CN116456767A - Display panel and display device - Google Patents

Abstract

The invention relates to the technical field of display and discloses a display panel and a display device. The display panel is provided with the first metal layer at least in the display area of the substrate assembly, the cathode layer is arranged on the first metal layer, the first metal layer is electrically connected with the cathode layer in the display area, signal distribution is realized in the display area through the first metal layer, conduction is not required to be realized through edge lap joint of the cathode layer, and the frame size of the display panel is reduced. The display device reduces the frame size through the display panel, and is beneficial to the preparation of the display device with smaller volume.

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

Aiming at the existing mobile phones and wearing products, the demands of customers and consumers on narrow frames are increasingly strong, and the narrow frame technology becomes a core technology business module for competition of companies. In order to realize conductive connection between a driving circuit module of a display panel and the cathode layer, VSS signals transmitted by the driving circuit module are transferred onto the cathode layer through an array film layer of the display panel, and normally, the cathode layer is conducted with the array film layer for transmitting the VSS signals, and the edge of the cathode layer is required to be lapped with the array film layer, so that the space of the lap joint part of the cathode film layer and the array film layer cannot be compressed, and further the frame reduction requirement cannot be met. Therefore, there is a need to design a display panel that can solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a display panel and a display device, which solve the technical problem that the frame size of the existing display panel cannot be compressed.

To achieve the purpose, the invention adopts the following technical scheme:

the invention provides a display panel, which comprises a substrate assembly, wherein the substrate assembly comprises a display area and a non-display area at least positioned at one side of the display area, the substrate assembly is provided with a first metal layer at least positioned at the display area, the first metal layer is provided with a cathode layer, and the first metal layer is in conductive connection with the cathode layer in the display area.

The display panel is provided with the first metal layer at least in the display area of the substrate assembly, the cathode layer is arranged on the first metal layer, the first metal layer is electrically connected with the cathode layer in the display area, signal distribution is realized in the display area through the first metal layer, conduction is not required to be realized through edge lap joint of the cathode layer, and the frame size of the display panel is reduced.

As a preferred embodiment of the display panel, the first metal layer is in conductive communication with the cathode layer in the display area through at least one via hole.

The first metal layer and the cathode layer can be electrically connected in a through hole arrangement mode, and the preparation is simple.

As a preferable mode of the display panel, an anode layer is arranged between the first metal layer and the cathode layer, the anode layer comprises a plurality of array anode structures arranged in an array manner, the cathode layer comprises a plurality of groups of cathode assemblies arranged along a transverse direction or a longitudinal direction, each group of cathode assemblies are electrically connected through a cathode connecting structure, and the orthographic projection of the anode structure and the cathode assemblies on the substrate assembly is at least partially overlapped;

the first metal layer comprises a first metal structure extending along the longitudinal direction, the first metal structure stretches into the display area, the first metal structure is arranged between at least one group of any two adjacent columns of anode structures, and the first metal structure is in conductive connection with the cathode assembly and/or the cathode connection structure.

The display panel is characterized in that the cathode layer is arranged to comprise a plurality of groups of cathode assemblies arranged along the transverse direction or the longitudinal direction in a mode of changing the whole arrangement of the cathode layer, the groups of cathode assemblies are connected in a conductive mode through a cathode connecting structure, on the basis, a first metal structure stretches into a display area of the display panel and is arranged between at least one group of any two adjacent anode structures, the first metal structure is connected with the cathode structure and/or the cathode connecting structure in a conductive mode, signal distribution of the first metal structure in the display area along the longitudinal direction is achieved, conduction is not needed through overlapping of edges of the cathode layer, and the frame size of the display panel is reduced.

As a preferred solution of the above display panel, the cathode assembly arranged along the transverse direction includes a plurality of cathode structures arranged along the longitudinal direction in sequence, the cathode assembly arranged along the longitudinal direction includes a plurality of cathode structures arranged along the transverse direction in sequence, the cathode structures are arranged in an array, and the cathode structures are electrically connected with each other.

The arrangement ensures that the cathode structure is arranged in an array, and has simple structure and easy preparation.

As a preferable solution of the display panel, two adjacent groups of cathode structures arranged along the transverse direction are correspondingly connected through the cathode connection structure, and the cathode connection structure is a first cathode connection structure;

the two groups of cathode structures arranged along the longitudinal direction are correspondingly connected through the cathode connecting structure, the cathode connecting structure is a second cathode connecting structure, the first metal structure is arranged between at least one group of any two adjacent rows of cathode structures, and the first metal structure is in conductive connection with the first cathode connecting structure.

The first metal structure is arranged between at least one group of adjacent two rows of cathode structures and is electrically connected with the first cathode connection structure, so that the cathode structure is electrically connected with the first metal layer, and signals are conveniently transmitted to the cathode layer through the first metal layer.

As a preferable mode of the display panel, a width of the first cathode connection structure in the longitudinal direction is greater than a width of the second cathode connection structure in the transverse direction.

The arrangement ensures that the overlapping area of the first cathode connecting structure and the first metal structure is larger, thereby enhancing the conduction effect of the first cathode connecting structure and the first metal structure.

As a preferable mode of the display panel, the first metal structures are provided with a plurality of groups, and at least one row of anode structures is arranged between two adjacent groups of the first metal structures.

As a preferable mode of the display panel, the pitches between the plurality of sets of the cathode assemblies arranged in the lateral direction are at least partially equal; the spacing between sets of the cathode assemblies aligned in the longitudinal direction is at least partially equal.

As a preferred embodiment of the display panel, the first metal structure is electrically connected to the cathode assembly and/or the cathode connection structure through a via hole.

The first metal structure is conducted with the cathode assembly and/or the cathode connecting structure through the through hole, and the preparation is simple.

The invention also provides a display device comprising the display panel.

The display device reduces the frame size through the display panel, and is beneficial to the preparation of the display device with smaller volume.

The invention has the beneficial effects that:

according to the display panel provided by the invention, at least the first metal layer is arranged in the display area of the substrate assembly, the cathode layer is arranged on the first metal layer, the first metal layer is in conductive connection with the cathode layer in the display area, signal distribution is realized in the display area through the first metal layer, conduction is realized without overlapping the edges of the cathode layer, and the frame size of the display panel is reduced.

According to the display device provided by the invention, the frame size is reduced through the display panel, so that the preparation of the display device with smaller size is facilitated.

Drawings

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

fig. 2 is a cross-sectional view of a display panel according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a display panel according to a second embodiment of the present invention;

fig. 4 is a cross-sectional view of a display panel according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a display panel according to a third embodiment of the present invention;

fig. 6 is a cross-sectional view of a display panel according to a third embodiment of the present invention.

In the figure:

1. a substrate assembly;

21. an anode structure;

31. a cathode assembly; 32. a cathode structure; 30. a cathode connection structure; 35. a via hole;

41. a first metal structure;

51. a second metal structure;

6. a first insulating layer;

7. a second insulating layer;

8. a third insulating layer;

9. and a light emitting layer.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Embodiment one:

in order to realize conductive connection between a driving circuit module of a display panel and the cathode layer, VSS signals transmitted by the driving circuit module are transferred onto the cathode layer through an array film layer of the display panel, and normally, the cathode layer is conducted with the array film layer for transmitting the VSS signals, and the edge of the cathode layer is required to be lapped with the array film layer, so that the space of the lap joint part of the cathode film layer and the array film layer cannot be compressed, and further the frame reduction requirement cannot be met. Therefore, there is a need to design a display panel that can solve the above-mentioned problems.

In order to solve the above-mentioned problems, as shown in fig. 1 and 2, the present embodiment provides a display panel, including a substrate assembly 1, where the substrate assembly 1 includes a display area and a non-display area at least located at one side of the display area, the substrate assembly 1 is at least provided with a first metal layer in the display area, the first metal layer is electrically connected with the cathode layer in the display area, and signal distribution is realized in the display area through the first metal layer, so that conduction is not required to be realized through overlapping edges of the cathode layer, and frame size of the display panel is reduced.

Optionally, the first metal layer is electrically connected to the cathode layer in the display area through at least one via 35, and the connection mode is simple and convenient for preparation. However, if the number of the vias 35 is small, the voltage drop difference of the cathode layer is large. Thus, the number of vias 35 is set according to specific needs.

Alternatively, the first metal layer may be a surface layer structure, and of course, may also be a structure with other shapes.

As shown in fig. 1 and 2, the substrate assembly 1 includes a substrate and a device film layer, where the device film layer is disposed on the substrate, and the specific device film layer belongs to the prior art and can be adjusted according to the requirement, which is not described herein. The device membrane layer of base plate subassembly 1's top is provided with first metal level and second metal level, first metal level is located the top of second metal level, and through first insulating layer 6 looks insulation between first metal level and the second metal level, be equipped with anode layer and cathode layer on the first metal level in proper order, and anode layer and cathode layer interval set up, through second insulating layer 7 insulation setting between anode layer and the first metal level, anode layer includes the positive pole structure 21 of a plurality of arrays of array arrangement, positive pole structure 21 and second metal level conductive connection, the cathode layer includes the multiunit cathode assembly 31 of arranging along the transverse direction (X axle direction in fig. 1) or longitudinal direction (Y axle direction in fig. 1), through cathode connection structure 30 conductive connection between each group cathode assembly 31, positive projection at base plate subassembly 1 of positive pole structure 21 and cathode assembly 31 overlaps at least partially, cathode assembly 31 and first metal level conductive connection. The non-display area of the display panel located below the display area is provided with a driving circuit module (not shown in the drawing) electrically connected to the anode layer and the cathode layer through the anode structure 21 and the cathode assembly 31, respectively. In this embodiment, the driving circuit module is used for providing a voltage signal.

Further, the first metal layer includes a first metal structure 41 extending along a longitudinal direction, the first metal structure 41 extends into a display area of the display panel, the first metal structure 41 is arranged between at least one group of any two adjacent anode structures 21, the first metal structure 41 is electrically connected with the cathode connection structure 30, signal distribution of the first metal structure 41 in the display area along the longitudinal direction is achieved, conduction is achieved without overlapping edges of the cathode layer, and frame size of the display panel is reduced. As shown in fig. 1, the second metal layer includes a second metal structure 51, and the second metal structure 51 is electrically connected to the anode structure 21, so that signal transmission between the second metal layer and the anode structure 21 is achieved. In this embodiment, the first metal structure 41 transmits the VSS signal and the second metal structure 51 transmits the VDD signal.

Further, the cathode assembly 31 arranged along the transverse direction includes a plurality of cathode structures 32 arranged along the longitudinal direction, the cathode assembly 31 arranged along the longitudinal direction includes a plurality of cathode structures 32 arranged along the transverse direction, in this embodiment, the cathode structures 32 are arranged in an array, and the cathode structures 32 are electrically connected. The above arrangement makes the cathode structure 32 arranged in an array, and has simple structure and easy preparation.

Optionally, two adjacent groups of cathode structures 32 arranged along the transverse direction are correspondingly connected through a cathode connecting structure 30, and the cathode connecting structure 30 is a first cathode connecting structure; the two sets of cathode structures 32 arranged along the longitudinal direction are correspondingly connected through the cathode connection structure 30, the cathode connection structure 30 is a second cathode connection structure, the first metal structure 41 is disposed between at least one set of any two adjacent columns of cathode structures 32, in this embodiment, the first metal structure 41 is electrically connected with the first cathode connection structure, so that the cathode structure 32 is electrically connected with the first metal layer, so that signals can be conveniently transmitted to the cathode layer through the first metal layer.

Preferably, the width of the first cathode connection structure along the longitudinal direction is greater than the width of the second cathode connection structure along the transverse direction, so that the overlapping area of the first cathode connection structure and the first metal structure 41 is larger, and the conduction effect of the first cathode connection structure and the first metal structure 41 can be enhanced.

Optionally, a group of first metal structures 41 is disposed between any two adjacent columns of anode structures 21, so that power consumption can be reduced and brightness and uniformity of the display panel can be increased. In other embodiments, at least one row of anode structures 21 is disposed between two adjacent groups of first metal structures 41, and multiple rows of anode structures 21 can be disposed, so that the number of groups of first metal structures 41 is reduced, the resolution of the display panel is high, the pixels are small, the wiring is easy, and the improvement of the transmittance of the screen body is facilitated. Specifically, two rows of anode structures 21, three rows of anode structures 21, four rows of anode structures 21, and the like are disposed between two adjacent groups of first metal structures 41, and the number of columns of anode structures 21 may be specifically set according to the requirement.

Further, the number of columns of anode structures 21 disposed between any two adjacent groups of first metal structures 41 may be the same or different, so as to be flexibly disposed according to requirements. The number of columns of the cathode structures 32 arranged between any two adjacent groups of the first metal structures 41 is the same or different, so as to be flexibly arranged according to requirements.

Further, the pitches between the plural sets of cathode assemblies 31 arranged in the lateral direction are at least partially equal; the pitches between the sets of cathode assemblies 31 arranged in the longitudinal direction are at least partially equal. Specifically, the intervals between the multiple groups of cathode assemblies 31 are equal, the intervals between the multiple groups of cathode assemblies 31 are partially equal, and the intervals between the multiple groups of cathode assemblies 31 are not equal completely, so that a specific arrangement rule is set according to requirements.

Alternatively, the first metal structure 41 is electrically connected to the first cathode connection structure, and the first metal structure 41 is electrically connected to the first cathode connection structure through the via 35. The first metal structure 41 and the first cathode connection structure are conducted through the through hole 35, so that the preparation is simple. Conduction between the second metal structure 51 and the anode structure 21 is also achieved in the manner described above. Of course, the manner of conductive communication between the first metal structure 41 and the first cathode connection structure, and between the second metal structure 51 and the anode structure 21 is not limited to the above, and may be other manners as long as conductive communication between the two opposite each other is possible.

Optionally, a light emitting layer 9 is disposed between the cathode layer and the anode layer of the display panel, the orthographic projection of the light emitting region of the light emitting layer 9 on the substrate assembly 1 falls into the overlapping region of the orthographic projection of the anode structure 21 and the cathode assembly 31 on the substrate assembly 1, and the non-light emitting region between the cathode layer and the anode layer is insulated between the cathode layer and the anode layer by the third insulating layer 8.

Alternatively, the shape of the cathode structure 32 is rectangular or diamond-shaped, the shape of the anode structure 21 is the same as the shape of the cathode structure 32, and the center of the anode structure 21 coincides with the orthographic projection of the center of the cathode structure 32 at the substrate assembly 1.

The display panel is characterized in that the cathode layer is arranged to comprise a plurality of groups of cathode assemblies 31 which are arranged along the transverse direction or the longitudinal direction by changing the arrangement mode of the whole cathode layer, the groups of cathode assemblies 31 are connected in a conductive manner through a cathode connecting structure 30, on the basis, a first metal structure 41 stretches into a display area of the display panel and is arranged between at least one group of any two adjacent anode structures 21, the first metal structure 41 is connected with the cathode connecting structure 30 in a conductive manner, the first metal structure 41 is distributed in the display area along the longitudinal direction, the connection is not required to be realized through the edge lap joint of the cathode layer, and the frame size of the display panel is reduced.

Embodiment two:

as shown in fig. 3 and 4, the present embodiment provides a display panel, the display panel includes a substrate assembly 1, the substrate assembly 1 includes a substrate and a device film layer, the device film layer is disposed on the substrate, the specific device film layer may be disposed according to the requirement, a first metal layer and a second metal layer are disposed above the device film layer of the substrate assembly 1, the first metal layer is located above the second metal layer, and is insulated from the second metal layer by a first insulating layer 6, the first metal layer is sequentially provided with an insulated cathode layer and an anode layer, the anode layer and the first metal layer are insulated from each other by a second insulating layer 7, the anode layer includes a plurality of anode structures 21 arranged in an array, the anode structures 21 are electrically connected with the second metal layer, the cathode layers include a plurality of groups of cathode assemblies 31 arranged along a longitudinal direction (Y-axis direction in fig. 3), the cathode assemblies 31 of each group are electrically connected with each other by a cathode connection structure 30, and the positive projections of the anode structures 21 and the cathode assemblies 31 on the substrate assembly 1 are at least partially overlapped, and the cathode assemblies 31 are electrically connected with the first metal layer. The non-display area of the display panel located below the display area is provided with a driving circuit module (not shown in the drawing) electrically connected to the anode layer and the cathode layer through the anode structure 21 and the cathode assembly 31, respectively. In this embodiment, the driving circuit module is used for providing a voltage signal.

Further, the first metal layer includes a first metal structure 41 extending along a longitudinal direction, the first metal structure 41 extends into a display area of the display panel, the first metal structure 41 is arranged between at least one group of any two adjacent columns of anode structures 21, the first metal structure 41 is electrically connected with the cathode assembly 31, signal distribution of the first metal structure 41 in the display area along the longitudinal direction is achieved, conduction is achieved without overlapping edges of the cathode layer, and frame size of the display panel is reduced. As shown in fig. 1, the second metal layer includes a second metal structure 51, and the second metal structure 51 is electrically connected to the anode structure 21, so that signal transmission between the second metal layer and the anode structure 21 is achieved. In this embodiment, the first metal structure 41 transmits the VSS signal and the second metal structure 51 transmits the VDD signal.

With continued reference to fig. 1, the cathode assemblies 31 are in a strip structure, the plurality of groups of cathode assemblies 31 are sequentially arranged along the longitudinal direction, the strip structure extends along the transverse direction (X-axis direction in fig. 3), two adjacent groups of cathode assemblies 31 are connected through a cathode connecting structure 30, and the positions and the number of the groups of the cathode connecting structures 30 between the two adjacent groups of cathode assemblies 31 are specifically set according to requirements.

In this embodiment, the first metal structure 41 is electrically connected to the cathode assembly 31 through the via 35. The first metal structure 41 and the cathode assembly 31 are conducted through the through hole 35, so that the preparation is simple.

Optionally, a group of first metal structures 41 is disposed between any two adjacent columns of anode structures 21, so that power consumption can be reduced and brightness and uniformity of the display panel can be increased. In other embodiments, the plurality of anode structures 21 are disposed between two adjacent first metal structures 41, so that the number of the first metal structures 41 is reduced, the resolution of the display panel is high, the pixels are small, the wiring is easy, and the improvement of the transmittance of the screen body is facilitated. Specifically, two rows of anode structures 21, three rows of anode structures 21, four rows of anode structures 21, and the like are disposed between two adjacent groups of first metal structures 41, and the number of columns of anode structures 21 may be specifically set according to the requirement.

Further, the intervals between two adjacent cathode assemblies 31 may be set to be equal, may be set to be partially equal, may be set to be completely unequal, and the specific arrangement manner may be adjusted according to the needs.

Optionally, the anode structure 21 is rectangular or diamond-shaped, the light-emitting layer 9 is disposed between the cathode layer and the anode layer of the display panel, the orthographic projection of the light-emitting region of the light-emitting layer 9 on the substrate assembly 1 falls into the overlapping region of the orthographic projection of the anode structure 21 and the cathode assembly 31 on the substrate assembly 1, and the position of the non-light-emitting region between the cathode layer and the anode layer realizes the insulation between the cathode layer and the anode layer through the third insulating layer 8.

The mode that this display panel was arranged through changing the cathode layer whole face sets up the cathode layer to including the multiunit cathode assembly 31 of arranging along longitudinal direction, connect through cathode connection structure 30 electrically conductive between each group cathode assembly 31, on this basis, first metal structure 41 stretches into in the display area of display panel, and set up between at least a set of arbitrary adjacent two positive pole structures 21, first metal structure 41 and cathode structure 32 electrically conductive are connected, realized that first metal structure 41 realizes signal distribution along longitudinal direction in the display area, need not to realize switching on through cathode layer edge overlap joint, reduced display panel's frame size.

Embodiment III:

as shown in fig. 5 and 6, this embodiment provides a display panel, the display panel includes a substrate assembly 1, the substrate assembly 1 includes a substrate and a device film layer, the device film layer is disposed on the substrate, the specific device film layer is disposed according to the requirement, a first metal layer and a second metal layer are disposed above the device film layer of the substrate assembly 1, the first metal layer is located above the second metal layer, and is insulated from the second metal layer by a first insulating layer 6, the first metal layer is sequentially provided with an insulated cathode layer and an anode layer, the anode layer includes a plurality of anode structures 21 arranged in an array, the anode structures 21 are electrically connected with the second metal layer, the cathode layers include a plurality of cathode assemblies 31 arranged along a transverse direction (X-axis direction in fig. 5), the cathode assemblies 31 of each group are electrically connected with each other by a cathode connecting structure 30, the anode structures 21 and the cathode assemblies 31 are at least partially overlapped in a front projection of the substrate assembly 1, and the cathode assemblies 31 are electrically connected with the first metal layer. The non-display area of the display panel located below the display area is provided with a driving circuit module electrically connected to the anode layer and the cathode layer through the anode structure 21 and the cathode assembly 31, respectively. In this embodiment, the driving circuit module is used for providing a voltage signal.

Further, the first metal layer includes a first metal structure 41 extending along a longitudinal direction, the first metal structure 41 extends into a display area of the display panel, the first metal structure 41 is arranged between at least one group of any two adjacent anode structures 21, the first metal structure 41 is electrically connected with the cathode connection structure 30, signal distribution of the first metal structure 41 in the display area along the longitudinal direction is achieved, conduction is achieved without overlapping edges of the cathode layer, and frame size of the display panel is reduced. As shown in fig. 1, the second metal layer includes a second metal structure 51, and the second metal structure 51 is electrically connected to the anode structure 21, so that signal transmission between the second metal layer and the anode structure 21 is achieved. In this embodiment, the first metal structure 41 transmits the VSS signal and the second metal structure 51 transmits the VDD signal.

With continued reference to fig. 1, the cathode assemblies 31 are in a strip structure, the multiple groups of cathode assemblies 31 are sequentially arranged along the transverse direction, the strip structure extends along the longitudinal direction, two adjacent groups of cathode assemblies 31 are connected through a cathode connecting structure 30, and the positions and the number of the cathode connecting structures 30 between the specific two adjacent groups of cathode assemblies 31 are set according to requirements.

In this embodiment, the first metal structure 41 is electrically connected to the cathode connection structure 30 of the cathode assembly 31 through the via 35. The first metal structure 41 and the cathode assembly 31 are conducted through the through hole 35, so that the preparation is simple.

Optionally, a group of first metal structures 41 is disposed between any two adjacent columns of anode structures 21, so that power consumption can be reduced and brightness and uniformity of the display panel can be increased. In other embodiments, the plurality of anode structures 21 are disposed between two adjacent first metal structures 41, so that the number of the first metal structures 41 is reduced, the resolution of the display panel is high, the pixels are small, the wiring is easy, and the improvement of the transmittance of the screen body is facilitated. Specifically, two rows of anode structures 21, three rows of anode structures 21, four rows of anode structures 21, and the like are disposed between two adjacent groups of first metal structures 41, and the number of columns of anode structures 21 may be specifically set according to the requirement.

Further, the intervals between two adjacent cathode assemblies 31 may be set to be equal, may be set to be partially equal, may be set to be completely unequal, and the specific arrangement manner may be adjusted according to the needs.

Optionally, the anode structure 21 is rectangular or diamond-shaped, the light-emitting layer 9 is disposed between the cathode layer and the anode layer of the display panel, the orthographic projection of the light-emitting region of the light-emitting layer 9 on the substrate assembly 1 falls into the overlapping region of the orthographic projection of the anode structure 21 and the cathode assembly 31 on the substrate assembly 1, and the position of the non-light-emitting region between the cathode layer and the anode layer realizes the insulation between the cathode layer and the anode layer through the third insulating layer 8.

The mode that this display panel was arranged through changing the cathode layer whole face sets up the cathode layer to including the multiunit cathode assembly 31 that arranges along horizontal direction, connect through cathode connection structure 30 electric conduction between each group cathode assembly 31, on this basis, first metal structure 41 stretches into in the display area of display panel, and set up between at least a set of arbitrary adjacent two positive pole structures 21, first metal structure 41 and cathode connection structure 30 electric conduction are connected, realized that first metal structure 41 realizes signal distribution along longitudinal direction in the display area, need not to realize switching on through cathode layer edge overlap joint, reduced display panel's frame size.

Embodiment four:

the present embodiment provides a display device including the display panel in any one of the above embodiments.

The display device reduces the frame size through the display panel, and is beneficial to the preparation of the display device with smaller volume.

Specifically, the display device may be a structure such as a mobile phone, a wearable watch, a display, etc.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. The display panel is characterized by comprising a substrate assembly (1), wherein the substrate assembly (1) comprises a display area and a non-display area at least positioned at one side of the display area, the substrate assembly (1) is at least provided with a first metal layer in the display area, the first metal layer is provided with a cathode layer, and the first metal layer is in conductive connection with the cathode layer in the display area.

2. A display panel according to claim 1, characterized in that the first metal layer is in conductive communication with the cathode layer within the display area at least by means of one via (35).

3. A display panel according to claim 1, characterized in that an anode layer is arranged between the first metal layer and the cathode layer, the anode layer comprising a plurality of array anode structures (21) arranged in an array, the cathode layer comprising a plurality of groups of cathode assemblies (31) arranged in a lateral or longitudinal direction, each group of cathode assemblies (31) being electrically connected by a cathode connection structure (30), the anode structures (21) and the cathode assemblies (31) at least partially overlapping in an orthographic projection of the substrate assembly (1);

the first metal layer comprises a first metal structure (41) extending along the longitudinal direction, the first metal structure (41) stretches into the display area, the first metal structure (41) is arranged between at least one group of any two adjacent columns of anode structures (21), and the first metal structure (41) is electrically connected with the cathode assembly (31) and/or the cathode connecting structure (30).

4. A display panel according to claim 3, characterized in that the cathode assembly (31) arranged in the transverse direction comprises a plurality of cathode structures (32) arranged in sequence in the longitudinal direction, the cathode assembly (31) arranged in the longitudinal direction comprises a plurality of cathode structures (32) arranged in sequence in the transverse direction, the cathode structures (32) are arranged in an array, and the cathode structures (32) are electrically conductive connected to each other.

5. The display panel according to claim 4, wherein two adjacent groups of the cathode structures (32) arranged in the lateral direction are correspondingly connected by the cathode connection structure (30), and the cathode connection structure (30) is a first cathode connection structure;

the two groups of cathode structures (32) arranged along the longitudinal direction are correspondingly connected through the cathode connecting structures (30), the cathode connecting structures (30) are second cathode connecting structures, the first metal structures (41) are arranged between at least one group of any two adjacent rows of the cathode structures (32), and the first metal structures (41) are electrically connected with the first cathode connecting structures.

6. The display panel of claim 5, wherein a width of the first cathode connection structure in a longitudinal direction is greater than a width of the second cathode connection structure in the lateral direction.

7. A display panel according to any of claims 3-6, characterized in that the first metal structures (41) are arranged in groups, between two adjacent groups of the first metal structures (41) at least one column of the anode structures (21) is arranged.

8. A display panel according to any one of claims 3-6, characterized in that the spacing between groups of the cathode assemblies (31) arranged in the lateral direction is at least partially equal; the spacing between sets of the cathode assemblies (31) aligned in the longitudinal direction is at least partially equal.

9. A display panel according to any of claims 3-6, characterized in that the first metal structure (41) is conductively connected to the cathode assembly (31) and/or the cathode connection structure (30) by means of a via (35).

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