Display panel and display device

Abstract

A display panel and a display device. The display panel comprises: a substrate (10); a first conductive layer located on one side of the substrate (10), the first conductive layer comprising a display signal trace (111); a second conductive layer located on one side of the substrate (10), the second conductive layer comprising a touch-control trace (121), and at least part of the vertical projection of the touch-control trace (121) on the substrate (10) overlapping at least part of the vertical projection of the display signal trace (111) on the substrate (10); and a third conductive layer, the third conductive layer being located between the first conductive layer and the second conductive layer, and comprising a shielding structure (131), wherein the shielding structure (131) is configured to access a fixed electrical signal, and the shielding structure (131) is arranged between the display signal trace (111) and the touch-control trace (121), the vertical projections of which on the substrate (10) overlapping.

Description

Display panel and display device

[0001] This application claims priority to Chinese Patent Application No. 202410692300.4, filed with the Chinese Patent Office on May 30, 2024, and Chinese Patent Application No. 202410796437.4, filed with the Chinese Patent Office on June 19, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, such as display panels and display devices. Background Technology

[0003] Organic light-emitting diode (OLED) displays have advantages such as active light emission, wide viewing angle, wide color gamut, high brightness, fast response speed, low power consumption, and flexible structure, and are becoming increasingly popular in the market.

[0004] In order to make display panels lighter and thinner to accommodate future foldable and rollable products, touch technology has been developed. However, display panels with touch functionality are prone to display or touch malfunctions. Summary of the Invention

[0005] This application provides a display panel and a display device to improve display defects and touch defects, thereby enhancing display and touch performance.

[0006] This application provides a display panel, including:

[0007] Substrate;

[0008] A first conductive layer is located on one side of the substrate, and the first conductive layer includes display signal traces;

[0009] A second conductive layer is located on one side of the substrate. The second conductive layer includes touch traces, at least a portion of the vertical projection of the touch traces on the substrate overlaps with at least a portion of the vertical projection of the display signal traces on the substrate.

[0010] A third conductive layer is located between the first conductive layer and the second conductive layer. The third conductive layer includes a shielding structure configured to receive a fixed electrical signal. The shielding structure is disposed between the display signal trace and the touch trace whose vertical projections on the substrate overlap. The vertical projections of the touch trace, the display signal trace, and the shielding structure on the substrate at least partially overlap.

[0011] This application provides a display device including the display panel described in any of the above claims.

[0012] The technical solution of this application embodiment provides a shielding structure between touch traces and display signal traces that overlap in vertical projection on the substrate. The shielding structure is connected to a fixed electrical signal, so that the potential on the shielding structure remains unchanged, thereby playing a shielding role. This reduces signal interference between touch traces and display signal traces, thereby improving touch and display defects of the display panel and enhancing the display effect of the display panel. Attached Figure Description

[0013] Figure 1 is a cross-sectional structural diagram of a display panel provided in an embodiment of this application;

[0014] Figure 2 is a wiring diagram of a display panel provided in an embodiment of this application;

[0015] Figure 3 is a top view of a display panel provided in an embodiment of this application;

[0016] Figure 4 is a cross-sectional view of a display panel provided in an embodiment of this application;

[0017] Figure 5 is a top view of an organic planarization layer in a display panel provided in an embodiment of this application;

[0018] Figure 6 is a top view of another display panel provided in an embodiment of this application;

[0019] Figure 7 is a top view of an organic planarization layer in a display panel provided in an embodiment of this application;

[0020] Figure 8 is a top view of another display panel provided in an embodiment of this application;

[0021] Figure 9 is a cross-sectional view of another display panel provided in an embodiment of this application;

[0022] Figure 10 is a top view of an organic planarization layer of another display panel provided in an embodiment of this application;

[0023] Figure 11 is a top view of another display panel provided in an embodiment of this application;

[0024] Figure 12 is a top view of an organic planarization layer of another display panel provided in an embodiment of this application;

[0025] Figure 13 is a top view of another display panel provided in an embodiment of this application;

[0026] Figure 14 is a top view of another display panel provided in an embodiment of this application;

[0027] Figure 15 is a top view of another display panel provided in an embodiment of this application;

[0028] Figure 16 is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0029] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, including, in addition to the series of steps or units shown in the embodiments of this application, other processes, methods, systems, products, and devices not explicitly listed in this series of steps or units, or other steps or units inherent to these processes, methods, systems, products, or devices.

[0030] Signal interference can occur between touch traces and display signal traces located on different layers and whose vertical projections on the substrate overlap. Since touch traces and display signal traces, like data traces, transmit signals simultaneously when the display panel is driven, interference can occur between them due to signal coupling, leading to display or touch malfunctions.

[0031] This application proposes the following solution:

[0032] Figure 1 is a cross-sectional structural diagram of a display panel provided in an embodiment of this application. Referring to Figure 1, the display panel includes:

[0033] Substrate 10;

[0034] A first conductive layer is located on one side of the substrate 10, and the first conductive layer includes display signal traces 111;

[0035] The second conductive layer is located on one side of the substrate 10. The second conductive layer includes a touch trace 121, at least a portion of the vertical projection of the touch trace 121 on the substrate 10 overlaps with at least a portion of the vertical projection of the display signal trace 111 on the substrate.

[0036] The third conductive layer is located between the first and second conductive layers. The third conductive layer includes a shielding structure 131, which is configured to receive a fixed electrical signal. The shielding structure 131 is disposed between the display signal trace 111 and the touch trace 121, whose vertical projections on the substrate 10 overlap. The vertical projections of the touch trace 111, the display signal trace 121, and the shielding structure 131 on the substrate 10 at least partially overlap.

[0037] The substrate 10 can be a rigid substrate formed of at least one polymer material such as glass or glass fiber reinforced plastic, or a flexible substrate formed of at least one material such as polyimide (PI), polyethylene naphthalate (PEN), or polyethylene terephthalate (PET). The display signal trace 111 can be a data trace providing data voltage, or a trace providing scanning signals or light emission control signals. The first conductive layer can be located on the side of the second conductive layer closer to the substrate 10, that is, the display signal trace 111 is located below the touch trace 121; alternatively, the first conductive layer can be located on the side of the second conductive layer away from the substrate, that is, the touch trace 121 is located below the display signal trace 111. In this embodiment, the first conductive layer is exemplarily shown as being located on the side of the second conductive layer closer to the substrate 10. The first conductive layer may include multiple display signal traces 111, and the second conductive layer may include multiple touch signal traces 121. At least one of the multiple touch traces 112 overlaps with the vertical projection of the display signal traces 111 onto the substrate 10. The third conductive layer includes at least one shielding structure 131, with shielding structures 131 provided between both the overlapping touch traces 112 and the display signal traces 111 on the substrate.

[0038] During the wiring process, because the touch trace 121 and the display signal trace 111 are located on different layers and overlap at least partially in the thickness direction of the display panel, their signals will interfere due to coupling. Therefore, a shielding structure 131 is provided between the touch trace 121 and the display signal trace 111, whose vertical projections overlap on the substrate 10, to reduce the interference between the touch trace 121 and the display signal trace 111. In an optional embodiment, the area of ​​the shielding structure 131's vertical projection on the substrate is smaller than the area of ​​the overlapping portion of the vertical projections of the touch trace 121 and the display signal trace 111 on the substrate. That is, the shielding structure 131 is provided corresponding to a portion of the overlapping portion of the touch trace 121 and the display signal trace 111 in the thickness direction of the display panel, thereby reducing the signal interference between the touch trace 121 and the display signal trace 111. In another alternative embodiment, the area of ​​the vertical projection of the shielding structure 131 on the substrate is greater than or equal to the area of ​​the overlapping portion of the vertical projection of the touch trace 121 on the substrate and the vertical projection of the display signal trace 111 on the substrate. That is, the shielding structure 131 is provided at least for the portion of the touch trace 121 and the display signal trace 111 that overlap in the thickness direction of the display panel, so that the portion of the touch trace 121 and the display signal trace 111 that has signal interference is completely shielded by the shielding structure 131, thereby minimizing signal interference.

[0039] The shielding structure 131 is a conductive structure configured to receive a fixed electrical signal, ensuring that the potential on the shielding structure 131 remains constant. The shielding structure 131 effectively prevents interference from the display signal trace 111 to the touch signal on the touch trace 121, thereby guaranteeing touch accuracy. Simultaneously, the shielding structure 131 also effectively prevents interference from the touch trace 121 to the display signal trace 111, ensuring that the display signal trace 111 normally drives the display panel for display, thus improving display quality.

[0040] The technical solution of this application embodiment provides a shielding structure between touch traces and display signal traces that overlap in vertical projection on the substrate. The shielding structure is connected to a fixed electrical signal, so that the potential on the shielding structure remains unchanged, thereby playing a shielding role. This reduces signal interference between touch traces and display signal traces, thereby improving touch and display defects of the display panel and enhancing the display effect of the display panel.

[0041] Figure 2 is a wiring diagram of a display panel according to an embodiment of this application, and Figure 3 is a top view of a display panel according to an embodiment of this application. Referring to Figures 2 and 3, optionally, the display panel further includes:

[0042] The fourth conductive layer is located between the first conductive layer and the third conductive layer, or the fourth conductive layer is disposed in the same layer as the first conductive layer. When the metal layer containing the display signal traces is located below the metal layer containing the touch traces, the fourth conductive layer is located between the first conductive layer and the third conductive layer, or the fourth conductive layer is disposed in the same layer as the first conductive layer.

[0043] The fourth conductive layer includes at least one first conductive structure 141 and at least one second conductive structure 142, with a gap 1 between adjacent first conductive structures 141 and second conductive structures 142. The first conductive structure 141 is configured to be connected to a first fixed potential, and the second conductive structure 142 is configured to be connected to a second fixed potential.

[0044] The portion of the vertical projection of the display signal trace 111, the touch trace 121, and the shielding structure 131 on the substrate 10 overlaps within the vertical projection of the gap 1 on the substrate 10.

[0045] In one optional embodiment, the first conductive structure 141 is a first power bus configured to transmit a first power supply voltage, and the first fixed potential is the first power supply voltage. The second conductive structure 142 is a second power bus configured to transmit a second power supply voltage, and the second fixed potential is the second power supply voltage. The first fixed potential is greater than the second fixed potential. The shielding structure 131 can be electrically connected to the first conductive structure 141, and the shielding structure 131 is connected to a constant DC voltage signal, so that the fixed electrical signal is the first fixed potential. Alternatively, the shielding structure 131 can be electrically connected to the second conductive structure 142, and the shielding structure 131 is connected to a constant DC voltage signal, thereby making the fixed electrical signal the second fixed potential. The display panel includes a display area AA and a fan-out area FA. The fan-out area FA is located on one side of the display area, and the fan-out area FA is also provided with a driver chip 2 to provide touch signals to the touch trace 121 and display signals to the display signal trace 111. At least one touch trace 121 and at least one display signal trace 111 are provided within the display area AA. The touch trace 121 and the display signal trace 111 extend to the fan-out area FA to connect with the driver chip 2. A first conductive structure 141 and a second conductive structure 142 are located in the fan-out area FA of the display panel. There is a large gap 1 between the first conductive structure 141 and the second conductive structure 142. When the touch trace 121 in the display area needs to extend to the fan-out area FA, it will couple with the display signal trace 111 below as it passes through the gap 1 between the first conductive structure 141 and the second conductive structure 142, thus causing signal interference. Therefore, in the third conductive layer, a shielding structure 131 is provided in the portion corresponding to the gap 1 between the first conductive structure 141 and the second conductive structure 142 to shield the interference between the touch trace 121 and the display signal trace 111.

[0046] In one optional embodiment, when the fourth conductive layer is disposed on the same layer as the first conductive layer, the first conductive layer is located within the gap, and the interference between the touch traces located above the gap and the display signal traces located within the gap is shielded by the shielding structure. Alternatively, the fourth conductive layer is located between the first conductive layer and the third conductive layer, and the interference between the touch traces located above the gap and the display signal traces located below the gap is shielded by the shielding structure.

[0047] Referring again to Figures 2 and 3, optionally, the extension direction of the portion of the touch trace 121 corresponding to the gap 1 is the same as the extension direction of the portion of the display signal trace 111 corresponding to the gap 1, and the extension direction of the shielding structure 131 is the same as the extension direction of the portion of the touch trace 121 corresponding to the gap 1.

[0048] The length of the shielding structure 131 along the first direction X is greater than or equal to the greater of the lengths of the touch trace 121 and the display signal trace 111 along the first direction X, and / or the length of the shielding structure 131 along the second direction Y is greater than the greater of the lengths of the touch trace 121 and the display signal trace 111 along the second direction Y; wherein, the first direction Y is the extension direction of the portion of the touch trace 121 or the display signal trace 111 corresponding to the gap 1, and the second direction X is a direction perpendicular to the extension direction of the portion of the touch trace 121 or the display signal trace 111 corresponding to the gap 1.

[0049] The portion of touch trace 121 corresponding to gap 1 is the overlapping portion of the vertical projection of touch trace 121 onto the substrate and the vertical projection of gap 1 onto the substrate. The portion of display signal trace 111 corresponding to gap 1 is the overlapping portion of the vertical projection of display signal trace 111 onto the substrate and the vertical projection of gap 1 onto the substrate. In one optional embodiment, the extension directions of the portions of touch trace 121 and display signal trace 111 corresponding to gap 1 intersect both the row direction and column direction of the display panel, as shown by the direction of the first trace 1211 of touch trace 121 in FIG2. In another optional embodiment, the extension directions of the portions of touch trace 121 and display signal trace 111 corresponding to gap 1 are the column direction of the display panel, as shown by the direction of the second trace 1212 of touch trace 121 in FIG2. The row direction of the display panel is the row direction of the sub-pixel arrangement, and the column direction is the column direction of the sub-pixel arrangement.

[0050] The length of the shielding structure 131 along the first direction Y is greater than or equal to the greater of the lengths of the touch trace 121 and the display signal trace 111 along the first direction Y. This ensures that there is always a conductive layer with a fixed electrical signal connected below the touch trace 121. That is, a shielding structure 131 is provided below the touch trace 121 at the gaps, and a first conductive structure 141 or a second conductive structure 142 is provided below the touch trace 121 at the non-gap areas. Thus, the shielding structure 131, the first conductive structure 141, and the second conductive structure 142 achieve signal shielding and reduce signal interference between the touch trace 121 and the display signal trace 111. The length of the shielding structure 131 along the second direction X is greater than or equal to the greater of the lengths of the touch trace 121 and the display signal trace 111 along the second direction X. That is, the width of the shielding structure 131 is greater than the width of the touch trace 121 and the display signal trace 111, so that the shielding structure 131 completely shields the touch trace 121 and the display signal trace 111 in the second direction X, further reducing the interference of signals.

[0051] In this embodiment, by setting the length of the shielding structure 131 along the first direction Y to be greater than or equal to the greater of the lengths of the touch trace 121 and the display signal trace 111 along the first direction Y, and / or, setting the length of the shielding structure 131 along the second direction X to be greater than the greater of the lengths of the touch trace 121 and the display signal trace 111 along the second direction Y, the vertical projection of the portion of the touch trace 121 corresponding to the gap 1 on the substrate is located within the vertical projection of the shielding structure 131 on the substrate, and the vertical projection of the portion of the display signal trace 111 corresponding to the gap 1 on the substrate is located within the vertical projection of the shielding structure 131 on the substrate. The shielding structure 131 sufficiently shields the touch trace 121 and the display signal trace 111 in the gap 1 portion, reducing signal interference between the touch trace 121 and the display signal trace 111 in the gap, improving the display effect of the display panel, and avoiding the impact on touch.

[0052] The display panel includes multiple sub-pixels, which are disposed in the display area. In this embodiment and the following embodiments, the first direction X is the column direction of the sub-pixel arrangement and the second direction Y is the row direction of the sub-pixel arrangement.

[0053] Referring again to Figures 2 and 3, optionally, the display panel further includes an anode layer, with the third conductive layer disposed on the same layer as the anode layer. The anode layer includes multiple mutually insulated anodes, and the display panel also includes a light-emitting layer and a cathode layer. The anode, light-emitting layer, and cathode layer constitute a light-emitting device. In one optional embodiment, the third conductive layer is fabricated simultaneously with the anode layer. Having the third conductive layer on the same layer as the anode layer facilitates a thinner display panel. In another optional embodiment, the third conductive layer is disposed on the same layer as the anode layer and fabricated using the same process. That is, after the entire anode layer is fabricated, the anode layer located in the fan-out region FA is used as the third conductive layer, and the anode layer in the fan-out region FA is electrically isolated from the anode layer in the display region AA, avoiding the influence of the electrical signal connected to the anode layer in the fan-out region FA on the signal connected to the anode in the display region.

[0054] The gap 1 between the first conductive structure 141 and the second conductive structure 142 is covered by an anode layer and connected to a first fixed potential or a second fixed potential, so that when the touch trace 121 passes through the gap 1, the touch trace 121 and the display signal trace 111 are shielded by a shielding layer, and the signals do not interfere with each other.

[0055] In other alternative embodiments, the third conductive layer may be disposed in the same layer as other metal layers besides the first and second conductive layers, and this embodiment does not limit this.

[0056] Figure 4 is a cross-sectional view of a display panel provided in an embodiment of this application. Figure 4 is a cross-sectional view along AA' in Figure 3. Referring to Figures 3 and 4, optionally, the display panel further includes an organic planarization layer 15, which is located between the third conductive layer and the fourth conductive layer.

[0057] The vertical projection of the organic planarization layer 15 onto the substrate covers the vertical projection of the void 1 onto the substrate.

[0058] After the fourth conductive layer is prepared, a planarization layer needs to be prepared before the anode layer is prepared to ensure that the anode layer is relatively flat during subsequent preparation. The organic planarization layer is prepared using organic materials such as organic adhesives, which offer better planarization results compared to inorganic materials.

[0059] Referring again to Figures 3 and 4, the shielding structure 131 includes a planar portion 1311, a first side portion 1312, and a first edge portion 1313 that are electrically connected in sequence. The planar portion 1311 is disposed on the surface of the organic planarization layer 15 away from the substrate. The first edge portion 1313 is the side of the shielding structure 131 that is closer to the first preset conductive structure. The first preset conductive structure is one of the first conductive structure 141 or the second conductive structure 142. The first side portion 1312 is disposed on the sidewall of the organic planarization layer 15 that is closer to the first preset conductive structure.

[0060] At least a portion of the first edge portion 1313 is in contact with the first preset conductive structure.

[0061] For example, when the first preset conductive structure 142 is a first power bus and the second preset conductive structure is a second power bus, the first preset conductive structure can be the second conductive structure 142, and at least a portion of the first edge portion 1313 contacts the second conductive structure 142, thereby transmitting the second fixed potential transmitted on the second power bus to the shielding structure 131. Alternatively, the first preset conductive structure can be the first conductive structure 141, and at least a portion of the first edge portion 1313 contacts the first conductive structure 141, thereby transmitting the first fixed potential transmitted on the first power bus to the shielding structure 131.

[0062] The display panel also includes an inorganic layer 20, which is disposed between the substrate and the fourth conductive layer. The organic planarization layer 15 is prepared using organic adhesive. During the formation of the anode layer, the display panel needs to undergo an annealing operation. During annealing, moisture is generated in the organic planarization layer 15. Since moisture cannot be transported between the metal and inorganic layers, the portion of the organic planarization layer 15 covering the anode layer and the portion corresponding to the gap 1 comes into contact with the inorganic layer 20, preventing moisture from escaping from the portion covered by the anode layer. In this embodiment, the organic adhesive can be partially removed on the side of the organic planarization layer 15 closest to the first preset conductive structure to achieve the overlap between the shielding structure 131 and the first preset conductive structure. On the side of the organic planarization layer 15 away from the first preset conductive structure, the planarization layer 15 is retained, allowing moisture to escape from the side of the organic planarization layer 15 away from the first preset conductive structure, preventing the anode layer from detaching due to moisture accumulation. The arrows in Figures 3 and 4 indicate the direction of moisture transport.

[0063] The display panel also includes a pixel defining layer 16, a first inorganic encapsulation layer 17, an organic encapsulation layer 18, and a second inorganic encapsulation layer 19, which are stacked on the side of the third conductive layer away from the substrate. As shown in FIG4, in this embodiment, the second conductive layer 12 is located on the side of the second inorganic encapsulation layer 19 away from the substrate.

[0064] Figure 5 is a top view of an organic planarization layer in a display panel provided in an embodiment of this application. Referring to Figures 3, 4 and 5, optionally, the vertical projection of the first edge portion 1313 on the substrate does not overlap with the vertical projection of the organic planarization layer 15 on the substrate.

[0065] In order to achieve electrical connection between the shielding structure 131, i.e. the anode layer, located on the organic planarization layer 15 and the first preset conductive structure, the first patterned region 151 of the organic planarization layer 15 corresponding to the first edge portion 1313 of the shielding structure is removed, and then the shielding structure 131 overlaps with the first preset conductive structure, such as the second conductive structure 142, at the first patterned region 151.

[0066] All the organic adhesive in the area corresponding to the first edge portion 1313 on the side of the organic planarization layer 15 near the second conductive structure 142 is removed, so that the contact area between the anode layer and the second preset conductive structure is larger, achieving a good electrical connection and ensuring stable access to fixed electrical signals on the shielding structure.

[0067] Figure 6 is a top view of another display panel provided in an embodiment of this application, and Figure 7 is a top view of an organic planarization layer in another display panel provided in an embodiment of this application. Figure 4 can also be a cross-sectional view along AA' in Figure 6. Referring to Figures 4, 6 and 7, optionally, at least one first patterned region 151 is provided in the portion of the organic planarization layer 15 corresponding to the first edge portion 1313. The vertical projection of the first patterned region 151 on the substrate does not overlap with the vertical projection of the organic planarization layer 15 on the substrate. That is, the first patterned region 151 is not provided with the organic planarization layer 15, and the shielding structure 131 contacts the first preset conductive structure through the first patterned region 151.

[0068] The vertical projection of the first patterned region 151 onto the substrate is a circle or a rectangle.

[0069] The first patterned region 151 can be a porous structure, a block structure, or a strip structure; this embodiment is not limited to any particular type. The vertical projection of the portion of the organic planarization layer 15 corresponding to the first edge portion 1313 on the substrate overlaps with the projection of the first edge portion 1313 on the substrate. Compared to the previous embodiment where the portion of the organic planarization layer 15 corresponding to the first edge portion 1313 was completely removed, in this embodiment, only a portion of the portion of the organic planarization layer 15 corresponding to the first edge portion 1313 is removed. This allows for a larger area of ​​the organic planarization layer, resulting in a larger area for water vapor to escape from the organic planarization layer 14, and a more secure adhesion of the anode layer to the organic planarization layer.

[0070] When the potentials of the first preset conductive structure and the second preset conductive structure are different or the same, the structure shown in Figure 3 or Figure 6 above can be used to connect the shielding structure 131 to one side of the conductive structure.

[0071] When the first conductive structure and the second conductive structure are connected to the same potential, that is, when the first fixed potential is equal to the second fixed potential, the shielding structure 131 and the conductive structure can also be overlapped on both sides. Figure 8 is a top view of another display panel provided in the embodiment of this application, and Figure 9 is a cross-sectional view of another display panel provided in the embodiment of this application. Figure 9 is a cross-sectional view along AA' in Figure 8. Referring to Figures 8 and 9, optionally, the shielding structure 131 also includes a second side portion 1314 and a second edge portion 1315. The second edge portion 1315 is the side of the shielding structure 131 that is close to the second preset conductive structure. The second preset conductive structure is the first conductive structure or the other of the second conductive structure. The second side portion is disposed on the side wall of the organic planarization layer 15 that is close to the second preset conductive structure.

[0072] At least a portion of the second edge portion 1315 is in contact with the second preset conductive structure.

[0073] In this embodiment, the first preset conductive structure is exemplarily shown as the second conductive structure 142, and the second preset conductive structure is exemplarily shown as the first conductive structure 141. The first conductive structure 141 is a second power bus, and the first fixed potential is equal to the second fixed potential. The shielding structure 131 is double-sided overlapping through the first side portion 1312, the first edge portion 1313, the second side portion 1314, and the second edge portion 1315, so that the second fixed potential transmitted on the second power bus is transmitted to the shielding structure 131, making the fixed electrical signal either the first fixed potential or the second fixed potential. In other embodiments, the first conductive structure 141 is the first power bus, the second conductive structure 142 is the first power bus, the first fixed potential is equal to the second fixed potential, and the shielding structure 131 is double-sided overlapping through the first side portion 1312, the first edge portion 1313, the second side portion 1314, and the second edge portion 1315, so that the first fixed potential transmitted on the first power bus is transmitted to the shielding structure 131, making the fixed electrical signal either the first fixed potential or the second fixed potential. Alternatively, the first conductive structure 141 is an initialization signal line, the second conductive structure 142 is an initialization signal line, the first fixed potential is equal to the second fixed potential, and the shielding structure 131 is double-sided overlapping through the first side portion 1312, the first edge portion 1313, the second side portion 1314 and the second edge portion 1315, so that the first fixed potential transmitted on the initialization signal line is transmitted to the shielding structure 131, so that the fixed electrical signal is the first fixed potential or the second fixed potential.

[0074] Figure 10 is a top view of an organic planarization layer of a display panel provided in an embodiment of this application. Referring to Figures 8, 9, and 10, optionally, the vertical projection of the second edge portion 1315 on the substrate does not overlap with the vertical projection of the organic planarization layer 15 on the substrate. To achieve electrical connection between the shielding structure 131, i.e., the anode layer, located on the organic planarization layer 15, and the second preset conductive structure, the second patterned region 152 corresponding to the second edge portion 1315 of the shielding structure in the organic planarization layer 15 is removed, thereby causing the shielding structure 131 to overlap with the second preset conductive structure at the second patterned region 152. The partially removed portion of the organic planarization layer covers the anode layer, preventing moisture from escaping. Moisture in the organic planarization layer 15 can only be discharged from the portion of the organic planarization layer 15 that has not been removed.

[0075] The organic planarization layer 15 is removed from the area corresponding to the second edge portion 1315 on the side close to the second conductive structure 142, so that the contact area between the anode layer and the second preset conductive structure is larger, achieving a good electrical connection and ensuring stable access to fixed electrical signals on the shielding structure.

[0076] Figure 11 is a top view of another display panel provided in an embodiment of this application, and Figure 12 is a top view of the organic planarization layer of another display panel provided in an embodiment of this application. Figure 9 can also be a cross-sectional view corresponding to AA' in Figure 11. Referring to Figures 9, 11 and 12, optionally, at least one second patterned region 152 is provided in the portion of the organic planarization layer 15 corresponding to the second edge portion 1315. The vertical projection of the second patterned region 152 on the substrate does not overlap with the vertical projection of the organic planarization layer 15 on the substrate. That is, the second patterned region 152 is not provided with the organic planarization layer 15, and the shielding structure 131 contacts the second preset conductive structure through the second patterned region 152.

[0077] The vertical projection of the second patterned region 152 onto the substrate is a circle or a rectangle.

[0078] In order to achieve electrical connection between the shielding structure 131, i.e. the anode layer, located on the organic planarization layer 15 and the second preset conductive structure, the second patterned region 152 of the organic planarization layer 15 corresponding to the second edge portion 1315 of the shielding structure 131 is removed, and then the shielding structure 131 overlaps with the second preset conductive structure at the patterned region 152.

[0079] In this embodiment, when the first fixed potential is equal to the second fixed potential, the shielding structure can overlap the conductive structure on both sides. In an optional implementation, the organic planarization layer 15 includes at least one first patterned region 151 on the side near the first preset conductive structure and at least one second patterned region 152 on the side near the second preset conductive structure, so as to simultaneously take into account the stability of the overlap and the diversity of water vapor discharge paths, ensuring that when the shielding structure 131 stably receives the fixed electrical signal, the water vapor in the organic planarization layer can also be discharged well, avoiding the shielding structure from falling off.

[0080] Referring to Figure 2, optionally, the third conductive layer also includes a bridging structure, the shielding structure is electrically connected to the bridging structure, and the bridging structure is connected to a fixed electrical signal;

[0081] The vertical projection of the shielding structure onto the substrate lies within the vertical projection of the organic planarization layer onto the substrate.

[0082] The fan-out area FA includes a trace area FA1 with touch traces and a blank area FA2 without touch traces. In addition to the connection between the shielding structure and the conductive structure in the trace area FA1 as shown in the above embodiment, a fixed electrical signal can also be connected to the shielding structure in the blank area FA2 through a bridging structure. This makes it possible for the organic planarization layer of the trace area FA1 to be partially removed in order to achieve the connection between the shielding structure and the conductive structure, resulting in a larger area of ​​the organic planarization layer in the trace area FA1, which is beneficial for the discharge of moisture during the annealing operation.

[0083] Figure 13 is a top view of another display panel provided in an embodiment of this application; Figure 14 is a top view of another display panel provided in an embodiment of this application; Figure 15 is a top view of another display panel provided in an embodiment of this application. Optionally, the shielding structure 131 is a full-surface structure as shown in Figure 13, meaning that no openings are made on the anode layer to improve the shielding effect. Alternatively, the shielding structure 131 is a strip structure, with the extension direction of the shielding structure 131 being the same as the extension direction of the touch traces or display signal traces. The shielding structure 131 is correspondingly arranged with touch traces or display signal traces whose vertical projections on the substrate overlap. Alternatively, the shielding structure 131 is a full-surface structure, including at least one aperture structure 1311. The vertical projection of the aperture structure 1311 on the substrate is located within the vertical projection of the gap region between two adjacent touch traces 121 on the substrate, or within the vertical projection of the gap region between two adjacent display signal traces on the substrate. Removing the upper part of the shielding structure 131 allows moisture in the organic planarization layer 15 located below the shielding structure 131 to be discharged from the perforated structure 1311. Consequently, when the shielding structure 131 is set for a longer distance along the extension direction of the touch trace 121, moisture in the organic planarization layer 15 can be discharged from the perforated structure 1311 when it cannot be transmitted to the side of the organic planarization layer 15.

[0084] The display panels in the above embodiments are applicable to 4-metal processes or 3-metal processes, and there is no limitation on the latter.

[0085] This application also provides a display device. FIG16 is a schematic diagram of the structure of a display device provided in this application. Referring to FIG16, the display device 3 includes the display panel in any of the above embodiments. The display device 3 can be a mobile phone as shown in FIG16, or a computer, television, smart wearable display device, etc. This application does not make any special limitation in this regard.

[0086] It should be understood that the various processes shown above can be used to rearrange, add, or delete steps. For example, the multiple steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

Claims

1. A display panel, comprising: Substrate; A first conductive layer is located on one side of the substrate, and the first conductive layer includes display signal traces; A second conductive layer is located on one side of the substrate. The second conductive layer includes touch traces, at least a portion of the vertical projection of the touch traces on the substrate overlaps with at least a portion of the vertical projection of the display signal traces on the substrate. A third conductive layer is located between the first conductive layer and the second conductive layer. The third conductive layer includes a shielding structure configured to receive a fixed electrical signal. The shielding structure is disposed between the display signal trace and the touch trace whose vertical projections on the substrate overlap. The vertical projections of the touch trace, the display signal trace, and the shielding structure on the substrate at least partially overlap.

2. The display panel according to claim 1, further comprising: A fourth conductive layer, wherein the first conductive layer is located on the side of the second conductive layer near the substrate, and the fourth conductive layer is located between the first conductive layer and the third conductive layer, or the fourth conductive layer is disposed in the same layer as the first conductive layer; The fourth conductive layer includes a first conductive structure and a second conductive structure, with gaps between adjacent first conductive structures and second conductive structures. The first conductive structure is configured to be connected to a first fixed potential, and the second conductive structure is configured to be connected to a second fixed potential. The portion where the vertical projections of the display signal traces, the touch traces, and the shielding structure overlap on the substrate is located within the vertical projection of the gap on the substrate.

3. The display panel of claim 2, wherein, The first conductive layer is located on the side of the second conductive layer near the substrate, the fourth conductive layer is disposed in the same layer as the first conductive layer, and the first conductive layer is located within the gap.

4. The display panel of claim 2, wherein, The first conductive structure includes a first power bus, the second conductive structure includes a second power bus, the first fixed potential is greater than the second fixed potential, and the fixed electrical signal is either the first fixed potential or the second fixed potential.

5. The display panel of claim 2, wherein, The first conductive structure includes a first power bus, the second conductive structure includes a first power bus, the first fixed potential is equal to the second fixed potential, and the fixed electrical signal is either the first fixed potential or the second fixed potential.

6. The display panel of claim 2, wherein, The first conductive structure includes a second power bus, the second conductive structure includes a second power bus, the first fixed potential is equal to the second fixed potential, and the fixed electrical signal is the first fixed potential or the second fixed potential.

7. The display panel of claim 2, wherein, The first conductive structure includes an initialization signal line, the second conductive structure includes an initialization signal line, the first fixed potential is equal to the second fixed potential, and the fixed electrical signal is either the first fixed potential or the second fixed potential.

8. The display panel according to any one of claims 4-7, wherein, The first conductive structure and the second conductive structure are located in the fan-out area of ​​the display panel.

9. The display panel of claim 2, wherein, The extension direction of the touch trace corresponding to the gap is the same as the extension direction of the display signal trace corresponding to the gap, and the extension direction of the shielding structure is the same as the extension direction of the touch trace corresponding to the gap. The length of the shielding structure along the first direction is greater than or equal to the greater of the lengths of the touch trace and the display signal trace along the first direction; or, the length of the shielding structure along the second direction is greater than the greater of the lengths of the touch trace and the display signal trace along the second direction; or, the length of the shielding structure along the first direction is greater than or equal to the greater of the lengths of the touch trace and the display signal trace along the first direction; and the length of the shielding structure along the second direction is greater than the greater of the lengths of the touch trace and the display signal trace along the second direction; wherein, the first direction is the extension direction of the portion of the touch trace or the display signal trace corresponding to the gap, and the second direction is a direction perpendicular to the extension direction of the portion of the touch trace or the display signal trace corresponding to the gap; The display panel includes multiple sub-pixels, the first direction is the column direction of the sub-pixel arrangement, and the second direction is the row direction of the sub-pixel arrangement.

10. The display panel according to claim 2 further includes an anode layer, wherein the third conductive layer is disposed in the same layer as the anode layer.

11. The display panel according to claim 10, further comprising: An organic planarization layer is located between the third conductive layer and the fourth conductive layer; The vertical projection of the organic planarization layer on the substrate covers the vertical projection of the voids on the substrate.

12. The display panel according to claim 11, wherein, The shielding structure includes a planar portion, a first side portion, and a first edge portion that are electrically connected in sequence. The planar portion is disposed on the surface of the organic planarization layer away from the substrate. The first edge portion is the side of the shielding structure that is closer to the first preset conductive structure. The first preset conductive structure is one of the first conductive structure or the second conductive structure. The first side portion is disposed on the sidewall of the organic planarization layer that is closer to the first preset conductive structure. At least a portion of the first edge portion is in contact with the first preset conductive structure.

13. The display panel of claim 12, wherein, The vertical projection of the first edge portion on the substrate does not overlap with the vertical projection of the organic planarization layer on the substrate.

14. The display panel of claim 12, wherein, The organic planarization layer has at least one first patterned region corresponding to the portion of the first edge. The first patterned region does not have the organic planarization layer. The shielding structure contacts the first preset conductive structure through the first patterned region. The vertical projection of the first patterned region onto the substrate is a circle or a rectangle.

15. The display panel of claim 13 or 14, wherein, The first fixed potential is equal to the second fixed potential; The shielding structure further includes a second side portion and a second edge portion. The second edge portion is the side of the shielding structure that is close to the second preset conductive structure. The second preset conductive structure is the first conductive structure or the other of the second conductive structure. The second side portion is disposed on the side wall of the organic planarization layer that is close to the second preset conductive structure. At least a portion of the second edge portion is in contact with the second preset conductive structure.

16. The display panel of claim 15, wherein, The vertical projection of the second edge portion on the substrate does not overlap with the vertical projection of the organic planarization layer on the substrate.

17. The display panel according to claim 15, wherein, The organic planarization layer has at least one second patterned region corresponding to the second edge portion, and the second patterned region is not provided with the organic planarization layer. The shielding structure contacts the second preset conductive structure through the second patterned region. The vertical projection of the second patterned region onto the substrate is a circle or a rectangle.

18. The display panel according to claim 11, wherein, The third conductive layer further includes a bridging structure, the shielding structure is electrically connected to the bridging structure, and the bridging structure is connected to the fixed electrical signal; The vertical projection of the shielding structure onto the substrate lies within the vertical projection of the organic planarization layer onto the substrate.

19. The display panel according to claim 1, wherein, The shielding structure includes a single-surface structure; Alternatively, the shielding structure includes a strip structure, and the extending direction of the shielding structure is the same as the extending direction of the touch trace or the display signal trace; Alternatively, the shielding structure may include a full-surface structure, the shielding structure may include at least one perforated structure, the vertical projection of the at least one perforated structure on the substrate may be located within the vertical projection of the gap region between two adjacent touch traces on the substrate, or may be located within the vertical projection of the gap region between two adjacent display signal traces on the substrate.

20. A display device comprising the display panel according to any one of claims 1-19.

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