CN110928060B

CN110928060B - Display panel and display device

Info

Publication number: CN110928060B
Application number: CN201911096927.9A
Authority: CN
Inventors: 林春荣; 陈国照
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2022-05-03
Anticipated expiration: 2039-11-11
Also published as: CN110928060A

Abstract

The invention discloses a display panel and a display device, and relates to the technical field of display, wherein a non-display area comprises a binding area, a first frame area arranged opposite to the binding area and a second frame area arranged adjacent to the binding area; the display panel comprises a first substrate and a second substrate which are oppositely arranged; the first substrate comprises a substrate base plate, and a first metal layer, a second metal layer, a planarization layer, a third metal layer, a passivation layer and an alignment layer which are sequentially arranged on the substrate base plate along a direction vertical to the substrate base plate; the first substrate further comprises at least one strip-shaped barrier structure positioned on the third metal layer, and at least part of the strip-shaped barrier structure is grounded; the strip-shaped blocking structure is positioned in the second frame area, and in the second frame area, an included angle alpha between the extending direction of the frame glue and the extending direction of the strip-shaped blocking structure is within a preset range. So, can disperse the stress in second frame district, prevent that the rete from splitting, be favorable to preventing again that steam from the second frame district gets into inside the display panel, promote the demonstration reliability.

Description

Display panel and display device

Technical Field

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

Background

With the development of science and technology, the manufacture of display panels is mature, and more display panels are widely applied to the daily life and work of people, so that great convenience is brought to the daily life and work of people. Conventional Display panels mainly include Liquid Crystal Display (LCD), Organic Light Emitting Display (OLED), plasma Display panel, and the like.

In order to increase the aesthetic feeling of the display screen and the appearance of the display device, increasing the display size and resolution, and reducing the bezel width and the body thickness have become one of the main research and development directions of those skilled in the relevant field.

Taking a liquid crystal display device as an example, the liquid crystal display device generally includes an array substrate and a color film substrate which are oppositely arranged, and in a frame area of the liquid crystal display device, frame glue is generally used to realize adhesion and fixation between the array substrate and the color film substrate. Along with the reduction of the width of the frame, the contact area between the frame glue and the array substrate and the color film substrate is smaller and smaller, and at the moment, the stress between the frame glue and the film layer on one side of the array substrate is larger and larger, so that the stress of the frame area is more and more concentrated, and the phenomenon of film layer fracture in the array substrate is easily caused; when the film layer is broken, external water vapor easily enters the display device from the broken position, so that normal display of the display device is influenced.

Disclosure of Invention

In view of this, the invention provides a display panel and a display device, and a strip-shaped blocking structure is introduced into the second frame region, so that the stress of the second frame region can be dispersed, the film layer can be prevented from being broken, water vapor can be prevented from entering the display panel from the second frame region, and the display reliability can be improved.

In a first aspect, the present application provides a display panel, including a display area and a non-display area surrounding the display area, where the non-display area includes a binding area, a first frame area disposed opposite to the binding area, and a second frame area disposed adjacent to the binding area;

the display panel comprises a first substrate and a second substrate which are oppositely arranged, and the first substrate and the second substrate are attached to each other through frame glue in the non-display area;

the first substrate comprises a substrate base plate, and a first metal layer, a second metal layer, a planarization layer, a third metal layer, a passivation layer and an alignment layer which are arranged on the substrate base plate along a direction vertical to the substrate base plate; the first metal layer is positioned between the second metal layer and the substrate base plate, the planarization layer is positioned on one side of the second metal layer, which is far away from the substrate base plate, the third metal layer is positioned on one side of the planarization layer, which is far away from the second metal layer, the passivation layer is positioned on one side of the third metal layer, which is far away from the substrate base plate, and the alignment layer is positioned on one side of the passivation layer, which is far away from the planarization layer;

the first substrate further comprises at least one strip-shaped barrier structure positioned on the third metal layer, and at least part of the strip-shaped barrier structure is grounded; the strip-shaped blocking structure is located in the second frame area, and an included angle alpha between the extending direction of the frame glue and the extending direction of the strip-shaped blocking structure is within a preset range in the second frame area.

In a second aspect, the present application further provides a display device including the display panel provided by the present application.

Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:

in the display panel and the display device provided by the application, the first substrate and the second substrate are attached through the frame glue located in the non-display area, wherein the first substrate comprises a substrate base plate, and a first metal layer, a second metal layer, a planarization layer, a third metal layer, a passivation layer and an alignment layer which are arranged on the substrate base plate along a direction perpendicular to the substrate base plate, and the first metal layer and the second metal layer are isolated by an insulating layer. Particularly, at least one strip-shaped barrier structure is introduced into the second frame region corresponding to the first substrate, and the strip-shaped barrier structure is located on the third metal layer. After the strip-shaped blocking structure is introduced into the third metal layer of the second frame area, even if the width of the second frame area is narrowed, the contact area between the frame adhesive and the first substrate is reduced, the introduced strip-shaped blocking structure can also play a certain dispersing role on the stress of the second frame area, for example, the phenomenon that the passivation layer is fractured due to the fact that the stress is concentrated on the passivation layer of the frame area can be avoided, so that the possibility that external water vapor enters the display panel from the fractured passivation layer is favorably avoided, the sealing reliability of the display panel is favorably improved, and the display reliability of the display panel and the display device is favorably improved. In addition, the alignment layer is usually formed by liquid alignment liquid, the alignment liquid has certain fluidity, after the strip-shaped barrier structure is introduced into the second frame area, the strip-shaped barrier structure can block the diffusion of the alignment liquid to a certain extent, so that the possibility of the diffusion of the alignment liquid to the edge of the display panel is reduced, the alignment layer is isolated from external water vapor, and the water vapor is prevented from entering the display panel from the alignment layer to influence the normal display of the display panel, therefore, the reliability of the display panel and the display device is favorably improved.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a top view of a display panel according to an embodiment of the present disclosure;

FIG. 2 is an AA' cross-sectional view of the display panel provided in the embodiment of FIG. 1;

FIG. 3 is a partial enlarged view of a second frame region and a portion of a display region of a display panel according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a substrate BB' of the display panel shown in FIG. 3;

FIG. 5 is a partial enlarged view of a second bezel region and a portion of a display region of a display panel according to an embodiment of the present application;

FIG. 6 is a partial enlarged view of a second frame region of a display panel according to an embodiment of the present disclosure;

FIG. 7 is a partial enlarged view of a second frame region of a display panel according to an embodiment of the present disclosure;

FIG. 8 is a partial enlarged view of a second frame region of a display panel according to an embodiment of the present disclosure;

FIG. 9 is a partial enlarged view of a second frame region of a display panel according to an embodiment of the present disclosure;

fig. 10 is a schematic connection diagram of a gate driving circuit in a display panel according to an embodiment of the present disclosure;

FIG. 11 is a partial enlarged view of a second bezel region of the display panel of the embodiment of FIG. 10,

FIG. 12 is a cross-sectional view of a first substrate of the display panel shown in FIG. 11, showing a cross-sectional view CC;

fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the prior art, in a frame region of a liquid crystal display device, a frame adhesive is generally used to adhere and fix an array substrate and a color film substrate. Along with the reduction of the width of the frame, the contact area between the frame glue and the array substrate and the color film substrate is smaller and smaller, and at the moment, the stress between the frame glue and the film layer on one side of the array substrate is larger and larger, so that the stress of the frame area is more and more concentrated, and the phenomenon of film layer fracture in the array substrate is easily caused; when the film layer is broken, external water vapor easily enters the display device from the broken position, so that the display device has abnormal display.

In view of this, the invention provides a display panel and a display device, where a strip-shaped blocking structure is introduced in the second frame region, so that not only can the stress of the second frame region be dispersed and the film layer be prevented from being broken, but also water vapor can be prevented from entering the display panel from the second frame region, and the display reliability is improved.

The following detailed description is to be read in connection with the drawings and the detailed description.

Fig. 1 is a top view of a display panel provided in an embodiment of the present application, fig. 2 is an AA 'cross-sectional view of the display panel provided in the embodiment of the present application, fig. 3 is a partial enlarged view of a second frame region and a part of the display region of the display panel provided in the embodiment of the present application, fig. 4 is a BB' cross-sectional view of a first substrate of the display panel provided in the embodiment of fig. 3, please refer to fig. 1, the present application provides a display panel 100 including a display region 10 and a non-display region 20 surrounding the display region 10, the non-display region 20 including a bonding region 23, a first frame region 21 disposed opposite to the bonding region 23, and a second frame region 22 disposed adjacent to the bonding region 23;

referring to fig. 2, the display panel 100 includes a first substrate 30 and a second substrate 40 disposed opposite to each other, and the first substrate 30 and the second substrate 40 are bonded to each other by a sealant 50 in the non-display region 20;

referring to fig. 4, the first substrate 30 includes a substrate base 39, and a first metal layer 31, a second metal layer 32, a planarization layer 34, a third metal layer 33, a passivation layer 35, and an alignment layer 36 disposed on the substrate base 39 in a direction perpendicular to the substrate base 39; the first metal layer 31 is positioned between the second metal layer 32 and the substrate base plate 39, and the first metal layer 31 and the second metal layer 32 are isolated by insulation; the planarization layer 34 is positioned on the side of the second metal layer 32 away from the substrate base plate 39, the third metal layer 33 is positioned on the side of the planarization layer 34 away from the second metal layer 32, the passivation layer 35 is positioned on the side of the third metal layer 33 away from the substrate base plate 39, and the alignment layer 36 is positioned on the side of the passivation layer 35 away from the planarization layer 34;

referring to fig. 3, the first substrate 30 further includes at least one bar-shaped barrier structure 60 located on the third metal layer 33, and at least a portion of the bar-shaped barrier structure 60 is grounded; the strip-shaped blocking structure 60 is located in the second frame region 22, and in the second frame region 22, an included angle α between the extending direction of the sealant 50 and the extending direction of the strip-shaped blocking structure 60 is within a preset range.

It should be noted that the embodiment shown in fig. 1 only schematically shows a relative position relationship diagram of the display area 10, the non-display area 20 and the binding area 23, and does not represent actual dimensions. Fig. 2 only shows a relative position relationship diagram of the first substrate 30, the second substrate 40 and the sealant 50, and does not represent actual dimensions. Fig. 3 shows only one schematic view of introducing 3 bar-shaped barrier structures 60 into the second frame region 22, and in some other embodiments of the present application, the number of the bar-shaped barrier structures 60 provided in the second frame region 22 may be other, and the present application is not limited to this. In addition, other circuit traces may be disposed in the second frame region 22, and in order to more clearly embody the present application, fig. 3 only shows the bar-shaped blocking structure 60 included in the second frame region 22, and does not show other traces. Fig. 4 shows relative positional relationships of the first metal layer 31, the second metal layer 32, the planarization layer 34, the third metal layer 33, the passivation layer 35, the alignment layer 36, and the stripe-shaped barrier structures 60, and does not represent actual dimensions.

Specifically, with continued reference to fig. 1 to fig. 4, in the display panel 100 provided in the present application, the first substrate 30 and the second substrate 40 are attached by the sealant 50 located in the non-display area 20, and optionally, the first substrate 30 is an array substrate, and the second substrate 40 is a color film substrate. The first substrate 30 includes a substrate base 39, and a first metal layer 31, a second metal layer 32, a planarization layer 34, a third metal layer 33, a passivation layer 35, and an alignment layer 36 sequentially disposed on the substrate base 39 in a direction perpendicular to the substrate base 39, wherein the first metal layer 31 and the second metal layer 32 are separated by an insulating layer. In particular, at least one stripe-shaped barrier structure 60 is introduced into the second frame region 22 corresponding to the first substrate 30, and the stripe-shaped barrier structure 60 is located on the third metal layer 33. After the strip-shaped blocking structure 60 is introduced into the third metal layer 33 of the second frame region 22, even if the width of the second frame region 22 is narrowed, the contact area between the sealant 50 and the first substrate 30 is reduced, the introduced strip-shaped blocking structure 60 can also perform a certain dispersion function on the stress of the second frame region, for example, the phenomenon that the passivation layer 35 is fractured due to the stress concentration on the passivation layer 35 of the frame region can be avoided, so that the possibility that external water vapor enters the display panel 100 from the fractured passivation layer 35 is favorably avoided, and therefore, the sealing reliability of the display panel 100 is favorably improved while a narrow frame is realized, and the display reliability of the display panel 100 is favorably improved. In addition, the alignment layer 36 is usually formed by a liquid alignment liquid, and the alignment liquid has a certain fluidity during the process of forming the alignment layer 36, and after the strip-shaped blocking structure 60 is introduced into the second frame region 22, the strip-shaped blocking structure 60 can block the diffusion of the alignment liquid to a certain extent, so as to reduce the possibility that the alignment liquid diffuses toward the edge of the display panel 100, further isolate the alignment layer 36 from the external water vapor, and prevent the water vapor from entering the display panel 100 from the alignment layer 36 to affect the normal display of the display panel 100, thereby being beneficial to further improving the display reliability of the display panel 100.

Further, at least a portion of the bar-shaped blocking structures 60 in the present application is grounded, so that even when static electricity enters the second frame region 22 in the display panel 100, the grounded bar-shaped blocking structures 60 can also conduct the static electricity to the outside of the display panel 100, and prevent the static electricity from conducting to the circuit structure inside the display panel 100, thereby being beneficial to improving the anti-static performance of the display panel 100.

Alternatively, with continued reference to fig. 4, in a direction perpendicular to the substrate base plate 39, the thickness of the stripe-shaped barrier structure 60 is greater than the thickness of the passivation layer 35, and the thickness of the alignment layer 36 is less than the difference between the thicknesses of the stripe-shaped barrier structure 60 and the passivation layer 35.

Specifically, when the thickness of the stripe-shaped barrier structure 60 in the direction perpendicular to the substrate base 39 is set to be greater than the thickness of the passivation layer 35, a certain step difference is formed between the surface of the stripe-shaped barrier structure 60 away from the substrate base 39 and the surface of the passivation layer 35 in direct contact with the planarization layer 34 away from the substrate base 39, and the stripe-shaped barrier structure 60 and the passivation layer 35 on the surface thereof away from the substrate base 39 together form a protrusion structure, and since the thickness of the alignment layer 36 is smaller than the difference between the thicknesses of the stripe-shaped barrier structure 60 and the passivation layer 35, the surface of the protrusion structure away from the substrate base 39 is inevitably higher than the surface of the alignment layer 36 away from the substrate base 39, so that, during the formation of the alignment layer 36 in the display region 10, even when a part of the alignment liquid diffuses to the second frame region 22, the protrusion structure of the second frame region 22 can perform a good blocking effect on the alignment liquid, further diffusion of the alignment liquid to the edge of the display panel 100 is effectively avoided, so that the alignment layer 36 is more favorably ensured to be isolated from external water vapor, and the water vapor is prevented from entering the display panel 100 from the alignment layer 36 to affect normal display of the display panel 100, and therefore, the display reliability of the display panel 100 is more favorably improved.

Optionally, with reference to fig. 3, an included angle between the extending direction of the sealant 50 and the extending direction of the strip-shaped blocking structure 60 is 0 ° or more and 5 ° or less.

In the embodiment shown in fig. 3, the direction indicated by the dotted arrow represents the extending direction of the sealant 50, the strip-shaped blocking structure 60 is parallel to the extending direction of the sealant 50 or forms a small included angle, where the small included angle is less than or equal to 5 °, so that the blocking effect of the strip-shaped blocking structure 60 on the alignment liquid can be prevented from being weakened when the included angle is too large, thereby ensuring that the strip-shaped blocking structure 60 can reliably block the diffusion of the alignment liquid, further facilitating the improvement of the sealing performance of the second frame region 22, and further facilitating the improvement of the display reliability of the display panel 100.

Alternatively, fig. 5 is another partial enlarged view of the second frame region 22 and a part of the display region 10 in the display panel 100 provided in the embodiment of the present application, where α is 0. At this time, the extending direction of the strip-shaped blocking structure 60 is parallel to the extending direction of the sealant 50, and when the extending direction of the strip-shaped blocking structure 60 is set to be parallel to the extending direction of the sealant 50, the extending direction of the strip-shaped blocking structure 60 can be perpendicular to the diffusion direction of the alignment liquid spreading from the display region 10 to the non-display region 20, so that further diffusion of the alignment liquid can be better blocked, which is more favorable for ensuring that the alignment layer does not contact with external water vapor, thereby improving the sealing performance of the second frame region 22, and avoiding the influence of the external water vapor on the normal display of the display panel 100.

Optionally, with continued reference to fig. 3 and fig. 5, the first substrate 30 includes a plurality of strip-shaped blocking structures 60, and the arrangement direction of each strip-shaped blocking structure 60 is crossed with the extending direction of the strip-shaped blocking structure 60.

In particular, fig. 3 and 5 show a solution in which a plurality of strip-shaped barrier structures 60 are arranged in the second frame area 22. When the plurality of bar-shaped blocking structures 60 are disposed in the second frame region 22, the plurality of bar-shaped blocking structures 60 perform multiple blocking effects on the alignment liquid, so that the blocking effects of the bar-shaped blocking structures 60 on the alignment liquid are more reliable, a path through which the alignment film extends toward the edge of the display panel 100 is blocked, and a path through which external water vapor extends to the inside of the display panel 100 through the alignment layer 36 is blocked, thereby being more beneficial to improving the sealing performance and the display reliability of the display panel 100. In addition, when the second frame region 22 is provided with the plurality of bar-shaped blocking structures 60, when the second frame region 22 is narrowed, the plurality of bar-shaped blocking structures 60 can disperse the stress, so as to avoid the phenomenon that the second frame region 22 is concentrated to cause the film layer to break.

Alternatively, as shown in fig. 6, which is a partial enlarged view of the second frame region 22 in the display panel 100 provided in the embodiment of the present application, the bar-shaped blocking structures 60 include floating blocking structures 61, the floating blocking structures 61 are in a floating state, and the floating blocking structures 61 respectively include a plurality of sub-blocking structures 65; in the same floating barrier structure 61, the sub-barrier structures 65 are arranged along a first direction, the first direction is the same as the extending direction of the floating barrier structure 61, and a first interval 66 is included between two adjacent sub-stripe structures.

In particular, with continued reference to fig. 6, the stripe-shaped blocking structure 60 in the present application includes a floating blocking structure 61, floating refers to that no electrical signal is connected on the blocking structure, the floating blocking structure 61 includes a plurality of sub-blocking structures 65, and a first space 66 is included between any two adjacent sub-blocking structures 65, that is, any two adjacent sub-blocking structures 65 are not connected to each other and are insulated from each other. Since the floating barrier structure 61 is not connected to an electric signal, when there is an influence of static electricity, the static electricity is likely to act on the floating barrier structure 61. This application sets up floating blocking structure 61 to when a plurality of sub-blocking structures 65 of insulating each other, can effectively avoid static to use the static gathering phenomenon that causes when a whole rectangular blocking structure, even a plurality of sub-blocking structures 65 that length is short are when receiving static, the gathering can not take place yet to static, thereby be favorable to avoiding the strong static of gathering to cause the influence to the circuit structure in display panel 100, consequently, it still is favorable to promoting display panel 100's antistatic performance to set up floating blocking structure 61 to the form that a plurality of sub-blocking structures 65. In addition, when the floating barrier structure 61 includes a plurality of sub-barrier structures 65, the plurality of sub-barrier structures 65 can release the stress of the second frame region 22, thereby effectively avoiding the possibility of film layer fracture caused by stress concentration in the second frame region 22. In the present application, the lengths of the sub-blocking structures 65 in the floating blocking structure 61 may be the same or different, and if the same second frame region 22 includes a plurality of floating blocking structures 61, the orthographic projections of the corresponding first spaces 66 in the plurality of floating blocking structures 61 toward the display region 10 are not overlapped, which is beneficial to further blocking the alignment liquid while avoiding the stress concentration of the second frame region 22.

Alternatively, as shown in fig. 7, which is another partial enlarged view of the second frame region 22 in the display panel 100 provided in the embodiment of the present application, the stripe-shaped blocking structure 60 includes a ground blocking structure 62, the ground blocking structure 62 is grounded, and the ground blocking structure 62 extends in the same direction as the whole.

In particular, fig. 7 shows a scheme in which the stripe-shaped barrier structures 60 of the second frame region 22 are all provided as ground barrier structures 62. The ground blocking structure 62 is embodied as a whole strip-shaped structure, and extends along the same direction as a whole, since the ground blocking structure 62 is grounded, even if there is an influence of static electricity, the static electricity is conducted out through the ground blocking structure 62, and the circuit structure inside the display panel 100 is not affected. Moreover, set up ground blocking structure 62 to holistic long structure, many ground blocking structure 62 combined action can effectively block the route that spreads to the marginal area of display panel 100 to the alignment liquid, has also blocked external steam simultaneously and has got into the inside route of display panel 100 from alignment layer 36, avoids external steam to cause the influence to display panel 100's normal demonstration to be favorable to promoting display panel 100's demonstration reliability more.

It should be noted that, referring to fig. 6, when the floating barrier structure 61 is disposed in the second frame region 22, at least one ground barrier structure 62 is preferably further included, because the sub-barrier structures 65 in the floating barrier structure 61 include the first space 66 therebetween, the elongated ground barrier structure 62 can be introduced to cooperate with the floating barrier structure 61, and the first space 66 in the floating barrier structure 61 is prevented from forming a path for spreading alignment liquid to the edge of the display panel 100, so that the stress of the second frame region 22 is released to avoid stress concentration, and meanwhile, the sealing performance of the second frame region 22 is further improved, and the display reliability of the display panel 100 is improved.

Alternatively, fig. 8 is another partial enlarged view of the second frame region 22 in the display panel 100 provided in the embodiment of the present application, and fig. 9 is another partial enlarged view of the second frame region 22 in the display panel 100 provided in the embodiment of the present application, where the stripe-shaped barrier structure 60 includes a ground barrier structure 62, and the ground barrier structure 62 is grounded; the ground blocking structure 62 includes a first ground blocking structure 67 and a second ground blocking structure 68 connected to each other, the extending directions of the first ground blocking structure 67 and the second ground blocking structure 68 intersect, and the opening of the included angle therebetween faces the display region 10, and the extending directions of the first ground blocking structure 67 and the second ground blocking structure 68 both intersect with the arrangement direction of the ground blocking structures 62.

Specifically, fig. 8 shows one embodiment when the stripe-shaped barrier structures 60 in the second frame area 22 are in a broken line shape, and fig. 9 shows another embodiment when the stripe-shaped barrier structures 60 in the second frame area 22 are in a broken line shape. Fig. 8 and 9 show a case where the frame region includes a plurality of stripe-shaped blocking structures 60, where the extending directions of the first ground blocking structure 67 and the second ground blocking structure 68 in the stripe-shaped blocking structures 60 cross the arrangement direction.

In the embodiment shown in fig. 8, the extending directions of the first ground blocking structure 67 and the second ground blocking structure 68 included in the stripe-shaped blocking structure 60 are different from the extending direction of the sealant 50 in the second frame region 22, and both the extending directions of the first ground blocking structure and the second ground blocking structure are small included angles, one included angle is θ 1, and the other included angle is θ 2, for example, both included angles are smaller than or equal to 5 °, and the opening of the included angle between the two is toward the display region 10. In this way, in the process of forming the alignment layer 36, the folded-line-shaped bar-shaped barrier structure 60 can block the alignment liquid on the side of the bar-shaped barrier structure 60 facing the display area 10, and also can effectively prevent the alignment liquid from spreading to the edge of the display panel 100 to cause the external water vapor to enter the display panel 100 from the alignment layer.

In the embodiment shown in fig. 9, the extending direction of the first ground blocking structure 67 included in the stripe-shaped blocking structure 60 is the same as the extending direction of the sealant 50 in the second frame region 22, the extending direction of the second ground blocking structure 68 forms a small included angle β with the first ground blocking structure 67, for example, less than or equal to 5 °, and the opening of the included angle between the first ground blocking structure 67 and the second ground blocking structure 68 faces the display region 10. Thus, in the process of forming the alignment layer 36, the folded-line-shaped bar-shaped barrier structure 60 can block the alignment liquid on the side of the bar-shaped barrier structure 60 facing the display area 10, and can also effectively prevent the alignment liquid from spreading to the edge of the display panel 100, which is also beneficial to preventing the external water vapor from entering the display panel 100 from the alignment layer.

Optionally, with continued reference to fig. 8 and 9, the display area 10 includes a first edge 11 adjacent to the second border area 22; the orthographic projection of the ground blocking structure 62 towards the first edge 11 covers the first edge 11. In this way, in the process of forming the alignment layer 36, even if a portion of the alignment liquid spreads from the first edge 11 to the second frame region 22, the bar-shaped blocking structure 60 located in the second frame region 22 can block the alignment liquid spreading from any portion of the first edge 11, and completely block the path of the alignment liquid spreading to the edge of the display panel 100, thereby being beneficial to further improving the sealing performance of the display panel 100 and improving the display reliability of the display panel 100.

Alternatively, fig. 10 is a schematic connection diagram of a gate driving circuit in the display panel 100 according to an embodiment of the present disclosure, fig. 11 is a partial enlarged view of the second frame region 22 in the display panel 100 according to the embodiment of fig. 10, fig. 12 is a cross-sectional view CC' of the first substrate 30 in the display panel 100 according to the embodiment of fig. 11, please refer to fig. 10-12, in which the first substrate 30 further includes a gate driving circuit 80, and the gate driving circuit 80 is located in the second frame region 22; the gate driving circuit 80 includes a plurality of signal lines, which are distributed in the first metal layer 31, the second metal layer 32, and the third metal layer 33;

the signal lines in the third metal layer 33 are the first signal lines 81, the extending direction of the first signal lines 81 is the same as the extending direction of the sealant 50 in the second frame region 22, and fig. 11 shows a situation where two first signal lines 81 are disposed in the third metal layer.

Specifically, referring to fig. 10-12, the display area 10 of the display panel 100 generally includes a plurality of pixel rows, and the present application introduces a gate driving circuit 80 in the second frame area 22 for sending gate driving signals to the sub-pixels in each pixel row. The gate driving circuit 80 includes a plurality of signal lines, and when the signal lines included in the gate driving circuit 80 are distributed on the first metal layer 31, the second metal layer 32, and the third metal layer 33, compared with a scheme of only setting the signal lines on one or two metal layers, the method is favorable for saving the space occupied by the signal lines in the second frame region 22 along the width direction of the second frame region 22, and therefore, the narrow frame design of the display panel 100 is favorable for being realized.

Alternatively, with continued reference to fig. 12, the thickness of the first signal line 81 is the same as the thickness of the stripe-shaped barrier structure 60 in the direction perpendicular to the substrate base plate 39; in the second direction, the width of the first signal line 81 is the same as the width of the stripe-shaped barrier structure 60.

Specifically, the embodiment shown in fig. 11 and 12 shows an embodiment in which the second frame region 22 is provided with both the stripe-shaped barrier structure 60 and the first signal line 81. The signal line in the gate driving circuit 80 further includes a first signal line 81 located on the third metal layer 33, the first signal line 81 and the stripe-shaped barrier structure 60 in this application are both located on the third metal layer 33, when the thicknesses of the first signal line 81 and the stripe-shaped barrier structure 60 in the direction perpendicular to the substrate base plate 39 are set to be the same, and the widths of the first signal line 81 and the stripe-shaped barrier structure 60 in the second direction are set to be the same, the two can be manufactured in the same specification and size in the same production process, and it is not necessary to introduce separate manufacturing processes for the first signal line 81 and the stripe-shaped barrier structure 60, which is beneficial to saving the production process and improving the production efficiency.

Optionally, with continued reference to fig. 12, in the display panel 100 provided in the embodiment of the present application, the thickness of the stripe-shaped barrier structure 60 along the direction perpendicular to the substrate base plate 39 is H1, where H1 is 0.45 μm ≦ 0.9 μm.

Specifically, if the thickness H1 of the stripe-shaped barrier structure 60 is set to be less than 0.45 μm, the barrier effect on the alignment liquid may be insignificant, and the thickness of the stripe-shaped barrier structure 60 along the direction perpendicular to the substrate 39 is set to be greater than or equal to 0.45 μm in the present application, the alignment liquid can be effectively blocked from diffusing to the edge of the display panel 100 in the process of forming the alignment layer 36, so that external moisture is effectively prevented from diffusing from the alignment layer 36 to the inside of the display panel 100, and thus, the display reliability of the display panel 100 is improved. In addition, when the thickness of the stripe-shaped barrier structures 60 is set to be greater than 0.9 μm, when the width of the second frame region 22 is narrowed, the stress applied to the stripe-shaped barrier structures 60 having an excessively large thickness will be too large, and thus a phenomenon of cracking may occur; when the thickness of the strip-shaped blocking structure 60 is set to be less than or equal to 0.9 μm, the stress of the second frame area 22 can be well dispersed when the second frame area 22 is narrowed, the phenomenon of stress concentration in the second frame area 22 is avoided, and the second frame area is not easy to break, so that external moisture can be effectively prevented from entering the display panel 100, and the sealing performance and the display reliability of the display panel 100 can be improved. Optionally, the thickness of the strip-shaped blocking structure 60 in the present application may be set to be 0.45 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, and the like, which may have a better blocking effect on the alignment liquid and also avoid the occurrence of film layer fracture.

Optionally, in the display panel 100 provided in the embodiment of the present application, along the second direction, the width of the bar-shaped barrier structure 60 is D1, where D1 ≧ 10 μm. Specifically, when the width of the stripe-shaped blocking structure 60 along the second direction is set to be less than 10 μm, the width is small, and the phenomenon of film layer fracture is likely to occur when the stripe-shaped blocking structure 60 is stressed, and when the width of the stripe-shaped blocking structure 60 along the second direction is set to be greater than or equal to 10 μm, the phenomenon of fracture of the stripe-shaped blocking structure 60 due to too small width can be effectively avoided. Alternatively, the width of the stripe-shaped barrier structures 60 in the present application may be set to 10 μm, 11 μm, 12 μm, and the like, and in practical applications, the width of the stripe-shaped barrier structures 60 may be reasonably set according to the width of the second frame region 22 and the number of the stripe-shaped barrier structures 60.

Alternatively, with continued reference to fig. 12, in the second frame region 22, the stripe-shaped barrier structures 60 and the first signal lines 81 are uniformly arranged. Specifically, when the bar-shaped blocking structures 60 and the first signal lines 81 are uniformly arranged in the second frame region 22, even if the width of the second frame region 22 is narrowed, the bar-shaped blocking structures 60 and the first signal lines 81 which are uniformly arranged can uniformly disperse the stress of the second frame region 22, thereby effectively avoiding the phenomenon of stress concentration, and further avoiding the phenomenon of film layer fracture caused by stress concentration, and therefore being more beneficial to improving the sealing performance and the display reliability of the display panel 100.

Optionally, with continued reference to fig. 12, the first signal lines 81 and the stripe-shaped barrier structures 60 disposed in the second frame region 22 are uniformly arranged, and specifically, the distance between any two adjacent first signal lines 81 is D2, the distance between any two adjacent stripe-shaped barrier structures 60 is D3, and the distance between any two adjacent first signal lines 81 and the stripe-shaped barrier structures 60 is D4, where D2 is D3 is D4 ≧ 5 μm. Moreover, when the distances D2, D3, and D4 are all set to be greater than or equal to 5 μm, a short circuit between adjacent traces can be effectively avoided, for example, a short circuit between the adjacent first signal line 81 and the strip-shaped blocking structure 60 is avoided, which affects the normal driving of the gate driving circuit on the sub-pixels on the display panel 100. Moreover, the first signal lines 81 and the strip-shaped blocking structures 60 in the second frame region 22 are arranged at uniform intervals, and different interval parameters do not need to be set for different regions, so that the wiring process of the display panel 100 is simplified, and the production efficiency of the display panel 100 is improved.

Based on the same inventive concept, the present application further provides a display device, please refer to fig. 13, and fig. 13 is a schematic structural diagram of the display device according to the embodiment of the present application, where the display device includes the display panel 100 according to the embodiment of the present application. For an embodiment of the display device provided in the embodiment of the present application, reference may be made to the embodiment of the display panel 100, and repeated descriptions are omitted. The display device provided by the application can be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and the like.

It should be noted that the display device provided in the present application can be embodied as the product or component with the display function, and can also be applied to the field of vehicle-mounted display, for example, can be used as a vehicle-mounted navigator or other vehicle-mounted display screen.

In summary, the display panel and the display device provided by the invention at least achieve the following beneficial effects:

in the display panel and the display device provided by the application, the first substrate and the second substrate are attached through the frame glue located in the non-display area, wherein the first substrate comprises a substrate and a first metal layer, a second metal layer, a planarization layer, a third metal layer, a passivation layer and an alignment layer which are sequentially arranged on the substrate along the direction perpendicular to the substrate, and the first metal layer and the second metal layer are isolated by an insulating layer. Particularly, at least one strip-shaped barrier structure is introduced into the second frame region corresponding to the first substrate, and the strip-shaped barrier structure is located on the third metal layer. After the strip-shaped blocking structure is introduced into the third metal layer of the second frame area, even if the width of the second frame area is narrowed, the contact area between the frame adhesive and the first substrate is reduced, the introduced strip-shaped blocking structure can also play a certain dispersing role on the stress of the second frame area, for example, the phenomenon that the passivation layer is fractured due to the fact that the stress is concentrated on the passivation layer of the frame area can be avoided, so that the possibility that external water vapor enters the display panel from the fractured passivation layer is favorably avoided, the sealing reliability of the display panel is favorably improved, and the display reliability of the display panel and the display device is favorably improved. In addition, the alignment layer is usually formed by liquid alignment liquid, the alignment liquid has certain fluidity, after the strip-shaped barrier structure is introduced into the second frame area, the strip-shaped barrier structure can block the diffusion of the alignment liquid to a certain extent, so that the possibility of the diffusion of the alignment liquid to the edge of the display panel is reduced, the alignment layer is isolated from external water vapor, and the water vapor is prevented from entering the display panel from the alignment layer to influence the normal display of the display panel, therefore, the reliability of the display panel and the display device is favorably improved.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel is characterized by comprising a display area and a non-display area surrounding the display area, wherein the non-display area comprises a binding area, a first frame area arranged opposite to the binding area and a second frame area arranged adjacent to the binding area;

2. The display panel according to claim 1, wherein the thickness of the stripe-shaped barrier structures is larger than the thickness of the passivation layer in a direction perpendicular to the substrate base plate, and the thickness of the alignment layer is smaller than the difference between the thicknesses of the stripe-shaped barrier structures and the passivation layer.

3. The display panel according to claim 1, wherein an included angle between the extending direction of the sealant and the extending direction of the bar-shaped blocking structures is 0 ° or more and 5 ° or less.

4. The display panel according to claim 1, wherein α is 0.

5. The display panel according to claim 1, wherein the first substrate comprises a plurality of the bar-shaped barrier structures, and an arrangement direction of each bar-shaped barrier structure intersects with an extending direction of the bar-shaped barrier structure.

6. The display panel according to claim 5, wherein the stripe-shaped barrier structures comprise floating barrier structures, the floating barrier structures are in a floating state, and the floating barrier structures respectively comprise a plurality of sub-barrier structures; in the same floating barrier structure, the sub-barrier structures are arranged along a first direction, the first direction is the same as the extending direction of the floating barrier structure, and a first interval is arranged between every two adjacent sub-strip structures.

7. The display panel according to claim 1, wherein the stripe-shaped barrier structures comprise ground barrier structures, the ground barrier structures are grounded, and the ground barrier structures extend in the same direction as a whole.

8. The display panel according to claim 1, wherein the stripe-shaped barrier structures comprise ground barrier structures, and the ground barrier structures are grounded; the ground blocking structure comprises a first ground blocking structure and a second ground blocking structure which are connected with each other, the extending directions of the first ground blocking structure and the second ground blocking structure are intersected, and an opening of an included angle between the first ground blocking structure and the second ground blocking structure faces the display area; the extending directions of the first ground blocking structure and the second ground blocking structure are crossed with the arrangement direction of the ground blocking structures.

9. The display panel according to claim 7 or 8, wherein the display area includes a first edge adjacent to the second bezel area; an orthographic projection of the ground blocking structure toward the first edge covers the first edge.

10. The display panel according to claim 1, wherein the first substrate further comprises a gate driver circuit located in the second frame region; the gate driving circuit comprises a plurality of signal lines, and the signal lines are distributed in the first metal layer, the second metal layer and the third metal layer;

the signal line positioned on the third metal layer is a first signal line, and the extending direction of the first signal line is the same as the extending direction of the frame glue positioned on the second frame area.

11. The display panel according to claim 10, wherein a thickness of the first signal line is the same as a thickness of the stripe-shaped barrier structure in a direction perpendicular to the substrate base plate; along a second direction, the width of the first signal line is the same as that of the strip-shaped barrier structure.

12. The display panel of claim 11, wherein the thickness of the stripe-shaped barrier structures is H1, wherein H1 is 0.45 μm or less and 0.9 μm or less.

13. The display panel of claim 11, wherein the width of the stripe-shaped barrier structures is D1, wherein D1 ≧ 10 μm.

14. The display panel according to claim 10, wherein the stripe-shaped barrier structures and the first signal lines are uniformly arranged in the second frame region.

15. The display panel according to claim 14, wherein, in the second direction, a distance between any two adjacent first signal lines is D2, a distance between any two adjacent bar-shaped barrier structures is D3, a distance between the adjacent first signal lines and the bar-shaped barrier structures is D4, and D2 ═ D3 ═ D4 ≥ 5 μm.

16. A display device comprising the display panel according to any one of claims 1 to 15.