Display module and display device

Abstract

The application provides a display module and a display device, and solves the problem of low reliability of display products in the prior art. The display module comprises a display panel, the display panel has a display area and a frame area surrounding the display area at least partially; the display panel comprises: a substrate; a plurality of inorganic layers stacked on one side of the substrate, the plurality of inorganic layers are provided with at least one groove, the groove penetrates at least one inorganic layer in the thickness direction of the substrate, and the groove is located in the frame area; a first encapsulation layer located on the side of the plurality of inorganic layers away from the substrate and filling part of the space of the groove; and a second encapsulation layer located on the side of the first encapsulation layer away from the substrate, part of the second encapsulation layer is embedded in the space of the groove which is not filled by the first encapsulation layer.

Description

Technical Field

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

[0002] With the rapid development of display technology, consumers and terminal companies are demanding increasingly narrower bezels for their products, as narrow bezels allow for a larger display area. However, during reliability testing of narrow bezel products, film layer separation can occur, leading to a lower yield rate for display products. Summary of the Invention

[0003] In view of this, embodiments of this application provide a display module and a display device, which solve the problem of low reliability of display products in the prior art.

[0004] This application provides a display module, including a display panel having a display area and a border area at least partially surrounding the display area. The display panel includes: a substrate; multiple inorganic layers stacked on one side of the substrate, each inorganic layer having at least one groove extending through the at least one inorganic layer along the thickness direction of the substrate, the groove being located in the border area; a first encapsulation layer located on the side of the multiple inorganic layers facing away from the substrate and filling a portion of the space in the groove; and a second encapsulation layer located on the side of the first encapsulation layer facing away from the substrate, a portion of the second encapsulation layer being embedded in the space not filled by the first encapsulation layer within the groove. The advantage is that by creating grooves in the inorganic layers of the display panel and setting the first and second encapsulation layers to be jointly embedded within the grooves, the bonding force between the inorganic layers, the first encapsulation layer, and the second encapsulation layer is improved, structural stability is enhanced, the probability of film layer separation is reduced, thereby improving the yield of the display panel.

[0005] In conjunction with the first aspect, in some possible implementations, the display module further includes at least one dam located between the plurality of inorganic layers and the first encapsulation layer, and situated within the border region; the orthographic projection of the recess onto the substrate lies between the edge line of the orthographic projection of the dam onto the substrate and the orthographic projection of the first encapsulation layer onto the substrate; preferably, the display panel further includes a bonding area located on the side of the border region away from the display area, and the recess is situated within the border region between the bonding area and the display area; or, the recess surrounds the display area; preferably, at least one dam comprises a first dam and a second dam, the first dam surrounding the display area, and the second dam... The dam surrounds the first dam; preferably, the height of the second dam is greater than that of the first dam in the thickness direction of the substrate; preferably, the display panel further includes a planarization layer, a pixel definition layer and a support layer stacked in a direction away from the substrate, the planarization layer, the pixel definition layer and the support layer are located between multiple inorganic layers and the first encapsulation layer, and are located in the display area; the dam includes multiple stacked sub-parts, the sub-parts are in the same layer and made of the same material as one of the planarization layer, the pixel definition layer and the support layer; preferably, the display panel further includes multiple light-emitting devices, the pixel definition layer encloses multiple pixel openings, and the light-emitting devices are located within the pixel openings.

[0006] In conjunction with the first aspect, in some possible implementations, the display module further includes touch traces located on the side of the second encapsulation layer away from the substrate, wherein the orthographic projection of the touch traces on the substrate overlaps with the orthographic projection of the groove on the substrate; preferably, the display panel further includes conductive portions and insulating portions sequentially stacked on the side of at least a plurality of inorganic layers away from the substrate, both the conductive portions and the insulating portions being located on the side of the groove away from the display area; the insulating portion includes a first via, into which the touch traces extend and contact the conductive portion; preferably, the display panel further includes a protective layer, at least a portion of which is located in the bezel area; in the bezel area, the protective layer is located between the insulating portion and the conductive portion, and the protective layer includes a second via, the second via... The first via is connected to the first via, and the orthographic projection of the first via on the substrate is within the orthographic projection range of the second via on the substrate; preferably, the display panel further includes a planarization layer located on the side of the protective layer away from the substrate and located in the display area; the insulating portion and the planarization layer are of the same layer and the same material; preferably, the protective layer includes a patterned surface that contacts the first encapsulation layer; preferably, the orthographic projection of at least a portion of the patterned surface on the substrate surrounds the orthographic projection of the groove on the substrate; preferably, at least a portion of the patterned surface is located between adjacent dams; preferably, the plurality of inorganic layers further includes at least one of an interlayer insulating layer, a capacitor inorganic layer, a gate inorganic layer, and a barrier layer stacked sequentially along the direction close to the substrate.

[0007] In conjunction with the first aspect, in some possible implementations, the display module further includes a first adhesive layer located between the touch traces and the second encapsulation layer, and situated in the bezel area; preferably, the display panel further includes at least one dam located between the plurality of inorganic layers and the first encapsulation layer, and situated on the side of the recess near the display area; the orthographic projection of the first adhesive layer on the substrate covers the orthographic projection of the dam on the substrate; preferably, the edge of the orthographic projection of the first adhesive layer on the substrate away from the display area does not extend beyond the end of the orthographic projection of the touch traces on the substrate away from the display area; preferably, the display panel further includes a third encapsulation layer located between the first encapsulation layer and the second encapsulation layer. The first adhesive layer is located between the first and second encapsulation layers, and on the side of the dam closer to the display area. The orthographic projection of the first adhesive layer on the substrate partially overlaps with the orthographic projection of the third encapsulation layer on the substrate. Preferably, the display module further includes a second adhesive layer located on the side of the touch traces away from the substrate and in the bezel area. Preferably, the display module further includes a third adhesive layer located on the side of the second adhesive layer away from the substrate and extending from the display area to the bezel area. Preferably, the display module further includes a touch metal layer located between the second encapsulation layer and the third adhesive layer, and in the display area. Preferably, the display module further includes a polarizer located on the side of the third adhesive layer away from the substrate. The advantage of having a first adhesive layer is that, on the one hand, the first adhesive layer acts as a planarizing agent, reducing the height difference below the first adhesive layer in the bezel area. On the other hand, the first adhesive layer separates the touch traces and the second encapsulation layer, reducing the degree of mutual negative influence between the two during reliability testing. The mutual negative influence mentioned here refers to the fact that, when bent, the touch traces are subjected to bending stress and move away from the display area. During reliability testing, the second encapsulation layer moves towards the display area along with the polarizer. That is, the touch traces and the second encapsulation layer move in opposite directions, which can cause film separation due to stress.

[0008] In conjunction with the first aspect, in some possible implementations, at least one groove includes multiple grooves arranged sequentially in the direction from the display area to the border area; preferably, the widths of the different grooves are equal in the direction from the display area to the border area; or, the widths of the different grooves are unequal; preferably, the depths of the different grooves are equal in the thickness direction of the substrate; or, the depths of the different grooves are unequal; preferably, on the plane formed by the first direction from the display area to the border area and the second direction perpendicular to the substrate, the cross-sectional shape of the groove includes any one of a rectangle, a regular trapezoid, an inverted trapezoid, and a semicircle.

[0009] In conjunction with the first aspect, in some possible implementations, the display panel further includes at least one dam located between multiple inorganic layers and the first encapsulation layer, and located on the side of the recess near the display area; the display module further includes touch traces located on the side of the second encapsulation layer away from the substrate, the orthographic projection of the touch traces on the substrate overlapping the orthographic projection of the dam on the substrate; the touch traces include a first portion and a second portion alternately arranged along the extension direction of the touch traces, at least a portion of the first portion overlapping the orthographic projection of the dam on the substrate, and / or, at least a portion of the first portion overlapping the edge of the orthographic projection of the second encapsulation layer on the substrate and the edge of the orthographic projection of the first encapsulation layer on the substrate; at least a portion of the first portion has a linewidth greater than the linewidth of the second portion.

[0010] In conjunction with the first aspect, in some possible implementations, at least one dam includes a plurality of dams, each dam's orthographic projection on the substrate overlapping with the orthographic projection of a first part on the substrate; preferably, the edge of the orthographic projection of the first encapsulation layer on the substrate and the edge of the orthographic projection of the second encapsulation layer on the substrate overlap with the orthographic projection of the same first part on the substrate.

[0011] In conjunction with the first aspect, in some possible implementations, in the width direction of the dam, the length of the first part is greater than or equal to the width of the dam overlapping with the orthographic projection of the first part on the substrate; preferably, at least one dam includes multiple dams, the widths of different dams being equal or unequal; preferably, in the width direction of the dam, the lengths of different first parts are equal; preferably, in the extension direction of the dam, the spacing between the second parts of adjacent touch traces is greater than the line width of the second part; preferably, the shape of the orthographic projection of the first part on the substrate includes any one of a circle, an ellipse, a trapezoid, a rhombus, and a regular polygon.

[0012] In conjunction with the first aspect, in some possible implementations, the first part includes a via that extends through the touch trace along the thickness direction of the substrate; preferably, the orthographic projection shape of the via on the substrate is the same as the orthographic projection shape of the first part on the substrate; preferably, the orthographic projection shape of the via on the substrate includes any one of a circle, an ellipse, a trapezoid, a rhombus, or a regular polygon.

[0013] In conjunction with the first aspect, in some possible implementations, the display module further includes a polarizer located on the side of the second encapsulation layer away from the substrate; the edge of the orthographic projection of the polarizer onto the substrate is located on the side of the orthographic projection of the groove onto the substrate away from the display area; preferably, the edge of the orthographic projection of the polarizer onto the substrate is located between the edges of the orthographic projection of the groove onto the substrate and the orthographic projection of the second encapsulation layer onto the substrate; or, the display module further includes touch traces located on the side of the second encapsulation layer facing away from the substrate; the display panel further includes conductive portions and insulating portions, which are sequentially stacked on at least a portion of the inorganic layers facing away from the substrate. On one side of the substrate, the insulating portion includes a first via, and the touch trace extends into the first via and contacts the conductive portion; the edge of the orthographic projection of the polarizer on the substrate is located between the orthographic projection of the second encapsulation layer on the substrate and the edge of the orthographic projection of the insulating portion on the substrate near the display area; preferably, the distance between the edge of the orthographic projection of the polarizer on the substrate and the edge of the orthographic projection of the second encapsulation layer on the substrate is greater than or equal to 60 micrometers; preferably, the distance between the edge of the orthographic projection of the polarizer on the substrate and the edge of the orthographic projection of the second encapsulation layer on the substrate is greater than or equal to 80 micrometers and less than or equal to 120 micrometers.

[0014] In conjunction with the first aspect, in some possible implementations, the orthographic projection of the first encapsulation layer on the substrate lies within the orthographic projection range of the second encapsulation layer on the substrate.

[0015] A second aspect of this application provides another display module, comprising: a display panel having a display area and a border area at least partially surrounding the display area; the display panel including a substrate and at least one dam, the dam being located on one side of the substrate and within the border area; and touch traces located on the side of the dam facing away from the substrate, the orthographic projection of the touch traces on the substrate overlapping the orthographic projection of the dam on the substrate; wherein the touch traces include alternately arranged first and second portions, at least a portion of the first portion overlapping the orthographic projection of the dam on the substrate, and at least a portion of the first portion having a linewidth greater than the linewidth of the second portion. The advantage is that by setting the linewidth of the first portion to be greater than the linewidth of the second portion, the risk of damage to the touch traces can be reduced, improving reliability. Specifically, the inventors have discovered that during the fabrication of the display panel, the second adhesive layer above the dam is relatively thin, providing insufficient protection for the touch traces below, making them more susceptible to etching damage. Therefore, by increasing the linewidth of the touch traces above the dam, i.e., the first portion, the probability of the touch traces being damaged by etching can be reduced, thereby improving reliability.

[0016] In conjunction with the second aspect, in some possible implementations, the display panel further includes a first encapsulation layer and a second encapsulation layer located between the dam and the touch traces, with the second encapsulation layer located on the side of the first encapsulation layer facing away from the substrate; the orthographic projection of a first portion on the substrate overlaps with the edge of the orthographic projection of the first encapsulation layer on the substrate and the edge of the orthographic projection of the second encapsulation layer on the substrate.

[0017] In conjunction with the second aspect, in some possible implementations, the display panel further includes multiple inorganic layers located between the dam and the substrate; each inorganic layer has at least one groove, which penetrates the at least one inorganic layer along the thickness direction of the substrate, and the groove is located in the bezel area; preferably, the groove is located on the side of the dam away from the display area; preferably, the display panel further includes a first encapsulation layer and a second encapsulation layer located between the dam and the touch traces, the first encapsulation layer being located on the side of the multiple inorganic layers away from the substrate and filling part of the space in the groove; the second encapsulation layer being located on the side of the first encapsulation layer away from the substrate, and part of the second encapsulation layer is embedded in the space in the groove that is not filled by the first encapsulation layer.

[0018] In conjunction with the second aspect, in some possible implementations, the display panel further includes a second encapsulation layer located on the side of the dam facing away from the substrate; the display module further includes a polarizer located on the side of the touch trace facing away from the substrate; the edge of the orthographic projection of the polarizer on the substrate is located on the side of the orthographic projection of the dam on the substrate away from the display area; preferably, the edge of the orthographic projection of the polarizer on the substrate is located between the edges of the orthographic projection of the dam on the substrate and the orthographic projection of the second encapsulation layer on the substrate; or, the display module further includes touch traces located on the side of the second encapsulation layer facing away from the substrate; the display panel further includes conductive portions and insulating portions, the conductive portions and insulating portions being sequentially stacked on at least a portion of the inorganic layers facing away from the substrate, and the insulating portions being... The component includes a first via, into which a touch trace extends and contacts a conductive component; the edge of the polarizer's orthogonal projection on the substrate is located between the orthogonal projection of the second encapsulation layer on the substrate and the edge of the insulating component's orthogonal projection on the substrate near the display area; preferably, the distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 60 micrometers; preferably, the distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 80 micrometers and less than or equal to 120 micrometers; preferably, the orthogonal projection of the first encapsulation layer on the substrate is located within the range of the second encapsulation layer's orthogonal projection on the substrate.

[0019] A third aspect of this application provides yet another display module, comprising: a display panel having a display area and a border area at least partially surrounding the display area; the display panel including a substrate and a second encapsulation layer, the second encapsulation layer being located on one side of the substrate; and a polarizer located on the side of the second encapsulation layer opposite to the substrate, the edge of the polarizer's orthogonal projection on the substrate being located on the side of the second encapsulation layer's orthogonal projection on the substrate away from the display area. The advantage is that the edge of the polarizer extends in a direction away from the display area, i.e., on the projection plane in the substrate thickness direction, the edge of the polarizer is positioned between the edge of the second encapsulation layer and the insulating portion. This reduces the pulling effect of the polarizer's inward retraction on the second encapsulation layer and the insulating portion during reliability testing, further reducing the risk of film layer separation in the border area.

[0020] In conjunction with the third aspect, in some possible implementations, the display module further includes touch traces located on the side of the second encapsulation layer facing away from the substrate; the display panel further includes conductive and insulating portions, which are sequentially stacked on at least a portion of the inorganic layers on the side facing away from the substrate; the insulating portion includes a first via, and the touch trace extends into the first via and contacts the conductive portion; the edge of the orthogonal projection of the polarizer on the substrate is located between the orthogonal projection of the second encapsulation layer on the substrate and the edge of the orthogonal projection of the insulating portion on the substrate near the display area; preferably, the distance between the edge of the orthogonal projection of the polarizer on the substrate and the edge of the orthogonal projection of the second encapsulation layer on the substrate is greater than or equal to 60 micrometers; preferably, the distance between the edge of the orthogonal projection of the polarizer on the substrate and the edge of the orthogonal projection of the second encapsulation layer on the substrate is greater than or equal to 80 micrometers and less than or equal to 120 micrometers; preferably, the orthogonal projection of the first encapsulation layer on the substrate is located within the range of the orthogonal projection of the second encapsulation layer on the substrate.

[0021] In conjunction with the third aspect, in some possible implementations, the display panel further includes a first encapsulation layer and multiple inorganic layers located between the substrate and the second encapsulation layer. The multiple inorganic layers and the first encapsulation layer are stacked sequentially in a direction away from the substrate. The multiple inorganic layers have at least one groove, which penetrates at least one inorganic layer along the thickness direction of the substrate. The groove is located in the border area. The first encapsulation layer fills part of the space in the groove, and part of the second encapsulation layer is embedded in the space in the groove that is not filled by the first encapsulation layer.

[0022] In conjunction with the third aspect, in some possible implementations, the display panel further includes at least one dam located between the substrate and the second encapsulation layer; the display module further includes touch traces located between the second encapsulation layer and the polarizer, the orthographic projection of the touch traces on the substrate overlapping the orthographic projection of the dam on the substrate; the touch traces include a first portion and a second portion alternately arranged along the extension direction of the touch traces, at least a portion of the first portion overlapping the orthographic projection of the dam on the substrate, and at least a portion of the first portion having a linewidth greater than the linewidth of the second portion.

[0023] A fourth aspect of this application provides a display device, including the display module provided in any of the above embodiments.

[0024] According to the display module and display device provided in the embodiments of this application, by opening a groove on the inorganic layer of the display panel and setting a first encapsulation layer and a second encapsulation layer to be embedded in the groove, the bonding force between the inorganic layer, the first encapsulation layer and the second encapsulation layer is improved, the structural stability is enhanced, the probability of film layer separation is reduced, and thus the yield of the display panel is improved. Attached Figure Description

[0025] Figure 1This is a top view of the display module before bending, as provided in the first embodiment of this application.

[0026] Figure 2 for Figure 1 The diagram shown is a side view of the module after it has been bent.

[0027] Figure 3 Provided for the first embodiment of this application Figure 1 and Figure 2 The diagram shown is a cross-sectional schematic of the first local area of ​​the display module.

[0028] Figure 4 for Figure 1 and Figure 2 The diagram shown is a cross-sectional schematic of the second local region of the display module.

[0029] Figure 5 Provided for the second embodiment of this application Figure 1 and Figure 2 The diagram shown is a cross-sectional schematic of the first local area of ​​the display module.

[0030] Figure 6 This is a top view of the display module before bending, as provided in the second embodiment of this application.

[0031] Figure 7 This is a top view of the display module before bending, as provided in the third embodiment of this application.

[0032] Figures 8a-8f These are schematic diagrams illustrating various structures of the groove provided in embodiments of this application.

[0033] Figure 9 This is a top view of a mask provided in an embodiment of this application.

[0034] Figure 10 To utilize Figure 9 The diagram shows the process of fabricating the first and second encapsulation layers in the display module provided in any of the above embodiments using a mask.

[0035] Figure 11 Provided for the first embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module.

[0036] Figure 12 for Figure 11 A magnified view of a portion of the image.

[0037] Figure 13 Provided for the second embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module.

[0038] Figure 14Provided for the third embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module.

[0039] Figure 15 Provided for the fourth embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module.

[0040] Figure 16 Provided for the fifth embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module.

[0041] Figure 17 Provided for the sixth embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module.

[0042] Figure 18 Provided for the third embodiment of this application Figure 1 and Figure 2 The diagram shown is a cross-sectional schematic of the first local area of ​​the display module.

[0043] Figure 19 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] In the accompanying drawings, the dimensions of layers and regions may be exaggerated for clarity. It is understood that when a structure is referred to as being "on" or "below" another structure, the structure may be directly on or below the other structure, or there may be intermediate structures. The same reference numerals always indicate the same structure. Structures referred to herein include any of the following: membrane, element, device, component, assembly.

[0046] When a structure is referred to as being “connected” to another structure, it can be directly connected to the other structure or indirectly connected to the other structure by means of one or more intermediate structures placed between them.

[0047] In this specification, "electrical connection" includes the situation where components are connected together by elements that have a certain electrical function. There are no particular limitations on what constitutes an "electrical function," as long as it allows for the transmission and reception of electrical signals between the connected components. Examples of "electrical functions" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements with various functions.

[0048] In this specification, the term "same-layer arrangement" refers to a structure formed by two (or more) structures through the same patterning process, and their materials may be the same or different.

[0049] Figure 1 This is a top view of the display module before bending, as provided in the first embodiment of this application. Figure 2 for Figure 1 The image shows a schematic diagram of the side structure of the module after bending. (Combined with...) Figure 1 and Figure 2 As shown, the display module includes a display panel 10 and a polarizer 20. The display panel 10 has a display area AA, a bezel area NA, a bending area SA, and a bonding area BA. The bezel area NA at least partially surrounds the display area AA, the bonding area BA is located on the side of the bezel area NA away from the display area AA, and the bending area SA is located between the bezel area NA and the bonding area BA. The polarizer 20 is stacked on the display side of the display panel 10, and at least a portion of the polarizer 20 is located in the display area AA.

[0050] The display module may also include a bending protective layer (BPL) 30, which is stacked on the display side of the display panel and located in the bending area SA and part of the bezel area NA. The end of the BPL 30 near the display area AA is connected to the polarizer 20 or has a gap.

[0051] The display module may also include a flexible circuit board 40, which is electrically connected to the bonding area BA of the display panel 10.

[0052] The display module may also include a bottom plate film (BPF) 50, a support block 60, and some auxiliary materials 70. The BPF 50 is located on the non-display side of the display panel 10 and avoids the bending area SA. Exemplarily, the BPF 50 includes a cutout area directly opposite the bending area SA to avoid it. Exemplarily, the display module includes two BPF 50s: a first BPF 50 stacked with the display area AA, and a second BPF 50 stacked with the bonding area BA and the flexible circuit board 40. The support block 60 is located between the two BPF 50s to provide support. The auxiliary materials 70 include, for example, copper foil, foam, etc., and are located between the support block 60 and the first BPF 50.

[0053] Figure 3 Provided for the first embodiment of this application Figure 1 and Figure 2 The diagram shown is a cross-sectional schematic of the first local area of ​​the display module. Figure 3 It shows Figure 1 and Figure 2 A schematic diagram of a cross section at a local region Q1. Figure 4 for Figure 1 and Figure 2 The diagram shown is a cross-sectional schematic of the second local region of the display module. Figure 4 A schematic diagram of a cross-section of the display area AA is shown.

[0054] Combination Figure 3 and Figure 4 As shown, the display panel 10 includes a substrate 111, multiple inorganic layers 112, a first encapsulation layer 131, and a second encapsulation layer 132. The multiple inorganic layers 112 are stacked on one side of the substrate 111, and each inorganic layer 112 has at least one groove G. The groove G penetrates the at least one inorganic layer 112 along the thickness direction of the substrate 111 and is located in the border area NA. The first encapsulation layer 131 is located on the side of the multiple inorganic layers 112 facing away from the substrate 11 and fills a portion of the space in the groove G. The second encapsulation layer 132 is located on the side of the first encapsulation layer 131 facing away from the substrate 11, and a portion of the second encapsulation layer 132 is embedded in the space within the groove G that is not filled by the first encapsulation layer 131.

[0055] In some embodiments, the substrate 111 may be a glass substrate.

[0056] In some embodiments, substrate 111 may comprise an organic resin material such as epoxy resin, triazine, silicone resin, or polyimide. For example, substrate 111 may be a deformable printed circuit board (PCB).

[0057] The inorganic layer 112 includes a barrier layer and / or an insulating layer. The inorganic layer 112 extends from the display area AA to the bezel area NA. Exemplarily, the plurality of inorganic layers 112 include at least one of an interlayer insulating layer, a capacitor inorganic layer, a gate inorganic layer, and a barrier layer, which are sequentially stacked along the direction close to the substrate 11.

[0058] like Figure 4As shown, the display panel 10 also includes multiple conductive layers 113 located in the display area AA. An inorganic layer 112 is disposed between adjacent conductive layers 113. Exemplarily, the multiple conductive layers 113 include a first metal layer M1, a second metal layer M2, and a third metal layer M3 stacked sequentially along a direction away from the substrate 111. Along a direction away from the substrate 111, a barrier layer, a first metal layer M1, a gate inorganic layer, a second metal layer M2, a capacitor inorganic layer, a third metal layer M3, and an interlayer insulating layer are stacked sequentially. The multiple conductive layers 113 and the inorganic layers 112 between adjacent conductive layers 113 cooperate to form a pixel circuit. Exemplarily, the pixel circuit is a 7T1C pixel circuit or an 8T1C pixel circuit, etc.

[0059] Both the first encapsulation layer 131 and the second encapsulation layer 132 are inorganic layers. For example, the orthographic projection of the second encapsulation layer 132 on the substrate 111 covers the orthographic projection of the first encapsulation layer 131 on the substrate 111.

[0060] like Figure 4 As shown, the display panel 10 also includes a pixel definition layer 121 and a plurality of light-emitting devices 122, both located in the display area AA. The pixel definition layer 121 and the light-emitting devices 122 are situated between a plurality of inorganic layers 112 and a first encapsulation layer 131. The pixel definition layer 121 encloses a plurality of pixel openings, and the light-emitting devices 122 are located within these pixel openings. The light-emitting devices 122 are electrically connected to the pixel circuitry and emit light at a predetermined brightness under the drive of the pixel circuitry to achieve the display function.

[0061] The light-emitting device 122 can be an organic light-emitting diode (OLED), a micro light-emitting diode (Micro LED), a quantum dot light-emitting diode (QLED), etc. The light-emitting device 122 can be a light-emitting device of various colors, such as a red light-emitting device R, a green light-emitting device G, a blue light-emitting device B, etc. The light-emitting device 122 includes a first electrode 1221, at least one light-emitting functional layer 1222, and a second electrode 1223, sequentially stacked along a direction gradually moving away from the substrate 111. Exemplarily, the first electrode 1221 is the anode, and the second electrode 1223 is the cathode. Alternatively, the first electrode 1221 is the cathode, and the second electrode 1223 is the anode.

[0062] In one embodiment, the display panel 10 may further include a support layer 123 located on the side of the pixel definition layer 121 opposite to the substrate 111.

[0063] like Figure 4As shown, in one embodiment, the display panel 10 further includes a planarization layer 114 located between the pixel definition layer 121 and the inorganic layer 112.

[0064] Combination Figure 3 and Figure 4 As shown, the display panel 10 may further include a third encapsulation layer 133, which is located between the first encapsulation layer 131 and the second encapsulation layer 132. Exemplarily, the third encapsulation layer 133 is an organic layer. In one embodiment, the orthographic projection of the third encapsulation layer 133 onto the substrate 111 falls within the orthographic projection range of the first encapsulation layer 131 onto the substrate 111, and the orthographic projection of the first encapsulation layer 131 onto the substrate 111 falls within the orthographic projection range of the second encapsulation layer 132 onto the substrate 111.

[0065] The display module provided according to this embodiment includes a display module. By forming a groove G on the inorganic layer 112 of the display panel 10, and setting a first encapsulation layer 131 and a second encapsulation layer 132 to be embedded in the groove G, the bonding force between the inorganic layer 112, the first encapsulation layer 131 and the second encapsulation layer 132 is improved, the structural stability is enhanced, the probability of film separation is reduced, and thus the yield of the display panel is improved.

[0066] In one embodiment, such as Figure 3 As shown, the display panel 10 also includes at least one dam 115, which is located between the plurality of inorganic layers 112 and the first encapsulation layer 131, and is located in the bezel area NA. The orthographic projection of the groove G on the substrate 111 is located between the edge lines of the orthographic projection of the dam 115 on the substrate 111 and the orthographic projection of the first encapsulation layer 131 on the substrate 111.

[0067] It should be noted that grooves G can also be provided between adjacent dams 115. Providing grooves G on the side of dam 115 furthest from the display area AA, compared to providing grooves G between adjacent dams 115, allows the grooves G to be closer to the boundary between the first encapsulation layer 131 and the second encapsulation layer 132. Since the boundary is where film separation begins, this approach better addresses the film separation problem. However, to achieve a narrow bezel, the spacing between adjacent dams 18 is relatively small, generally limiting the number of grooves G that can be accommodated.

[0068] In one embodiment, such as Figure 3 As shown, at least one dam 115 includes a first dam and a second dam, with the first dam surrounding the display area AA and the second dam surrounding the first dam. It should be noted that this application does not limit the number of dams 115; the number of dams 115 can be reasonably set according to actual needs.

[0069] In one embodiment, such as Figure 3As shown, the height of the second dam is greater than that of the first dam in the thickness direction of the substrate 111. Thus, the second dam has better blocking capability than the first dam, and can better prevent the overflow of organic encapsulation material.

[0070] In one embodiment, such as Figure 3 As shown, the dam 115 includes multiple stacked sub-sections, each sub-section being on the same layer and made of the same material as one of the planarization layer 114, pixel definition layer 121, and support layer 123. For example, the first dam includes two stacked sub-sections, which are on the same layer and made of the same material as the pixel definition layer 121 and support layer 123, respectively. The second dam includes three stacked sub-sections, which are on the same layer and made of the same material as the planarization layer 114, pixel definition layer 121, and support layer 123, respectively.

[0071] like Figure 3 As shown, the display module also includes a touch trace 141 located on the side of the second encapsulation layer 132 away from the substrate 111. The orthographic projection of the touch trace 141 on the substrate 111 overlaps with the orthographic projection of the groove G on the substrate 111.

[0072] In one embodiment, the display panel 10 further includes a conductive portion 116 and an insulating portion 117 sequentially stacked on the side of at least a portion of the inorganic layers 112 facing away from the substrate 111. Both the conductive portion 116 and the insulating portion 117 are located on the side of the recess G away from the display area AA. The insulating portion 117 includes a first via h1, into which a touch trace 141 extends and contacts the conductive portion 116. The first via h1 is used to redirect the touch trace 141 to the conductive portion 116. The recess G is located on the side of the first via h1 closer to the display area AA. For example, in combination with… Figure 3 and Figure 4 As shown, the conductive part 116 and the third metal layer M3 are in the same layer and made of the same material. The insulating part 117 and the planarization layer 114 are in the same layer and made of the same material.

[0073] In one embodiment, the display panel further includes a protective layer PVX, at least a portion of which is located in the bezel area NA. In the bezel area NA, the protective layer PVX is located between the insulating portion 117 and the conductive portion 116. The protective layer PVX includes a second via h2 communicating with a first via h1, the orthographic projection of the first via h1 onto the substrate 111 falling within the orthographic projection range of the second via h2 onto the substrate 111. The protective layer PVX provides protection for the conductive portion 116. The material of the protective layer PVX can be an inorganic material. Exemplarily, the protective layer PVX extends from the display area AA to the bezel area NA, i.e., the protective layer PVX is a full-coverage film layer. The conductive portion 116 and the third metal layer M3 are co-layered, as are the insulating portion 117 and the planarization layer 114. In the bezel area NA, the protective layer PVX is located between the insulating portion 117 and the conductive portion 116; in the display area AA, the protective layer PVX is located between the third metal layer M3 and the planarization layer 114. In this case, the groove G penetrates the protective layer PVX.

[0074] In one embodiment, the protective layer PVX is the inorganic layer 112 furthest from the substrate 111 among a plurality of inorganic layers 112. The protective layer PVX includes a patterned surface S that contacts the first encapsulation layer 131. Exemplarily, at least a portion of the patterned surface S's orthographic projection on the substrate 111 surrounds the orthographic projection of the recess G on the substrate 111; that is, the orthographic projection of the recess G is surrounded by the patterned surface S. Exemplarily, at least a portion of the patterned surface S is located between adjacent dams 115.

[0075] In one embodiment, the plurality of inorganic layers 112 further include at least one of an interlayer insulating layer ILD, a capacitor inorganic layer CI, a gate inorganic layer GI, and a barrier layer BL, which are stacked sequentially along the direction close to the substrate 111.

[0076] like Figure 3 As shown, the display module also includes a first adhesive layer 142, located between the touch trace 141 and the second encapsulation layer 132, and situated in the bezel area NA. On one hand, the first adhesive layer 142 serves a planarization function, reducing the height difference below the first adhesive layer 142 in the bezel area NA. On the other hand, the first adhesive layer 142 spaces the touch trace 141 and the second encapsulation layer 132, reducing the degree of mutual negative influence between them during reliability testing. This mutual negative influence refers to the fact that when bent, the touch trace 141 experiences bending stress and moves away from the display area. During reliability testing, the second encapsulation layer 132 moves towards the display area AA along with the polarizer 20. That is, the touch trace 141 and the second encapsulation layer 132 move in opposite directions, thus causing film separation due to stress.

[0077] In one embodiment, the orthogonal projection of the first adhesive layer 142 onto the substrate 111 covers the orthogonal projection of the dam 115 onto the substrate 111.

[0078] In one embodiment, the edge of the orthographic projection of the first adhesive layer 142 on the substrate 111 away from the display area AA does not extend beyond the end of the orthographic projection of the touch trace 141 on the substrate 111 away from the display area AA. For example, the edge of the orthographic projection of the first adhesive layer 142 on the substrate 111 away from the display area AA is located on the side of the first via h1 near the display area AA.

[0079] In one embodiment, the display panel 10 further includes a third encapsulation layer 133, located between the first encapsulation layer 131 and the second encapsulation layer 132, and on the side of the dam 115 near the display area AA. The orthographic projection of the first adhesive layer 142 on the substrate 111 partially overlaps with the orthographic projection of the third encapsulation layer 133 on the substrate 111.

[0080] In one embodiment, the display module further includes a second adhesive layer 143 located on the side of the touch trace 141 away from the substrate 111 and in the border area NA. The orthographic projection of the second adhesive layer 143 on the substrate 111 covers the orthographic projection of the first adhesive layer 142 on the substrate 111.

[0081] In one embodiment, the display module further includes a third adhesive layer 144 located on the side of the second adhesive layer 143 away from the substrate and extending from the display area AA to the border area NA.

[0082] In one embodiment, the display module further includes a touch metal layer 145 located in the display area AA and between the second encapsulation layer 132 and the third adhesive layer 144. The touch metal layer 145 includes touch electrodes that are connected to touch traces 141 via vias in the bezel area NA.

[0083] In one embodiment, the display module further includes a polarizer 20 located on the side of the third adhesive layer 144 away from the substrate 111. The edge of the orthogonal projection of the polarizer 20 onto the substrate 111 is located on the side of the orthogonal projection of the groove G onto the substrate 111 away from the display area AA. Exemplarily, the edge of the orthogonal projection of the polarizer 20 onto the substrate 111 is located between the edges of the orthogonal projection of the groove G onto the substrate 111 and the edges of the orthogonal projection of the second encapsulation layer 132 onto the substrate 111.

[0084] Figure 5 Provided for the second embodiment of this application Figure 1 and Figure 2 The diagram shown is a cross-sectional schematic of the first local area of ​​the display module. Figure 5 It shows Figure 1 and Figure 2 A schematic diagram of a cross-section at a local region Q1. (See diagram below.) Figure 5 The display module and Figure 3The difference in the display module shown is that, in the display module provided in this embodiment, the display module does not include the first adhesive layer 142. Other structures and Figure 3 The modules shown are the same, so they will not be described again here.

[0085] Figure 6 This is a top view of the display module before bending, as provided in the second embodiment of this application. Figure 6 In the illustrated display module, in this embodiment, the recess G is located within the border area NA between the bonding area BA and the display area AA. For example, the border area NA of the display panel 10 includes a top border, a bottom border, a left border, and a right border. The bonding area BA is located on the side of the bottom border away from the display area AA, and correspondingly, the recess G is located within the bottom border.

[0086] Figure 7 This is a top view of the display module before bending, as provided in the third embodiment of this application. Figure 7 The display module shown in this embodiment has a groove G surrounding the display area AA.

[0087] It should be noted that, Figure 6 and Figure 7 Only two grooves G are shown in the diagram. This application does not limit the number of grooves G, and the specific number can be reasonably set according to actual needs.

[0088] Figures 8a-8f Schematic diagrams illustrating various structures of the groove provided in embodiments of this application. (In conjunction with...) Figures 8a-8f As shown, at least one groove G includes multiple grooves G, which are arranged sequentially in the direction from the display area AA to the border area NA.

[0089] In one embodiment, the widths of the different recesses G are equal in the direction from the display area AA to the bezel area NA. The width referred to here is the width on the same cross-section parallel to the substrate 111. For example, as shown... Figures 8a-8e As shown, the display panel includes a first groove G1, a second groove G2, and a third groove G3 arranged sequentially along the direction from the display area AA to the border area NA. On the same cross section parallel to the substrate 111, the first width Y1 of the first groove G1, the second width Y2 of the second groove G2, and the third width Y3 of the third groove G3 are all equal.

[0090] In another embodiment, the widths of the different recesses G are unequal in the direction from the display area AA to the border area NA. The width referred to here is the width on the same cross-section parallel to the substrate 111. For example, as... Figure 8fAs shown, the display panel includes a first groove G1, a second groove G2, and a third groove G3 arranged sequentially along the direction from the display area AA to the border area NA. On the same cross section parallel to the substrate 111, the first width Y1 of the first groove G1, the second width Y2 of the second groove G2, and the third width Y3 of the third groove G3 decrease or increase sequentially.

[0091] In one embodiment, such as Figures 8a-8d , Figure 8f As shown, the depths of the different grooves G are equal in the thickness direction of the substrate 111. For example, the display panel includes a first groove G1, a second groove G2, and a third groove G3 arranged sequentially along the direction from the display area AA to the border area NA. In the thickness direction of the substrate 111, the first depth H1 of the first groove G1, the second depth H2 of the second groove G2, and the third depth H3 of the third groove G3 are all equal.

[0092] In one embodiment, the depths of the different grooves G are not equal in the thickness direction of the substrate 111. For example, such as... Figure 8e As shown, the display panel includes a first groove G1, a second groove G2, and a third groove G3 arranged sequentially along the direction from the display area AA to the border area NA. On the same cross-section parallel to the substrate 111, the first width Y1 of the first groove G1, the second width Y2 of the second groove G2, and the third width Y3 of the third groove G3 are all equal. The first depth H1 of the first groove G1, the second depth H2 of the second groove G2, and the third depth H3 of the third groove G3 decrease or increase sequentially.

[0093] In one embodiment, combined Figures 8a-8f As shown, on the plane formed by the first direction X from the display area AA to the border area NA and the second direction Y perpendicular to the substrate 111, the cross-sectional shape of the groove G includes any one of rectangle, trapezoid, inverted trapezoid, and semicircle.

[0094] Figure 9 This is a top view of a mask provided in an embodiment of this application. Figure 10 To utilize Figure 9 The diagram shows a process for fabricating the first and second encapsulation layers in the display module provided in any of the above embodiments using a mask. (Combined with...) Figure 9 and Figure 10As shown, the intermediate product 1000 of the display module includes multiple display areas, each of which has a pre-fabricated light-emitting device 122, and each display area corresponds to a display panel 10. When it is necessary to fabricate a first encapsulation layer 131 or a second encapsulation layer 132 on the intermediate product 1000 of the display module, the intermediate product 1000 of the display module is placed on the platform 90, and a mask 80 is placed on the display side of the intermediate product 1000 of the display module. The mask 80 includes multiple openings K, each opening K corresponding to a display area. Figure 10 A cross-sectional structure of a display area is shown.

[0095] The first encapsulation layer 131 and the second encapsulation layer 132 can use the same mask 80. By adjusting the distance D between the mask 80 and the intermediate product 1000 of the display module, the thickness and length of the encapsulation material 200 entering the shadow area of ​​the mask 80 can be adjusted. For example, when fabricating the first encapsulation layer 131, a first distance is controlled between the mask 80 and the intermediate product 1000 of the display module. When fabricating the second encapsulation layer 132, a second distance is controlled between the mask 80 and the intermediate product 1000 of the display module. By controlling the first distance to be less than the second distance, the second encapsulation layer 132 can cover the first encapsulation layer 131.

[0096] Figure 11 Provided for the first embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module. Figure 11 Only shown Figure 3 The diagram shows a portion of the module's structure. Figure 12 for Figure 11 A magnified view of a specific area. Combined with... Figure 3 , Figure 11 and Figure 12 As shown, the orthographic projection of the touch trace 141 on the substrate 111 overlaps with the orthographic projection of the dam 115 on the substrate 111. The touch trace 141 includes a first portion S1 and a second portion S2 alternately arranged along the extension direction of the touch trace 141. At least a portion of the orthographic projection of the first portion S1 on the substrate 111 overlaps with the orthographic projection of the dam 115 on the substrate 111, and / or, at least a portion of the orthographic projection of the first portion S1 on the substrate 111 overlaps with the edge of the orthographic projection of the second encapsulation layer 132 on the substrate 111 and the edge of the orthographic projection of the first encapsulation layer 131 on the substrate 111. The linewidth X4 of at least a portion of the first portion S1 is greater than the linewidth X1 of the second portion S2. It should be noted that the linewidth X4 of the first portion S1 and the linewidth X1 of the second portion S2 are measured using the maximum value of their respective linewidths.

[0097] By setting the line width X4 of the first part S1 to be greater than the line width X1 of the second part S2, the risk of damage to the touch trace 141 can be reduced, thus improving reliability. Specifically, the inventors discovered that during the manufacturing process of the display panel, the second adhesive layer above the dam 115 is thinner, providing insufficient protection for the touch trace 141 below, making it more susceptible to etching damage. Therefore, by increasing the line width of the touch trace 141 above the dam 115, i.e., the first part S1, the probability of the touch trace 141 being damaged by etching can be reduced, thereby improving reliability.

[0098] In one embodiment, such as Figure 11 As shown, at least one dam 115 includes a plurality of dams 115, and the orthographic projection of each dam 115 on the substrate 111 overlaps with the orthographic projection of a first part S1 on the substrate 111. That is, for each touch trace 141, each dam 115 in the display panel corresponds to a first part S1 on the touch trace 141.

[0099] In one embodiment, such as Figure 11 As shown, the edge of the orthographic projection of the first encapsulation layer 131 onto the substrate 111 and the edge of the orthographic projection of the second encapsulation layer 132 onto the substrate 111 overlap with the orthographic projection of the same first part S1 onto the substrate 111. It should be noted that... Figure 11 In the process, the edges of the first encapsulation layer 131 and the second encapsulation layer 132 overlap. In the actual product, there may be a small gap between the edges of the first encapsulation layer 131 and the edges of the second encapsulation layer 132.

[0100] like Figure 12 As shown, in the width direction x of the dam 115, the length of the first part S1 is greater than or equal to the width of the dam 115 that overlaps with the orthographic projection of the first part S1 on the substrate 111.

[0101] In one embodiment, at least one dam 115 includes a plurality of dams 115, the widths of which may be equal or unequal. For example, the widths of the plurality of dams 115 may all be equal; or the widths of the plurality of dams 115 may be unequal to each other.

[0102] In one embodiment, the lengths of the different first portions S1 are equal in the width direction x of the dam 115. For example, the touch trace 141 includes three first portions S1, each having a first length Y7, a second length Y6, and a third length Y8, all of which are equal.

[0103] In one embodiment, in the extending direction y of the dam 115, the spacing X3 between the second parts S2 of adjacent touch traces 141 is greater than the line width X1 of the second parts S2.

[0104] In this embodiment, the orthographic projection of the first part S1 onto the substrate 111 is a rhombus.

[0105] Figure 13 Provided for the second embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module. Figure 13 The display module and Figure 12 The difference between the display modules shown is that the shape of the first part S1 is different. Specifically, Figure 13 The first part S1 in the display module is shown to have an elliptical orthographic projection shape on the substrate 111.

[0106] In other embodiments, the shape of the orthographic projection of the first part S1 onto the substrate 111 can also be a circle, a rounded rectangle, a trapezoid, a regular polygon, etc.

[0107] In one embodiment, in the display module provided in any of the above embodiments, the first part S1 includes a through hole H, which penetrates the touch trace 141 along the thickness direction of the substrate 111.

[0108] For example, Figure 14 Provided for the third embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module. Figure 14 The top view shown and Figure 12 The difference between the top view shown is that, in Figure 14 In the display module shown, the first part S1 includes a through hole H, which penetrates the touch trace 141 along the thickness direction of the substrate 111.

[0109] For example, Figure 15 Provided for the fourth embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module. Figure 15 The top view shown and Figure 13 The difference between the top view shown is that, in Figure 15 In the display module shown, the first part S1 includes a through hole H, which penetrates the touch trace 141 along the thickness direction of the substrate 111.

[0110] Combination Figure 14 and Figure 15 As shown, the orthographic projection of the via H onto the substrate 111 is circular. It should be noted that the orthographic projection of the via H onto the substrate 111 can also be any of the following: ellipse, trapezoid, rhombus, or regular polygon.

[0111] Combination Figure 14 and Figure 15 As shown, the number of through holes H is one. In other embodiments, the number of through holes H may also be multiple.

[0112] In one embodiment, the orthographic projection shape of the through-hole H on the substrate 111 is the same as the orthographic projection shape of the first part S1 on the substrate 111. For example, Figure 16 Provided for the fifth embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module. Figure 16 As shown, the orthographic projections of the first part S1 and the through-hole H onto the substrate 111 are both rhomboid in shape. For example, Figure 17 Provided for the sixth embodiment of this application Figure 3 The diagram shown is a top view of a portion of the display module. Figure 17 As shown, the orthographic projections of the first part S1 and the through hole H on the substrate 111 are both elliptical.

[0113] Figure 18 Provided for the third embodiment of this application Figure 1 and Figure 2 The diagram shown is a cross-sectional view of the first local area of ​​the display module. Figure 18 The difference between the display module shown and the display module provided in any of the above embodiments is that, in Figure 18 In the display module shown, the edge of the orthographic projection of the polarizer 20 on the substrate 111 is located between the orthographic projection of the second encapsulation layer 132 on the substrate 111 and the edge of the orthographic projection of the insulating portion 117 on the substrate 111 near the display area AA.

[0114] In one embodiment, the distance between the edge of the orthogonal projection of the polarizer 20 onto the substrate 111 and the edge of the orthogonal projection of the second encapsulation layer 132 onto the substrate 111 is greater than or equal to 60 micrometers. For example, the distance between the edge of the orthogonal projection of the polarizer 20 onto the substrate 111 and the edge of the orthogonal projection of the second encapsulation layer 132 onto the substrate 111 is 70 micrometers, 90 micrometers, 110 micrometers, etc.

[0115] In one embodiment, the distance between the edge of the orthogonal projection of the polarizer 20 onto the substrate 111 and the edge of the orthogonal projection of the second encapsulation layer 132 onto the substrate 111 is greater than or equal to 80 micrometers and less than or equal to 120 micrometers. For example, the distance between the edge of the orthogonal projection of the polarizer 20 onto the substrate 111 and the edge of the orthogonal projection of the second encapsulation layer 132 onto the substrate 111 is 90 micrometers, 100 micrometers, 110 micrometers, etc.

[0116] According to the display module provided in this embodiment, compared to the display modules provided in any of the above embodiments, in the display module provided in this embodiment, the edge of the polarizer 20 extends away from the display area AA. That is, on the projection surface of the substrate 111 in the thickness direction, the edge of the polarizer 20 is positioned between the edge of the second encapsulation layer 132 and the edge of the insulating portion 117 near the display area AA. In this way, the pulling effect of the inward retraction of the polarizer 20 on the second encapsulation layer 132 and the first encapsulation layer 131 during reliability testing can be reduced, further reducing the risk of film separation in the frame area NA.

[0117] The second aspect of this application provides another display module. See [link / reference] Figure 3 , Figure 11 and Figure 18 The display module includes a display panel 10 and touch traces 141. The display panel 10 has a display area AA and a border area NA that at least partially surrounds the display area AA. The display panel 10 includes a substrate 111 and at least one dam 115, which is located on one side of the substrate 111 and in the border area NA. The touch traces 141 are located on the side of the dam 115 facing away from the substrate 111, and the orthographic projection of the touch traces 141 on the substrate 111 overlaps with the orthographic projection of the dam 115 on the substrate 111. The touch traces 141 include alternating first portions S1 and second portions S2, with at least a portion of the first portion S1 overlapping the orthographic projection of the dam 115 on the substrate 111, and the linewidth X4 of at least a portion of the first portion S1 being greater than the linewidth X1 of the second portion S2. The advantage is that by setting the linewidth X4 of the first portion S1 to be greater than the linewidth X1 of the second portion S2, the risk of damage to the touch traces 141 can be reduced, improving reliability. Specifically, the inventors discovered that during the manufacturing process of the display panel, when the touch trace 141 climbs the slope at the dam 115, the second adhesive layer above the dam 115 is relatively thin, providing insufficient protection for the touch trace 141 below, making it more susceptible to etching damage. Therefore, by increasing the line width of the touch trace 141 above the dam 115, i.e., the first part S1, the probability of the touch trace 141 being etched can be reduced, thereby improving reliability.

[0118] In one embodiment, the display panel 10 further includes a first encapsulation layer 131 and a second encapsulation layer 132 located between the dam 115 and the touch trace 141, with the second encapsulation layer 132 located on the side of the first encapsulation layer 131 facing away from the substrate 111. The orthographic projection of a first portion S1 on the substrate 111 overlaps with the edge of the orthographic projection of the first encapsulation layer 131 on the substrate 111 and the edge of the orthographic projection of the second encapsulation layer 132 on the substrate 111.

[0119] In one embodiment, the display panel 10 further includes a plurality of inorganic layers 112 located between a dam 115 and a substrate 111. Each inorganic layer 112 has at least one recess G extending through it along the thickness direction of the substrate 111, and the recess G is located in the bezel area NA. Exemplarily, the recess G is located on the side of the dam 115 away from the display area AA.

[0120] In one embodiment, the display panel 10 further includes a first encapsulation layer 131 and a second encapsulation layer 132 located between the dam 115 and the touch trace 141. The first encapsulation layer 131 is located on the side of the plurality of inorganic layers 112 facing away from the substrate 111 and fills a portion of the space in the groove G. The second encapsulation layer 132 is located on the side of the first encapsulation layer 132 facing away from the substrate 111, and a portion of the second encapsulation layer 132 is embedded in the space in the groove G not filled by the first encapsulation layer 131. The advantage is that by creating the groove G on the inorganic layer 112 of the display panel 10 and setting the first encapsulation layer 131 and the second encapsulation layer 132 to be jointly embedded in the groove G, the bonding force between the inorganic layer 112, the first encapsulation layer 131, and the second encapsulation layer 132 is improved, the structural stability is enhanced, the probability of film layer separation is reduced, and thus the yield of the display panel is improved.

[0121] In one embodiment, the display panel 10 further includes a second encapsulation layer 132 located on the side of the dam 115 away from the substrate 111. The display module also includes a polarizer 20 located on the side of the touch trace 141 away from the substrate 111, with the edge of the orthogonal projection of the polarizer 141 on the substrate 111 located on the side of the orthogonal projection of the dam 115 on the substrate 111 away from the display area AA.

[0122] For example, see Figure 3 The edge of the orthographic projection of the polarizer 20 on the substrate 111 is located between the edge of the orthographic projection of the dam 115 on the substrate 111 and the edge of the orthographic projection of the second encapsulation layer 132 on the substrate 111.

[0123] For example, see Figure 18The display module also includes a touch trace 141 located on the side of the second encapsulation layer 132 facing away from the substrate 111. The display panel 10 also includes a conductive portion 116 and an insulating portion 117, which are sequentially stacked on at least a portion of the inorganic layers 112 on the side facing away from the substrate 111. The insulating portion 117 includes a first via, and the touch trace 141 extends into the first via and contacts the conductive portion 116. The edge of the orthographic projection of the polarizer 20 onto the substrate 111 is located between the orthographic projection of the second encapsulation layer 132 onto the substrate 111 and the edge of the orthographic projection of the insulating portion 117 onto the substrate 111 near the display area. Compared to a scheme where the edge of the polarizer 20's orthogonal projection on the substrate 111 is located between the edges of the dam 115's orthogonal projection on the substrate 111 and the second encapsulation layer 132's orthogonal projection on the substrate 111, in this scheme, the edge of the polarizer 20 extends in a direction away from the display area AA. That is, on the projection surface in the thickness direction of the substrate 111, the edge of the polarizer 20 is positioned between the edge of the second encapsulation layer 132 and the insulating portion 117. This reduces the pulling effect of the inward retraction of the polarizer 20 on the second encapsulation layer 132 and the first encapsulation layer 131 during reliability testing, further reducing the risk of film separation in the bezel area NA.

[0124] For example, the distance between the edge of the polarizer 20 projected onto the substrate 111 and the edge of the second encapsulation layer 132 projected onto the substrate is greater than or equal to 60 micrometers.

[0125] For example, the distance between the edge of the polarizer 20 projected onto the substrate 111 and the edge of the second encapsulation layer 132 projected onto the substrate 111 is greater than or equal to 80 micrometers and less than or equal to 120 micrometers.

[0126] For example, the orthographic projection of the first encapsulation layer 131 onto the substrate 111 is within the orthographic projection range of the second encapsulation layer 132 onto the substrate 111.

[0127] The third aspect of this application provides yet another display module. See [link / reference] Figure 18 The display module includes a display panel 10 and a polarizer 20. The display panel 10 has a display area AA and a border area NA that at least partially surrounds the display area AA. The display panel 10 includes a substrate 111 and a second encapsulation layer 132, the second encapsulation layer 132 being located on one side of the substrate 111. The polarizer 20 is located on the side of the second encapsulation layer 132 opposite to the substrate 111, and the edge of the orthographic projection of the polarizer 132 onto the substrate 111 is located on the side of the orthographic projection of the second encapsulation layer 132 onto the substrate 111 away from the display area AA.

[0128] In one embodiment, the display module further includes a touch trace 141 located on the side of the second encapsulation layer 132 facing away from the substrate 111. The display panel 10 also includes a conductive portion 116 and an insulating portion 117, which are sequentially stacked on at least a portion of the inorganic layers 112 on the side facing away from the substrate 111. The insulating portion 117 includes a first via, into which the touch trace 141 extends and contacts the conductive portion 116. The edge of the orthographic projection of the polarizer 20 onto the substrate 111 lies between the orthographic projection of the second encapsulation layer 132 onto the substrate 111 and the edge of the orthographic projection of the insulating portion 117 onto the substrate 111 near the display area AA.

[0129] For example, the distance between the edge of the polarizer 20 projected onto the substrate 111 and the edge of the second encapsulation layer 132 projected onto the substrate 111 is greater than or equal to 60 micrometers.

[0130] For example, the distance between the edge of the polarizer 20 projected onto the substrate 111 and the edge of the second encapsulation layer 132 projected onto the substrate 111 is greater than or equal to 80 micrometers and less than or equal to 120 micrometers.

[0131] For example, the orthographic projection of the first encapsulation layer 131 onto the substrate 111 is within the orthographic projection range of the second encapsulation layer 132 onto the substrate 111.

[0132] In one embodiment, the display panel 10 further includes a first encapsulation layer 131 and a plurality of inorganic layers 112 located between the substrate 111 and the second encapsulation layer 132. The plurality of inorganic layers 112 and the first encapsulation layer 131 are stacked sequentially in a direction away from the substrate 111. The plurality of inorganic layers 112 have at least one groove G, which penetrates at least one inorganic layer 112 along the thickness direction of the substrate, and the groove G is located in the border area NA. The first encapsulation layer 131 fills a portion of the space in the groove G, and a portion of the second encapsulation layer 132 is embedded in the space in the groove G that is not filled by the first encapsulation layer 131.

[0133] In one embodiment, combined Figure 18 and Figure 11 As shown, the display panel 10 also includes at least one dam 115, which is located between the substrate 111 and the second encapsulation layer 132. The display module also includes a touch trace 141, which is located between the second encapsulation layer 132 and the polarizer 20. The orthographic projection of the touch trace 141 on the substrate 111 overlaps with the orthographic projection of the dam 115 on the substrate 111. The touch trace 141 includes a first portion S1 and a second portion S2 alternately arranged along the extension direction of the touch trace 141. At least a portion of the first portion S1 overlaps with the orthographic projection of the dam 115 on the substrate 111, and at least a portion of the linewidth of the first portion S1 is greater than the linewidth of the second portion S2.

[0134] The fourth aspect of this application provides a display device. Figure 19 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Figure 19 As shown, the display device includes the display module 100 provided in any of the above embodiments.

[0135] A display device is a product with image display capabilities. For example, a display device can be used to display static images, such as pictures or photographs. A display device can also be used to display dynamic images, such as videos.

[0136] Display devices can be laptops, mobile phones, handheld or portable computers, cameras, camcorders, in-vehicle smart central control screens, calculators, smartwatches, GPS navigators, electronic photographs, electronic billboards or signs, projectors, etc.

[0137] In addition, the display device can also perform functions such as taking photos, recording videos, fingerprint recognition, and facial recognition. Accordingly, the display device also includes at least one functional module for implementing the above functions, such as an under-display camera or an under-display fingerprint recognition sensor.

[0138] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0139] The above description has been given for illustrative and descriptive purposes. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A display module, characterized in that, The display panel includes a display area and a border area that at least partially surrounds the display area; the display panel includes: Substrate; Multiple inorganic layers are stacked on one side of the substrate, and at least one groove is formed in the multiple inorganic layers. The groove penetrates at least one inorganic layer along the thickness direction of the substrate and is located in the border area. The first encapsulation layer is located on the side of the plurality of inorganic layers opposite to the substrate and fills a portion of the space in the groove; A second encapsulation layer is located on the side of the first encapsulation layer opposite to the substrate, and a portion of the second encapsulation layer is embedded in the space within the groove not filled by the first encapsulation layer; and A third encapsulation layer is located between the first encapsulation layer and the second encapsulation layer, and is located in the display area; wherein the first encapsulation layer and the second encapsulation layer are both inorganic layers, and the third encapsulation layer is an organic layer.

2. The display module according to claim 1, characterized in that, It also includes at least one dam located between the plurality of inorganic layers and the first encapsulation layer, and located in the border area; the orthographic projection of the groove on the substrate is located between the edge line of the orthographic projection of the dam on the substrate and the orthographic projection of the first encapsulation layer on the substrate.

3. The display module according to claim 2, characterized in that, The display panel further includes a bonding area located on the side of the border area away from the display area, and the recess is located within the border area between the bonding area and the display area; or, the recess surrounds the display area.

4. The display module according to claim 2, characterized in that, At least one of the dams includes a first dam and a second dam, the first dam surrounding the display area and the second dam surrounding the first dam; in the thickness direction of the substrate, the height of the second dam is greater than that of the first dam.

5. The display module according to claim 2, characterized in that, The display panel further includes a planarization layer, a pixel definition layer, and a support layer stacked along a direction away from the substrate. The planarization layer, the pixel definition layer, and the support layer are located between the plurality of inorganic layers and the first encapsulation layer, and are located in the display area. The dam includes a plurality of stacked sub-parts. The sub-parts are on the same layer and made of the same material as one of the planarization layer, the pixel definition layer, and the support layer. The display panel further includes a plurality of light-emitting devices. The pixel definition layer encloses a plurality of pixel openings, and the light-emitting devices are located within the pixel openings.

6. The display module according to claim 1, characterized in that, It also includes touch traces located on the side of the second encapsulation layer away from the substrate, wherein the orthographic projection of the touch traces on the substrate and the orthographic projection of the groove on the substrate overlap.

7. The display module according to claim 6, characterized in that, The display panel further includes a conductive portion and an insulating portion sequentially stacked on the side of at least a portion of the plurality of inorganic layers facing away from the substrate. The conductive portion and the insulating portion are both located on the side of the groove away from the display area. The insulating portion includes a first via, and the touch trace extends into the first via and contacts the conductive portion.

8. The display module according to claim 7, characterized in that, The display panel further includes a protective layer, at least a portion of which is located in the frame area; in the frame area, the protective layer is located between the insulating portion and the conductive portion, and the protective layer includes a second via, which communicates with the first via; the orthographic projection of the first via on the substrate is located within the orthographic projection range of the second via on the substrate.

9. The display module according to claim 8, characterized in that, The display panel further includes a planarization layer located on the side of the protective layer away from the substrate and in the display area; the insulating portion and the planarization layer are in the same layer and made of the same material.

10. The display module according to claim 8, characterized in that, The protective layer includes a patterned surface that contacts the first encapsulation layer; at least a portion of the patterned surface's orthographic projection on the substrate surrounds the orthographic projection of the groove on the substrate.

11. The display module according to claim 10, characterized in that, The display module further includes at least one dam located between the plurality of inorganic layers and the first encapsulation layer, and located in the border area; at least a portion of the graphic surface is located between adjacent dams.

12. The display module according to claim 6, characterized in that, The plurality of inorganic layers include at least one of an interlayer insulating layer, a capacitor inorganic layer, a gate inorganic layer, and a barrier layer, which are stacked sequentially along the direction close to the substrate.

13. The display module according to claim 6, characterized in that, It also includes a first adhesive layer located between the touch trace and the second encapsulation layer, and located in the bezel area; the display panel also includes at least one dam located between the plurality of inorganic layers and the first encapsulation layer, and located on the side of the recess near the display area; the orthographic projection of the first adhesive layer on the substrate covers the orthographic projection of the dam on the substrate; the edge of the orthographic projection of the first adhesive layer on the substrate away from the display area does not extend beyond the end of the orthographic projection of the touch trace on the substrate away from the display area; the third encapsulation layer is located on the side of the dam near the display area; the orthographic projection of the first adhesive layer on the substrate partially overlaps with the orthographic projection of the third encapsulation layer on the substrate.

14. The display module according to claim 13, characterized in that, The display module further includes a second adhesive layer located on the side of the touch trace away from the substrate and in the border area; the display module further includes a third adhesive layer located on the side of the second adhesive layer away from the substrate and extending from the display area to the border area; the display module further includes a touch metal layer located between the second encapsulation layer and the third adhesive layer and in the display area; the display module further includes a polarizer located on the side of the third adhesive layer away from the substrate.

15. The display module according to claim 1, characterized in that, At least one of the grooves comprises a plurality of grooves, wherein the plurality of grooves are arranged sequentially in the direction from the display area to the border area; the widths of different grooves are equal in the direction from the display area to the border area; or the widths of different grooves are unequal; the depths of different grooves are equal in the thickness direction of the substrate; or the depths of different grooves are unequal; and the cross-sectional shape of the groove includes any one of a rectangle, a regular trapezoid, an inverted trapezoid, and a semicircle on a plane formed by a first direction from the display area to the border area and a second direction perpendicular to the substrate.

16. The display module according to claim 1, characterized in that, The display panel further includes at least one dam, which is located between the plurality of inorganic layers and the first encapsulation layer, and is located on the side of the groove closer to the display area; the display module further includes touch traces, which are located on the side of the second encapsulation layer opposite to the substrate, and the orthographic projection of the touch traces on the substrate overlaps with the orthographic projection of the dam on the substrate; The touch trace includes a first part and a second part alternately arranged along the extension direction of the touch trace. At least a portion of the orthographic projection of the first part on the substrate overlaps with the orthographic projection of the dam on the substrate, and / or, at least a portion of the orthographic projection of the first part on the substrate overlaps with the edge of the orthographic projection of the second encapsulation layer on the substrate and the edge of the orthographic projection of the first encapsulation layer on the substrate; at least a portion of the line width of the first part is greater than the line width of the second part.

17. The display module according to claim 16, characterized in that, At least one of the dams includes a plurality of dams, each of the dams having an orthographic projection on the substrate that overlaps with an orthographic projection of a first portion on the substrate; the edges of the orthographic projections of the first encapsulation layer and the second encapsulation layer on the substrate overlap with the orthographic projections of the same first portion on the substrate.

18. The display module according to claim 16, characterized in that, In the width direction of the dam, the length of the first part is greater than or equal to the width of the dam that overlaps with the orthographic projection of the first part on the substrate; at least one dam includes multiple dams, and the widths of different dams are equal or unequal; in the width direction of the dam, the lengths of different first parts are equal; in the extension direction of the dam, the spacing between the second parts of adjacent touch traces is greater than the line width of the second part; the shape of the orthographic projection of the first part on the substrate includes any one of a circle, an ellipse, a trapezoid, a rhombus, and a regular polygon.

19. The display module according to claim 16, characterized in that, The first part includes a through hole that penetrates the touch trace along the thickness direction of the substrate; the orthographic projection shape of the through hole on the substrate is the same as the orthographic projection shape of the first part on the substrate; the orthographic projection shape of the through hole on the substrate includes any one of a circle, an ellipse, a trapezoid, a rhombus, or a regular polygon.

20. The display module according to claim 1, characterized in that, It also includes a polarizer located on the side of the second encapsulation layer away from the substrate; the edge of the polarizer's orthogonal projection on the substrate is located on the side of the groove's orthogonal projection on the substrate away from the display area; The edge of the polarizer's orthogonal projection onto the substrate lies between the edge of the groove's orthogonal projection onto the substrate and the edge of the second encapsulation layer's orthogonal projection onto the substrate; or The display module further includes touch traces located on the side of the second encapsulation layer away from the substrate; the display panel further includes conductive portions and insulating portions, the conductive portions and the insulating portions being stacked sequentially on at least a portion of the plurality of inorganic layers on the side away from the substrate, the insulating portion including a first via, the touch traces extending into the first via and contacting the conductive portions; The edge of the polarizer's orthogonal projection on the substrate lies between the orthogonal projection of the second encapsulation layer on the substrate and the edge of the insulating portion's orthogonal projection on the substrate near the display area.

21. The display module according to claim 20, characterized in that, The distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 60 micrometers.

22. The display module according to claim 21, characterized in that, The distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 80 micrometers and less than or equal to 120 micrometers.

23. The display module according to claim 1, characterized in that, The orthographic projection of the first encapsulation layer on the substrate is within the orthographic projection range of the second encapsulation layer on the substrate.

24. A display module, characterized in that, include: A display panel having a display area and a border area that at least partially surrounds the display area; The display panel includes a substrate and at least one dam, the dam being located on one side of the substrate and within the bezel area; The touch trace is located on the side of the dam away from the substrate, and the orthographic projection of the touch trace on the substrate overlaps with the orthographic projection of the dam on the substrate; wherein, the touch trace includes an alternately arranged first part and a second part, at least a portion of the orthographic projection of the first part on the substrate overlaps with the orthographic projection of the dam on the substrate, and at least a portion of the line width of the first part is greater than the line width of the second part. The display panel further includes a second encapsulation layer located on the side of the dam away from the substrate; The display module also includes a polarizer located on the side of the touch trace away from the substrate; the edge of the polarizer's orthogonal projection on the substrate is located on the side of the dam's orthogonal projection on the substrate away from the display area; Wherein, the edge of the orthographic projection of the polarizer on the substrate is located between the edge of the orthographic projection of the dam on the substrate and the edge of the orthographic projection of the second encapsulation layer on the substrate; or The display module further includes touch traces and multiple inorganic layers, the multiple inorganic layers being located between the dam and the substrate, and the touch traces being located on the side of the second encapsulation layer facing away from the substrate; the display panel further includes conductive portions and insulating portions, the conductive portions and the insulating portions being stacked sequentially on at least a portion of the inorganic layers on the side facing away from the substrate, the insulating portion including a first via, the touch traces extending into the first via and contacting the conductive portion; the edge of the orthogonal projection of the polarizer on the substrate is located between the orthogonal projection of the second encapsulation layer on the substrate and the edge of the orthogonal projection of the insulating portion on the substrate near the display area.

25. The display module according to claim 24, characterized in that, The display panel further includes a first encapsulation layer and a second encapsulation layer located between the dam and the touch trace, the second encapsulation layer being located on the side of the first encapsulation layer facing away from the substrate; the orthographic projection of the first portion on the substrate overlaps with the edge of the orthographic projection of the first encapsulation layer on the substrate and the edge of the orthographic projection of the second encapsulation layer on the substrate.

26. The display module according to claim 24, characterized in that, The display panel further includes multiple inorganic layers located between the dam and the substrate; each inorganic layer has at least one groove, which penetrates the inorganic layer along the thickness direction of the substrate and is located in the bezel area; the groove is located on the side of the dam away from the display area; the display panel further includes a first encapsulation layer and a second encapsulation layer located between the dam and the touch traces, the first encapsulation layer being located on the side of the multiple inorganic layers away from the substrate and filling part of the space in the groove; The second encapsulation layer is located on the side of the first encapsulation layer away from the substrate, and a portion of the second encapsulation layer is embedded in the space within the groove that is not filled by the first encapsulation layer.

27. The display module according to claim 24, characterized in that, The distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 60 micrometers.

28. The display module according to claim 27, characterized in that, The distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 80 micrometers and less than or equal to 120 micrometers.

29. A display module, characterized in that, include: A display panel having a display area and a border area that at least partially surrounds the display area; The display panel includes a substrate and a second encapsulation layer, wherein the second encapsulation layer is located on one side of the substrate; A polarizer is located on the side of the second encapsulation layer opposite to the substrate, and the edge of the orthogonal projection of the polarizer on the substrate is located on the side of the edge of the orthogonal projection of the second encapsulation layer on the substrate away from the display area; as well as The display panel includes touch traces and multiple inorganic layers, wherein the multiple inorganic layers are located between the second encapsulation layer and the substrate, and the touch traces are located on the side of the second encapsulation layer opposite to the substrate; the display panel also includes conductive portions and insulating portions, wherein the conductive portions and the insulating portions are sequentially stacked on at least a portion of the inorganic layers on the side opposite to the substrate, and the insulating portions include a first via, wherein the touch traces extend into the first via and contact the conductive portions; The edge of the polarizer's orthogonal projection on the substrate lies between the orthogonal projection of the second encapsulation layer on the substrate and the edge of the insulating portion's orthogonal projection on the substrate near the display area.

30. The display module according to claim 29, characterized in that, The distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 60 micrometers.

31. The display module according to claim 30, characterized in that, The distance between the edge of the polarizer's orthogonal projection on the substrate and the edge of the second encapsulation layer's orthogonal projection on the substrate is greater than or equal to 80 micrometers and less than or equal to 120 micrometers.

32. The display module according to claim 29, characterized in that, The display module further includes a first encapsulation layer located between the second encapsulation layer and the substrate; the orthographic projection of the first encapsulation layer on the substrate is within the orthographic projection range of the second encapsulation layer on the substrate.

33. The display module according to claim 29, characterized in that, The display panel further includes a first encapsulation layer and a plurality of inorganic layers located between the substrate and the second encapsulation layer. The plurality of inorganic layers and the first encapsulation layer are stacked sequentially in a direction away from the substrate. The plurality of inorganic layers have at least one groove, which penetrates at least one inorganic layer along the thickness direction of the substrate. The groove is located in the border area. The first encapsulation layer fills part of the space in the groove, and part of the second encapsulation layer is embedded in the space in the groove that is not filled by the first encapsulation layer.

34. The display module according to claim 29, characterized in that, The display panel further includes at least one dam located between the substrate and the second encapsulation layer; the display module further includes touch traces located between the second encapsulation layer and the polarizer, wherein the orthographic projection of the touch traces on the substrate overlaps with the orthographic projection of the dam on the substrate; The touch trace includes a first part and a second part that are alternately arranged along the extension direction of the touch trace. At least a portion of the orthographic projection of the first part on the substrate overlaps with the orthographic projection of the dam on the substrate. At least a portion of the line width of the first part is greater than the line width of the second part.

35. A display device, characterized in that, The display module includes any one of claims 1-34.

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