阅读说明：本技术 显示面板及显示装置 (Display panel and display device ) 是由 杨炳伟 郑爽 何雨濛 汪顺 樊星 于 2021-08-05 设计创作，主要内容包括：本公开提供了一种显示面板及显示装置,属于显示技术领域。该显示面板包括由每相邻的两个凹槽构成的阻挡坝,以及位于凹槽内的阻挡增强部。因该阻挡增强部沿远离衬底基板的方向宽度逐渐增大,即该阻挡增强部靠近衬底基板一侧的宽度最大,故该阻挡增强部可以将外界应力集中于阻挡坝靠近衬底基板的一侧,避免因外界应力随处发散而导致裂缝自由延伸的问题。本公开提供的显示面板中,挡坝和阻挡增强部相互配合对裂缝的阻挡可靠性较高。(The disclosure provides a display panel and a display device, and belongs to the technical field of display. The display panel includes a barrier dam formed of two adjacent grooves, and a barrier enhancing part located in the grooves. Because this block reinforcing part along keeping away from the direction width crescent of substrate base plate, should block that the reinforcing part is close to the width of substrate base plate one side the biggest promptly, so should block reinforcing part and can concentrate external stress in the one side that blocks the dam and be close to the substrate base plate, avoid leading to the problem that the crack freely extends because of external stress is dispersed everywhere. In the display panel provided by the disclosure, the blocking reliability of the dam and the blocking reinforcing part for the crack is high.)

1. A display panel, comprising:

a substrate base having a display area and a non-display area, the non-display area surrounding the display area;

an inorganic layer on one side of the substrate base plate;

the grooves penetrate through the inorganic layer, the grooves are positioned in the non-display area and are arranged at intervals along the direction close to the display area, and the inorganic layer between every two adjacent grooves forms a blocking dam; each blocking dam is rectangular;

and a plurality of barrier enhancements within the plurality of grooves; each barrier enhancing portion is provided with at least three edges, the at least three edges are connected in pairs, and the width of each barrier enhancing portion in the direction close to the display area is gradually increased along the direction close to the substrate base plate.

2. The display panel according to claim 1, wherein each of the barrier enhancing parts has three sides in total of a first side, a second side, and a third side;

wherein the first edge is perpendicular to the substrate base plate; the second edge is parallel to the substrate base plate; the third edge and the substrate base plate form an acute angle.

3. The display panel according to claim 2, wherein the first edge and the second edge are both straight lines, and the third edge is a straight line or an arc line.

4. The display panel according to claim 2, wherein a third side of the barrier enhancing portion that is farthest from the display area is close to the display area, and a third side of the barrier enhancing portion that is closest to the display area is far from the display area.

5. The display panel according to claim 2, wherein third sides of at least two adjacent barrier enhancing portions intersect.

6. The display panel according to claim 5, wherein the third sides of two adjacent barrier enhancing portions closest to the display area intersect and/or the third sides of two adjacent barrier enhancing portions farthest from the display area intersect.

7. The display panel according to any one of claims 1 to 6, wherein the number of the plurality of grooves is the same as the number of the plurality of barrier enhancing portions; one of the barrier enhancing portions is located in one of the grooves, and each of the barrier enhancing portions is located in a different one of the grooves.

8. The display panel according to any one of claims 1 to 6, wherein a height of each of the barrier enhancing portions in a direction approaching the substrate base is greater than 10% and less than 70% of a height of the groove.

9. The display panel according to any one of claims 1 to 6, wherein the material of each of the barrier enhancing portions comprises: an inorganic material or a metal material, and a mechanical strength of a material of each of the barrier enhancing parts is equal to or greater than a mechanical strength of a material of the inorganic layer.

10. A display device, characterized in that the display device comprises: a power supply assembly, and a display panel as claimed in any one of claims 1 to 9;

the power supply assembly is electrically connected with the display panel and used for supplying power to the display panel.

Technical Field

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

Background

An Organic Light Emitting Diode (OLED) display panel is widely used in the display field due to its advantages of being thin, self-emitting, bendable, and capable of being fabricated on a flexible substrate.

In the related art, an OLED display panel (especially, a flexible OLED display panel) generally includes: the display device comprises a substrate base plate with a display area and a non-display area, a blocking dam which is positioned in the non-display area and is columnar, and an organic light-emitting material positioned in the display area. The blocking dam can be used for blocking the problem that the organic light-emitting material in the display area fails due to the fact that cracks generated by the edge of the OLED display panel due to external stress extend to the display area.

However, the blocking dam in the related art cannot ensure the propagation direction of the external stress applied to the display panel, and has low blocking reliability against cracks.

Disclosure of Invention

The embodiment of the disclosure provides a display panel and a display device, which can solve the problem that the blocking reliability of a blocking dam to a crack is low in the related art. The technical scheme is as follows:

in one aspect, there is provided a display panel including:

a substrate base having a display area and a non-display area, the non-display area surrounding the display area;

an inorganic layer on one side of the substrate base plate;

the grooves penetrate through the inorganic layer, the grooves are positioned in the non-display area and are arranged at intervals along the direction close to the display area, and the inorganic layer between every two adjacent grooves forms a blocking dam; each blocking dam is rectangular;

and a plurality of barrier enhancements within the plurality of grooves; each barrier enhancing portion is provided with at least three edges, the at least three edges are connected in pairs, and the width of each barrier enhancing portion in the direction close to the display area is gradually increased along the direction close to the substrate base plate.

Optionally, each of the blocking enhancing parts has three sides including a first side, a second side and a third side;

wherein the first edge is perpendicular to the substrate base plate and is adjacent to the side wall of the groove; the second edge is parallel to the substrate base plate and is adjacent to the bottom of the groove; the third edge and the substrate base plate form an acute angle.

Optionally, the first edge and the second edge are both straight lines, and the third edge is a straight line or an arc line.

Optionally, a third edge of the blocking enhancing part farthest from the display area is close to the display area, and a third edge of the blocking enhancing part closest to the display area is far from the display area.

Optionally, third sides of at least two adjacent barrier reinforcements intersect.

Optionally, third sides of two adjacent barrier enhancing portions closest to the display area intersect, and/or third sides of two adjacent barrier enhancing portions farthest from the display area intersect.

Optionally, the number of the plurality of grooves is the same as the number of the plurality of barrier enhancing portions; each of the barrier enhancing portions is located in one of the grooves, and each of the barrier enhancing portions is located in a different one of the grooves.

Optionally, in a direction approaching the substrate base plate, a height of each of the barrier enhancing portions is greater than 10% of a height of the groove and less than 70% of the height of the groove.

Optionally, the material of each barrier enhancing portion comprises: an inorganic material or a metal material, and a mechanical strength of a material of each of the barrier enhancing parts is equal to or greater than a mechanical strength of a material of the inorganic layer.

In another aspect, there is provided a display device including: a power supply assembly, and a display panel as described in the above aspect;

the power supply assembly is electrically connected with the display panel and used for supplying power to the display panel.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

a display panel and a display device are provided. The display panel includes a barrier dam formed of two adjacent grooves, and a barrier enhancing part located in the grooves. Because this block reinforcing part along keeping away from the direction width crescent of substrate base plate, should block that the reinforcing part is close to the width of substrate base plate one side the biggest promptly, so should block reinforcing part and can concentrate external stress in the one side that blocks the dam and be close to the substrate base plate, avoid leading to the problem that the crack freely extends because of external stress is dispersed everywhere. In the display panel provided by the embodiment of the disclosure, the blocking reliability of the dam and the blocking reinforcing part for the crack is high.

Drawings

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

Fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another display panel provided in the embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of another display panel provided in the embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another display panel provided in an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of another display panel provided in an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of another display panel provided in an embodiment of the present disclosure;

fig. 7 is a schematic diagram illustrating a partial region stress simulation of a display panel according to an embodiment of the disclosure;

FIG. 8 is a schematic diagram illustrating a partial area stress simulation of another display panel provided in an embodiment of the present disclosure;

FIG. 9 is a schematic diagram illustrating a partial area stress simulation of another display panel provided by an embodiment of the present disclosure;

FIG. 10 is a schematic diagram illustrating a partial area stress simulation of another display panel according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The terminology used in the description of the embodiments of the present disclosure is for the purpose of describing the embodiments of the present disclosure only and is not intended to be limiting of the present disclosure. Unless otherwise defined, technical or scientific terms used in the embodiments of the present disclosure should have the ordinary meaning as understood by those having ordinary skill in the art to which the present disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes. Reference to "and/or" in embodiments of the disclosure means that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Since the flexible OLED display panel abandons a rigid encapsulation process, cracks (cracks) are easily generated at the edges thereof under the action of external stress. The crack can extend to the display area of the flexible OLED display panel, so that water and oxygen in the air enter the display area through the crack to cause the failure of the organic light-emitting material in the display area, and then the black spot which grows continuously in the display area can be generated, namely the bad phenomenon of GDS in the display area. In addition, since a Back Plane (BP) film layer of the flexible OLED display panel is generally formed by stacking an organic film layer and an inorganic film layer, the bonding between the film layers is not ideal, and thus, the external stress may cause peeling between the film layers. The flexible OLED display panel has low product reliability.

At present, in order to ensure better product reliability of the flexible OLED display panel, the non-display region of the flexible OLED display panel generally includes a blocking dam. The design of the dam is mainly divided into two types: one is to arrange metal wiring around the display area; the other method is to etch the inorganic film layer to form grooves (also called gaps) and columnar structures which are arranged at intervals, and buffer the external stress through the gaps.

However, both of the above-mentioned implementations cannot guarantee the extension direction of the stress and thus the propagation direction of the crack. For example, for the above another implementation, since the column portion of the blocking dam is integrally formed with the bottom portion of the same material, the fracture of the column portion is likely to cause the crack to extend toward the bottom portion, cause the film layers to fall off, and cause the multi-stage blocking dam to fail.

The embodiment of the disclosure provides a display panel, which can effectively prevent a crack occurring at an edge from extending to a display area or other film layers, and effectively protect the display panel.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure. As shown in fig. 1, the display panel includes: a base substrate 01 having a display area a1 and a non-display area B1. Wherein the non-display region B1 may surround the display region a 1. Of course, in some embodiments, in combination with fig. 1, the non-display area B1 may be located only on the upper side, the left side, the right side, or the lower side of the display area a 1.

Fig. 2 shows a cross-sectional view of the display panel shown in fig. 1 in the MM' direction. As shown in fig. 2, the display panel may further include: an inorganic layer 02 on one side of the base substrate 01, a plurality of grooves C0 penetrating the inorganic layer 02, and a plurality of barrier enhancing parts 03 located within the plurality of grooves C0.

The plurality of grooves C0 are located in the non-display region B1 and are arranged at intervals along a direction X1 close to the display region a 1. The plurality of grooves C0 may block cracks occurring at the edge of the display substrate to prevent the cracks from extending toward the display area a1, and thus, in the embodiment of the present disclosure, the inorganic layer 02 between every two adjacent grooves C0 may be referred to as a blocking Dam 04, that is, the inorganic layer 02 between every two adjacent grooves C0 may constitute a blocking Dam 04, and the blocking Dam 04 may also be referred to as a Crack Dam (Crack Dam).

In the disclosed embodiment, each of the blocking dams 04 is rectangular. Each barrier enhancing portion 03 has at least three sides connected two by two, and the width d0 of each barrier enhancing portion 03 in the direction X1 close to the display area a1 is gradually increased in the direction X2 close to the base substrate 01. The shape of the barrier enhancing portion 03 may refer to an enlarged schematic view of the barrier enhancing portion 03 shown in fig. 2. Wherein each barrier reinforcement 03 shown in fig. 2 comprises three sides L1, L2, and L3, L1 being connected to L2, L2 being connected to L3, and L3 being connected to L1. Accordingly, the shape shown in fig. 2 may also be referred to as a triangle, i.e., the barrier reinforcement 03 has a triangular structure.

In conjunction with the shape of the barrier enhancing portion 03, referring to fig. 3, the barrier enhancing portion 03 can concentrate (i.e., directly act on) the external stress on the side of the barrier dam 04 close to the substrate base plate 01 (i.e., the bottom of the barrier dam 04), so as to guide the external stress, so that the external stress can be propagated only in the y direction shown in fig. 3. Therefore, the problem that the external stress is randomly dispersed upwards and/or downwards to cause the cracks to freely propagate along different directions is effectively avoided. For example, the problem that the cracks propagate to the side close to the substrate 01, and the stacked films in the BP film layer are peeled off can be avoided.

In summary, the embodiments of the present disclosure provide a display panel. The display panel includes a barrier dam formed of two adjacent grooves, and a barrier enhancing part located in the grooves. Because this block reinforcing part along keeping away from the direction width crescent of substrate base plate, should block that the reinforcing part is close to the width of substrate base plate one side the biggest promptly, so should block reinforcing part and can concentrate external stress in the one side that blocks the dam and be close to the substrate base plate, avoid leading to the problem that the crack freely extends because of external stress is dispersed everywhere. In the display panel provided by the embodiment of the disclosure, the blocking reliability of the dam and the blocking reinforcing part for the crack is high.

It should be noted that, with reference to fig. 2, in the embodiment of the present disclosure, the non-display region B1 of the substrate base board 01 may include a peripheral region and a package region extending along the direction X1 close to the display region a1 and arranged at intervals. The plurality of grooves C0 described in the embodiments of the present disclosure may be located in the peripheral region. Therefore, the problem of package failure caused by extension of cracks appearing at the edge of the display panel to the package area can be effectively avoided. Since the display area a1 is located on the side of the package area away from the peripheral area, the crack can be considered to be blocked outside the display area a1 on the premise that the crack is blocked outside the package area, so as to prevent the crack from extending to the display area a 1.

Alternatively, in the embodiment of the present disclosure, the display panel may include the same number of grooves C0 as the barrier enhancing parts 03. On this basis, one barrier reinforcement 03 may be located in one groove C0, and each barrier reinforcement 03 may be located in a different groove C0. That is, a plurality of barrier enhancing portions 03 may be respectively located in the different respective grooves C0. Alternatively, there may be a plurality of barrier-enhancing portions 03 disposed within at least one groove C0, and no barrier-enhancing portions 03 disposed within at least one groove C0.

For example, referring to fig. 3 and 4, the display panel shown includes four grooves C0 and four barrier enhancing parts 03, and the four barrier enhancing parts 03 are respectively located in the four grooves C0.

For another example, referring to fig. 5 and 6, the display panel shown includes three grooves C0 and three barrier enhancing parts 03, and the three barrier enhancing parts 03 are respectively located in the three grooves C0.

Of course, in some embodiments, the display panel may include different numbers of the grooves C0 and barrier enhancing portions 03. Alternatively, if the number of the grooves C0 is greater than the number of the barrier enhancing parts 03, each barrier enhancing part 03 may be respectively disposed in different grooves C0, and there may be a gap between two adjacent barrier enhancing parts 03, which may mean a groove C0 in which no barrier enhancing part 03 is disposed. If the number of the grooves C0 is less than the number of the barrier enhancing parts 03, there may be a plurality of barrier enhancing parts 03 provided in one groove C0. The embodiments of the present disclosure do not limit this.

Alternatively, in conjunction with fig. 3 to 6, on the premise that the display panel includes three and more barrier enhancing portions 03, one barrier enhancing portion 03 closest to the display area a1 may be referred to as a third-stage (3#) barrier enhancing portion 03, one barrier enhancing portion 03 adjacent to the third-stage (3#) barrier enhancing portion 03 may be referred to as a second-stage (2#) barrier enhancing portion 03, and the remaining barrier enhancing portions 03 except for the second-stage (2#) barrier enhancing portion 03 and the third-stage (3#) barrier enhancing portion 03 may be referred to as first-stage (1#) barrier enhancing portions 03. In this way, in the direction X1 near the display area a1, in fig. 3 and 4, the first barrier enhancing portion 03 and the second barrier enhancing portion 03 are the first-stage (1#) barrier enhancing portion 03, the third barrier enhancing portion 03 is the second-stage (2#) barrier enhancing portion 03, and the fourth barrier enhancing portion 03 is the third-stage (3#) barrier enhancing portion 03. In fig. 5 and 6, the first barrier enhancing portion 03 is the first-stage (1#) barrier enhancing portion 03. The second barrier enhancing portion 03 is a second-stage (2#) barrier enhancing portion 03, and the third barrier enhancing portion 03 is a third-stage (3#) barrier enhancing portion 03.

It can also be determined based on the above discussion that, in the embodiment of the present disclosure, the number of the first-stage (1#) barrier enhancing parts 03 may be one or more, and the number of the second-stage (2#) barrier enhancing parts 03 and the number of the third-stage (3#) barrier enhancing parts 03 may be one. Of course, in some embodiments, the number of the second-stage (2#) barrier enhancing parts 03 and the number of the third-stage (3#) barrier enhancing parts 03 may also be multiple, so as to meet the frame requirement of the display panel.

Alternatively, as can be seen in fig. 2 to 6, each of the barrier enhancing parts 03 according to the embodiments of the present disclosure may have three sides, namely, a first side L1, a second side L2, and a third side L3.

The first side L1 may be perpendicular to the substrate base plate 01, the second side L2 may be parallel to the substrate base plate 01, and the included angle between the third side L3 and the substrate base plate 01 may be an acute angle.

Alternatively, as can be seen from fig. 2 to 6, the first side L1 and the second side L1 of each barrier enhancing portion 03 may be straight lines, and the third side L3 may be straight lines as shown in fig. 2, or may be arc lines as shown in fig. 3. With the structure shown in fig. 2, it can also be said that the barrier reinforcement portion 03 has a right-angled triangle shape. In the display panel shown in fig. 4 to 6, the barrier enhancing portions 03 each have a right triangle shape. The triangle has better stability, so better blocking reliability is further ensured.

Alternatively, as can be seen in fig. 3 to 6, on the basis that one barrier enhancing portion 03 is disposed in each groove C0, the first side L1 of each barrier enhancing portion 03 may abut (i.e., be adjacent to and contact) any side wall of the groove C0 in which it is located, the second side L2 may abut the bottom of the groove C0 in which it is located, and the length of the second side L2 is equal to the length of the bottom of the groove C0. That is, each barrier enhancing portion 03 may be just caught within the groove C0. Thus, when the external stress acts on the blocking dam 04, the blocking-reinforcing part 03 may directly guide the external stress to the y direction shown in fig. 3, so as to prevent the external stress from being dispersed in the groove C0, thereby further improving the blocking reliability. Of course, in some embodiments, the barrier reinforcement 03 may not abut the sidewalls and/or bottom of the groove.

Alternatively, as can be seen from fig. 2 to 6, in the plurality of barrier enhancing portions 03 according to the embodiment of the present disclosure, the third side L3 of the barrier enhancing portion 03 farthest from the display area a1 may be close to the display area a1, and the third side L3 of the barrier enhancing portion 03 closest to the display area a1 may be far from the display area a 1. That is, in a direction approaching the display area a1, the first edge L1 of the first barrier enhancing part 03 may abut against a sidewall of the groove C0 located away from the display area a1, and the first edge L1 of the last barrier enhancing part 03 may abut against a sidewall of the groove C0 located close to the display area a 1.

For example, in the direction X1 close to the display region a1, for the structure shown in fig. 3 to 6, the third side L3 of the first barrier enhancing portion 03 is close to the display region a 1. That is, the first edge L1 of the first barrier enhancing portion 03 may abut the sidewall of the first groove C0 away from the display area a 1. For the structure shown in fig. 3 and 4, the third side L3 of the fourth barrier enhancing part 03 is far from the display area a1, i.e., the first side L1 of the fourth barrier enhancing part 03 may abut the sidewall of the fourth groove C0 near the display area a 1. For the structure shown in fig. 5 and 6, the third side L3 of the third barrier enhancing part 03 is far from the display area a1, i.e., the first side L1 of the third barrier enhancing part 03 may abut the side wall of the third groove C0 near the display area a 1. Thus, referring to fig. 3, when an external stress is applied to the groove C0 farthest from the display area a1, the barrier enhancing portion 03 positioned in the groove C0 may reliably guide the external stress to the bottom of the barrier dam 04. Then, when the external stress reaches the groove C0 closest to the display area a1, the barrier enhancing portion 03 located in the groove C0 may guide the external stress to the side wall of the barrier dam 04 again, thereby achieving reliable guidance of the external stress.

Alternatively, the third sides L3 of at least two adjacent barrier enhancing portions 03 may intersect. That is, the included angle of the third sides L3 of at least two adjacent barrier enhancing portions 03 may be an acute angle. The intersection of the third sides L3 of two adjacent barrier reinforcements 03 can also be understood as: the third sides L3 of the adjacent two barrier enhancing portions 03 are opposite, not parallel. In this way, the barrier capability can be reinforced in the opposite direction.

For example, referring to fig. 2 to 5, in the embodiment of the present disclosure, it may be that the third sides L3 of two adjacent barrier enhancing portions 03 closest to the display area a1 intersect. That is, the second-stage (2#) barrier enhancing portion 03 and the third-stage (3#) barrier enhancing portion 03 are structurally opposed to each other. In this way, when a crack or an external stress propagates to the second-stage (2#) barrier enhancing portion 03, the third-stage (3#) barrier enhancing portion 03 can simultaneously perform a reinforcing function while the second-stage (2#) barrier enhancing portion 03 cuts off the external stress, thereby further improving the barrier reliability.

For another example, referring to fig. 6, in the embodiment of the present disclosure, it may be that the third sides L3 of the two adjacent barrier enhancing portions 03 farthest from the display area a1 intersect. That is, the first-stage (2#) barrier enhancing portion 03 and the second-stage (2#) barrier enhancing portion 03 are structurally opposed to each other. In other words, the second-stage (2#) barrier enhancing portion 03 and the third-stage (3#) barrier enhancing portion 03 may have the same structure.

In the embodiment of the disclosure, by arranging the 1#, 2# and 3# barrier reinforcing parts 03 between the adjacent grooves C0 of each barrier dam and arranging the barrier reinforcing parts 03 to be triangular, the guidance of external stress and the reinforcement of barrier effect can be realized, so that the problem of product reliability caused by collision can be improved.

Optionally, the material of each barrier enhancing portion 03 recited in the embodiments of the present disclosure may include: inorganic materials or metallic materials. And the mechanical strength (i.e., hardness) of the material of the barrier enhancing portion 03 may be equal to or greater than the mechanical strength of the material of the inorganic layer 02. Thus, the external stress can be further guided and cut off.

For example, the metal material may be at least one of silver (Ag) and aluminum (Al), and the inorganic material may include at least one of silicon oxide (SiO), silicon nitride (SiN), and silicon oxynitride (SiON).

By adopting the metal material with higher density and higher mechanical strength, the edge structure can be reliably etched, the effective truncation of the external stress is ensured, and the effective guiding of the external stress is realized.

Alternatively, the barrier enhancing part 03 may be formed in the groove C0 through a single patterning process after the groove C0 is formed. The patterning process may include: gluing, exposing, developing, etching and the like.

Among them, for the barrier enhancing portion 03 made of an inorganic material, since it is necessary to distinguish the hardness from other film layers and to separately deposit an inorganic material to adjust the film layer compactness, the triangular slope (i.e., the third side L3) shown in fig. 4 to 6 can be made by increasing the exposure amount used in the patterning process. For the barrier enhancing portion 03 made of a metal material, the metal material may be formed in the groove C0 through a magnetron sputtering (sputter) process and then etched through a wet etching process. Under the influence of the process, the barrier enhancing portion 03 formed after the wet etching generally has the shape shown in fig. 3, and the third side L3 is an arc.

Alternatively, referring to fig. 6, in the direction along the direction X2 close to the substrate base plate, the height h1 of each barrier enhancing portion 03 may be greater than 10% of the height h2 of the groove C0, and may be less than 70% of the height h2 of the groove C0. Through simulation, the blocking reinforcing part 03 at the height is more beneficial to guiding and intercepting external stress.

Taking the structure shown in fig. 5 as an example, and taking the height h1 of the barrier-enhanced part 03 satisfying the above conditions as an example, fig. 7 shows a simulation diagram of a stress test. Taking the structure shown in fig. 5 and taking the example that the height h1 of the barrier-enhanced part 03 is equal to 10% of the height h2 of the groove C0, fig. 8 shows another simulation diagram of stress test. Taking the structure shown in fig. 5 and taking the example that the height h1 of the barrier-enhanced part 03 is equal to 70% of the height h2 of the groove C0, fig. 9 shows a simulation diagram of another stress test. Taking the structure shown in fig. 6 and taking the example that the height h1 of the barrier-enhanced part 03 is equal to 10% of the height h2 of the groove C0, fig. 10 shows a simulation diagram of another stress test. In fig. 7 to 10, with reference to the barrier-enhanced portion 03, the abscissa indicates the width of the barrier-enhanced portion 03 in the direction approaching the display area a1, the ordinate indicates the height of the barrier-enhanced portion 03 in the direction away from the substrate base plate 01, and the unit is meters (m), and the unit of the surface stress is newtons per square meter (N/m)²). The darker regions of color are external stress concentration regions, whereas the lighter regions of color are external stress dispersion regions.

As can be seen by comparing fig. 7 to 10, the barrier-reinforcing part 03 having a height h1 greater than 10% of the height h2 of the groove C0 and less than 70% of the height h2 of the groove C0 has the best effect of guiding the stress. The barrier-reinforcement 03, having a height h1 equal to 10% of the height h2 of the groove C0, although being able to guide the stresses well, a too low structure would rather promote the propagation of cracks. The barrier reinforcing part 03 having a height h1 equal to 70% of the height h2 of the groove C0 has a poor effect of cutting off the external stress, and the external stress is locally concentrated and cannot be effectively transferred, so that the crack in the local area is increased, and the crack rapidly propagates from the local area.

Optionally, as can also be seen with reference to fig. 3 to 6, the display panel according to the embodiment of the present disclosure may further include: a first Gate Insulator (GI) 05 and a second gate insulator 06 between the substrate base 01 and the inorganic layer 03.

Alternatively, in the embodiment of the present disclosure, a substrate 01 may be provided, and then the first gate insulating layer 05, the second gate insulating layer 06, and the inorganic layer 02 may be sequentially formed on the substrate 01. Finally, portions of the inorganic layer 02 located at the edge non-display regions B1 may be etched, thereby obtaining the plurality of grooves C0.

Alternatively, the etching depth of the inorganic layer 02 may be smaller than, equal to, or larger than the thickness of the inorganic layer 02. For example, referring to fig. 2 to 6, it can be seen that the depth of each of the grooves C0 in the display panel is smaller than the thickness of the inorganic layer 02, in other words, the etching depth of the inorganic layer 02 is smaller than the thickness of the inorganic layer 02 when the display panel shown in fig. 2 to 6 is formed. Further, for the case where the etching depth of the inorganic layer 02 is greater than the thickness of the inorganic layer 02, it is considered that the groove C0 also penetrates at least part of the gate insulating layer (including the first gate insulating layer 05 and the second gate insulating layer 06).

Optionally, in the embodiment of the present disclosure, the inorganic layer 02 may also be referred to as an interlayer dielectric (ILD). The base substrate 01 may be made of a flexible material. The flexible material can be a Polyimide (PI) material with better performances of high temperature resistance, low temperature resistance, oxidation resistance and the like.

As can be seen from the foregoing embodiments, in the display panel provided in the embodiments of the present disclosure, the barrier enhancing portion 03 and the barrier dam 03 can cooperate with each other, so as to effectively guide the external stress, and effectively prevent the crack from extending to one side of the substrate 01. The display panel has good product reliability.

In summary, the embodiments of the present disclosure provide a display panel. The display panel includes a barrier dam formed of two adjacent grooves, and a barrier enhancing part located in the grooves. Because this block reinforcing part along keeping away from the direction width crescent of substrate base plate, should block that the reinforcing part is close to the width of substrate base plate one side the biggest promptly, so should block reinforcing part and can concentrate external stress in the one side that blocks the dam and be close to the substrate base plate, avoid leading to the problem that the crack freely extends because of external stress is dispersed everywhere. In the display panel provided by the embodiment of the disclosure, the blocking reliability of the dam and the blocking reinforcing part for the crack is high.

Fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present disclosure. As shown in fig. 11, the display device may include: a power supply assembly J1, and a display panel 00 as shown in any one of fig. 1 to 6.

The power supply assembly J1 can be electrically connected to the display panel 00, and the power supply assembly J1 can be used for supplying power to the display panel 00.

Optionally, the display device may be: the display device comprises any product or component with a display function, such as a liquid crystal panel, electronic paper, a flexible OLED display device, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.