CN111564568A

CN111564568A - Display panel and display device

Info

Publication number: CN111564568A
Application number: CN202010419388.4A
Authority: CN
Inventors: 田宏伟; 赵梦; 于洋; 牛亚男; 刘政
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-08-21
Anticipated expiration: 2040-05-18
Also published as: CN111564568B

Abstract

The disclosure relates to a display panel and a display device, and relates to the technical field of display. The display panel comprises a flexible substrate, a display layer and a light blocking layer, wherein the display layer is arranged on one side of the flexible substrate and is provided with a bending area and a flat area adjacent to the bending area, and the bending area is provided with a plurality of first sub-pixels; the light blocking layer is located in the bending area and comprises a plurality of light blocking structures, orthographic projections of the light blocking structures on the flexible substrate are located outside orthographic projections of the first sub-pixels on the flexible substrate, and each light blocking structure is located between at least one first sub-pixel and the flat area so as to block at least part of light rays emitted by the first sub-pixels from transmitting to the flat area.

Description

Display panel and display device

Technical Field

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

Background

The display panel is an essential component in electronic equipment such as mobile phones, computers, televisions and the like. Currently, as for a flexible Display panel such as a curved panel and a foldable panel, an Organic electroluminescent Display (OLED) panel is widely used to meet the demand of modeling. However, in the case of a foldable display panel, a boundary between the flat region and the bent region is prone to cause abnormal light emission, for example, yellowing, which results in a yellow edge, and thus the display effect is affected.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The present disclosure is directed to overcome the above-mentioned deficiencies in the prior art, and provide a display panel and a display device, which can reduce the risk of yellowing at the edge of a bendable display panel, and improve the display effect.

According to an aspect of the present disclosure, there is provided a display panel including:

a flexible substrate;

the display layer is arranged on one side of the flexible substrate and is provided with a bending area and a flat area adjacent to the bending area, and the bending area is provided with a plurality of first sub-pixels;

the light blocking layer is located in the bending area and comprises a plurality of light blocking structures, the orthographic projection of each light blocking structure on the flexible substrate is located outside the orthographic projection of the first sub-pixel on the flexible substrate, and each light blocking structure is located between at least one first sub-pixel and the flat area so as to block at least part of light rays emitted by the first sub-pixel from transmitting to the flat area.

In an exemplary embodiment of the present disclosure, the number of the flat regions is one, the number of the light blocking structures is less than the number of the first sub-pixels, and the density of the light blocking structures decreases in a direction away from the flat regions.

In an exemplary embodiment of the disclosure, the bending regions and the flat regions are distributed along a row direction, the light blocking structures are distributed in an array, and the light blocking structures located in a same column in a column direction are distributed as an integral structure or at intervals.

In an exemplary embodiment of the present disclosure, the display layer includes:

the driving layer is arranged on one side of the flexible substrate;

the light-emitting functional layer is arranged on the surface of the driving layer, which is far away from the flexible substrate;

an encapsulation layer covering the light emitting functional layer;

the light blocking layer is arranged on the surface of the packaging layer, which is far away from the flexible substrate.

In an exemplary embodiment of the present disclosure, the display layer further includes:

and the touch layer is arranged on the surface of the packaging layer, which deviates from the flexible substrate, and is insulated from the light blocking layer.

In an exemplary embodiment of the present disclosure, the light blocking layer includes:

the light absorption layer is arranged on the surface of the packaging layer, which is far away from the flexible substrate;

and the light reflecting layer covers the light absorbing layer.

the driving layer is arranged on one side of the flexible substrate and is provided with a convex part protruding in a direction away from the flexible substrate;

the first electrode layer covers the driving layer and protrudes in the area covering the protruding part, and the first electrode layer is made of a light-reflecting material; the light blocking layer comprises a region where the first electrode layer covers the protruding part;

the light-emitting layer is arranged on the surface, away from the flexible substrate, of the first electrode layer, and the orthographic projection of the light-emitting layer on the driving layer is located outside the protruding part;

and a second electrode layer covering the light emitting layer.

In an exemplary embodiment of the present disclosure, the light blocking layer further includes:

the supporting layer, the surface that the supporting layer deviates from the flexible substrate is located to the bulge.

In an exemplary embodiment of the present disclosure, the driving layer includes:

the active layer is arranged on one side of the flexible substrate;

a gate insulating layer covering the active layer;

the grid electrode is arranged on the surface of the grid insulating layer, which is deviated from the flexible substrate;

an insulating layer covering the gate electrode and the gate insulating layer;

the capacitor electrode is arranged on the surface of the insulating layer, which is far away from the flexible substrate;

a dielectric layer covering the capacitor electrode and the insulating layer;

the source drain layer is arranged on the surface of the dielectric layer, which is deviated from the flexible substrate, and comprises a source electrode and a drain electrode which are connected with the active layer; the supporting layer and the source drain layer are arranged on the same layer;

and the flat layer covers the source drain layer and the support layer, and protrudes in a region corresponding to the support layer to form the protruding part.

According to an aspect of the present disclosure, there is provided a display device including the display panel of any one of the above.

The display panel and the display device can obtain the display panel in a folded or curved shape by bending the bending area of the display layer and the area of the flexible substrate corresponding to the bending area. After the bending, the light emitted by the first sub-pixel of the bending area can be blocked by the light blocking structures of the light blocking layer, and the light emitted by the bending area to the flat area is reduced, so that the phenomenon that yellowing occurs at the edge of the flat area due to light scattering and fluorescence effect is improved, the interference of emergent light of the bending area to the flat area is reduced, and the display effect is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic distribution diagram of a light blocking layer in an embodiment of a display panel according to the present disclosure.

Fig. 2 is a top view of a curved display panel according to an embodiment of the disclosure.

Fig. 3 is a side view of a curved display panel in an embodiment of the disclosure.

Fig. 4 is a top view of a bendable display panel according to an embodiment of the disclosure before bending.

Fig. 5 is a side view of a bendable display panel according to an embodiment of the disclosure after bending.

Fig. 6 is a cross-sectional view of an embodiment of a display panel according to the present disclosure.

Fig. 7 is a cross-sectional view of another embodiment of a display panel of the present disclosure.

Fig. 8 is a cross-sectional view of yet another embodiment of a display panel according to the present disclosure.

Fig. 9 is a schematic view of light blocking structures distributed at intervals according to an embodiment of the display panel of the disclosure.

Fig. 10 is a schematic view of a light blocking structure of an integrated structure according to an embodiment of the display panel of the present disclosure.

Fig. 11 is a schematic view of a light blocking structure according to an embodiment of the display panel of the present disclosure.

Fig. 12 is a schematic view of another light blocking structure in an embodiment of a display panel according to the present disclosure.

Description of reference numerals:

1. a flexible substrate; 101. a substrate; 102. a buffer layer; 2. a display layer; 21. a first sub-pixel; 21a, a red first sub-pixel; 21b, a green first sub-pixel; 21c, a blue first sub-pixel; 22. a second sub-pixel; 22a, a red second sub-pixel; 22b, a green second sub-pixel; 22c, a blue second sub-pixel; 201. a drive layer; 2011. an active layer; 2012. a gate insulating layer; 2013. a gate electrode; 2014. an insulating layer; 2015. a capacitive electrode; 2016. a dielectric layer; 2017. a source electrode; 2018. a drain electrode; 2019. a planarization layer; 2019a, a first flat layer; 2019b, a second flat layer; 20191. a projection; 202. a light-emitting functional layer; 2021. a first electrode layer; 2022. a pixel defining layer; 2023. a light emitting layer; 2024. a second electrode; 203. a packaging layer; 204. a touch layer; 200. a support layer; 200a, a first support layer; 200b, a second support layer; 3. a light-blocking layer; 31. a light blocking structure; 301. a light absorbing layer; 302. a light-reflecting layer; 4. a polarizer; 5. a cover plate; 6. a first separation layer; 7. a second spacer layer.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.

In the related art, the bendable display panel may include at least a curved display panel and a foldable display panel, wherein: the curved display panel includes a flat region and a bending region located at an edge of the flat region, and the bending region may be a curved structure bent to form a certain angle with the flat region, for example, two bending regions are located at two sides of the flat region. The foldable display panel includes a bending region and flat regions at both sides of the bending region, and the flat regions are foldable by bending the bending region.

For the bendable display panel, after bending, when light rays in the bending region pass through each film layer, scattering and fluorescence effects are generated, so that the light rays emitted from the bending region and concentrated on the edge of the flat region are yellowed, and the edge of the flat region generates a yellow bright edge, thereby affecting the display effect.

The present disclosure provides a display panel, as shown in fig. 1, including a flexible substrate 1, a display layer 2, and a light blocking layer 3, wherein:

the display layer 2 is stacked on one side of the flexible substrate 1 and is provided with a bending area W and a flat area S adjacent to the bending area W, and the bending area W is provided with a plurality of first sub-pixels 21;

the light blocking layer 3 is located in the bending region W and includes a plurality of light blocking structures 31, an orthographic projection of each light blocking structure 31 on the flexible substrate 1 is located outside an orthographic projection of the first sub-pixel 21 on the flexible substrate 1, and each light blocking structure 31 is located at least between one first sub-pixel 21 and the flat region S to block at least part of light emitted by the first sub-pixel 21 from propagating to the flat region S.

The display panel according to the embodiment of the present disclosure may be folded or curved by bending the bending region W of the display layer 2 and the region of the flexible substrate 1 corresponding to the bending region W. After bending, the light emitted by the first sub-pixel 21 of the bending area W can be blocked by the light blocking structures 31 of the light blocking layer 3, and the light emitted by the bending area W to the flat area S is reduced, so that yellowing at the edge of the flat area S due to scattering and fluorescence effects of the light of the bending area W is improved, interference of emergent light of the bending area W to the flat area S is reduced, and the display effect is improved.

The following describes each part of the display panel according to the embodiment of the present disclosure in detail:

the material of the flexible substrate 1 may be PI (polyimide), and of course, PET (polyethylene terephthalate) or other flexible materials may be used as long as they can be bent. The shape and size of the flexible substrate 1 are not particularly limited herein.

As shown in fig. 6, the flexible substrate 1 may have a single-layer structure or a multi-layer structure, for example, the flexible substrate 1 may include a base 101 made of a flexible material and a buffer layer 102 laminated on one side of the base 101.

The display layer 2 is disposed on the flexible substrate 1 side, and for example, it may be laminated on the surface of the buffer layer 102 facing away from the base 101.

The display layer 2 has a bending region W and a flat region S, and the bending region W is adjacent to the flat region S and can be used for displaying images. The flat region S may be in a flat state, and the bending region W and the corresponding flexible substrate 1 may be bent simultaneously, thereby forming a certain bending angle with the flat region S.

In some embodiments of the present disclosure, as shown in fig. 2 and 3, the display panel is a curved display panel, the number of the flat areas S is one, and the bending areas W are distributed at the edge of the flat areas S, for example, the number of the bending areas W is two and distributed at two sides of the flat areas S. Meanwhile, the bending region W is bent at a fixed bending angle toward the backlight side of the flat region S.

In other embodiments of the present disclosure, as shown in fig. 4 and 5, the display panel is a foldable display panel, the number of the bending regions W may be one, the number of the flat regions S is two and the flat regions S are distributed on two sides of the bending region W, and the two flat regions S can be folded by bending the bending region W.

As shown in fig. 1, the bending region W has a plurality of first sub-pixels 21 distributed in an array, and each of the first sub-pixels 21 is used for emitting light to display an image. All the first sub-pixels 21 may be divided into a plurality of first pixels, each of which includes a plurality of first sub-pixels 21, and the first sub-pixels 21 in each of the first pixels may include red first sub-pixels 21a, green first sub-pixels 21b, and blue first sub-pixels 21c, but of course, may also include other colors of first sub-pixels 21. The number of first sub-pixels 21 of any color within the same first pixel may be one or more.

Meanwhile, as shown in fig. 1, the flat region S has a plurality of second sub-pixels 22 distributed in an array, all of the second sub-pixels 22 may be divided into a plurality of second pixels, each of the second pixels includes a plurality of second sub-pixels 22, and the second sub-pixels 22 in each of the pixels may include a red second sub-pixel 22a, a green second sub-pixel 22b, and a blue second sub-pixel 22c, and of course, may include other colors of second sub-pixels 22. The number of first sub-pixels 21 of any color within the same second pixel may be one or more.

It should be noted that the first sub-pixel 21 and the second sub-pixel 22 are only named differently for sub-pixels in different regions, and are not limited to two kinds of sub-pixels with different structures, that is, the first sub-pixel 21 and the second sub-pixel 22 may be sub-pixels with the same structure, but are located in different regions.

As shown in fig. 1, the light-blocking layer 3 is located in the bending region W, and the light-blocking layer 3 may include a plurality of light-blocking structures 31, and the light-blocking structures 31 may be strip-shaped structures extending along a straight line, a curved line, or a broken line. The orthographic projection of each light blocking structure 31 on the flexible substrate 1 is positioned outside the orthographic projection of the first sub-pixel 21 on the flexible substrate 1, that is, in the direction perpendicular to the flexible substrate 1, the light blocking structure 31 does not block the light emission of the first sub-pixel 21, and the normal display is prevented from being influenced. Further, there is a certain distance between the orthographic projection of the light blocking structure 31 on the flexible substrate 1 and the orthographic projection of the first sub-pixel 21 on the flexible substrate 1, and in some embodiments of the present disclosure, the minimum distance between the orthographic projection of the light blocking structure 31 on the flexible substrate 1 and the orthographic projection of the first sub-pixel 21 on the flexible substrate 1 may be 5 μm.

Meanwhile, each light blocking structure 31 can be at least located between one first sub-pixel 21 and the flat area S, and in a direction parallel to the bending area W, at least a part of light emitted by the first sub-pixel 21 can be blocked from being transmitted to the flat area S, so that yellow bright edges generated at the edge of the flat area S by the light emitted by the bending area W are reduced, even avoided, and accordingly reduced.

The light blocking layer 3 can correspondingly block the light generated by each first sub-pixel 21 to the flat area S through each light blocking structure 31; of course, only part of the light emitted from the first sub-pixel 21 to the flat region S may be blocked.

In some embodiments of the present disclosure, as shown in fig. 1, the display panel is a curved display panel, the number of the flat regions S is one, and the edge of the bending region W adjacent to the flat region S. The number of light blocking structures 31 is less than the number of first sub-pixels 21, and the density of the light blocking structures 31 decreases in a direction away from the flat region S. Taking any bending region W as an example, a plurality of regions can be divided in the bending region W according to the distance from the boundary between the bending region W and the flat region S, for example, a region having a distance from the boundary between the bending region W and the flat region S smaller than a first specified distance is a first region; the distance between the bending area W and the boundary of the flat area S is smaller than a first specified distance, and the area smaller than a second specified distance is a second area; an area at a distance greater than a second prescribed distance from the boundary of the inflection region W and the flat region S is a third area. The first specified distance is less than the second specified distance, which is less than the third specified distance.

Since the first area is closer to the flat area S, the number of the light blocking structures 31 in the first area is not less than the number of the first sub-pixels 21, and at least one light blocking structure 31 for blocking the first sub-pixel 21 from transmitting light to the flat area S can be disposed on one side of each first sub-pixel 21 close to the flat area S.

In the second region, the number of the light-blocking structures 31 is less than that of the first sub-pixels 21, the light-blocking structures 31 are disposed only on one side of a portion of the first sub-pixels 21 close to the flat region S, and blue light has a shorter wavelength and higher energy than red light and green light, and is more likely to generate scattering and fluorescence effects, so if the number of the light-blocking structures 31 is less than that of the first sub-pixels 21, the light-blocking structures 31 are preferentially disposed on one side of the blue first sub-pixels 21c close to the flat region S.

In the third region, the light blocking structure 31 may not be provided.

In some embodiments of the present disclosure, the display panel is a curved display panel, the number of the flat areas S is one, the edge of the bending area W adjacent to the flat area S is adjacent to the edge of the bending area W, the number of the light blocking structures 31 is not less than the number of the first sub-pixels 21, at least one light blocking structure 31 may be disposed on one side of each first sub-pixel 21 close to the flat area S, so as to block light emitted from the first sub-pixel 21 to the flat area S to the greatest extent.

In some embodiments of the present disclosure, the display panel is a foldable display panel, the number of the bending regions W may be one, and the number of the flat regions S is two and is distributed on two sides of the bending region W. Both sides of each first sub-pixel 21, i.e. the sides opposite to the two flat regions S, are provided with light blocking structures 31. After folding, no matter which flat area S is used as the main display surface facing the user, the edge can be prevented from yellowing. Of course, one of the two flat regions S may be preset to face the main display surface of the user, and the other flat region S may be the back surface, in which case, the light blocking structure 31 may be disposed on a side of each first sub-pixel 21 adjacent to the flat region S as the main display surface.

As shown in fig. 1, since the interference of the first sub-pixels 21 closer to the flat region S is larger, in some embodiments of the present disclosure, the bending region W and the flat region S may be distributed along a row direction, in which at least a portion of the light blocking structure 31 is located between the flat region S and the first sub-pixel 21 closest to the flat region S, so as to block at least the light emitted from the first sub-pixel 21 closest to the flat region S.

In some embodiments of the present disclosure, as shown in fig. 10, the bending area W and the flat area S may be distributed along the row direction, and in the bending area W, the light blocking structures 31 are distributed in an array, and the light blocking structures 31 located in the same column in the column direction may be an integrated structure, that is, the light blocking structures 31 in the same column may be connected into a whole, so as to improve the light blocking effect. Alternatively, in other embodiments of the present disclosure, as shown in fig. 9, the light blocking structures 31 in the same row may be spaced, but the size of the spacing is not limited herein.

Each of the light blocking structures 31 in the same column may extend along the column direction, may extend along a direction forming an angle with the column direction, or may be in the shape shown in fig. 11 and 12 or other shapes as long as they are distributed along the column direction.

It should be noted that the column direction and the row direction only refer to two different directions crossing each other, and do not refer to the horizontal direction and the vertical direction in particular, and those skilled in the art can understand that the actual orientations of the row direction and the column direction may change with the change of the position of the display panel.

The following structure of the display layer 2 exemplifies the structure of the light blocking layer 3:

as shown in fig. 6, in some embodiments of the present disclosure, the display layer 2 may include a driving layer 201 and a light emitting function layer 202, wherein:

the driving layer 201 is disposed on one side of the flexible substrate 1, and may include a plurality of pixel driving circuits, each sub-pixel includes one pixel driving circuit, each pixel driving circuit includes at least one driving transistor, taking the driving transistor as a thin film transistor with a top gate structure as an example: the driving layer 201 may include an active layer 2011, a gate insulating layer 2012, a gate 2013, an insulating layer 2014, a capacitor electrode 2015, a dielectric layer 2016 and a source drain layer, a material of the active layer 2011 may include low-temperature polysilicon, the active layer 2011, the gate 2013 and the capacitor electrode 2015 are opposite in a direction perpendicular to the flexible substrate 1, the gate 2013 and the capacitor electrode 2015 may form a capacitor, and the source drain layer includes a source 2017 and a drain 2018 and is connected to two ends of the active layer 2011.

In addition, the driving layer 201 may further include a planarization layer 2019 covering the source drain layer and the dielectric layer 2016.

The light emitting function layer 202 is disposed on a surface of the driving layer 201 away from the flexible substrate 1, and includes light emitting units corresponding to the pixel driving circuits one by one, and the light emitting units may serve as the first sub-pixels 21. The light emitting function layer 202 may include a first electrode layer 2021, a pixel defining layer 2022, a light emitting layer 2023, and a second electrode 2024, in which:

the first electrode layer 2021 and the pixel defining layer 2022 are both disposed on the surface of the driving layer 201 away from the flexible substrate 1, and include a plurality of first electrodes, and at least a partial region of each first electrode is exposed by the pixel defining layer 2022. The pixel defining layer 2022 may be used to define a plurality of light emitting cells.

The light-emitting layer 2023 is provided in a region of the first electrode layer 2021 exposed by the pixel defining layer 2022, and the light-emitting layer 2023 may include at least a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer, which are stacked in a direction away from the flexible substrate 1.

The second electrode 2024 covers the pixel defining layer 2022 and the light-emitting layer 2023, and the light-emitting layer 2023 can emit light by applying an electric signal to the first electrode of the first electrode layer 2021 and the second electrode 2024.

Based on the display layer 2 of the above embodiments, the light blocking layer 3 may be disposed on the same layer as part of the film layer of the first sub-pixel 21, as shown in fig. 7, in some embodiments of the disclosure, the driving layer 201 may have a protrusion 20191 protruding in a direction away from the flexible substrate 1 through a gray-scale mask or other processes, the first electrode layer 2021 is made of a light-reflective material, the light blocking layer 3 includes a region where the protrusion 20191 is covered by the first electrode layer 2021, so that light can be blocked by the first electrode layer 2021 covering the protrusion 20191, and each light blocking structure 31 may include one first electrode layer 2021 covering the protrusion 20191. Meanwhile, the orthographic projection of the light-emitting layer 2023 on the driving layer 201 is located outside the convex portion 20191, and the blocking effect of the light blocking structure 31 is ensured.

The thickness of the flat layer 2019 in the region where the protrusions 20191 are not formed may be 1 μm to 3 μm, and the thickness of the protrusions 20191 may be 1.2 to 3 times, for example, 1.2 μm to 9 μm, as large as the thickness of the region where the protrusions 20191 are not formed.

Further, the light blocking layer 3 may further include a support layer 200, and the protrusions 20191 are disposed on a surface of the support layer 200 facing away from the flexible substrate 1. The support layer 200 may be disposed at the same layer as the source and drain layers of the display layer 2 in order to simplify the process. The planarization layer 2019 covers the source-drain layer and the support layer 200, and is raised in a region corresponding to the support layer 200 to form a projection 20191. The support layer 200 may also be made of a light blocking material so that light may be blocked.

Of course, the projections 20191 are also formed on the flat layer 2019 without using the support layer 200.

As shown in fig. 8, in other embodiments of the present disclosure, the number of the support layer 200 and the flat layer 2019 may be plural, for example, the support layer 200 includes a first support layer 200a and a second support layer 200b, the flat layer 2019 includes a first flat layer 2019a and a second flat layer 2019b, wherein the first support layer 200a is disposed in the same layer as the source-drain layer, the first flat layer 2019a covers the source-drain layer and the first support layer 200a, the second support layer 200b is disposed at a position where the first flat layer 2019a corresponds to the first support layer 200a, the second flat layer 2019b covers the first flat layer 2019a and the second support layer 200b and is protruded at a position corresponding to the second support layer 200b to form a protrusion 20191, the first electrode layer 2021 may cover the protrusion 20191, and a region where the first electrode layer 2021 covers the protrusion 20191 serves as the light blocking structure 31.

Further, in order to increase the height of the light blocking structure 31, the second planarization layer 2019b between the protrusion 20191 and the light emitting layer 2023 may be at least partially removed to form a groove, and the first electrode layer 2021 extends into the groove, which is equivalent to increase the height of the protrusion 20191, so as to increase the area of the first electrode layer 2021, which is beneficial to increase the light blocking effect.

In some embodiments of the present disclosure, as shown in fig. 6, the light blocking layer 3 may be located on a side of each first sub-pixel 21 facing away from the flexible substrate 1, for example: the display panel may further include an encapsulation layer 203, the encapsulation layer 203 covers the light emitting function layer 202, and the encapsulation layer 203 may have a single-layer or multi-layer structure, for example, the encapsulation layer 203 may include two inorganic layers and an organic layer between the two inorganic layers. The light blocking layer 3 is provided on the surface of the encapsulation layer 203 facing away from the flexible substrate 1.

Further, the light blocking layer 3 may include a light absorbing layer 301 and a light reflecting layer 302, wherein:

the light absorbing layer 301 may be provided on a surface of the encapsulation layer 203 facing away from the flexible substrate 1. The material of the light absorbing layer 301 may include a light absorbing material such as manganese oxide. The light reflecting layer 302 may be a light reflecting metal material, which may cover the light absorbing layer 301.

Of course, the light-blocking layer 3 may also be a single layer structure, and may be made of black ink or other materials capable of blocking light, and is not particularly limited herein.

Further, as shown in fig. 6, in some embodiments of the present disclosure, the display panel may further include a touch layer 204, which may be disposed on a surface of the encapsulation layer 203 facing away from the flexible substrate 1, and is used for sensing a touch operation of a user and generating a touch signal. The touch layer 204 may include touch electrodes, and the specific touch principle is not limited herein. The touch layer 204 and the light blocking layer 3 may be disposed in an insulating manner at the same layer.

As shown in fig. 6, in some embodiments of the present disclosure, the display panel may further include a polarizer 4 and a cover plate 5, where the polarizer 4 is disposed on a side of the touch layer 204 away from the flexible substrate 1, and the cover plate 5 may be made of a transparent material and is disposed on a side of the polarizer 4 away from the flexible substrate 1. In addition, an insulating first separation layer 6 is arranged between the polarizer 4 and the touch layer 204, and an insulating second separation layer 7 may be arranged between the cover plate 5 and the polarizer 4.

The embodiments of the present disclosure further provide a display device, which includes the display panel of any of the above embodiments, and the specific structure and beneficial effects of the display panel are described in detail in the above embodiments of the display panel, which are not described again here. The display device may be a mobile phone, a tablet computer, a television, etc., and is not particularly limited herein.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A display panel, comprising:

a flexible substrate;

2. The display panel according to claim 1, wherein the number of the flat regions is one, the number of the light-blocking structures is less than the number of the first sub-pixels, and the density of the light-blocking structures decreases in a direction away from the flat regions.

3. The display panel according to claim 1, wherein the bending regions and the flat regions are distributed along a row direction, the light blocking structures are distributed in an array, and the light blocking structures located in a same column in a column direction are distributed as a single structure or at intervals.

4. The display panel according to claim 1, wherein the display layer comprises:

the driving layer is arranged on one side of the flexible substrate;

an encapsulation layer covering the light emitting functional layer;

5. The display panel of claim 4, wherein the display layer further comprises:

6. The display panel according to claim 4, wherein the light-blocking layer comprises:

and the light reflecting layer covers the light absorbing layer.

7. The display panel according to claim 1, wherein the display layer comprises:

and a second electrode layer covering the light emitting layer.

8. The display panel according to claim 7, wherein the light-blocking layer further comprises:

9. The display panel according to claim 8, wherein the driving layer comprises:

the active layer is arranged on one side of the flexible substrate;

a gate insulating layer covering the active layer;

an insulating layer covering the gate electrode and the gate insulating layer;

a dielectric layer covering the capacitor electrode and the insulating layer;

10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.