A display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device. The display panel comprises a display area and a non-display area, at least part of the non-display area is used to be attached to a backlight module; the display panel further comprises a plurality of heating wires, the heating wires are located in the display area and the non-display area; in the same area, the resistance of the heating wire located in the non-display area is greater than the resistance of the heating wire located in the display area. By using the technical solution in the present application, the heating wires can heat the display area and the non-display area of the display panel, so as to ensure the overall heating effect of the display panel; in addition, the heating effect on the non-display area of the display panel can be enhanced, the problem of fast heat dissipation of the non-display area is compensated, the temperature of the display area and the non-display area of the display panel is consistent, the normal application of the display panel is ensured, and the reliability of the display panel is improved.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] In some specialized display applications, the display device must be able to withstand a wide range of ambient temperatures. Taking liquid crystal displays (LCDs) as an example, at low temperatures, the viscosity of the liquid crystal material increases, the threshold voltage rises, the response speed slows down, and liquid crystal crystallization may even occur, causing the LCD to malfunction. Currently, to ensure normal operation at low temperatures, heating structures are typically incorporated into the display device. However, existing technologies still suffer from unsatisfactory heating effects. Summary of the Invention

[0003] In view of this, the present invention provides a display panel and a display device to enhance the heating effect on the edge area of ​​the display panel and ensure the temperature uniformity of each area of ​​the display panel.

[0004] In a first aspect, embodiments of the present invention provide a display panel, including a display area and a non-display area, wherein at least a portion of the non-display area is used for bonding with a backlight module;

[0005] The display panel also includes multiple heating traces located in the display area and the non-display area; wherein, within the same area, the resistance of the heating trace located in the non-display area is greater than the resistance of the heating trace located in the display area.

[0006] Secondly, embodiments of the present invention provide a display device, including the display panel described in the first aspect of the present invention and a backlight module, wherein the backlight module is located on the side of the display panel opposite to the light emitting side.

[0007] In this embodiment of the invention, the display panel includes a display area and a non-display area, with at least a portion of the non-display area used for bonding with a backlight module. The display panel also includes multiple heating traces located in both the display and non-display areas. Within the same area, the resistance of the heating traces located in the non-display area is greater than the resistance of the heating traces located in the display area. Using the technical solution of this application, the heating traces can heat both the display and non-display areas of the display panel to ensure the overall heating effect of the display panel. Furthermore, it can enhance the heating effect on the non-display area of ​​the display panel, compensating for the problem of rapid heat dissipation in the non-display area, resulting in a more uniform temperature between the display and non-display areas of the display panel, ensuring normal operation of the display panel, and improving the reliability of the display panel. Attached Figure Description

[0008] Figure 1This is a cross-sectional structural diagram of a display device in related technologies;

[0009] Figure 2 This is a top view of the display panel structure in related technologies;

[0010] Figure 3 for Figure 2 A magnified structural diagram at point A;

[0011] Figure 4 This is a cross-sectional structural diagram of a display device provided in an embodiment of the present invention;

[0012] Figure 5 This is a top view structural diagram of a display panel provided in an embodiment of the present invention;

[0013] Figure 6 for Figure 5 A magnified structural diagram at point B;

[0014] Figure 7 for Figure 5 Another enlarged structural diagram at point B;

[0015] Figure 8 and Figure 9 for Figure 5 A partially enlarged structural diagram of the two display panels at point C;

[0016] Figure 10 This is a partially enlarged structural diagram of a display panel provided in an embodiment of the present invention;

[0017] Figure 11 A partially enlarged structural diagram of another display panel provided in an embodiment of the present invention;

[0018] Figure 12 A partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0019] Figure 13 A partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0020] Figure 14 A partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0021] Figure 15 A partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0022] Figure 16 for Figure 5 A magnified structural diagram at point D;

[0023] Figure 17 and Figure 18 A partially enlarged structural schematic diagram of two more display panels provided in embodiments of the present invention;

[0024] Figure 19 A partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0025] Figure 20 A partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0026] Figure 21 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0027] Figure 22 This is a cross-sectional structural diagram of a display panel provided in an embodiment of the present invention;

[0028] Figure 23 A partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention;

[0029] Figure 24 This is a top view of a display device provided in an embodiment of the present invention. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0031] Figure 1 This is a cross-sectional structural diagram of a display device in related technologies. Figure 2 This is a top view diagram of the display panel structure in related technologies. Figure 3 for Figure 2 An enlarged structural diagram at point A, as shown below. Figures 1-3 As shown, one side surface of the display panel 1' is fixed to the backlight module 2' to form a display device. To heat the display panel 1', related technologies include heating traces 3' within the display panel 1'. (Refer to...) Figure 2 and Figure 3In related technologies, the heating traces 3' located in the display area AA' and the non-display area NA' have identical structures, and under the same area, the heating effect of the heating traces 3' on the display area AA' and the non-display area NA' is the same. However, the inventors discovered that in the initial stage of heating, the display effect of the center and the edge of the display area AA' in the actual product is different, with the display effect at the edge of the display area AA' being significantly worse. Through analysis, the inventors found that although the heating traces 3' were placed in the non-display area NA' to make the heating environment of the pixels at the edge of the display area AA' consistent with that of the pixels in the center of the display area AA', the faster heat dissipation at the edge of the display panel 1' caused a deviation in the actual heating environment of the pixels at the edge of the display area AA'. Further research revealed that the edge of the display panel 1' comes into contact with the backlight module 2', and there is an air layer 5' between the central area of ​​the display panel 1' and the backlight module 2'. Because the thermal conductivity of the backlight module 2' is higher than that of air, the edge dissipates heat faster. For details, please refer to... Figure 1 Taking an example of the assembly structure of a display device, in some cases, the edge of the display panel 1' is fixed to the middle frame 4' of the backlight module 2'. The middle frame 4' is generally made of metal, and its thermal conductivity is higher than that of the air layer 5' in the middle area of ​​the display panel 1'. This results in the heat dissipation rate at the edge of the display panel 1' being faster than that of the display area AA'. Using the solutions in related technologies, it is impossible to achieve a better heating effect on the edge area of ​​the display panel 1', causing a temperature difference between the display area and the non-display area NA' at the edge of the display panel 1'. This affects the performance of the liquid crystal material and / or other devices near the edge of the display panel 1', thereby affecting the reliability of the display panel 1'.

[0032] In view of the deficiencies of the aforementioned related technologies, the inventors propose the technical solution in this application. Specifically, this application provides a display panel, including a display area and a non-display area, wherein at least a portion of the non-display area is used for bonding with a backlight module;

[0033] The display panel also includes multiple heating traces located in both the display area and the non-display area; among them, within the same area, the resistance of the heating traces located in the non-display area is greater than the resistance of the heating traces located in the display area.

[0034] Through the above technical solution, the heating traces can heat the display area and non-display area of ​​the display panel to ensure the overall heating effect of the display panel; in addition, it can also enhance the heating effect of the non-display area of ​​the display panel, make up for the problem of rapid heat dissipation in the non-display area, make the temperature of the display area and non-display area of ​​the display panel more consistent, ensure the normal application of the display panel, and improve the reliability of the display panel.

[0035] The above is the core idea of ​​this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0036] Figure 4 This is a cross-sectional structural diagram of a display device provided in an embodiment of the present invention. Figure 5 This is a top view schematic diagram of a display panel provided in an embodiment of the present invention. Figure 6 for Figure 5 For a magnified structural diagram at point B, please refer to... Figures 4-6 In this embodiment of the invention, the display panel 1 includes a display area AA and a non-display area NA, at least a portion of the non-display area NA is used to bond with the backlight module 22; the display panel 1 also includes a plurality of heating traces 3, the heating traces 3 being located in the display area AA and the non-display area NA; wherein, within the same area, the resistance of the heating trace 3 located in the non-display area NA is greater than the resistance of the heating trace 3 located in the display area AA.

[0037] Specifically, such as Figures 4-6 As shown, at least a portion of the non-display area NA on the side of the display panel 1 facing the backlight module 2 is fixed to the mid-frame 4 of the backlight module 2. The heating traces 3 in the display panel 1 are simultaneously provided in both the display area AA and the non-display area NA, so as to heat the display area AA and the non-display area of ​​the display panel 1, thereby ensuring the heating effect of the non-display area NA in the display panel 1.

[0038] In addition, continue to refer to Figures 4-6 Given the faster heat dissipation rate at the junction of the non-display area NA of the display panel 1 and the backlight module 2, this embodiment also differentiates the heating traces 3 located in the display area AA and the non-display area NA. Specifically, the resistance of the heating traces 3 in the non-display area NA can be made greater than the resistance of the heating traces 3 in the display area AA within the same area. "Same area" can also be understood as a unit area, and the specific value is not limited; it can refer to the area of ​​a certain region along the extension direction of the display panel 1. The resistance of the heating traces 3 within the same area refers to the total resistance of all heating traces 3 within that area, i.e., the resistance value of the heating traces 3.

[0039] It is understandable that when heating the display panel 1 using heating trace 3, heat is generated by applying current or voltage to the heating trace 3. Heating trace 3 can be considered a heating wire, and according to the formula for calculating conductor power, power P = I... 2R and I represent the current flowing through the resistor, and R is the resistance. That is, when the current flowing through the heating trace 3 is constant, the heating power is positively correlated with the resistance of the heating trace 3; the greater the resistance of the heating trace 3 within the same area, the greater the heating power. Therefore, in this embodiment, the resistance of the heating trace 3 in the non-display area NA is set to be greater than the resistance of the heating trace 3 in the display area AA, so that the heating effect of the heating trace 3 on a certain area of ​​the non-display area NA is stronger than the heating effect of the heating trace 3 on the same area of ​​the display area AA. This improves the heating effect of the display panel 1 on the non-display area NA, compensates for the problem of rapid heat dissipation in the non-display area NA, and matches the heating effect of the heating trace 3 on different areas of the display panel 1 with the heating requirements of that area; making the temperature of the display area AA and the non-display area NA of the display panel 1 more consistent, ensuring that the temperature of each area of ​​the display panel 1 is maintained within the normal operating temperature range of the liquid crystal molecules.

[0040] It should be noted that the accompanying drawings of the embodiments of the present invention only show each heating line 3. In actual application, any one or more heating lines 3 form a heating circuit. Heating terminals (not shown in the figure) are provided at both ends of the heating circuit. The heating chip (not shown in the figure) provides current or voltage to the heating circuit through the heating terminals.

[0041] The specific layout and structural parameters of the heating traces 3 are not limited in this embodiment of the invention, and those skilled in the art can set them according to actual needs. It is sufficient to ensure that, for the same area, the resistance of the heating traces 3 located in the non-display area NA is greater than the resistance of the heating traces 3 in the non-display area NA. Figure 5 and Figure 6 In the embodiment shown, the display panel 1 may include pixel units 6 arranged in an array along the first direction X and the second direction Y. Multiple heating traces 3 may extend along the first direction X and be arranged along the second direction Y. Along the first direction X, the heating traces 3 extend to the display area AA and the non-display area NA. The actual arrangement is not limited to this.

[0042] In other embodiments of the present invention (not shown), multiple heating lines 3 may extend along the second direction Y and be arranged along the first direction X. Along the second direction Y, the heating lines 3 extend to the display area AA and the non-display area NA. Alternatively, the multiple heating lines 3 may be arranged in a grid along the first direction X and the second direction Y. The heating lines 3 may extend along both the first direction X and the second direction Y to the display area AA and the non-display area NA to heat the display area AA and the non-display area NA.

[0043] Those skilled in the art can configure the specific structure of the backlight module 2 and other film layer structures within the display panel 1 according to actual needs, for example... Figure 4As shown, the display panel 1 may include an array substrate 11, a liquid crystal layer 12, and an opposing substrate 13, which are sequentially stacked along the thickness direction of the display panel 1. The array substrate 11 is close to the backlight module 2. A pixel driving circuit (not shown in the figure) is provided in the array substrate 11. The pixel driving circuit is used to drive the liquid crystal molecules to deflect, so that the display panel 1 emits light. The opposing substrate 13 may be a color filter substrate, mainly used for light filtering to achieve color display. The specific arrangement of the above film layer structure can be set by those skilled in the art according to actual needs. This embodiment of the invention does not elaborate on or limit this.

[0044] The display panel provided in this invention includes a display area and a non-display area, with at least a portion of the non-display area used for bonding with a backlight module. The display panel also includes multiple heating traces located in both the display and non-display areas. These heating traces heat both the display and non-display areas of the display panel to ensure overall heating performance. Furthermore, this invention also incorporates heating traces with a higher resistance in the non-display area than those in the display area, thereby enhancing the heating effect on the non-display area and mitigating the problem of rapid heat dissipation in the non-display area. This results in a more uniform temperature distribution between the display and non-display areas, ensuring that the temperature of each area of ​​the display panel remains within the normal operating temperature range of the liquid crystal molecules.

[0045] Optional, Figure 7 for Figure 5 For another enlarged structural diagram at point B, please refer to [the diagram]. Figure 6 and Figure 7 In a possible embodiment, the heating trace 3 includes a first heating trace 31 and a second heating trace 32. The first heating trace 31 is located in the display area AA, and the second heating trace 32 is located in the non-display area NA. Within the same area, the length of the second heating trace 32 is greater than the length of the first heating trace 31 (e.g., ...). Figure 6 (as shown); and / or, the line width of the second heating trace 32 is smaller than the line width of the first heating trace 31 (as shown). Figure 7 (As shown).

[0046] Specifically, such as Figure 6 and Figure 7 As shown, the first heating trace 31 and the second heating trace 32 can be interconnected to form an integrated heating trace 3. The first heating trace 31 is the portion of the heating trace 3 located in the display area AA, and the second heating trace 32 is the portion of the heating trace 3 located in the non-display area NA. In this way, the first heating trace 31 and the second heating trace 32 can share a single heating terminal (not shown in the figure), thereby saving space on the display panel 1 and simplifying the wiring structure; at the same time, it can also avoid the problem of excessive load on the heating chip (not shown in the figure) caused by too many heating terminals.

[0047] The heating trace 3 can be driven by constant current or constant voltage. Those skilled in the art can set it according to actual needs. This embodiment of the invention does not elaborate on or limit this.

[0048] Furthermore, the formula for calculating the conductor resistance is: Resistance R = ρL / S, where ρ is the resistivity of the conductor, determined by the conductor's inherent properties, L is the length of the conductor, and S is the cross-sectional area of ​​the conductor. According to this formula, when the resistivity ρ is constant, the conductor resistance is directly proportional to the conductor length and inversely proportional to the conductor's cross-sectional area. Therefore, in this embodiment, the resistance of the second heating trace 32 can be increased by increasing the length of the second heating trace 32 for the same area, and / or by decreasing the line width of the second heating trace 32.

[0049] As an example, regarding the scheme of increasing the length of the second heating trace 32 for the same area, the first heating trace 31 can be set to extend in a straight line within the display area AA, and the second heating trace 32 can be set to extend in a bent shape within the non-display area NA.

[0050] Specifically, please refer to Figure 6 The second heating trace 32 in the non-display area NA can be configured as a bent structure, while the first heating trace 31 in the display area AA can be a straight structure. Thus, within the same area, the length of the bent second heating trace 32 will necessarily be greater than the length of the straight second heating trace 32. With this configuration, the fabrication process of the heating trace 3 in the display area AA is relatively simple, and the linewidth of the heating trace 3 is consistent between the display area AA and the non-display area NA, ensuring the effective connection between the first heating trace 31 and the second heating trace 32.

[0051] The bending shape of the second heating line 32 is not limited, and can be a curved bending shape, a serpentine bending shape, or a broken line bending shape, but is not limited to these.

[0052] Figure 7 In the illustrated embodiment, the linewidth of the second heating trace 32 extending to the non-display area NA is reduced, thereby reducing the cross-sectional area of ​​the second heating trace 32. This results in the resistance of the second heating trace 32 being greater than that of the first heating trace 31 for the same length. With this configuration, the fabrication process of the heating trace 3 in both the display area AA and the non-display area NA is relatively simple, reducing the overall fabrication difficulty of the heating trace 3.

[0053] In other embodiments, the second heating trace 32 may be configured to extend in a bent shape, while the first heating trace 31 may extend in a straight shape. Furthermore, the line width of the second heating trace 32 may be smaller than that of the first heating trace 31. In this way, the heating effect of the heating trace 3 on the non-display area NA may be greatly improved, thus effectively addressing the problem of rapid heat dissipation in the non-display area NA.

[0054] in, Figure 6 and Figure 7 The area shown is the arrangement of the heating traces 3 in the display area AA and the surrounding regular non-display area. Figure 8 and Figure 9 for Figure 5 A partially enlarged structural diagram of the two display panels at point C. Figure 8 and Figure 9 The area shown illustrates the arrangement of heating traces 3 within the display area AA and its surrounding irregularly shaped non-display area. (Refer to...) Figure 8 and Figure 9 In the irregular non-display area, the heating trace 3 still meets the above design requirements.

[0055] Optional, Figure 10 This is a partially enlarged structural diagram of a display panel provided in an embodiment of the present invention, which can be referred to as follows. Figure 10 In a possible embodiment, the second heating trace 32 includes at least one second bending unit 321, and the density of the second bending unit 321 gradually increases along the extension direction of the second heating trace 32; the extension direction of the second heating trace 32 is the direction from the first end 32a near the display area AA to the second end 32b away from the display area AA.

[0056] Specifically, such as Figure 10 As shown, the second heating trace 32 can be composed of one or more bending units, and the bending unit constituting the second heating trace 32 can be defined as the second bending unit 321. The extension direction of the second heating trace 32 is parallel to the first direction X, so as to... Figure 10 In terms of the orientation shown, the first direction X is the extension direction of the second heating trace 32, that is, the direction from the first end 32a of the second heating trace 32 to the second end 32b. Along the direction from the first end 32a to the second end 32b, the second heating trace 32 gradually approaches the outer edge of the display panel 1.

[0057] Furthermore, in this embodiment, the arrangement density of the second bending unit 321 can be gradually increased along the direction from the first end 32a to the second end 32b. This results in a larger arrangement density of the second bending unit 321 near the outer edge of the display panel 1 and a smaller arrangement density of the second bending unit 321 near the display area AA.

[0058] It is understandable that the outer edge of the display panel 1 is closer to the external environment. When the external environment temperature is low, the closer to the outer edge of the display panel 1, the faster the heat dissipation rate of the display panel 1. Based on this, in this embodiment, the direction from the first end 32a to the second end 32b along the second heating line 32 is set, and the density of the second bending unit 321 gradually increases, so that the resistance of the second heating line 32 per unit area along the first direction X gradually increases, thereby enhancing the heating effect on the edge of the display panel 1 and better maintaining the temperature of the edge of the display panel 1.

[0059] Optional, Figure 11 This is a partially enlarged structural diagram of another display panel provided in an embodiment of the present invention, which can be referred to. Figure 11 In a possible embodiment, the second heating trace 32 includes at least one second bending unit 321, and the density of the second bending unit 321 gradually decreases along the extension direction of the second heating trace 32; the extension direction of the second heating trace 32 is the direction from the first end 32a near the display area AA to the second end 32b away from the display area AA; the display panel 1 also includes a driving module 7, which is located in the non-display area NA, and the driving module 7 is located on the side of at least a portion of the second heating trace 32 away from the display area AA.

[0060] Specifically, Figure 11 In the illustrated embodiment, the driving module 7 can be positioned on the side of the second heating trace 32 furthest from the display area AA, that is, the driving module 7 is closer to the second end 32b of the second heating trace 32. The driving module 7 may include a driving chip and / or a heating chip. The driving chip is used to provide display-required signals to the pixel units 6 in the display panel 1, and the heating chip is used to provide heating-required signals to the heating trace 3. The heating chip may be disposed separately from or integrated with the driving chip; this embodiment of the invention does not impose limitations on this.

[0061] It is understandable that during the display process of the display panel 1, the driving module 7 is continuously working and generates heat, resulting in a heat source at the second end 32b of the second heating trace 32. In this configuration, the heat dissipation rate of the area near the second end 32b of the second heating trace 32 in the display panel 1 may be lower than the heat dissipation rate of the area near the first end 32a of the second heating trace 32 (i.e., the area near the display area AA). Based on this, in this embodiment, the variation law of the arrangement density of the second bending unit 321 can be set to... Figure 10The embodiment shown is the opposite. That is, in this embodiment, along the direction from the first end 32a to the second end 32b of the second heating trace 32, the arrangement density of the second bending unit 321 gradually decreases, so that the resistance of the second heating trace 32 per unit area gradually decreases along this direction. This improves the heating effect of the heating trace 3 on the part of the non-display area NA that is close to the display area AA, and appropriately reduces the heating effect of the heating trace 3 on the part of the non-display area NA that is close to the driving module 7, thus maintaining the temperature consistency of different areas of the display panel 1.

[0062] Figure 10 and Figure 11 In the illustrated embodiment, the line width of the second heating trace 32 is smaller than that of the first heating trace 31. However, this is not a limitation. In other embodiments, the line width of the second heating trace 32 may be equal to that of the first heating trace 31.

[0063] Correspondingly, Figure 12 This is a partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention, with reference to... Figure 12 In a possible embodiment, the line width of the second heating trace 32 gradually decreases along the extension direction of the second heating trace 32; the extension direction of the second heating trace 32 is the direction from the first end 32a near the display area AA to the second end 32b away from the display area AA.

[0064] Specifically, along the direction from the first end 32a to the second end 32b of the second heating trace 32, the line width of the second heating trace 32 can be gradually reduced, so that the resistance of the second heating trace 32 per unit area gradually increases along this direction, thereby increasing the heating effect of the second heating trace 32 on the outer edge of the display panel 1 and better maintaining the temperature of the edge of the display panel 1.

[0065] Figure 13 This is a partially enlarged structural diagram of another display panel provided in an embodiment of the present invention. Figure 13 In the embodiment shown, the line width of the second heating trace 32 gradually increases along the extension direction of the second heating trace 32; the extension direction of the second heating trace 32 is the direction from the first end of the second heating trace 32 near the display area AA to the second end away from the display area AA; the display panel 1 also includes a driving module 7, which is located in the non-display area NA, and the driving module 7 is located on the side of at least a portion of the second heating trace 32 away from the display area AA.

[0066] Specifically, in this embodiment, the setting method of the driving module 7 is the same as... Figure 11Similar to the illustrated embodiment, based on the location of the driving module 7, the direction from the first end 32a to the second end 32b of the second heating trace 32 can be configured such that the linewidth of the second heating trace 32 gradually increases, resulting in a gradual decrease in resistance per unit area along this direction. This enhances the heating effect of the heating trace 3 on the portion of the non-display area NA near the display area AA, while appropriately reducing the heating effect of the heating trace 3 on the portion of the non-display area NA near the driving module 7, thus maintaining temperature consistency across different areas of the display panel 1.

[0067] One point that needs to be made is that, Figure 12 and Figure 13 The illustrated embodiment exemplarily shows that the second heating trace 32 extends in a straight line. When the second heating trace 32 is in a straight line... Figure 6 When the extension is bent as shown, the line width gradient scheme of the second heating trace 32 can also be set in the manner described above. This embodiment of the invention will not be described in detail here.

[0068] Optional, Figure 14 This is a partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention, which can be referred to. Figure 14 In a possible embodiment, the first heating trace 31 may be configured to extend in a bent shape within the display area AA, and the second heating trace 32 may be configured to extend in a bent shape within the non-display area NA. The first heating trace 31 includes a plurality of first bending units 311, and the second heating trace 32 includes a plurality of second bending units 321. Within the same area, the density of the first bending units 311 is less than the density of the second bending units 321.

[0069] Specifically, such as Figure 14 As shown, in this embodiment, both the first heating trace 31 and the second heating trace 32 can be configured to extend in a bent shape. The first heating trace 31 is composed of one or more first bending units 311, and the second heating trace 32 is composed of one or more second bending units 321. To ensure that the resistance of the second heating trace 32 is greater than that of the first heating trace 31 within the same area, the arrangement density of the second bending units 321 in the non-display area NA can be set to be greater than the arrangement density of the first bending units 311 in the display area AA within the same area. This ensures that the second heating trace 32 has a stronger heating effect on the non-display area NA, maintaining temperature uniformity in different areas of the display panel 1.

[0070] Another point that needs to be made is that, Figure 14 As shown in the embodiment, the first bending unit 311 bends around the pixel unit 6. The arrangement of the first bending unit 311 is only an example and is not limited to this. Those skilled in the art can adjust the arrangement of the first bending unit 311 according to the actual situation.

[0071] Optional, Figure 15 This is a partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention, which can be referred to in conjunction with reference to [reference needed]. Figure 15 In a possible embodiment, the display area AA includes an irregular edge 8 and a regular edge 9. The irregular edge 8 may include an arc edge, and the regular edge 9 may include a straight edge. The non-display area NA includes a first non-display area NA1 and a second non-display area NA2. The first non-display area NA1 is located on the side of the irregular edge 8 away from the display area AA, and the second non-display area NA2 is located on the side of the regular edge 9 away from the display area AA. Within the same area, the resistance of the heating trace 3 located in the first non-display area NA1 is greater than the resistance of the heating trace 3 located in the second non-display area NA2.

[0072] Specifically, such as Figure 5 and Figure 15 As shown, in this embodiment, the display panel 1 can be an irregularly shaped display panel 1. Correspondingly, the display area edge includes an irregularly shaped edge 8 and a regular edge 9. The regular edge 9 can extend in a straight line, while the irregularly shaped edge 8 can extend in a non-straight line, specifically, it can extend in an arc shape. The display area edge is used to separate the display area AA and the non-display area NA. Specifically, the irregularly shaped edge 8 is used to separate the display area AA and the first non-display area NA1, and the regular edge 9 is used to separate the display area AA and the second non-display area NA2.

[0073] It can be understood that, since the irregular edge 8 extends in an arc and the regular edge 9 extends in a straight line, if two points are taken on the irregular edge 8, the extension length of the irregular edge 8 between these two points is greater than the straight-line distance between the two points; similarly, if two points are taken on the regular edge 9, the extension length of the regular edge 9 between these two points is equal to the straight-line distance between the two points. Therefore, in the area corresponding to the shape formed by taking a certain length in the extension direction of the display area edge as the long side and a certain length perpendicular to the long side as the short side, the extension length of the irregular edge 8 is longer than the extension length of the regular edge 9. As the extension length of the display area edge increases, the contact area between the non-display area NA and the external environment and / or the backlight module 2 increases; that is, the heat dissipation rate of the first non-display area NA1 corresponding to the irregular edge 8 is greater than the heat dissipation rate of the second non-display area NA2 corresponding to the regular edge 9.

[0074] Based on this, this embodiment further proposes that, within the same area, the resistance of the heating trace 3 located in the first non-display area NA1 can be set to be greater than the resistance of the heating trace 3 located in the second non-display area NA2. This improves the heating effect of the heating trace 3 on the first non-display area NA1, making the heating effect of the heating trace 3 on different non-display areas NA of the display panel 1 match the heating requirements of the non-display areas NA, further ensuring the temperature consistency of each area of ​​the display panel 1.

[0075] Optionally, the length of the heating trace 3 located in the first non-display area NA1 can be set to be greater than the length of the heating trace 3 located in the second non-display area NA2 for the same area, and / or the line width of the heating trace 3 located in the first non-display area NA1 can be set to be smaller than the line width of the heating trace 3 located in the second non-display area NA2, so as to achieve differentiated settings of the heating trace 3 in the first non-display area NA1 and the second non-display area NA2. For specific implementation methods, please refer to the above embodiments, which will not be repeated here. Figure 15 The example shows that both the heating trace 3 located in the second non-display area NA2 and the heating trace 3 located in the first non-display area NA1 extend in a bent shape, and the density of the bent units of the heating trace 3 in the second non-display area NA2 is less than the density of the bent units of the heating trace 3 in the first non-display area NA1. This increases the resistance of the heating trace 3 in the non-display area NA1, thereby improving the heating effect on the first non-display area NA1, but the actual implementation is not limited to this.

[0076] Figure 16 for Figure 5 For a magnified structural diagram at point D, please refer to... Figure 5 , Figure 8 and Figure 16 The irregular edge 8 includes a first irregular edge 81 and a second irregular edge 82. The line connecting the two endpoints of the first irregular edge 81 is located in the display area AA, and the line connecting the two endpoints of the second irregular edge 82 is located in the non-display area NA. The first non-display area includes a first sub-non-display area NA11 and a second sub-non-display area NA12. The first sub-non-display area NA11 is located on the side of the first irregular edge 81 away from the display area AA, and the second sub-non-display area NA12 is located on the side of the second irregular edge 82 away from the display area AA. The heating trace 3 includes a first heating trace 31, a third heating trace 33, and a fourth heating trace 34. The first heating trace 31 is located in the display area AA, the third heating trace 33 is located in the first sub-non-display area NA11, and the fourth heating trace 34 is located in the second sub-non-display area NA12. Within the same area, the resistance of the third heating trace 33 is greater than the resistance of the fourth heating trace 34.

[0077] Specifically, for some complex-shaped display devices, such as automotive displays, they may include various types of irregularly shaped outer edges. For example... Figure 5 , Figure 8 and Figure 16As shown, the irregular edge 8 of the display area AA can be divided into a first irregular edge 81 and a second irregular edge 82, both of which extend in an arc shape. Along the direction from the center of the display panel 1 to the first irregular edge 81, the first irregular edge 81 has an outwardly convex arc curve, while along the direction from the center of the display panel 1 to the second irregular edge 82, the second irregular edge 82 has an inwardly concave arc curve. The outer side of the second irregular edge 81 can be used to place functional components such as (not shown in the figure), a camera (not shown in the figure), and / or various sensors (not shown in the figure) to achieve functions such as image capture, light sensing, and fingerprint recognition.

[0078] like Figure 8 and Figure 16 As shown, for the first irregular edge 81, due to its outward convexity, heat diffuses outward in a divergent manner when the first sub-non-display area NA11 is transferred outward; while for the second irregular edge 82, due to its inward concavity, heat may be transferred back and forth between the first irregular edges 81 when the second sub-non-display area NA12 is transferred outward, which can also be understood as the second irregular edge 82 having a certain heat-gathering effect. Thus, under normal circumstances, the heat dissipation rate of the first sub-non-display area NA11 will be faster than that of the second sub-non-display area NA12.

[0079] Based on this, this embodiment further proposes that the heating traces 3 located in the first sub-non-display area NA11 and the second sub-non-display area NA12 can be configured differently. Within the same area, the resistance of the third heating trace 33 located in the first sub-non-display area NA11 can be set to be greater than the resistance of the fourth heating trace 34 located in the second sub-non-display area NA12. Both the third heating trace 33 and the fourth heating trace 34 can be the second heating trace 32 described in the above embodiment. Therefore, within the same area, the resistance of both the third heating trace 33 and the fourth heating trace 34 can be greater than the resistance of the first heating trace 31.

[0080] In this configuration, the heating effect of the third heating line 33 on the first sub-non-display area NA11 is stronger than the heating effect of the fourth heating line 34 on the second sub-non-display area NA12. This makes the heating effect of the heating line 3 on the different irregular non-display areas NA of the display panel 1 match the heating requirements of the irregular non-display areas NA, further ensuring the temperature consistency of each area of ​​the display panel 1.

[0081] The specific configuration for the resistance difference between the third heating trace 33 and the fourth heating trace 34 can be referred to the above embodiment. For example, please continue to refer to... Figure 8 and Figure 16In a possible embodiment, the length of the third heating trace 33 may be greater than the length of the fourth heating trace 34 within the same area; and / or, the line width of the third heating trace 33 may be greater than the line width of the fourth heating trace 34.

[0082] Specifically, similar to the above embodiments, the resistance of the second heating trace 32 per unit area can be increased by increasing the length of the third heating trace 33 for the same area and / or reducing the line width of the third heating trace 33. Figure 8 and Figure 16 The resistance of the third heating trace 33 is increased by increasing the length of the third heating trace 33 per unit area. The difference in line width between the third heating trace 33 and the fourth heating trace 34 is not shown.

[0083] For example, in a possible embodiment, continue to refer to Figure 8 and Figure 16 The first heating line 31 can be set to extend in a straight line within the display area AA, the third heating line 33 can be set to extend in a bent shape within the first sub-non-display area NA11, and the fourth heating line 34 can be set to extend in a bent shape within the second sub-non-display area NA12. The third heating line 33 includes at least one third bending unit 331, and the fourth heating line 34 includes at least one fourth bending unit 341. Within the same area, the density of the third bending unit 331 is greater than the density of the fourth bending unit 341.

[0084] Specifically, such as Figure 8 and Figure 16 As shown, the first heating trace 31 extends in a straight line, while the third heating trace 33 and the fourth heating trace 34 both extend in a bent shape. The third heating trace 33 is composed of one or more third bending units 331, and the fourth heating trace 34 is composed of one or more fourth bending units 341. To ensure that the resistance of the third heating trace 33 is greater than that of the fourth heating trace 34 within the same area, the arrangement density of the third bending units 331 in the first sub-non-display area NA11 can be set to be greater than the arrangement density of the fourth bending units 341 in the second sub-non-display area NA12 within the same area. This ensures that the third heating trace 33 has a stronger heating effect on the first sub-non-display area NA11.

[0085] In addition to the above-described embodiments, the present invention also proposes the following specific embodiments for reducing the resistance of the fourth heating trace 34.

[0086] For example, Figure 17 and Figure 18 This is a partially enlarged structural diagram of two more display panels provided in embodiments of the present invention. Figure 17 and Figure 18 The images shown are of the second sub-non-display area NA12 of display panel 1. (See reference...) Figure 17 and Figure 18 In a possible embodiment, the fourth heating trace 34 includes a first portion 342 and a second portion 343, which are connected in parallel.

[0087] Specifically, those skilled in the art will know that the total resistance of two conductors connected in parallel is less than the resistance of either conductor alone. Based on this, as... Figure 17 and Figure 18 As shown, the fourth heating trace 34 can be configured by consisting of a first portion 342 and a second portion 343 connected in parallel. This reduces the resistance of each fourth heating trace 34. In this embodiment, the third heating trace 33 can be configured in the same way as the first portion 341 or the second portion 342, so that for the same area, the resistance of the fourth heating trace 34 is less than the resistance of the third heating trace 33, thereby ensuring that the overall heating effect of the fourth heating trace 34 on the second sub-non-display area NA12 is weaker than the heating effect of the third heating trace 33 on the first sub-non-display area NA11.

[0088] For example, please refer to... Figure 17 and Figure 18 The first section 342 and the second section 343 are arranged on the same layer and connected in parallel through the parallel section 344; or the first section 342 and the second section 343 are arranged on different layers and connected in parallel through the via 345.

[0089] Specifically, Figure 17 and Figure 18 Two parallel connection methods for the first part 342 and the second part 343 are given. Figure 17 In the illustrated embodiment, the first portion 342 and the second portion 343 are disposed on the same film layer of the display panel 1, and the two are connected by a parallel portion 344, which is also located on the same film layer. In this way, the first portion 342, the second portion 343 and the parallel portion 344 can be formed in the same process, simplifying the fabrication of the fourth heating trace 34.

[0090] Figure 18 In the illustrated embodiment, the first portion 342 and the second portion 343 are disposed on different film layers of the display panel 1, and are connected in parallel through a via 345. This reduces the area occupied by the first portion 342 and the second portion 343 in the plane extending along the display panel 1.

[0091] For example, Figure 19 This is a partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention, which can be referred to. Figure 19In another optional embodiment, two adjacent fourth heating lines 34 can be connected in parallel. Specifically, in this embodiment, two adjacent fourth heating lines 34 can be directly connected in parallel to reduce the resistance of the fourth heating lines 34.

[0092] Optional, Figure 20 This is a partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention, which can be referred to. Figure 20 In a possible embodiment, the display area AA includes a display area edge 10, which separates the display area AA from the non-display area NA; the first heating trace 31 and the second heating trace 32 are connected, and on the plane where the display panel 1 is located, the projection of the connection area 36 of the first heating trace 31 and the second heating trace 32 overlaps with the projection of the display area edge 10, and the line width of the heating trace 3 in the connection area 36 is smaller than the line width of the heating trace 3 in other areas.

[0093] Specifically, as mentioned in the above embodiments, the first heating trace 31 and the second heating trace 32 are interconnected to form a heating trace 3 extending to the display area AA and the non-display area NA. The connection area 36 of the first heating trace 31 and the second heating trace 32 overlaps with the edge 10 of the display area along the direction perpendicular to the plane of the display panel 1.

[0094] Since the display area AA needs to display data, to ensure the normal operation of the liquid crystal molecules within the display area AA, the heating effect of the heating trace 3 on the edge 10 of the display area can be greater than the heating effect on the non-display area NA. Furthermore, since the edge 10 of the display area is closer to the outer edge of the display panel 1 than the display area AA, the heating effect of the heating trace 3 on the edge 10 of the display area can be greater than the heating effect on the display area AA.

[0095] For the above considerations, the line width of the heating trace 3 in the connection area 36 can be further limited to be smaller than the line width of other parts of the heating trace 3. Simply put, the line width of the heating trace 3 in the connection area 36 is smaller than the line width of the first heating trace 31 excluding the connection area 36, ​​and smaller than the line width of the second heating trace 32 excluding the connection area 36. This ensures that, for the same length, the resistance of the heating trace 3 in the connection area 36 is greater than the resistance in other areas of the heating trace 3, thereby improving the heating effect of the heating trace 3 on the edge of the display area 10.

[0096] Optional, Figure 21 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention, which can be referred to. Figure 5 and Figure 21 In a possible embodiment, the non-display area NA surrounds the display area AA, and / or the non-display area NA is located within the area where the display area AA is located.

[0097] Figure 5 In the embodiment shown, the non-display area NA surrounds the display area AA, that is, the entire non-display area NA is located on the periphery of the display area AA; Figure 21 In the illustrated embodiment, a portion of the non-display area NA may be located within the area enclosed by the edge of the display area AA. In this configuration, the non-display area NA within the area enclosed by the display area AA corresponds to the portion between the opening area AA-hole and the display area AA of the display panel 1. A hole is cut into the display panel 1 at the opening area AA-hole, and functional components such as an earpiece (not shown), a camera (not shown), and / or various sensors (not shown) can be placed within the opening area AA-hole to achieve functions such as camera recording, light sensing, and fingerprint recognition. The non-display area NA between the opening area AA-hole and the display area AA is generally also connected to the backlight module (…). Figure 21 (Not shown in the image) When the surface is attached and fixed, the heat dissipation rate may be greater than that of the display area AA, which also applies to the solution in this application.

[0098] Optionally, in possible embodiments, Figure 22 This is a cross-sectional structural diagram of a display panel provided in an embodiment of the present invention, which can be referred to as follows. Figure 22 The display panel 1 may also include a gate metal layer 110, a source / drain metal layer 111, a pixel electrode layer 112, and a common electrode layer 113. The heating trace 3 is formed in any one or more of the gate metal layer 110, the source / drain metal layer 111, the pixel electrode layer 112, and the common electrode layer 113.

[0099] As described in the above embodiments, the display panel 1 may include an array substrate 11, and the pixel driving circuit in the array substrate 11 may include at least one transistor T. The display panel 1 may also be provided with a pixel electrode layer 112 and a common electrode layer 113. The pixel electrode layer 112 may include a plurality of independent pixel electrodes 1120, and the common electrode layer 113 may include a plurality of common electrodes 1130. Along the thickness direction of the display panel 1, the pixel electrodes 1120 and the common electrodes 1130 may or may not overlap; wherein, the common electrode layer 113 may be a common layer, but is not limited thereto.

[0100] like Figure 22 As shown, transistor T can be electrically connected to pixel electrode 1120. When transistor T is turned on, it transmits an electrical signal to pixel electrode 1120, and simultaneously, driving module 7 transmits another electrical signal to common electrode 1130. An electric field is formed between pixel electrode 1120 and common electrode 1130, thereby driving the liquid crystal molecules within the range of the electric field to deflect. Pixel electrode 1120 and common electrode 1130 can be located on the same side of liquid crystal layer 12 or on opposite sides of liquid crystal layer 12. This embodiment of the invention does not limit this, and those skilled in the art can set it according to actual needs. Figure 22The pixel electrode 1120 and the common electrode 1130 are located on the same side of the liquid crystal layer 12, forming a boundary electric field switching type display panel. This arrangement allows the display panel 1 to have a wider viewing angle. Furthermore, Figure 22 The diagram shows that the common electrode 1130 is located between the pixel electrode 1120 and the liquid crystal layer 12. However, this is not the only embodiment. In other embodiments, the pixel electrode 1120 may also be located between the common electrode 1130 and the liquid crystal layer 12.

[0101] The transistor T may include a gate G, a source S, and a drain D. The gate G may be connected to a scan signal line (not shown in the figure), the source S (drain D) may be connected to a data signal line (not shown in the figure), and the drain D (source S) may be connected to the pixel electrode 1120. The gate G, source S, drain D, pixel electrode 1120, and common electrode 1130 may all be made of metal. The gate G may be formed in the gate metal layer 110, and the source S and drain D may be formed in the source-drain metal layer 111. The heating trace 3 in this application may be formed in any one or more of the aforementioned metal layers. Thus, there is no need to additionally fabricate the metal layer containing the heating trace 3, ensuring that the display panel 1 has a relatively thin thickness.

[0102] Optional, Figure 23 This is a partially enlarged structural schematic diagram of another display panel provided in an embodiment of the present invention, which can be referred to. Figure 23 In a possible embodiment, the display panel 1 may further include a first signal transmission line 1131, at least a portion of which is located in the non-display area NA; on the plane of the display panel 1, the distance d1 between the projection of the heating trace 3 located in the non-display area NA and the projection of the first signal transmission line 1131 is greater than or equal to a preset distance threshold.

[0103] Specifically, such as Figure 23 As shown, the first signal transmission line 1131 can be any signal transmission line in the non-display area NA, such as a common electrode bus, but is not limited to this. The driving module 7 transmits the voltage signal to the common electrode 1 through the common electrode bus. Since some of the first signal transmission lines 1131 and the heating trace 3 are located in the non-display area NA, in order to avoid coupling of the voltage signals transmitted by the two signal traces and increase the signal transmission impedance, in this embodiment, the spacing d1 between adjacent first signal transmission lines 1131 and heating trace 3 along the extension direction of the plane where the display panel 1 is located can be set to be greater than or equal to a preset spacing threshold, so as to ensure the normal transmission of voltage signals in the two signal traces.

[0104] The specific value of the preset spacing threshold is not limited. Those skilled in the art can set it in practical applications according to the arrangement of signal transmission lines in the non-display area NA, etc. This invention will not describe it in detail.

[0105] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 24 This is a top view of a display device provided in an embodiment of the present invention, which can be referred to in conjunction with reference to [reference needed]. Figure 4 and Figure 24 The display device includes a display panel 1 and a backlight module 2 as provided in any embodiment of the present invention. The backlight module 2 is located on the side of the display panel 1 away from the light-emitting side, and the backlight module 2 is bonded and fixed to at least a portion of the non-display area NA of the display panel 1. The display device provided in the embodiments of the present invention includes all the technical features and beneficial effects of the display panel 1 provided in any embodiment of the present invention, which will not be repeated here. Exemplarily, the display device can be an electronic device such as an in-vehicle display, a computer, a smart wearable device (e.g., a smartwatch), and a mobile phone device, and the embodiments of the present invention do not limit this.

[0106] Figure 24 The recessed area of ​​the display device shown can be used to place functional components such as an earpiece (not shown), a camera (not shown), and / or various sensors (not shown) to achieve functions such as video recording, light sensing, and fingerprint recognition. Taking an in-vehicle display device as an example, a camera can be placed in the recessed area of ​​the in-vehicle display device to collect image information of the driver or passengers, thereby improving driving safety.

[0107] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes a display area and a non-display area, with at least a portion of the non-display area being bonded to a backlight module; an air layer exists between the display area and the backlight module; and the heat dissipation rate at the point where the non-display area of ​​the display panel is bonded to the backlight module is greater than the heat dissipation rate of the air layer. The display panel also includes multiple heating traces located in the display area and the non-display area; wherein, within the same area, the resistance of the heating trace located in the non-display area is greater than the resistance of the heating trace located in the display area; The display area includes irregular edges and regular edges; the irregular edges include curved edges and the regular edges include straight edges. The non-display area includes a first non-display area and a second non-display area. The first non-display area is located on the side of the irregular edge that is away from the display area, and the second non-display area is located on the side of the regular edge that is away from the display area. Within the same area, the resistance of the heating trace located in the first non-display area is greater than the resistance of the heating trace located in the second non-display area.

2. The display panel according to claim 1, characterized in that, The heating trace includes a first heating trace and a second heating trace, wherein the first heating trace is located in the display area and the second heating trace is located in the non-display area; Within the same area, the length of the second heating trace is greater than the length of the first heating trace; and / or, the line width of the second heating trace is less than the line width of the first heating trace.

3. The display panel according to claim 2, characterized in that, The first heating trace extends in a straight line within the display area, while the second heating trace extends in a bent shape within the non-display area.

4. The display panel according to claim 3, characterized in that, The second heating trace includes at least one second bending unit, and the density of the second bending unit gradually increases along the extension direction of the second heating trace; the extension direction of the second heating trace is the direction from the first end of the second heating trace near the display area to the second end away from the display area.

5. The display panel according to claim 3, characterized in that, The second heating trace includes at least one second bending unit, and the density of the second bending unit gradually decreases along the extension direction of the second heating trace; the extension direction of the second heating trace is the direction from the first end of the second heating trace near the display area to the second end away from the display area; The display panel further includes a driving module located within the non-display area, and the driving module is located on the side of at least a portion of the second heating traces that are away from the display area.

6. The display panel according to claim 3, characterized in that, Along the extension direction of the second heating trace, the line width of the second heating trace gradually decreases; the extension direction of the second heating trace is the direction from the first end of the second heating trace near the display area to the second end away from the display area.

7. The display panel according to claim 3, characterized in that, Along the extension direction of the second heating trace, the line width of the second heating trace gradually increases; the extension direction of the second heating trace is the direction from the first end of the second heating trace near the display area to the second end away from the display area; The display panel further includes a driving module located within the non-display area, and the driving module is located on the side of at least a portion of the second heating traces that are away from the display area.

8. The display panel according to claim 2, characterized in that, The first heating trace extends in a bent shape within the display area, and the second heating trace extends in a bent shape within the non-display area; The first heating trace includes multiple first bending units, and the second heating trace includes multiple second bending units. Within the same area, the density of the first bending units is less than the density of the second bending units.

9. The display panel according to claim 1, characterized in that, The irregular edge includes a first irregular edge and a second irregular edge, the line connecting the two endpoints of the first irregular edge is located in the display area, and the line connecting the two endpoints of the second irregular edge is located in the non-display area; The first non-display area includes a first sub-non-display area and a second sub-non-display area. The first sub-non-display area is located on the side of the first irregular edge that is away from the display area, and the second non-display area is located on the side of the second irregular edge that is away from the display area. The heating trace includes a first heating trace, a third heating trace, and a fourth heating trace. The first heating trace is located in the display area, the third heating trace is located in the first sub-non-display area, and the fourth heating trace is located in the second sub-non-display area. Within the same area, the resistance of the third heating trace is greater than the resistance of the fourth heating trace.

10. The display panel according to claim 9, characterized in that, Within the same area, the length of the third heating trace is greater than the length of the fourth heating trace; and / or, the linewidth of the third heating trace is greater than the linewidth of the fourth heating trace.

11. The display panel according to claim 10, characterized in that, The first heating trace extends in a straight line within the display area, the third heating trace extends in a bent shape within the first sub-non-display area, and the fourth heating trace extends in a bent shape within the second sub-non-display area. The third heating trace includes at least one third bending unit, and the fourth heating trace includes at least one fourth bending unit. Within the same area, the density of the third bending unit is greater than the density of the fourth bending unit.

12. The display panel according to claim 9, characterized in that, The fourth heating trace includes a first section and a second section, which are connected in parallel.

13. The display panel according to claim 12, characterized in that, The first and second divisions are arranged on the same layer and connected in parallel through parallel divisions; or, The first and second portions are arranged in different layers and connected in parallel through vias.

14. The display panel according to claim 9, characterized in that, The two adjacent fourth heating lines are connected in parallel.

15. The display panel according to claim 2, characterized in that, The display area includes a display area edge, which separates the display area from the non-display area; The first heating trace and the second heating trace are connected. On the plane where the display panel is located, the projection of the connection area of ​​the first heating trace and the second heating trace overlaps with the projection of the edge of the display area, and the line width of the heating trace in the connection area is smaller than the line width of the heating trace in other areas.

16. The display panel according to claim 1, characterized in that, The non-display area surrounds the display area, and / or the non-display area is located within the area where the display area is located.

17. The display panel according to claim 1, characterized in that, It also includes a gate metal layer, a source / drain metal layer, a pixel electrode layer, and a common electrode layer, wherein the heating trace is formed in any one or more of the gate metal layer, the source / drain metal layer, the pixel electrode layer, and the common electrode layer.

18. The display panel according to claim 1, characterized in that, The display panel further includes a first signal transmission line, at least a portion of which is located in the non-display area; On the plane where the display panel is located, the distance between the projection of the heating trace located in the non-display area and the projection of the first signal transmission line is greater than or equal to a preset distance threshold.

19. A display device, characterized in that, include: The display panel and backlight module according to any one of claims 1 to 18, wherein the backlight module is located on the side of the display panel opposite to the light emitting side.

Images