Display module and display device

Abstract

The application relates to a display module and a display device. The display module comprises a display panel and a polarizing layer. The display panel is divided into a display area and a non-display area outside the display area. The display panel comprises a substrate, a first wiring layer, an insulating layer, a second wiring layer and a protective layer which are sequentially stacked. The protective layer, the first wiring layer, the second wiring layer and the insulating layer are located in the non-display area. The insulating layer is provided with a via structure. The wires of the first wiring layer and the wires of the second wiring layer are electrically connected through the via structure. The polarizing layer is arranged on the side of the protective layer away from the substrate. The polarizing layer extends from the display area to the non-display area. The orthographic projection of the polarizing layer on the substrate and the orthographic projection of the protective layer on the substrate overlap. The display module can solve the problem that the signal lines are prone to break at the wire-changing holes.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display module and a display device. Background Technology

[0002] In display panels, relocation holes are typically placed in the non-display area to move signal lines from one routing layer to another. For display panels with narrow bezels, due to the narrow non-display area, when the display panel is bonded to the polarizer, the polarizer is usually extended into the non-display area to prevent light leakage. This makes it easy for ions released by the polarizer to diffuse to the relocation hole and cause corrosion, resulting in signal line breaks at the relocation hole. Summary of the Invention

[0003] Therefore, it is necessary to provide a display module and display device to address the problem that signal lines are prone to breakage at the cable replacement hole.

[0004] According to one aspect of this application, a display module is provided, comprising: a display panel having a display area and a non-display area located outside the display area, the display panel comprising a substrate, a first wiring layer, an insulating layer, a second wiring layer and a protective layer stacked sequentially, the protective layer, the first wiring layer, the second wiring layer and the insulating layer being located within the non-display area, the insulating layer having a via structure, and the wirings of the first wiring layer and the second wiring layer being electrically connected through the via structure; and a polarizing layer disposed on the side of the protective layer facing away from the substrate, the polarizing layer extending from the display area to the non-display area, the orthographic projection of the polarizing layer on the substrate and the orthographic projection of the protective layer on the substrate overlapping.

[0005] In some embodiments, the protective layer and the polarizing layer are flush with each other; or, a portion of the orthogonal projection of the protective layer onto the substrate falls outside the orthogonal projection of the polarizing layer onto the substrate.

[0006] In some embodiments, the orthographic projection of the protective layer on the substrate covers the orthographic projection of the via structure on the substrate; or, the orthographic projection of the protective layer on the substrate is located on the side of the orthographic projection of the via structure on the substrate closer to the display area and does not overlap with it.

[0007] In some embodiments, the display panel further includes a third wiring layer, at least a portion of which is located within the non-display area, and the protective layer is disposed on the same layer as the third wiring layer.

[0008] In some embodiments, an insulating gap is provided between the protective layer and the third wiring layer.

[0009] In some embodiments, the protective layer is electrically connected to the third wiring layer.

[0010] Optionally, along the direction from the display area to the non-display area, the orthographic projection of the third wiring layer on the substrate and the orthographic projection of the protective layer on the substrate are spaced apart.

[0011] Optionally, the third wiring layer and the protective layer are electrically connected in a direction that intersects the direction from the display area to the non-display area.

[0012] Optionally, a connecting trace is provided between the third wiring layer and the protective layer. The connecting trace extends in a direction that intersects the direction from the display area to the non-display area, and the opposite ends of the connecting trace are electrically connected to the protective layer and the third wiring layer, respectively.

[0013] In some embodiments, the protective layer is made of metal, and the metal activity of the protective layer is stronger than that of the third trace layer; or, the metal activity of the protective layer is the same as that of the third trace layer.

[0014] Optionally, the material of the protective layer is the same as the material of the third wiring layer.

[0015] In some embodiments, the non-display area includes a first area adjacent to one side of the display area along a first direction; within the first area, the first routing layer includes a first routing layer, the second routing layer includes a second routing layer, the via structure includes a first via structure, the protective layer includes a first protective portion, and the first routing layer and the second routing layer are electrically connected through the first via structure.

[0016] Optionally, the display panel includes a data line located in the display area, and the first trace is electrically connected to the data line.

[0017] In some embodiments, the non-display area further includes a second area adjacent to one side of the display area along a second direction, wherein the first direction and the second direction intersect; within the second area, the first routing layer includes a third routing layer, the second routing layer includes a fourth routing layer, the via structure includes a second via structure, the protective layer includes a second protective portion, and the third routing layer and the fourth routing layer are electrically connected through the second via structure.

[0018] According to another aspect of this application, a display device is provided, including a display module as described above.

[0019] The display panel provided in this application provides a protective layer located in the non-display area on the side of the display panel facing the polarizing layer. The protective layer is arranged so that its orthographic projection on the substrate overlaps with the orthographic projection of the polarizing layer on the substrate. This allows the protective layer to block the path of ions released by the polarizing layer toward the via structure. In this way, it can prevent or slow down the corrosion of the via structure by ions released by the polarizing layer, thereby solving the problem that signal lines are prone to breakage at the via structure. Attached Figure Description

[0020] Figure 1 A schematic diagram of the stacked structure of a display module in one embodiment of this application is shown;

[0021] Figure 2 A partial structural schematic diagram of a display module in one embodiment of this application is shown;

[0022] Figures 3-5 This application also shows a schematic diagram of the stacked structure of the display module in some other embodiments;

[0023] Figure 6 A partially unfolded schematic diagram of a display module according to an embodiment of this application is shown;

[0024] Figure 7 It shows Figure 6 The image shows a magnified view of a portion of the unfolded diagram of the display module.

[0025] Figure 8 A partially unfolded schematic diagram of the display module in another embodiment of this application is shown;

[0026] Figure 9 A partially unfolded schematic diagram of the display module in another embodiment of this application is shown;

[0027] Figure 10 It shows Figure 9 The image shows a magnified detail of a portion of the module's unfolded view.

[0028] Explanation of icon numbers:

[0029] 10. Display panel; 11. Array substrate; AA, display area; NAA, non-display area; NAA1, fan-out area; NAA2, bonding area; 10a, via structure; 10a1, first via structure; 10a2, second via structure;

[0030] 20. Touch layer;

[0031] 30. Polarizing layer;

[0032] 40. Protective layer;

[0033] 51. Data cable; 511. First trace; 512. Second trace;

[0034] 52. Drive circuit routing;

[0035] 53. Third wiring layer;

[0036] 54. Connect and route the cables;

[0037] 60. Control chip. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] The display panel includes a display area and a non-display area surrounding the display area. The non-display area has a complex structure. For example, the packaging boundaries and edge traces of the display panel are concentrated in the non-display area. Furthermore, transponder holes are provided in the non-display area to allow edge traces to be switched between different trace layers.

[0045] As consumers increasingly demand higher screen-to-body ratios, the non-display area is becoming narrower, and the distance between the cable replacement hole and the display area is also shortening. Furthermore, due to the narrower non-display area, during the bonding process between the display panel and the polarizer, to prevent light leakage, part of the polarizer is extended into the non-display area, which further shortens the distance between the polarizer and the cable replacement hole.

[0046] In high temperature and high humidity environments, or when affected by other external forces, the polarizer will release potassium ions and iodine ions. Water vapor, potassium ions, and iodine ions can easily diffuse along the gap between the polarizer and the edge trace to the line switching hole, causing the conductive metal in the line switching hole to be corroded, resulting in signal line breakage and causing poor bright lines on the screen.

[0047] For example, in related technologies, the data signal line located between the display area and the fan-out area is made of aluminum (Al). Due to the chemical reactivity of aluminum, titanium (Ti) is usually chosen as a protective layer for the aluminum, forming a titanium-aluminum-titanium (Ti-Al-Ti) film structure. When a switch hole is provided, the aluminum in the middle is exposed. The potassium ions and iodine ions released by the polarizer, together with water vapor, easily corrode the aluminum, causing a signal break at the switch hole.

[0048] To address the aforementioned issues, this application provides a display module that adds a protective layer, such as a metal protective layer, to the side of the display panel facing the polarizer. This protective layer forms a barrier in the path of ions released by the polarizer. When the protective layer is a metal protective layer, it can also react with the ions released by the polarizer before they approach the switching hole, thereby preventing the ions released by the polarizer from directly entering the switching hole and thus protecting the switching hole.

[0049] Figure 1 A schematic diagram of the stacked structure of a display module in one embodiment of this application is shown. Figure 2 A partial structural schematic diagram of a display module in one embodiment of this application is shown.

[0050] See Figure 1 and Figure 2 An embodiment of this application provides a display module including a display panel 10 and a polarizing layer 30. The display panel 10 is divided into a display area AA and a non-display area NAA located outside the display area AA. The display panel 10 includes a substrate, a plurality of wiring layers, an insulating layer, and a protective layer 40. The plurality of wiring layers are stacked on the substrate. One or more insulating layers are provided, each insulating layer is provided between two adjacent wiring layers, and the protective layer 40 is provided on the side of at least one wiring layer facing away from the substrate.

[0051] For example, the display panel includes a substrate, a first wiring layer, an insulating layer, a second wiring layer, and a protective layer 40 stacked sequentially. The protective layer 40, the first wiring layer, the second wiring layer, and the insulating layer are located within the non-display area NAA. The insulating layer has a via structure 10a, through which the wirings of the first wiring layer and the second wiring layer are electrically connected. A polarizing layer 30 is disposed on the side of the protective layer 40 opposite to the plurality of wiring layers, and the polarizing layer 30 extends from the display area AA to the non-display area NAA. The orthographic projection of the protective layer 40 on the substrate overlaps with the orthographic projection of the polarizing layer 30 on the substrate. Based on this, the protective layer 40 can block the ions released by the polarizing layer 30 from moving toward the via structure 10a, thereby preventing or slowing down the corrosion of the via structure 10a by the ions released by the polarizing layer 30, thus solving the problem that signal lines are prone to breakage at the via structure 10a.

[0052] It should be noted that when the orthographic projection of the polarizing layer 30 on the substrate does not overlap with the orthographic projection of the via structure 10a on the substrate, the movement path of the ions released by the polarizing layer 30 from the initial release to entering the via structure 10a includes one component along the thickness direction of the display panel 10 and another component along the width direction of the non-display area NAA. In this application, a protective layer 40 is disposed between the polarizing layer 30 and the display panel 10, and the orthographic projection of the protective layer 40 on the substrate overlaps at least with the orthographic projection of the polarizing layer 30 on the substrate, achieving blocking in at least one of these two directions, thereby preventing the ions released by the polarizing layer 30 from entering the via structure 10a, or reducing the number of ions entering the via structure 10a.

[0053] The protective layer 40 is disposed on the side of at least one wiring layer away from the substrate, including the protective layer 40 disposed on the side of one of the wiring layers away from the substrate and the protective layer 40 disposed on the side of multiple wiring layers away from the substrate. That is, the protective layer 40 can be one or more layers. For example, when multiple spaced via structures 10a are provided along the stacking direction of multiple wiring layers, that is, when multiple via structures 10a located at different heights are provided along the thickness direction of the display panel 10, a protective layer 40 can be disposed on the side of any via structure 10a away from the substrate to protect each via structure 10a individually; or, a protective layer 40 can be disposed on the side of the wiring layer farthest from the substrate away from the substrate to protect multiple via structures 10a simultaneously.

[0054] See Figure 1 and Figure 3 , Figure 3 A schematic diagram of the stacked structure of a display module according to another embodiment of this application is shown. Optionally, along the extension direction from the display area AA to the non-display area NAA, the outer edge of the orthogonal projection of the protective layer 40 onto the substrate is at least flush with the outer edge of the orthogonal projection of the polarizing layer 30 onto the substrate, that is, the sides of the protective layer 40 and the polarizing layer 30 are flush, or a portion of the orthogonal projection of the protective layer 40 onto the substrate falls outside the orthogonal projection of the polarizing layer 30 onto the substrate. In this way, the protective layer 40 can block the ions released by the polarizing layer 30 from moving toward the via structure 10a, thereby preventing or slowing down the corrosion of the via structure 10a by the ions released by the polarizing layer 30.

[0055] See Figure 4 In one exemplary embodiment, the orthogonal projection of the protective layer 40 onto the substrate covers the orthogonal projection of the via structure 10a onto the substrate. Thus, the protective layer 40 provides a barrier at least in the thickness direction of the display panel 10. See also... Figure 5In another exemplary embodiment, the orthographic projection of the protective layer 40 onto the substrate is located on the side of the orthographic projection of the via structure 10a onto the substrate closer to the display area AA, and the orthographic projection of the protective layer 40 onto the substrate does not overlap with the orthographic projection of the via structure 10a onto the substrate. Thus, the protective layer 40 provides obstruction in the width direction of the non-display area NAA. Specifically, when the orthographic projection of the protective layer 40 onto the substrate does not overlap with the orthographic projection of the via structure 10a onto the substrate, the protective layer 40 avoids the via structure 10a, thus better preventing the via structure 10a from being compressed and cracked.

[0056] When the protective layer 40 does not react with the ions released from the polarizing layer 30, the ions cannot pass through the protective layer 40 and must bypass it, moving along its surface to the via structure 10a instead of directly entering it. This prolongs the ion's path, and some ions remain on the protective layer 40 during this movement. When the protective layer 40 includes a material capable of reacting with the ions, some or all of the ions will be consumed before entering the via structure 10a. Therefore, the number of ions ultimately entering the via structure 10a decreases regardless of whether the protective layer 40 reacts with or does not.

[0057] Based on this, a material capable of reacting with the ions is further provided in the protective layer 40, which can partially or completely consume the ions released by the polarizing layer 30, thereby protecting the via structure 10a.

[0058] See Figure 2 In some embodiments, the display panel 10 further includes a third wiring layer 53, at least a portion of which is located within the non-display area NAA, and the protective layer 40 is disposed on the same layer as the third wiring layer 53. Thus, while protecting the via structure 10a, the thickness of the display module can be reduced.

[0059] See Figure 6 and Figure 7 , Figure 6 This illustration shows a partially unfolded schematic diagram of a display module according to one embodiment of the present application. Figure 7 It shows Figure 6 The image shows a detailed enlarged view of a portion of the unfolded module. In an optional embodiment, an insulating gap is provided between the protective layer 40 and the third routing layer 53. This ensures that while the protective layer 40 protects the via structure 10a, it also prevents the metal layer from affecting the third routing layer.

[0060] See Figure 8 , Figure 8A partially unfolded schematic diagram of the display module is shown in another embodiment of this application. In another optional embodiment, the protective layer 40 is electrically connected to the third wiring layer 53. Thus, while providing protection for the via structure 10a, the protective layer 40 also provides an electrostatic discharge effect.

[0061] Optionally, the orthographic projection of the third wiring layer 53 on the substrate and the orthographic projection of the protective layer 40 on the substrate are spaced apart along the direction from the display area AA to the non-display area NAA. That is, the third wiring layer 53 and the protective layer 40 are spaced apart along the extension direction from the display area AA to the non-display area NAA. In this way, ions released from the polarizing layer 30 can be prevented from entering the via structure 10a through the third wiring layer 53 and the protective layer 40.

[0062] Optionally, the third wiring layer 53 and the protective layer 40 are electrically connected in a direction intersecting the direction from the display area AA to the non-display area NAA. For example, a connecting trace 54 is provided between the third wiring layer 53 and the protective layer 40. The connecting trace 54 extends in a direction intersecting the direction from the display area AA to the non-display area NAA, and its opposite ends are electrically connected to the protective layer 40 and the third wiring layer 53, respectively. For instance, the third wiring layer has a U-shape or arch shape in the coverage area of ​​the non-display area NAA, and the protective layer 40 is located within the hollow area of ​​the U-shape or arch structure. The connecting trace 54 extends in a left-right, up-down, or inclined direction, and electrically connects the protective layer 40 and the third wiring layer 53.

[0063] In some embodiments, the protective layer 40 is made of metal. Optionally, the metal material of the protective layer 40 has stronger metal activity than the metal activity of the third wiring layer 53, or the metal material of the protective layer 40 has the same metal activity as the third wiring layer 53. In this way, the protective layer 40 can preferentially react with the ions released by the polarizing layer 30, partially or completely consuming the ions released by the polarizing layer 30, thereby achieving good protection for the via structure 10a.

[0064] Optionally, the protective layer 40 can be made of the same material as the signal lines of the third trace layer 53. This makes the design of the protective layer 40 more convenient, as it can both fully dissipate the ions released by the polarizing layer 30 and simplify the manufacturing process of the display module.

[0065] Optionally, the protective layer 40 and the third wiring layer 53 are formed using the same film pattern. For example, the third wiring layer 53 includes power lines, and the protective layer 40 is formed simultaneously during the process of forming the power lines. This simplifies the manufacturing process of the display panel 10 and reduces costs.

[0066] See Figure 1Optionally, the display panel 10 includes an array substrate 11, a touch layer 20 is provided on the light-emitting side of the array substrate 11, a polarizing layer 30 is provided on the side of the touch layer 20 away from the array substrate 11, and a protective layer 40 is provided on the same layer as the touch layer 20, thereby reducing the thickness of the display module.

[0067] See Figure 2 Optionally, the non-display area NAA surrounds the display area AA. For example, the display area AA is rectangular, and the non-display area NAA surrounds the rectangular display area AA. Based on this, the non-display area NAA has two sub-regions opposite each other along the length direction of the display area AA and two sub-regions opposite each other along the width direction of the display area AA.

[0068] In some embodiments, the non-display area NAA includes a first area adjacent to one side of the display area AA along a first direction. See also Figure 2 and Figure 7 For example, when the display area AA is rectangular, the first direction is perpendicular to the width direction of the display area AA and parallel to the length direction of the display area AA. Within the first area, the first routing layer includes a first routing line 511, the second routing layer includes a second routing line 512, the via structure 10a includes a first via structure 10a1, and the protective layer 40 includes a first protective portion. The first routing line 511 and the second routing line 512 are electrically connected through the first via structure 10a1. Thus, the first via structure 10a1 can be protected by the first protective portion.

[0069] Continue reading Figure 1 , Figure 2 and Figure 7 Optionally, the display panel 10 includes data lines 51 located in the display area AA, and a first trace 511 is electrically connected to the data lines 51. Exemplarily, the display panel 10 includes an array of pixel units and multiple data lines 51 for providing data signals to the pixel units. Each data line 51 extends along a first direction within the display area AA, and the multiple data lines 51 are spaced apart along a second direction intersecting the first direction. The non-display area NAA includes a first region adjacent to one side of the display area AA along the first direction. Within the first region, a first trace layer includes the first trace 511, a second trace layer includes the second trace 512, a via structure 10a includes a first via structure 10a1, the first trace 511 and the second trace 512 are electrically connected through the first via structure 10a1, and the protective layer 40 includes a first protective portion disposed at a position corresponding to the first via structure 10a1. One end of the first trace 511 is electrically connected to the data line 51, and the other end is switched through the first via structure 10a1 and electrically connected to the second trace 512. Based on this, the first via structure 10a1 enables the first trace 511 to be switched between different trace layers, so that the data signal of the data line 51 can be transmitted sequentially through the first trace 511 and the second trace 512.

[0070] See Figure 2 For example, the non-display area NAA includes an adjacent fan-out area NAA1 and a bonding area NAA2. A first trace is located in the fan-out area NAA1 and a first trace is located in the bonding area NAA2. The end of the first trace away from the first trace is connected to the control chip 60.

[0071] See Figure 2 and Figure 7 Optionally, the non-display area NAA also includes a second area adjacent to one side of the display area AA along the second direction, where the first and second directions intersect. Within the second area, the first routing layer includes a third routing trace, the second routing layer includes a fourth routing trace (not shown in the figure), the via structure 10a includes a second via structure 10a2, the protective layer 40 includes a second protective portion, and the third and fourth routing traces are electrically connected through the second via structure 10a2.

[0072] For example, the display panel 10 includes an array of pixel units, multiple data lines 51 for providing data signals to the pixel units, and multiple scan lines for providing scan signals to the pixel units. Each data line 51 extends in a first direction within the display area AA, and the multiple data lines 51 are spaced apart along a second direction intersecting the first direction; each scan line extends in the second direction, and the multiple scan lines are spaced apart along the first direction. The display panel 10 also includes a driving circuit trace 52 located in the non-display area NAA. The driving circuit trace 52 is electrically connected to the scan lines. One end of a third trace is electrically connected to the driving circuit trace 52, and the other end is switched through a second via structure 10a2 and electrically connected to a fourth trace. The non-display area NAA includes a second area adjacent to the display area AA along a second direction. Within the second area, the first routing layer includes a third trace, the second routing layer includes a fourth signal line, and the via structure 10a includes a second via structure 10a2. The third trace and the fourth trace are electrically connected through the second via structure 10a2. The protective layer 40 includes a second protective portion disposed at a position corresponding to the second via structure 10a2. Based on this, the second via structure 10a2 enables the switching of the third trace between different routing layers, allowing the drive scan signal of the drive circuit trace 52 to be transmitted sequentially through the third trace and the fourth trace.

[0073] It should be noted that the protective layer 40 may exist at both the first via structure 10a1 and the second via structure 10a2, or the protective layer 40 may be provided at only one of the first via structure 10a1 and the second via structure 10a2.

[0074] Optionally, the fourth trace is arranged on the same layer as the second trace, and the drive circuit trace 52 is arranged on the same layer as the data line 51 to reduce the thickness of the display module.

[0075] See Figure 2 Optionally, both the first via structure 10a1 and the second via structure 10a2 are located in the fan-out area NAA1, and multiple second via structures 10a2 are distributed in two sub-switching areas, which are located on opposite sides of the area where the first via structure 10a1 is located. Thus, the connection path between the data line 51 in the display area AA and the first trace 511 and the second trace 512 is shorter, and the connection path between the drive circuit trace 52 in the non-display area NAA and the third trace and the fourth trace is also shorter. Furthermore, since the second via structure 10a2 is far from the power line coverage area of ​​the third trace layer 53, in an optional embodiment, a metal protective layer 40 is provided at the position corresponding to the second via structure 10a2, and the metal protective layer 40 is provided with an insulating gap from the third trace layer 53.

[0076] Optionally, the non-display area NAA is provided with multiple first sub-switching areas and multiple second sub-switching areas. Each first sub-switching area is provided with a first via structure 10a1, and each second sub-switching area is provided with a second via structure 10a2. The protective layer 40 includes multiple first protective parts corresponding to the multiple first sub-switching areas and multiple second protective parts corresponding to the multiple second sub-switching areas. Some of the first protective parts and some of the second protective parts are integrally formed.

[0077] For example, see Figure 9 and Figure 10 , Figure 9 A partially unfolded schematic diagram of the display module according to another embodiment of this application is shown. Figure 10 It shows Figure 9 A detailed enlarged view of a partial unfolded diagram of the display module. The display panel 10 has mutually perpendicular width and length directions. In the display area AA, multiple data lines 51 are spaced apart along the width direction of the display panel 10 (see...). Figure 2Multiple data lines 51 extend along the length of the display panel 10 and are electrically connected to the first trace 511. Correspondingly, the first via structure 10a1 includes five spaced-apart first sub-swapping areas for switching the first trace 511. In the non-display area NAA, several driving circuit traces 52 are provided on each side of the width direction of the display area AA. The driving circuit traces 52 extend along the length of the display panel 10 and are electrically connected to the third trace. Correspondingly, the second via structure 10a2 includes two second sub-swapping areas for switching the third trace, and the two second sub-swapping areas are located outside the five first sub-swapping areas. The first protective part corresponding to one first sub-swapping area and the second protective part corresponding to one adjacent second sub-swapping area are integrally formed. In this way, the formation process of the protective layer 40 can be simplified, and the gap between some adjacent protective areas can be eliminated, thereby improving the protection effect.

[0078] Furthermore, the length, width, and thickness of the protective layer 40 can be adjusted according to the distribution range of the via structure 10a. Optionally, the length of the protective layer 40 along the length extension direction of the lower frame is 40mm to 50mm. For example, the length of the protective layer 40 is 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, or 49mm. Optionally, the thickness of the protective layer 40 is... For example, the thickness of the protective layer 40 is

[0079] For the same purpose, this application also provides a display device, which includes the display module in the above embodiments.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display module, characterized in that, include: The display panel is divided into a display area and a non-display area located outside the display area. The display panel includes a substrate, a first wiring layer, an insulating layer, a second wiring layer and a protective layer stacked in sequence. The protective layer, the first wiring layer, the second wiring layer and the insulating layer are located in the non-display area. The insulating layer is provided with a via structure, which is used for electrical connection between the wiring of the first wiring layer and the wiring of the second wiring layer. and, A polarizing layer is disposed on the side of the protective layer opposite to the substrate, and the polarizing layer extends from the display area to the non-display area, wherein the orthographic projection of the polarizing layer on the substrate and the orthographic projection of the protective layer on the substrate overlap. The orthographic projection of the protective layer on the substrate is located on the side of the orthographic projection of the via structure on the substrate closer to the display area, and they do not overlap, so that the protective layer avoids the via structure and prevents the via structure from being squeezed and cracked. The protective layer has multiple layers and is respectively located on the side of the multiple trace layers away from the substrate, so as to protect each via structure individually. The protective layer is made of metal and is configured to react with the ions released from the polarizing layer before they approach the via structure. The display panel further includes a third wiring layer, at least a portion of which is located within the non-display area. The protective layer is disposed on the same layer as the third wiring layer and is formed by patterning the same film layer. The metal activity of the protective layer is stronger than or equal to that of the third wiring layer. The protective layer and the third wiring layer are either insulated from each other or electrically connected. When the protective layer and the third wiring layer are electrically connected, the protective layer is also used to discharge static electricity from the via structure.

2. The display module according to claim 1, characterized in that, The protective layer and the polarizing layer have their sides flush; or... A portion of the orthogonal projection of the protective layer onto the substrate falls outside the orthogonal projection of the polarizing layer onto the substrate.

3. The display module according to claim 1, characterized in that, Along the direction from the display area to the non-display area, the orthographic projection of the third wiring layer on the substrate and the orthographic projection of the protective layer on the substrate are spaced apart.

4. The display module according to claim 1, characterized in that, The third wiring layer and the protective layer are electrically connected in a direction that intersects the direction from the display area to the non-display area.

5. The display module according to claim 1, characterized in that, A connecting trace is provided between the third wiring layer and the protective layer. The connecting trace extends in a direction that intersects the direction from the display area to the non-display area, and the opposite ends of the connecting trace are electrically connected to the protective layer and the third wiring layer, respectively.

6. The display module according to claim 1, characterized in that, The protective layer is made of the same material as the third wiring layer.

7. The display module according to any one of claims 1-3, characterized in that, The non-display area includes a first area adjacent to one side of the display area along a first direction; Within the first region, the first routing layer includes a first routing trace, the second routing layer includes a second routing trace, the via structure includes a first via structure, the protective layer includes a first protective portion, and the first routing trace and the second routing trace are electrically connected through the first via structure.

8. The display module according to claim 7, characterized in that, The display panel includes a data line located in the display area, and the first trace is electrically connected to the data line.

9. The display module according to claim 7, characterized in that, The non-display area further includes a second area adjacent to one side of the display area along a second direction, wherein the first direction and the second direction intersect; Within the second region, the first routing layer includes a third routing layer, the second routing layer includes a fourth routing layer, the via structure includes a second via structure, the protective layer includes a second protective portion, and the third routing layer and the fourth routing layer are electrically connected through the second via structure.

10. A display device, characterized in that, Includes the display module as described in any one of claims 1-9.

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