CN114335105A

CN114335105A - Display panel and display device

Info

Publication number: CN114335105A
Application number: CN202111631214.5A
Authority: CN
Inventors: 李洪瑞; 米磊; 马一鸿; 刘雨生; 赵利军
Original assignee: Hefei Visionox Technology Co Ltd
Current assignee: Hefei Visionox Technology Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-12

Abstract

The application provides a display panel and a display device, relates to the technical field of display, and aims to solve the problem that the display effect of the display panel is poor. The display panel comprises a plurality of signal lines, at least part of the signal lines comprise first signal lines, second signal lines and connecting winding lines, and the first signal lines and the second signal lines are respectively positioned at two opposite sides of a functional area and are connected through the connecting winding lines; the display panel comprises a substrate, a winding layer, a driving array layer and a pixel limiting layer which are sequentially stacked, wherein an opening area and a non-opening area are formed in the pixel limiting layer; the first signal line and the second signal line are positioned in the driving array layer, and the connecting winding is positioned in the winding layer; the connection winding and the first signal wire and the connection winding and the second signal wire are respectively connected through corresponding connection structures, the connection structures are located in the transition area, and the orthographic projection of the connection structures on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. This application can promote display panel's display effect.

Description

Display panel and display device

Technical Field

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

Background

With the rapid development of electronic equipment, the requirement of a user on the screen occupation ratio is higher and higher, and a comprehensive screen technology combining a main screen and an auxiliary screen is developed.

In the full-screen technology, a display panel has a main screen area and a sub-screen area. The main screen area is used for emitting light and displaying. The sub-screen area is used for performing the under-screen technology of a specific area and forming an opening on the display panel. The opening of the auxiliary screen area enables various signal wires in the main screen area to form broken wires at the opening. In the related art, the winding wires are arranged around the opening holes, and the broken wires at the corresponding opening holes in the main screen area are correspondingly connected one by utilizing the winding wires so as to ensure the normal light emitting and displaying functions of the main screen area.

However, the display panel in the above technical solution has a poor display effect.

Disclosure of Invention

In view of the above problems, the present application provides a display panel and a display device, which can improve the display effect of the display panel.

In order to achieve the above purpose, the present application provides the following technical solutions:

a first aspect of an embodiment of the present application provides a display panel, including a display area, a transition area, and a functional area, where the transition area is located between the display area and the functional area, and the transition area is adjacent to the display area and the functional area, respectively.

The display panel further comprises a plurality of signal lines, at least part of the signal lines comprise first signal lines, second signal lines and connecting winding lines, and the first signal lines and the second signal lines are located on two opposite sides of the functional area respectively and are connected through the connecting winding lines.

The display panel comprises a substrate, a winding layer, a driving array layer and a pixel limiting layer which are sequentially stacked, wherein an opening area and a non-opening area are formed in the pixel limiting layer; the first signal line and the second signal line are positioned in the driving array layer, and the connecting winding is positioned in the winding layer; the connection winding and the first signal wire and the connection winding and the second signal wire are connected through corresponding connection structures respectively, the connection structures are located in the transition area, and the orthographic projection of the connection structures on the substrate does not exceed the orthographic projection of the non-opening area on the substrate.

The embodiment of the application provides a display panel, which comprises a display area, a transition area and a functional area. The display panel also comprises a plurality of signal lines, at least part of the signal lines comprise first signal lines, second signal lines and connecting winding lines, and the first signal lines and the second signal lines are respectively positioned at two opposite sides of the functional area and are connected through the connecting winding lines. The first signal wire and the second signal wire are positioned in the driving array layer, and the connecting winding wire is positioned in the winding layer; the connection winding and the first signal wire and the connection winding and the second signal wire are respectively connected through corresponding connection structures, the connection structures are located in the transition area, and the orthographic projection of the connection structures on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. Like this, first signal line and second signal line and be connected the connection structure between the wire winding and covered by non-opening area, it sets up between drive array layer and substrate to connect the wire winding, make display panel have connection structure on and be provided with the reflection degree of connecting wire-wound position to ambient light and other light, it is all the same to the reflection degree of ambient light and other light with other regions on display panel, avoid appearing transition zone and display area's display effect difference problem, display panel's display area, transition zone and functional area all present the display effect of homogeneity under each visual angle, and display panel is at the picture display and all there is not the difference of display effect under the dark state, display panel and the display device's that uses this display panel display effect's display effect has been promoted.

In one implementation, the driving array layer includes an active layer, a first metal layer, a second metal layer, a third metal layer, and a fourth metal layer sequentially arranged in a direction away from the substrate.

At least part of the first metal layer forms a grid metal layer, at least part of the second metal layer forms a capacitance metal layer, at least part of the third metal layer forms a source drain metal layer, and at least part of the fourth metal layer forms an auxiliary metal layer.

The signal lines are set as data signal lines or scanning signal lines.

Therefore, the transistors and the capacitors are formed by the arrangement of the metal layers, the laying of various signal wires can be realized by the arrangement of the metal layers, and the signal wires are connected with the driving circuit of the transistors, so that the normal driving function of the driving array layer is ensured.

In one implementation, the signal lines include data signal lines,

the first signal line includes a first data signal line, the second signal line includes a second data signal line, and the connection winding includes a data connection winding.

At least a part of the first data signal line and the second data signal line are formed by the third metal layer and the fourth metal layer together.

Therefore, the winding layer is connected with the third metal layer or the fourth metal layer through the connecting structure, and connection of broken lines of the data signal lines close to the functional area can be achieved.

In one implementation, the signal line includes a plurality of scanning signal lines, the first signal line includes a first scanning signal line, the second signal line includes a second scanning signal line, and the connection winding includes a scanning signal connection winding.

At least a part of the first scanning signal lines and the second scanning signal lines are formed by the first metal layer or the second metal layer.

Therefore, the winding layer is connected with the first metal layer or the second metal layer through the connecting structure, and the broken connection of the scanning signal line close to the functional area can be realized.

In one possible embodiment, the orthographic projection of at least part of the connecting wire on the substrate does not exceed the orthographic projection of the non-opening area on the substrate.

In this way, the connection winding is also covered by the non-open area, facilitating the connection of the connection structure with the connection winding.

In an embodiment, a sum of reactances of one of the connection windings and the corresponding first and second signal lines is equal to a sum of reactances of the other of the connection windings and the corresponding first and second signal lines.

Therefore, the reactance balance among the signal lines can be realized by arranging the winding path for connecting the winding, the uniformity of the display effect of the display area is ensured, and the display effect of the display panel is optimized.

In one possible implementation, the connection structure includes a conductive connection column, one end of the conductive connection column away from the substrate is electrically connected to the first signal line or the second signal line, and one end of the conductive connection column close to the substrate is electrically connected to the connection winding.

Or, the connecting structure comprises at least two conductive connecting columns distributed at intervals along the thickness direction of the display panel and a middle layer connected with the adjacent conductive connecting columns, the conductive connecting column far away from the substrate is electrically connected with the first signal line or the second signal line, and the conductive connecting column close to the substrate is electrically connected with the connecting winding.

Therefore, the connection structure can be flexibly formed by the disposable through hole or the stepped through hole according to the thickness of the display panel between the broken line of the signal line close to the functional area and the connection winding, and the reliability of the electric connection of the broken line of the signal line close to the functional area and the connection winding is improved conveniently.

In one possible embodiment, a plurality of the connecting structures are at equal linear distances from the edge of the functional region.

By the arrangement, the area of the transition region can be reduced, and the display effect of the display panel is optimized.

In one possible embodiment, the active layer has a channel region, and an orthographic projection of the channel region on the substrate and an orthographic projection of the connection winding on the substrate do not coincide with each other.

By the arrangement, the structure that the active layer and the connecting winding wire form a double-gate transistor can be effectively avoided, and the influence on the driving process of the driving array layer is prevented. In addition, the display area is not influenced, and the display effect of the display panel is not influenced.

A second aspect of the embodiments of the present application provides a display device, including the display panel described above.

The display device provided by the embodiment of the application comprises the display panel. The display panel includes a display area, a transition area, and a functional area. The display panel also comprises a plurality of signal lines, at least part of the signal lines comprise first signal lines, second signal lines and connecting winding lines, and the first signal lines and the second signal lines are respectively positioned at two opposite sides of the functional area and are connected through the connecting winding lines. The first signal wire and the second signal wire are positioned in the driving array layer, and the connecting winding wire is positioned in the winding layer; the connection winding and the first signal wire and the connection winding and the second signal wire are respectively connected through corresponding connection structures, the connection structures are located in the transition area, and the orthographic projection of the connection structures on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. Like this, first signal line and second signal line and be connected the connection structure between the wire winding and covered by non-opening area, it sets up between drive array layer and substrate to connect the wire winding, make display panel have connection structure on and be provided with the reflection degree of connecting wire-wound position to ambient light and other light, it is all the same to the reflection degree of ambient light and other light with other regions on display panel, avoid appearing transition zone and display area's display effect difference problem, display panel's display area, transition zone and functional area all present the display effect of homogeneity under each visual angle, and display panel is at the picture display and all there is not the difference of display effect under the dark state, display panel and the display device's that uses this display panel display effect's display effect has been promoted.

The construction and other objects and advantages of the present application will be more apparent from the description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at M;

FIG. 3 is a schematic view of a view from direction A-A of FIG. 2;

FIG. 4a is another schematic view of the structure of FIG. 2 from view A-A;

FIG. 4b is another schematic view of the A-A view of FIG. 2;

FIG. 5 is another schematic view of the A-A view of FIG. 2;

FIG. 6 is a schematic view of a structure of the view from direction B-B of FIG. 2;

FIG. 7 is another schematic view of the structure of the view along the line B-B in FIG. 2;

fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

FIG. 9 is an enlarged view of a portion of FIG. 8 at N;

FIG. 10 is a schematic view of a structure of the view along C-C of FIG. 9;

FIG. 11 is another schematic view of the structure of FIG. 9 in the direction of C-C;

FIG. 12 is a schematic view of a structure of the D-D view of FIG. 9;

fig. 13 is another schematic view of the structure of fig. 9 from view D-D.

Description of reference numerals:

100-a display panel;

101-a display area; 102-a transition zone; 103-functional region; 104-a non-display area;

1011-first signal line; 1012-second signal line; 1013-connecting winding;

10131-first connecting winding; 10132-second connecting winding;

110-a substrate;

120-a winding layer;

121-winding insulating medium layer;

130-drive array layer;

1300-an active layer; 13001-channel region; 1301-a gate insulating layer; 131-a first metal layer;

1312-a capacitor insulating layer; 132-a second metal layer; 1323 — interlayer insulating layer; 133-a third metal layer; 1334-a first planarizing layer; 134-a fourth metal layer; 1345-a second planarization layer;

140-a light-emitting layer;

141-pixel layer; 1411-anode layer; 1412 — organic light emitting layer; 1413-a cathode layer; 142-a pixel defining layer; 1421-open area; 1422 — non-open area;

150-a linking structure; 1501-a conductive connection post; 1502-an intermediate layer;

160-auxiliary connection structure.

Detailed Description

In the related art, the display panel includes a substrate, a driving array layer, and a light emitting layer, which are sequentially stacked. The display panel can include a main screen area and an auxiliary screen area which are adjacently arranged, and a transistor, a capacitor and various signal wires are arranged on a driving array layer positioned in the main screen area. The signal traces may include a scan signal trace, a data signal trace, a ground signal trace, and a reference voltage signal trace. The display panel in the auxiliary screen area is provided with an opening, and the opening is used for being matched with under-screen functional devices such as an under-screen camera, an under-screen fingerprint identification device, an under-screen distance sensor and the like to realize the specific auxiliary function of the display panel. The opening of the auxiliary screen area enables signal wires of the main screen area to form broken wires at the opening, and winding wires need to be arranged around the opening to connect the broken wires in a one-to-one correspondence mode. The part of the winding can be distributed at the position close to the opening in the main screen area, and the additional winding is arranged at the position close to the opening in the main screen area, so that the distribution density of signal routing of the main screen area close to the opening and the signal routing of the main screen areas of other areas are different. However, the signal routing densities are different, and the reflection degrees of the ambient light or other light are different, so that the display effect of the main screen area close to the opening hole is different from that of the main screen areas of other areas, and the whole display effect of the display panel is affected.

In view of the foregoing technical problems, embodiments of the present application provide a display panel and a display device. The display panel includes a display area, a transition area, and a functional area. The display panel also comprises a plurality of signal lines, at least part of the signal lines comprise first signal lines, second signal lines and connecting winding lines, and the first signal lines and the second signal lines are respectively positioned at two opposite sides of the functional area and are connected through the connecting winding lines. The first signal wire and the second signal wire are positioned in the driving array layer, and the connecting winding wire is positioned in the winding layer; the connection winding and the first signal wire and the connection winding and the second signal wire are respectively connected through corresponding connection structures, the connection structures are located in the transition area, and the orthographic projection of the connection structures on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. Like this, first signal line and second signal line and the connection structure non-open area who is connected between the wire winding cover, it sets up between drive array layer and substrate to connect the wire winding, make display panel have connection structure on and be provided with the reflection degree of connecting wire-wound position to environment light and other light, it is all the same to the reflection degree of environment light and other light with other regions on display panel, avoid appearing transition zone and display area's display effect difference problem, display panel's display area, transition zone and functional area can all present the display effect of homogeneity under each visual angle, and display panel is at the picture display and all there is not the difference of display effect under the dark state, display panel and the display device's that uses this display panel display effect's display effect has been promoted.

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure; FIG. 2 is an enlarged view of a portion of FIG. 1 at M; FIG. 3 is a schematic view of a view from direction A-A of FIG. 2; FIG. 4a is another schematic view of the structure of FIG. 2 from view A-A; FIG. 4b is another schematic view of the A-A view of FIG. 2; FIG. 5 is another schematic view of the A-A view of FIG. 2; FIG. 6 is a schematic view of a structure of the view from direction B-B of FIG. 2; FIG. 7 is another schematic view of the structure of the view along the line B-B in FIG. 2; fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure; FIG. 9 is an enlarged view of a portion of FIG. 8 at N; FIG. 10 is a schematic view of a structure of the view along C-C of FIG. 9; FIG. 11 is another schematic view of the structure of FIG. 9 in the direction of C-C; FIG. 12 is a schematic view of a structure of the D-D view of FIG. 9; fig. 13 is another schematic view of the structure of fig. 9 from view D-D.

Referring to fig. 1 to 13, in a first aspect, an embodiment of the present application provides a display panel 100, which includes a display area 101, a transition area 102, a functional area 103, and a non-display area 104, where the non-display area 104 surrounds a periphery of the display area 101, the transition area 102 is located between the display area 101 and the functional area 103, and the transition area 102 is adjacent to the display area 101 and the functional area 103, respectively.

The display panel 100 further includes a plurality of signal lines, at least some of the signal lines include a first signal line 1011, a second signal line 1012 and a connection winding 1013, and the first signal line 1011 and the second signal line 1012 are respectively located at two opposite sides of the functional region 103 and connected by the connection winding 1013.

The display panel 100 includes a substrate 110, a winding layer 120, a driving array layer 130, and a pixel defining layer 142, which are sequentially stacked, wherein the pixel defining layer 142 is formed with an opening area 1421 and a non-opening area 1422; the first signal line 1011 and the second signal line 1012 are located in the driving array layer 130, and are connected with the winding wire 1013 to form the winding layer 120; the connecting winding 1013 and the first signal line 1011 and the connecting winding 1013 and the second signal line 1012 are respectively connected by the corresponding connecting structure 150, the connecting structure 150 is located in the transition region 102, and the orthographic projection of the connecting structure 150 on the substrate 110 does not exceed the orthographic projection of the non-opening region 1422 on the substrate 110.

The display panel 100 may be an organic light emitting diode display panel. The display panel 100 may include a substrate 110, a driving array layer 130, and a light emitting layer 140 sequentially stacked.

The driving array layer 130 is provided with a driving unit, and the driving unit includes a transistor, a capacitor, and various signal traces. The signal traces may include a scan signal trace, a data signal trace, a ground signal trace, and a reference voltage signal trace. Each signal trace includes a plurality of signal lines, and the plurality of signal lines of each signal trace are spaced apart from each other in the driving array layer 130 along a predetermined direction.

The emission layer 140 includes a pixel defining layer 142 and a plurality of pixel layers 141. The number of the driving units in the pixel layer 141 and the driving array layer 130 may be equal, and the plurality of pixel layers 141 and the plurality of driving units are disposed in a one-to-one correspondence. Specifically, a light emitting stack layer is generally disposed in the pixel layer 141, and the light emitting stack layer may include an anode layer 1411, a hole transport layer, a hole injection layer, an organic light emitting layer 1412, an electron injection layer, an electron transport layer, and a cathode layer 1413, which are sequentially stacked. The driving unit in the driving array layer 130 is connected to the anode layer 1411 or the cathode layer 1413 to provide an electrical signal for the light emitting stack layer. When an electrical signal is written in the light emitting stack layer, holes of the anode layer 1411 are transmitted to the organic light emitting layer 1412 through the hole transport layer and the hole injection layer, electrons of the cathode layer 1413 are transmitted to the organic light emitting layer 1412 through the electron transport layer and the electron injection layer, and the electrons and the holes are combined in the organic light emitting layer 1412 to generate photoelectrons, so that the pixel layer 141 emits light.

The pixel defining layer 142 is formed with an open area 1421 and a non-open area 1422. The pixel layer 141 is positioned within the open area 1421. In some embodiments, the cathode layer 1413 or the anode layer 1411 in the pixel layer 141, as well as other portions of the light emitting stack layers, may also extend to the non-open area 1422. The pixel defining layer 142 is generally made of a black light-absorbing resin material for preventing light of adjacent two pixel layers from being mixed.

As shown in fig. 1 and 8, the display area 101 occupies most of the area of the display panel 100 for light emission and image display. A functional area 103 is formed in a specific area on the display panel 100, and is used for cooperating with an off-screen functional device such as an off-screen camera, an off-screen fingerprint recognition device, an off-screen distance sensor, and the like to realize a specific auxiliary function of the display panel, and the functional area 103 is connected to the display area 101 via a transition area 102.

It is understood that, in order to ensure the uniformity of the display effect of the display panel 100, the functional regions 103 may also emit light and display images. Due to the design of the under-screen technology, the functional region 103 also needs to satisfy a certain transmittance, so the display panel 100 located in the functional region 103 usually needs to be perforated to ensure the transmittance. According to the actual light transmittance or the design requirement, the opening of the functional region 103 may be a circular hole as shown in fig. 1, or a square hole as shown in fig. 8; the number of the openings can be one or more; the position of the opening may be in the middle of the display panel 100 as shown in fig. 1 and 8, or may be near the edge of the display panel 100. In the embodiment of the present application, the shape, number and position of the openings of the functional region 103 are not limited.

As shown in fig. 2 and fig. 9, due to the design of the opening of the functional region 103, a part of the signal lines in the driving array layer 130 of the display region 101 is disconnected at a position where the functional region 103 is close to the opening. The broken line of one signal line on one side of the functional region 103 is a first signal line 1011, the broken line of the same signal line on the other side of the functional region 103 is a second signal line 1012, and the first signal line 1011 and the second signal line 1012 are located on opposite sides of the functional region 103 and extend in the same direction.

In the embodiment of the present application, the first signal line 1011 and the second signal line 1012 are connected to each other via the connection winding 1013 in the transition region 102, and the connection manner of the first signal line 1011 and the connection winding 1013 is the same as the connection manner of the second signal line 1012 and the connection winding 1013. Therefore, only the connection mode between the first signal line 1011 and the connection winding 1013 will be described as an example.

Specifically, as shown in fig. 2 to 5 or 9 to 11, a pixel defining layer 142 is disposed in the transition region 102.

The orthographic projection of the connecting structure 150 on the substrate 110 does not exceed the orthographic projection of the non-open area 1422 on the substrate 110. One end of the connection structure 150 far from the substrate 110 is connected to the first signal line 1011 (formed by a metal layer) in the driving array layer 130, and one end of the connection structure 150 near the substrate 110 is connected to the connection winding 1013 in the winding layer 120. Thus, the connection winding 1013 and the first signal line 1011 are connected by the connection structure 150.

The connection winding 1013 and the second signal line 1012 are connected by the other connection structure 150, referring to the connection method of the connection winding 1013 and the first signal line 1011. Therefore, the first signal line 1011 is connected to the second signal line 1012 through the connection winding 1013, so that the connection of the signal line close to the functional region 103 is completed, and the continuity of the signal transmission of the signal line is ensured.

It should be noted that, since the connection winding 1013 is located between the driving array layer 130 and the substrate 110 and the connection winding is shielded by the driving array layer, the reflection degree of the display panel at the location where the connection winding 1013 is located on the ambient light and other light is the same as the reflection degree of the display panel at other areas on the ambient light and other light, and there is no problem of display differentiation between the connection winding location in the transition area and the display area, therefore, only the portion of the connection winding 1013 connected with the connection structure 150 may be located in the transition area 102. The embodiment of the present application is not limited to other portions of the connecting winding 1013, which may be located in the transition region 102 or extend out of the transition region 102 and extend into the display region 101. The connection winding 1013 may be made of transparent or opaque material, and may be made of low impedance material to improve the signal transmission effect.

It can be understood that the position arrangement of the connecting winding 1013 does not cause the problem of display differentiation between the connecting winding position in the transition region and the display region; moreover, the connecting structure 150 is also covered by the non-opening area 1422, which does not cause the problem of display differentiation between the position of the connecting structure 150 in the transition area and the display area; therefore, the transition region 102 can be selected to cover only the portion of the connection structure 150 as the non-opening region 1422, and the other region is the opening region 1421 and the pixel layer 141 is disposed.

In the display panel 100 of the present embodiment, the connection structures between the first signal line 1011 and the second signal line 1012 and the connection winding 1013 are covered by the non-opening region 1422, the connection winding 1013 is disposed between the driving array layer 130 and the substrate 110, so that the display panel 100 has the connection structure 150 and the reflection degree of the connection winding 1013 on the position to the ambient light and other light, the reflection degree of the display panel 100 to the ambient light and other light is the same as that of other areas, so that the problem of display effect differentiation between the transition area 102 and the display area 101 is avoided, the display area 101, the transition area 102 and the functional area 103 of the display panel 100 can have uniform display effect under various viewing angles, in addition, the display panel 100 has no difference between the display effect in the image display and the display effect in the dark state, so that the display effect of the display panel 100 and the display device using the display panel 100 is improved.

In one implementation, referring to fig. 3-7, the driving array layer 130 includes an active layer 1300, a first metal layer 131, a second metal layer 132, a third metal layer 133, and a fourth metal layer 134 sequentially arranged in a direction away from the substrate 110. Specifically, the substrate 110 is stacked with a routing layer 120, a routing insulating dielectric layer 121, an active layer 1300, a gate insulating layer 1301, a first metal layer 131, a capacitor insulating layer 1312, a second metal layer 132, an interlayer insulating layer 1323, a third metal layer 133, a first planarizing layer 1334, a fourth metal layer 134, and a second planarizing layer 1345.

At least a portion of first metal layer 131 forms a gate metal layer, at least a portion of second metal layer 132 forms a capacitor metal layer, at least a portion of third metal layer 133 forms a source/drain metal layer, and at least a portion of fourth metal layer 134 forms an auxiliary metal layer.

The transistor is formed by the gate metal layer formed by the first metal layer 131, the source/drain metal layer formed by the third metal layer 133, and the active layer 1300 described below. The capacitor metal layer formed by the second metal layer 132 and at least a portion of the first metal layer 131 may form two plates of a capacitor, respectively. The fourth metal layer 134 may be connected to the third metal layer 133 to form an auxiliary metal layer of the third metal layer 133, where the auxiliary metal layer mainly connects the third metal layer 133 with the anode layer 1411 (or the cathode layer 1413) of the light emitting layer 140 to provide an electrical signal for driving the light emitting layer to emit light to the light emitting stack layer.

The signal lines are provided as data signal lines or scanning signal lines.

Therefore, the transistors and the capacitors are formed by the arrangement of the metal layers, and the laying of various signal lines can be realized by the arrangement of the metal layers, and the signal lines are connected with the driving circuit of the transistors, so that the normal driving function of the driving array layer 130 is ensured.

In one implementation, the signal lines include a plurality of data signal lines, the data signal lines extend along a first direction y, and adjacent data signal lines are spaced apart along a second direction x perpendicular to the first direction y.

The first signal line 1011 includes a first data signal line, the second signal line 1012 includes a second data signal line, and the connection winding 1013 includes a data connection winding.

As shown in fig. 2, each data signal line extends in a first direction y, and each data signal line is spaced in a second direction x, the first direction y and the second direction x being perpendicular to each other. The data signal lines close to the openings of the functional region 103 are disconnected by the openings to form a first data signal line and a second data signal line respectively located at two opposite sides of the functional region 103, and the data connection winding is connected with the first data signal line and the second data signal line to form a continuous data signal line.

It should be noted that "extend" herein should be broadly construed as extending generally in a certain direction. For example, the routing paths pass through the data signal lines of the opening, the first data signal line extends along the first direction y, and the connection winding 1013 near the functional region 103, although slightly deviated along the second direction x, still tends to extend along the first direction y toward the second data signal line, so that the routing paths are still considered to extend along the first direction y around the data signal lines of the functional region 103.

At least a portion of the first data signal line and the second data signal line are formed by the third metal layer 133 and the fourth metal layer 134 together.

The data signal line may be disposed on the third metal layer 133. In order to reduce the voltage drop of the data signal lines or facilitate the layout of the signal lines, an optional portion of the data signal lines is disposed on the fourth metal layer 134, and the third metal layer 133 and the fourth metal layer 134 are connected by an auxiliary connection structure 160. The auxiliary connection structure 160 may alternatively be a similar structure to the connection structure 150.

In this way, the connection between the winding layer 120 and the third metal layer 133 or the fourth metal layer 134 can be flexibly selected according to the specific structure of the data signal line forming the broken line near the functional region, so as to realize the connection of the broken line of the data signal line. Specifically, the following three embodiments may be included:

as a first alternative, as shown in fig. 3, at least a portion of the orthographic projection of the third metal layer 133 on the substrate 110 is located in the orthographic projection of the non-opening area 1422 on the substrate 110, the connection structure 150 is located between the third metal layer 133 and the winding layer 120, and the connection structure 150 connects the data connection winding in the winding layer 120 and the first data signal line or the second data signal line in the third metal layer 133.

As a second alternative, as shown in fig. 4a and 4b, an orthographic projection of at least a portion of the fourth metal layer 134 on the substrate 110 is located in an orthographic projection of the non-opening area 1422 on the substrate 110, the connection structure 150 is located between the fourth metal layer 134 and the winding layer 120, and the connection structure 150 connects the data connection winding in the winding layer 120 and the first data signal line or the second data signal line in the fourth metal layer 134.

As a third alternative, as shown in fig. 5, an orthographic projection of at least a portion of the third metal layer 133, at least a portion of the fourth metal layer 134, and the auxiliary connection structure 160 on the substrate 110 is located in an orthographic projection of the non-opening area 1422 on the substrate 110, the connection structure 150 is located between the third metal layer 133 and the winding layer 120, and the connection structure connects the data connection winding in the winding layer 120 and the first data signal line or the second data signal line in the third metal layer 133.

In one implementation, the signal lines further include a plurality of scanning signal lines, the scanning signal lines extend along the second direction x, and adjacent scanning signal lines are spaced apart from each other along a first direction y perpendicular to the second direction x.

The first signal line 1011 includes a first scanning signal line, the second signal line 1012 includes a second scanning signal line, and the connection winding 1013 includes a scanning signal winding.

As shown in fig. 9, the scanning signal lines extend in the second direction x and are arranged at intervals in the first direction y, similar to the arrangement of the data signal lines. The broken lines formed by the scanning signal lines near the openings of the functional region 103 are the first scanning signal line and the second scanning signal line, which are connected to the scanning connection winding line through the connection structure 150 to form a continuous scanning signal line.

At least a part of the first scan signal line and the second scan signal line are formed of the first metal layer 131 or the second metal layer 132.

In this way, the connection between the winding layer 120 and the first metal layer 131 or the second metal layer 132 can be flexibly selected according to the specific structure of the scanning signal line forming the broken line near the functional region 103, so as to realize the connection of the scanning signal line. Specifically, the following two embodiments may be included:

as a first alternative implementation, as shown in fig. 10, an orthographic projection of at least a portion of the first metal layer 131 on the substrate 110 is located in an orthographic projection of the non-opening area 1422 on the substrate 110, the connection structure 150 is located between the first metal layer 131 and the winding layer 120, and the connection structure 150 connects the scan connection winding in the winding layer 120 and the first scan signal line or the second scan signal line in the first metal layer 131.

As a second alternative implementation, as shown in fig. 11, an orthographic projection of at least a portion of the second metal layer 132 on the substrate 110 is located in an orthographic projection of the non-opening area 1422 on the substrate 110, the connection structure 150 is located between the second metal layer 132 and the winding layer 120, and the connection structure 150 connects the scan connection winding in the winding layer 120 and the first scan signal line or the second scan signal line in the second metal layer 132.

In one possible implementation, as shown with reference to FIGS. 3-5 or 10-11, the orthographic projection of at least a portion of the connecting winding 1013 on the substrate 110 does not exceed the orthographic projection of the non-open area 1422 on the substrate 110.

In this manner, the connecting winding 1013 is also covered by the non-open area 1422 to facilitate connection of the connecting structure 150 to the connecting winding 1013.

In one possible embodiment, as shown in fig. 2 and 9, the sum of the reactances of one of the connecting windings 1013 and the corresponding first and

second signal lines

1011 and 1012 is equal to the sum of the reactances of the other connecting winding 1013 and the corresponding first and

second signal lines

1011 and 1012.

Illustratively, as shown in fig. 2, the opening of the functional region 103 is a circular hole, and the signal line extends along the first direction y. In the second direction x, the connection winding of the signal line near the center of the circular hole is referred to as a first connection winding 10131, and the connection winding of the signal line far from the center of the circular hole is referred to as a second connection winding 10132. As can be seen from fig. 2, the first connection winding 10131 deviates in a direction relatively far from the center of the circular hole along the second direction x in the process of connecting the first signal line 1011 and the second signal line 1012 around the functional region 103. The second connection winding 10132 is deviated in the second direction x in a direction relatively close to the center of the circular hole in connecting the first signal line 1011 and the second signal line 1012 around the functional region 103.

Illustratively, as shown in fig. 9, the opening of the functional region 103 is rectangular, and the signal line extends along the second direction x. In the second direction x, the connection winding of the signal line near the center of the square hole is referred to as a first connection winding 10131, and the connection winding of the signal line far from the center of the square hole is referred to as a second connection winding 10132. As can be seen from fig. 9, since the broken connection point of the first connection winding 10131 and the signal line is relatively close to the center of the square hole, it deviates in the second direction x toward the direction relatively close to the center of the square hole in the process of connecting the first signal line 1011 and the second signal line 1012 around the functional region 103. Similarly, since the second connection winding 10132 is relatively far from the center of the square hole at the broken connection with the signal line, it deviates in the second direction x in the direction relatively far from the center of the square hole in the process of connecting the first signal line 1011 and the second signal line 1012 around the functional region.

Thus, by appropriately arranging the routing path of the connection winding 1013, the reactance between the signal lines in which the disconnection is formed is substantially equalized, and the reactance between the signal lines in which the disconnection is formed and the signal lines in which the disconnection is not formed is also substantially equalized.

In this way, the reactance balance among the plurality of signal lines can be realized by providing the winding path connecting the windings 1013, the uniformity of the display effect of the display area 101 is ensured, and the display effect of the display panel is optimized.

In one possible embodiment, the connection structure 150 includes a conductive connection post, one end of the conductive connection post away from the substrate 110 is electrically connected to the first signal line or the second signal line, and one end of the conductive connection post close to the substrate 110 is electrically connected to the winding 1013.

As shown in fig. 2 and 4a, a via hole penetrating through the display panel between the disconnection of the signal line and the connection winding may be formed by punching, and the via hole may be filled with a conductive material to form a conductive connection post. Therefore, the broken wire of the signal wire is electrically connected with the connecting winding wire through the conductive connecting column.

In one implementation, the connection structure 150 includes at least two conductive connection posts 1501 spaced apart in the thickness direction of the display panel, an intermediate layer 1502 connecting adjacent conductive connection posts 1501, the conductive connection post 1501 disposed away from the substrate 110 is electrically connected to a first signal line or a second signal line, and the conductive connection post 1501 disposed close to the substrate 110 is electrically connected to a winding.

When the thickness of the display panel 100 between the disconnection of the signal line near the functional region 103 and the connection winding 1013 is large and it is inconvenient to form a via hole on the display panel therebetween at one time, a step-shaped via hole may be formed along the thickness direction of the display panel 100.

The connection structure 150 is illustrated as including two conductive connection studs 1501 and an intermediate layer 1502.

As shown in fig. 2 and 4b, the capacitor insulating layer 1312 is formed by sequentially stacking layers on the substrate 110. Then, a lower via hole communicating with the connection winding 1013 of the winding layer 120 is opened in the thickness direction of the display panel on the surface of the capacitor insulating layer 1312. During the formation of the second metal layer 132, the intermediate layer 1502 and the conductive connection stud 1501 filled in the lower via are formed.

Thereafter, layers are sequentially stacked over the capacitor insulating layer 1312 to form a first planarizing layer 1334. An upper via hole communicating with the intermediate layer 1502 is formed in the surface of the first planarizing layer 1314 in the thickness direction of the display panel. In the process of forming the fourth metal layer 134, the conductive connection stud 1501 filled in the upper via is formed. In this way, the fourth metal layer 134 is electrically connected to the connection winding 1013 through the upper conductive connection stud 1501, the intermediate layer 1502, and the lower conductive connection stud 1501.

In one possible implementation, as shown with reference to fig. 2 and 9, the plurality of connection structures 150 are equidistant from the edge of the functional region 103.

The plurality of connecting structures 150 are disposed close to the edge of the functional region 103, so that the coverage area of the transition region 102 is relatively reduced, and the situation that the large-area transition region 102 is covered by the non-opening region 1422 is not caused, and thus the display effect is not affected.

Illustratively, as shown in fig. 2, the opening of the functional region 103 is a circular hole, and the plurality of connection structures 150 are located on concentric arcs around the circular hole. As shown in fig. 9, the opening of the functional region 103 is a square hole, and the plurality of connection structures 150 are located on a concentric square surrounding the square hole.

With this arrangement, the area of the transition region 102 can be reduced, and the display effect of the display panel 100 can be optimized.

In one implementation, as shown with reference to fig. 6, 7, 12, and 13, the active layer 1300 has a channel region 13001.

The active layer 1300 is provided with a communication region 13001 to realize disconnection and connection of the gate metal layer and the source and drain metal layers.

Since the connection winding 1013 forms the winding layer 120, it is located at a layer between the active layer 1300 and the substrate 110 in the structure of the display panel 100 arranged in a stack, and at least a part of the winding insulating medium layer 121 is located between the two, so as to ensure the mutual insulating isolation of the two. When the connection winding 1013 is covered by the active layer 1300, that is, the orthographic projection of the active layer 1300 on the substrate 110 covers the orthographic projection of the connection winding 1013 on the substrate 110, the active layer 1300, the connection winding 1013 and the capacitance metal layer theoretically form a structure of a double gate transistor.

Based on this, the distribution relationship of the connection wiring and the active layer may include the following two embodiments:

as a first alternative embodiment, as shown in fig. 6 and 12, an orthogonal projection of the channel region 13001 on the substrate 110 and an orthogonal projection of the connection wire 1013 on the substrate 110 do not coincide with each other.

As a second alternative embodiment, as shown in fig. 7 and 13, an orthographic projection of the channel region 13001 on the substrate 110 and an orthographic projection of the connection winding 1013 on the substrate 110 at least partially coincide, and an insulating medium layer located between the connection winding 1013 and the active layer 1300 is a high dielectric constant layer. Illustratively, the high dielectric constant layer herein may include, but is not limited to, hafnium oxide compounds doped with aluminum, zirconium, silicon, and lanthanum.

By adopting the two optional embodiments, no matter the connection winding 1013 is prevented from avoiding the channel region 13001, or the winding insulating medium layer 121 is formed into a high-dielectric-constant layer adopting a high-dielectric-constant medium, the structure of the double-gate transistor formed by the active layer 1300, the connection winding 1013 and the capacitance metal layer can be effectively prevented, and the influence on the driving process of the driving array layer 130 is prevented; in addition, this does not affect the display area 101 and does not affect the display effect of the display panel 100.

In a second aspect, an embodiment of the present application provides a display device, including the display panel 100 described above.

The display device may be a mobile or fixed terminal such as a mobile phone, a television, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a Personal Digital Assistant (PDA), a virtual reality device, and the like.

Other technical features of the display device are the same as those of the display panel 100 described above, and the same technical effects can be achieved, which are not described in detail herein.

The display device provided by the embodiment of the present application is manufactured by the display panel 100. The display panel comprises a display area 101, a transition area 102 and a functional area 103. The display panel 100 further includes a plurality of signal lines, at least some of the signal lines include a first signal line 1011, a second signal line 1012 and a connection winding 1013, and the first signal line 1011 and the second signal line 1012 are respectively located at two opposite sides of the functional region 103 and connected by the connection winding 1013. The first signal line 1011 and the second signal line 1012 are located in the driving array layer 130, and the connection winding 1013 is located in the winding layer 120; the connecting winding 1013 and the first signal line 1011, and the connecting winding 1013 and the second signal line 1012 are connected by the corresponding connecting structure 150, the connecting structure 150 is located in the transition region 102, and the orthographic projection of the connecting structure 150 on the substrate 110 does not exceed the orthographic projection of the non-opening region 1422 on the substrate 110. Thus, the connection structure between the first signal line 1011 and the second signal line 1012 and the connection winding 1013 is covered by the non-opening region 1422, and the connection winding 1013 is disposed between the driving array layer 130 and the substrate 110, so that the display panel 100 has the connection structure 150 and the reflection degree of the position where the connection winding 1013 is disposed on the display panel to the ambient light and other light, and the reflection degree of other regions on the display panel 100 to the ambient light and other light is the same, thereby avoiding the problem of the display effect difference between the transition region 102 and the display region 101, the transition region 102 and the functional region 103 of the display panel 100 can exhibit uniform display effects at various viewing angles, and the display panel 100 has no difference between the display effects in the image display and the dark state, thereby improving the display effects of the display panel 100 and the display device using the display panel 100.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel is characterized by comprising a display area, a transition area and a function area, wherein the transition area is positioned between the display area and the function area, and the transition area is respectively adjacent to the display area and the function area;

the display panel further comprises a plurality of signal lines, at least part of the signal lines comprise first signal lines, second signal lines and connecting winding lines, and the first signal lines and the second signal lines are respectively positioned at two opposite sides of the functional area and are connected through the connecting winding lines;

2. The display panel according to claim 1, wherein the driving array layer comprises an active layer, a first metal layer, a second metal layer, a third metal layer and a fourth metal layer sequentially arranged in a direction away from the substrate;

at least part of the first metal layer forms a grid metal layer, at least part of the second metal layer forms a capacitance metal layer, at least part of the third metal layer forms a source drain metal layer, and at least part of the fourth metal layer forms an auxiliary metal layer;

the signal lines are set as data signal lines or scanning signal lines.

3. The display panel according to claim 2, wherein the signal lines include a plurality of data signal lines, the first signal lines include first data signal lines, the second signal lines include second data signal lines, and the connection wirings include data connection wirings;

4. The display panel according to claim 2, wherein the signal lines include a plurality of scanning signal lines, the first signal line includes a first scanning signal line, the second signal line includes a second scanning signal line, and the connection wiring includes a scanning signal connection wiring;

5. The display panel according to claim 1, wherein an orthogonal projection of at least a part of the connection wiring on the substrate does not exceed an orthogonal projection of the non-opening area on the substrate.

6. The display panel according to any one of claims 1 to 5, wherein a sum of reactances of one of the connection winding wires and the corresponding first signal line and second signal line is equal to a sum of reactances of the other of the connection winding wires and the corresponding first signal line and second signal line.

7. The display panel according to any one of claims 1 to 5, wherein the connection structure comprises a conductive connection post, one end of the conductive connection post away from the substrate is electrically connected to the first signal line or the second signal line, and one end of the conductive connection post close to the substrate is electrically connected to the connection winding;

8. The display panel according to any one of claims 1 to 5, wherein a plurality of the connection structures are equidistant from a straight line of an edge of the functional region.

9. The display panel according to any one of claims 2 to 4, wherein the active layer has a channel region; the orthographic projection of the channel region on the substrate and the orthographic projection of the connecting winding on the substrate are not overlapped.

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