Display panel and display device

Abstract

The present application provides a display panel and a display device, which relate to the field of display technology and aim to solve the problem of poor display effect of the display panel. The display panel includes a plurality of signal lines, at least some of which include a first signal line, a second signal line, and a connecting winding. The first signal line and the second signal line are respectively located on opposite sides of a functional area and are connected by a connecting winding. The display panel includes a substrate, a winding layer, a drive array layer, and a pixel defining layer stacked in sequence, and the pixel defining layer is formed with an opening area and a non-opening area. The first signal line and the second signal line are located in the drive array layer, and the connecting winding is located in the winding layer. The connecting winding and the first signal line, and the connecting winding and the second signal line are respectively connected by corresponding connecting structures. The connecting structure is located in the transition area, and the orthographic projection of the connecting structure on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. The present application can improve the display effect of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the rapid development of electronic devices, users have higher and higher requirements for screen-to-body ratio, and full-screen technology combining main and secondary screens has emerged.

[0003] In full-screen technology, the display panel consists of a main screen area and a secondary screen area. The main screen area is used for illumination and display. The secondary screen area is used for under-screen technology in a specific area and forms an opening in the display panel. The opening in the secondary screen area causes various signal routings in the main screen area to break at the opening. In related technologies, wiring is arranged around the opening, and the wiring is used to connect the broken wires at the corresponding openings in the main screen area one by one to ensure normal illumination and display functions of the main screen area.

[0004] However, the display effect of the display panel in the above technical solution is poor. Summary of the Invention

[0005] 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.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A first aspect of an embodiment of the present application provides a display panel, comprising a display area, a transition area, and a functional area, wherein 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.

[0008] The display panel further includes a plurality of signal lines, at least some of which include a first signal line, a second signal line, and a connecting winding. The first signal line and the second signal line are respectively located on opposite sides of the functional area and are connected by the connecting winding.

[0009] The display panel includes a substrate, a winding layer, a driving array layer and a pixel defining layer stacked in sequence, the pixel defining layer is formed with an opening area and a non-opening area; the first signal line and the second signal line are located in the driving array layer, and the connecting winding is located in the winding layer; the connecting winding and the first signal line are connected, and the connecting winding and the second signal line are connected respectively by corresponding connecting structures, the connecting structure is located in the transition area, and the orthographic projection of the connecting structure on the substrate does not exceed the orthographic projection of the non-opening area on the substrate.

[0010] An embodiment of the present application provides a display panel, which includes a display area, a transition area, and a functional area. The display panel also includes a plurality of signal lines, at least some of which include a first signal line, a second signal line, and a connecting winding. The first signal line and the second signal line are respectively located on opposite sides of the functional area and are connected by the connecting winding. The first signal line and the second signal line are located in the drive array layer, and the connecting winding is located in the winding layer. The connecting winding and the first signal line, and the connecting winding and the second signal line are respectively connected by corresponding connecting structures. The connecting structure is located in the transition area, and the orthographic projection of the connecting structure on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. In this way, the connection structure between the first signal line, the second signal line and the connecting winding is covered by the non-opening area, and the connecting winding is arranged between the driving array layer and the substrate, so that the degree of reflection of ambient light and other light at the position where the connection structure and the connecting winding are arranged on the display panel is the same as the degree of reflection of ambient light and other light by other areas on the display panel, avoiding the problem of differentiated display effects between the transition area and the display area. The display area, transition area and functional area of the display panel present a uniform display effect at all viewing angles, and there is no difference in the display effect of the display panel in the picture display and dark state, thereby improving the display effect of the display panel and the display device using the display panel.

[0011] In one feasible 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, which are sequentially arranged in a direction away from the substrate.

[0012] At least part of the first metal layer forms a gate metal layer, at least part of the second metal layer forms a capacitor metal layer, at least part of the third metal layer forms a source and drain metal layer, and at least part of the fourth metal layer forms an auxiliary metal layer.

[0013] The signal lines are configured as data signal lines or scan signal lines.

[0014] In this way, transistors and capacitors are formed by setting up each metal layer, and various signal lines can be laid out through the arrangement of each metal layer. The signal lines are connected to the driving circuit of the transistor to ensure the normal driving function of the driving array layer.

[0015] In one possible implementation, the signal line includes several data signal lines.

[0016] 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.

[0017] At least a portion of the first data signal line and the second data signal line is formed by the third metal layer and the fourth metal layer.

[0018] In this way, the winding layer is connected to the third metal layer or the fourth metal layer through the connection structure, thereby realizing the connection of the broken wires of the data signal line close to the functional area.

[0019] In one possible implementation, the signal line includes a plurality of scan signal lines, the first signal line includes a first scan signal line, the second signal line includes a second scan signal line, and the connecting winding includes a scan signal connecting winding.

[0020] At least a portion of the first scan signal line and the second scan signal line is formed by the first metal layer or the second metal layer.

[0021] In this way, the winding layer is connected to the first metal layer or the second metal layer through the connection structure, thereby realizing the connection of the broken line of the scanning signal line close to the functional area.

[0022] In one feasible implementation, the orthographic projection of at least part of the connecting wires on the substrate does not exceed the orthographic projection of the non-opening area on the substrate.

[0023] In this way, the connecting wire is also covered by the non-opening area, which facilitates the connection between the connecting structure and the connecting wire.

[0024] In one feasible embodiment, the sum of the reactances of one connecting winding and the corresponding first signal line and the second signal line is equal to the sum of the reactances of another connecting winding and the corresponding first signal line and the second signal line.

[0025] In this way, reactance balance between multiple signal lines can be achieved by setting the winding path of the connecting winding, thereby ensuring the uniformity of the display effect of the display area and optimizing the display effect of the display panel.

[0026] In one feasible embodiment, the connection structure includes a conductive connection column, an end of the conductive connection column away from the substrate is electrically connected to the first signal line or the second signal line, and an end of the conductive connection column close to the substrate is electrically connected to the connecting winding.

[0027] Alternatively, the connection structure includes at least two conductive connection posts spaced apart along the thickness direction of the display panel, an intermediate layer connecting adjacent conductive connection posts, the conductive connection posts arranged away from the substrate are electrically connected to the first signal line or the second signal line, and the conductive connection posts arranged close to the substrate are electrically connected to the connecting winding.

[0028] In this way, according to the thickness of the display panel between the broken signal lines and the connecting windings near the functional area, it is possible to flexibly choose to form a connection structure through a one-time via or a stepped via, so as to improve the reliability of the electrical connection between the broken signal lines and the connecting windings near the functional area.

[0029] In a feasible embodiment, the straight-line distances between the plurality of connection structures and the edge of the functional area are equal.

[0030] This configuration can reduce the area of the transition zone and optimize the display effect of the display panel.

[0031] In a feasible implementation, the active layer has a channel region, and an orthographic projection of the channel region on the substrate and an orthographic projection of the connecting wire on the substrate do not overlap with each other.

[0032] This arrangement can effectively prevent the active layer and the connecting wires from forming a double-gate transistor structure, thus preventing the driving process of the drive array layer from being affected. Furthermore, this arrangement will not affect the display area or the display effect of the display panel.

[0033] A second aspect of the embodiments of the present application provides a display device including the above-mentioned display panel.

[0034] The display device provided in an embodiment of the present application includes the above-mentioned display panel. The display panel includes a display area, a transition area and a functional area. The display panel also includes a plurality of signal lines, at least some of which include a first signal line, a second signal line and a connecting winding, and the first signal line and the second signal line are respectively located on opposite sides of the functional area and are connected by the connecting winding. The first signal line and the second signal line are located in the driving array layer, and the connecting winding is located in the winding layer; the connecting winding and the first signal line, and the connecting winding and the second signal line are respectively connected by corresponding connecting structures, the connecting structure is located in the transition area, and the orthographic projection of the connecting structure on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. In this way, the connection structure between the first signal line, the second signal line and the connecting winding is covered by the non-opening area, and the connecting winding is arranged between the driving array layer and the substrate, so that the degree of reflection of ambient light and other light at the position where the connection structure and the connecting winding are arranged on the display panel is the same as the degree of reflection of ambient light and other light by other areas on the display panel, avoiding the problem of differentiated display effects between the transition area and the display area. The display area, transition area and functional area of the display panel present a uniform display effect at all viewing angles, and there is no difference in the display effect of the display panel in the picture display and dark state, thereby improving the display effect of the display panel and the display device using the display panel.

[0035] The construction of the present application as well as other objects and advantageous effects will become more apparent through the description of the preferred embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the present application;

[0038] Figure 2 for Figure 1 A local enlarged view of M;

[0039] Figure 3 for Figure 2 A structural diagram of the AA view;

[0040] Figure 4a for Figure 2 Another structural diagram of the AA view;

[0041] Figure 4b for Figure 2 Another structural diagram of the AA view;

[0042] Figure 5 for Figure 2 Another structural diagram of the AA view;

[0043] Figure 6 for Figure 2 A structural schematic diagram of the BB view;

[0044] Figure 7 for Figure 2 Another structural schematic diagram of the BB direction view;

[0045] Figure 8 Another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0046] Figure 9 for Figure 8 A local enlarged view of N points;

[0047] Figure 10 for Figure 9 A structural diagram of a CC view;

[0048] Figure 11 for Figure 9 Another structural diagram of the CC view;

[0049] Figure 12 for Figure 9 A structural diagram of the DD view;

[0050] Figure 13 for Figure 9 Another structural schematic diagram of the DD view.

[0051] Description of reference numerals:

[0052] 100-display panel;

[0053] 101-display area; 102-transition area; 103-functional area; 104-non-display area;

[0054] 1011 - first signal line; 1012 - second signal line; 1013 - connecting wire;

[0055] 10131-first connecting winding; 10132-second connecting winding;

[0056] 110-substrate;

[0057] 120-winding layer;

[0058] 121-winding insulation dielectric layer;

[0059] 130- driver array layer;

[0060] 1300 - active layer; 13001 - channel region; 1301 - gate insulating layer; 131 - first metal layer;

[0061] 1312 - capacitor insulation layer; 132 - second metal layer; 1323 - interlayer insulation layer; 133 - third metal layer; 1334 - first planarization layer; 134 - fourth metal layer; 1345 - second planarization layer;

[0062] 140-luminescent layer;

[0063] 141 - pixel layer; 1411 - anode layer; 1412 - organic light-emitting layer; 1413 - cathode layer; 142 - pixel defining layer; 1421 - opening area; 1422 - non-opening area;

[0064] 150-connection structure; 1501-conductive connection column; 1502-middle layer;

[0065] 160-Auxiliary connection structure. DETAILED DESCRIPTION

[0066] In the related art, the display panel includes a substrate, a drive array layer and a light-emitting layer stacked in sequence. The display panel may include a main screen area and a sub-screen area arranged adjacent to each other, and the drive array layer located in the main screen area is provided with transistors, capacitors and a variety of signal lines. Among them, the signal lines may include scan signal lines, data signal lines, ground signal lines and reference voltage signal lines. The display panel located in the sub-screen area has an opening, which is used to cooperate with under-screen functional devices such as an under-screen camera, under-screen fingerprint recognition and under-screen distance sensor to realize specific auxiliary functions of the display panel. The opening in the sub-screen area causes the signal line of the main screen area to be broken at the opening, and it is necessary to set a winding around the opening to connect the broken lines one by one. This part of the winding will be distributed in the main screen area near the opening. Since the above-mentioned additional winding is set in the main screen area near the opening, there is a difference in the distribution density of the signal lines in the main screen area near the opening and the main screen areas in other areas. However, the signal routing density is different, and the degree of reflection of ambient light or other light is different, which causes the display effect of the main screen area near the opening and the main screen area in other areas to be different, affecting the overall display effect of the display panel.

[0067] In response to the above 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 includes a plurality of signal lines, at least some of which include a first signal line, a second signal line, and a connecting winding. The first signal line and the second signal line are respectively located on opposite sides of the functional area and are connected by the connecting winding. The first signal line and the second signal line are located in the driving array layer, and the connecting winding is located in the winding layer; the connecting winding and the first signal line, and the connecting winding and the second signal line are respectively connected by corresponding connecting structures. The connecting structure is located in the transition area, and the orthographic projection of the connecting structure on the substrate does not exceed the orthographic projection of the non-opening area on the substrate. In this way, the connection structure between the first signal line, the second signal line and the connecting winding is covered by the non-opening area, and the connecting winding is arranged between the driving array layer and the substrate, so that the degree of reflection of ambient light and other light at the position where the connection structure and the connecting winding are arranged on the display panel is the same as the degree of reflection of ambient light and other light by other areas on the display panel, thereby avoiding the problem of differentiated display effects between the transition area and the display area. The display area, transition area and functional area of the display panel can present a uniform display effect at all viewing angles, and there is no difference in the display effect of the display panel in the picture display and dark state, thereby improving the display effect of the display panel and the display device using the display panel.

[0068] In order to make the purpose, 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 in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0069] Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the present application; Figure 2 for Figure 1 A local enlarged view of M; Figure 3 for Figure 2 A structural diagram of the AA view; Figure 4a for Figure 2 Another structural diagram of the AA view; Figure 4b for Figure 2 Another structural diagram of the AA view; Figure 5 for Figure 2 Another structural diagram of the AA view; Figure 6 for Figure 2 A structural schematic diagram of the BB view; Figure 7 for Figure 2 Another structural schematic diagram of the BB direction view; Figure 8 Another structural schematic diagram of a display panel provided in an embodiment of the present application; Figure 9 for Figure 8 A local enlarged view of N points; Figure 10 for Figure 9 A structural diagram of a CC view; Figure 11 for Figure 9 Another structural diagram of the CC view; Figure 12 for Figure 9 A structural diagram of the DD view; Figure 13 for Figure 9 Another structural schematic diagram of the DD view.

[0070] Reference Figures 1-13As shown, in the first aspect, an embodiment of the present application provides a display panel 100, including a display area 101, a transition area 102, a functional area 103 and a non-display area 104, the non-display area 104 surrounds the 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.

[0071] The display panel 100 further includes a plurality of signal lines, at least some of which include a first signal line 1011 , a second signal line 1012 and a connecting winding 1013 . The first signal line 1011 and the second signal line 1012 are respectively located on opposite sides of the functional area 103 and are connected by the connecting winding 1013 .

[0072] 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 stacked in sequence. 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 the connecting winding 1013 forms 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 respectively by corresponding connecting structures 150. The connecting structure 150 is located in the transition area 102, and the orthographic projection of the connecting structure 150 on the substrate 110 does not exceed the orthographic projection of the non-opening area 1422 on the substrate 110.

[0073] The display panel 100 may be an organic light emitting diode display panel and may include a substrate 110 , a driving array layer 130 , and a light emitting layer 140 , which are sequentially stacked.

[0074] The drive array layer 130 is provided with a drive unit, which includes transistors, capacitors, and various signal lines. The signal lines may include scan signal lines, data signal lines, ground signal lines, and reference voltage signal lines. Each signal line includes multiple signal lines, and the multiple signal lines of each signal line are spaced apart along a predetermined direction within the drive array layer 130.

[0075] The light-emitting layer 140 includes a pixel defining layer 142 and a plurality of pixel layers 141. The number of pixel layers 141 and the number of driving units in the drive array layer 130 can be equal, and the plurality of pixel layers 141 are arranged in a one-to-one correspondence with the plurality of driving units. Specifically, a light-emitting stack layer is generally provided 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 stacked in sequence. The driving unit in the drive array layer 130 is connected to the anode layer 1411 or the cathode layer 1413 to provide an electrical signal to the light-emitting stack layer. When an electrical signal is written into the light-emitting stack layer, the holes in the anode layer 1411 are transferred to the organic light-emitting layer 1412 via the hole transport layer and the hole injection layer, and the electrons in the cathode layer 1413 are transferred to the organic light-emitting layer 1412 via the electron transport layer and the electron injection layer. The electrons and holes combine in the organic light-emitting layer 1412 and generate photoelectrons, causing the pixel layer 141 to emit light.

[0076] The pixel-defining layer 142 is formed with an opening region 1421 and a non-opening region 1422. The pixel layer 141 is located within the opening region 1421. In some embodiments, the cathode layer 1413 or the anode layer 1411 within the pixel layer 141, as well as other portions of the light-emitting stack layer, may extend into the non-opening region 1422. The pixel-defining layer 142 is typically made of a black, light-absorbing resin material to prevent light from mixing between adjacent pixel layers.

[0077] like Figure 1 and Figure 8 As shown, the display area 101 occupies most of the display panel 100 and is used for emitting light and displaying images. A functional area 103 is formed in a specific area on the display panel 100. This area is used to cooperate with under-screen functional devices such as the under-screen camera, under-screen fingerprint recognition, and under-screen proximity sensor to realize specific auxiliary functions of the display panel. The functional area 103 is connected to the display area 101 via a transition area 102.

[0078] It is understandable that in order to ensure the uniformity of the display effect of the display panel 100, the functional area 103 can also emit light and display images. Due to the design of the under-screen technology, the functional area 103 also needs to meet a certain light transmittance. Therefore, the display panel 100 located in the functional area 103 usually ensures the light transmittance requirement by opening holes. And according to the actual light transmittance or design requirements, the openings in the functional area 103 can be as follows: Figure 1 The hole shown is round, but it can also be Figure 8 The hole shown is a square hole; the number of holes can be one or more; the position of the holes can be as follows Figure 1 and Figure 8As shown, it is located in the middle of the display panel 100, but may also be located near the edge of the display panel 100. In the embodiment of the present application, the shape, number and position of the openings in the functional area 103 are not limited.

[0079] like Figure 2 and Figure 9 As shown, due to the opening design of the functional area 103, some signal lines within the drive array layer 130 of the display area 101 are broken near the opening in the functional area 103. The broken signal line is a first signal line 1011 on one side of the functional area 103, and the broken signal line is a second signal line 1012 on the other side of the functional area 103. The first signal line 1011 and the second signal line 1012 are located on opposite sides of the functional area 103 and extend in the same direction.

[0080] 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 connecting wire 1013 within the transition region 102. The connection method between the first signal line 1011 and the connecting wire 1013 is the same as the connection method between the second signal line 1012 and the connecting wire 1013. Therefore, only the connection method between the first signal line 1011 and the connecting wire 1013 is used as an example for description.

[0081] Specifically, refer to Figure 2-Figure 5 or Figures 9-11 As shown, a pixel defining layer 142 is disposed in the transition region 102 .

[0082] The orthographic projection of the connection structure 150 on the substrate 110 does not extend beyond the orthographic projection of the non-opening area 1422 on the substrate 110. The end of the connection structure 150 away from the substrate 110 is connected to the first signal line 1011 (formed by a portion of the metal layer described below) within the drive array layer 130. The end of the connection structure 150 closer to the substrate 110 is connected to the connection winding 1013 within the winding layer 120. Thus, the connection winding 1013 and the first signal line 1011 are connected via the connection structure 150.

[0083] The connecting wire 1013 and the second signal line 1012 are connected by another connecting structure 150, similar to the connection method between the connecting wire 1013 and the first signal line 1011. In this way, the first signal line 1011 is connected to the second signal line 1012 through the connecting wire 1013, completing the connection of the broken signal line near the functional area 103 and ensuring the continuity of the signal transmission line.

[0084] It is worth noting that, since the connecting winding 1013 is located between the drive array layer 130 and the substrate 110, the connecting winding is shielded by the drive array layer, so that the degree of reflection of ambient light and other light at the location where the connecting winding 1013 is provided on the display panel is the same as the degree of reflection of ambient light and other light at other areas on the display panel, and there will be no problem of display differentiation between the connecting winding location in the transition area and the display area. Therefore, the connecting winding 1013 can only have the portion connected to the connecting structure 150 located in the transition area 102. The embodiment of the present application does not limit the other portions of the connecting winding 1013, which can be located in the transition area 102 or extend out of the transition area 102 and into the display area 101. The connecting winding 1013 can be made of a transparent or opaque material, and can be made of a low-impedance material to improve its signal transmission effect.

[0085] It can be understood that since the position setting of the connecting winding 1013 will not cause the display differentiation problem between the connecting winding position in the transition area and the display area; moreover, the connecting structure 150 is also covered by the non-opening area 1422, which will not cause the display differentiation problem between the connecting structure 150 position in the transition area and the display area; therefore, the transition area 102 can optionally only cover the part of the connecting structure 150 as the non-opening area 1422, and the other areas are the opening area 1421 and the pixel layer 141 is arranged.

[0086] In the display panel 100 provided in the embodiment of the present application, the connection structure between the first signal line 1011, the second signal line 1012 and the connecting winding 1013 is covered by the non-opening area 1422, and the connecting winding 1013 is arranged between the driving array layer 130 and the substrate 110, so that the degree of reflection of ambient light and other light at the position having the connection structure 150 and the connecting winding 1013 on the display panel 100 is the same as the degree of reflection of ambient light and other light at other areas on the display panel 100, thereby avoiding the problem of differentiated display effects between the transition area 102 and the display area 101. The display area 101, the transition area 102 and the functional area 103 of the display panel 100 can present a uniform display effect at all viewing angles, and there is no difference in the display effect of the display panel 100 in the picture display state and the dark state, thereby improving the display effect of the display panel 100 and the display device using the display panel 100.

[0087] In one possible implementation, referring to Figure 3-Figure 7As shown, the drive 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, which are sequentially arranged in a direction away from the substrate 110. Specifically, the winding layer 120, the winding insulating dielectric layer 121, the active layer 1300, the gate insulating layer 1301, the first metal layer 131, the capacitor insulating layer 1312, the second metal layer 132, the interlayer insulating layer 1323, the third metal layer 133, the first planarization layer 1334, the fourth metal layer 134, and the second planarization layer 1345 are stacked on the substrate 110.

[0088] At least a portion of the first metal layer 131 forms a gate metal layer, at least a portion of the second metal layer 132 forms a capacitor metal layer, at least a portion of the third metal layer 133 forms a source / drain metal layer, and at least a portion of the fourth metal layer 134 forms an auxiliary metal layer.

[0089] Among them, the gate metal layer formed by the first metal layer 131, the source and drain metal layer formed by the third metal layer 133, and the active layer 1300 described below form a transistor. The capacitor metal layer formed by the second metal layer 132 and at least a portion of the first metal layer 131 can respectively form two plates of the capacitor. The fourth metal layer 134 can be connected to the third metal layer 133 to form an auxiliary metal layer of the third metal layer 133. The auxiliary metal layer mainly connects the third metal layer 133 to the anode layer 1411 (or cathode layer 1413) of the light-emitting layer 140 to provide an electrical signal to the light-emitting stack layer to drive it to emit light.

[0090] The signal lines are set as data signal lines or scanning signal lines.

[0091] In this way, transistors and capacitors are formed by setting up each metal layer, and various signal lines can be laid out through the arrangement of each metal layer. The signal lines are connected to the driving circuits of the transistors to ensure the normal driving function of the driving array layer 130.

[0092] In a feasible embodiment, the signal line includes 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.

[0093] 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 wiring 1013 includes a data connection wiring.

[0094] like Figure 2As shown, each data signal line extends along a first direction y and is spaced apart in a second direction x, with the first direction y and the second direction x being perpendicular to each other. The openings in the functional area 103 disconnect the data signal lines near the openings, forming first and second data signal lines located on opposite sides of the functional area 103. A data connection wire connects the first and second data signal lines to form a continuous data signal line.

[0095] It's worth noting that the term "extend" here should be broadly understood to mean generally extending in a certain direction. For example, regarding the data signal lines whose routing paths pass through the openings, the first data signal line extends along the first direction y. While the connecting wire 1013 near the functional area 103 deviates slightly in the second direction x, it still tends to extend along the first direction y toward the second data signal line. Therefore, the data signal lines whose routing paths pass through the functional area 103 are still considered to generally extend in the first direction y.

[0096] 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 .

[0097] The data signal lines may be disposed on the third metal layer 133. To reduce the voltage drop of the data signal lines or facilitate the layout of the signal lines, some of the data signal lines may be disposed on the fourth metal layer 134. The third metal layer 133 and the fourth metal layer 134 are connected via an auxiliary connection structure 160. The auxiliary connection structure 160 may have a structure similar to the connection structure 150.

[0098] 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 a break near the functional area to achieve the connection of the broken data signal line. Specifically, the following three implementations can be included:

[0099] As a first optional implementation, Figure 3 As shown, at least part of the orthographic projection of the third metal layer 133 on the substrate 110 is located within the orthographic projection of the non-opening area 1422 on the substrate 110, and the connection structure 150 is located between the third metal layer 133 and the winding layer 120. 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.

[0100] As a second optional implementation, Figure 4a and Figure 4bAs shown, at least part of the orthographic projection of the fourth metal layer 134 on the substrate 110 is located within the orthographic projection of the non-opening area 1422 on the substrate 110, and the connection structure 150 is located between the fourth metal layer 134 and the winding layer 120. 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.

[0101] As a third optional implementation, Figure 5 As shown, the orthographic projections of at least part of the third metal layer 133, at least part of the fourth metal layer 134 and the auxiliary connection structure 160 on the substrate 110 are located within the orthographic projection of the non-opening area 1422 on the substrate 110, and the connection structure 150 is located between the third metal layer 133 and the winding layer 120. 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.

[0102] In a feasible embodiment, 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 along a first direction y perpendicular to the second direction x.

[0103] 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 wiring 1013 includes a scanning signal wiring.

[0104] like Figure 9 As shown, similar to the arrangement of the data signal lines, the scan signal lines extend along the second direction x and are spaced apart in the first direction y. The scan signal lines formed near the openings in the functional area 103 are broken into first and second scan signal lines, which are connected via the connection structure 150 and the scan connection wires to form a continuous scan signal line.

[0105] At least a portion of the first scan signal line and the second scan signal line is formed by the first metal layer 131 or the second metal layer 132 .

[0106] 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 a break near the functional area 103 to achieve the connection of the broken scanning signal line. Specifically, the following two implementations can be included:

[0107] As a first optional implementation, Figure 10As shown, at least part of the orthographic projection of the first metal layer 131 on the substrate 110 is located within the orthographic projection of the non-opening area 1422 on the substrate 110, and the connection structure 150 is located between the first metal layer 131 and the winding layer 120. The connection structure 150 connects the scanning connection winding in the winding layer 120 and the first scanning signal line or the second scanning signal line in the first metal layer 131.

[0108] As a second optional implementation, Figure 11 As shown, at least part of the orthographic projection of the second metal layer 132 on the substrate 110 is located within the orthographic projection of the non-opening area 1422 on the substrate 110, and the connection structure 150 is located between the second metal layer 132 and the winding layer 120. 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.

[0109] In one possible implementation, referring to Figure 3-Figure 5 or Figure 10-11 As shown, the orthographic projection of at least a portion of the connecting wire 1013 on the substrate 110 does not exceed the orthographic projection of the non-opening area 1422 on the substrate 110 .

[0110] In this way, the connecting wire 1013 is also covered by the non-opening area 1422 , which facilitates the connection between the connecting structure 150 and the connecting wire 1013 .

[0111] In one possible implementation, referring to Figure 2 and Figure 9 As shown, the sum of the reactances of one connecting winding 1013 and the corresponding first signal line 1011 and second signal line 1012 is equal to the sum of the reactances of the other connecting winding 1013 and the corresponding first signal line 1011 and second signal line 1012 .

[0112] For example, Figure 2 As shown, the opening of the functional area 103 is a circular hole, and the signal line extends along the first direction y. In the second direction x, the connecting wire of the signal line close to the center of the circular hole is called the first connecting wire 10131, and the connecting wire of the signal line far from the center of the circular hole is called the second connecting wire 10132. Figure 2 It can be seen that the first connecting wire 10131 deviates in a direction relatively away from the center of the circular hole along the second direction x while connecting the first signal line 1011 and the second signal line 1012 around the functional area 103. The second connecting wire 10132 deviates in a direction relatively close to the center of the circular hole along the second direction x while connecting the first signal line 1011 and the second signal line 1012 around the functional area 103.

[0113] For example, Figure 9As shown, the opening of the functional area 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 close to the center of the square hole is called the first connection winding 10131, and the connection winding of the signal line far from the center of the square hole is called the second connection winding 10132. Figure 9 It can be seen that because the disconnected connection point between the first connecting wire 10131 and the signal line is relatively close to the center of the square hole, it deviates along the second direction x in a direction relatively close to the center of the square hole while connecting the first signal line 1011 and the second signal line 1012 around the functional area 103. Similarly, because the disconnected connection point between the second connecting wire 10132 and the signal line is relatively far from the center of the square hole, it deviates along the second direction x in a direction relatively far from the center of the square hole while connecting the first signal line 1011 and the second signal line 1012 around the functional area.

[0114] Therefore, by properly setting the routing path of the connecting winding 1013, the reactance between the signal lines that form a break is roughly balanced, and the reactance between the signal lines that form a break and the signal lines that do not form a break is also roughly balanced.

[0115] In this way, reactance balance between multiple signal lines can be achieved by setting a winding path for the connecting winding 1013, thereby ensuring the uniformity of the display effect of the display area 101 and optimizing the display effect of the display panel.

[0116] In one possible embodiment, the connection structure 150 includes a conductive connection column, whose end away from the substrate 110 is electrically connected to the first signal line or the second signal line, and whose end close to the substrate 110 is electrically connected to the connection winding 1013.

[0117] Among them, combined Figure 2 and Figure 4a As shown, a via hole can be formed on the display panel between the broken signal line and the connecting winding by punching, and a conductive material can be filled in the via hole to form a conductive connecting column. In this way, the broken signal line is electrically connected to the connecting winding through the conductive connecting column.

[0118] In one feasible embodiment, the connection structure 150 includes at least two conductive connection columns 1501 spaced apart along the thickness direction of the display panel, and an intermediate layer 1502 connecting adjacent conductive connection columns 1501. The conductive connection column 1501 arranged away from the substrate 110 is electrically connected to the first signal line or the second signal line, and the conductive connection column 1501 arranged close to the substrate 110 is electrically connected to the connection winding.

[0119] Among them, when the thickness of the display panel 100 between the broken signal line near the functional area 103 and the connecting winding 1013 is large, it is not convenient to form a via hole on the display panel between the two at one time, a stepped via hole can be opened along the thickness direction of the display panel 100.

[0120] The connection structure 150 including two conductive connection pillars 1501 and an intermediate layer 1502 is taken as an example for description.

[0121] Combine Figure 2 and Figure 4b As shown, various layers are sequentially stacked on substrate 110 to form capacitor insulating layer 1312. Subsequently, lower vias are opened on the surface of capacitor insulating layer 1312 along the thickness direction of the display panel, connecting to the connection wire 1013 of the winding layer 120. During the formation of second metal layer 132, intermediate layer 1502 and conductive connection pillars 1501 filling the lower vias are formed.

[0122] Subsequently, various layers are sequentially stacked on the capacitor insulating layer 1312 to form the first planarization layer 1334. An upper via hole connecting to the intermediate layer 1502 is provided on the surface of the first planarization layer 1314 along the thickness of the display panel. During the formation of the fourth metal layer 134, a conductive connection post 1501 is formed to fill the upper via hole. Thus, the fourth metal layer 134 is electrically connected to the connecting wire 1013 via the upper conductive connection post 1501, the intermediate layer 1502, and the lower conductive connection post 1501.

[0123] In one possible implementation, referring to Figure 2 and Figure 9 As shown, the straight-line distances between the plurality of connection structures 150 and the edge of the functional area 103 are equal.

[0124] The multiple connection structures 150 are arranged close to the edge of the functional area 103, so that the coverage area of the transition area 102 is relatively reduced, and a large area of the transition area 102 will not be covered by the non-opening area 1422, thereby not affecting the display effect.

[0125] For example, Figure 2 As shown, the opening of the functional area 103 is a circular hole, and the plurality of connection structures 150 are all located on concentric arcs surrounding the circular hole. Figure 9 As shown, the opening of the functional area 103 is a square hole, and the plurality of connection structures 150 are all located on concentric squares surrounding the square hole.

[0126] This configuration can reduce the area of the transition region 102 and optimize the display effect of the display panel 100 .

[0127] In one possible implementation, referring to Figure 6 、 Figure 7 、 Figure 12 and Figure 13 As shown, the active layer 1300 has a channel region 13001 .

[0128] The active layer 1300 is provided with a communication region 13001 to achieve disconnection and connection between the gate metal layer and the source and drain metal layers.

[0129] Since connecting wire 1013 forms a winding layer 120, which is located between the active layer 1300 and the substrate 110 in the stacked display panel 100 structure, and at least a portion of the winding insulating dielectric layer 121 is located between the active layer 1300 and the substrate 110, to ensure mutual insulation and isolation between the two, when connecting wire 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 connecting wire 1013 on the substrate 110, the active layer 1300, the connecting wire 1013, and the capacitor metal layer theoretically form a dual-gate transistor structure.

[0130] Based on this, the distribution relationship between the connecting windings and the active layer can include the following two implementations:

[0131] As a first optional implementation, Figure 6 and Figure 12 As shown, the orthographic projection of the channel region 13001 on the substrate 110 and the orthographic projection of the connecting wiring 1013 on the substrate 110 do not overlap with each other.

[0132] As a second optional implementation, Figure 7 and Figure 13 As shown, the orthographic projection of the channel region 13001 on the substrate 110 at least partially overlaps with the orthographic projection of the connecting wire 1013 on the substrate 110, and the insulating dielectric layer between the connecting wire 1013 and the active layer 1300 is a high-k dielectric layer. For example, the high-k dielectric layer may include, but is not limited to, hafnium oxide doped with aluminum, zirconium, silicon, and lanthanum.

[0133] By adopting the above two optional implementation methods, whether avoiding the connecting winding 1013 from avoiding the channel area 13001, or forming the winding insulating dielectric layer 121 into a high dielectric constant layer using a medium with a high dielectric constant, it is possible to effectively avoid the active layer 1300 and the connecting winding 1013 and the capacitor metal layer from forming a double-gate transistor structure, thereby preventing the driving process of the driving array layer 130 from being affected; and, this will not affect the display area 101, nor will it affect the display effect of the display panel 100.

[0134] In a second aspect, an embodiment of the present application provides a display device, comprising the above-mentioned display panel 100 .

[0135] 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, or the like.

[0136] Other technical features of the display device are the same as those of the above-mentioned display panel 100 and can achieve the same technical effects, which will not be described in detail here.

[0137] The display device provided in an embodiment of the present application is made of the display panel 100 described above. The display panel includes a display area 101, a transition area 102, and a functional area 103. The display panel 100 also includes a plurality of signal lines, at least some of which include a first signal line 1011, a second signal line 1012, and a connecting winding 1013. The first signal line 1011 and the second signal line 1012 are located on opposite sides of the functional area 103 and are connected by the connecting winding 1013. The first signal line 1011 and the second signal line 1012 are located within the drive array layer 130, and the connecting winding 1013 is located within the winding layer 120. The connecting winding 1013 is connected to the first signal line 1011, the connecting winding 1013, and the second signal line 1012 by corresponding connecting structures 150. The connecting structure 150 is located within the transition area 102, and the orthographic projection of the connecting structure 150 on the substrate 110 does not exceed the orthographic projection of the non-opening area 1422 on the substrate 110. In this way, the connection structure between the first signal line 1011, the second signal line 1012 and the connecting winding 1013 is covered by the non-opening area 1422, and the connecting winding 1013 is arranged between the driving array layer 130 and the substrate 110, so that the degree of reflection of ambient light and other light at the position where the connection structure 150 and the connecting winding 1013 are arranged on the display panel 100 is the same as the degree of reflection of ambient light and other light by other areas on the display panel 100, thereby avoiding the problem of differentiated display effects between the transition area 102 and the display area 101. The display area 101, the transition area 102 and the functional area 103 of the display panel 100 can present a uniform display effect at all viewing angles, and there is no difference in the display effect of the display panel 100 in the picture display and dark state, thereby improving the display effect of the display panel 100 and the display device using the display panel 100.

[0138] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0139] 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", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present application. In the description of the present application, "plurality" means two or more, unless otherwise specified.

[0140] The terms "first," "second," "third," "fourth," etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. It should be understood that the numbers used in this way are interchangeable where appropriate so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or apparatus.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that: comprising a display area, a transition area and a functional area, wherein 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 includes a plurality of signal lines, at least some of which include a first signal line, a second signal line, and a connecting winding, wherein the first signal line and the second signal line are respectively located on opposite sides of the functional area and are connected by the connecting winding; The display panel includes a substrate, a winding layer, a driving array layer and a pixel defining layer stacked in sequence, the pixel defining layer is formed with an opening area and a non-opening area; the first signal line and the second signal line are located in the driving array layer, and the connecting winding is located in the winding layer; the connecting winding and the first signal line are connected, and the connecting winding and the second signal line are connected respectively by corresponding connecting structures, the connecting structure is located in the transition area, and the orthographic projection of the connecting structure on the substrate does not exceed the orthographic projection of the non-opening area on the substrate.

2. The display panel according to claim 1, wherein: 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 arranged in sequence along a direction away from the substrate; At least a portion of the first metal layer forms a gate metal layer, at least a portion of the second metal layer forms a capacitor metal layer, at least a portion of the third metal layer forms a source / drain metal layer, and at least a portion of the fourth metal layer forms an auxiliary metal layer; The signal lines are configured as data signal lines or scan signal lines.

3. The display panel according to claim 2, wherein: The signal line includes a plurality of 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 connecting winding includes a data connecting winding; At least a portion of the first data signal line and the second data signal line is formed by the third metal layer and the fourth metal layer.

4. The display panel according to claim 2, wherein: The signal lines include a plurality of scan signal lines, the first signal lines include first scan signal lines, the second signal lines include second scan signal lines, and the connecting windings include scan signal connecting windings; At least a portion of the first scan signal line and the second scan signal line is formed by the first metal layer or the second metal layer.

5. The display panel according to claim 1, wherein: 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.

6. The display panel according to any one of claims 1 to 5, characterized in that: The sum of the reactances of one of the connecting windings and the corresponding first signal line and the second signal line is equal to the sum of the reactances of the other connecting winding and the corresponding first signal line and the second signal line.

7. The display panel according to any one of claims 1 to 5, characterized in that: The connection structure includes a conductive connection column, wherein an end of the conductive connection column away from the substrate is electrically connected to the first signal line or the second signal line, and an end of the conductive connection column close to the substrate is electrically connected to the connection winding; Alternatively, the connection structure includes at least two conductive connection posts spaced apart along the thickness direction of the display panel, an intermediate layer connecting adjacent conductive connection posts, the conductive connection posts arranged away from the substrate are electrically connected to the first signal line or the second signal line, and the conductive connection posts arranged close to the substrate are electrically connected to the connecting winding.

8. The display panel according to any one of claims 1 to 5, characterized in that: The straight-line distances between the plurality of connection structures and the edge of the functional area are equal.

9. The display panel according to any one of claims 2 to 4, characterized in that: The active layer has a channel region; an orthographic projection of the channel region on the substrate and an orthographic projection of the connecting winding on the substrate do not overlap with each other.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

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