Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises: a driving substrate having a first surface, the first surface having an edge region; a plurality of light emitting units located on one side of the driving substrate, the light emitting units comprising first light emitting units, the first light emitting units being located in the edge region, and the first light emitting units having a first projection on the orthographic projection of the first surface; a plurality of pads having a second projection on the orthographic projection of the first surface, the second projection being located in the first projection and / or at least one second projection being located between adjacent first projections; a plurality of first wires extending from the first surface to a side of the driving substrate away from the first surface, one end of the first wire on the first surface being electrically connected with the pad; and the plurality of first wires extending from the pad to the side of the driving substrate away from the first surface. The application solves the problem that the display at the splicing seam is different from the display in the display area when the display panel is spliced in the prior art.

Description

TECHNICAL FIELD

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

[0002] In the prior art, the display panel needs side wiring, and a certain area is occupied when the pads are arranged, which increases the area of the non-display area of the display panel. When the display panel needs to be spliced, the non-display area at the splicing position of the two display panels is doubled, which increases the scattering of the light emitted by the light emitting element at the non-display area, which causes the display at the splicing position of the non-display area to be different from the display area. SUMMARY

[0003] The present application provides a display panel and a display device to solve the problem that the display at the splicing position is different from the display in the display area when the display panel is spliced in the prior art.

[0004] According to one aspect of the present application, a display panel is provided, comprising: a driving substrate having a first surface, the first surface having an edge area; a plurality of light emitting units located on one side of the driving substrate, the light emitting units comprising first light emitting units, the first light emitting units being located in the edge area, the first light emitting units having a first projection on the first surface; a plurality of pads, the pads having a second projection on the first surface, the second projection being located in the first projection and / or at least one of the second projections being located between adjacent first projections; a plurality of first wires extending from the first surface to a side of the driving substrate away from the first surface, one end of the first wire on the first surface being electrically connected to the pad; a plurality of first wires extending from the pad to a side of the driving substrate away from the first surface, one end of the first wire on the first surface being electrically connected to the pad.

[0005] According to another aspect of the present application, a display device is also provided, comprising the display panel as described above.

[0006] The present application provides a display panel, wherein the first light emitting units and the pads are spaced apart in the edge area of the driving substrate, the pads are located between the first light emitting units and the driving substrate, or between adjacent first light emitting units, the pads in the prior art are moved from the edge of the driving substrate to below the first light emitting units, which reduces the area of the non-display area of the driving substrate, i.e. reduces the splicing area between the spliced display panels, and further reduces the scattering effect of the light emitted by the first light emitting units after the first wires are arranged on the display panel, thereby solving the problem that the display at the splicing position is different from the display in the display area when the display panel is spliced in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0007] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein in

[0008] Figure 1 is a top view structural schematic diagram of a display panel according to an embodiment of the present application;

[0009] Figure 2 is a top view structural schematic diagram of another display panel according to an embodiment of the present application;

[0010] Figure 3 is a top view structural schematic diagram of still another display panel according to an embodiment of the present application;

[0011] Figure 4 is a sectional view structural schematic diagram of a display panel according to an embodiment of the present application;

[0012] Figure 5 is a sectional view structural schematic diagram of still another display panel according to an embodiment of the present application;

[0013] Figure 6 is a sectional view structural schematic diagram of still another display panel according to an embodiment of the present application;

[0014] Figure 7 is a sectional view structural schematic diagram of still another display panel according to an embodiment of the present application;

[0015] Figure 8 is a sectional view structural schematic diagram of still another display panel according to an embodiment of the present application;

[0016] Figure 9 is a sectional view structural schematic diagram of still another display panel according to an embodiment of the present application;

[0017] Figure 10 is a sectional view structural schematic diagram of still another display panel according to an embodiment of the present application;

[0018] Figure 11 is a schematic diagram of a display device according to an embodiment of the present application.

[0019] Among the above drawings, the following reference signs are included:

[0020] 1, display device; 2, display area; 10, driving substrate; 20, first light emitting unit; 21, first connecting part; 22, second connecting part; 23, first lead wire; 24, second lead wire; 30, pad; 40, driving module; 41, active layer; 42, gate metal layer; 43, source / drain metal layer; 44, capacitor metal layer; 45, first metal layer; 46, second metal layer; 47, third metal layer; 50, substrate; 60, light shielding layer; 70, shielding layer; 80, first trace. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0024] As mentioned in the background, the display panel needs side wiring, which will occupy a certain area when setting the pad, increasing the area of the non-display area of the display panel. When the display panel needs to be spliced, the non-display area at the splicing place of the two display panels will be doubled, which will increase the scattering of the light emitted by the light emitting element at the non-display area. Therefore, there is a difference between the display at the splicing place of the non-display area and the normal display area. The present application proposes a display panel and a display device for the prior art.

[0025] According to one embodiment of the present application, as Figures 1 to 4As shown, a display panel is provided, comprising: a driving substrate 10 having a first surface, the first surface having an edge region; a plurality of light-emitting units located on one side of the driving substrate 10, the light-emitting units including a first light-emitting unit 20 located in the edge region, the orthographic projection of the first light-emitting unit 20 on the first surface being a first projection; a plurality of pads 30, the orthographic projection of the pads 30 on the first surface being a second projection, the second projection being located within the first projection and / or at least one of the second projections being located between adjacent first projections; and a plurality of first traces 80 extending from the side surface of the pads 30 near the first light-emitting unit 20 to the side of the driving substrate 10 opposite to the first surface, one end of the first trace on the first surface being electrically connected to the pads 30.

[0026] In the prior art, the outermost part of the display panel is provided with pads for side traces. The area of ​​the pads near the center of the display panel is where the light-emitting unit is located. This application reduces the area of ​​the display panel occupied by the first light-emitting unit and the pads by forming pads below the first light-emitting unit at the edge area of ​​the driving substrate in the above-mentioned display panel, or forming pads between adjacent first light-emitting units at the edge area. This makes the area at the edge of the display panel smaller, that is, the area of ​​the non-display area smaller. When display panels need to be spliced, the area of ​​the non-display area at the splicing point of multiple display panels will be greatly reduced, thereby greatly avoiding the scattering phenomenon of light emitted by the first light-emitting element, reducing the display difference between the non-display area and the display area, and improving the display quality of the display panel.

[0027] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In the above embodiments, such as Figures 1 to 4 As shown, the area between the dashed and solid lines of the driving substrate 10, i.e. Figure 1 The outermost ring of light-emitting units is located in the edge region, and the outermost ring of light-emitting units is the first light-emitting unit 20. Figures 1 to 3 The image only shows pad 30 on one edge area; pad 30 can be configured appropriately according to actual conditions. For example, Figure 1 As shown, the pad 30 is at least partially located directly below the first light-emitting unit 20; as Figure 2As shown, part of the pads 30 is directly below the first light emitting units 20, and the other part of the pads 30 has a projection on the driving substrate 10 between the projections of two adjacent first light emitting units 20 on the driving substrate 10; as shown Figure 3 As shown, the projection of the pads 30 on the driving substrate 10 is between the projections of two adjacent first light emitting units 20 on the driving substrate 10. The above three cases all move the position of the pads 30 from the edge area of the display panel to the area close to the center of the display panel. In the case of the same display panel area, the display panel of the present application can place more light emitting units, and can make the integration of the display panel higher and the color more vivid.

[0029] In some optional embodiments, as shown Figure 4 As shown, the first wire 80 covers part of the pads 30, and the projection of the first wire 80 on the driving substrate 10 has an overlapping area with the projection of the pads 30 on the driving substrate 10.

[0030] In the above optional embodiments, as shown Figure 4 As shown, the pads 30 are electrically connected with the cathodes of the first light emitting units 20 to transmit the electrical signal input by the anodes to the first wire 80, and the first wire 80 outputs the electrical signal to the back of the driving substrate 10 through the pads 30, and then drives other devices and modules on the back of the driving substrate 10 to complete the side wire. The first light emitting units 20 can be arranged at equal intervals on the driving substrate 10, and in order to avoid the first wire 80 and the lead of the first light emitting units 20, the first wire 80 can be arranged at non-equal intervals. Figure 4 The anodes of the first light emitting units 20 in the driving module 40 are electrically connected.

[0031] In some optional embodiments, the first light emitting units include first color light emitting units and second color light emitting units, the wavelength of the first color light emitting units is greater than the wavelength of the second color light emitting units, the first color light emitting units and the pads close to the driving substrate on the side of the first color light emitting units have a first interval in the first direction, the second color light emitting units and the pads close to the driving substrate on the side of the second color light emitting units have a second interval in the first direction, the first interval is less than the second interval, and the first direction is the thickness direction of the driving substrate.

[0032] In the above optional embodiments, since the device intensity of the red light-emitting element is worse than that of the green and blue light-emitting elements, the red light-emitting element is usually not placed at the edge of the driving substrate. The edge is more prone to impacts, making the red light-emitting element more susceptible to damage and increasing repair difficulty and cost. The light emitted by the first color light-emitting unit can be green, and the light emitted by the second color light-emitting unit can be blue. Since the wavelength of green light is longer than that of blue light, green light experiences less refraction. A smaller first spacing prevents green light from refracting to the pads during propagation and interfering with side trace signals. Similarly, blue light experiences greater refraction, and a larger second spacing prevents blue light from directly refracting to the pads during propagation.

[0033] In some alternative implementations, such as Figure 5 As shown, the driving substrate includes a substrate 50 and a driving module 40. The driving module 40 includes an active layer 41, a gate metal layer 42 and a source / drain metal layer 43.

[0034] In the above optional implementations, such as Figure 5 As shown, Figure 5 The diagram shows a partial cross-sectional view of the driving substrate, in which the driving module 40 includes a multi-layer structure: an active layer 41, a gate metal layer 42, a source / drain metal layer 43, and a capacitor metal layer 44. The capacitor metal layer 44 has no electrical connection to the active layer 41, the gate metal layer 42, and the source / drain metal layer 43. Figure 5 The other layers are conventional insulating layers in the driving substrate, preventing short circuits between metal layers that do not require electrical connection. The aforementioned first trace is electrically connected to the pad 30, transmitting the electrical signal from the first light-emitting unit to the pad 30 to the side of the driving substrate away from the first surface, and then electrically connecting to other devices or modules.

[0035] The aforementioned substrate can be formed from any of the following: polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyaryl compounds (PAR), glass fiber reinforced plastic (FRP), glass, and ceramics. The conductive film can be made of organic and flexible materials, and this application does not impose any specific limitations.

[0036] In some alternative implementations, such as Figure 5 and Figure 6 As shown, the side surface of the pad 30 closest to the first light-emitting unit 20 is located between the first light-emitting unit 20 and the source / drain metal layer 43.

[0037] In the above optional implementations, such as Figure 5 andFigure 6 As shown, the above-mentioned pad 30 is a multi-layer metal structure, which can be 2-6 layers in general. Figure 5 and Figure 6 The pad in the middle includes a gate metal layer 42, a source / drain metal layer 43, a capacitor metal layer 44, a first metal layer 45, a second metal layer 46 and a third metal layer 47. The third metal layer 47 is above the source / drain metal layer 43. In the preparation of the driving substrate, the above-mentioned active layer 41, the above-mentioned gate metal layer 42, the above-mentioned source / drain metal layer 43 and the above-mentioned capacitor metal layer 44 are formed first to form the above-mentioned driving module 40, and then the above-mentioned first metal layer 45, the above-mentioned second metal layer 46 and the above-mentioned third metal layer 47 are formed to form the pad 30. The above-mentioned first light-emitting unit 20 has an anode and a cathode, wherein the anode is electrically connected to the above-mentioned active layer 41, and the cathode is electrically connected to the above-mentioned third metal layer 47. At this time, the pad 30 is located between the driving module 40 and the first light-emitting unit 20.

[0038] In the above-mentioned optional embodiments, in the case that the pad is located between the driving module and the first light-emitting unit, the pad can also have a multi-layer metal structure, such as the above-mentioned gate metal layer, the above-mentioned source / drain metal layer, the above-mentioned capacitor metal layer, the above-mentioned first metal layer and the above-mentioned second metal layer, wherein the above-mentioned second metal layer is higher than the source / drain metal layer; or a 4-layer metal structure, such as the above-mentioned gate metal layer, the above-mentioned source / drain metal layer, the above-mentioned capacitor metal layer and the above-mentioned first metal layer, wherein the above-mentioned first metal layer is higher than the source / drain metal layer.

[0039] In some optional embodiments, as shown in Figure 6 The above-mentioned first light-emitting unit 20 has a first connecting part 21 and a second connecting part 22. The first connecting part 21 and the second connecting part 22 are spaced apart on the side of the first light-emitting unit 20 close to the driving substrate. The first connecting part 21 and the second connecting part 22 are located on the side of the pad 30 away from the driving substrate. The display panel further includes a first lead wire 23 and a second lead wire 24. The first lead wire 23 is located on the side of the first connecting part 21 close to the driving substrate and is electrically connected to the first connecting part 21. The second lead wire 24 is located on the side of the second connecting part 22 close to the driving substrate and is electrically connected to the second connecting part 22. There is a gap between the pad 30 and the first lead wire 23. There is a gap between the pad 30 and the second lead wire 24.

[0040] In the above-mentioned optional embodiments, as shown in Figure 6As shown, the first connecting part 21 is electrically connected with the anode of the first light emitting unit 20, and the first lead wire 23 is electrically connected with the active layer 41 in the driving module 40 to realize input of signals. The second connecting part 22 is electrically connected with the cathode of the first light emitting unit 20, and the second lead wire 24 is electrically connected with the pad 30 to realize output of signals, thereby realizing side edge wiring. The present application is a monolithic integrated process, which integrates the side edge wiring and the light unit in the same display panel. In addition to realizing seamless splicing, the display panel can also realize frameless display. Figure 6 The first wiring is not shown in the figure, and the first wiring is electrically connected with the pad 30 below the second lead wire 24. In the process of manufacturing the display panel, the first wiring can be formed first, and then the first light emitting unit 20 is bonded to the driving substrate.

[0041] In some optional embodiments, as shown in Figure 7 The display panel further includes a light shielding layer 60, which is located on the side of the driving substrate close to the first light emitting unit 20. The light shielding layer 60 covers the pad 30. The gap has at least part of the light shielding layer 60, so that the first lead wire 23 and the pad 30 are isolated by part of the light shielding layer 60, and the second lead wire 24 and the pad 30 are isolated by part of the light shielding layer 60.

[0042] In the optional embodiments, as shown in Figure 7 When the light emitting unit is transferred to the driving substrate, laser bonding and other processes are used, and crosstalk between the signals of the side edge wiring and the driving signals of the first light emitting unit 20 is easy to occur. The light shielding layer 60 is made of light shielding material, which avoids the influence of laser bonding on the signals of the side edge wiring and the driving signals of the first light emitting unit 20. The materials of the first lead wire 23 and the second lead wire 24 can be Ti or Cu, and the materials of the first connecting part 21 and the second connecting part 22 can include any one or more of Ti, Ni and Sn, but are not limited to the above types, and the present application is not limited in this regard. Figure 7 The driving module 40, the active layer 41, the gate metal layer 42, the source / drain metal layer 43, the capacitor metal layer 44 and the substrate 50 in the figure are consistent with the description in Figure 6

[0043] In some optional embodiments, as shown in Figure 6 The orthogonal projections of the first connecting part 21 and the second connecting part 22 on the first surface are third projection and fourth projection respectively, and the third projection and the second projection have no overlapping area, and the fourth projection and the second projection have no overlapping area.

[0044] In the optional embodiments, as shown in Figure 6 ​As shown, when the light shielding layer is not present, in order to avoid crosstalk between the signal of the side edge trace and the driving signal of the first light emitting unit 20, the pad 30 is disposed between the first connection part 21 and the second connection part 22, and there is no overlap among the three, which can reduce signal crosstalk, and the second lead wire 24 is electrically connected to the pad 30 inside the driving substrate.

[0045] In some optional embodiments, as shown in Figure 8 As shown, the display panel further comprises a shielding layer 70, the shielding layer 70 is located on the side of the pad 30 close to the first light emitting unit 20, the shielding layer 70 has part of the light shielding layer 60 between the first connection part 21 and the second connection part 22, the shielding layer 70 has part of the light shielding layer 60 between the pad 30, and the first lead wire 23 and the second lead wire 24 penetrate the shielding layer 70.

[0046] In the above optional embodiments, as shown in Figure 8 As shown, since the display panel of the present application has high integration, the side edge trace and the first lead wire 23 for driving the first light emitting unit are densely distributed, the traces are easily affected by signal crosstalk, so that the signal of the side edge trace and the driving signal of the first light emitting unit are not only affected by laser, but also affected by electric field and electromagnetic field. The shielding layer 70 is formed between the pad 30 and the first light emitting unit 20, which can reduce the mutual influence between the signal of the side edge trace and the driving signal of the first light emitting unit, and the shielding layer 70 can be formed of any one or more layers of Ta, Li, Mo and Cu, such as Ta / Li / Ta, Mo / Li / Mo and Cu / Ta. The shielding layer 70 can be electrically connected to the separate normal pressure signal or the cathode signal, and the shielding layer 70 can prevent the signal between the driving module 40 and the pad 30 from causing breakdown effect. Figure 8 The active layer 41, the gate metal layer 42, the source / drain metal layer 43, the capacitor metal layer 44 and the substrate 50 in the driving module 40 are consistent with the description in Figure 6 The active layer 41, the gate metal layer 42, the source / drain metal layer 43, the capacitor metal layer 44 and the substrate 50 in the driving module 40 are consistent with the description in

[0047] In some optional embodiments, as shown in Figure 9 As shown, the surface of the pad 30 close to the first light emitting unit 20 is located between the active layer 41 and the source / drain metal layer 43.

[0048] In the above optional embodiments, as shown in Figure 9As shown, the pad 30 only includes the gate metal layer 42 and the capacitor metal layer 44, at this time, the capacitor metal layer is electrically connected with the second lead wire 24, and the capacitor metal layer is located between the active layer 41 and the source / drain metal layer 43. It can be said that the pad 30 is located at the lower position of the driving module 40. After the pad 30 is formed, the source / drain metal layer 43 is deposited to form the driving module 40. Figure 9 In the embodiment without the light shielding layer, there is no projection overlapping area between the first connecting part 21, the second connecting part 22 and the pad 30, which avoids the signal crosstalk problem caused by high integration. If the shielding layer and the light shielding layer are provided on the pad 30, there can be a projection overlapping area between the pad 30 and the first connecting part 21 and the second connecting part 22. Figure 9 The first lead wire 23 and the substrate 50 in the embodiment are consistent with the description in the Figure 6 embodiment.

[0049] In some optional embodiments, as shown in Figure 10 the above pad 30 includes multiple metal layers, and the metal layer of the pad 30 close to the first light emitting unit 20 is located at the same layer as the driving module 40, and the first projection has a gap with the orthographic projection of the driving module 40 on the first surface.

[0050] In the above optional embodiments, as shown in Figure 10 the pad 30 only includes the gate metal layer 42, the capacitor metal layer 44 and the source / drain metal layer 43, and the above several metal layers in the pad 30 share the gate metal layer 42, the capacitor metal layer 44 and the source / drain metal layer 43 in the driving module 40, that is, the driving module 40 and the pad 30 are formed at the same time, and there is no overlapping of the projection area between the driving module 40 and the first light emitting unit 20. At this time, it can be said that the pad 30 and the driving module 40 are in the same layer of the driving substrate. Figure 10 In the embodiment without the light shielding layer, there is no projection overlapping area between the first connecting part 21, the second connecting part 22 and the pad 30. If the light shielding layer and the shielding layer exist, the shielding effect can be generated on the side edge wire signal and the driving signal of the first light emitting unit 20, and there can be a projection overlapping between the first connecting part 21, the second connecting part 22 and the pad 30. Figure 10 The active layer 41, the first lead wire 23, the second lead wire 24 and the substrate 50 in the embodiment are consistent with the description in the Figure 6 embodiment.

[0051] According to another embodiment of the present application, as shown in Figure 11 a display device 1 is provided, which includes the above display panel, and the display panel has a display area 2 and a non-display area.

[0052] Specifically, the display device can be a mobile phone, a computer, a television, or the like, and the display panel can be applied to the display device.

[0053] According to the above embodiments, the display panel and the display device provided by the present application have the following technical effects:

[0054] 1) The solder pad is formed below the first light emitting unit at the edge region of the driving substrate of the display panel, or the solder pad is formed between the adjacent first light emitting units at the edge region, so that the area of the display panel occupied by the first light emitting unit and the solder pad is reduced, and the area of the display panel at the edge is smaller, i.e., the area of the non-display region is smaller. In the case where the display panel needs to be spliced, the area of the non-display region at the splicing position of the plurality of display panels is greatly reduced, and the scattering of light emitted by the first light emitting element is greatly avoided, so that the display difference between the non-display region and the display region is reduced, and the display quality of the display panel is improved.

[0055] 2) The display panel of the present application can place more light emitting units, so that the integration of the display panel is higher, and the color is more vivid. Meanwhile, the shielding layer is formed between the solder pad and the first light emitting unit, so that the crosstalk problem between the signal of the side edge trace and the driving signal of the first light emitting unit caused by the integration is avoided.

[0056] It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0057] The above is only an embodiment of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A display panel, characterized in that, include: A driving substrate has a first surface, the first surface having an edge region; Multiple light-emitting units are located on one side of the driving substrate. Each light-emitting unit includes a first light-emitting unit located in the edge region. The orthographic projection of the first light-emitting unit onto the first surface is a first projection. Multiple pads, wherein the orthographic projection of the pads on the first surface is a second projection, the second projection is located within the first projection and / or at least one second projection is located between adjacent first projections; The first light-emitting unit includes a first color light-emitting unit and a second color light-emitting unit. The wavelength of the first color light-emitting unit is greater than the wavelength of the second color light-emitting unit. The first color light-emitting unit and the pad located on its side near the driving substrate have a first spacing in a first direction. The second color light-emitting unit and the pad located on its side near the driving substrate have a second spacing in a first direction. The first spacing is greater than the second spacing. The first direction is the thickness direction of the driving substrate. Multiple first traces extend from the side of the pad near the first light-emitting unit to the side of the driving substrate away from the first surface, and one end of the first trace on the first surface is electrically connected to the pad.

2. The display panel according to claim 1, characterized in that, The driving substrate includes a substrate and a driving module, and the driving module includes an active layer, a gate metal layer and a source / drain metal layer.

3. The display panel according to claim 2, characterized in that, The surface of the pad closest to the first light-emitting unit is located between the first light-emitting unit and the source / drain metal layer.

4. The display panel according to claim 3, characterized in that, The first light-emitting unit has a first connecting portion and a second connecting portion, which are spaced apart and located on the side of the first light-emitting unit near the driving substrate. The first connecting portion and the second connecting portion are located on the side of the pad away from the driving substrate. The display panel also includes a first lead and a second lead. The first lead is located on the side of the first connecting portion near the driving substrate and is electrically connected to the first connecting portion. The second lead is located on the side of the second connecting portion near the driving substrate and is electrically connected to the second connecting portion. There is a gap between the pad and the first lead, and there is a gap between the pad and the second lead.

5. The display panel according to claim 4, characterized in that, The display panel further includes a light-shielding layer located on the side of the driving substrate near the first light-emitting unit. The light-shielding layer covers the pads, and the gap has at least a portion of the light-shielding layer so that the first lead and the pads are isolated by a portion of the light-shielding layer, and the second lead and the pads are isolated by a portion of the light-shielding layer.

6. The display panel according to claim 5, characterized in that, The display panel further includes a shielding layer located on the side of the pad near the first light-emitting unit. The shielding layer has a portion of the light-shielding layer between itself and the first connection portion and the second connection portion, and a portion of the light-shielding layer between itself and the pad. The first lead and the second lead penetrate the shielding layer.

7. The display panel according to claim 4, characterized in that, The orthographic projections of the first connecting portion and the second connecting portion on the first surface are the third projection and the fourth projection, respectively. The third projection and the second projection have no overlapping areas, and the fourth projection and the second projection have no overlapping areas.

8. The display panel according to claim 2, characterized in that, The surface of the pad closest to the first light-emitting unit is located between the active layer and the source / drain metal layer.

9. The display panel according to claim 2, characterized in that, The pad includes multiple metal layers. The metal layer of the pad near the first light-emitting unit is located on the same layer as the driving module. There is a gap between the first projection and the orthographic projection of the driving module on the first surface.

10. The display panel according to claim 1, characterized in that, The first trace covers a portion of the pad, and the orthographic projection of the first trace on the driving substrate and the orthographic projection of the pad on the driving substrate have an overlapping area.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 10.

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