Display panel and display device

Abstract

The invention discloses a display panel and a display device, and the display panel comprises a substrate; the array layer is arranged on one side of the substrate, and the array layer comprises a fixed potential signal line; the touch signal lines and at least part of the fixed potential signal lines are arranged on the same layer, and at least part of each touch signal line is arranged between every two adjacent fixed potential signal lines; the light-emitting function layer is arranged on the side, away from the substrate, of the array layer. According to the display panel, the two fixed potential signal lines are used for signal shielding, mutual interference between touch signals of the touch signal lines in the array layer and display signals of other signal lines in the array layer is effectively shielded, poor touch and display are prevented, and the use performance of the display panel is effectively improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat display panels based on technologies such as Light Emitting Diode (LED) are widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display panels.

[0003] However, the performance of current OLED display products needs to be improved.

[0004] Therefore, a new display panel and display device are urgently needed. Summary of the invention

[0005] The embodiments of the present application provide a display panel and a display device, which utilize two fixed potential signal lines as signal shielding to effectively shield the mutual interference between the touch signals of the touch signal lines in the array layer and the display signals of other signal lines in the array layer, thereby preventing poor touch and display, and effectively improving the performance of the display panel.

[0006] On the one hand, an embodiment of the present application provides a display panel, comprising: a substrate; an array layer, arranged on one side of the substrate, the array layer comprising fixed potential signal lines; a touch signal line, which is arranged in the same layer as at least part of the fixed potential signal lines, and the touch signal line is at least partly arranged between two adjacent fixed potential signal lines; and a light-emitting functional layer, which is arranged on a side of the array layer away from the substrate.

[0007] According to one aspect of the present application, the fixed potential signal line includes at least one of a high-level power signal line, a low-level power signal line and an initialization power signal line; preferably, the high-level power signal line, the low-level power signal line and the initialization power signal line have the same extension direction in at least part of the area.

[0008] According to one aspect of the present application, the touch signal line is located between the two fixed potential signal lines that transmit the same signal; preferably, the touch signal line is located between the two high level power signal lines.

[0009] According to one aspect of the present application, the touch signal line is located between two of the fixed potential signal lines that transmit different signals; preferably, the touch signal line is located between adjacent high-level power signal lines and the low-level power signal lines; or, the touch signal line is located between adjacent high-level power signal lines and the initialization power signal lines.

[0010] According to one aspect of the present application, the array layer also includes a data signal line, and the data signal line, the fixed potential signal line, and the touch signal line are arranged in the same layer, and in a direction parallel to the plane where the substrate is located, at least one fixed potential signal line is arranged between the data signal line and the touch signal line.

[0011] According to one aspect of the present application, along the extension direction perpendicular to the touch signal line, the distance between the touch signal line and the adjacent fixed potential signal line is equal everywhere; preferably, along the extension direction perpendicular to the touch signal line, the distance between the touch signal line and the adjacent fixed potential signal line is greater than or equal to 2μm and less than or equal to 5μm.

[0012] According to one aspect of the present application, the array layer includes at least two conductive layers and an insulating layer disposed between two adjacent conductive layers; the fixed potential signal line is disposed on the same layer as any one of the at least two conductive layers.

[0013] According to one aspect of the present application, the display panel includes adjacent display areas and non-display areas, the display areas include adjacent first display areas and second display areas; the light-emitting functional layer includes light-emitting units, and the arrangement density of the light-emitting units in the first display area is greater than the arrangement density of the light-emitting units in the second display area; the touch signal line is at least provided in the second display area; preferably, the low-level power signal line and the initialization power signal line are at least provided in the second display area.

[0014] According to one aspect of the present application, it also includes a touch electrode layer, which is arranged on the side of the light-emitting functional layer away from the substrate. The touch electrode layer includes a touch electrode block, and the touch signal line is electrically connected to the touch electrode block.

[0015] Another aspect of the present invention provides a display device, comprising: the display panel in any one of the above embodiments.

[0016] Compared with the prior art, the display panel provided by the embodiment of the present invention includes a substrate, an array layer, a touch signal line and a light-emitting functional layer. The touch signal line is integrated in the array layer to reduce the overall thickness of the display panel and improve the integration. The touch signal line and the fixed potential signal line are arranged in the same layer, and the touch signal line is at least partially arranged between two adjacent fixed potential signal lines, that is, the fixed potential signal line is a voltage signal of a fixed potential, which will not be affected by the touch signal line signal, and the two fixed potential signal lines can be used as signal shielding, effectively shielding the touch signal of the touch signal line in the array layer from interference with the display signal of other signal lines in the array layer, thereby preventing touch and display defects, and effectively improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0019] Figure 2 An embodiment provides Figure 1 Schematic diagram of the cross-sectional structure at BB in the middle;

[0020] Figure 3 is a relative position diagram of a touch signal line and a fixed potential signal line provided by an embodiment;

[0021] Figure 4 is a relative position diagram of a touch signal line and a fixed potential signal line provided by another embodiment;

[0022] Figure 5 This is a relative position diagram of a touch signal line and a fixed potential signal line provided by yet another embodiment.

[0023] In the attached figure:

[0024] 1-substrate; 2-array layer; 3-fixed potential signal line; 31-high level power signal line; 32-low level power signal line; 33-initialization power signal line; 4-touch signal line; 5-luminescent functional layer; 51-first electrode layer; 52-luminescent layer; 53-second electrode layer; 6-data signal line; 7-touch electrode layer; 71-touch electrode block; F-packaging layer; M1-first conductive layer; M2-second conductive layer; M3-third conductive layer; C-storage capacitor; C1-first plate; C2-second plate; Y-active layer; G-gate; S-source; D-drain. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0027] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0028] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for which protection is required) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0029] The present application provides a display panel and a display device. Figures 1 to 5 Various embodiments of a display panel and a display device are described.

[0030] See also Figures 1 to 3 A display panel provided in an embodiment of the present application includes: a substrate 1; an array layer 2, which is arranged on one side of the substrate 1, and the array layer 2 includes fixed potential signal lines 3; a touch signal line 4, which is arranged in the same layer as at least part of the fixed potential signal lines 3, and the touch signal line 4 is at least partly arranged between two adjacent fixed potential signal lines 3; a light-emitting functional layer 5, which is arranged on the side of the array layer 2 away from the substrate 1.

[0031] The display panel provided by the embodiment of the present invention includes a substrate 1, an array layer 2, a touch signal line 4 and a light-emitting functional layer 5. The touch signal line 4 is integrated into the array layer 2 to reduce the overall thickness of the display panel and improve the integration. The touch signal line 4 and at least part of the fixed potential signal line 3 are arranged in the same layer, and the touch signal line 4 is at least partially arranged between two adjacent fixed potential signal lines 3, that is, the fixed potential signal line 3 is a fixed potential voltage signal, which will not be affected by the signal of the touch signal line 4, and the two fixed potential signal lines 3 can be used as signal shielding, effectively shielding the touch signal of the touch signal line 4 in the array layer 2 from the display signal of other signal lines in the array layer 2, thereby preventing touch and display defects, and effectively improving the performance of the display panel.

[0032] In this embodiment, the touch signal line 4 and the fixed potential signal line 3 are arranged in the same layer, which only represents the relative position relationship between the two. The materials and preparation processes of the two can be the same to reduce costs, or different to facilitate preparation, and there is no special limitation.

[0033] Optionally, the substrate 1 may be a hard substrate, such as a glass substrate, or a flexible substrate, and its material may be polyimide, polystyrene, polyethylene terephthalate, polyparaxylene, polyethersulfone or polyethylene naphthalate. The substrate 1 is mainly used to support the device disposed thereon.

[0034] Optionally, the array layer 2 includes at least two conductive layers and an insulating layer disposed between two adjacent conductive layers; the fixed potential signal line 3 is disposed on the same layer as any one of the at least two conductive layers.

[0035] According to actual needs, the array layer 2 can be provided with two, three, four or more layers for setting pixel circuits and signal lines. The fixed potential signal line 3 can be provided on the same layer as any layer in the conductive layer, and the fixed potential signal line 3 can be formed by patterning the conductive layer.

[0036] The material of the conductive layer may include at least one of copper, silver, aluminum, molybdenum, and nickel, that is, the material of the conductive layer may be a metal element, an alloy, or a metal stacked structure. For example, the conductive layer may include titanium, aluminum, a titanium stacked structure, a copper-nickel alloy, or molybdenum, aluminum, and a molybdenum stacked structure.

[0037] See also Figure 2 , Optionally, the array layer 2 may include a driving circuit. For example, the array layer 2 may include a first conductive layer M1, a second conductive layer M2, and a third conductive layer M3 which are arranged on one side of the substrate 1 and are stacked. An insulating layer is provided between adjacent conductive film layers. Exemplarily, the pixel driving circuit provided in the array layer 2 includes a transistor and a storage capacitor C. The transistor includes an active layer Y, a gate G, a source S, and a drain D. The materials of the source S and the gate G may include a combination of one or more of molybdenum, titanium, aluminum, copper, etc. The gate G of the transistor is generally used to receive a control signal so that the transistor is turned on or off under the control of the control signal. One of the source S and the drain D of the thin film transistor is connected to the light-emitting unit to control the normal light emission of the light-emitting unit.

[0038] The storage capacitor C includes a first plate C1 and a second plate C2. As an example, the gate G and the first plate C1 may be located in the first conductive layer M1, the second plate C2 may be located in the second conductive layer M2, and the source S and the drain D may be located in the third conductive layer M3.

[0039] The touch signal line 4 and the fixed potential signal line 3 can be arranged in the same layer as any one of the first conductive layer M1, the second conductive layer M2, and the third conductive layer M3. For example, the touch signal line 4 and the fixed potential signal line 3 can be arranged in the third conductive layer M3 located at the top layer to reduce the distance between the touch signal line 4 and the user touch film layer to ensure the accuracy of touch.

[0040] Optionally, the light-emitting functional layer 5 includes one or more of an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer and a hole injection layer. It can be selected according to the specific type of the light-emitting layer 52, and there is no special limitation. The electron injection layer, the electron transport layer, and the hole blocking layer can be arranged between the second electrode layer 53 and the light-emitting material layer. The electron blocking layer, the hole transport layer and the hole injection layer can be arranged between the first electrode layer 51 and the light-emitting material layer.

[0041] The material of the first electrode layer 51 is generally a material with a high work function to improve the hole injection efficiency, and may be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO) or a transparent conductive polymer (such as polyaniline), etc. For example, the first electrode layer 51 may be made of an ITO-Ag-ITO composite material, without special limitation.

[0042] The material of the second electrode layer 53 can be one of the metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), and can also be an alloy of the aforementioned metal materials, such as magnesium-silver alloy (Mg / Ag) and lithium-aluminum alloy (Li / Al), but this embodiment does not impose any limitation on this.

[0043] See also Figures 3 to 5 In some optional embodiments, the fixed potential signal line 3 includes at least one of a high level power signal line 31 , a low level power signal line 32 , and an initialization power signal line 33 .

[0044] Among them, the high-level power signal line 31 is the PVDD signal line. When the driving transistor is a PMOS transistor, the source is electrically connected to the high-level power signal line 31, and the second electrode layer 53 is electrically connected to the low-level power signal line 32, namely the PVSS signal line. When the driving transistor is an NMOS transistor, the source is connected to the low-level power signal line 32, and the second electrode layer 53 is electrically connected to the high-level power signal line 31. The initialization power signal line 33 is used to initialize the transistor and / or the first electrode layer 51, and is specifically set according to the pixel circuit form adopted by the display panel.

[0045] Since the high-level power signal line 31, the low-level power signal line 32 and the initialization power signal line 33 are all connected to a fixed potential, the touch signal line 4 can be shielded by any two of the high-level power signal line 31, the low-level power signal line 32 and the initialization power signal line 33 to avoid mutual interference between the touch signal line 4 and other non-fixed potential signal lines 3, such as the data line, namely the DATA signal line, which affects the touch or display effect.

[0046] Optionally, the touch signal line 4 is located between two fixed potential signal lines 3 that transmit the same signal to ensure the stability of signal transmission. For example, the touch signal line 4 is located between two high-level power signal lines 31, or the touch signal line 4 is located between two low-level power signal lines 32, or the touch signal line 4 is located between two initialization power signal lines 33, which is easy to prepare.

[0047] In some optional embodiments, considering that the wiring space is limited and the fixed potential signal lines 3 transmitting different signals may need to be electrically connected to different components, thus their wiring positions are restricted, the touch signal line 4 may be located between two fixed potential signal lines 3 transmitting different signals. According to the actual wiring, the touch signal line 4 may be located between adjacent high level power signal lines 31 and low level power signal lines 32, such as Figure 4 Or, the touch signal line 4 is located between the adjacent high-level power signal line 31 and the initialization power signal line 33, as shown in FIG. Figure 5 As shown, this reduces the difficulty of wiring and facilitates signal connection.

[0048] Of course, the touch signal line 4 may also be disposed between the low-level power signal line 32 and the initialization power signal line 33 , without any special limitation.

[0049] See also Figures 2 to 3 In some optional embodiments, the array layer 2 also includes a data signal line 6, and the data signal line 6 and the fixed potential signal line 3 and the touch signal line 4 are arranged in the same layer, and in a direction parallel to the plane where the substrate 1 is located, at least one fixed potential signal line 3 is provided between the data signal line 6 and the touch signal line 4.

[0050] It can be understood that the data signal line 6, namely the DATA signal line, is used to transmit data signals and control the light-emitting display of the light-emitting functional layer 5. However, the signal of the data signal line 6 varies, and the signal of the touch signal line 4 may interfere with the signal of the data signal line 6. Therefore, it is necessary to provide at least one fixed potential signal line 3 between the data signal line 6 and the touch signal line 4 in a direction parallel to the plane where the substrate 1 is located, so as to utilize the fixed potential signal line 3 to shield the interference of the touch signal on the data signal line 6 and ensure the display effect.

[0051] For example, a high-level power signal line 31 may be provided between the data signal line 6 and the touch signal line 4, or a low-level power signal line 32 may be provided between the data signal line 6 and the touch signal line 4, or an initialization power signal line 33 may be provided between the data signal line 6 and the touch signal line 4. Alternatively, at least two fixed potential signal lines 3 may be provided between the data signal line 6 and the touch signal line 4, which may be at least two fixed potential signal lines 3 transmitting the same signal or at least two fixed potential signal lines 3 transmitting different signals. For example, a high-level power signal line 31 and a low-level power signal line 32 may be provided between the data signal line 6 and the touch signal line 4.

[0052] See also Figure 4In some optional embodiments, along the extension direction perpendicular to the touch signal line 4, the distance between the touch signal line 4 and the adjacent fixed potential signal line 3 is equal everywhere to improve space utilization and avoid mutual interference between the touch signal line 4 and the potential signal line.

[0053] Optionally, along the extension direction perpendicular to the touch signal line 4, the distance between the touch signal line 4 and the adjacent fixed potential signal line 3 is greater than or equal to 2 μm and less than or equal to 5 μm, so as to meet the process precision requirements and facilitate the preparation, and avoid problems such as connection and short circuit between the touch signal line 4 and the adjacent fixed potential signal line 3 during preparation.

[0054] For example, along the extending direction perpendicular to the touch signal line 4 , the distance between the touch signal line 4 and the adjacent fixed potential signal line 3 may be equal to any one of 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, and 5 μm.

[0055] In some optional embodiments, the display panel includes adjacent display areas and non-display areas, the display area includes adjacent first display areas and second display areas; the light-emitting functional layer 5 includes light-emitting units, the arrangement density of the light-emitting units in the first display area is greater than the arrangement density of the light-emitting units in the second display area, and the touch signal line 4 is at least arranged in the second display area.

[0056] It should be noted that, since it is necessary to additionally set up the touch signal line 4 in the array layer 2, and the wiring space of the array layer 2 corresponds to the arrangement of the light-emitting units, in order to reserve space for the touch signal line 4, the light-emitting units need to be compressed, that is, the arrangement density of the light-emitting units is reduced, so that the distance between adjacent light-emitting units is larger, correspondingly, part of the space in the array layer 2 is reserved for setting the touch signal line 4, and the touch signal line 4 is at least set in the second display area.

[0057] Optionally, considering that the low-level power signal line 32 is usually set in the non-display area, if the low-level power signal line 32 is set in the display area to shield the touch signal line 4 signal, the low-level power signal line 32 also needs to be set in the second display area with more space.

[0058] In the present embodiment, the initialization power signal line 33, the low-level power signal line 32, and the high-level power signal line 31 have the same extension direction in at least part of the area, while in the prior art, the extension directions of the initialization power signal line 33 and the high-level power signal line 31 usually intersect, so the initialization power signal line 33 and the high-level power signal line 31 are usually arranged in different layers. Therefore, in order to accommodate the initialization power signal line 33 having the same extension direction as the high-level power signal line 31, the initialization power signal line 33 also needs to be arranged in the second display area with more spacious space.

[0059] See also Figure 2 In some optional embodiments, the display panel further includes a touch electrode layer 7, which is disposed on the side of the light-emitting functional layer 5 away from the substrate 1, and the touch electrode layer 7 includes a touch electrode block 71, and the touch signal line 4 is electrically connected to the touch electrode block 71.

[0060] In this embodiment, the touch electrode block 71 and the touch signal line 4 may be connected through vias in the display area or in the non-display area, without any special limitation.

[0061] Optionally, an encapsulation layer is further provided between the light-emitting functional layer 5 and the touch electrode layer 7. The encapsulation layer is used to encapsulate and protect the light-emitting layer 52. The encapsulation layer may include inorganic materials. The inorganic materials may specifically include silicon nitride, silicon oxide, silicon oxynitride and other materials, and may specifically be formed by a CVD (Chemical Vapor Deposition) process.

[0062] Optionally, the encapsulation layer F includes a first encapsulation layer, and a material of the first encapsulation layer includes an inorganic material.

[0063] Optionally, the encapsulation layer F further comprises a second encapsulation layer located on the side of the first encapsulation layer away from the substrate 1, and the material of the second encapsulation layer comprises an organic material. The organic material can be made of resin or polymer organic material, and can be formed by IJP (Inkjet printing) process.

[0064] Optionally, the encapsulation layer F also includes a third encapsulation layer located on the side of the second encapsulation layer away from the substrate 1, and the material of the third encapsulation layer includes an inorganic material. Continuing to add an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer F; in this embodiment, the material of the third encapsulation layer can be the same as or different from the material of the first encapsulation layer, and there is no special limitation.

[0065] Optionally, the material of the first encapsulation layer is the same as the material of the third encapsulation layer, so that the first encapsulation layer and the third encapsulation layer can be prepared using the same equipment, which can simplify the preparation process of the display panel.

[0066] Optionally, the touch electrode layer 7 may be disposed in the same layer as the first electrode layer 51 , or the touch electrode layer 7 may be disposed in the same layer as the second electrode layer 53 , so as to further reduce the thickness of the display panel.

[0067] The display panel provided in the embodiment of the present invention may be an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) or a micro flat display panel (Micro-OLED or Micro-LED).

[0068] The display panel provided in the embodiment of the present application can be applied to mobile phones, or any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present application does not make any special limitations on this.

[0069] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

[0070] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that: include: substrate; An array layer, disposed on one side of the substrate, the array layer comprising fixed potential signal lines; A touch signal line is arranged in the same layer as at least part of the fixed potential signal lines, and at least part of the touch signal line is arranged between two adjacent fixed potential signal lines; The light-emitting functional layer is arranged on the side of the array layer away from the substrate.

2. The display panel according to claim 1, characterized in that: The fixed potential signal line includes at least one of a high level power signal line, a low level power signal line, and an initialization power signal line; Preferably, the high-level power signal line, the low-level power signal line and the initialization power signal line extend in the same direction in at least a partial area.

3. The display panel according to claim 2, characterized in that: The touch signal line is located between the two fixed potential signal lines that transmit the same signal; Preferably, the touch signal line is located between the two high-level power signal lines.

4. The display panel according to claim 2, characterized in that: The touch signal line is located between the two fixed potential signal lines that transmit different signals; Preferably, the touch signal line is located between the adjacent high level power signal line and the adjacent low level power signal line; or, the touch signal line is located between the adjacent high level power signal line and the initialization power signal line.

5. The display panel according to claim 1, characterized in that: The array layer also includes data signal lines, which are arranged in the same layer as the fixed potential signal lines and the touch signal lines, and at least one fixed potential signal line is arranged between the data signal lines and the touch signal lines in a direction parallel to the plane where the substrate is located.

6. The display panel according to claim 1, characterized in that: Along an extending direction perpendicular to the touch signal line, the distance between the touch signal line and the adjacent fixed potential signal line is equal everywhere; Preferably, along an extending direction perpendicular to the touch signal line, a distance between the touch signal line and an adjacent fixed potential signal line is greater than or equal to 2 μm and less than or equal to 5 μm.

7. The display panel according to claim 1, characterized in that: The array layer comprises at least two conductive layers and an insulating layer disposed between two adjacent conductive layers; The fixed potential signal line is arranged on the same layer as any one of the at least two conductive layers.

8. The display panel according to claim 2, characterized in that: The display panel includes adjacent display areas and non-display areas, and the display area includes adjacent first display areas and second display areas; The light-emitting functional layer includes light-emitting units, and an arrangement density of the light-emitting units in the first display area is greater than an arrangement density of the light-emitting units in the second display area; The touch signal line is at least arranged in the second display area; Preferably, the low-level power signal line and the initialization power signal line are at least provided in the second display area.

9. The display panel according to claim 8, characterized in that: It also includes a touch electrode layer, which is arranged on the side of the light-emitting functional layer away from the substrate. The touch electrode layer includes a touch electrode block, and the touch signal line is electrically connected to the touch electrode block.

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

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