Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a first metal layer, sub-pixels and a pixel circuit. The first metal layer is provided with a slot, an electrode connecting wire is arranged in the slot, and the electrode connecting wire and the first metal layer are on the same layer; the first end part of the electrode connecting line is connected with the sub-pixel, and the second end part is connected with the pixel circuit; the electrode connecting lines connected with sub-pixels in the same pixel form a connecting line group, the electrode connecting lines in the connecting line group comprise first connecting lines and second connecting lines, and the first connecting lines and the second connecting lines are located in different open grooves; in the first direction, the first line segment of the first connecting line and the first line segment of the second connecting line are located on the two sides of the pixel. In at least one connecting line group, the first end portion of the first connecting line and the first end portion of the second connecting line are staggered in the first direction. The problem of local heating of the first metal layer due to large current can be improved, the risk that the local area is burnt out is reduced, and the performance reliability of the display panel is improved.

Description

Technical Field

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

[0002] LED (light-emitting diode) is a commonly used light-emitting device, which is currently widely used in lighting, display and other fields. With the development of display technology, display products with Mini LED and Micro LED as display pixels have emerged. In borderless display products, the pixel circuit is retracted, and connecting wires are set to connect the pixel circuit and sub-pixels, and the connecting wires are set in the grooves of large areas of metal, which not only ensures the electrical connection between the pixel circuit and the sub-pixel, but also ensures the integrity of the large area of ​​metal. However, there is a problem of local heating and burning of metal in current products, which affects the performance and reliability of the product. Summary of the invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the technical problem of improving product performance reliability.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, including a first metal layer, a plurality of sub-pixels, and a plurality of pixel circuits; at least two sub-pixels arranged in a first direction constitute a pixel; the first metal layer has a groove, an electrode connection line is arranged in the groove, and the electrode connection line is in the same layer as the first metal layer; a first end of the electrode connection line is connected to the sub-pixel, and a second end is connected to the pixel circuit; the electrode connection line includes a first line segment extending along a second direction, the first end and the second end are located on both sides of the first line segment in the second direction, and the second direction intersects the first direction;

[0005] The electrode connection lines connected to the sub-pixels in the same pixel form a connection line group, the electrode connection lines in the connection line group include a first connection line and a second connection line, the first connection line and the second connection line are located in different slots; in a first direction, a first line segment of the first connection line and a first line segment of the second connection line are located on both sides of the pixel;

[0006] In at least one connecting wire group, a first end of a first connecting wire and a first end of a second connecting wire are staggered in a first direction.

[0007] In a second aspect, based on the same inventive concept, an embodiment of the present invention further provides a display device, comprising any display panel provided by an embodiment of the present invention.

[0008] The display panel and display device provided by the embodiments of the present invention have the following beneficial effects: in the embodiments of the present invention, the first end of the first connecting line and the first end of the second connecting line in at least one connecting line group are staggered in the first direction, which can increase the straight-line distance between the two first ends, thereby increasing the width of the first metal layer physical structure between the two first ends, improving the electrical signal transmission capability, improving the heating problem caused by the large current in the area separated by the first connecting line and the second connecting line, reducing the risk of the area between the two first ends being burned out, thereby improving the performance reliability of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces 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 invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0010] Figure 1A A schematic diagram of a display panel provided by an embodiment of the present invention;

[0011] Figure 1B for Figure 1A A local top view of the middle area at position Q;

[0012] Figure 1C A schematic diagram of a pixel circuit provided by an embodiment of the present invention;

[0013] Figure 1D A schematic diagram of another pixel circuit provided by an embodiment of the present invention;

[0014] Figure 2 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0015] Figure 3 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0016] Figure 4 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0017] Figure 5 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0018] Figure 6 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0019] Figure 7 A schematic diagram of a film layer structure of another display panel provided by an embodiment of the present invention;

[0020] Figure 8 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0021] Fig. 9 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0022] Fig.10 A simplified schematic diagram of another display panel provided by an embodiment of the present invention;

[0023] Fig.11A A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0024] Fig. 11B A schematic diagram of another display panel provided by an embodiment of the present invention;

[0025] Fig.12 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0026] Fig.13 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0027] Fig.14 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0028] Fig.15 A local simplified schematic diagram of another display panel provided by an embodiment of the present invention;

[0029] Fig.16 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0030] Fig.17 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0031] Fig.18 A schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] The inventor conducted relevant research to solve the problem of local heating and burning of metal in current products. The research found that the current structure of making grooves on metal and setting connecting wires in the grooves will split a large area of ​​metal, and the junction of the split areas will form a weak area for electrical signal transmission. When the current is large, it is easy to cause heating and burnout, affecting the performance and reliability of the product.

[0035] In order to solve the problems existing in the related art, an embodiment of the present invention provides a display panel, wherein a groove is provided on the first metal layer, an electrode connection line is provided in the groove, the first end of the electrode connection line is connected to the sub-pixel, and the second end is connected to the pixel circuit, and the pixel circuit and the sub-pixel arranged in a staggered manner are connected by the electrode connection line. The first connection line and the second connection line in the connection line group connecting a pixel are respectively arranged on both sides of the first direction of the pixel, and the first end of the first connection line and the first end of the second connection line are staggered in the first direction. In this way, the straight-line distance between the first end of the first connection line and the first end of the second connection line can be increased, the heating problem at this position can be improved, the risk of burning can be reduced, and the performance reliability can be improved.

[0036] Figure 1A A schematic diagram of a display panel provided by an embodiment of the present invention, Figure 1B for Figure 1A A local top view of the middle area Q. Figure 1A As shown, the display panel has a plurality of sub-pixels sp and a plurality of pixel circuits 10; at least two sub-pixels sp arranged in a first direction x constitute a pixel P, Figure 1A As shown in the figure, three sub-pixels sp constitute a pixel P, and the three sub-pixels sp include a red sub-pixel, a green sub-pixel and a blue sub-pixel. The sub-pixel sp includes a light emitting device, Figure 1A The sub-pixel sp includes a light emitting diode LED for illustration. The red sub-pixel includes a red light emitting diode RLED, the green sub-pixel includes a green light emitting diode GLED, and the blue sub-pixel includes a blue light emitting diode BLED. Figure 1AThe position of the schematic sub-pixel has a redundant design, such as one of the two LEDs included in the sub-pixel sp is a redundant design. First, an LED is fixed at the position of the sub-pixel sp. When detection finds that the LED is defective and cannot emit light, another LED of the same color is fixed for repair. The LED fixed first remains in the original position, so that there are two LEDs in one sub-pixel sp. In other embodiments, a sub-pixel sp includes one LED. During manufacturing, first, an LED is fixed at the position of a sub-pixel sp. When detection finds that the LED is defective and cannot emit light, the defective LED is removed, and then another LED is fixed in place for repair, so that the final sub-pixel sp includes one LED.

[0037] like Figure 1B As shown, the display panel includes a first metal layer M1, the first metal layer M1 has a groove 20, an electrode connection line 30 is arranged in the groove 20, and the electrode connection line 30 is in the same layer as the first metal layer M1; the first end 61 of the electrode connection line 30 is connected to the sub-pixel sp, and the second end 62 is connected to the pixel circuit 10. Among them, the first end 61 of the electrode connection line 30 is connected to the sub-pixel sp through the first electrode 51, and the second end 62 is connected to the pixel circuit 10 through the connecting lead 53. The first electrode 51 can be an anode, and the first electrode 51 and the first metal layer M1 are located in different layers. Figure 1B The first via hole V1 connecting the electrode connection line 30 and the first electrode 51 is shown. The electrode connection line 30 includes a first line segment 30a extending along the second direction y, and a first end 61 and a second end 62 are located on both sides of the first line segment 30a in the second direction y, and the second direction y intersects the first direction x. The end defined in the embodiment of the present invention refers to the via hole connection part on the electrode connection line 30, and the end has a certain area. Figure 1B It can be seen from the top view that the first end 61 overlaps with the first via hole V1. In fact, the second end 62 and the connecting lead 53 also need to be connected through a via hole. Figure 1B The connecting vias between the second end portion 62 and the connecting lead 53 are not shown.

[0038] In the present application, only a simplified diagram of the pixel circuit 10 is given. The pixel circuit 10 may be a conventional 7T1C pixel circuit, i.e., it includes 7 transistors and 1 storage capacitor. The pixel circuit 10 may also be a pixel circuit of a PAM (Pulse Amplitude Modulation) circuit + a PWM (Pulse Width Modulation) circuit.

[0039] Figure 1C A pixel circuit schematic diagram provided by an embodiment of the present invention illustrates a pixel circuit with a 7T1C structure. Figure 1C As shown, the pixel circuit includes a driving transistor Tm, a data writing transistor T1, a gate reset transistor T3, a threshold compensation transistor T4, an electrode reset transistor T7, a first light-emitting control transistor T5, a second light-emitting control transistor T6 and a storage capacitor Cst. The gates of the data writing transistor T1 and the threshold compensation transistor T4 are connected to the first scanning signal S1, the gate of the gate reset transistor T3 is connected to the second scanning signal S2, and the gates of the first light-emitting control transistor T5 and the second light-emitting control transistor T6 are connected to the light-emitting control signal Emit. In addition, the gate reset transistor T3 and the electrode reset transistor T7 are respectively connected to the reset signal Ref, the driving transistor Tm is connected in series between the first light-emitting control transistor T5 and the second light-emitting control transistor T6, one electrode of the first light-emitting control transistor T5 is connected to the first power supply voltage VDD, one electrode of the LED is connected to the second light-emitting control transistor T6, and the other electrode is connected to the second power supply voltage VEE.

[0040] Figure 1D Another pixel circuit schematic diagram provided by an embodiment of the present invention is as follows: Figure 1D As shown, the pixel circuit includes a first driving circuit 001 and a second driving circuit 002. The first driving circuit 001 is configured to control the duration of the driving current provided to the light-emitting device LED based on the first data voltage PWM-data, and the second driving circuit 002 is configured to control the amplitude of the driving current provided to the light-emitting device LED based on the second data voltage PAM-data.

[0041] The first driving circuit 001 includes a first driving transistor T1, a first gate reset transistor T2, a first data writing transistor T3, a first compensation transistor T4, a first control transistor T6, a second control transistor T5 and a first capacitor C1. The first capacitor C1 is a storage capacitor in the first driving circuit 001. The second control transistor T5 is connected between the first power supply voltage PWM-vdd and the first electrode of the second driving transistor T1, and the first control transistor T6 is connected between the second electrode of the first driving transistor T1 and the first node N1. The first data writing transistor T3 is connected to the first electrode of the first driving transistor T1, the first compensation transistor T4 is connected to the second electrode and the gate of the first driving transistor T1, and the first gate reset transistor T2 is connected to the gate of the first driving transistor T1. The first plate of the first capacitor C1 is connected to the gate of the first driving transistor T1, and the second plate of the first capacitor C1 is connected to the sweep signal SWEEP. Among them, the gate of the first gate reset transistor T2 is connected to the third scanning signal PWM-S1, and the gates of the first data writing transistor T3 and the first compensation transistor T4 are connected to the fourth scanning signal PWM-S2. The gates of the first control transistor T6 and the second control transistor T5 are connected to the first light emitting control signal PWM-EM.

[0042] The second driving circuit 002 includes a second driving transistor T7, a second gate reset transistor T8, a second data writing transistor T9, a second compensation transistor T10, a third control transistor T11, a fourth control transistor T12, an electrode reset transistor T13, and a second capacitor C2. The third control transistor T11 is connected between the second power supply voltage PAM-vdd and the first electrode of the second driving transistor T7, and the fourth control transistor T12 is connected between the second electrode of the second driving transistor T7 and the light emitting device LED. The second driving transistor T7 is configured to generate a driving current under the control of its gate voltage, and the gate of the second driving transistor T7 is connected to the first node N1. The second data writing transistor T9 is connected to the first electrode of the second driving transistor T7, the second compensation transistor T10 is connected to the second electrode and the gate of the second driving transistor T7, the second gate reset transistor T8 is connected to the gate of the second driving transistor T7, the electrode reset transistor T13 is connected to the first electrode of the light emitting device LED, the fourth control transistor T12 is also connected to the first electrode of the light emitting device LED, and the second electrode of the light emitting device LED is connected to the third power supply voltage VEE. The gate of the second gate reset transistor T8 is connected to the first scan signal PAM-S1; the gates of the second data write transistor T9, the second compensation transistor T10 and the electrode reset transistor T13 are connected to the second scan signal PAM-S2. The gates of the third control transistor T11 and the fourth control transistor T12 are connected to the second light emission control signal PAM-EM.

[0043] Depend on Figure 1B It can be seen that the pixel circuit 10 and the sub-pixel sp connected to the electrode connection line 30 are staggered in the first direction x, that is, the pixel circuit 10 and the sub-pixel sp are spaced a large distance apart in the second direction y. The embodiment of the present invention can be applied to a solution in which the pixel circuit 10 is retracted relative to the edge of the display panel in the second direction y, and the pixel circuit 10 is offset toward the inside of the display panel, so that the frame of the display panel can be narrowed.

[0044] The electrode connection lines 30 connected to the sub-pixels sp in the same pixel P form a connection line group 30Z, and the electrode connection lines 30 in the connection line group 30Z include a first connection line 31 and a second connection line 32, and the first connection line 31 and the second connection line 32 are located in different slots 20. In the first direction x, the first line segment 30a of the first connection line 31 and the first line segment 30a of the second connection line 32 are located on both sides of the pixel P. That is, the first connection line 31 and the second connection line 32 are respectively wound on the left and right sides of the pixel P. Figure 1BIt can be seen from the position of the middle area Q1 that in at least one connecting wire group 30Z, the first end 61 of the first connecting wire 31 and the first end 61 of the second connecting wire 32 are staggered in the first direction x. The two first ends 61 of the two connecting wires are staggered in the first direction x, which means that the two first ends are not aligned in the first direction x, or the two first ends 61 have a certain spacing distance in the second direction y.

[0045] In the embodiment of the present invention, the first metal layer M1 has a groove 20, and an electrode connection line 30 is arranged in the groove 20. The electrode connection line 30 is in the same layer as the first metal layer M1. The first metal layer M1 can be used to transmit voltage signals. Designing it as a large-area metal layer in the display panel can improve the uniformity of the signal in the plane. The pixel circuit 10 and the sub-pixel sp are connected by the electrode connection line 30. Since the electrode connection line 30 is made in the groove 20 of the first metal layer M1, in order to ensure the integrity of the first metal layer M1, the groove 20 of appropriate size will be made according to the size of the electrode connection line 30, and the electrode connection line 30 and the groove 20 where it is located are equivalent to splitting the first metal layer M1. In a connection line group 30Z, the first line segment 30a of the first connection line 31 and the first line segment 30a of the second connection line 32 are respectively located on both sides of the pixel P in the first direction x, which is equivalent to the first connection line 31 and the second connection line 32 respectively splitting the first metal layer M1 in the first direction x, and a weak area for electrical signal transmission is easily formed at the junction of the split area. In the embodiment of the present invention, in at least one connecting wire group 30Z, the first end 61 of the first connecting wire 31 and the first end 61 of the second connecting wire 32 are staggered in the first direction x, which can increase the straight-line distance between the two first ends 61, and correspondingly increase the straight-line distance between the grooves 20 where the two first ends 61 are respectively located, and also increase the width of the first metal layer M1 physical structure between the two first ends 61, thereby improving the electrical signal transmission capability, and can improve the heating problem caused by the large current in the area separated by the first connecting wire 31 and the second connecting wire 32, reduce the risk of the area between the two first ends 61 being burned out, thereby improving the performance reliability of the display panel.

[0046] In some embodiments, Figure 2 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 2 Only a partial structure of the first metal layer M1 is shown. Figure 2 As shown, the display panel includes a pixel area Z1, a pixel P (see Figure 1BThe first metal layer M1 is located in the pixel area Z1; the portion of the first metal layer M1 located in the pixel area Z1 includes a plurality of first exhaust holes 41; in the pixel area Z1, the first exhaust holes 41 are arranged into a first exhaust hole row 41H along the first direction x. It can be seen that the first metal layer M1 is provided with second exhaust holes 42 in the area outside the pixel area Z1. The exhaust holes penetrate the first metal layer M1 in the thickness direction of the first metal layer M1, and the exhaust holes are equivalent to holes dug on the metal layer. The exhaust holes are used as gas exhaust channels in the process, which can prevent large areas of the first metal layer M1 from peeling off due to the inability to exhaust gas. Figure 2 Two connecting wire groups 30Z are shown. From the first connecting wire group 30Z counted from the top, it can be seen that the first end 61 of the first connecting wire 31 and the first end 61 of the second connecting wire 32 are separated by at least one first exhaust hole row 41H along the second direction y. Figure 2 The arrows in FIG. 1 indicate the interval area between the first end portion 61 of the first connecting line 31 and the first end portion 61 of the second connecting line 32 along the second direction y.

[0047] In the embodiment of the present invention, the pixel P is located in the pixel area Z1, and the first electrode 51 in the pixel P is also located in the pixel area Z1. In order to realize the connection between the electrode connection line 30 and the sub-pixel sp, each electrode connection line 30 needs to extend the first end 61 into the pixel area Z1 and electrically connect with the first electrode 51. The portion of the first metal layer M1 located in the pixel area Z1 includes a plurality of first exhaust holes 41, and the first end 61 of the first connection line 31 and the first end 61 of the second connection line 32 are arranged to be spaced apart by at least one first exhaust hole row 41H along the second direction y, so that the straight-line distance between the two first ends 61 of the first connection line 31 and the second connection line 32 can be increased, and the straight-line distance between the grooves 20 where the two ends 61 are respectively located can be increased, thereby improving the transmission capacity of electrical signals, improving the heating problem of the area separated by the first connection line 31 and the second connection line 32, and reducing the risk of burning at the relative positions of the two first ends 61, thereby improving the performance reliability of the display panel.

[0048] In some embodiments, in the pixel area Z1 , the first exhaust holes 41 are arranged into a first exhaust hole row 41H along the first direction x; in the second direction y, the interval distance between two adjacent first exhaust hole rows 41H is d1 . Figure 2Two connecting wire groups 30Z are shown. It can be seen from the second connecting wire group 30Z from the top that the minimum distance between the slot 20 where the first connecting wire 31 is located and the slot 20 where the second connecting wire 32 is located along the second direction y is d2; d2 ≥ d1. The slot 20 is made on the first metal layer M1, and the electrode connecting wire 30 is located in the slot 20. Therefore, a certain process distance is also required between the electrode connecting wire 30 and the side wall of the slot 20 to ensure that the electrode connecting wire 30 and the first metal layer M1 are insulated. In the embodiment of the present invention, the end of the slot 20 where the first connecting line 31 is located and the end of the slot 20 where the second connecting line 32 is located are staggered in the first direction x, and d2≥d1 is set, so that the first end 61 of the first connecting line 31 and the first end 61 of the second connecting line 32 are staggered in the first direction x, and the straight-line distance between the two is increased, thereby improving the electrical signal transmission capability, improving the heating problem caused by the large current in the area separated by the first connecting line 31 and the second connecting line 32, and reducing the risk of the area between the two first ends 61 being burned out.

[0049] In other embodiments, Figure 3 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 3 FIG. 4 shows a local area of ​​the first metal layer M1. Figure 3 As shown, the display panel includes a pixel area Z1, and the portion of the first metal layer M1 located in the pixel area Z1 includes a plurality of first exhaust holes 41; in the pixel area Z1, the first exhaust holes 41 are arranged into a first exhaust hole row 41H along the first direction x. In at least one connection line group 30Z, the first end 61 of the first connection line 31 overlaps with one first exhaust hole row 41H along the first direction x, and the first end 61 of the second connection line 32 overlaps with one first exhaust hole row 41H along the first direction x, and the first exhaust hole row 41H overlapping with the first connection line 31 and the first exhaust hole row 41H overlapping with the second connection line 32 are adjacent. In other words, the two first exhaust hole rows 41H that overlap with the first end 61 of the first connection line 31 and the first end 62 of the second connection line 32 in the first direction x are two adjacent first exhaust hole rows 41H. Figure 3 In the embodiment, there are two connecting wire groups 30Z from top to bottom. It can be seen that in both connecting wire groups 30Z, the first end 61 of the first connecting wire 31 overlaps the first exhaust hole row 41H in the first direction x and the first end 62 of the second connecting wire 32 overlaps the first exhaust hole row 41H in the first direction x to form adjacent first exhaust hole rows 41H. The design of the embodiment of the present invention can increase the straight-line distance between the two first ends 61 of the first connecting wire 31 and the second connecting wire 32, thereby improving the electrical signal transmission capability and improving the heating problem caused by the large current in the area separated by the first connecting wire 31 and the second connecting wire 32.

[0050] In some other embodiments, Figure 4 FIG. 3 is another partial schematic diagram of a display panel provided by an embodiment of the present invention, Figure 4 which schematically shows a partial area of the first metal layer M1 and a first edge Y1 of the display panel extending in the first direction x. In combination with Figure 1A to understand the position of the first edge Y1. As Figure 4 shown, the first metal layer M1 includes a plurality of exhaust holes 40. The connection line group 30Z includes a first connection line group 30Z1 and a second connection line group 30Z2. The distance between the first connection line group 30Z1 and the first edge Y1 is less than the distance between the second connection line group 30Z2 and the first edge Y1. In the first connection line group 30Z1, the first end 61 of the first connection line 31 and the first end 61 of the second connection line 32 are staggered in the first direction x, and the staggering distance between the two in the second direction y is d3; in the second connection line group 30Z2, the first end 61 of the first connection line 31 and the first end 61 of the second connection line 32 are staggered in the first direction x, and the staggering distance between the two in the second direction y is d4; d4 < d3. Compared with the second connection line group 30Z2, the first connection line group 30Z1 is closer to the first edge Y1. When the first metal layer M1 is used to transmit voltage signals, the power supply source of the voltage signals is generally located at the edge of the first metal layer M1. For example, when the power supply source of the first metal layer M1 is close to the first edge Y1, the first connection line group 30Z1 is closer to the power supply source than the second connection line group 30Z2. The area between the first end 61 of the first connection line 31 and the first end 61 of the second connection line 32 in the first connection line group 30Z1 is closer to the total current source of the power supply. Setting d3 > d4 can relatively more alleviate the heating problem caused by the larger current in the area between the two first ends 61 in the first connection line group 30Z1, thereby reducing the risk of the area between the two first ends 61 being burned out and improving the performance reliability of the display panel.

[0051] In some embodiments, Figure 5 FIG. 4 is another partial schematic diagram of a display panel provided by an embodiment of the present invention. As Figure 5 shown, the display panel further includes a second metal layer M2. The second metal layer M2 includes a first electrode 51 and a second electrode 52. The first electrodes 51 are isolated from each other, and the second electrodes 52 are electrically connected to each other. A groove is formed in the second metal layer M2, and the first electrode 51 is located in the groove. Figure 5 The pixel region Z1 is marked. It can be seen that the first electrode 51 and the second electrode 52 are located in the pixel region Z1. The first electrode 51 and the second electrode 52 are used to connect to sub-pixels sp. Among them, one of the first electrode 51 and the second electrode 52 is connected to the anode of the LED, and the other is connected to the cathode of the LED. The film layer where the second metal layer M2 is located is between the first metal layer M1 and the sub-pixels sp (for reference, see Figure 7 in the schematic diagram of Figure 5 As can be seen, the second metal layer M2 includes a plurality of fourth exhaust holes 44, and the fourth exhaust holes 44 are used as gas discharge channels in the process, which can prevent the film layer peeling of the large-area second metal layer M2 due to the inability to discharge gas.

[0052] Figure 6 Another partial schematic diagram of the display panel provided by the embodiment of the present invention Figure 6 shows an overlapping schematic diagram of the first metal layer M1 and the second metal layer M2. As can be seen, the electrode connection line 30 is electrically connected to the first electrode 51 through the first via V1, and the electrode connection line 30 is connected to the sub-pixel sp through the first electrode 51 (see the schematic diagram in Figure 1B ). The first electrode 51 includes a first side B1 and a second side B2 opposite to each other in the second direction y. Wherein, along the second direction y, the distance between the first end of the first connection line 31 and the first side B1 is d5, and the distance between the first end of the second connection line 32 and the first side B1 is d6, and d5≠d6. Figure 6 Taking d5 < d6 as an example. For the first ends of the first connection line 31 and the second connection line 32 that are not shown in Figure 6 , reference can be made to Figure 1B for understanding. Figure 6 The second end 62 of the first connection line 31 is marked to show that the distance between the first side B1 and the second end 62 is less than the distance between the second side B2 and the second end 62 in the second direction y. In some other embodiments, in the second direction y, the distance between the first side B1 and the second end 62 is greater than the distance between the second side B2 and the second end 62, and d5≠d6, so that the first ends of the first connection line 31 and the second connection line 32 are staggered in the first direction x.

[0053] During manufacturing, the first electrodes 51 in a pixel region Z1 are regularly arranged. For example, three first electrodes 51 are arranged in the first direction x, and the three first electrodes 51 basically have the same size. In the embodiment of the present invention, setting d5≠d6 can make the first ends of the first connection line 31 and the second connection line 32 staggered in the first direction x, can increase the straight-line distance between the two first ends, can improve the heating problem caused by the large current in the region cut by the first connection line 31 and the second connection line 32, and reduce the risk of burnout in the region between the two first ends 61, thereby improving the performance reliability of the display panel.

[0054] In some embodiments, Figure 7 Another schematic diagram of the film layer structure of the display panel provided by the embodiment of the present invention, as shown in Figure 7As shown, the display panel includes a substrate 00, a driving layer 01 located on the substrate 00, and a first metal layer M1 and a second metal layer M2 located on a side of the driving layer 01 away from the substrate 00. Figure 7 It can be seen that the film layer where the second metal layer M2 is located is located between the first metal layer M1 and the sub-pixel sp, and a eutectic layer 015 is also provided on the side of the second metal layer M2 away from the substrate 00, and the electrode of the light-emitting device LED in the sub-pixel sp is connected to the electrode in the second metal layer M2 through the eutectic layer 015. The driving layer 01 includes a pixel circuit 10, Figure 7 The middle mark shows a transistor TFT in the pixel circuit 10. The driving layer 01 includes a semiconductor layer 011, a gate metal layer 012, an electrode metal layer 013 and a source-drain metal layer 014. The active layer of the transistor TFT is located in the semiconductor layer 011, and a light shielding layer 02 is also provided between the semiconductor layer 011 and the substrate 00. In the direction e perpendicular to the plane where the substrate 00 is located, the light shielding layer 02 overlaps with the active layer of the transistor TFT. The light shielding layer 02 is used to shield the active layer of the transistor TFT on the substrate 00 side to prevent light from irradiating the active layer and affecting the performance of the transistor TFT. The gate of the transistor TFT is located in the gate metal layer 012, and the first electrode plate of the storage capacitor is provided in the electrode metal layer 013, and the second electrode plate of the storage capacitor is located in the gate metal layer 012. The source and drain of at least part of the transistor TFT are provided in the source-drain metal layer 014. The first metal layer M1 is located on the side of the second metal layer M2 close to the substrate 00, and the pixel circuit 10 is provided between the first metal layer M1 and the substrate 00. Among them, the sub-pixel sp is arranged on the side of the second metal layer M2 away from the first metal layer M1. A positive power supply structure for transmitting a positive power supply signal can be arranged in the first metal layer M1, and a negative power supply structure for transmitting a negative power supply signal can be arranged in the second metal layer M2. Setting both the positive power supply structure and the negative power supply structure as a large-area metal structure can reduce the voltage drop of the transmitted power supply signal and improve the display uniformity. In addition, with the design of exhaust holes on the large-area metal, the gas generated in the display panel process can be discharged through the exhaust holes to prevent the film peeling phenomenon of the large-area metal.

[0055] Combination Figure 1B From the top view, Figure 1B The relative positions of the pixel circuit 10 and the electrode connection line 30 are shown in FIG. Figure 1B The pixel circuit 10 is only illustrated in a block diagram, and it can be understood that in the embodiment of the present invention, the pixel circuit 10 includes a transistor TFT structure. In the embodiment of the present invention, the electrode connection line 30 and the transistor TFT are arranged in a direction perpendicular to the plane where the substrate is located, so that the electrode connection line 30 does not overlap with the transistor TFT. Such an arrangement can avoid the groove 20 for accommodating the electrode connection line 30, thereby preventing the transistor TFT from being affected by light and affecting the device performance.

[0056] In some embodiments, Figure 1B As shown, the electrode connection line 30 in the connection line group 30Z also includes a third connection line 33, and the groove 20 where the third connection line 33 is located is connected to the groove 20 where the second connection line 32 is located. Then, in the first direction x, the first line segment 30a of the first connection line 31 and the first line segment 30a of the third connection line 33 are located on both sides of the pixel P. Figure 1B It can be seen that in the first direction x, the distance between the first end 61 of the third connecting wire 33 and the first end 61 of the first connecting wire 31 is greater than the distance between the first end 61 of the second connecting wire 32 and the first end 61 of the first connecting wire 31. In at least one connecting wire group 30Z: the first end 61 of the first connecting wire 31 and the first end 61 of the third connecting wire 33 are staggered in the first direction x, or the first end 61 of the first connecting wire 31 and the first end 61 of the third connecting wire 33 are aligned in the first direction x. Figure 1B Two first connecting line groups 30Z are shown. Figure 1B In the first connecting wire group 30Z counted from top to bottom, the first end 61 of the first connecting wire 31 and the first end 61 of the third connecting wire 33 are substantially aligned in the first direction x. Figure 1B In the second connection line group 30Z counted from top to bottom, the first end 61 of the first connection line 31 and the first end 61 of the third connection line 33 are staggered in the first direction x. The alignment of the two first ends in the first direction x is understood to be substantially non-staggered in the first direction x, and the staggering of the two first ends in the first direction x includes complete staggering and partial staggering in the first direction x. A connection line group 30Z is provided including three electrode connection lines 30, which can cooperate with the design that the pixel P includes three sub-pixels sp, so that each sub-pixel sp is electrically connected to the pixel circuit 10 through the corresponding electrode connection line 30. The groove 20 where the third connecting line 33 is located is connected to the groove 20 where the second connecting line 32 is located, and the three electrode connecting lines 30 are wound on the left and right sides of the pixel P, and the third connecting line 33 and the second connecting line 32 are located on the same side of the pixel P, and the first end portions 61 of the third connecting line 33 and the second connecting line 32 are designed to correspond to the first end portion 61 of the first connecting line 31 in the first direction x (offset or aligned), which can improve the heating problem caused by the large current in the area separated by the three electrode connecting lines 30 in the connecting line group 30Z, reduce the risk of burning in the area between the two first end portions 61, and thus improve the performance reliability of the display panel.

[0057] In some embodiments, Figure 1BAs shown, three sub-pixels sp arranged in the first direction x constitute a pixel P; in the pixel P, the sub-pixel sp connected to the first connection line 31, the sub-pixel sp connected to the second connection line 32, and the sub-pixel sp connected to the third connection line 33 are arranged in sequence. In a connection line group 30Z, the distance between the first line segment 30a of the second connection line 32 and the first line segment 30a of the first connection line 31 is greater than the distance between the first line segment 30a of the third connection line 33 and the first line segment 30a of the first connection line 31. Such a setting can make it easier to design the groove 20 in the first metal layer M1, combined with Figure 1B It is understood that in order to save the number and area of ​​the slots 20 and ensure the overall area of ​​the non-slotted area of ​​the first metal layer M1, the first end of the second connecting line 32 in the previous connecting line group 30Z is connected to the slot 20 where the second end of the second connecting line 32 and the second end of the third connecting line 33 in the next connecting line group 30Z are located. Assuming that the distance between the first line segment 30a of the second connection line 32 and the first line segment 30a of the first connection line 31 is smaller than the distance between the first line segment 30a of the third connection line 33 and the first line segment 30a of the first connection line 31, that is, the second connection line 32 is wound inside the third connection line 33 (the inside and outside are relative to the first connection line 31, the side close to the first connection line 31 in the same connection line group 30Z is the inside, and the side away from the first connection line 31 is the outside), and the second connection line 32 needs to connect the middle one of the three pixel circuits 10, which will make the left edge of the slot 20 in the area Q2 form an alternating concave and convex shape, which is not conducive to the design of the slot 20 on the first metal layer M1. However, the left edge of the slot 20 at the position of the area Q2 using the design of the embodiment of the present invention is generally step-shaped, and the shape of the edge of the slot 20 changes more smoothly, which is conducive to making the slot 20 occupy less space. In addition, the embodiment of the present invention arranges the second connection line 32 outside the third connection line 33, which is more conducive to increasing the distance between the first end 61 of the first connection line 31 and the first end 61 of the second connection line 32, and reducing the risk of local heating and burning of the first metal layer M1. In addition, the problem of stable characteristics of transistors in the display panel can be comprehensively considered, and the second connection line 32 and the third connection line 33 can avoid the transistors below to prevent the transistor characteristics from being affected.

[0058] In some embodiments, Figure 8 A partial schematic diagram of another display panel provided by an embodiment of the present invention. Figure 8 The local position of the first metal layer M1 and the first edge Y1 extending along the first direction x in the display panel are shown. The first edge Y1 can be combined with Figure 1A Understand. Figure 8As shown, the connecting wire group 30Z includes a third connecting wire group 30Z3 and a fourth connecting wire group 30Z4, and the distance between the third connecting wire group 30Z3 and the first edge Y1 is smaller than the distance between the fourth connecting wire group 30Z4 and the first edge Y1. In the third connecting wire group 30Z3, the first end 61 of the first connecting wire 31 and the first end 61 of the third connecting wire 33 are staggered in the first direction x; in the fourth connecting wire group 30Z4, the first end 61 of the first connecting wire 31 and the first end 61 of the third connecting wire 33 are aligned in the first direction x. Figure 1B It can be understood that the pixel circuit 10 or other circuit structures need to be arranged under the first metal layer M1, and the circuit is provided with a transistor structure, and the channel of the transistor is easily affected by light and the performance of the transistor. The embodiment of the present invention designs the corresponding conditions of the first end 61 of the first connection line 31 and the first end 61 of the third connection line 33 in the first direction x to avoid the transistor structure under the first metal layer M1, avoid the groove 20 for accommodating the electrode connection line from exposing the transistor below, and ensure the stability of the transistor characteristics.

[0059] In some embodiments, Fig. 9 A partial schematic diagram of another display panel provided by an embodiment of the present invention. Fig. 9 Only one electrode connection line group 30Z is shown in simplified form. Fig. 9 As shown, the electrode connecting line 30 includes a first line segment 30a extending along the second direction y, a second line segment 30b extending along the first direction x, and a third line segment 30c extending along the first direction x, and the two ends of the first line segment 30a are connected to the second line segment 30b and the third line segment 30c; the second line segment 30b includes a first end 61, or the second line segment 30b is connected to the first end 61, and the third line segment 30c includes a second end 62, or the third line segment 30c is connected to the second end 62. Fig. 9 It is shown in the figure that the second line segment 30b of the first connecting line 31 is connected to an end extending in the second direction y, and the end is the first end 61, that is, in the first connecting line 31, the second line segment 30b is connected to the first end 61. In the second connecting line 32 and the third connecting line 33, the second line segment 30b includes the first end 61. Correspondingly, it can be understood that in the three electrode connecting lines, the third line segment 30c includes the second end 62. Among them, the length of the second line segment 30b of the second connecting line 32 in the first direction x is greater than the length of the second line segment 30b of the first connecting line 31 in the first direction x; and / or, the length of the third line segment 30c of the second connecting line 32 in the first direction x is greater than the length of the third line segment 30c of the first connecting line 31 in the first direction x. Combined with Figure 1BFrom the perspective of the embodiment of the present invention, a second connecting line 32 is provided to connect the middle one of the three sub-pixels sp in the pixel P, and the second connecting line 32 is connected to the middle one of the three pixel circuits 10. Therefore, the length of each line segment of the electrode connecting line 30 is reasonably designed according to the position of the sub-pixel sp connected to the electrode connecting line 30 and the position of the pixel circuit 10, which can simplify the wiring method in the display panel, reduce winding, and save layout space.

[0060] In some embodiments, Fig. 9 As shown, the spacing between the first line segment 30a of the first connection line 31 and the first line segment 30a of the second connection line 32 is D1; ​​in the first direction x, the spacing between the first end of the first connection line 31 and the first end of the second connection line 32 is D2, and the spacing between the second end of the first connection line 31 and the second end of the second connection line 32 is D3; D1>D2, D1>D3. In this embodiment, the first connection line 31 and the second connection line 32 form a brace-like wiring, and the electrode connection line forms a winding design that can avoid the transistor between the first metal layer M1 and the substrate, preventing the groove 20 on the first metal layer M1 that accommodates the electrode connection line from overlapping with the transistor, thereby preventing light from being emitted to the transistor through the groove 20, and avoiding the change of characteristics of the transistor after being exposed to light.

[0061] In another embodiment, Fig.10 A simplified schematic diagram of another display panel provided by an embodiment of the present invention, Fig.10 The diagram shows an electrode connection line group 30Z, a group of pixel circuits 10 and first electrodes 51 corresponding to three sub-pixels sp. Fig.10 As shown, the first end 61 of the electrode connection line 30 is connected to the first electrode 51, and the second end 62 is connected to the pixel circuit 10. The second end 62 of the first connection line 31 is connected to the first pixel circuit 10 among the three pixel circuits 10 arranged in the first direction x, and the first end 61 is connected to the first one from the left among the three first electrodes 51 arranged in the first direction x. The second end 62 of the second connection line 32 is connected to the pixel circuit 10 at the middle position among the three pixel circuits 10 arranged in the first direction x, and the first end 61 is connected to one of the middle positions among the three first electrodes 51 arranged in the first direction x. The connection line group 30Z also includes a third connection line 33, the second end 62 of the third connection line 33 is connected to the third pixel circuit 10 from the left among the three pixel circuits 10 arranged in the first direction x, and the first end 61 is connected to the third one from the left among the three first electrodes 51 arranged in the first direction x. It can be seen that the distance between the first line segment 30a of the second connecting line 32 and the first line segment 30a of the first connecting line 31 is smaller than the distance between the first line segment 30a of the third connecting line 33 and the first line segment 30a of the first connecting line 31, that is, the second connecting line 32 is wound inside the third connecting line 33. Fig.10It can be seen that in the first direction x, the distance between the first end 61 of the third connecting line 33 and the first end 61 of the first connecting line 31 is greater than the distance between the first end 61 of the second connecting line 32 and the first end 61 of the first connecting line 31. In this embodiment, the slot where the second connecting line 32 is located can be connected to the slot where the third connecting line 33 is located, and the slot where the second connecting line 32 is located can be disconnected from the slot where the first connecting line 31 is located, and the first end 61 of the first connecting line 31 and the first end 61 of the second connecting line 32 are staggered in the first direction x.

[0062] In some embodiments, Fig.11A A partial schematic diagram of another display panel provided by an embodiment of the present invention, such as Fig.11A As shown, the display panel includes a plurality of signal terminals 70, and the signal terminals 70 are located on one side of the first metal layer M1 in the second direction y. The signal terminals 70 include a power supply terminal 71, and the first metal layer M1 is electrically connected to the power supply terminal 71, and the power supply terminal 71 provides a signal to the first metal layer M1. Among them, in the connection line group 30Z adjacent to the power supply terminal 71, the first end 61 of the first connection line 31 and the first end 61 of the second connection line 32 are staggered in the first direction x. Fig.11A The first end 61 of each connecting wire is circled in the figure. Since the connecting wire group 30Z adjacent to the power supply terminal 71 is closer to the power supply source, the total current at its location is relatively large. The two first ends 61 of the first connecting wire 31 and the second connecting wire 32 at this location are set to be staggered in the first direction x, which can improve the heating problem caused by the large current in the area between the two first ends 61 at this location, thereby reducing the risk of the area between the two first ends 61 being burned out, and improving the performance reliability of the display panel.

[0063] In the embodiment of the present invention, the signal terminal 70 may be formed by stacking a plurality of metal sub-parts on the substrate 00. Figure 7 For example, the signal terminal 70 includes a sub-portion located in the first metal layer M1, a sub-portion located in the second metal layer M2, a sub-portion located in the gate metal layer 012, and a sub-portion located in the source-drain metal layer 014, and each sub-portion overlaps and is electrically connected in a direction e perpendicular to the substrate 00.

[0064] Fig. 11B A schematic diagram of another display panel provided by an embodiment of the present invention, such as Fig. 11B As shown, the signal terminal 70 is connected to the side lead 701 of the display panel. The signal terminal 70 is used to connect the side lead 701 of the display panel to lead the signal to the back of the display panel and then bind it to the flexible circuit board. This can reduce the frame of the display panel to achieve a frameless display effect.

[0065] In some embodiments, Fig.12 A schematic diagram of another display panel provided by an embodiment of the present invention, Fig.12 The local position of the first metal layer M1 and the first edge Y1 extending along the first direction x in the display panel are shown. The first edge Y1 can be combined with Figure 1A Understand. Fig.12 It can be seen that in the connecting line group 30Z adjacent to the first edge Y1, the first end 61 of the first connecting line 31 and the first end 61 of the second connecting line 32 are staggered in the first direction x. Fig.12 As shown, the connection line group 30Z includes a fifth connection line group 30Z5 and a sixth connection line group 30Z6 that are adjacent to each other. The fifth connection line group 30Z5 is located on a side of the sixth connection line group 30Z6 that is away from the first edge Y1. The first end 61 of the first connection line 31 and the first end 61 of the second connection line 32 in the fifth connection line group 30Z5 are staggered in the first direction x. In this embodiment, the fifth connection line group 30Z5 is not adjacent to the first edge Y1, and is closer to the inside of the display area than the sixth connection line group 30Z6. In the embodiment of the present invention, the two first ends 61 of the first connecting line 31 and the second connecting line 32 in the connecting line group 30Z adjacent to the first edge Y1 are first staggered in the first direction x, and the first end 61 of the first connecting line 31 and the first end 61 of the second connecting line 32 in the fifth connecting line group 30Z5 away from the first edge Y1 are further staggered in the first direction x. This can not only improve the heating problem caused by the large current in the area between the two first ends 61 at the total current source of the first metal layer M1, but also can further improve the problem of severe local heating in the first metal layer M1 away from the first edge Y1.

[0066] like Fig.12 As shown, the first connection line 31 in the fifth connection line group 30Z5 and the first connection line 31 in the sixth connection line group 30Z6 are arranged in the second direction y; the slot 20 where the first connection line 31 in the fifth connection line group 30Z5 and the slot 20 where the first connection line 31 in the sixth connection line group 30Z6 are arranged in the second direction y, and the two are not connected. In this embodiment, the slots 20 where two adjacent first connection lines 31 in the second direction y are not connected, and an opening is formed between the two first connection lines 31. The opening is understood to be a physical metal structure of the first metal layer M1 at this position. A lateral current branch (such as Fig.12 In this way, the first metal layer M1 not only has a longitudinal power supply path (indicated by a black arrow) between the electrode connection lines 30 adjacent to each other in the first direction x, but also has a transverse current branch, which can reduce the risk of local burns of the first metal layer M1 due to excessive current and improve performance reliability.

[0067] In some embodiments, Fig.12 As shown, the first end 61 of the first connecting wire 31 and the first end 61 of the second connecting wire 32 in the fifth connecting wire group 30Z5 are staggered in the first direction x. Fig.12 The virtual line extending along the first direction x is indicated by a dotted line, and it can be seen that the second end 62 of the first connecting line 31 in the sixth connecting line group 30Z6 is located below the virtual line, and the second end 62 of the second connecting line 32 is located above the virtual line. That is, in the sixth connecting line group 30Z6, the second end 62 of the first connecting line 31 and the second end 62 of the second connecting line 32 are staggered in the first direction x. Such an arrangement can make the opening formed between the first connecting line 31 in the fifth connecting line group 30Z5 and the first connecting line 31 in the sixth connecting line group 30Z6 have a larger width in the second direction y, which can improve the current transmission capacity of the lateral current branch at the opening position, and further reduce the risk of the first metal layer M1 being burned due to excessive current.

[0068] In some embodiments, a plurality of connecting wire groups 30Z are arranged in a connecting wire group row in the second direction y, and the second end 62 of the first connecting wire 31 and the second end 62 of the second connecting wire 32 in the connecting wire group 30Z are staggered in the first direction x, and the staggered distance of the two second ends 62 in the first direction x gradually changes along the arrangement direction of the plurality of connecting wire groups 30Z. Such an arrangement can cooperate with the staggered design of the two first ends 61 of the first connecting wire 31 and the second connecting wire 32 in the connecting wire group 30Z, so that an opening of appropriate size is formed between two adjacent connecting wire groups 30Z in the second direction y.

[0069] In some embodiments, Fig.13 A schematic diagram of another display panel provided by an embodiment of the present invention, Fig.13 The connection relationship between the electrode connection line 30, the pixel circuit 10 and the sub-pixel sp is shown. The electrode connection line 30 is connected to the sub-pixel sp through the first electrode 51. The sub-pixel sp includes a light emitting diode, Fig.13 FIG. 1 shows a red light emitting diode RLED, a green light emitting diode GLED, and a blue light emitting diode BLED. Fig.13 As shown, the display panel includes a first edge Y1 extending along a first direction x; the sub-pixel sp includes a first sub-pixel 1sp, and the pixel circuit 10 includes a first pixel circuit 11; the first sub-pixel 1sp is connected to the first pixel circuit 11 through an electrode connection line 30; the second end of the electrode connection line 30 is located on a side of the first end thereof away from the first edge Y1. It can be seen that along the second direction y, the distance between the first pixel circuit 11 and the first edge Y1 is greater than the distance between the first sub-pixel 1sp and the first edge Y1. Fig.13As shown in the figure, three electrode connection lines 30 form a connection line group 30Z. The pixel circuit 10 and the sub-pixel sp connected by the electrode connection line 30 are offset in the first direction x. The pixel circuit 10 is offset toward the inside of the display area relative to the sub-pixel sp, that is, the pixel circuit 10 is set to be retracted relative to the first edge Y1. Such a setting can narrow the border of the display panel.

[0070] Along the second direction y, a plurality of connecting line groups 30Z are arranged into connecting line group rows ( Fig.13 Not indicated), Fig.13 The connection line group includes four connection line groups 30Z for illustration, and in practice, the connection line groups can be designed according to specific requirements. Fig.13 As shown, the display area includes a first display area AA1 and a second display area AA2, and the electrode connection line 30 is located in the first display area AA1. In the first display area AA1, the pixel circuit 10 and the first electrode 51 in the sub-pixel sp connected thereto do not overlap, so the two need to be connected through the electrode connection line 30. In the second display area AA2, the pixel circuit 10 and the first electrode 51 in the sub-pixel sp connected thereto overlap, and the electrode connection line defined in the present invention does not need to be set between the two. Therefore, it can be understood that the connection line group column in the embodiment of the present invention does not correspond to a whole column of pixels arranged in the second direction y. For the position close to the central area of ​​the display area, such as the connection method of the pixel circuit and the sub-pixel connected thereto in the second display area AA2, the connection method will be described in the following related embodiments.

[0071] like Figure 1A As shown, the display panel includes a first edge Y1 extending along a first direction x and a second edge Y2 extending along a second direction y. At a position close to the first edge Y1, the pixel circuit 10 is offset toward the inside of the display panel along the first direction x. It can be seen that a row of pixels P adjacent to the first edge Y1 does not overlap with the pixel circuit 10 circuit. Such a setting can reduce the border width of the display panel extending in the first direction x. At the same time, at a position close to the second edge Y2, part of the pixel circuit 10 is offset toward the inside of the display panel along the first direction x, that is, the pixel circuit 10 is retracted relative to the second edge Y2. It can be seen that a column of pixels P adjacent to the second edge Y2 does not overlap with the pixel circuit 10 circuit. Such a setting can reduce the border width of the display panel extending in the second direction y.

[0072] In some embodiments, Fig.14 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Fig.14 Only a local position of the first metal layer M1 is shown. Fig.14 As shown, along the second direction y, a plurality of connecting line groups 30Z are arranged into connecting line group columns 30ZL. Fig.14The diagram shows three connection wire groups 30Z in a connection wire group column 30ZL. In the connection wire group column 30ZL, the first connection wires 31 of adjacent connection wire groups 30Z are arranged in the second direction y, and there are at least two connection wire groups 30Z, the two connection wire groups 30Z are adjacent in the second direction y, and the two slots 20 where the two first connection wires 31 of the two connection wire groups 30Z are located are not connected. In the embodiment of the present invention, at least two adjacent first connection wires 31 in the connection wire group column 30ZL are located. An opening can be formed between the two first connection wires 31, and a transverse current branch can be formed at the opening position (indicated by an arrow). On the first metal layer M1, there is not only a longitudinal power supply path (indicated by an arrow) between the electrode connection wires 30 adjacent in the first direction x, but also a transverse current branch is formed, which can reduce the risk of the first metal layer M1 being burned due to excessive current and improve performance reliability.

[0073] In some embodiments, Fig.14 As shown, in the connection line group 30ZL, the two slots 20 where the two first connection lines 31 of any two adjacent connection line groups 30Z are located are not connected. This arrangement allows more lateral current branches to be formed on the connection line group 30ZL, which is more conducive to dispersing the current in the first metal layer M1 and reducing the risk of local burns in the first metal layer M1 due to excessive current.

[0074] In some embodiments, Fig.14 As shown, the display panel includes a pixel area Z1 and a non-pixel area Z2, and the area outside the pixel area Z1 is the non-pixel area Z2. The portion of the first metal layer M1 located in the pixel area Z1 includes a plurality of first exhaust holes 41, and the portion of the first metal layer M1 located in the non-pixel area Z2 includes a plurality of second exhaust holes 42; the second exhaust holes 42 are arranged along the first direction x to form a second exhaust hole row 42H. The second exhaust holes 42 are used as gas exhaust channels in the process to prevent large areas of the first metal layer M1 from peeling off due to the inability to exhaust gas. Fig.14 It can be seen from the middle area Q3 that in the connection line group 30Z, at least two slots 20 where two first connection lines 31 of two adjacent connection line groups 30Z are located are separated by at least one second exhaust hole row 42H along the second direction y. In this embodiment, the area between the slot 20 and the second exhaust hole 42 is the solid metal of the first metal layer M1, which can serve as a lateral current branch to reduce the risk of local burns of the first metal layer M1 due to excessive current.

[0075] In some embodiments, Fig.14As shown, the spacing distance between two second exhaust holes 42 adjacent in the second direction y is d7. Two second exhaust holes 42 adjacent in the second direction y refer to the two second exhaust holes 42 being basically located on the same straight line extending in the second direction y. It can be seen from the position of area Q4 that in the connecting wire group 30Z, the minimum distance between the two slots 20 where the two first connecting wires 31 of at least two adjacent connecting wire groups 30Z are located along the second direction y is d8; d8≥d7. The area between the two second exhaust holes 42 adjacent in the second direction y is the solid metal of the first metal layer M1. In this embodiment, d8≥d7 is set so that a lateral current branch can be formed in the area between the two adjacent slots 20 in the second direction y to reduce the risk of local burns of the first metal layer M1 due to excessive current.

[0076] In some embodiments, Fig.14 As shown, the connection line group 30Z includes a first connection line group 30Z1 and a second connection line group 30Z2; the arrangement of the electrode connection lines 30 in the first connection line group 30Z1 and the second connection line group 30Z2 is the same. This embodiment adopts the same wiring design for each connection line group 30Z, simplifying the design rules of the slot 20 of the first metal layer M1.

[0077] In some embodiments, Fig.15 A local simplified schematic diagram of another display panel provided by an embodiment of the present invention, Fig.15 Only the groove 20 in the first metal layer M1 and the electrode connection line 30 located in the groove 20 are shown schematically. Fig.15 As shown, in the connecting wire array 30ZL, the minimum distance between the two slots 20 where two adjacent first connecting wires 31 are located in the second direction y gradually changes. Fig.13 It can be understood that the number of connection line groups in the connection line group array 30ZL is less than the number of pixels in a whole column of pixels arranged along the second direction y, that is, the electrode connection lines 30 are basically arranged on both sides of the display panel in the second direction y. In the position where the electrode connection lines 30 are not arranged, it is not necessary to arrange the slots 20 on the first metal layer, and the minimum distance between the two slots 20 where two adjacent first connection lines 31 in the connection line group array 30ZL are located in the second direction y gradually changes, which can balance the resistance difference at different positions on the first metal layer, so that the signal transmission capacity of the lateral current branch gradually changes, reducing the risk of excessive local current in the first metal layer and being burned.

[0078] In some embodiments, Fig.15 As shown, the display panel includes a first edge Y1 extending along a first direction x; between the edge Y1 and the first metal layer ( Fig.15A plurality of signal terminals 70 are arranged between the first metal layer M1 and the first metal layer M1 (not indicated), that is, the signal terminal 70 is arranged on one side of the first metal layer M1 in the second direction y, and the signal terminal 70 is located on one side of the first metal layer M1 close to the first edge Y1. The signal terminal 70 includes a power supply terminal 71. In conjunction with FIG. 11 , the first metal layer M1 is electrically connected to the power supply terminal 71. Away from the first edge Y1 along the second direction y, the minimum distance between the two slots 20 where two adjacent first connecting wires 31 in the connecting wire group 30ZL are located in the second direction y gradually decreases. In the embodiment of the present invention, the power supply terminal 71 is arranged near the first edge Y, and the total current at the position close to the power supply terminal 71 on the first metal layer is relatively large, and the risk of the first metal layer being burned is also relatively high. The design of the embodiment of the present invention is adopted, so that the width of the opening formed by the two adjacent first connecting wires 31 on the connecting wire group 30ZL gradually decreases away from the first edge Y1 along the second direction y. A larger lateral current branch can be formed by using a larger opening at a position close to the first edge Y1, thereby reducing the risk of the first metal layer being burned due to excessive current. At a position far from the first edge Y1, a smaller opening is used to transition the lateral current branch, so as to achieve a relatively smooth transition of the current on the first metal layer between the area where the electrode connection line 30 is provided and the area where the electrode connection line 30 is not provided.

[0079] In some embodiments, Fig.16 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Fig.16 To simplify the schematic diagram, only the wiring of the electrode connection wire 30 is shown. Fig.16 As shown, in the connecting wire group column 30ZL, the second connecting wires 32 of two adjacent connecting wire groups 30Z are arranged in the second direction y, and there are at least two connecting wire groups 30Z, the two connecting wire groups 30Z are adjacent, and the two slots 20 where the two second connecting wires 32 of the two connecting wire groups 30Z are located are not connected. As can be seen at the position of area Q5, the two slots 20 where the two second connecting wires 32 of two adjacent connecting wire groups 30Z in the second direction y are located are not connected. Figure 1B For example, if the two slots 20 where the two second connection lines 32 are located are not connected, the physical metal structure of the first metal layer M1 can exist between the two slots 20 where the two second connection lines 32 are located adjacent to each other in the second direction y, and the physical metal structure of the first metal layer M1 forms a transverse current branch. Such an arrangement can form more transverse power supply branches between the electrode connection lines 30 adjacent to each other in the second direction y, which is more conducive to reducing the risk of local burns of the first metal layer M1 due to excessive current.

[0080] In some embodiments, in the connection line group column 30ZL, the two slots 20 where the second connection lines 32 of any two adjacent connection line groups 30Z are located are not connected. This is not shown in the drawings here.

[0081] In some embodiments, as Fig.15 shown, the display panel includes a first edge Y1 extending along the first direction x; the connection line group 30Z includes a seventh connection line group 30Z7, the seventh connection line group 30Z7 is adjacent to the first edge Y1, and at least one electrode connection line 30 in the seventh connection line group 30Z7 includes two first line segments 30a extending along the second direction y. Among them, the first connection line 31 in the seventh connection line group 30Z7 includes two first line segments 30a, and the two first line segments 30a are a first sub-line segment 30a1 and a second sub-line segment 30a2; in the first direction x, the distance between the first sub-line segment 30a1 and the second connection line 32 is D11, and the distance between the second sub-line segment 30a2 and the second connection line 32 is D12, D11 < D12; the first sub-line segment 30a1 is located on the side of the second sub-line segment 30a2 close to the first edge Y1. In this embodiment, the first sub-line segment 30a1 and the second sub-line segment 30a2 form a stepped trace. In practical applications, a circuit structure, such as an electrostatic protection circuit, can be arranged between the first sub-line segment 30a1 and the second connection line 32. The first sub-line segment 30a1 and the second connection line 32 are respectively wound around the left and right sides of the electrostatic protection circuit, so that the first sub-line segment 30a1 and the second connection line 32 do not overlap with the transistors in the electrostatic protection circuit, which can prevent light from irradiating the transistors through the slots 20 on the first metal layer M1 and avoid the change of transistor characteristics caused by light irradiation.

[0082] In some embodiments, as Fig.13 shown, the display panel includes a first display area AA1 and a second display area AA2, and the electrode connection line 30 is located in the first display area AA1. Figure 2 Schematically shows a partial schematic diagram of the first display area AA1. It can be Figure 2 seen that the display panel includes a pixel area Z1 and a non-pixel area Z2, and the area outside the pixel area Z1 is the non-pixel area Z2. Among them, the pixel P is located in the pixel area Z1. In the first display area AA1: the first metal layer M1 located in the pixel area Z1 includes a plurality of first exhaust holes 41, and the first metal layer M1 located in the non-pixel area Z2 includes a plurality of second exhaust holes 42. The arrangement patterns of the first exhaust holes 41 and the second exhaust holes 42 are different. By designing the arrangement patterns of the exhaust holes differently according to the positions of different metal parts in the first metal layer M1, it can help the discharge of gas during the process and prevent the film layer of the first metal layer M1 from peeling off.

[0083] Fig.17 This is another partial schematic diagram of the display panel provided by the embodiment of the present invention. Fig.17FIG. 4 shows a partial diagram of the first metal layer M1 in the second display area AA2. Fig.17 As shown, in the second display area AA2: the first metal layer M1 located in the pixel area Z1 includes a plurality of first exhaust holes 41, and the first metal layer M1 located in the non-pixel area Z2 includes a plurality of second exhaust holes 42 and a plurality of third exhaust holes 43; the area of ​​the third exhaust hole 43 is larger than the area of ​​the first exhaust hole 41, and the area of ​​the third exhaust hole 43 is larger than the area of ​​the second exhaust hole 42. Among them, the arrangement of the first exhaust holes 41 in the pixel area Z1 of the first display area AA1 is roughly the same as the arrangement of the first exhaust holes 41 in the pixel area Z1 of the second display area AA2. Affected by the metal layer manufacturing process, the overall area of ​​the metal layer is limited, and a third exhaust hole 43 with a larger area size is also arranged on the first metal layer M1 in the second display area AA2 to reduce the metal area of ​​the first metal layer M1 and ensure the process yield.

[0084] in addition, Fig.17 In the figure, a connecting electrode 54 is also shown in the pixel area Z1, and a groove ( Fig.17 The connecting electrode 54 is located in the groove. The connecting electrode 54 is connected between the pixel circuit and the sub-pixel. In the second display area AA2, the pixel circuit and the corresponding sub-pixel overlap in a direction perpendicular to the plane of the substrate. The connecting electrode 54 is connected to the pixel circuit through the via hole below it and is connected to the first electrode (such as Fig.13 ) and then connected to the sub-pixel.

[0085] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes a display panel provided by any embodiment of the present invention. The structure of the display panel has been described in the above embodiments and will not be repeated here. The display device provided by the embodiment of the present invention can be, for example, a mobile phone, a tablet, a computer, a television, a smart wearable product, and other electronic devices with display functions. The display device provided by the embodiment of the present invention can also be a transparent display device, such as a transparent display window; it can also be a spliced ​​display device, such as a large screen in a conference room, a large screen in an exhibition hall, etc.

[0086] In one embodiment, Fig.18 A schematic diagram of a display device provided by an embodiment of the present invention is shown in FIG. Fig.18 As shown, the display device 1000 includes two display panels 100 spliced ​​together. The display panel 100 is one provided by any embodiment of the present invention. The spliced ​​display device provided by the embodiment of the present invention includes a*b display panels in a rows and b columns. a and b are both positive integers, and a and b are not 1 at the same time.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: The invention comprises a first metal layer, a plurality of sub-pixels and a plurality of pixel circuits; at least two of the sub-pixels arranged in a first direction constitute one pixel; the first metal layer has a groove, an electrode connection line is arranged in the groove, and the electrode connection line is in the same layer as the first metal layer; a first end of the electrode connection line is connected to the sub-pixel, and a second end is connected to the pixel circuit; the electrode connection line comprises a first line segment extending along a second direction, the first end and the second end are located on both sides of the first line segment in the second direction, and the second direction intersects the first direction; The electrode connection lines connected to the sub-pixels in the same pixel form a connection line group, the electrode connection lines in the connection line group include a first connection line and a second connection line, the first connection line and the second connection line are located in different slots; in the first direction, the first line segment of the first connection line and the first line segment of the second connection line are located on both sides of the pixel; In at least one of the connecting wire groups, the first end of the first connecting wire and the first end of the second connecting wire are staggered in the first direction.

2. The display panel according to claim 1, characterized in that: The display panel includes a pixel area, the pixel is located in the pixel area; the portion of the first metal layer located in the pixel area includes a plurality of first exhaust holes; in the pixel area, the first exhaust holes are arranged into a first exhaust hole row along the first direction; In at least one of the connecting wire groups, the first end of the first connecting wire and the first end of the second connecting wire are spaced apart by at least one first exhaust hole row along the second direction.

3. The display panel according to claim 1, characterized in that: The display panel includes a pixel area, the pixel is located in the pixel area; the portion of the first metal layer located in the pixel area includes a plurality of first exhaust holes; in the pixel area, the first exhaust holes are arranged into a first exhaust hole row along the first direction; in the second direction, the interval distance between two adjacent first exhaust hole rows is d1; In at least one of the connecting wire groups, a minimum distance along the second direction between the slot where the first connecting wire is located and the slot where the second connecting wire is located is d2; d2≥d1.

4. The display panel according to claim 1, characterized in that: The display panel includes a pixel area, the pixel is located in the pixel area; the portion of the first metal layer located in the pixel area includes a plurality of first exhaust holes; in the pixel area, the first exhaust holes are arranged into a first exhaust hole row along the first direction; In at least one of the connecting line groups, the first end of the first connecting line overlaps with one of the first exhaust hole rows along the first direction, the first end of the second connecting line overlaps with one of the first exhaust hole rows along the first direction, and the first exhaust hole row overlapping with the first connecting line is adjacent to the first exhaust hole row overlapping with the second connecting line.

5. The display panel according to claim 1, characterized in that: The display panel comprises a first edge extending along the first direction; The connecting line group includes a first connecting line group and a second connecting line group, and the distance between the first connecting line group and the first edge is smaller than the distance between the second connecting line group and the first edge; In the first connecting wire group, the first end of the first connecting wire and the first end of the second connecting wire are staggered in the first direction, and the staggered distance between the two along the second direction is d3; In the second connecting wire group, the first end of the first connecting wire and the first end of the second connecting wire are staggered in the first direction, and the staggered distance between the two along the second direction is d4; d4 <d3。 6. The display panel according to claim 1, characterized in that: The display panel further includes a first electrode and a second electrode, the first electrode and the second electrode are located in the same layer; the film layer where the first electrode and the second electrode are located is located between the first metal layer and the plurality of sub-pixels, and the sub-pixels are connected to the first electrode and the second electrode correspondingly; the electrode connection line is connected to the sub-pixel through the first electrode; The first electrode includes a first side edge and a second side edge that are opposite to each other in the second direction; Wherein, along the second direction, the distance between the first end of the first connecting line and the first side is d5, the distance between the first end of the second connecting line and the first side is d6, and d5≠d6.

7. The display panel according to claim 1, characterized in that: The electrode connection wires in the connection wire group further include a third connection wire, and the slot where the third connection wire is located is connected to the slot where the second connection wire is located; In at least one of the connecting wire groups: the first end of the first connecting wire and the first end of the third connecting wire are staggered in the first direction, or the first end of the first connecting wire and the first end of the third connecting wire are aligned in the first direction.

8. The display panel according to claim 7, characterized in that: The display panel comprises a first edge extending along the first direction; The connecting line group includes a third connecting line group and a fourth connecting line group, and the distance between the third connecting line group and the first edge is smaller than the distance between the fourth connecting line group and the first edge; Among them, in the third connecting line group, the first end of the first connecting line and the first end of the third connecting line are staggered in the first direction; in the fourth connecting line group, the first end of the first connecting line and the first end of the third connecting line are aligned in the first direction.

9. The display panel according to claim 7, characterized in that: Three of the sub-pixels arranged in the first direction constitute one pixel; In the pixel, the sub-pixel connected to the first connection line, the sub-pixel connected to the second connection line, and the sub-pixel connected to the third connection line are arranged in sequence.

10. The display panel according to claim 1, characterized in that: The electrode connection line includes a second line segment extending along the first direction and a third line segment extending along the first direction, and two ends of the first line segment connect the second line segment and the third line segment; the second line segment includes the first end, or the second line segment is connected to the first end, and the third line segment includes the second end, or the third line segment is connected to the second end; wherein the length of the second line segment of the second connecting line in the first direction is greater than the length of the second line segment of the first connecting line in the first direction; and / or, A length of the third line segment of the second connecting line in the first direction is greater than a length of the third line segment of the first connecting line in the first direction.

11. The display panel according to claim 1, characterized in that: The display panel includes a power supply terminal; Among them, in the connection line group adjacent to the power supply terminal, the first end of the first connection line and the first end of the second connection line are staggered in the first direction.

12. The display panel according to claim 1, characterized in that: The display panel comprises a first edge extending along the first direction; The connecting wire group includes a fifth connecting wire group and a sixth connecting wire group that are adjacent to each other, the fifth connecting wire group is located on a side of the sixth connecting wire group that is away from the first edge; the first end of the first connecting wire in the fifth connecting wire group and the first end of the second connecting wire are staggered in the first direction.

13. The display panel according to claim 12, characterized in that: The first connecting lines in the fifth connecting line group and the first connecting lines in the sixth connecting line group are arranged in the second direction; The slot where the first connecting line in the fifth connecting line group is located and the slot where the first connecting line in the sixth connecting line group is located are arranged in the second direction, and the two are not connected.

14. The display panel according to claim 13, characterized in that: In the sixth connecting wire group, the second end of the first connecting wire and the second end of the second connecting wire are staggered in the first direction.

15. The display panel according to claim 1, characterized in that: Arranging a plurality of the connection line groups into connection line group rows along the second direction; In the connection line group column, the first connection lines of adjacent connection line groups are arranged in the second direction, and there are at least two connection line groups, the two connection line groups are adjacent in the second direction, and the two slots where the two first connection lines of the two connection line groups are located are not connected.

16. The display panel according to claim 15, characterized in that: In the connection line group column, the two slots where the two first connection lines of any two adjacent connection line groups are located are not connected.

17. The display panel according to claim 16, characterized in that: In the connection line group, the minimum distance between two adjacent slots where two first connection lines are located in the second direction changes gradually.

18. The display panel according to claim 17, characterized in that: The display panel comprises a first edge extending along the first direction; As the distance between two adjacent slots in the connection line array where two first connection lines are located gradually decreases along the second direction away from the first edge.

19. The display panel according to claim 15, characterized in that: In the connection line group column, the second connection lines of two adjacent connection line groups are arranged in the second direction, and there are at least two connection line groups, the two connection line groups are adjacent, and the two slots where the two second connection lines of the two connection line groups are located are not connected.

20. The display panel according to claim 15, characterized in that: The display panel includes a non-pixel area, and a portion of the first metal layer located in the non-pixel area includes a plurality of second exhaust holes; the second exhaust holes are arranged in a second exhaust hole row along the first direction; In the connecting wire groups, at least two of the slots where two first connecting wires of two adjacent connecting wire groups are located are separated by at least one second exhaust hole row along the second direction.

21. The display panel according to claim 15, characterized in that: The display panel includes a non-pixel area, and a portion of the first metal layer located in the non-pixel area includes a plurality of second exhaust holes; in the second direction, a spacing distance between two adjacent second exhaust holes is d7; In the connecting wire groups, at least in two adjacent connecting wire groups, the minimum distance between two of the slots where two of the first connecting wires are located along the second direction is d8; d8≥d7.

22. The display panel according to claim 15, characterized in that: The connection line group column comprises a first connection line group column and a second connection line group column; The electrode connection lines in the first connection line group column and the second connection line group column are arranged in the same manner.

23. The display panel according to claim 1, characterized in that: The display panel includes a substrate and a transistor, and the pixel circuit includes the transistor; along a direction perpendicular to a plane where the substrate is located, the electrode connection line does not overlap with the transistor.

24. The display panel according to claim 1, characterized in that: The display panel comprises a first edge extending along the first direction; The sub-pixel includes a first sub-pixel, and the pixel circuit includes a first pixel circuit; the first sub-pixel is connected to the first pixel circuit through the electrode connection line; the second end of the electrode connection line is located on a side of the first end thereof away from the first edge; Along the second direction, a distance between the first pixel circuit and the first edge is greater than a distance between the first sub-pixel and the first edge.

25. The display panel according to claim 1, characterized in that: The distance between the first segment of the first connection line and the first segment of the second connection line is D1; in the first direction, the distance between the first end of the first connection line and the first end of the second connection line is D2, and the distance between the second end of the first connection line and the second end of the second connection line is D3; D1 > D2, D1 > D3.

26. The display panel according to claim 25, wherein the display panel includes a first edge extending in the first direction; the connection line group includes a seventh connection line group adjacent to the first edge, and at least one electrode connection line in the seventh connection line group includes two first segments; wherein, the first connection line in the seventh connection line group includes two first segments, which are a first sub-segment and a second sub-segment; in the first direction, the distance between the first sub-segment and the second connection line is D11, and the distance between the second sub-segment and the second connection line is D12, D11 < D12; the first sub-segment is located on the side closer to the first edge of the second sub-segment.

27. The display panel according to claim 1, wherein the display panel includes a first display area and a second display area, and the electrode connection line is located in the first display area; the display panel includes a pixel area and a non-pixel area, and the pixels are located in the pixel area; wherein, in the first display area: the first metal layer located in the pixel area includes a plurality of first exhaust holes, and the first metal layer located in the non-pixel area includes a plurality of second exhaust holes; in the second display area: the first metal layer located in the pixel area includes a plurality of the first exhaust holes, and the first metal layer located in the non-pixel area includes a plurality of the second exhaust holes and a plurality of third exhaust holes; the area of the third exhaust hole is larger than the area of the first exhaust hole, and the area of the third exhaust hole is larger than the area of the second exhaust hole.

28. A display device, characterized in that: Including the display panel according to any one of claims 1 to 27.

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