Display panel, preparation method thereof and display device

Abstract

The application discloses a display panel, a preparation method thereof and a display device. The array substrate of the display panel comprises a plurality of heating wires and a plurality of first display signal lines which are arranged in different layers and cross each other. The heating wire comprises a first section and a second section arranged along a first direction. The vertical projection of the second section on a substrate is overlapped with the vertical projection of the first display signal line on the substrate. The area of the second section per unit length is smaller than the area of the first section per unit length along the first direction. The display panel, the preparation method thereof and the display device provided by the application reduce the area of the overlapped part of the heating wire and the first display signal line, reduce the parasitic capacitance formed between the heating wire and the first display signal line and the coupling power consumption, and improve the display effect and display performance of the display panel at low temperature under lower power consumption.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display panel, its manufacturing method, and a display device. Background Technology

[0002] Liquid crystal display devices are widely used due to their advantages such as low power consumption, miniaturization, and thinness.

[0003] However, due to the inherent characteristics of liquid crystal molecules, the applicable scenarios for liquid crystal display devices have certain requirements regarding ambient temperature. For example, because vehicles are often in special working environments, automotive liquid crystal display devices need to adapt to a wide range of ambient temperatures, sometimes even requiring them to function normally within a temperature range of -20℃ to 55℃. When the liquid crystal display device is in a low-temperature environment, its response speed will slow down, severely affecting its normal display performance. Summary of the Invention

[0004] This invention provides a display panel, a method for manufacturing the same, and a display device, to improve the display effect and performance of the display panel at low temperatures with lower power consumption.

[0005] According to one aspect of the present invention, a display panel is provided, comprising an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer located between the array substrate and the counter substrate;

[0006] The array substrate includes a substrate and multiple heating traces and multiple first display signal lines located on the side of the substrate near the liquid crystal layer, wherein the heating traces and the first display signal lines are disposed in different layers;

[0007] The plurality of the first display signal lines are arranged along a first direction, and the first display signal lines extend along a second direction;

[0008] The plurality of heating traces are arranged along the second direction, and the heating traces extend along the first direction;

[0009] Wherein, the first direction and the second direction intersect;

[0010] The heating trace includes a first segment and a second segment arranged along the first direction, wherein the vertical projection of the second segment on the substrate overlaps with the vertical projection of the first display signal line on the substrate.

[0011] Along the first direction, the area of ​​the second segment per unit length is smaller than the area of ​​the first segment per unit length.

[0012] According to another aspect of the present invention, a method for manufacturing a display panel is provided, comprising:

[0013] An array substrate is fabricated, comprising a substrate and a plurality of heating traces and a plurality of first display signal lines located on one side of the substrate, wherein the heating traces and the first display signal lines are disposed in different layers; the plurality of first display signal lines are arranged along a first direction and extend along a second direction; the plurality of heating traces are arranged along the second direction and extend along the first direction; wherein the first direction and the second direction intersect; each heating trace includes a first segment and a second segment arranged along the first direction, wherein the vertical projection of the second segment on the substrate overlaps with the vertical projection of the first display signal line on the substrate; along the first direction, the area of ​​the second segment per unit length is smaller than the area of ​​the first segment per unit length;

[0014] The opposing substrate is connected to the array substrate in a cell, and a liquid crystal layer is formed between the opposing substrate and the array substrate.

[0015] According to another aspect of the present invention, a display device is provided, comprising the display panel described in the first aspect.

[0016] The technical solution provided by this invention involves setting multiple heating traces intersecting with the first display signal line on an array substrate to heat the liquid crystal layer in a low-temperature environment, thereby improving the response speed of the liquid crystal molecules and ensuring the display effect and performance of the display panel at low temperatures. Simultaneously, the heating traces include a first segment and a second segment arranged along a first direction, with the vertical projection of the second segment onto the substrate overlapping the vertical projection of the first display signal line onto the substrate. Along the first direction, by setting the area of ​​the second segment per unit length to be smaller than the area of ​​the first segment per unit length, the area of ​​the overlapping portion of the heating trace and the first display signal line within the same length in the first direction is smaller than the area of ​​the non-overlapping portion. This reduces the area per unit length of the second segment in the first direction, thereby reducing the overlap area between the heating trace and the first display signal line in the thickness direction of the display panel. This reduces the parasitic capacitance formed between the heating trace and the first display signal line, decreases unnecessary coupling power consumption, and improves the display effect and performance of the display panel at low temperatures with lower power consumption.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A magnified structural diagram at point A;

[0021] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the B-B' direction;

[0022] Figure 4 This is a partial structural diagram of a display panel provided in an embodiment of the present invention;

[0023] Figure 5 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0024] Figure 6 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0025] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure along the C-C' direction;

[0026] Figure 8 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0027] Figure 9 for Figure 8 A magnified structural diagram at point E;

[0028] Figure 10 This is a partial structural diagram of a display panel provided in an embodiment of the present invention;

[0029] Figure 11 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0030] Figure 12 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0031] Figure 13 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0032] Figure 14This is a schematic diagram of a bent line provided in an embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram of another bent line structure provided in an embodiment of the present invention;

[0034] Figure 16 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0035] Figure 17 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0036] Figure 18 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0037] Figure 19 for Figure 18 Schematic diagram of the cross-sectional structure along the F-F' direction;

[0038] Figure 20 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0039] Figure 21 A partial structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0040] Figure 22 for Figure 21 Schematic diagram of the cross-sectional structure along the G-G' direction;

[0041] Figure 23 This is a schematic diagram illustrating a method for manufacturing a display panel according to an embodiment of the present invention;

[0042] Figure 24 A schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present invention;

[0043] Figure 25 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention 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 the invention 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, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. Figure 2 for Figure 1 Enlarged structural diagram at point A Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the B-B' direction, as shown below. Figures 1-3 As shown, the display panel provided in this embodiment of the invention includes an array substrate 10 and a counter substrate 11 disposed opposite to each other, and a liquid crystal layer 12 located between the array substrate 10 and the counter substrate 11. The array substrate 10 includes a substrate 101 and multiple heating traces 102 and multiple first display signal lines 103 located on the side of the substrate 101 near the liquid crystal layer 12. The heating traces 102 and the first display signal lines 103 are disposed in different layers. The multiple first display signal lines 103 are arranged along a first direction X and extend along a second direction Y. The multiple heating traces 102 are arranged along the second direction Y and extend along the first direction X. The first direction X and the second direction Y intersect. The heating traces 102 include a first segment 21 and a second segment 22 arranged along the first direction X. The vertical projection of the second segment 22 on the substrate 101 overlaps with the vertical projection of the first display signal lines 103 on the substrate 101. Along the first direction X, the area of ​​the second segment 22 per unit length is smaller than the area of ​​the first segment 21 per unit length.

[0047] Specifically, such as Figures 1-3As shown, an array of pixel driving circuits 30 can be disposed on the array substrate 10. The pixel driving circuit 30 is connected to a pixel electrode. By applying a driving voltage to the pixel electrode through the pixel driving circuit 30, an electric field can be formed between the pixel electrode and the common electrode. This electric field can deflect the liquid crystal molecules in the liquid crystal layer 12. After the liquid crystal molecules are deflected, the light generated by the backlight component will pass through the display panel. By adjusting the magnitude of the electric field through the pixel driving circuit 30, the degree of deflection of the liquid crystal molecules can be different. When the degree of deflection of the liquid crystal molecules is different, the light transmittance of the display panel is different, and the amount of light transmitted through the display panel by the backlight component is different, thereby realizing the display of the image.

[0048] Furthermore, the opposing substrate 11 can be a color filter substrate, on which a black matrix and a photoresist layer can be provided to realize the color image display of the display panel.

[0049] Continue to refer to Figures 1-3 The array substrate 10 has a plurality of first display signal lines 103 arranged along the first direction X and extending along the second direction Y on the substrate 101. The first display signal lines 103 are electrically connected to the pixel driving circuit 30 and are used to transmit the display required signals to the pixel driving circuit 30.

[0050] The substrate 101 is further provided with multiple heating traces 102 arranged along the second direction Y and extending along the first direction X, wherein the first direction X and the second direction Y intersect, that is, the heating traces 102 are intersected with the first display signal lines 103. The heating traces 102 are used to heat the liquid crystal layer 12 in a low-temperature environment to improve the response speed of the liquid crystal molecules in the liquid crystal layer 12, ensuring that the liquid crystal molecules in the display panel can still respond quickly in a low-temperature environment, thereby improving the display effect and display performance of the display panel at low temperatures.

[0051] The heating trace 102 and the first display signal line 103 are located in different film layers to ensure insulation between them and reduce the impact of the heating trace 102 on the first display signal line 103.

[0052] It should be noted that the heating trace 102 is disposed on the array substrate 10, which allows the heating trace 102 to be heated inside the liquid crystal cell. With this arrangement, the heat generated on the heating trace 102 can be directly applied to the liquid crystal molecules in the liquid crystal layer 12, thereby achieving the purpose of enabling the display panel to start up quickly in a low-temperature environment.

[0053] Continue to refer to Figures 1-3Through research, the inventors discovered that, due to the insulated cross-layout between multiple heating traces 102 and multiple first display signal lines 103, there are a large number of overlapping portions between the heating traces 102 and the first display signal lines 103 along the thickness direction of the display panel. At the same time, the heating traces 102 and the first display signal lines 103 are both located on the array substrate 10 and are relatively close in vertical distance, which results in a large number of parasitic capacitances being formed at the overlapping points of the heating traces 102 and the first display signal lines 103.

[0054] According to the formula P=(1 / 2)*f*C*V 2 It can be seen that the larger the parasitic capacitance C, the larger the coupling power P generated, which causes unnecessary coupling power consumption, resulting in increased power consumption and waste (f in the formula represents the coupling frequency, and V represents the voltage difference of the signal transmitted on the first display signal line 103).

[0055] Based on the aforementioned technical issues, in this embodiment, the heating trace 102 is divided into a first segment 21 and a second segment 22 arranged along the first direction X. The vertical projection of the first segment 21 onto the substrate 101 does not overlap with the vertical projection of the first display signal line 103 onto the substrate 101, while the vertical projection of the second segment 22 onto the substrate 101 overlaps with the vertical projection of the first display signal line 103 onto the substrate 101. That is, along the thickness direction of the display panel, the portion of the heating trace 102 that does not overlap with the first display signal line 103 is the first segment 21, and the portion of the heating trace 102 that overlaps with the first display signal line 103 is the second segment 22.

[0056] Furthermore, along the first direction X, the area of ​​the second segment 22 per unit length is smaller than the area of ​​the first segment 21 per unit length. In other words, the area of ​​the second segment 22 per unit length in the first direction X is smaller than the area of ​​the first segment 21 per unit length. With this configuration, within the same length in the first direction X, the area of ​​the overlapping portion of the heating trace 102 and the first display signal line 103 is smaller than the area of ​​the non-overlapping portion of the heating trace 102 and the first display signal line 103. This reduces the area of ​​the second segment 22 per unit length in the first direction X, thereby reducing the overlapping area of ​​the heating trace 102 and the first display signal line 103 in the thickness direction of the display panel. The smaller the overlapping area, the smaller the parasitic capacitance formed, thus reducing the parasitic capacitance formed between the heating trace 102 and the first display signal line 103, reducing unnecessary coupling power consumption, and improving the display effect and display performance of the display panel at low temperatures with lower power consumption.

[0057] It should be noted that, Figures 1-3Taking the first direction X being perpendicular to the second direction Y as an example, in practical applications, the angle between the first direction X and the second direction Y can be set according to actual needs, as long as the first direction X and the second direction Y intersect. This embodiment of the invention does not impose specific limitations on this.

[0058] In summary, the display panel provided by the embodiments of the present invention has multiple heating traces arranged on the array substrate, intersecting with the first display signal line, to heat the liquid crystal layer in a low-temperature environment, thereby improving the response speed of the liquid crystal molecules in the liquid crystal layer and ensuring the display effect and performance of the display panel at low temperatures. Simultaneously, the heating traces include a first segment and a second segment arranged along a first direction, and the vertical projection of the second segment on the substrate overlaps with the vertical projection of the first display signal line on the substrate. Along the first direction, by setting the area of ​​the second segment per unit length to be smaller than the area of ​​the first segment per unit length, the area of ​​the overlapping portion of the heating trace and the first display signal line within the same length in the first direction is smaller than the area of ​​the non-overlapping portion, thus reducing the area per unit length of the second segment in the first direction. This reduces the overlap area of ​​the heating trace and the first display signal line in the thickness direction of the display panel, thereby reducing the parasitic capacitance formed between the heating trace and the first display signal line, reducing unnecessary coupling power consumption, and improving the display effect and performance of the display panel at low temperatures with lower power consumption.

[0059] Continue to refer to Figures 1-3 Optionally, the first segment 21 and the second segment 22 are arranged at intervals along the first direction X.

[0060] Specifically, such as Figures 1-3As shown, the heating trace 102 extends along the first direction X, and multiple first display signal lines 103 are arranged along the first direction X and extend along the second direction Y. At this time, along the thickness direction of the display panel, the heating trace 102 will form an overlapping area with multiple first display signal lines 103. In this embodiment, the heating trace portion located between adjacent first display signal lines 103 is the first segment 21, and the portion overlapping with multiple first display signal lines 103 in the thickness direction of the display panel is the second segment 22. Therefore, there are multiple first segments 21 and second segments 22 on the same heating trace 102, and the first segments 21 and second segments 22 are arranged alternately along the first direction X. Thus, in all overlapping portions of the heating trace 102 and the first display signal lines 103, the area per unit length along the first direction X is smaller than the area per unit length along the first direction X of the non-overlapping portions of the heating trace 102 and the first display signal lines 103, so as to further reduce the overlapping area of ​​the heating trace 102 and the first display signal lines 103, thereby reducing the parasitic capacitance formed between the heating trace 102 and the first display signal lines 103, reducing unnecessary coupling power consumption, and improving the display effect and display performance of the display panel at low temperatures with lower power consumption.

[0061] Continue to refer to Figures 1-3 Optionally, the second segment 22 includes a first connecting part 221 connected to the first segment 21. The length of the first connecting part 221 along the second direction Y is d1, and the length of the first segment 21 along the second direction Y is D, where d1 < D.

[0062] Specifically, such as Figure 2 As shown, along the first direction X, the first connecting part 221 of the second segment 22 connects the adjacent first segments 21 on both sides to ensure the normal operation of the heating trace 102.

[0063] like Figure 2 As shown, the length d1 of the first connecting portion 221 along the second direction Y is less than the length D of the first segment 21 along the second direction Y, thereby reducing the length of the second segment 22 in the second direction Y. This results in a gap being formed on the heating trace 102 that overlaps with the first display signal line 103 in the thickness direction of the display panel. With this configuration, along the first direction X, the area of ​​the second segment 22 per unit length is smaller than the area of ​​the first segment 21 per unit length, thereby reducing the overlap area between the heating trace 102 and the first display signal line 103, reducing the parasitic capacitance formed between the heating trace 102 and the first display signal line 103, and reducing the coupling power consumption between the heating trace 102 and the first display signal line 103.

[0064] Continue to refer to Figure 2 Along the second direction Y, the first connecting part 221 may be provided on one side of the heating trace 102, thereby forming a notch on the other side of the heating trace 102, but is not limited to this.

[0065] Figure 4 This is a partial structural diagram of a display panel provided in an embodiment of the present invention, as shown below. Figure 4 As shown, along the second direction Y, the first connecting part 221 can also be provided in the middle of the heating trace 102, thereby forming a notch on both sides of the heating trace 102.

[0066] The embodiments of the present invention do not specifically limit the shape and position of the first connecting part 221, as long as the electrical connection between the first part 21 on both sides of the second part 22 can be guaranteed.

[0067] In this embodiment, the first segment 21 adjacent to it is connected by only one first connecting part 221. Under the condition that the heating line 102 works normally, the overlapping area of ​​the heating line 102 and the first display signal line 103 can be reduced to a large extent, the parasitic capacitance formed between the heating line 102 and the first display signal line 103 can be reduced, thereby reducing the coupling power consumption between the heating line 102 and the first display signal line 103.

[0068] It should be noted that the specific value of the length d1 of the first connecting part 221 along the second direction Y can be set according to actual needs. It can be understood that the smaller the length d1 of the first connecting part 221 along the second direction Y, the smaller the area of ​​the second segment 22 per unit length along the first direction X, the smaller the overlapping area of ​​the heating trace 102 and the first display signal line 103, the smaller the parasitic capacitance formed between the heating trace 102 and the first display signal line 103, and the smaller the coupling power consumption between the heating trace 102 and the first display signal line 103.

[0069] In some embodiments, the length d1 of the first connecting portion 221 along the second direction Y can be set to be greater than or equal to 3 micrometers. This can reduce the difficulty of the process and avoid the problem of the heating trace 102 breaking.

[0070] Continue to refer to Figures 1-3 Optionally, along the second direction Y, the first connection portion 221 of the multiple second segments 22 on the same heating trace 102 is located on the same side of the heating trace 102.

[0071] Among them, such as Figure 2 As shown, the heating trace 102 and multiple first display signal lines 103 form an overlapping area. The portion of the heating trace located between adjacent first display signal lines 103 is the first segment 21, and the portion overlapping with multiple first display signal lines 103 is the second segment 22. Thus, there are multiple first segments 21 and second segments 22 on the same heating trace 102, and the first segments 21 and second segments 22 are arranged alternately along the first direction X.

[0072] In this embodiment, along the second direction Y, the first connecting portion 221 of the multiple second segments 22 on the same heating line 102 is located on the same side of the heating line 102. That is, the opening direction of the gaps formed by the multiple second segments 22 on the same heating line 102 is the same, which can make the influence of each gap on the sub-pixel light emission effect more consistent, thereby helping to improve the display uniformity.

[0073] Figure 5 This is a partial structural diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 5 As shown, optionally, along the second direction Y, the first connection portion 221 of adjacent second segments 22 on the same heating trace 102 is located on different sides of the heating trace 102.

[0074] Among them, such as Figure 1 As shown, the heating trace 102 and multiple first display signal lines 103 form an overlapping area. The portion of the heating trace located between adjacent first display signal lines 103 is the first segment 21, and the portion overlapping with multiple first display signal lines 103 is the second segment 22. Thus, there are multiple first segments 21 and second segments 22 on the same heating trace 102, and the first segments 21 and second segments 22 are arranged alternately along the first direction X.

[0075] In this embodiment, along the second direction Y, the first connecting portions 221 of adjacent second segments 22 on the same heating line 102 are located on different sides of the heating line 102. That is, the opening directions of the gaps formed by adjacent second segments 22 of the same heating line 102 are opposite, so that the first connecting portions 221 on the same heating line 102 will not be concentrated on the same side of the heating line 102. This makes the distribution of the first connecting portions 221 on the same heating line 102 more dispersed, which helps to reduce the impact of the heating line 102 on the visual effect of the human eye.

[0076] Figure 6 This is a partial structural diagram of another display panel provided in an embodiment of the present invention. Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure along the C-C' direction, as shown below. Figure 6 and Figure 7 As shown, optionally, the second segment 22 also includes a second connecting portion 222 connected to the first segment 21, the length of the second connecting portion 222 along the second direction Y is d2, where d1+d2<D.

[0077] Specifically, such as Figure 6 and Figure 7As shown, along the first direction X, the second segment 22 is also provided with a second connecting part 222 to connect the adjacent first segments 21 on both sides, so as to improve the reliability of the second segment 22 while ensuring the normal operation of the heating wire 102 and avoid the heating wire 102 from breaking in the second segment 22.

[0078] The second connecting portion 222 can be arranged with the first connecting portion 221 along the second direction Y. The sum of the length d1 of the first connecting portion 221 along the second direction Y and the length d2 of the second connecting portion 222 along the second direction Y is less than the length D of the first segment 21 along the second direction Y. This ensures that the area of ​​the second segment 22 per unit length is less than the area of ​​the first segment 21 per unit length in the first direction X, thereby reducing the overlap area between the heating trace 102 and the first display signal line 103, reducing the parasitic capacitance formed between the heating trace 102 and the first display signal line 103, and reducing the coupling power consumption between the heating trace 102 and the first display signal line 103.

[0079] It should be noted that the embodiments of the present invention do not specifically limit the shape and position of the first connecting part 221 and the second connecting part 222. The specific value of the length of the first connecting part 221 and the second connecting part 222 along the second direction Y can also be set according to actual needs. It can be understood that the smaller the sum of the lengths of the first connecting part 221 and the second connecting part 222 along the second direction Y, the smaller the area of ​​the second segment 22 per unit length along the first direction X, the smaller the overlap area of ​​the heating trace 102 and the first display signal line 103, the smaller the parasitic capacitance formed between the heating trace 102 and the first display signal line 103, and the smaller the coupling power consumption between the heating trace 102 and the first display signal line 103.

[0080] In some embodiments, the length of the first connecting portion 221 and / or the second connecting portion 222 along the second direction Y can be greater than or equal to 3 micrometers. This can reduce the difficulty of the process and avoid the problem of the heating trace 102 breaking.

[0081] Continue to refer to Figure 6 and Figure 7 Optionally, the first connecting portion 221 and the second connecting portion 222 are arranged along the second direction Y, and a first cutout portion 223 is provided between the first connecting portion 221 and the second connecting portion 222. The vertical projection of the first cutout portion 223 on the substrate 101 overlaps with the vertical projection of the first display signal line 103 on the substrate 101.

[0082] Specifically, such as Figure 6 and Figure 7As shown, the first connecting portion 221 and the second connecting portion 222 are arranged along the second direction Y, and there is a gap between the second connecting portion 222 and the first connecting portion 221 along the second direction Y, thereby forming a first cutout portion 223 that overlaps with the first display signal line 103 in the thickness direction of the display panel between the first connecting portion 221 and the second connecting portion 222. With this configuration, the area of ​​the second segment 22 per unit length is smaller than the area of ​​the first segment 21 per unit length in the first direction X, thereby reducing the overlap area between the heating trace 102 and the first display signal line 103, reducing the parasitic capacitance formed between the heating trace 102 and the first display signal line 103, and reducing the coupling power consumption between the heating trace 102 and the first display signal line 103.

[0083] Continue to refer to Figures 1-7 Optionally, the display panel provided in this embodiment of the invention further includes multiple data lines 13 and multiple scan lines 14, the extension directions of the data lines 13 and scan lines 14 intersect, and the multiple data lines 13 and multiple scan lines 14 intersect to define multiple sub-pixels 15. The data lines 13 serve as first display signal lines 103, the heating traces 102 are located between adjacent scan lines 14, and the extension direction of the heating traces 102 is parallel to the extension direction of the scan lines 14; or, the scan lines 14 serve as first display signal lines 103, the heating traces 102 are located between adjacent data lines 13, and the extension direction of the heating traces 102 is parallel to the extension direction of the data lines 13.

[0084] Multiple data lines 13 and multiple scan lines 14 can be disposed on the array substrate 10. The multiple data lines 13 and multiple scan lines 14 intersect to define multiple sub-pixels 15. Typically, the multiple sub-pixels 15 are arranged in a rectangular array.

[0085] Optionally, each of the multiple scan lines 14 is electrically connected to a corresponding row of sub-pixels 15, for sequentially applying scan signals to the sub-pixel row. Each of the multiple data lines 13 is electrically connected to a corresponding column of sub-pixels 15, for applying data signals to the sub-pixels.

[0086] For example, such as Figures 1-7 As shown, sub-pixel 15 may include pixel driving circuit 30, which includes thin film transistor 301. Thin film transistor 301 may include gate layer 31, active layer 32 and source / drain electrode layer 33. Scan line 14 is connected to gate layer 31 of thin film transistor 301, and data line 13 is connected to source / drain electrode layer 33 of thin film transistor 301.

[0087] When displaying on the display panel, a scan signal can be input to the scan line 14 to control the activation of the thin-film transistor 301, and a data signal can be input to the data line 13. The data signal is transmitted through the activated thin-film transistor 301 to the pixel electrode connected to the source / drain electrode layer 33 of the thin-film transistor 301, so that an electric field is formed between the pixel electrode and the common electrode. This electric field causes the liquid crystal molecules in the liquid crystal layer 12 to deflect. After the liquid crystal molecules are deflected, the light generated by the backlight component will pass through the display panel. Different data signals result in different electric field magnitudes, which causes different degrees of deflection of the liquid crystal molecules. When the degree of deflection of the liquid crystal molecules is different, the light transmittance of the display panel is different, and the amount of light transmitted through the display panel by the backlight component is different, thereby realizing the display of the image.

[0088] Optional, such as Figures 1-7 As shown, the first display signal line 103 can be a data line 13. In this case, the data line 13 is arranged along the first direction X and extends along the second direction Y; the scan line 14 can be arranged along the second direction Y and extends along the first direction X. In this embodiment, the light-emitting area of ​​sub-pixel 15 is not obstructed by data lines 13 and scan lines 14. The light generated by the backlight assembly passes through the light-emitting area of ​​sub-pixel 15 to achieve the light emission of sub-pixel 15. It is understood that the light emission brightness of sub-pixel 15 is related to the light transmittance of the light-emitting area, and the light transmittance of the light-emitting area is related to the degree of deflection of the liquid crystal molecules located in the light-emitting area. In this embodiment, the heating trace 102 is set in the light-emitting area of ​​sub-pixel 15 between adjacent scan lines 14, and the extension direction of the heating trace 102 is parallel to the extension direction of the scan line 14. On the one hand, it can avoid the overlapping of the heating trace 102 and the scan line 14 to form parasitic capacitance, causing unnecessary coupling power consumption, resulting in increased power consumption and waste. On the other hand, the heat generated on the heating trace 102 can be directly applied to the liquid crystal molecules in the liquid crystal layer 12 of the light-emitting area of ​​sub-pixel 15, so that the liquid crystal molecules in the light-emitting area of ​​sub-pixel 15 can respond quickly in low-temperature environment, improving the display effect of the display panel in low-temperature environment.

[0089] Figure 8 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. Figure 9 for Figure 8 An enlarged structural diagram at point E, as shown below. Figure 8 and Figure 9As shown, optionally, the first display signal line 103 can also be a scan line 14. In this case, the scan line 14 is arranged along the first direction X and extends along the second direction Y; the data line 13 can be arranged along the second direction Y and extends along the first direction X. The heating trace 102 is positioned in the light-emitting area of ​​the sub-pixel 15 between adjacent data lines 13, and the extension direction of the heating trace 102 is parallel to the extension direction of the data line 13. On the one hand, this avoids the heating trace 102 overlapping with the data line 13 to form parasitic capacitance, causing unnecessary coupling power consumption, leading to increased power consumption and waste. On the other hand, the heat generated on the heating trace 102 can directly act on the liquid crystal molecules in the liquid crystal layer 12 of the light-emitting area of ​​the sub-pixel 15, enabling the liquid crystal molecules in the light-emitting area of ​​the sub-pixel 15 to respond quickly in low-temperature environments, improving the display effect of the display panel in low-temperature environments.

[0090] Continue to refer to Figures 1-9 Optionally, the first segment 21 includes a straight line, the line width of which is equal to the length of the first segment 21 along the second direction Y.

[0091] Among them, such as Figure 2 and Figure 6 As shown, the first segment 21 may include a straight line, the line width d of which is the length D of the first segment 21 along the second direction Y. With this setting, the structure of the heating line 102 is simple, the line width of the first segment 21 can be easily calculated according to the heat required to be heated, and the first segment 21 can have a large area in a small space, thereby helping to provide greater heating power, generate more heat, and improve the heating effect.

[0092] Figure 10 This is a partial structural diagram of a display panel provided in an embodiment of the present invention. Figure 11 This is a partial structural diagram of another display panel provided in an embodiment of the present invention. Figure 12 This is a partial structural diagram of another display panel provided in an embodiment of the present invention. Figure 13 This is a partial structural diagram of another display panel provided in an embodiment of the present invention, as shown below. Figures 10-13 As shown, optionally, the first segment 21 includes a bend line, the line width d4 of which is less than the length D of the first segment 21 along the second direction Y.

[0093] In this embodiment, as Figures 10-13 As shown, the first segment 21 can also be set as a bent line, and the line width d4 of the bent line is smaller than the length D of the first segment 21 along the second direction Y. Compared with the first segment 21 being set as a straight line, the first segment 21 using a bent line with a smaller line width has a smaller trace area in the same space, which can reduce the occlusion area of ​​the first segment 21 on the light-emitting area of ​​the sub-pixel 15 and help improve the display brightness.

[0094] The width of the bent wire can be set according to the required heating power. It can be understood that the larger the width of the bent wire, the smaller the resistance per unit length of the bent wire, thus providing greater heating power; the smaller the width of the bent wire, the larger the resistance per unit length of the bent wire, thus providing less heating power.

[0095] Furthermore, the number of bends in each of the first segments 21 can also be set according to actual heating requirements, for example, such as Figure 10 and Figure 12 As shown, under the condition of a fixed line width, setting fewer bends in each first segment 21 allows for a smaller trace area within the same space, thus providing less heating power. Simultaneously, the first segment 21 also minimizes the obstruction of the light-emitting area of ​​the sub-pixel 15, contributing to improved display brightness. And... Figure 11 and Figure 13 In each of the first segments 21, there are a large number of bends in the lines. Under the condition of a certain line width, there can be a larger wiring area in the same space, thereby providing greater heating power, generating more heat, and improving the heating effect.

[0096] Figure 14 This is a schematic diagram of a bent line provided in an embodiment of the present invention. Figure 15 This is a schematic diagram of another bent line structure provided in an embodiment of the present invention, as shown below. Figures 10-15 As shown, the bend can optionally be any one of square wave, sawtooth, or serpentine.

[0097] For example, such as Figures 10-13 As shown, the bend line can be specifically traced using a square wave pattern; for example... Figure 14 As shown, a zigzag pattern can also be used for bent lines; such as... Figure 15 As shown, the bend line can also adopt a serpentine routing to reduce the occlusion area of ​​the first segment 21 pairs of sub-pixels 15 light-emitting areas and improve display brightness, but it is not limited to this. Other shapes of bend lines can also be used according to actual needs.

[0098] Continue to refer to Figures 10-13 Optionally, the bend line includes a plurality of first bend lines 41 extending along a first direction X and a plurality of second bend lines 42 extending along a second direction Y, wherein the first bend lines 41 and the second bend lines 42 are alternately connected, and the plurality of second bend lines 42 are arranged along the first direction X.

[0099] Among them, such as Figures 10-13As shown, in the first segment 21, the first broken line 41 extending along the first direction X and the second broken line 42 extending along the second direction Y are alternately connected to form a square waveform trace. Moreover, multiple second broken lines 42 are arranged along the first direction X, which can make the entire heating trace 102 form a regular square waveform trace. This reduces the occlusion area of ​​the first segment 21 on the light-emitting area of ​​the sub-pixel 15 and improves the display brightness. At the same time, it is beneficial to design the line width and other parameters of the heating trace 102 according to the required heating heat.

[0100] Figure 16 This is a partial structural diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 16 As shown, optionally, the shortest distance between the second broken lines 42 in adjacent first segments 21 is H1, and the shortest distance between adjacent second broken lines 42 in the same first segment 21 is H2, where H1 > H2.

[0101] Specifically, such as Figure 16 As shown, by setting the shortest distance H1 between the second broken lines 42 in adjacent first segments 21 to be greater than the shortest distance H2 between adjacent second broken lines 42 in the same first segment 21, the second broken line 42 adjacent to the first display signal line 103 has a larger distance from the first display signal line 103, thereby reducing the coupling capacitance between the second broken line 42 and the first display signal line 103, reducing coupling power consumption, and reducing the increase and waste of power consumption.

[0102] The specific values ​​of the shortest distance H1 between the second broken line 42 in the adjacent first segment 21 and the shortest distance H2 between the second broken line 42 in the same first segment 21 can be set according to actual needs. Usually, in the direction parallel to the plane where the display panel is located, the distance between the second broken line 42 adjacent to the first display signal line 103 and the first display signal line 103 is greater than 0, so as to reduce the coupling capacitance between the second broken line 42 and the first display signal line 103 and reduce coupling power consumption.

[0103] Figure 17 This is a partial structural diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 17 As shown, optionally, the bend line includes multiple first bend lines 41 extending along a first direction X and multiple second bend lines 42 extending along a second direction Y. The first bend lines 41 and the second bend lines 42 are alternately connected, and the multiple first bend lines 41 are arranged along the second direction Y.

[0104] Among them, such as Figure 17As shown, in the first segment 21, the first fold line 41 extending along the first direction X and the second fold line 42 extending along the second direction Y are alternately connected to form a square waveform trace. Multiple first fold lines 41 are arranged along the second direction Y. While reducing the occlusion area of ​​the light-emitting area of ​​the sub-pixel 15 by the first segment 21 and improving the display brightness, it also helps to reduce the length of the second fold line 42 adjacent to the first display signal line 103, thereby reducing the coupling capacitance between the second fold line 42 and the first display signal line 103, reducing coupling power consumption, and reducing the increase and waste of power consumption.

[0105] Continue to refer to Figure 1-13 Optionally, along the thickness direction of the display panel, the heating trace 102 is located on the side of the first display signal line 103 close to the substrate 101.

[0106] Among them, such as Figure 3 As shown, by setting the heating trace 102 to be located on the side of the first display signal line 103 close to the substrate 101, the distance between the heating trace 102 and the liquid crystal layer 12 can be increased in the thickness direction of the display panel. This reduces the influence of the electric field formed by the voltage on the heating trace 102 on the liquid crystal molecules in the liquid crystal layer 12, thereby ensuring the accuracy of the deflection angle of the liquid crystal molecules and making the light emission brightness of the sub-pixel 15 more precise, which helps to improve the display effect of the display panel.

[0107] Furthermore, the heating trace 102 can be disposed on the same layer as the existing conductive film layer in the display panel, which reduces the number of conductive film layers required, thereby achieving the goal of reducing production costs and panel thickness. For example, as Figure 3 As shown, the heating trace 102 can be disposed on the same layer as the gate layer 31 of the thin film transistor 301; in other embodiments, the heating trace 102 can also be disposed on the same layer as the source and drain electrode layers 33 of the thin film transistor 301, but is not limited thereto.

[0108] Figure 18 This is a partial structural diagram of another display panel provided in an embodiment of the present invention. Figure 19 for Figure 18 A schematic diagram of the cross-sectional structure along the F-F' direction. Figure 20 This is a partial structural diagram of another display panel provided in an embodiment of the present invention, as shown below. Figures 18-20 As shown, optionally, along the thickness direction of the display panel, the heating trace 102 is located on the side of the first display signal line 103 away from the substrate 101.

[0109] Among them, such as Figures 18-20As shown, by setting the heating trace 102 to the side of the first display signal line 103 away from the substrate 101, the distance between the heating trace 102 and the liquid crystal layer 12 can be reduced in the thickness direction of the display panel, so that the heat generated on the heating trace 102 can be applied more directly to the liquid crystal molecules in the liquid crystal layer 12, thereby achieving the purpose of the display panel being able to start up quickly in a low-temperature environment.

[0110] In addition, the heating trace 102 can be set in the same layer as the existing conductive film layer in the display panel to reduce the number of conductive film layers, thereby reducing production costs and panel thickness. This will not be elaborated further here.

[0111] Figure 21 This is a partial structural diagram of another display panel provided in an embodiment of the present invention. Figure 22 for Figure 21 A schematic diagram of the cross-sectional structure along the G-G' direction, as shown below. Figure 21 and Figure 22 As shown, optionally, the array substrate 10 further includes a plurality of second display signal lines 104, which are arranged along a second direction Y and extend along a first direction X. Each second display signal line 104 includes a first sub-signal line 51 and a second sub-signal line 52 electrically connected to each other. The first sub-signal line 51 is located on the side of the second sub-signal line 52 closest to the substrate 101, and the vertical projection of the first sub-signal line 51 on the substrate 101 covers the vertical projection of the second sub-signal line 52 on the substrate 101. The first sub-signal line 51 is disposed on the same layer as the heating trace 102, and the material of the first sub-signal line 51 is the same as the material of the heating trace 102.

[0112] The second display signal line 104 extends in a direction parallel to the extension direction of the heating trace 102, meaning that the second display signal line 104 is a signal line that does not intersect with the heating trace 102.

[0113] For example, such as Figure 21 and Figure 22As shown, taking data line 13 as the first display signal line 103 and heating trace 102 located between adjacent scan lines 14 as an example, the second display signal line 104 can be the scan line 14. The second display signal line 104 is composed of a first sub-signal line 51 and a second sub-signal line 52 in adjacent film layers. The first sub-signal line 51 is located between and connected to the second sub-signal line 52, and along the thickness direction of the display panel, the first sub-signal line 51 covers the second sub-signal line 52. The vertical projection area of ​​the first sub-signal line 51 on the substrate 101 can be equal to the vertical projection area of ​​the second sub-signal line 52 on the substrate 101, that is, the vertical projection of the first sub-signal line 51 on the substrate 101 can coincide with the vertical projection of the second sub-signal line 52 on the substrate 101, or the vertical projection area of ​​the first sub-signal line 51 on the substrate 101 is greater than the vertical projection area of ​​the second sub-signal line 52 on the substrate 101. This is not limited here.

[0114] Furthermore, the first sub-signal line 51 and the heating trace 102 are disposed on the same layer, which reduces the number of conductive layers required, thereby reducing production costs and substrate thickness. Simultaneously, the first sub-signal line 51 is made of the same material as the heating trace 102, allowing them to be fabricated in the same process, thus shortening the process time.

[0115] In this embodiment, the second display signal line 104 and the heating trace 102 can be fabricated in the same process to save the cost of a mask, thereby reducing production costs.

[0116] Optionally, a halftone mask (HTM) can be used to fabricate the second display signal line 104 and the heating trace 102 in the same process, but it is not limited to this.

[0117] For example, Figure 23 This is a schematic diagram of a method for manufacturing a display panel according to an embodiment of the present invention, as shown below. Figure 23As shown, a first conductive layer 510 and a second conductive layer 520 are sequentially fabricated. The first conductive layer 510 and the second conductive layer 520 are exposed using a halftone mask 60. The halftone mask 60 includes a first exposure section 601, a second exposure section 602, and a third exposure section 603. The first exposure section 601 corresponds to the area where the second sub-signal line 52 is located; the second exposure section 602 corresponds to the area where the first sub-signal line 51 and the heated trace 102 are located; and the third exposure section 603 corresponds to the area excluding the first sub-signal line 51, the second sub-signal line 52, and the heated trace 102. Furthermore, the light transmittance of the first exposure section 601 is less than that of the second exposure section 602. The light transmittance of the second exposure section 602 is less than that of the third exposure section 603, so that the degree of etching of the first conductive layer 510 and the second conductive layer 520 corresponding to the first exposure section 601 is less than that of the first conductive layer 510 and the second conductive layer 520 corresponding to the second exposure section 602, and the degree of etching of the first conductive layer 510 and the second conductive layer 520 corresponding to the second exposure section 602 is less than that of the first conductive layer 510 and the second conductive layer 520 corresponding to the third exposure section 603. This allows the second display signal line 104 and the heating trace 102 to be formed in the same process, saving the cost of a mask and reducing production costs, but it is not limited to this.

[0118] It should be noted that when the scan line 14 is used as the first display signal line 103 and the heating trace 102 is located between adjacent data lines 13, the second display signal line 104 can also be a data line 13, but it is not limited to this, as long as the second display signal line 104 and the heating trace 102 do not cross.

[0119] Optionally, the heating trace 102 can be a transparent trace.

[0120] As mentioned above, the heating trace 102 overlaps with the light-emitting area of ​​the sub-pixel 15 in the thickness direction of the display panel. Therefore, in this embodiment, by setting the heating trace 102 as a transparent trace, light can pass through the heating trace 102 for display, thereby reducing the impact of the heating trace 102 on the display brightness of the display panel.

[0121] Optionally, the material of the heating trace 102 includes any one or more of indium tin oxide (ITO), indium zinc oxide (IZO), antimony tin oxide (ATO), aluminum zinc oxide (AZO), and zinc oxide (ZnO).

[0122] By using the aforementioned material for the heating trace 102, while ensuring good conductivity, the heating trace 102 also has high light transmittance, thereby reducing the impact of the heating trace 102 on the display brightness of the display panel.

[0123] It should be noted that the heating trace 102 is not limited to the materials mentioned above, and those skilled in the art can also select other transparent conductive materials according to actual needs.

[0124] Based on the same inventive concept, this embodiment of the invention also provides a method for preparing a display panel, which is used to prepare any of the display panels provided in the above embodiments. The explanations of the same or corresponding structures and terms as in the above embodiments will not be repeated here.

[0125] Figure 24 This is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the present invention, as shown below. Figure 24 As shown, the method includes:

[0126] Step 110: Prepare an array substrate, wherein the array substrate includes a substrate and multiple heating traces and multiple first display signal lines located on one side of the substrate, the heating traces and the first display signal lines being disposed in different layers; the multiple first display signal lines are arranged along a first direction and extend along a second direction; the multiple heating traces are arranged along the second direction and extend along the first direction; wherein the first direction and the second direction intersect; the heating traces include a first segment and a second segment arranged along the first direction, the vertical projection of the second segment on the substrate overlaps with the vertical projection of the first display signal line on the substrate; along the first direction, the area of ​​the second segment per unit length is smaller than the area of ​​the first segment per unit length.

[0127] Step 120: Connect the opposing substrate and the array substrate together, and form a liquid crystal layer between the opposing substrate and the array substrate.

[0128] The method for fabricating a display panel provided in this invention involves fabricating multiple heating traces intersecting with a first display signal line on an array substrate. This heats the liquid crystal layer at low temperatures, improving the response speed of the liquid crystal molecules and ensuring the display effect and performance of the display panel at low temperatures. Simultaneously, the heating traces include a first segment and a second segment arranged along a first direction. The vertical projection of the second segment onto the substrate overlaps with the vertical projection of the first display signal line onto the substrate. By setting the area of ​​the second segment per unit length to be smaller than the area of ​​the first segment per unit length along the first direction, the area of ​​the overlapping portion of the heating trace and the first display signal line within the same length in the first direction is smaller than the area of ​​the non-overlapping portion. This reduces the area per unit length of the second segment in the first direction, thereby reducing the overlap area between the heating trace and the first display signal line in the thickness direction of the display panel. This reduces the parasitic capacitance formed between the heating trace and the first display signal line, decreasing unnecessary coupling power consumption and improving the display effect and performance of the display panel at low temperatures with lower power consumption.

[0129] Optionally, the fabrication of the array substrate includes:

[0130] A first conductive layer and a second conductive layer are sequentially fabricated on one side of a substrate.

[0131] A halftone mask with different transmittance in different areas is used to pattern the first conductive layer and the second conductive layer to form multiple first sub-signal lines and multiple heating traces in the first conductive layer, and multiple second sub-signal lines in the second conductive layer. The multiple first sub-signal lines and multiple second sub-signal lines are electrically connected one-to-one to form multiple second display signal lines. The multiple second display signal lines are arranged along a second direction and extend along a first direction. The vertical projection of the first sub-signal lines on the substrate covers the vertical projection of the second sub-signal lines on the substrate.

[0132] For example, continue to refer to Figure 23 A first conductive layer 510 and a second conductive layer 520 are sequentially fabricated. A halftone mask 60 is used to expose and develop the first conductive layer 510 and the second conductive layer 520 to pattern them. The halftone mask 60 includes a first exposure section 601, a second exposure section 602, and a third exposure section 603. The first exposure section 601 corresponds to the area where the second sub-signal line 52 is located; the second exposure section 602 corresponds to the area where the first sub-signal line 51 and the heated trace 102 are located; and the third exposure section 603 corresponds to the area excluding the first sub-signal line 51, the second sub-signal line 52, and the heated trace 102. The light transmittance of the first exposure section 601 is less than that of the second exposure section 602. The light transmittance of the first exposure layer 601 is less than that of the third exposure layer 603, so that the etching degree of the first conductive layer 510 and the second conductive layer 520 corresponding to the first exposure layer 601 is less than that of the first conductive layer 510 and the second conductive layer 520 corresponding to the second exposure layer 602, and the etching degree of the first conductive layer 510 and the second conductive layer 520 corresponding to the second exposure layer 602 is less than that of the first conductive layer 510 and the second conductive layer 520 corresponding to the third exposure layer 603. As a result, multiple first sub-signal lines 51 and multiple heating traces 102 are formed in the first conductive layer 510, and multiple second sub-signal lines 52 are formed in the second conductive layer 520. This achieves the formation of the second display signal line 104 and the heating trace 102 in the same process, saving the cost of a mask and reducing production costs.

[0133] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 25 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 25As shown, the display device 70 includes the display panel 71 described in any embodiment of the present invention. Therefore, the display device 70 provided by the embodiments of the present invention has the technical effects of the technical solutions in any of the above embodiments. The explanations of the same or corresponding structures and terms as described in the above embodiments will not be repeated here.

[0134] The display device 70 provided in this embodiment of the invention can be Figure 25 The mobile phone shown can also be any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet, digital camera, smart bracelet, smart glasses, in-vehicle display, medical equipment, industrial control equipment, touch interactive terminal, etc. The embodiments of the present invention do not make any special limitations on this.

[0135] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and no limitation is imposed herein.

[0136] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A display panel, characterized by, It includes an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer located between the array substrate and the counter substrate; The array substrate includes a substrate and multiple heating traces and multiple first display signal lines located on the side of the substrate near the liquid crystal layer, wherein the heating traces and the first display signal lines are disposed in different layers; The plurality of the first display signal lines are arranged along a first direction, and the first display signal lines extend along a second direction; The plurality of heating traces are arranged along the second direction, and the heating traces extend along the first direction; Wherein, the first direction and the second direction intersect; The heating trace includes a first segment and a second segment arranged along the first direction, wherein the vertical projection of the second segment on the substrate overlaps with the vertical projection of the first display signal line on the substrate. Along the first direction, the area of ​​the second segment per unit length is smaller than the area of ​​the first segment per unit length; The array substrate further includes a plurality of second display signal lines, which are arranged along the second direction and extend along the first direction; The second display signal line includes a first sub-signal line and a second sub-signal line that are electrically connected to each other. The first sub-signal line is located on the side of the second sub-signal line that is close to the substrate, and the vertical projection of the first sub-signal line on the substrate covers the vertical projection of the second sub-signal line on the substrate.

2. The display panel according to claim 1, characterized in that, The first segment and the second segment are arranged at intervals along the first direction.

3. The display panel according to claim 1, characterized in that, The second segment includes a first connecting portion that is connected to the first segment; The length of the first connecting portion along the second direction is d1, and the length of the first segment along the second direction is D, where d1 < D.

4. The display panel according to claim 3, characterized in that, Along the second direction, the first connection portion of one of the multiple second segments on the same heating trace is located on the same side of the heating trace.

5. The display panel according to claim 3, characterized in that, Along the second direction, the first connection portion in adjacent second segments of the same heating trace is located on different sides of the heating trace.

6. The display panel according to claim 3, characterized in that, The second segment also includes a second connecting portion connected to the first segment; The length of the second connecting part along the second direction is d2, where d1+d2<D.

7. The display panel according to claim 6, characterized in that, The first connecting portion and the second connecting portion are arranged along the second direction, and a first hollow portion is provided between the first connecting portion and the second connecting portion; The vertical projection of the first cutout portion on the substrate overlaps with the vertical projection of the first display signal line on the substrate.

8. The display panel according to claim 1, characterized in that, The display panel also includes multiple data lines and multiple scan lines, the extension directions of the data lines and the scan lines intersect, and the multiple data lines and the multiple scan lines intersect to define multiple sub-pixels; The data line serves as the first display signal line, the heating trace is located between adjacent scan lines, and the extension direction of the heating trace is parallel to the extension direction of the scan line. or, The scan line serves as the first display signal line, the heating trace is located between adjacent data lines, and the extension direction of the heating trace is parallel to the extension direction of the data lines.

9. The display panel according to claim 1, characterized in that, The first segment includes a straight line, the width of which is equal to the length of the first segment along the second direction.

10. The display panel according to claim 1, characterized in that, The first segment includes a bend line, the width of which is less than the length of the first segment along the second direction.

11. The display panel according to claim 10, characterized in that, The bent line can be any one of square wave, sawtooth, or serpentine.

12. The display panel according to claim 10, characterized in that, The bent line includes a plurality of first bent lines extending along the first direction and a plurality of second bent lines extending along the second direction; The first and second broken lines are connected alternately; Multiple second broken lines are arranged along the first direction.

13. The display panel according to claim 12, characterized in that, The shortest distance between the second broken lines in adjacent segments of the first segment is H1, and the shortest distance between adjacent second broken lines in the same segment is H2, wherein H1 > H2.

14. The display panel according to claim 10, characterized in that, The bent line includes a plurality of first bent lines extending along the first direction and a plurality of second bent lines extending along the second direction; The first and second broken lines are connected alternately; Multiple of the first broken lines are arranged along the second direction.

15. The display panel according to claim 1, characterized in that, Along the thickness direction of the display panel, the heating trace is located on the side of the first display signal line away from the substrate.

16. The display panel according to claim 1, characterized in that, Along the thickness direction of the display panel, the heating trace is located on the side of the first display signal line closest to the substrate.

17. The display panel according to claim 1, characterized in that, The first sub-signal line is disposed on the same layer as the heating trace, and the material of the first sub-signal line is the same as the material of the heating trace.

18. The display panel according to claim 1, characterized in that, The heating traces are transparent.

19. The display panel according to claim 18, characterized in that, The materials of the heating wires include any one or more of indium tin oxide, indium zinc oxide, antimony tin oxide, aluminum zinc oxide, and zinc oxide.

20. A method for manufacturing a display panel, comprising: include: An array substrate is fabricated, comprising a substrate and a plurality of heating traces and a plurality of first display signal lines located on one side of the substrate, wherein the heating traces and the first display signal lines are disposed in different layers; the plurality of first display signal lines are arranged along a first direction and extend along a second direction; the plurality of heating traces are arranged along the second direction and extend along the first direction; wherein the first direction and the second direction intersect; each heating trace includes a first segment and a second segment arranged along the first direction, wherein the vertical projection of the second segment on the substrate overlaps with the vertical projection of the first display signal line on the substrate; along the first direction, the area of ​​the second segment per unit length is smaller than the area of ​​the first segment per unit length; The opposing substrate is connected to the array substrate in a cascade, and a liquid crystal layer is formed between the opposing substrate and the array substrate; Fabrication of the array substrate includes: A first conductive layer and a second conductive layer are sequentially formed on one side of the substrate. The first conductive layer and the second conductive layer are patterned using halftone masks with different transmittance in different areas to form multiple first sub-signal lines and multiple heating traces in the first conductive layer, and multiple second sub-signal lines in the second conductive layer. The multiple first sub-signal lines and multiple second sub-signal lines are electrically connected one-to-one to form multiple second display signal lines. The multiple second display signal lines are arranged along the second direction and extend along the first direction. The vertical projection of the first sub-signal lines on the substrate covers the vertical projection of the second sub-signal lines on the substrate.

21. A display device comprising: Includes the display panel as described in any one of claims 1-19.

Images