Display module and display device

Abstract

The application discloses a display module and a display device. The display module comprises a first area and a second area, and comprises a display panel and a touch layer. The display panel comprises a substrate and an isolation structure which are arranged in layers. The isolation structure comprises a plurality of isolation openings and light transmission openings. At least part of the light transmission openings are located in the first area, and at least part of the isolation openings are located in the second area. The display module further comprises a light-emitting layer formed at least on one side of the substrate in the second area. The light-emitting layer comprises a plurality of light-emitting units. The light-emitting units comprise a first electrode, a light-emitting functional layer and a second electrode which are arranged in layers away from the substrate. The light-emitting functional layer is located in the isolation opening. The touch layer is formed on the side of the isolation structure away from the substrate, and comprises a touch electrode and a dummy electrode which are insulated from each other. The dummy electrode comprises a first dummy electrode. At least part of the first dummy electrode is located in the first area and is electrically connected to a fixed potential signal line. The display module provided by the application can improve the consistency of visual effects in the display area.

Description

Technical Field

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

[0002] With the development of display technology, the performance requirements for display devices are getting higher and higher. However, the problem of radio frequency interference between signals in the display panel in the existing technology seriously affects the performance of the display panel. Summary of the Invention

[0003] This application provides a display module and display device that can improve the consistency of visual effects within the display area and enhance display quality.

[0004] An embodiment of the first aspect of this application provides a display module, the display module including a first region and a second region, the display module comprising:

[0005] The display panel includes a substrate and an isolation structure stacked together. The isolation structure includes a plurality of isolation openings and light-transmitting openings. At least a portion of the light-transmitting openings are located in a first region, and at least a portion of the isolation openings are located in a second region. The display panel also includes a light-emitting layer. The light-emitting layer is formed at least on one side of the substrate in the second region and includes a plurality of light-emitting units. Each light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode stacked together in a direction away from the substrate. The light-emitting functional layer is located within the isolation openings.

[0006] A touch layer is formed on the side of the isolation structure opposite to the substrate. The touch layer includes a touch electrode and a dummy electrode. The touch electrode is insulated from the dummy electrode. The dummy electrode includes a first dummy electrode. At least a portion of the first dummy electrode is located in the first region. The first dummy electrode is electrically connected to a fixed potential signal line.

[0007] According to an embodiment of the first aspect of the present invention, the dummy electrode further includes a second dummy electrode located in the second region;

[0008] Preferably, the first dummy electrode and the second dummy electrode are respectively surrounded by different touch electrodes;

[0009] Preferably, the boundary line between the first dummy electrode and the touch electrode surrounding the first dummy electrode extends along a broken line or a curve, and the boundary line between the second dummy electrode and the touch electrode surrounding the second dummy electrode extends along a broken line or a curve.

[0010] Preferably, the orthographic projection area of ​​the second dummy electrode on the substrate is less than or equal to the orthographic projection area of ​​the first dummy electrode on the substrate.

[0011] According to any of the foregoing embodiments of the first aspect of the present invention, the first dummy electrode is electrically connected to the second dummy electrode, and the second dummy electrode is electrically connected to the fixed potential signal line, so that the first dummy electrode is electrically connected to the fixed potential signal line;

[0012] Preferably, the first dummy electrode and the second dummy electrode arranged in the same row as the first dummy electrode in the first direction are electrically connected to each other, and the second dummy electrode arranged in the same row as the first dummy electrode in the first direction is electrically connected to the fixed potential signal line.

[0013] Preferably, the first dummy electrode and the second dummy electrode arranged in the same row as the first dummy electrode in the first direction constitute a first dummy electrode row;

[0014] Multiple second dummy electrodes arranged in the same row in the first direction constitute a second dummy electrode row. The second dummy electrode row and the first dummy electrode row are different dummy electrode rows. Multiple second dummy electrodes in the same second dummy electrode row are electrically connected to each other.

[0015] Preferably, multiple second dummy electrodes in the same second dummy electrode array are electrically connected to the fixed potential signal line;

[0016] Preferably, the number of the second dummy electrode rows is multiple, and the sum of the number of the first dummy electrode rows and the number of the second dummy electrode rows is three or more. In the three or more dummy electrode rows, the spacing between two adjacent dummy electrode rows in the second direction is the same.

[0017] Preferably, the first direction is the row direction, and the second direction is the column direction;

[0018] Preferably, a plurality of second dummy electrodes arranged in the same row in the first direction and located in a different row from the second dummy electrode row constitute a third dummy electrode row, and the plurality of second dummy electrodes in the same third dummy electrode row are insulated from each other;

[0019] At least one of the third dummy electrode rows is located between two adjacent second dummy electrode rows, and / or at least one of the third dummy electrode rows is located between adjacent first dummy electrode rows and second dummy electrode rows;

[0020] Preferably, the number of third dummy electrode rows located between two adjacent second dummy electrode rows is n, and the number of third dummy electrode rows located between adjacent first dummy electrode rows and second dummy electrode rows is n, where n is an integer greater than or equal to 1;

[0021] Preferably, in the first dummy electrode row, the second dummy electrode row, and the third dummy electrode row, the spacing between two adjacent dummy electrode rows in the second direction is the same.

[0022] According to any of the foregoing embodiments of the first aspect of the present invention, the touch layer includes a first conductive layer and a second conductive layer arranged along the thickness direction of the display panel, the first conductive layer and the second conductive layer being insulated from each other; the first conductive layer includes a first connecting line and the second conductive layer includes the touch electrode and the dummy electrode;

[0023] The adjacent first dummy electrodes are connected through the first connecting line, and / or the first dummy electrode and the second dummy electrode are connected through the first connecting line;

[0024] Preferably, adjacent first dummy electrodes are connected by two first connecting lines along the first direction and / or along the second direction, and the two first connecting lines are symmetrical along the first direction / second direction;

[0025] Preferably, the first conductive layer further includes a first touch trace, which is insulated from the first connecting line; the second conductive layer further includes a second touch trace; and the touch electrode includes a first touch electrode and a second touch electrode.

[0026] The first touch electrodes that are at least partially adjacent along the second direction are electrically connected through the second touch trace, and the second touch electrodes that are at least partially adjacent along the first direction are electrically connected through the first touch trace.

[0027] Preferably, the orthographic projection of the first connecting line on the substrate and the orthographic projection of the first touch trace on the substrate do not overlap;

[0028] Preferably, both the touch electrode and the dummy electrode have a mesh structure.

[0029] According to any of the foregoing embodiments of the first aspect of the present invention, the first region includes a first sub-display area, the first sub-display area being close to the edge of the second region, and at least a portion of the first dummy electrode being located in the first sub-display area;

[0030] And / or,

[0031] The first region includes a second sub-display area, which is located at the center of the display panel along a first direction, and at least a portion of the first dummy electrode is located in the second sub-display area.

[0032] According to any of the foregoing embodiments of the first aspect of the present invention, the fixed potential signal line includes a DC signal line or a ground signal line;

[0033] Preferably, the DC signal line includes a power signal line;

[0034] Preferably, the power signal line includes a positive power signal line and a negative power signal line.

[0035] According to any of the foregoing embodiments of the first aspect of the present invention, the display module further includes a non-display area;

[0036] The touch layer also includes a connection portion electrically connected to the first dummy electrode. The connection portion extends from one end connected to the first dummy electrode to the non-display area and is electrically connected to the fixed potential signal line located on the display panel in the non-display area through a via.

[0037] According to any of the foregoing embodiments of the first aspect of the present invention, the display panel further includes:

[0038] A first encapsulation layer is located in the display area and formed on the side of the isolation structure opposite to the substrate;

[0039] The dam structure is formed in the non-display area;

[0040] The second encapsulation layer is formed on the side of the first encapsulation layer away from the substrate and is located on the side of the dam structure closer to the second region;

[0041] The via is located on the side of the dam structure away from the second region;

[0042] Preferably, it further includes a third encapsulation layer, which is located on the side of the dam structure and the second encapsulation layer away from the substrate, and the third encapsulation layer is partially located in the display area and partially located in the non-display area;

[0043] Preferably, the first encapsulation layer and the third encapsulation layer comprise inorganic materials, and the second encapsulation layer comprises organic materials.

[0044] According to any of the foregoing embodiments of the first aspect of the present invention, the display panel further includes:

[0045] A pixel definition layer is formed on the side of the first electrode away from the substrate, with part of it located in the display area and part of it located in the non-display area. It includes a pixel defining portion and a plurality of pixel openings. The pixel openings are used to expose the first electrode, and the light-emitting units correspond one-to-one with the pixel openings.

[0046] Preferably, the isolation structure is located on the side of the pixel definition layer away from the substrate, and includes a first isolation portion and a second isolation portion. The second isolation portion is located on the side of the first isolation portion away from the substrate, and the orthographic projection of the second isolation portion on the substrate covers the orthographic projection of the first isolation portion on the substrate.

[0047] Preferably, the second electrodes of adjacent light-emitting units are spaced apart, and the second electrodes of adjacent light-emitting units are electrically connected to the isolation structure.

[0048] According to any of the foregoing embodiments of the first aspect of the present invention, the isolation opening is further located in the first region;

[0049] Preferably, the light-emitting functional layer is located within the isolation opening in the first region and the isolation opening in the second region, respectively;

[0050] Preferably, the orthographic projection of the first region on the substrate lies within the orthographic projection of the first dummy electrode on the substrate;

[0051] Preferably, the light-transmitting opening is located only in the first region; or, the light-transmitting opening is located in both the first region and the second region.

[0052] The second aspect of this application also provides a display device, including any of the display modules provided in the first aspect of this application.

[0053] The display module provided in this application includes a display panel and a touch layer, with the touch layer disposed on one side of the display panel. The display panel includes a substrate, a light-emitting layer, and an isolation structure stacked on top of each other. The light-emitting layer is formed at least in a second region on one side of the substrate and includes multiple light-emitting units. Each light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode stacked along a direction away from the substrate. Specifically, the first region may also have light-emitting units, which is not particularly limited in this application. The isolation structure is formed on one side of the substrate and includes multiple isolation openings and light-transmitting openings. The light-emitting functional layer is located within the isolation openings, and at least a portion of the light-transmitting openings are located in the first region. The isolation structure enables the light-emitting units to be independent of each other, specifically enabling the light-emitting functional layer and the second electrode to be independent of each other, thereby improving the lateral crosstalk problem between the light-emitting units and enhancing the display effect of the display panel. The isolation openings are used to expose the light-emitting units to avoid affecting the display quality due to obstruction of the light-emitting units. At least a portion of the light-transmitting openings are located in the first region, thereby improving the light transmittance of the first region. The touch layer is formed on the side of the isolation structure facing away from the substrate and is used to realize the touch function of the display module. The touch layer includes touch electrodes and dummy electrodes. The touch electrodes are used to implement touch functionality. The touch electrodes are insulated from the dummy electrodes. The dummy electrodes include a first dummy electrode located in the first region. Because the isolation structure forms a light-transmitting opening, the shielding effect on signals within the substrate and the touch layer is lost at the light-transmitting opening. Therefore, by setting the first dummy electrode in the first region, the first dummy electrode occupies part of the original touch electrode position in the first region, thus moving the touch electrode away from the light-transmitting opening and improving the mutual interference problem between signals within the substrate and the touch layer. Furthermore, by electrically connecting the first dummy electrode to a fixed potential signal line, the shielding effect of the first dummy electrode can be improved, thereby increasing the yield of the display module. Simultaneously, by setting the first dummy electrode in the first region and the touch electrode in the second display area, the visual consistency between the first and second regions can be improved, enhancing display quality. Attached Figure Description

[0054] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a top view of a display module provided in an embodiment of this application;

[0056] Figure 2This is a schematic diagram of the isolation structure in the first region of a display module provided in an embodiment of this application;

[0057] Figure 3 This is a partial cross-sectional view of a first region in a display module provided in an embodiment of this application;

[0058] Figure 4 This is a schematic diagram of the isolation structure in the second region of a display module provided in an embodiment of this application;

[0059] Figure 5 This is a partial cross-sectional view of a second region in a display module provided in an embodiment of this application;

[0060] Figure 6 This is a top view of a touch layer in a display module provided in an embodiment of this application;

[0061] Figure 7 This is a top view of another touch layer within a display module provided in an embodiment of this application;

[0062] Figure 8 yes Figure 7 A magnified view of the N region;

[0063] Figure 9 yes Figure 8 A magnified view of a portion of the image;

[0064] Figure 10 This is a top view of another display module provided in the embodiments of this application;

[0065] Figure 11 This is a top view of another display module provided in the embodiments of this application;

[0066] Figure 12 This is a top view of another display module provided in the embodiments of this application;

[0067] Figure 13 This is a cross-sectional view of a display module provided in an embodiment of this application;

[0068] Figure 14 This is a top view of a display device provided in an embodiment of this application.

[0069] In the attached image:

[0070] 1-Display module; NA-Non-display area; AA1-First region; AA11-First sub-display area; AA12-Second sub-display area; AA2-Second region; 11-Display panel; 111-Substrate; 1111-Fixed potential signal line; 112-Light-emitting layer; 1120-Light-emitting unit; 1121-First electrode; 1122-Light-emitting functional layer; 1123-Second electrode; 113-Isolation structure; 1131-Isolation opening; 1132-Light-transmitting opening; 1133-First isolation part; 1134-Second isolation part; 12-Touch layer; 120-Dummy electrode row; 1201-First dummy electrode row; 1202-Second dummy electrode row; 1 203-Third dummy electrode row; 121-Touch electrode; 1211-First touch electrode; 1212-Second touch electrode; 122-Dummy electrode; 1221-First dummy electrode; 1222-Second dummy electrode; 123-First conductive layer; 1232-First connecting line; 1230-Connection part; 124-Second conductive layer; 1231-First touch trace; 1241-Second touch trace; x-First direction; y-Second direction; 13-Via; 14-Pixel definition layer; 141-Pixel opening; 15-First encapsulation layer; 16-Dam structure; 17-Second encapsulation layer; 18-Third encapsulation layer; 19-Insulating layer; 2-Display device. Detailed Implementation

[0071] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples thereof.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0073] The inventors discovered through research that display panels include light-emitting units, which consist of an anode and a cathode. One existing solution uses an isolation structure to block the light-emitting units. However, when applied to products with under-display photosensors (such as ambient light sensors or fingerprint sensors), this isolation structure blocks light, necessitating a perforated design to improve the light transmittance at the location of the under-display photosensor. However, when the isolation structure has a perforation, parasitic capacitance is generated between touch signals and display signals, leading to radio frequency interference between these signals. Based on research into these problems, the inventors provide a display module and display device to reduce signal interference and improve product yield.

[0074] To better understand this application, the following will be combined with... Figures 1 to 14 The display module and display device according to embodiments of this application will be described in detail.

[0075] Please see Figures 1 to 5 This application provides a display module 1, which includes a first region AA1 and a second region AA2. The display module 1 includes a display panel 11 and a touch layer 12. The display panel 11 includes a substrate 111 and an isolation structure 113 stacked together. The isolation structure 113 is formed on one side of the substrate 111 and includes a plurality of isolation openings 1131 and light-transmitting openings 1132. At least a portion of the light-transmitting openings 1132 are located in the first region AA1, and at least a portion of the isolation openings 1131 are located in the second region AA2. The display panel 11 also includes a light-emitting layer 112, which is formed at least on one side of the substrate 111 in the second region AA2 and includes a plurality of light-emitting units 1120. The light-emitting units 1120 include light-emitting elements along the edge away from the substrate 111. A first electrode 1121, a light-emitting functional layer 1122, and a second electrode 1123 are stacked in a specific direction. The light-emitting functional layer 1122 is located within an isolation opening 1131. A touch layer 12 is formed on the side of the isolation structure 113 away from the substrate 111. The touch layer 12 includes a touch electrode 121 and a dummy electrode 122. The touch electrode 121 is insulated from the dummy electrode 122. The dummy electrode 122 includes a first dummy electrode 1221. At least a portion of the first dummy electrode 1221 is located in a first region AA1. The first dummy electrode 1221 is electrically connected to a fixed potential signal line 1111.

[0076] The display module 1 provided in this application includes a display panel 11 and a touch layer 12, with the touch layer 12 disposed on one side of the display panel 11. The display panel 11 includes a substrate 111, a light-emitting layer 112, and an isolation structure 113 stacked together. The light-emitting layer 112 is formed at least in a second region AA2 on one side of the substrate 111, and includes multiple light-emitting units 1120. Each light-emitting unit 1120 includes a first electrode 1121, a light-emitting functional layer 1122, and a second electrode 1123 stacked together in a direction away from the substrate 111. Specifically, the first region AA1 may also have light-emitting units 1120, and this application does not impose any particular limitation on this. The isolation structure 113 is formed on one side of the substrate 111, and includes multiple isolation openings 1131 and light-transmitting openings 1132. The light-emitting functional layer 1122 is located within the isolation openings 1131, and at least a portion of the light-transmitting openings 1132 are located in the first region AA1. The isolation structure 113 enables the light-emitting units 1120 to be independent of each other. Specifically, it enables the light-emitting functional layer 1122 and the second electrode 1123 to be independent of each other, thereby improving the lateral crosstalk problem between the light-emitting units 1120 and enhancing the display effect of the display panel 11. The isolation opening 1131 is used to expose the light-emitting units 1120 to avoid affecting the display quality due to blocking the light-emitting units 1120. At least part of the light-transmitting opening 1132 is located in the first region AA1, thereby improving the light transmittance of the first region AA1. The touch layer 12 is formed on the side of the isolation structure 113 away from the substrate 111 and is used to realize the touch function of the display module 1. The touch layer 12 includes a touch electrode 121 and a dummy electrode 122. The touch electrode 121 can be used to implement touch functions. The touch electrode 121 and the dummy electrode 122 are insulated. The dummy electrode 122 includes a first dummy electrode 1221, which is located in the first region AA1. Because the isolation structure 113 forms a light-transmitting opening 1132, the shielding effect on the signals in the substrate 111 and the touch layer 12 is lost at the location of the light-transmitting opening 1132. Therefore, through the first region AA1, the signal can be transmitted through the light-transmitting opening 1132. A first dummy electrode 1221 is provided in region AA1, which occupies part of the original position of the touch electrode 121 in the first region AA1. This allows the touch electrode 121 to be moved away from the light-transmitting hole, thereby improving the mutual interference problem between the signals in the substrate 111 and the touch layer 12. By electrically connecting the first dummy electrode 1221 to the fixed potential signal line 1111, the shielding effect of the first dummy electrode 1221 can be improved, thereby improving the yield of the display module 1. At the same time, by providing the first dummy electrode 1221 in the first region AA1 and the touch electrode 121 in the second display area AA, the visual consistency between the first region AA1 and the second region AA2 can be improved, thus improving the display quality.

[0077] The display module 1 provided in this application includes a first region AA1 and a second region AA2, wherein the light transmittance of the first region AA1 is higher than that of the second region AA2. Specifically, the first region AA1 can be the area where a sensor is installed, such as a camera module or a fingerprint recognition module. The high light transmittance of the first region AA1 can provide better working conditions for the photosensitive device, thereby improving the performance of the photosensitive device. In the above embodiment, both the first region AA1 and the second region AA2 can have display functions. Specifically, the isolation structure 113 of the first region AA1 and the second region AA2 each has multiple isolation openings 1131, and light-emitting units are located within the isolation openings 1131 of the first region AA1 and the second region AA2. The isolation structure 113 of the first region AA1 also has a light-transmitting opening 1132. The light-transmitting opening 1132 can be provided only on the isolation structure 113 of the first region AA1, or the light-transmitting opening 1132 can be provided on both the isolation structure 113 of the first region AA1 and the isolation structure 113 of the second region AA2.

[0078] Alternatively, the second region AA2 may have a display function, while the first region AA1 may not. Specifically, the isolation structure 113 of both the first region AA1 and the second region AA2 has multiple isolation openings 1131, and the isolation opening 1131 of the second region AA2 contains a light-emitting unit. The isolation opening 1131 of the first region AA1 does not contain a light-emitting unit, or the light-emitting unit in the isolation opening 1131 of the first region AA1 does not emit light. The isolation structure 113 of the first region AA1 also has a light-transmitting opening 1132.

[0079] When the first region AA1 is small, the touch electrode 121 can be located only in the second region AA2, not in the first region AA1, and only the first dummy electrode 1221 can be set in the first region AA1. When the first region AA1 is large, multiple first dummy electrodes 1221 can be set, or both the first dummy electrode 1221 and the touch electrode 121 can be set simultaneously, while still maintaining the touch function of the first region AA1, thereby improving the user experience; in this case, the first dummy electrode 1221 can improve the shielding effect at certain locations within the first region AA1.

[0080] In one feasible implementation, such as Figure 6 As shown, the dummy electrode 122 also includes a second dummy electrode 1222 located in the second region AA2.

[0081] In the above embodiments, the dummy electrode 122 further includes a second dummy electrode 1222, which is located in the second region AA2. The second dummy electrode 1222 can be electrically connected to the fixed potential signal line 1111 or not connected to any potential. This application does not make any special limitation in this regard.

[0082] In the above embodiments, the setting of the second dummy electrode 1222 can, on the one hand, further reduce the visual consistency between the first region AA1 and the second region AA2 and improve the display quality; on the other hand, it can play a shielding role, making the signal in the touch electrode 121 more stable.

[0083] In one feasible implementation, such as Figure 6 As shown, the first dummy electrode 1221 and the second dummy electrode 1222 are respectively surrounded by different touch electrodes 121. That is, one touch electrode 121 surrounds one first dummy electrode 1221, and the touch electrodes 121 surrounding the first dummy electrode 1221 do not surround the second dummy electrode 1222; one touch electrode 121 surrounds one second dummy electrode 1222, and the touch electrodes 121 surrounding the second dummy electrode 1222 do not surround the first dummy electrode 1221; there is a touch electrode 121 between the first dummy electrode 1221 and the second dummy electrode 1222. This achieves a one-to-one correspondence between the first dummy electrode 1221 and the touch electrode 121, and a one-to-one correspondence between the second dummy electrode 1222 and the touch electrode 121. The second dummy electrode 1222 can shield noise at the middle position of the touch electrode 121, thereby improving the stability of the signal within the touch electrode 121.

[0084] In one feasible implementation, such as Figure 7 , Figure 8 and Figure 9 As shown, the boundary line between the first dummy electrode 1221 and the touch electrode 121 surrounding the first dummy electrode 1221 extends along a broken line or curve, and the boundary line L between the second dummy electrode 1222 and the touch electrode 121 surrounding the second dummy electrode 1222 extends along a broken line or curve. This makes the boundary lines between the first dummy electrode 1221 and the touch electrode 121, and between the second dummy electrode 1222 and the touch electrode 121, less easily discernible to the naked eye, thereby improving display uniformity, enhancing the visual display effect of the product, and improving the user experience.

[0085] In one feasible implementation, the orthogonal projection area of ​​the second dummy electrode 1222 on the substrate 111 is less than or equal to the orthogonal projection area of ​​the first dummy electrode 1221 on the substrate 111.

[0086] In the above embodiments, by setting the first dummy electrode 1221 to a larger size, the shielding range can be increased, thereby reducing signal interference transmitted through the light-transmitting hole in the inner diameter of the first region AA1. Setting the second dummy electrode 1222 in the second region AA2 to a smaller size can increase the area ratio of the touch electrode 121, thereby improving touch quality.

[0087] In one feasible implementation, such as Figure 6As shown, the first dummy electrode 1221 is electrically connected to the second dummy electrode 1222, and the second dummy electrode 1222 is electrically connected to the fixed potential signal line 1111, so that the first dummy electrode 1221 is electrically connected to the fixed potential signal line 1111.

[0088] In the above embodiments, by electrically connecting the second dummy electrode 1222 to the first dummy electrode 1221 and electrically connecting the second dummy electrode 1222 to the fixed potential signal line 1111, the position where the first dummy electrode 1221 is electrically connected to the fixed potential signal line 1111 can be moved. Specifically, it can be moved to the edge of the second display area, so as to simplify the wiring of the electrical connection and reduce the adverse effect of the via 13 of the electrical connection on the display effect of the display area.

[0089] In one feasible implementation, such as Figure 6 As shown, the first dummy electrode 1221 and the second dummy electrode 1222 arranged in the same row as the first dummy electrode 1221 in the first direction x are electrically connected to each other. The second dummy electrode 1222 arranged in the same row as the first dummy electrode 1221 in the first direction x is electrically connected to the fixed potential signal line 1111.

[0090] In the above embodiment, the first dummy electrode 1221 can be located in the display panel 11 at a position far from the edge. By electrically connecting the first dummy electrode 1221 to the second dummy electrode 1222 arranged in the same row as the first dummy electrode 1221 in the first direction x, the position where the first dummy electrode 1221 is electrically connected to the fixed potential signal line 1111 can be transferred along the first direction x to the edge of the display panel 11. The second dummy electrode 1222 is electrically connected to the fixed potential signal line 1111, thereby realizing the indirect electrical connection between the first dummy electrode 1221 and the fixed potential signal line 1111. This helps to reduce the difficulty of connecting the first dummy electrode 1221 and the fixed potential signal line 1111 and reduce the adverse effects on the display quality of the display panel 11.

[0091] Specifically, the touch electrodes 121 can be arranged along the row and column directions. The first direction x can be either the row direction or the column direction to facilitate electrical connection between adjacent second dummy electrodes 1222. When it is the row direction, since the row direction is generally shorter than the column direction, the connection difficulty can be further reduced.

[0092] In one feasible implementation, such as Figure 6As shown, the first dummy electrode 1221 and the second dummy electrode 1222 arranged in the same row as the first dummy electrode 1221 in the first direction x constitute the first dummy electrode row 1201; the multiple second dummy electrodes 1222 arranged in the same row in the first direction x constitute the second dummy electrode row 1202. The second dummy electrode row 1202 and the first dummy electrode row 1201 are different dummy electrode rows 120. The multiple second dummy electrodes 1222 in the same second dummy electrode row 1202 are electrically connected to each other.

[0093] In the above embodiments, such as Figure 10 As shown, the display panel 11 includes a plurality of dummy electrode rows 120, which can be arranged along a second direction y, which is perpendicular to the first direction x.

[0094] The plurality of dummy electrode rows 120 includes a first dummy electrode row 1201 and a second dummy electrode row 1202. The first dummy electrode row 1201 includes a first dummy electrode 1221 and a second dummy electrode 1222 arranged and electrically connected along a first direction x. The second dummy electrode row 1202 includes second dummy electrodes 1222 arranged and electrically connected along a second direction y. In the first dummy electrode row 1201, the first dummy electrode 1221 can be transferred to the edge of the display panel 11 by the plurality of interconnected second dummy electrodes 1222, which are electrically connected to the fixed potential signal line 1111. The second dummy electrode row 1202 includes a plurality of second dummy electrodes 1222 electrically connected along the first direction x, thus maintaining the consistency between the position of the second dummy electrode row 1202 and the position of the first dummy electrode row 1201 in the display panel 11, thereby further improving the display quality of the display panel 11.

[0095] Specifically, the first dummy electrode array 1201 may include one first dummy electrode 1221, or it may include multiple first dummy electrodes 1221 that are electrically connected to each other. This application does not make any particular limitation in this regard. The number of first dummy electrodes 1221 can be set according to the actual area of ​​the first region AA1. Furthermore, the multiple first dummy electrodes 1221 may be arranged along the first direction x, or they may be arranged in an array along the first direction x and the second direction y. This application does not make any particular limitation in this regard. The arrangement of the first dummy electrodes 1221 can be set according to the actual shape of the first region AA1.

[0096] In one feasible implementation, multiple second dummy electrodes 1222 in the same second dummy electrode array 1202 are electrically connected to a fixed potential signal line 1111. This further enhances the noise shielding effect of the second dummy electrodes 1222, thereby improving the signal stability of the touch electrode 121.

[0097] In one feasible implementation, such as Figure 10As shown, there are multiple second dummy electrode rows 1202. The sum of the number of first dummy electrode rows 1201 and the number of second dummy electrode rows 1202 is three or more. Among the three or more dummy electrode rows 120, the spacing between two adjacent dummy electrode rows 120 in the second direction y is the same.

[0098] In the above embodiment, the number of second dummy electrode rows 1202 is multiple, specifically, there may be two or more, so that they can be symmetrically distributed on both sides of the first dummy electrode rows 1201 along the second direction y, thereby improving the display uniformity within this area.

[0099] In the above embodiments, such as Figure 10 As shown, the sum of the number of the first dummy electrode rows 1201 and the number of the second dummy electrode rows 1202 is three or more. Among the three or more dummy electrode rows 120, the spacing between two adjacent dummy electrode rows 120 in the second direction y is the same. That is, the dummy electrode rows 120 are evenly distributed in the display panel 11 along the second direction y with the same spacing, thereby further improving the display uniformity of the entire display panel 11.

[0100] In one feasible implementation, the first direction x is the row direction and the second direction y is the column direction.

[0101] In one feasible implementation, such as Figure 11 As shown, a plurality of second dummy electrodes 1222 arranged in the same row along the first direction x, and located in a different row from the second dummy electrode row 1202, constitute a third dummy electrode row 1203. The plurality of second dummy electrodes 1222 within the same third dummy electrode row 1203 are mutually insulated. That is, the dummy electrode row 120 includes a first dummy electrode row 1201, a second dummy electrode row 1202, and a third dummy electrode row 1203. The first dummy electrode row 1201 includes first dummy electrodes 1221 and second dummy electrodes 1222 arranged and electrically connected along the first direction x. The second dummy electrode row 1202 includes second dummy electrodes 1222 arranged and electrically connected along the second direction y. The third dummy electrode row 1203 includes a plurality of second dummy electrodes 1222 arranged along the first direction x and mutually insulated. The first dummy electrode row 1201, the second dummy electrode row 1202, and the third dummy electrode row 1203 are mutually insulated. The third dummy electrode row 1203 can, on the one hand, omit the electrical connection between adjacent second dummy electrodes 1222 along the first direction x, thereby simplifying the manufacturing process; on the other hand, it can realize the electrical connection of some second dummy electrodes 1222 within the second region AA2, while maintaining the display consistency in the display panel 11 while partially isolating the second dummy electrodes 1222 from each other.

[0102] In one feasible implementation, at least one third dummy electrode row 1203 is located between two adjacent second dummy electrode rows 1202, and / or, at least one third dummy electrode row 1203 is located between adjacent first dummy electrode rows 1201 and second dummy electrode rows 1202.

[0103] Specifically, the second dummy electrode row 1202 and the third dummy electrode row 1203 can be arranged alternately along the second direction y, with the first dummy electrode row 1201 consisting of one row interspersed between an adjacent row of second electrodes 1123 and a row of third electrodes. Alternatively, the second dummy electrode row 1202 and the third dummy electrode row 1203 can be arranged alternately along the second direction y, with the first dummy electrode row 1201 consisting of one row and replacing the position of either a row of second dummy electrode rows 1202 or a row of third dummy electrode rows 1203. That is, the first dummy electrode 1221 is adjacent to the second dummy electrode row 1202 on both sides along the second direction y, or adjacent to the third dummy electrode row 1203 respectively. This achieves a uniform display effect.

[0104] In one feasible implementation, the number of third dummy electrode rows 1203 located between two adjacent second dummy electrode rows 1202 is n, and the number of third dummy electrode rows 1203 located between adjacent first dummy electrode rows 1201 and second dummy electrode rows 1202 is n, where n is an integer greater than or equal to 1.

[0105] In the above embodiments, the number of third dummy electrode rows 1203 between two adjacent second dummy electrodes 1222 and between adjacent first dummy electrode rows 1201 and second dummy electrode rows 1202 is the same, thereby improving display uniformity.

[0106] In one feasible implementation, such as Figure 11 As shown, in the first dummy electrode row 1201, the second dummy electrode row 1202, and the third dummy electrode row 1203, the spacing between two adjacent dummy electrode rows 120 is the same in the second direction y. This improves the display uniformity of the display panel 11 along the second direction y.

[0107] In one feasible embodiment, the touch layer 12 includes a first conductive layer 123 and a second conductive layer 124 arranged along the thickness direction of the display panel 11, the first conductive layer 123 and the second conductive layer 124 being insulated from each other; the first conductive layer 123 includes a first connecting line 1232 and the second conductive layer 124 includes a touch electrode 121 and a dummy electrode 122.

[0108] Specifically, the second conductive layer 124 is located on the side of the first conductive layer 123 away from the display panel 11, or the first conductive layer 123 is located on the side of the second conductive layer 124 away from the display panel 11. This application does not make any special limitation on this.

[0109] In the above embodiments, the touch electrode 121 and the dummy electrode 122 are located on the same layer, thereby simplifying the manufacturing process.

[0110] In the above embodiments, adjacent first dummy electrodes 1221 are connected by a first connecting line 1232, and / or, the first dummy electrode 1221 and the second dummy electrode 1222 are connected by a first connecting line 1232. Since some touch electrodes 121 are arranged around the first dummy electrode 1221 and some touch electrodes 121 are arranged around the second dummy electrode 1222, the touch electrodes 121 and dummy electrodes 122 are arranged on the same layer, and the touch electrodes 121 and the first trace are arranged on different layers, thus, when the first trace connects adjacent first dummy electrodes 1221, or adjacent first dummy electrodes 1221 and second dummy electrodes 1222, it is less likely to interfere with the wiring of the touch electrodes 121. The first connecting line 1232 and the dummy electrode 122 need to be connected via a bridge, that is, there is an insulating layer 19 between the first conductive layer 123 and the second conductive layer 124, and the first connecting line 1232 and the dummy electrode 122 need to be electrically connected through a via 13 penetrating the insulating layer 19.

[0111] In the above embodiment, adjacent first dummy electrodes 1221 along the first direction x and / or along the second direction y are connected by two first connecting lines 1232, and the two first connecting lines 1232 are symmetrical about the first direction x and the second direction y. On the one hand, using two first connecting lines 1232 to realize the electrical connection layer of two adjacent first dummy electrodes 1221 can improve the stability of the electrical connection; on the other hand, two adjacent first dummy electrodes 1221 along the first direction x are connected by two first connecting lines 1232, and these two first connecting lines 1232 are symmetrical about the second direction y; two adjacent second dummy electrodes 1222 along the second direction y are connected by first connecting lines 1232, and these two first connecting lines 1232 are symmetrical about the first direction x, thereby improving the visual symmetry, reducing the abrupt visual effect, and at the same time facilitating the realization that the resistance of the two first connecting lines 1232 is the same, thus improving the electrical connection effect.

[0112] In one feasible implementation, such as Figure 7 and Figure 12 As shown, the first conductive layer 123 also includes a first touch trace 1231, which is insulated from the first connecting line 1232. The second conductive layer 124 also includes a second touch trace 1241. The touch electrode 121 includes a first touch electrode 1211 and a second touch electrode 1212.

[0113] In one feasible implementation, the orthographic projection of the first connecting line 1232 on the substrate 111 does not overlap with the orthographic projection of the first touch trace 1231 on the substrate 111. That is, the first touch trace 1231 and the first connecting line 1232 are located on the same layer, and a preset distance is spaced between the first touch trace 1231 and the first connecting line 1232 to achieve mutual insulation between them.

[0114] In one feasible implementation, the first touch electrodes 1211 that are at least partially adjacent along the second direction y are electrically connected via the second touch trace 1241, and the second touch electrodes 1212 that are at least partially adjacent along the first direction x are electrically connected via the first touch trace 1231.

[0115] In the above embodiments, the first touch electrodes 1211 are arranged in an array, and the first touch electrodes 1211 that are at least partially adjacent along the second direction y are electrically connected through the first touch trace 1231. The second touch electrodes 1212 are arranged in an array, and the second touch electrodes 1212 that are at least partially adjacent along the first direction x are electrically connected through the second touch trace 1241.

[0116] Specifically, the first touch electrode 1211 and the first touch trace 1231 are connected through a via 13 penetrating the insulating layer 19.

[0117] In the above embodiments, both the touch electrode 121 and the dummy electrode 122 are mesh structures. This avoids obscuring the light-emitting unit 1120 and the light-transmitting opening 1132, thereby achieving light transmission.

[0118] Specifically, the orthographic projection of the touch electrode 121 on the substrate 111 does not overlap with the orthographic projection of the isolation opening 1131 on the substrate 111, and the orthographic projection of the touch electrode 121 on the substrate 111 does not overlap with the orthographic projection of the light-transmitting opening 1132 on the substrate 111, so as to avoid blocking the isolation opening 1131 and the light-transmitting opening 1132, and to ensure good display effect and light transmittance.

[0119] Specifically, the orthographic projection of the dummy electrode 122 on the substrate 111 does not overlap with the orthographic projection of the isolation opening 1131 on the substrate 111, and the orthographic projection of the dummy electrode 122 on the substrate 111 does not overlap with the orthographic projection of the light-transmitting opening 1132 on the substrate 111, so as to avoid blocking the isolation opening 1131 and the light-transmitting opening 1132, and to ensure good display effect and light transmittance.

[0120] In one feasible implementation, such as Figure 12 As shown, the first region AA1 includes a first sub-display area AA11, which is close to the edge of the second region AA2, and at least part of the first dummy electrode 1221 is located in the first sub-display area AA11.

[0121] And / or,

[0122] The first region AA1 includes a second sub-display area AA12, which is located at the center of the display panel 11 along the first direction x, and at least part of the first dummy electrode 1221 is located in the second sub-display area AA12.

[0123] In the above embodiments, the first sub-display area AA11 may include an ambient light sensor, such as a camera module or a fingerprint recognition module. Specifically, the second area AA2 may be arranged around the first area AA1, and the first sub-display area AA11 is close to the edge of the second area AA2. The first sub-display area AA11 includes a first dummy electrode 1221, which can extend directly to the edge of the second area AA2 and is electrically connected to a fixed potential signal line 1111.

[0124] The second sub-display area AA12 may include a fingerprint recognition sensor. Specifically, the second sub-display area AA12 may be located at the center of the display panel 11 along the first direction x. The second sub-display area AA12 includes a first dummy electrode 1221, specifically including a plurality of electrically connected first dummy electrodes 1221. The plurality of electrically connected first dummy electrodes 1221 may form a first dummy electrode row 1201 with the second dummy electrode 1222 located in the second region AA2, and extend to the edge of the second region AA2 to be electrically connected to the fixed potential signal line 1111.

[0125] Specifically, the first area AA1 includes at least one of the first sub-display area AA11 and the second sub-display area AA12.

[0126] In one possible implementation, the fixed potential signal line 1111 includes a DC signal line or a ground signal line.

[0127] In the above embodiment, the substrate 111 includes a DC signal line. Connecting the dummy electrode 122 to the DC signal line can provide a DC signal to the dummy electrode 122, so that its potential is not coupled by the touch electrode 121 and / or the signal line in the substrate 111.

[0128] The substrate 111 also includes a ground signal line. Connecting the dummy electrode 122 to the ground signal line can also provide a stable electrical signal for the dummy electrode 122, so that its potential will not be coupled by the touch electrode 121 and / or the signal line in the substrate 111.

[0129] By providing a DC signal to the dummy electrode 122 through the DC signal line in the substrate 111, it is possible to avoid adding a new DC signal line, which helps to simplify the power supply lines in the display panel 11.

[0130] Specifically, DC signal lines may include power signal lines.

[0131] Specifically, the power signal lines include positive power signal lines and negative power signal lines.

[0132] Among them, the positive power supply signal line can be a high-level signal line (ELVDD), and the negative power supply signal line can be a low-level signal line (ELVSS). The high-level signal line (ELVDD) and the low-level signal line (ELVSS) are DC signals with strong driving force, which helps to improve the anti-interference performance.

[0133] In one feasible implementation, such as Figure 12 As shown, display module 1 also includes a non-display area NA;

[0134] The touch layer 12 also includes a connection portion 1230 electrically connected to the first dummy electrode 1221. The connection portion 1230 extends from one end connected to the first dummy electrode 1221 to the non-display area NA, and is electrically connected to the fixed potential signal line 1111 located on the display panel 11 through a via 13 in the non-display area NA.

[0135] In the above embodiments, the non-display area NA may be disposed around at least a portion of the edge of the second region AA2.

[0136] In the above embodiments, connecting the first dummy electrode 1221 to the fixed potential signal line 1111 via the via 13 can save the length of the connection part 1230. At the same time, the via 13 is located in the non-display area NA, which can reduce the interference of the via 13 on the display effect. Specifically, the via 13 is not located in the first region AA1 and the second region AA2, so that when both the first region AA1 and the second region AA2 are used for display, the difference in display effect within the first region AA1 and the second region AA2 can be reduced, that is, the difference in display effect between the region where the via 13 is set and other regions caused by the setting of the via 13 can be reduced.

[0137] In one feasible implementation, such as Figure 13 As shown, the display panel 11 also includes a first encapsulation layer 15, a dam structure 16, and a second encapsulation layer 17. The first encapsulation layer 15 is located in the display area and is formed on the side of the isolation structure 113 away from the substrate 111. The dam structure 16 is formed in the non-display area NA. The second encapsulation layer 17 is formed on the side of the first encapsulation layer 15 away from the substrate 111 and is located on the side of the dam structure 16 close to the second region AA2. The via 13 is located on the side of the dam structure 16 away from the second region AA2.

[0138] In the above embodiments, the second encapsulation layer 17 can be blocked by setting a dam structure 16 in the non-display area NA. The material of the second encapsulation layer 17 is often an organic material. Organic materials have strong fluidity. By blocking them with the dam structure 16, it can prevent them from diffusing and affecting the uniformity of their own film formation and the preparation of other film layers.

[0139] In one feasible implementation, such as Figure 13 As shown, it also includes a third encapsulation layer 18, which is located on the side of the dam structure 16 and the second encapsulation layer 17 away from the substrate 111. The third encapsulation layer 18 is partially located in the display area and partially located in the non-display area NA.

[0140] Specifically, the first encapsulation layer 15 and the third encapsulation layer 18 include inorganic materials, and the second encapsulation layer 17 includes organic materials.

[0141] Organic and inorganic materials are used alternately to achieve better encapsulation. The first encapsulation layer 15 is made of inorganic material, which has good water and oxygen isolation properties and directly contacts the isolation structure 113 to encapsulate each light-emitting unit 1120. The second encapsulation layer 17 uses organic material, which has high fluidity and provides a flat surface for the third encapsulation layer 18. The third encapsulation layer 18 is made of inorganic material, which also has good water and oxygen isolation properties, further improving encapsulation reliability.

[0142] In one feasible implementation, such as Figure 13 As shown, the display panel 11 also includes a pixel definition layer 14, which is formed on the side of the first electrode 1121 away from the substrate 111. Part of it is located in the display area and part of it is located in the non-display area NA. It includes a pixel defining part and a plurality of pixel openings 141. The pixel openings 141 are used to expose the first electrode 1121. The light-emitting unit 1120 corresponds to the pixel opening 141 one by one.

[0143] In the above embodiments, the display panel 11 may include light-emitting units 1120 of at least three colors. The pixel definition layer 14 includes at least a first pixel opening 141, a second pixel opening 141, and a third pixel opening 141. Specifically, when the display panel 11 includes light-emitting units 1120 of three colors, the first pixel opening 141 is used to form a red light-emitting unit 1120, the second pixel opening 141 is used to form a green light-emitting unit 1120, and the third pixel opening 141 is used to form a blue light-emitting unit 1120. When the display panel 11 also includes a white light-emitting unit 1120, the pixel definition layer 14 may also include a fourth pixel opening 141 for forming a white light-emitting unit 1120.

[0144] In the above embodiments, the isolation structure 113 is located on the side of the pixel definition layer 14 away from the substrate 111, and includes a first isolation portion 1133 and a second isolation portion 1134. The second isolation portion 1134 is located on the side of the first isolation portion 1133 away from the substrate 111, and the orthogonal projection of the second isolation portion 1134 on the substrate 111 covers the orthogonal projection of the first isolation portion 1133 on the substrate 111.

[0145] By setting the isolation structure 113, the light-emitting units 1120 of different colors can be fabricated individually and independently. Specifically, the continuous arrangement of the light-emitting functional layers 1122 between adjacent light-emitting units 1120 can cause lateral crosstalk, leading to erroneous emission of adjacent light-emitting units 1120 and affecting display quality. By setting each light-emitting unit 1120 independently, the problem of lateral crosstalk between adjacent light-emitting units 1120 can be improved, thereby enhancing the display quality of the display panel 11. Furthermore, when the display panel 11 includes the isolation structure 113, the light-emitting units 1120 of each color can be fabricated as a whole layer first and then patterned, thus eliminating the need for a mask and reducing costs. The light-emitting units 1120 of different colors are fabricated in different sequences. During the patterning process of the later-fabricated light-emitting units 1120, isolation can be achieved through the isolation structure 113, improving the yield of the patterning process and reducing the impact of patterning on the yield of the light-emitting units 1120.

[0146] Specifically, the second electrodes 1123 of adjacent light-emitting units 1120 are spaced apart, and the second electrodes 1123 of adjacent light-emitting units 1120 are electrically connected to the isolation structure 113.

[0147] In the above embodiments, the second electrodes 1123 are independent of each other, making it difficult to supply power to each second electrode 1123. In the display panel 11 provided in this application, the electrical connection of each second electrode 1123 is achieved through the isolation structure 113, which has strong connection reliability and thus realizes synchronous power supply to each second electrode 1123, simplifying the number of power supply lines and the manufacturing process.

[0148] This application also provides a display device 2. For example... Figure 14 As shown, the display device 2 includes any of the display modules 1 provided in the above embodiments. This display device 2 offers better display uniformity and display quality.

[0149] The display device 2 can be a mobile terminal such as a mobile phone or laptop, or a fixed terminal such as a television or computer monitor, or a wearable device such as a watch. This application does not make any special limitations.

[0150] The embodiments described above are not exhaustive and do not limit the invention to specific examples. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display module, characterized in that, The display module includes a first region and a second region, and the display module includes: The display panel includes a substrate and an isolation structure stacked together. The isolation structure includes a plurality of isolation openings and light-transmitting openings. At least a portion of the light-transmitting openings are located in a first region, and at least a portion of the isolation openings are located in a second region. The display panel also includes a light-emitting layer. The light-emitting layer is formed at least on one side of the substrate in the second region and includes a plurality of light-emitting units. Each light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode stacked together in a direction away from the substrate. The light-emitting functional layer is located within the isolation openings. A touch layer is formed on the side of the isolation structure opposite to the substrate. The touch layer includes a touch electrode and a dummy electrode. The touch electrode is insulated from the dummy electrode. The dummy electrode includes a first dummy electrode. At least a portion of the first dummy electrode is located in the first region. The first dummy electrode is electrically connected to a fixed potential signal line.

2. The display module according to claim 1, characterized in that, The dummy electrode also includes a second dummy electrode located in the second region.

3. The display module according to claim 2, characterized in that, The first dummy electrode and the second dummy electrode are respectively surrounded by different touch electrodes.

4. The display module according to claim 2, characterized in that, The boundary line between the first dummy electrode and the touch electrode surrounding the first dummy electrode extends along a broken line or curve, and the boundary line between the second dummy electrode and the touch electrode surrounding the second dummy electrode extends along a broken line or curve.

5. The display module according to claim 2, characterized in that, The projected area of ​​the second dummy electrode on the substrate is less than or equal to the projected area of ​​the first dummy electrode on the substrate.

6. The display module according to claim 2, characterized in that, The first dummy electrode is electrically connected to the second dummy electrode, and the second dummy electrode is electrically connected to the fixed potential signal line, so that the first dummy electrode is electrically connected to the fixed potential signal line.

7. The display module according to claim 6, characterized in that, The first dummy electrode and the second dummy electrode arranged in the same row as the first dummy electrode in the first direction are electrically connected to each other, and the second dummy electrode arranged in the same row as the first dummy electrode in the first direction is electrically connected to the fixed potential signal line.

8. The display module according to claim 7, characterized in that, The first dummy electrode and the second dummy electrode arranged in the same row as the first dummy electrode in the first direction constitute the first dummy electrode row; Multiple second dummy electrodes arranged in the same row in the first direction constitute a second dummy electrode row. The second dummy electrode row and the first dummy electrode row are different dummy electrode rows. Multiple second dummy electrodes in the same second dummy electrode row are electrically connected to each other.

9. The display module according to claim 8, characterized in that, Multiple second dummy electrodes in the same second dummy electrode array are electrically connected to the fixed potential signal line.

10. The display module according to claim 8, characterized in that, The number of the second dummy electrode rows is multiple, and the sum of the number of the first dummy electrode rows and the number of the second dummy electrode rows is three or more. Among the three or more dummy electrode rows, the spacing between two adjacent dummy electrode rows in the second direction is the same.

11. The display module according to claim 10, characterized in that, The first direction is the row direction, and the second direction is the column direction.

12. The display module according to claim 7, characterized in that, A plurality of second dummy electrodes arranged in the same row in the first direction and located in a different row from the second dummy electrode row constitutes a third dummy electrode row, wherein the plurality of second dummy electrodes in the same third dummy electrode row are mutually insulated. At least one of the third dummy electrode rows is located between two adjacent second dummy electrode rows, and / or at least one of the third dummy electrode rows is located between adjacent first dummy electrode rows and second dummy electrode rows.

13. The display module according to claim 12, characterized in that, The number of third dummy electrode rows located between two adjacent second dummy electrode rows is n, and the number of third dummy electrode rows located between adjacent first dummy electrode rows and second dummy electrode rows is n, where n is an integer greater than or equal to 1.

14. The display module according to claim 12, characterized in that, In the first dummy electrode row, the second dummy electrode row, and the third dummy electrode row, the spacing between two adjacent dummy electrode rows in the second direction is the same.

15. The display module according to claim 6, characterized in that, The touch layer includes a first conductive layer and a second conductive layer arranged along the thickness direction of the display panel, the first conductive layer and the second conductive layer being insulated from each other; the first conductive layer includes a first connecting line, and the second conductive layer includes the touch electrode and the dummy electrode. The adjacent first dummy electrodes are connected via the first connecting line, and / or the first dummy electrode and the second dummy electrode are connected via the first connecting line.

16. The display module according to claim 15, characterized in that, The adjacent first dummy electrodes are connected by two first connecting lines along the first direction and / or along the second direction, and the two first connecting lines are symmetrical along the first direction / second direction.

17. The display module according to claim 15, characterized in that, The first conductive layer further includes a first touch trace, which is insulated from the first connecting line; the second conductive layer further includes a second touch trace; and the touch electrode includes a first touch electrode and a second touch electrode. The first touch electrodes that are at least partially adjacent along the second direction are electrically connected through the second touch trace, and the second touch electrodes that are at least partially adjacent along the first direction are electrically connected through the first touch trace.

18. The display module according to claim 17, characterized in that, The orthographic projection of the first connecting line on the substrate does not overlap with the orthographic projection of the first touch trace on the substrate.

19. The display module according to claim 15, characterized in that, Both the touch electrode and the dummy electrode have a mesh structure.

20. The display module according to any one of claims 1 to 19, characterized in that, The first region includes a first sub-display area, which is close to the edge of the second region, and at least a portion of the first dummy electrode is located in the first sub-display area; And / or, The first region includes a second sub-display area, which is located at the center of the display panel along a first direction, and at least a portion of the first dummy electrode is located in the second sub-display area.

21. The display module according to claim 1, characterized in that, The fixed potential signal line includes a DC signal line or a ground signal line.

22. The display module according to claim 21, characterized in that, The DC signal lines include power signal lines.

23. The display module according to claim 22, characterized in that, The power signal lines include positive power signal lines and negative power signal lines.

24. The display module according to claim 1, characterized in that, The display module also includes a non-display area; The touch layer also includes a connection portion electrically connected to the first dummy electrode. The connection portion extends from one end connected to the first dummy electrode to the non-display area and is electrically connected to the fixed potential signal line located on the display panel in the non-display area through a via.

25. The display module according to claim 24, characterized in that, The display panel also includes: A first encapsulation layer is located in the display area and formed on the side of the isolation structure opposite to the substrate; The dam structure is formed in the non-display area; The second encapsulation layer is formed on the side of the first encapsulation layer away from the substrate and is located on the side of the dam structure closer to the second region; The via is located on the side of the dam structure away from the second region.

26. The display module according to claim 25, characterized in that, It also includes a third encapsulation layer, which is located on the side of the dam structure and the second encapsulation layer away from the substrate. The third encapsulation layer is partially located in the display area and partially located in the non-display area.

27. The display module according to claim 26, characterized in that, The first encapsulation layer and the third encapsulation layer comprise inorganic materials, and the second encapsulation layer comprises organic materials.

28. The display module according to claim 1, characterized in that, The display module further includes a non-display area, and the display panel further includes: A pixel definition layer is formed on the side of the first electrode away from the substrate, with part located in the display area and part located in the non-display area. It includes a pixel defining portion and a plurality of pixel openings, wherein the pixel openings are used to expose the first electrode, and the light-emitting unit corresponds to each pixel opening.

29. The display module according to claim 28, characterized in that, The isolation structure is located on the side of the pixel definition layer away from the substrate, and includes a first isolation portion and a second isolation portion. The second isolation portion is located on the side of the first isolation portion away from the substrate, and the orthographic projection of the second isolation portion on the substrate covers the orthographic projection of the first isolation portion on the substrate.

30. The display module according to claim 1, characterized in that, The second electrodes of adjacent light-emitting units are spaced apart, and the second electrodes of adjacent light-emitting units are electrically connected to the isolation structure.

31. The display module according to claim 1, characterized in that, The isolation opening is also located in the first area.

32. The display module according to claim 31, characterized in that, The light-emitting functional layers are located within the isolation openings in the first region and the second region, respectively.

33. The display module according to claim 31, characterized in that, The orthographic projection of the first region on the substrate is within the orthographic projection of the first dummy electrode on the substrate.

34. The display module according to claim 31, characterized in that, The light-transmitting opening is located only in the first region; or, the light-transmitting opening is located in both the first region and the second region.

35. A display device, characterized in that, Includes the display module as described in any one of claims 1-34.

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