Display module and display device

Abstract

The invention 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 a stacked mode, the isolation structure comprises a plurality of isolation openings and light-transmitting openings, at least part of the light-transmitting openings are located in the first area, and at least part of the light-transmitting openings are located in the second area. At least part of the isolation opening is located in the second area, the light-emitting layer is at least formed in the second area on one side of the substrate, the light-emitting layer comprises a plurality of light-emitting units, each light-emitting unit comprises a first electrode, a light-emitting functional layer and a second electrode which are arranged in a stacked mode in the direction away from the substrate, and the light-emitting functional layer is located in the isolation opening; the touch layer is formed on the side, away from the substrate, of the isolation structure and comprises touch electrodes and dummy electrodes which are insulated from each other, the dummy electrodes comprise first dummy electrodes, and at least part of the first dummy electrodes are located in the first area and electrically connected with the fixed potential signal line. The display module provided by the invention 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 particularly relates to a display module and a display device. Background Art

[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 existing display panel seriously affects the performance of the display panel. Summary of the Invention

[0003] Embodiments of this application provide a display module and a display device, which can improve the visual effect consistency in the display area and improve the display quality.

[0004] An embodiment of the first aspect of the embodiments of this application provides a display module. The display module includes a first region and a second region, and the display module includes:

[0005] A display panel, the display panel includes a substrate and an isolation structure arranged in a stacked manner. The isolation structure includes a plurality of isolation openings and light-transmitting openings. At least part of the light-transmitting openings are located in the first region, and at least part of the isolation openings are located in the second region. The display panel further includes a light-emitting layer, and the light-emitting layer is at least formed on the second region on one side of the substrate and includes a plurality of light-emitting units. The light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode arranged in a stacked manner along the direction away from the substrate. The light-emitting functional layer is located in the isolation opening;

[0006] A touch layer formed on the side of the isolation structure away from 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, and at least part 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 electrodes arranged in the same row as the first dummy electrode in the first direction are electrically connected to each other, and the second dummy electrodes arranged in the same row as the first dummy electrode in the first direction are electrically connected to the fixed potential signal line;

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

[0014] A plurality of the second dummy electrodes arranged in the same row in the first direction form a second row of dummy electrodes. The second row of dummy electrodes and the first row of dummy electrodes are different rows of dummy electrodes, and the plurality of the second dummy electrodes in the same second row of dummy electrodes are electrically connected to each other;

[0015] Preferably, the plurality of the second dummy electrodes in the same second row of dummy electrodes are electrically connected to the fixed potential signal line;

[0016] Preferably, the number of the second rows of dummy electrodes is plural, and the sum of the number of the first rows of dummy electrodes and the number of the second rows of dummy electrodes is three or more. Among the three or more rows of dummy electrodes, the distance between two adjacent rows of dummy electrodes 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 the second dummy electrodes arranged in the same row in the first direction and in a different row from the second row of dummy electrodes form a third row of dummy electrodes, and the plurality of the second dummy electrodes in the same third row of dummy electrodes are insulated from each other;

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

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

[0021] Preferably, among the first dummy electrode row, the second dummy electrode row, and the third dummy electrode row, the distance 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, and the first conductive layer and the second conductive layer are insulated from each other; the first conductive layer includes a first connection line, and the second conductive layer includes the touch electrode and the dummy electrode;

[0023] Adjacent first dummy electrodes are connected by the first connection line, and / or the first dummy electrode and the second dummy electrode are connected by the first connection line;

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

[0025] Preferably, the first conductive layer further includes a first touch trace, and the first touch trace is insulated from the first connection 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] At least partially adjacent first touch electrodes along the second direction are electrically connected by the second touch trace, and at least partially adjacent second touch electrodes along the first direction are electrically connected by the first touch trace;

[0027] Preferably, the orthographic projection of the first connection line on the substrate does not overlap with the orthographic projection of the first touch trace on the substrate;

[0028] Preferably, both the touch electrode and the dummy electrode are in 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 region, the first sub-display region is close to the edge of the second region, and at least part of the first dummy electrodes are located in the first sub-display region;

[0030] and / or,

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

[0032] According to any one 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 supply signal line;

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

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

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

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

[0038] A first encapsulation layer, located in the display region and formed on the side of the isolation structure away from the substrate;

[0039] A dam structure, formed in the non-display region;

[0040] A second encapsulation layer, formed on the side of the first encapsulation layer away from the substrate and located on the side of the dam structure close to the second region;

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

[0042] Preferably, a third encapsulation layer is further included, the third encapsulation layer 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 region and partially located in the non-display region;

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

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

[0045] The pixel definition layer is formed on the side of the first electrode facing away from the substrate, partially located in the display area and partially located in the non-display area, and includes a pixel defining portion and a plurality of pixel openings for exposing the first electrode, and the light-emitting units correspond to the pixel openings one by one;

[0046] Preferably, the isolation structure is located on the side of the pixel definition layer facing 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 arranged at intervals, 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 also located in the first region;

[0049] Preferably, the light-emitting functional layer is located in 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 is within the orthographic projection of the first dummy electrode on the substrate;

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

[0052] The embodiment of the second aspect of the present application further provides a display device, including any one of the display modules provided by the first aspect of the present application.

[0053] In the display module provided by the present application, the display module includes a display panel and a touch layer, and the touch layer is disposed on one side of the display panel. Specifically, the display panel includes a substrate, a light-emitting layer, and an isolation structure which are stacked. The light-emitting layer is at least formed in the second region on one side of the substrate 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 which are stacked in a direction away from the substrate. Specifically, light-emitting units may also be formed in the first region, and the present application does not make a special limitation thereon. The isolation structure is formed on one side of the substrate. The isolation structure includes a plurality of isolation openings and light-transmitting openings. The light-emitting functional layer is located within the isolation openings, and at least a part of the light-transmitting openings is located in the first region. The isolation structure can achieve the independence of the light-emitting units, specifically, the independence of the light-emitting functional layer and the second electrode, thereby improving the problem of lateral crosstalk 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 blocking the light-emitting units. At least a part of the light-transmitting openings is 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 away from the substrate and is used to implement the touch function of the display module. The touch layer includes touch electrodes and dummy electrodes. The touch electrodes can be used to implement the touch function. The touch electrodes are insulated from the dummy electrodes. The dummy electrodes include a first dummy electrode which is located in the first region. Since the isolation structure has light-transmitting openings, the shielding effect on the signals in the substrate and the signals in the touch layer is lost at the positions of the light-transmitting openings. Therefore, by disposing the first dummy electrode in the first region, the first dummy electrode can occupy a part of the positions of the touch electrodes in the original first region, so that the touch electrodes are away from the light-transmitting holes, thereby improving the problem of mutual interference between the signals in the substrate and the signals in the touch layer. By electrically connecting the first dummy electrode to the fixed-potential signal line, the shielding effect of the first dummy electrode can be enhanced, thereby improving the yield of the display module. At the same time, by disposing the first dummy electrode in the first region and disposing touch electrodes in the second display area, the visual effect consistency between the first region and the second region can be improved, and the display quality can be enhanced. Description of the Drawings

[0054] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0055] Figure 1 is a top view of a display module provided by an embodiment of the present application;

[0056] Figure 2It is a schematic structural diagram of an isolation structure in a first region of a display module provided by an embodiment of the present application;

[0057] Figure 3 It is a partial cross-sectional view of a first region of a display module provided by an embodiment of the present application;

[0058] Figure 4 It is a schematic structural diagram of an isolation structure in a second region of a display module provided by an embodiment of the present application;

[0059] Figure 5 It is a partial cross-sectional view of a second region of a display module provided by an embodiment of the present application;

[0060] Figure 6 It is a top view of a touch layer in a display module provided by an embodiment of the present application;

[0061] Figure 7 It is a top view of another touch layer in a display module provided by an embodiment of the present application;

[0062] Figure 8 It is Figure 7 an enlarged view of the N region in;

[0063] Figure 9 It is Figure 8 a partial enlarged view in;

[0064] Figure 10 It is a top view of another display module provided by an embodiment of the present application;

[0065] Figure 11 It is a top view of another display module provided by an embodiment of the present application;

[0066] Figure 12 It is a top view of another display module provided by an embodiment of the present application;

[0067] Figure 13 It is a cross-sectional view of a display module provided by an embodiment of the present application;

[0068] Figure 14 It is a top view of a display device provided by an embodiment of the present application.

[0069] In the drawings:

[0070] 1 - Display module; NA - Non - display area; AA1 - First area; AA11 - First sub - display area; AA12 - Second sub - display area; AA2 - Second area; 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 - transmissive 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; 1203 - 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 connection 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 manners

[0071] The features and exemplary embodiments of each aspect of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

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

[0073] The inventor has found through research that the display panel includes light-emitting units, and each light-emitting unit includes an anode and a cathode. A prior art solution has an isolation structure for isolating the light-emitting units. When applied to products with an under-screen photosensor (such as an ambient light sensor, a fingerprint sensor), the isolation structure will block light, and it is necessary to design light-transmitting holes in the isolation structure to improve the light transmittance at the position where the under-screen photosensor is arranged. However, when the isolation structure has openings, parasitic capacitance will be generated between the touch signal and the display signal, thereby causing the problem of radio frequency interference between the signals. Based on the research of the above problems, the inventor provides a display module and a display device to reduce the interference between signals and improve the product yield.

[0074] To better understand the present application, the following will describe in detail the Figures 1 to 14 display module and the display device according to the embodiments of the present application.

[0075] Please refer to Figures 1 to 5 , an embodiment of the present application provides a display module 1. The display module 1 includes a first area AA1 and a second area 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 arranged in a stacked manner. The isolation structure 113 is formed on one side of the substrate 111. The isolation structure 113 includes a plurality of isolation openings 1131 and light-transmitting openings 1132. At least part of the light-transmitting openings 1132 are located in the first area AA1, and at least part of the isolation openings 1131 are located in the second area AA2. The display panel 11 further includes a light-emitting layer 112. The light-emitting layer 112 is at least formed in the second area AA2 on one side of the substrate 111 and includes a plurality of 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 arranged in a stacked manner along the direction away from the substrate 111. The light-emitting functional layer 1122 is located in the isolation opening 1131; the 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 part of the first dummy electrode 1221 is located in the first area AA1, and the first dummy electrode 1221 is electrically connected to the fixed potential signal line 1111.

[0076] In the display module 1 provided by the present application, the display module 1 includes a display panel 11 and a touch layer 12, and the touch layer 12 is disposed on one side of the display panel 11. Among them, the display panel 11 includes a substrate 111, a light-emitting layer 112, and an isolation structure 113 which are stacked. The light-emitting layer 112 is at least formed in a second region AA2 on one side of the substrate 111, and includes a plurality of light-emitting units 1120. The light-emitting unit 1120 includes a first electrode 1121, a light-emitting functional layer 1122, and a second electrode 1123 which are stacked in a direction away from the substrate 111. Specifically, the light-emitting units 1120 may also be formed in the first region AA1, and the present application does not make a special limitation thereto. The isolation structure 113 is formed on one side of the substrate 111. The isolation structure 113 includes a plurality of isolation openings 1131 and light-transmitting openings 1132. The light-emitting functional layer 1122 is located in the isolation openings 1131, and at least part of the light-transmitting openings 1132 is located in the first region AA1. The isolation structure 113 can realize the independence of the light-emitting units 1120 from each other, and specifically can realize the independence of the light-emitting functional layer 1122 and the second electrode 1123 from each other, thereby improving the problem of lateral crosstalk between the light-emitting units 1120 and enhancing the display effect of the display panel 11. The isolation openings 1131 are 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 openings 1132 is located in the first region AA1, so that the light transmittance of the first region AA1 can be improved. 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 realize the touch function. The touch electrode 121 is insulated from the dummy electrode 122. The dummy electrode 122 includes a first dummy electrode 1221. The first dummy electrode 1221 is located in the first region AA1. Since the isolation structure 113 is provided with light-transmitting openings 1132, the shielding effect on the signals in the substrate 111 and the signals in the touch layer 12 is lost at the positions of the light-transmitting openings 1132. Therefore, by providing the first dummy electrode 1221 in the first region AA1, the first dummy electrode 1221 can occupy a part of the position of the touch electrode 121 in the original first region AA1, so as to make the touch electrode 121 away from the light-transmitting holes, thereby improving the problem of mutual interference between the signals in the substrate 111 and the signals in 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 enhanced, and thus the yield of the display module 1 can be improved. 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 region AA, the visual effect consistency between the first region AA1 and the second region AA2 can be improved, and the display quality can be enhanced.

[0077] In the display module 1 provided by the present application, it includes a first region AA1 and a second region AA2, where the light transmittance of the first region AA1 can be higher than that of the second region AA2. Specifically, the first region AA1 can be a region where sensors are arranged. For example, a camera module, a fingerprint recognition module, etc. The high light transmittance of the first region AA1 can provide better working conditions for the photosensitive device to improve the performance of the photosensitive device. In the above embodiment, both the first region AA1 and the second region AA2 can have a display function. Specifically, the isolation structures 113 of the first region AA1 and the second region AA2 both have a plurality of isolation openings 1131, and light-emitting units are arranged in 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. Among them, the light-transmitting opening 1132 can be only arranged on the isolation structure 113 of the first region AA1, or the light-transmitting opening 1132 can be arranged on the isolation structures 113 of the first region AA1 and the second region AA2.

[0078] Or the second region AA2 has a display function, and the first region AA1 does not have a display function. Specifically, the isolation structures 113 of the first region AA1 and the second region AA2 both have a plurality of isolation openings 1131, and light-emitting units are arranged in the isolation openings 1131 of the second region AA2. There are no light-emitting units in the isolation openings 1131 of the first region AA1, or the light-emitting units in the isolation openings 1131 of the first region AA1 do 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 only located in the second region AA2 and not in the first region AA1, and only the first dummy electrode 1221 can be arranged in the first region AA1. When the first region AA1 is large, a plurality of first dummy electrodes 1221 can be arranged, or the first dummy electrode 1221 and the touch electrode 121 can be arranged simultaneously, still maintaining the touch function of the first region AA1, thereby improving the user experience; at this time, the first dummy electrode 1221 can improve the shielding effect at some positions in the first region AA1.

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

[0081] In the above embodiment, the dummy electrode 122 also includes a second dummy electrode 1222, and the second dummy electrode 1222 is located in the second region AA2. The second dummy electrode 1222 can be electrically connected to the fixed potential signal line 1111, or can be not connected to any potential. The present application does not make special limitations on this.

[0082] In the above embodiments, on the one hand, the arrangement of the second dummy electrode 1222 can further reduce the visual effect 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 effect, making the signals in the touch electrode 121 more stable.

[0083] In a feasible embodiment, as Figure 6 shown, the first dummy electrode 1221 and the second dummy electrode 1222 are respectively arranged surrounded by different touch electrodes 121. That is, one touch electrode 121 surrounds one first dummy electrode 1221, and the touch electrode 121 surrounding the first dummy electrode 1221 does not surround the second dummy electrode 1222; one touch electrode 121 surrounds one second dummy electrode 1222, and the touch electrode 121 surrounding the second dummy electrode 1222 does not surround the first dummy electrode 1221; the first dummy electrode 1221 and the second dummy electrode 1222 are separated by the touch electrode 121. Thus, 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 are achieved. The second dummy electrode 1222 can shield noise at the middle position of the touch electrode 121, thereby improving the stability of the signals in the touch electrode 121.

[0084] In a feasible embodiment, as Figure 7 、 Figure 8 and Figure 9 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 a 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 a curve. Thus, the boundary line between the first dummy electrode 1221 and the touch electrode 121 and the boundary line between the second dummy electrode 1222 and the touch electrode 121 are not easily recognizable by the naked eye, thereby improving the display uniformity, enhancing the visual display effect of the product, and improving the user experience.

[0085] In a feasible embodiment, the orthographic projection area of the second dummy electrode 1222 on the substrate 111 is less than or equal to the orthographic 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 be larger, the shielding range can be improved, thereby improving the signal interference transmitted by the inner diameter light-transmitting holes in the first region AA1. The second dummy electrode 1222 in the second region AA2 is set to be smaller, which can increase the area ratio of the touch electrode 121, thereby improving the touch quality.

[0087] In a feasible embodiment, 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 embodiment, 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 transferred. Specifically, it can be transferred to the edge position 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 a feasible embodiment, as Figure 6 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, and 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 at a position away from the edge in the display panel 11. 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, and the second dummy electrode 1222 is electrically connected to the fixed potential signal line 1111, so as to realize the indirect electrical connection between the first dummy electrode 1221 and the fixed potential signal line 1111, which helps to reduce the connection difficulty between the first dummy electrode 1221 and the fixed potential signal line 1111 and reduce the adverse effect on the display quality of the display panel 11.

[0091] Specifically, the touch electrodes 121 can be arranged in the row and column directions. The above first direction x can be the row direction or the column direction, so as to facilitate the electrical connection of 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 a feasible embodiment, 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 form the first dummy electrode row 1201; multiple second dummy electrodes 1222 arranged in the same row in the first direction x form 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. Multiple second dummy electrodes 1222 in the same second dummy electrode row 1202 are electrically connected to each other.

[0093] In the above embodiment, as Figure 10 shown, the display panel 11 includes multiple dummy electrode rows 120. The multiple dummy electrode rows 120 can be arranged along the second direction y, and the second direction y is perpendicular to the first direction x.

[0094] The multiple dummy electrode rows 120 include 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 the first direction x. The second dummy electrode row 1202 includes second dummy electrodes 1222 arranged and electrically connected along the second direction y. In the first dummy electrode row 1201, the first dummy electrode 1221 can transfer the position electrically connected to the fixed potential signal line 1111 to the edge of the display panel 11 through multiple second dummy electrodes 1222 that are electrically connected to each other. The second dummy electrode row 1202 includes multiple second dummy electrodes 1222 electrically connected along the first direction x. Therefore, the consistency between the position where the second dummy electrode row 1202 is set and the position where the first dummy electrode row 1201 is set in the display panel 11 can be maintained, thereby further improving the display quality of the display panel 11.

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

[0096] In a feasible embodiment, multiple second dummy electrodes 1222 in the same second dummy electrode row 1202 are electrically connected to the fixed potential signal line 1111. Thereby, the shielding effect of the second dummy electrode 1222 on noise can be further improved to enhance the signal stability of the touch electrode 121.

[0097] In a feasible embodiment, as Figure 10As shown, the number of the second dummy electrode rows 1202 is multiple, and 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 distance between two adjacent dummy electrode rows 120 in the second direction y is the same.

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

[0099] In the above embodiment, as Figure 10 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 distance 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 along the second direction y in the display panel 11 with the same distance, thereby further improving the display uniformity of the entire display panel 11.

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

[0101] In a feasible embodiment, as Figure 11 shown, a plurality of second dummy electrodes 1222 arranged in the same row in the first direction x and located in different rows from the second dummy electrode rows 1202 are the third dummy electrode rows 1203, and the plurality of second dummy electrodes 1222 in the same third dummy electrode row 1203 are insulated from each other. That is, the dummy electrode rows 120 include the first dummy electrode rows 1201, the second dummy electrode rows 1202, and the third dummy electrode rows 1203. The first dummy electrode rows 1201 include the first dummy electrodes 1221 and the second dummy electrodes 1222 arranged and electrically connected along the first direction x. The second dummy electrode rows 1202 include the second dummy electrodes 1222 arranged and electrically connected along the second direction y. The third dummy electrode rows 1203 include a plurality of second dummy electrodes 1222 arranged and insulated from each other along the first direction x. The first dummy electrode rows 1201, the second dummy electrode rows 1202, and the third dummy electrode rows 1203 are insulated from each other. On the one hand, the third dummy electrode rows 1203 can omit the electrical connection between the second dummy electrodes 1222 adjacent in 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 in the second area AA2, and keep the display consistency in the display panel 11 while some second dummy electrodes 1222 are insulated from each other.

[0102] In a feasible implementation manner, 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 an adjacent first dummy electrode row 1201 and second dummy electrode row 1202.

[0103] Specifically, the second dummy electrode row 1202 and the third dummy electrode row 1203 may be alternately arranged along the second direction y. The number of the first dummy electrode rows 1201 is one row and is interspersed between an adjacent row of second electrodes 1123 and a row of third electrode rows. Alternatively, the second dummy electrode row 1202 and the third dummy electrode row 1203 may be alternately arranged along the second direction y. The number of the first dummy electrode rows 1201 is one row and replaces the position of a row of second dummy electrode rows 1202 or a row of third dummy electrode rows 1203, that is, both sides of the first dummy electrode 1221 along the second direction y are adjacent to the second dummy electrode row 1202, or are respectively adjacent to the third dummy electrode row 1203. Thus, a uniform display effect is achieved.

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

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

[0106] In a feasible implementation manner, as Figure 11 shown, among the first dummy electrode row 1201, the second dummy electrode row 1202, and the third dummy electrode row 1203, the distance between two adjacent dummy electrode rows 120 in the second direction y is the same. To improve the display uniformity of the display panel 11 along the second direction y.

[0107] In a feasible implementation manner, 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, and the first conductive layer 123 and the second conductive layer 124 are insulated from each other; the first conductive layer 123 includes a first connection line 1232, and the second conductive layer 124 includes touch electrodes 121 and dummy electrodes 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. The present application does not make a special limitation thereto.

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

[0110] In the above-described embodiment, adjacent first dummy electrodes 1221 are connected by a first connection line 1232, and / or the first dummy electrode 1221 and the second dummy electrode 1222 are connected by a first connection line 1232. Since some of the touch electrodes 121 are disposed around the first dummy electrode 1221 and some of the touch electrodes 121 are disposed around the second dummy electrode 1222, the touch electrodes 121 and the dummy electrodes 122 are disposed on the same layer, and the touch electrodes 121 and the first trace are disposed on different layers. Therefore, when the first trace connects adjacent first dummy electrodes 1221, or adjacent first dummy electrodes 1221 and second dummy electrodes 1222, it is not easy to interfere with the touch electrodes 121 during wiring. A via 13 passing through the insulating layer 19 is required between the first connection line 1232 and the dummy electrode 122 for electrical connection, that is, there is an insulating layer 19 between the first conductive layer 123 and the second conductive layer 124.

[0111] In the above-described embodiment, adjacent first dummy electrodes 1221 along the first direction x and / or along the second direction y are connected by two first connection lines 1232, and the two first connection lines 1232 are symmetric along the first direction x / second direction y. On the one hand, using two first connection lines 1232 to implement the electrical connection layer of adjacent two 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 connection lines 1232, and these two first connection lines 1232 are symmetric about the second direction y; two adjacent second dummy electrodes 1222 along the second direction y are connected by a first connection line 1232, and these two first connection lines 1232 are symmetric about the first direction x, thereby improving the symmetry in vision, reducing the abrupt visual effect, and at the same time facilitating the realization of the same resistance of the two first connection lines 1232 and improving the electrical connection effect.

[0112] In a feasible embodiment, as Figure 7 and Figure 12 shown, the first conductive layer 123 further includes a first touch trace 1231, the first touch trace 1231 is insulated from the first connection line 1232, the second conductive layer 124 further includes a second touch trace 1241, and the touch electrode 121 includes a first touch electrode 1211 and a second touch electrode 1212.

[0113] In a feasible implementation, the orthographic projection of the first connection 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 connection line 1232 are on the same layer, and a preset distance is provided between the first touch trace 1231 and the first connection line 1232 to achieve mutual insulation between the two.

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

[0115] In the above implementation, the first touch electrodes 1211 are arranged in an array, at least some of the first touch electrodes 1211 that are 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 at least some of the second touch electrodes 1212 that are 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 that penetrates the insulating layer 19.

[0117] In the above implementation, both the touch electrode 121 and the dummy electrode 122 are in a mesh structure. Thereby, it is possible to avoid covering 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 ensure good display effects 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 ensure good display effects and light transmittance.

[0120] In a feasible implementation, as Figure 12 shown, the first region AA1 includes a first sub-display region AA11. The first sub-display region AA11 is close to the edge of the second region AA2, and at least some of the first dummy electrodes 1221 are located in the first sub-display region AA11;

[0121] and / or,

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

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

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

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

[0126] In a feasible embodiment, 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 for the dummy electrode 122, so that its potential will not be affected by the coupling of the touch electrode 121 and / or the signal lines 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 affected by the coupling of the touch electrode 121 and / or the signal lines in the substrate 111.

[0129] Providing a DC signal for the dummy electrode 122 through the DC signal line in the substrate 111 can avoid adding new DC signal lines, which helps to simplify the power supply lines in the display panel 11.

[0130] Specifically, the DC signal line may include a power supply signal line.

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

[0132] Among them, the positive power signal line can be a high-level signal line (ELVDD), and the negative power 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 a feasible implementation manner, as Figure 12 shown, the display module 1 further includes a non-display area NA;

[0134] The touch layer 12 further 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 implementation manner, the non-display area NA can be arranged around at least part of the edge of the second area AA2.

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

[0137] In a feasible implementation manner, as Figure 13 shown, the display panel 11 further 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 area AA2; among them, the via 13 is located on the side of the dam structure 16 away from the second area AA2.

[0138] In the above implementation manner, by setting the dam structure 16 in the non-display area NA, the second encapsulation layer 17 can be blocked. The material of the second encapsulation layer 17 is often an organic material, and the organic material has strong fluidity. Blocking it through the dam structure 16 can prevent its diffusion from affecting its own film formation uniformity and the preparation of other film layers.

[0139] In a feasible implementation, as Figure 13 shown, it further includes a third encapsulation layer 18, and the third encapsulation layer 18 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] The organic materials and inorganic materials are arranged at intervals to achieve a better encapsulation effect. Among them, the first encapsulation layer 15 is an inorganic material, and the inorganic material has a good effect of isolating water and oxygen, and directly contacts the isolation structure 113, etc. to realize the encapsulation of each light-emitting unit 1120. The second encapsulation layer 17 uses organic materials, and the organic materials have strong fluidity and can provide a flat surface for the third encapsulation layer 18. The third encapsulation layer 18 is an inorganic material, and the inorganic material has a good effect of isolating water and oxygen, which can further improve the encapsulation reliability.

[0142] In a feasible implementation, as Figure 13 shown, the display panel 11 further includes a pixel definition layer 14. The pixel definition layer 14 is formed on the side of the first electrode 1121 away from the substrate 111, partially located in the display area and partially located in the non-display area NA, and includes pixel defining portions and a plurality of pixel openings 141. The pixel openings 141 are used to expose the first electrode 1121, and the light-emitting units 1120 correspond to the pixel openings 141 one by one.

[0143] In the above implementation, 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 red light-emitting units 1120, the second pixel opening 141 is used to form green light-emitting units 1120, and the third pixel opening 141 is used to form blue light-emitting units 1120. When the display panel 11 further includes white light-emitting units 1120, the pixel definition layer 14 may further include a fourth pixel opening 141 for forming white light-emitting units 1120.

[0144] In the above implementation, 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 orthographic projection of the second isolation portion 1134 on the substrate 111 covers the orthographic projection of the first isolation portion 1133 on the substrate 111.

[0145] By providing the isolation structure 113, the separate preparation and independence of the light-emitting units 1120 of different colors can be achieved. Specifically, the continuous setting of the light-emitting functional layers 1122 between adjacent light-emitting units 1120 will cause lateral crosstalk, resulting in mis-lighting of adjacent light-emitting units 1120, etc., affecting the display quality. By separately providing each light-emitting unit 1120, the problem of lateral crosstalk between adjacent light-emitting units 1120 can be improved, and the display quality of the display panel 11 can be enhanced. Moreover, when the display panel 11 includes the isolation structure 113, the light-emitting units 1120 of each color can be prepared as a whole layer first and then patterned, thereby omitting the use of a mask plate to reduce costs. The light-emitting units 1120 of different colors are prepared in different orders. During the patterning preparation process of the later-prepared light-emitting units 1120, isolation can be performed 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 arranged at intervals, and the second electrodes 1123 of adjacent light-emitting units 1120 are electrically connected to the isolation structure 113.

[0147] In the above-described embodiment, 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 the present application, the electrical connection of each second electrode 1123 is achieved through the isolation structure 113, and the connection reliability is strong, thereby realizing synchronous power supply to each second electrode 1123 and simplifying the number of power supply lines and the manufacturing process.

[0148] The present application also provides a display device 2. As Figure 14 shown, the display device 2 includes any one of the display modules 1 provided in the above-described embodiment. The display device 2 has better display uniformity and better display quality.

[0149] The display device 2 can be a mobile terminal such as a mobile phone or a laptop computer, or a fixed terminal such as a television or a computer monitor, or can also be a wearable device such as a watch, etc., and the present application does not make a special limitation.

[0150] In accordance with the embodiments of the present application as described above, these embodiments do not elaborate on all details and do not limit the invention to only the specific embodiments. Obviously, many modifications and variations can be made based on the above description. The present specification selects and specifically describes these embodiments to better explain the principle and practical application of the present application, so that those skilled in the relevant technical field can make good use of the present application and its modifications based on the present application. The present application is only limited 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: a display panel, the display panel includes a substrate and an isolation structure arranged in a stacked manner, the isolation structure includes a plurality of isolation openings and light-transmitting openings, at least part of the light-transmitting openings are located in the first region, at least part of the isolation openings are located in the second region, the display panel further includes a light-emitting layer, the light-emitting layer is at least formed in the second region on one side of the substrate, includes a plurality of light-emitting units, and the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode arranged in a stacked manner along a direction away from the substrate, the light-emitting functional layer is located in the isolation opening; a touch layer formed on a side of the isolation structure away from the substrate, the touch layer includes touch electrodes and dummy electrodes, the touch electrodes are insulated from the dummy electrodes, the dummy electrodes include a first dummy electrode, at least part of the first dummy electrode is located in the first region, and 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 further includes a second dummy electrode located in the second region; Preferably, the first dummy electrode and the second dummy electrode are respectively surrounded by different touch electrodes; Preferably, a boundary line between the first dummy electrode and the touch electrodes surrounding the first dummy electrode extends along a broken line or a curve, and a boundary line between the second dummy electrode and the touch electrodes surrounding the second dummy electrode extends along a broken line or a curve; Preferably, a projected area of the second dummy electrode on the substrate is less than or equal to a projected area of the first dummy electrode on the substrate.

3. 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; Preferably, the first dummy electrode and the second dummy electrodes arranged in the same row as the first dummy electrode in a first direction are electrically connected to each other, and the second dummy electrodes arranged in the same row as the first dummy electrode in the first direction are electrically connected to the fixed potential signal line; Preferably, the first dummy electrode and the second dummy electrodes arranged in the same row as the first dummy electrode in the first direction are a first row of dummy electrodes; A plurality of the second dummy electrodes arranged in the same row in the first direction are a second row of dummy electrodes, the second row of dummy electrodes and the first row of dummy electrodes are different rows of dummy electrodes, and a plurality of the second dummy electrodes in the same second row of dummy electrodes are electrically connected to each other; Preferably, a plurality of the second dummy electrodes in the same second row of dummy electrodes are electrically connected to the fixed potential signal line; Preferably, the number of the second dummy electrode rows is plural, 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 distance between two adjacent dummy electrode rows in the second direction is the same; Preferably, the first direction is the row direction, and the second direction is the column direction; Preferably, a plurality of the second dummy electrodes that are arranged in the same row in the first direction and are in different rows from the second dummy electrode rows are the third dummy electrode rows, and the plurality of the second dummy electrodes in the same third dummy electrode row are insulated from each other; 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 an adjacent first dummy electrode row and a second dummy electrode row; Preferably, the number of the third dummy electrode rows located between two adjacent second dummy electrode rows is n, and the number of the third dummy electrode rows located between an adjacent first dummy electrode row and a second dummy electrode row is n, where n is an integer greater than or equal to 1; Preferably, among the first dummy electrode row, the second dummy electrode row, and the third dummy electrode row, the distance between two adjacent dummy electrode rows in the second direction is the same.

4. The display module according to claim 3, wherein, the touch control layer includes a first conductive layer and a second conductive layer arranged along the thickness direction of the display panel, and the first conductive layer and the second conductive layer are insulated from each other; the first conductive layer includes a first connection line, and the second conductive layer includes the touch control electrode and the dummy electrode; adjacent first dummy electrodes are connected through the first connection line, and / or the first dummy electrode and the second dummy electrode are connected through the first connection line; Preferably, adjacent first dummy electrodes along the first direction and / or along the second direction are connected through two first connection lines, and the two first connection lines are symmetric along the first direction / second direction; Preferably, the first conductive layer further includes a first touch control trace, and the first touch control trace is insulated from the first connection line. The second conductive layer further includes a second touch control trace, and the touch control electrode includes a first touch control electrode and a second touch control electrode; At least partially adjacent first touch control electrodes along the second direction are electrically connected through the second touch control trace, and at least partially adjacent second touch control electrodes along the first direction are electrically connected through the first touch control trace; Preferably, the orthographic projection of the first connection line on the substrate does not overlap with the orthographic projection of the first touch control trace on the substrate; Preferably, both the touch control electrode and the dummy electrode are in a mesh structure.

5. The display module according to any one of claims 1 to 4, wherein, the first area includes a first sub-display area, the first sub-display area is close to the edge of the second area, and at least part of the first dummy electrode is located in the first sub-display area; and / or, The first region includes a second sub-display region, the second sub-display region is located at the center of the display panel along a first direction, and at least a part of the first dummy electrode is located in the second sub-display region.

6. The display module according to claim 1, wherein, the fixed potential signal line includes a DC signal line or a ground signal line; Preferably, the DC signal line includes a power supply signal line; Preferably, the power supply signal line includes a positive power supply signal line and a negative power supply signal line.

7. The display module according to claim 1, wherein, the display module further includes a non-display region; The touch layer further includes a connection portion electrically connected to the first dummy electrode, the connection portion extends from one end connecting the first dummy electrode to the non-display region, and is electrically connected to the fixed potential signal line located on the display panel through a via hole in the non-display region.

8. The display module according to claim 7, wherein, the display panel further includes: a first encapsulation layer, located in the display region and formed on a side of the isolation structure away from the substrate; a dam structure, formed in the non-display region; a second encapsulation layer, formed on a side of the first encapsulation layer away from the substrate and located on a side of the dam structure close to the second region; wherein, the via hole is located on a side of the dam structure away from the second region; Preferably, a third encapsulation layer is further included, the third encapsulation layer is located on a 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 region and partially located in the non-display region; Preferably, the first encapsulation layer and the third encapsulation layer include inorganic materials, and the second encapsulation layer includes organic materials.

9. The display module according to claim 1, wherein, the display panel further includes: a pixel definition layer, formed on a side of the first electrode away from the substrate, partially located in the display region and partially located in the non-display region, including pixel defining portions and a plurality of pixel openings for exposing the first electrode, and the light-emitting units correspond to the pixel openings one by one; Preferably, the isolation structure is located on a side of the pixel definition layer away from the substrate, includes a first isolation portion and a second isolation portion, the second isolation portion is located on a side of the first isolation portion away from the substrate, and a positive projection of the second isolation portion on the substrate covers a positive projection of the first isolation portion on the substrate; Preferably, the second electrodes of adjacent light-emitting units are arranged at intervals, and the second electrodes of adjacent light-emitting units are electrically connected to the isolation structure.

10. The display module according to claim 1, wherein, the isolation opening is further located in the first region; Preferably, the light-emitting functional layer is respectively located in the isolation opening in the first region and the isolation opening in the second region; Preferably, a positive projection of the first region on the substrate is within a positive projection of the first dummy electrode on the substrate; Preferably, the light-transmitting opening is only located in the first region; Alternatively, the light-transmitting opening is located in the first region and the second region.

11. A display device, characterized in that, it includes the display module according to any one of claims 1-10.

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