Display module, manufacturing method and display device

Abstract

The invention discloses a display module, a manufacturing method and a display device. The display module of one embodiment comprises: a display panel comprising a display area and a hole area located in the display area; the cover plate is positioned on the light emitting side of the display panel; the conductive ink layer is located on the surface of the side, close to the display panel, of the cover plate and arranged on the edge of the end of the cover plate, and the orthographic projection of the conductive ink layer on the display panel surrounds the display area; the patterned charge conduction layer is located on the surface of the side, close to the display panel, of the cover plate, the orthographic projection of the charge conduction layer on the display panel surrounds the orthographic projection of the hole area on the display panel, and the orthographic projection of the charge conduction layer and the orthographic projection of the conductive ink layer at least partially overlap.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a display module, a manufacturing method and a display device. Background Art

[0002] In the current application of touch panels, for mobile phone OLED (electroluminescent diode display) modules under specific test conditions, that is, when the screen is facing down and close to a metal conductor, such as various metal desktops, the "ghost hand reporting" problem frequently occurs around the display area hole area (AAHole area, commonly used for sensor areas such as cameras). Summary of the invention

[0003] An object of the present invention is to provide a display module, a manufacturing method and a display device to solve at least one of the problems existing in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A first aspect of the present invention provides a display module, the display module comprising:

[0006] A display panel, comprising a display area and a hole area located in the display area;

[0007] a cover plate located at the light-emitting side of the display panel;

[0008] A conductive ink layer located on a surface of the cover plate close to the display panel, disposed at an end edge of the cover plate, wherein an orthographic projection of the conductive ink layer on the display panel surrounds the display area;

[0009] A patterned charge conduction layer is located on the surface of the cover plate on one side close to the display panel, the orthographic projection of the charge conduction layer on the display panel surrounds the orthographic projection of the hole area on the display panel, and the orthographic projection of the charge conduction layer and the orthographic projection of the conductive ink layer have at least partially overlapping projections.

[0010] In an optional embodiment, the charge conduction layer includes a plurality of patterned conduction traces, wherein the conduction traces divide the orthographic projection of the charge conduction layer on the display panel into a plurality of sub-projection areas, at least one sub-projection area surrounds the orthographic projection of the hole area on the display panel,

[0011] The conductive traces include:

[0012] A conductive part with an opening, wherein the orthographic projection of the conductive part on the display panel and the orthographic projection of the conductive ink layer on the display panel form a ring structure; and an overlapping part connected to the two ends of the conductive part, wherein the overlapping part extends from the display area to the end of the display panel to the conductive ink layer.

[0013] In an optional embodiment, the conductive ink layer includes a first ink edge portion close to one side of the hole area,

[0014] The conducting part comprises:

[0015] a first wiring portion, wherein a first end of the first wiring portion forms a first angle with the first ink edge;

[0016] a second wiring portion, wherein a first end of the second wiring portion forms a second angle with the first ink edge;

[0017] The second end of the first routing portion is connected to the second end of the second routing portion, and the first routing portion and the second routing portion together form an opening facing the first ink edge portion.

[0018] In an optional embodiment, the second end of the first routing portion and the second end of the second routing portion are connected through a third routing portion, and the first routing portion, the second routing portion and the third routing portion form an opening toward the first ink edge.

[0019] In an optional embodiment, the arrangement direction of the plurality of conductive traces is the same as the extension direction of the first ink edge.

[0020] Of the two adjacent conductive traces, a first trace portion of one conductive trace and a second trace portion of the other conductive trace share a same trace portion.

[0021] In an optional embodiment, the first routing portion includes a plurality of first straight line portions, and the bending angle between adjacent first straight line portions is 115° to 175°;

[0022] The second routing portion includes a plurality of second straight line portions, and the bending angle between adjacent second straight line portions is 115° to 175°;

[0023] The third routing portion includes a plurality of third straight line portions, and a bending angle between adjacent third straight line portions is 115° to 175°.

[0024] In an optional embodiment, one or more locations between adjacent first straight line portions, adjacent second straight line portions and adjacent third straight line portions are arc-shaped structures, and a central angle of the arc-shaped structure is 15° to 90°.

[0025] In an optional embodiment, the sub-projection areas are arranged and spaced apart along the extension direction of the first ink edge, and the sub-projection areas are located at one or more of the positions of the cover plate corresponding to the end of the first ink edge and the positions of the cover plate corresponding to the hole area.

[0026] In an optional embodiment, the conductive ink layer further includes a second ink edge portion located in the non-porous area.

[0027] The orthographic projection of the charge conduction layer on the cover plate is located in the cover plate at a position corresponding to the second ink edge, and has at least a partially overlapping projection with the orthographic projection of the second ink edge on the cover plate; or

[0028] The sub-projection areas are arranged along the extension direction of the second ink edge and are spaced apart.

[0029] In an optional embodiment, the display module further includes:

[0030] A frame, the frame comprising a bottom plate and a side frame, and the display panel is located on the bottom plate of the frame;

[0031] a first adhesive layer located between the display panel and the cover plate, the first adhesive layer covering the conductive portion and a surface of the cover plate of the display area close to the display panel;

[0032] A second adhesive layer is located between the side frame and the conductive ink layer, and the thickness of the second adhesive layer is greater than the thickness of the charge conduction layer.

[0033] A second aspect of the present invention provides a display device, comprising the display module described in the first aspect of the present invention.

[0034] A third aspect of the present invention provides a method for manufacturing the display module of the first aspect of the present invention, the method comprising:

[0035] forming a conductive ink layer surrounding the display area at the end edge of the first surface of the cover plate;

[0036] forming a charge conduction layer on the first surface and on a surface of the conductive ink layer away from the first surface, wherein the orthographic projection of the charge conduction layer on the display panel covers the orthographic projection of the hole area on the display panel, and the orthographic projection of the charge conduction layer and the orthographic projection of the conductive ink layer have at least partially overlapping projections;

[0037] The cover plate having the charge conduction layer is fixed to the light emitting surface of the display panel.

[0038] The beneficial effects of the present invention are as follows:

[0039] The display module of the embodiment of the present invention has a charge conduction layer disposed at the edge of the cover plate corresponding to the hole area, and the charge conduction layer and the conductive ink layer are overlapped to achieve effective release of the electrostatic charge in the hole area. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0041] Figure 1 A schematic diagram showing a top view of a display module according to an embodiment of the present invention;

[0042] Figure 2 Show Figure 1 A schematic diagram of the layer structure of the display module of the illustrated embodiment;

[0043] Figure 3 Schematic diagrams showing the distribution of charge conduction layers in different embodiments;

[0044] Figure 4 Schematic diagrams showing the distribution of charge conduction layers in different embodiments;

[0045] Figure 5 Schematic diagrams showing the layer structure of a display module at different positions;

[0046] Figure 6 to Figure 8 Schematic diagrams showing the shapes of charge conduction layers in different embodiments;

[0047] Fig. 9 A schematic diagram showing charge distribution of a display module in the related art. DETAILED DESCRIPTION

[0048] In order to explain the present invention more clearly, the present invention is further described below in conjunction with embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and the protection scope of the present invention should not be limited thereto.

[0049] In the current application of touch panels, for mobile phone OLED (electroluminescent diode display) modules, under specific test environments, for example, when the screen is facing down and close to a metal conductor, such as various metal desktops, the "ghost hand reporting" problem frequently occurs around the display area hole area (AAHole area, commonly used for sensor areas such as cameras).

[0050] The inventor has found through a lot of experiments and research that Fig. 9 As shown, Fig. 9 Figure 9a shows that the signal residues are concentrated around the hole area. Fig. 9 Figure 9b shows a 3D schematic diagram of the residual signal. Fig. 9 Figure 9c shows a schematic diagram of the residual signal measurement results. Therefore, the inventors propose that the reasons for the "ghost hand reporting" phenomenon are: due to the structural design or material characteristics of the AAHole area, charge accumulates under certain conditions (such as after contact with metal), and the charge accumulation is not easy to dissipate naturally. Since the residual charge signal will interfere with the touch signal, the ghost hand reporting phenomenon will appear near the AAHole of the screen.

[0051] In view of this, the present invention provides a display module, a manufacturing method and a display device to solve one or more of the above problems.

[0052] The first embodiment of the present invention provides a display module, such as Figures 1 to 8 As shown, the display module includes:

[0053] The display panel 10 includes a display area AA and a hole area Hole located in the display area AA;

[0054] A cover plate 20 located at the light emitting side of the display panel 10;

[0055] The conductive ink layer 30 is located on the surface of the cover plate 20 on one side close to the display panel 10 and is disposed at the end edge of the cover plate 20 . The orthographic projection of the conductive ink layer 30 on the display panel 10 surrounds the display area AA.

[0056] A patterned charge conduction layer 40 is located on the surface of the cover plate 20 on one side close to the display panel 10, and the orthographic projection of the charge conduction layer 40 on the display panel 10 surrounds the orthographic projection of the hole area Hole on the display panel 10, and the orthographic projection of the charge conduction layer 40 and the conductive ink layer 30 have at least partially overlapping projections.

[0057] The display module of the embodiment of the present invention has a charge conduction layer 40 disposed at the edge of the cover plate 20 corresponding to the hole area. The charge conduction layer 40 and the conductive ink layer 30 are overlapped to achieve effective release of the electrostatic charge in the AAhole area.

[0058] In an optional embodiment, the charge conduction layer 40 is a transparent conductive material, such as an ITO material. By utilizing the conductivity and high transparency of the transparent conductive material, the accumulated charges can be directed to the edge area of ​​the display module while ensuring that there is no impact on the screen display effect, thereby improving the ghost hand reporting phenomenon.

[0059] In an optional embodiment, if Figure 1 and Figure 2 As shown, the display module also includes:

[0060] A frame 50, wherein the frame 50 includes a bottom plate and a side frame, and the display panel 10 is located on the bottom plate of the frame 50. In this embodiment, the frame 50 is conductive, for example, the frame 50 is made of a conductive material;

[0061] a first adhesive layer 61 located between the display panel 10 and the cover plate 20, the first adhesive layer 61 covers the surface of the cover plate 20 on the side of the conductive portion and the display area AA close to the display panel 10, and the cover plate 20 and the display panel 10 are bonded together by the first adhesive layer 61;

[0062] The second adhesive layer 62 is located between the side frame and the conductive ink layer 30 , and the frame 50 and the cover plate 20 are bonded together by the second adhesive layer 62 .

[0063] Based on the above design, after the charge is conducted to the overlapping conductive ink layer 30 through the charge conduction layer 40 , it can be further conducted to the frame 50 of the display module, thereby unloading the residual charge and reducing the impact of static electricity on touch performance.

[0064] In an optional embodiment, if Figure 3 As shown, the thickness of the second adhesive layer 62 is greater than the thickness of the charge conduction layer 40 .

[0065] In this embodiment, in order to ensure that there is no large film layer discontinuity when the charge conduction layer 40 and the conductive ink layer 30 are overlapped, thereby causing abnormal fitting between the cover plate 20 and the frame 50, such as bubbles or convex marks, the embodiment of the present invention limits the thickness T2 of the second adhesive layer 62 to be much larger than the thickness T1 of the charge conduction layer 40. For example, 200μm≤T2≤300μm, 10μm≤T1≤50μm.

[0066] In an optional embodiment, if Figure 3 As shown in FIG. 3a , the length of the orthographic projection of the charge conduction layer 40 on the display panel 10 along the extending direction of the first ink edge 31 is the same as the length of the first ink edge 31 . Figure 3 As shown in FIG. 3 a , the charge conduction layer 40 is designed in a strip shape, which covers the entire strip area of ​​the display area AA where the hole area Hole is located.

[0067] In an optional embodiment, if Figure 3 As shown in 3a in FIG. 3 , the distance between the boundary of the charge conduction layer 40 near the center of the display area AA and the edge of the first ink edge 31 away from the center is the first width D 1 The distance between the boundary of the hole area Hole near the center of the display area AA and the edge of the first ink edge 31 away from the center is the second width D 2 , that is, the distance between the bottom boundary of the hole area Hole and the top boundary of the cover plate 20 is the second width. In this embodiment, the first width D 1 Greater than or equal to the second width D 2, ensuring that the charge conduction layer 40 covers the hole area Hole in a direction perpendicular to the first ink edge 31 .

[0068] In an optional embodiment, if Figure 3 As shown in 3b, the charge conduction layer 40 has a first length W along the extending direction of the first ink edge 31, which is the orthographic projection of the display panel 10. 1 Less than the third length W of the first ink edge 31 3 , and is greater than or equal to the second length W of the hole area Hole along the extending direction of the first ink edge 31 2 .

[0069] like Figure 3 As shown in FIG. 3b, the charge conduction layer 40 of this embodiment only covers the hole area Hole in the distribution area of ​​the orthographic projection of the display panel 10, and does not cover the edge area of ​​the entire display area AA. In this solution, the first length W of the patterned charge conduction layer 40 is limited. 1 Greater than or equal to the second length W of the hole area 2 , ensuring that the charge conduction layer 40 covers the hole area Hole in the extension direction of the first ink edge 31.

[0070] Therefore, based on Figure 3 As can be seen from 3a to 3b, the orthographic projection of the charge conduction layer 40 on the display panel 10 covers the orthographic projection of the hole area Hole on the display panel 10, that is, this embodiment also satisfies the first length W of the charge conduction layer 40 1 Greater than or equal to the second length W of the hole area 2 , and the first width D 1 Greater than or equal to the second width D 2 design requirements to improve the charge residue in the entire hole area.

[0071] In an optional embodiment, in the embodiment of the present invention, if Figure 1 and Figure 3 As shown, the charge conduction layer 40 includes a plurality of patterned conduction traces 41 , and the conduction traces 41 divide the orthographic projection of the charge conduction layer 40 on the display panel 10 into a plurality of sub-projection areas, at least one of which surrounds the orthographic projection of the hole area Hole on the cover plate 20 .

[0072] The areas of the sub-projection areas described in this embodiment may be the same or different, or in other words, a sub-projection area may include one or more conductive traces 41. This configuration can adapt to the end profile design of the display panel 10, for example Figure 3 The curved edge shown in 3c.

[0073] like Figure 3As shown in 3c in FIG. 3, the sub-projection areas are arranged along the extension direction of the first ink edge 31 and are arranged at intervals. The orthographic projection of the charge conduction layer 40 of this embodiment on the display panel 10 is a segmented distribution scheme, such as Figure 3 The charge conduction layer 40 shown in 3c is distributed in three sections.

[0074] Further, the sub-projection area is located at one or more of the position of the cover plate 20 corresponding to the end of the first ink edge 31 and the position of the cover plate 20 corresponding to the hole area Hole. For example, Figure 3 As shown in FIG. 3 c , the charge conduction layer 40 of this embodiment is disposed at both side ends of the display area AA and the hole area Hole.

[0075] It is worth noting that the projection blocks of the charge conduction layer 40 of the embodiment of the present invention can be distributed in more segments, such as four segments, five segments... and other different embodiments. By continuously and efficiently exporting the residual charge at the edge of the display area AA where the hole area Hole is located, the risk of static electricity accumulation is effectively reduced, and the environmental adaptability and stability of the product are improved.

[0076] In an optional embodiment, if Figure 4 As shown, the conductive ink layer 30 also includes a second ink edge 32 located in the non-hole area. For example, the second ink edge 32 includes a bottom edge arranged opposite to the first ink edge 31 and vertical edges located opposite to each other on both sides of the cover plate 20 .

[0077] In this embodiment, the orthographic projection of the charge conduction layer 40 on the cover plate 20 is located in the cover plate 20 at a position corresponding to the second ink edge 32 , and has at least a partially overlapping projection with the orthographic projection of the second ink edge 32 on the cover plate 20 .

[0078] That is, the charge conduction layer 40 of the embodiment of the present invention is distributed on the edge of the non-hole area of ​​the cover plate 20. This arrangement can improve the greening problem of the edge area of ​​the cover plate 20 caused by static electricity.

[0079] In another optional embodiment, Figure 4 As shown, the sub-projection areas are arranged along the extension direction of the second ink edge 32 and are arranged at intervals. In order to avoid the influence of the large-area charge conduction layer 40 on the edge display effect and visual effect of the display panel 10, the sub-projection areas are also set to a segmented design in this embodiment. For example, the sub-projection areas are distributed in the four end areas of the viewing angle edge of the display panel 10. Similarly, the embodiment of the present invention does not limit the specific distribution position of the sub-projection areas located at the second ink edge 32. Those skilled in the art can design according to actual applications to improve the static electricity accumulation phenomenon while ensuring the display effect of the display panel 10.

[0080] In the embodiment of the present invention, the charge conduction layer 40 includes a plurality of patterned conduction traces 41, and the orthographic projection of one or more patterned conduction traces 41 on the display panel 10 forms a sub-projection area, such as Figure 5 As shown, the sub-projection area includes a conductive trace 41 as an example for description.

[0081] In an optional embodiment, if Figure 1 , Figure 2 and Figure 5 As shown, the conductive trace 41 includes a conductive portion 411 and a bridging portion 412 .

[0082] like Figure 5 As shown, the conductive part 411 has an opening, and the orthographic projection of the conductive part 411 on the display panel 10 and the orthographic projection of the conductive ink layer 30 on the display panel 10 form a ring structure. That is, the conductive ink layer 30 serves to seal the opening of the conductive part 411, so as to release the charge transmitted by the conductive part 411.

[0083] In an optional embodiment, if Figure 3 As shown, the length of the conductive portion 411 in the direction perpendicular to the first ink edge 31 is different. For example, the width of the conductive portion 411 at the end position of the display panel 10 is the same as the width of the conductive portion 411 in the middle area of ​​the display panel 10. This arrangement makes it suitable for display modules with special structures, thereby increasing the applicability of the display modules.

[0084] The overlapping portion 412 is connected to both ends of the conductive portion 411 . The overlapping portion 412 extends from the display area AA to the end of the display panel 10 . The overlapping portion 412 is located on a surface of the conductive ink layer 30 close to the display panel 10 .

[0085] like Figure 5 As shown, the end of the conductive portion 411 is flush with the boundary of the conductive ink layer 30 on one side close to the center of the display area AA in projection, and is extended by the overlapping portion 412 to ensure that the conductive trace 41 and the conductive ink layer 30 form a static electricity transmission path.

[0086] It is worth noting that in this embodiment, the "conductive portion 411" and the "overlapping portion 412" are intended to clarify partial routing of the conductive routing 41 at different positions, and do not limit the conductive routing 41 to form a physical boundary at the junction of the "conductive portion 411" and the "overlapping portion 412", which will not be repeated here.

[0087] In an optional embodiment, the display panel 10 includes a touch layer, and the touch layer's orthographic projection on the display panel 10 includes a plurality of patterned touch areas. In this embodiment, the sub-projection area includes a wire projection area at the location of the conductive trace 41 and a hollow projection area surrounded by the wire projection, wherein the hollow projection area corresponds to the touch area.

[0088] like Figure 5 As shown, Figure 5 The middle A area is the overlap area between the conductive trace 41 and the conductive ink layer 30. Figure 5 The middle B area is a hollow projection area, and no conductive wire is set in this area to avoid crosstalk with the touch area of ​​the display panel 10 at this position. Figure 5 The middle C area is the wire projection area. Therefore, the conductive traces 41 of this embodiment are distributed in a grid shape. Such a design can ensure that when a finger touches the hollow projection area at the position of the B area, the normal touch signal can be effectively detected. At the same time, the residual charge accumulated near the hole area can also be released through the conductive traces 41, taking into account both the "touch function and the electrostatic release function" and having a wide range of adaptability.

[0089] In an optional embodiment, if Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the conductive ink layer 30 includes a first ink edge portion 31 close to the hole area.

[0090] The conducting part 411 includes:

[0091] A first wiring portion 411A, wherein a first end portion of the first wiring portion 411A (close to the first ink edge portion 31) forms a first angle with the first ink edge portion 31, that is, the orthographic projections of the first ink edge portion 31 and the first wiring portion 411A on the cover plate 20 are intersecting;

[0092] The second routing portion 411B, the first end portion of the second routing portion 411B (close to the first ink edge portion 31) forms a second angle with the first ink edge portion 31, that is, the orthographic projections of the first ink edge portion 31 and the second routing portion 411B on the cover plate 20 are intersecting, and the second end portion of the first routing portion 411A is connected to the second end portion of the second routing portion 411B.

[0093] Based on the above design, the first routing portion 411A and the second routing portion 411B jointly form an opening toward the first ink edge 31. The opening of this embodiment may be a "U"-shaped opening, a "V"-shaped opening or a "W"-shaped opening, and technicians in this field may design it according to actual applications.

[0094] In an optional embodiment, if Figure 5 As shown, the second end of the first wiring portion 411A and the second end of the second wiring portion 411B are connected through the third wiring portion 411C, and the first wiring portion 411A, the second wiring portion 411B and the third wiring portion 411C form an opening toward the first ink edge portion 31, for example Figure 5 The “U”-shaped opening shown is, for example, similar in pattern to the touch pattern of the display panel 10 to avoid the influence of electrostatic charge on the touch signal, thereby improving the touch accuracy.

[0095] In an optional embodiment, if Figure 1 As shown, the arrangement direction of the multiple conductive traces 41 is the same as the extension direction of the first ink edge 31. Among two adjacent conductive traces 41, the first trace portion 411A of one conductive trace 41 and the second trace portion 411B of the other conductive trace 41 share the same trace portion.

[0096] Considering the convenience and cost-effectiveness of the implementation of the conductive wiring 41 structure, a plurality of conductive wirings 41 of this embodiment share one wiring portion, thereby improving process efficiency and reducing the impact of the conductive wiring 41 on the display effect.

[0097] In an optional embodiment, if Figure 7 As shown, the first routing portion 411A includes a plurality of first straight portions, and the bending angle between adjacent first straight portions is 115° to 175°; the second routing portion 411B includes a plurality of second straight portions, and the bending angle between adjacent second straight portions is 115° to 175°; the third routing portion 411C includes a plurality of third straight portions, and the bending angle between adjacent third straight portions is 115° to 175°.

[0098] In this embodiment, the wiring portions of the conductive portion 411 are arranged in a staggered manner to match any special-shaped structure of the cover plate 20, and this design can also reduce the visibility impact of the charge conduction layer 40 on the display panel 10. In this embodiment of the present invention, the wire width of the conductive wiring 41 is designed to be 100 μm ≤ S 1 ≤500μm, ensuring the electrostatic release effect of the hole area.

[0099] In an optional embodiment, if Figure 8 As shown, one or more places between the junction of the first straight line portion and the third straight line portion and the junction of the second straight line portion and the third straight line portion are arc-shaped structures, and the central angle β of the arc-shaped structure is 15° to 90°.

[0100] For the first routing portion 411A, this embodiment sets a smooth chamfer at the intersection of adjacent first straight portions; for the second routing portion 411B, this embodiment sets a smooth chamfer at the intersection of adjacent second straight portions; similarly, for the third routing portion 411C, this embodiment sets a smooth chamfer at the intersection of adjacent third straight portions. The above-mentioned actual design realizes a smooth transition at the intersection of the conductive routing 41. This setting can improve the charge concentration effect brought about by the routing sharp angle design, thereby improving the charge release effect.

[0101] In an optional embodiment, the intersection of the first routing portion 411A and the third routing portion 411C, and the intersection of the second routing portion 411B and the third routing portion 411C may also be provided with smooth chamfers to improve the charge concentration effect caused by the sharp corner design of the routing, thereby improving the charge release effect.

[0102] Based on the above configuration, the display module of the embodiment of the present invention has a charge conduction layer 40 disposed at the edge of the cover plate 20 corresponding to the hole area Hole, and the charge conduction layer 40 and the conductive ink layer 30 are overlapped to realize effective release of electrostatic charge in the AAhole area. Furthermore, the embodiment of the present invention also fixes the conductive ink layer 30 to the frame 50, thereby releasing the charge to the frame 50, thereby realizing efficient conduction of the charge.

[0103] The display module of the embodiment of the present invention also has the following characteristics:

[0104] ① High compatibility between process and equipment: No new process steps are added during the bonding process of the cover plate 20 and the display panel 10, and there is no need for complex modifications to the production line equipment, thereby ensuring the optimization of production efficiency and cost control.

[0105] ② No interference with touch performance: The sub-projection area of ​​the charge conduction layer 40 of this embodiment is compatible with the touch layer near the hole area, ensuring that the charge conduction layer 40 will not interfere with the stable transmission of the touch signal, while at the same time being able to effectively clean up the residual charge signal in the hole area to improve touch accuracy.

[0106] ③ Enhanced environmental adaptability: In order to address the problem of static electricity accumulation on the cover plate 20 that is easily caused by dry air in winter, the embodiment of the present invention actively conducts residual charges through the charge conduction layer 40 and the conductive ink layer 30, significantly reducing the impact of static electricity on touch performance, effectively preventing the phenomenon of random reporting of points in the hole area, and improving the stability and reliability of the product in various environments.

[0107] Another embodiment of the present invention provides a method for manufacturing a display module according to an embodiment of the present invention, the method comprising:

[0108] A conductive ink layer 30 is formed on the end edge of the first surface of the cover plate 20 to surround the display area AA;

[0109] A charge conduction layer 40 is formed on the first surface and on the surface of the conductive ink layer 30 away from the first surface, wherein the orthographic projection of the charge conduction layer 40 on the display panel 10 covers the orthographic projection of the hole area Hole on the display panel 10, and the orthographic projection of the charge conduction layer 40 and the conductive ink layer 30 have at least partially overlapping projections;

[0110] The cover plate 20 having the charge conduction layer 40 is fixed to the light emitting surface of the display panel 10 .

[0111] Based on the manufacturing method of the display module of the embodiment of the present invention, the manufacturing process and equipment compatibility of the charge conduction layer 40 are high. There is no need to add any new process steps during the bonding process of the cover plate 20 and the display panel 10 of the display module, and there is no need to make complex modifications to the production line equipment, thereby ensuring the optimization of production efficiency and cost control.

[0112] It is worth noting that the specific embodiment of the method for manufacturing the display module of the embodiment of the present invention can refer to the display module of the aforementioned embodiment, which will not be described in detail here.

[0113] Another embodiment of the present invention provides a display device, which includes the display module of the above embodiment of the present invention. The display device of the embodiment of the present invention can be any product or component with a display function, such as electronic paper, mobile phone, tablet computer, television, monitor, notebook computer, digital photo frame, navigator, etc., which is not limited in this embodiment.

[0114] In the description of the present invention, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0115] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the embodiments here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A display module, characterized in that: The display module comprises: A display panel, comprising a display area and a hole area located in the display area; a cover plate located at the light-emitting side of the display panel; A conductive ink layer located on a surface of the cover plate on one side close to the display panel is disposed at an end edge of the cover plate, and an orthographic projection of the conductive ink layer on the display panel surrounds an orthographic projection of the display area on the display panel; and A patterned charge conduction layer is located on the surface of the cover plate on one side close to the display panel, the orthographic projection of the charge conduction layer on the display panel surrounds the orthographic projection of the hole area on the display panel, and the orthographic projection of the charge conduction layer and the orthographic projection of the conductive ink layer have at least partially overlapping projections.

2. The display module according to claim 1, characterized in that: The charge conduction layer comprises a plurality of patterned conduction traces, wherein the conduction traces divide the orthographic projection of the charge conduction layer on the display panel into a plurality of sub-projection areas, at least one of the sub-projection areas surrounds the orthographic projection of the hole area on the display panel, The conductive traces include: A conductive portion having an opening, wherein an orthographic projection of the conductive portion on the display panel and an orthographic projection of the conductive ink layer on the display panel form an annular structure; and The overlapping parts are connected to the two ends of the conductive part, and the overlapping parts extend from the display area toward the end of the display panel. The overlapping parts are located on the surface of the conductive ink layer close to the display panel.

3. The display module according to claim 2, characterized in that: The conductive ink layer includes a first ink edge portion close to one side of the hole area, The conducting part comprises: a first wiring portion, wherein a first end of the first wiring portion forms a first angle with the first ink edge; a second wiring portion, wherein a first end of the second wiring portion forms a second angle with the first ink edge; The second end of the first routing portion is connected to the second end of the second routing portion, and the first routing portion and the second routing portion together form an opening facing the first ink edge portion.

4. The display module according to claim 3, characterized in that: The second end of the first routing portion and the second end of the second routing portion are connected through a third routing portion, and the first routing portion, the second routing portion and the third routing portion form an opening facing the first ink edge portion.

5. The display module according to claim 3, characterized in that: The arrangement direction of the plurality of conductive traces is the same as the extension direction of the first ink edge. Of the two adjacent conductive traces, a first trace portion of one conductive trace and a second trace portion of the other conductive trace share a same trace portion.

6. The display module according to any one of claims 3 or 4, characterized in that: The first routing portion includes a plurality of first straight line portions, and the bending angle between adjacent first straight line portions is 115° to 175°; The second routing portion includes a plurality of second straight line portions, and the bending angle between adjacent second straight line portions is 115° to 175°; or The third routing portion includes a plurality of third straight line portions, and a bending angle between adjacent third straight line portions is 115° to 175°.

7. The display module according to claim 6, characterized in that: One or more places between the adjacent first straight line portions, the adjacent second straight line portions, the adjacent third straight line portions, the junction between the first straight line portion and the third straight line portion, and the junction between the second straight line portion and the third straight line portion are arc structures, and the central angle of the arc structure is 15° to 90°.

8. The display module according to claim 3, characterized in that: The sub-projection areas are arranged and spaced apart along the extension direction of the first ink edge, and are located at one or more of the positions of the cover plate corresponding to the end of the first ink edge and the positions of the cover plate corresponding to the hole area.

9. The display module according to claim 8, characterized in that: The conductive ink layer also includes a second ink edge portion located in the non-hole area, The orthographic projection of the charge conduction layer on the cover plate is located in the cover plate at a position corresponding to the second ink edge, and has at least a partially overlapping projection with the orthographic projection of the second ink edge on the cover plate; or The sub-projection areas are arranged along the extension direction of the second ink edge and are spaced apart.

10. The display module according to claim 2, characterized in that: The display module also includes: A frame, the frame comprising a bottom plate and a side frame, and the display panel is located on the bottom plate of the frame; a first adhesive layer located between the display panel and the cover plate, the first adhesive layer covering the conductive portion and a surface of the cover plate of the display area close to the display panel; and A second adhesive layer is located between the side frame and the conductive ink layer, and the thickness of the second adhesive layer is greater than the thickness of the charge conduction layer.

11. A method for manufacturing a display module according to any one of claims 1 to 10, characterized in that: The method comprises: forming a conductive ink layer surrounding the display area at the end edge of the first surface of the cover plate; forming a charge conduction layer on the first surface and on a surface of the conductive ink layer away from the first surface, wherein the orthographic projection of the charge conduction layer on the display panel covers the orthographic projection of the hole area on the display panel, and the orthographic projection of the charge conduction layer and the orthographic projection of the conductive ink layer have at least partially overlapping projections; The cover plate having the charge conduction layer is fixed to the light emitting surface of the display panel.

12. A display device, characterized in that: The display device comprises the display module according to any one of claims 1 to 10.

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