroluminescence display. Floor.
The flexible display panel according to claim 1, wherein the absorption layer comprises a cover layer and light absorbing particles doped in the cover layer.
The flexible display panel according to claim 8, wherein the flexible display panel further comprises a touch electrode layer and an optical adhesive layer;

The touch electrode layer is disposed on one side of the organic electroluminescence display layer;

The optical adhesive layer is disposed on a side of the touch electrode layer away from the organic electroluminescence display layer;

The absorption layer is disposed on a side of the optical adhesive layer away from the touch electrode layer;

The hardened coating is disposed on a surface of the absorption layer remote from the optical adhesive layer.
The flexible display panel according to claim 9, wherein the flexible display panel further comprises a touch electrode layer and an optical adhesive layer;

The touch electrode layer is disposed on one side of the organic electroluminescence display layer;

The optical adhesive layer is disposed on a side of the touch electrode layer away from the organic electroluminescence display layer;

The absorption layer is disposed on a side of the optical adhesive layer away from the touch electrode layer, and covers the optical adhesive layer.
The flexible display panel according to claim 1, wherein the organic electroluminescence display layer comprises a cathode, a light emitting layer, and an anode; the light emitting layer is disposed on a surface of the anode, and the cathode is disposed on the surface of the anode. A surface of the light-emitting layer remote from the anode;

The absorption layer is disposed on a side of the anode that is far from the light-emitting layer. The light transmittance of the anode is greater than the light transmittance of the cathode. The absorption layer is used to absorb external light reflected from the cathode.
The flexible display panel according to claim 12, wherein the cathode is opaque, and the anode is a transparent or translucent material.
The flexible display panel according to claim 1, wherein the organic electroluminescence display layer comprises a cathode, a light-emitting layer, and an anode; the light-emitting layer is disposed on a surface of the anode; and the cathode is disposed on the surface of the anode. A surface of the light-emitting layer remote from the anode;

The absorption layer is disposed on a side of the cathode far from the light-emitting layer. The light transmittance of the cathode is greater than the light transmittance of the anode. The absorption layer is used to absorb reflections from the cathode and the anode. Outside light.
The flexible display panel according to claim 14, wherein the anode is opaque, and the cathode is semi-reflective and translucent.
The flexible display panel according to claim 1, wherein a first microstructure and a second microstructure disposed at intervals on the surface of the absorption layer remote from the organic electroluminescence display layer are incident on the surface The external light portion of the first microstructure is absorbed by the first microstructure, and the external light portion incident on the first microstructure is reflected by the first microstructure to the second microstructure and is reflected by the second Microstructure absorption.
The flexible display panel according to claim 16, wherein a flat layer is provided on a surface of the absorption layer, the first microstructure, and the second microstructure far from the organic electroluminescent display layer, and the flat layer Be transparent.
The flexible display panel according to claim 1, wherein the thickness of the absorption layer is 1-50 μm.
The flexible display panel according to claim 1, wherein a transmittance of the absorption layer to light emitted from the organic electroluminescence display layer is greater than 50%.
The flexible display panel according to claim 1, wherein the absorption layer is black.
The flexible display panel according to claim 20, wherein the absorption layer comprises at least one of a black dye, a black adhesive material, and a black film material.
A flexible display device, characterized in that the flexible display device comprises the flexible display panel according to any one of claims 1-21.