Display module

Abstract

The invention provides a display module which comprises a display panel which comprises a display area and a non-display area located on the periphery of the display area, the non-display area is provided with a blocking dam surrounding the display area, the first supporting layer is located on the non-display side of the display panel, and the second supporting layer is located on the non-display side of the display panel. Wherein the first supporting layer comprises a first supporting edge, the orthographic projection of the first supporting edge on the display panel is located in the display panel, and the distance between the orthographic projection of the first supporting edge on the display panel and the edge of the display panel is smaller than the distance between the orthographic projection of the first supporting edge on the display panel and the edge of the display panel. The distance is smaller than or equal to the distance from the orthographic projection of the edge of the side, away from the display area, of the blocking dam on the display panel to the edge of the display panel. According to the technical scheme, the area, provided with the blocking dam, of the display panel can be supported by the first supporting layer, in this way, when external force is applied, the situation that a film layer, located near the blocking dam, of the display panel is damaged due to stress concentration can be avoided, and therefore the yield of the display panel is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display module. Background Art

[0002] With the widespread use of electronic display products in people's daily lives, users have increasingly higher demands on the appearance of electronic display products, especially the screen-to-body ratio. In response to this demand, electronic display products with full-screen display functions under the concepts of narrow bezels and no bezels have emerged.

[0003] The display panel in the electronic display product needs to be designed with a narrow frame to improve the display effect and the customer's appearance experience. However, during use, due to local force or long-term continuous local force, some areas of the display panel are easily damaged when subjected to force. Summary of the invention

[0004] In a first aspect, the present disclosure provides a display module, which includes a display panel and a first supporting layer. The display panel includes a display area and a non-display area located outside the display area, the non-display area is provided with a blocking dam surrounding the display area, and the first supporting layer is located on the non-display side of the display panel. The first supporting layer includes a first supporting edge, the orthographic projection of the first supporting edge on the surface where the display panel is located is located within the display panel, and in a cross section in the thickness direction of the display panel, the distance from the first supporting edge to the edge of the display panel is not greater than the distance from the edge of the side of the blocking dam away from the display area to the edge of the display panel.

[0005] In the above solution, the area of ​​the display panel provided with the barrier dam can be supported by the first supporting layer, so that when subjected to external force, stress concentration and damage to the film layer of the display panel near the barrier dam can be avoided, thereby ensuring the yield of the display panel.

[0006] In a specific embodiment of the first aspect of the present disclosure, the display panel further includes a substrate and a packaging structure. The substrate is divided into a display area and a non-display area, the substrate carries a blocking dam, and the packaging structure is located on one side of the substrate and extends from the display area to the non-display area, wherein the blocking dam is located between the packaging structure and the substrate.

[0007] In the above scheme, the packaging structure covers the barrier dam, so the barrier dam will change the film layer distribution of the packaging structure, making the packaging structure more susceptible to stress concentration and damage when subjected to external force. In the above scheme, after supporting this position with the first supporting layer, the probability of shape deformation in the area where the barrier dam is located can be reduced or the degree of deformation can be alleviated, thereby reducing the risk of stress concentration in this position of the packaging structure.

[0008] In a specific embodiment of the first aspect of the present disclosure, the display panel further includes a display function layer, the display function layer is located between the encapsulation structure and the substrate and in the display area, and the display function layer includes a plurality of light-emitting devices.

[0009] In a specific embodiment of the first aspect of the present disclosure, the encapsulation structure includes a first encapsulation layer, which extends from the display area to the non-display area and covers the barrier dam and the light-emitting device.

[0010] In a specific embodiment of the first aspect of the present disclosure, the first encapsulation layer is an inorganic film layer. The inorganic film layer has a high degree of density to encapsulate and protect the internal structure of the display panel. Accordingly, the inorganic film layer is easily damaged due to stress concentration, especially at the location of the barrier dam. The first encapsulation layer changes the film shape due to covering the barrier dam, which makes stress concentration more likely to occur. In the solution of the present disclosure, this problem can be solved by supporting the location of the barrier dam of the display panel.

[0011] In a specific embodiment of the first aspect of the present disclosure, the encapsulation structure further includes a second encapsulation layer and a third encapsulation layer, the second encapsulation layer and the third encapsulation layer are located on the side of the first encapsulation layer facing away from the substrate, and the second encapsulation layer is located between the first encapsulation layer and the third encapsulation layer. The second encapsulation layer and the third encapsulation layer extend from the display area to the non-display area, the second encapsulation layer is located on the side of the blocking dam facing the display area, and the third encapsulation layer covers the blocking dam to connect with the first encapsulation layer. At the location where the blocking dam is located, the second encapsulation layer changes the shape of the film layer due to covering the blocking dam, thereby making it more prone to stress concentration. In the solution of the present disclosure, this problem can be solved by supporting the location of the blocking dam of the display panel.

[0012] In a specific embodiment of the first aspect of the present disclosure, the second encapsulation layer is an organic film layer, and the third encapsulation layer is an inorganic film layer.

[0013] In a specific embodiment of the first aspect of the present disclosure, the distance between the edge of the barrier dam away from the display area and the edge of the display panel is not greater than 350 microns. Under the condition of this numerical range, the display panel as a whole can present a narrow frame, and the portion of the display panel located at the barrier dam away from the display area has a sufficient width to buffer external stress and reduce the risk of cracks extending to the inner area of ​​the display panel when the edge of the display panel is damaged.

[0014] Optionally, a distance between an edge of a side of the barrier dam away from the display area and an edge of the display panel is 200 micrometers to 350 micrometers.

[0015] In a specific implementation of the first aspect of the present disclosure, the distance between the first supporting edge of the first supporting layer and the edge of the display panel is not greater than 150 microns. Under the condition of this numerical range, it can be ensured that the first supporting layer supports the position of the display panel where the barrier dam is provided, while still reserving sufficient space for assembling (e.g., position identification, alignment, etc.) the display panel.

[0016] In a specific embodiment of the first aspect of the present disclosure, the display module also includes a glue layer, which is located between the display panel and the first supporting layer. The glue layer includes a first glue layer edge, and the orthographic projection of the first glue layer edge on the surface where the display panel is located is located inside the display panel. The distance between the first glue layer edge of the glue layer and the edge of the display panel is smaller than the distance from the edge of the side of the blocking dam away from the display area to the edge of the display panel.

[0017] In the above scheme, the area of ​​the display panel where the blocking dam is provided can be supported by the adhesive layer. In this way, when subjected to external force, the stress concentration and damage of the film layer of the display panel near the blocking dam can be avoided, thereby ensuring the yield of the display panel; in addition, the supporting force provided by the first supporting layer can also be transmitted to the display panel through the adhesive layer.

[0018] In a specific implementation of the first aspect of the present disclosure, the distance between the edge of the glue layer and the edge of the display panel is equal to the distance between the edge of the first supporting layer and the edge of the display panel.

[0019] In a specific embodiment of the first aspect of the present disclosure, the distance between the edge of the glue layer and the edge of the display panel is smaller than the distance between the edge of the first supporting layer and the edge of the display panel. In this way, while ensuring that the area of ​​the display panel provided with the barrier dam is supported, a larger distance can be provided between the edge of the first supporting layer and the edge of the display panel, so as to expose more display panels for easy positioning during assembly; or, while ensuring that the area of ​​the display panel provided with the barrier dam is supported and that more display panels are exposed for easy positioning during assembly, a smaller design size (narrower frame) can be allowed for the non-display area of ​​the display panel.

[0020] In a specific implementation of the first aspect of the present disclosure, the difference between the distance between the edge of the first supporting layer and the edge of the display panel and the distance between the edge of the glue layer and the edge of the display panel is not greater than 50 microns. Under the condition of this numerical range, it can be ensured that the supporting force of the first supporting layer on the glue layer can be transmitted to the edge of the glue layer, so as to ensure the support of the glue layer on the display panel.

[0021] In a specific embodiment of the first aspect of the present disclosure, the display module also includes a second supporting layer, the second supporting layer includes a second supporting edge, the second supporting edge is located between the glue layer and the display panel, and the edge of the second supporting layer is connected to the edge of the display panel.

[0022] In a specific embodiment of the first aspect of the present disclosure, the hardness of the first supporting layer is greater than the hardness of the second supporting layer. For example, the first supporting layer may include a rigid material such as metal.

[0023] In a specific embodiment of the first aspect of the present disclosure, the non-display area of ​​the display panel includes a positioning area, the portion of the display panel located outside the positioning area is located within the orthographic projection of the first supporting layer on the surface where the display panel is located, and the positioning area is located outside the orthographic projection of the first supporting layer on the surface where the display panel is located.

[0024] In the above solution, the first supporting layer is configured to only leak out of the positioning area of ​​the display panel to ensure assembly positioning, and the edge of the first supporting layer will exceed the edge of other parts of the display panel except the positioning area, thereby reducing the risk of the edge of the display panel being damaged by collision.

[0025] In a specific embodiment of the first aspect of the present disclosure, the first supporting layer includes a groove, and the positioning area of ​​the display panel coincides with the orthographic projection of the groove on the surface where the display panel is located, or the positioning area of ​​the display panel is located within the orthographic projection of the groove on the surface where the display panel is located.

[0026] In a specific embodiment of the first aspect of the present disclosure, the width of the groove is no greater than 4.5 mm.

[0027] In a specific embodiment of the first aspect of the present disclosure, the display module also includes a protective portion, which is connected to the first supporting layer so that the orthographic projection of the groove on the display panel is a closed ring, and part of the edge of the display panel is located within the orthographic projection of the groove on the surface of the display panel.

[0028] In the above solution, the edge of the structure formed by the protection layer and the first supporting layer will extend beyond the edge of the display panel, thereby further reducing the risk of the edge of the display panel being damaged by collision.

[0029] In a specific embodiment of the first aspect of the present disclosure, the protection part and the first supporting layer are an integrated structure. In this way, the protection part and the first supporting layer are in the same layer and made of the same material, which can simplify the installation cost of the protection part and the first supporting layer.

[0030] In a specific implementation of the first aspect of the present disclosure, the display panel is a foldable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is a schematic diagram of the planar structure of a display module provided by an embodiment of the present disclosure.

[0032] Figure 2 for Figure 1 The display module is shown in a cross-sectional view along MN.

[0033] Figure 3 for Figure 1 A schematic diagram of the planar structure of a display panel of a display module is shown.

[0034] Figure 4 for Figure 3 The display panel is shown in a cross-sectional view along line M1 - N1 .

[0035] Figure 5 Shown is a cross-sectional view of a partial area of ​​a display module provided by an embodiment of the present disclosure under a certain design.

[0036] Figure 6 Shown is a cross-sectional view of a portion of a display module provided by an embodiment of the present disclosure under another design.

[0037] Figure 7 Shown is a schematic diagram of a planar structure of a display module provided by an embodiment of the present disclosure under another design.

[0038] Figure 8 Shown is a schematic diagram of a planar structure of a display module provided by an embodiment of the present disclosure under another design.

[0039] Description of reference numerals:

[0040] 10-display panel; 11-display area; 12-non-display area; 13-bonding area; 14-positioning area; 20-first supporting layer; 20a-first supporting edge; 21-groove; 22-protective portion; 30-glue layer; 30a-first glue layer edge; 40-second supporting layer; 40a-second supporting edge; 100-substrate; 200-display function layer; 210-light-emitting device; 211-first electrode; 212-light-emitting function layer; 213-second electrode; 300-packaging structure; 310-first packaging layer; 320-second packaging layer; 330-third packaging layer; 400-blocking dam. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification. It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0042] When a display device such as a display panel of a mobile phone is assembled with a structure such as a middle frame, at least part of the edge of the display panel needs to be exposed so that the assembly equipment can identify the specific position of the actual panel, thereby ensuring the assembly accuracy. However, because part of the edge of the display panel is exposed, the display panel is easily affected by external forces such as collisions with foreign objects, thereby causing damage to the film layer of the display panel.

[0043] In order to achieve better display effects, the display panel will be designed with a narrow frame, especially for foldable screens (foldable display panels), because of higher assembly precision requirements, which will further require a narrower frame. In the case of a narrow frame, the leaking part of the display panel will be closer to the inside of the display panel, for example, the area of ​​the display panel with the barrier dam will be suspended in the air. When subjected to external force, this will make the internal film layer of the display panel more easily damaged, thereby reducing the yield of the display panel.

[0044] In view of this, the present disclosure provides a display module to at least solve the above technical problems. The display module includes a display panel 10 and a first supporting layer 20. The display panel 10 includes a display area 11 and a non-display area 12 located outside the display area 11. The non-display area 12 is provided with a blocking dam 400 surrounding the display area 11. The first supporting layer 20 is located on the non-display side of the display panel 10, and the non-display side is the side away from the display side. The first supporting layer 20 includes a first supporting edge 20a, and the orthographic projection of the first supporting edge 20a on the surface where the display panel 10 is located is located inside the display panel 10. In the cross section of the display panel 10 in the thickness direction, the distance from the first supporting edge 20a to the edge of the display panel 10 is not greater than the distance from the edge of the side of the blocking dam 400 away from the display area 11 to the edge of the display panel 10. The distance here refers to the distance in the direction perpendicular to the extension direction of the edge of the display panel. In the display panel, the area of ​​the display panel provided with the barrier dam can be supported by the first supporting layer, so that when subjected to external force, stress concentration and damage to the film layer of the display panel near the barrier dam can be avoided, thereby ensuring the yield of the display panel.

[0045] The structure of the display module in at least one embodiment of the present disclosure is described below in conjunction with the accompanying drawings. In addition, in these drawings, a spatial rectangular coordinate system is established with the surface where the display panel is located (e.g., its display surface) as a reference to clearly show the positional relationship of each structure in the display module. In this spatial rectangular coordinate system, the X-axis and the Y-axis are parallel to the surface where the display panel is located, and the Z-axis is perpendicular to the surface where the display panel is located.

[0046] like Figures 1 to 4As shown, the display module includes a display panel 10 and a first supporting layer 20. The plane area of ​​the display panel 10 can be divided into a display area 11 and a non-display area 12 located outside the display area 11. For example, the non-display area 12 surrounds the display area 11, and the display area 11 is used to arrange pixel units (whose physical structure is the light-emitting device described below) to realize image display. The display panel 10 is provided with a barrier dam 400 located in the non-display area 12, and the barrier dam 400 surrounds the display area 11. The first supporting layer 20 is located on the non-display side of the display panel 10. The first supporting layer 20 includes a first supporting edge 20a, and the orthographic projection of the first supporting edge 20a on the surface where the display panel 10 is located is located inside the display panel 10. The first supporting edge 20a can be understood as the edge with the smallest distance between the first supporting layer 20 and the barrier dam 400 in the cross section in the thickness direction of the display panel 10.

[0047] For example, the non-display area 12 includes a bonding area 13, and the bonding area 13 is used to set a bonding terminal (which may be called a pad, etc.) to connect with an external circuit structure (such as a flexible circuit board, a driving chip, etc.).

[0048] For example, the distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10 is not greater than the distance D1 between the barrier dam 400 and the edge of the display panel 10. In this way, the area of ​​the display panel 10 provided with the barrier dam 400 can be supported by the first supporting layer 20, so that when subjected to external force, the film layer of the display panel 10 located near the barrier dam 400 can be prevented from being damaged due to stress concentration, thereby ensuring the yield of the display panel 10.

[0049] In at least one embodiment of the present disclosure, Figures 1 to 4 As shown, the display panel 10 further includes a substrate 100 and a packaging structure 300. The substrate 100 is divided into a display area 11 and a non-display area 12. The substrate 100 carries a barrier dam 400. The packaging structure 300 is located on one side of the substrate 100 and extends from the display area 11 to the non-display area 12, wherein the barrier dam 400 is located between the packaging structure 300 and the substrate 100. The packaging structure 300 covers the barrier dam 400, so the barrier dam 400 will change the film layer distribution of the packaging structure 300, so that the packaging structure 300 is more likely to be damaged by stress concentration when subjected to external force. In the above solution, after the first support layer 20 supports this position, the probability of shape deformation in the area where the barrier dam 400 is located can be reduced or the degree of deformation can be alleviated, thereby reducing the risk of stress concentration in the packaging structure 300 at this position.

[0050] In at least one embodiment of the present disclosure, Figures 1 to 4As shown, the display panel 10 further includes a display function layer 200 , which is located between the encapsulation structure 300 and the substrate 100 and in the display area 11 . The display function layer 200 includes a plurality of light-emitting devices 210 .

[0051] For example, the light emitting device 210 may include a first electrode 211, a light emitting functional layer 212, and a second electrode 213 sequentially stacked on the substrate 100, and the encapsulation structure 300 may encapsulate and protect the film layers of the light emitting device 210. For example, the first electrode 211 may be an anode, and the second electrode 213 may be a cathode.

[0052] For example, the substrate 100 may include a driving circuit layer, the driving circuit layer includes a pixel driving circuit, and the pixel driving circuit is connected to the corresponding light-emitting device to control the light-emitting state of the light-emitting device 210. The driving circuit layer includes a transistor layer, and the transistor layer includes an active layer, a gate insulating layer, a gate layer, an interlayer dielectric layer, a source-drain electrode layer, and a planar layer. The active layer, the gate layer, and the source-drain electrode layer are structures in a thin film transistor (TFT). The gate insulating layer, the interlayer dielectric layer, the planar layer, etc. are used to define the film layer positions of the active layer, the gate layer, the source-drain electrode layer, and the film layer positions between these structures and other elements (such as an anode). For example, the transistor layer also includes structures such as capacitors and wiring.

[0053] For example, in at least one embodiment of the present disclosure, the dielectric layer includes one or more of a gate insulating layer, an interlayer dielectric layer, and a planar layer. It should be noted that, depending on the specific materials of the gate insulating layer, the interlayer dielectric layer, and the planar layer (the planar layer can be an inorganic layer or an organic layer), the dielectric layer can be an inorganic layer or an organic layer; in addition, when the dielectric layer is an inorganic layer, stress concentration is more likely to occur due to the relatively dense characteristics of the inorganic material, and when the solution of the present disclosure is adopted, the stress concentration problem can be alleviated to a greater extent.

[0054] In at least one embodiment of the present disclosure, Figures 1 to 4 As shown, the encapsulation structure 300 includes a first encapsulation layer 310, which extends from the display area 11 to the non-display area 12 and covers the blocking dam 400 and the light-emitting device 210, thereby encapsulating and protecting the light-emitting device 210 while preventing external water, oxygen, etc. from entering the display area from the side of the blocking dam 400 away from the display area.

[0055] Similarly, such a structure is also applicable to a display panel with an isolation structure.

[0056] In at least one embodiment of the present disclosure, Figures 1 to 4As shown, the first encapsulation layer 310 is an inorganic film layer. The inorganic film layer has a high degree of density to encapsulate and protect the internal structure of the display panel 10. Accordingly, the inorganic film layer is easily damaged due to stress concentration, especially at the location where the barrier dam 400 is located. The first encapsulation layer 310 changes the film shape due to covering the barrier dam 400, which makes stress concentration more likely to occur. In the solution of the present disclosure, this problem can be solved by supporting the location where the barrier dam 400 of the display panel 10 is located.

[0057] For example, the material of the first encapsulation layer 310 may be silicon oxide, silicon nitride, silicon oxynitride, or the like.

[0058] In at least one embodiment of the present disclosure, Figure 4 As shown, the encapsulation structure 300 further includes a second encapsulation layer 320 and a third encapsulation layer 330, the second encapsulation layer 320 and the third encapsulation layer 330 are located on the side of the first encapsulation layer 310 facing away from the substrate 100, and the second encapsulation layer 320 is located between the first encapsulation layer 310 and the third encapsulation layer 330. The second encapsulation layer 320 and the third encapsulation layer 330 extend from the display area 11 to the non-display area 12, the second encapsulation layer 320 is located on the side of the barrier dam 400 facing the display area 11, and the third encapsulation layer 330 covers the barrier dam 400 to be connected to the first encapsulation layer 310. At the location where the barrier dam 400 is located, the second encapsulation layer 320 changes the film shape due to covering the barrier dam 400, so that stress concentration is more likely to occur. In the solution of the present disclosure, this problem can be solved by supporting the location where the barrier dam 400 of the display panel 10 is located.

[0059] In at least one embodiment of the present disclosure, Figure 4 As shown, the second encapsulation layer 320 is an organic film layer with good flatness, so as to facilitate the arrangement of other functional structures such as a touch structure on the encapsulation structure 300, and the second encapsulation layer 320 can have a certain flexibility to release stress, thereby reducing the risk of stress concentration in the first encapsulation layer 310 and the second encapsulation layer 320; the third encapsulation layer 330 is an inorganic film layer. For example, the material of the third encapsulation layer 330 can be silicon oxide, silicon nitride, silicon oxynitride, etc.

[0060] In at least one embodiment of the present disclosure, Figure 2 As shown, the distance D1 between the edge of the side of the barrier dam 400 away from the display area 11 and the edge of the display panel 10 is not greater than 350 microns. Under the condition of this numerical range, the display panel 10 can present a narrow frame as a whole, and the portion of the display panel 10 located at the barrier dam 400 away from the display area 11 has a sufficient width to buffer external stress and reduce the risk of cracks extending to the inner area of ​​the display panel 10 when the edge of the display panel 10 is damaged.

[0061] For example, the distance D1 from the edge of one side of the barrier dam 400 away from the display area 11 to the edge of the display panel 10 is 200 microns to 350 microns, specifically, 210 microns, 220 microns, 235 microns, 250 microns, 260 microns, 270 microns, 280 microns, 290 microns, 300 microns, 310 microns, 320 microns, 330 microns, 340 microns, etc. For example, further, the distance D1 from the barrier dam 400 to the edge of the display panel 10 is 235 microns to 350 microns, so that while further ensuring a narrow frame, the portion of the display panel 10 located at the barrier dam 400 away from the display area 11 has a more sufficient width to buffer external stress.

[0062] In at least one embodiment of the present disclosure, Figure 2 As shown, the distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10 is not greater than 150 microns. Under the condition of this numerical range, it can be ensured that the first supporting layer 20 supports the position of the display panel 10 where the barrier dam 400 is provided, and sufficient space can still be reserved for assembling (such as position identification, alignment, etc.) the display panel 10.

[0063] In at least one embodiment of the present disclosure, Figure 2 As shown, the display module may further include a glue layer 30, the glue layer 30 is located between the display panel 10 and the first supporting layer 20, the glue layer 30 includes a first glue layer edge 30a, the orthographic projection of the first glue layer edge 30a on the surface where the display panel 10 is located is located inside the display panel 10, and the distance D3 between the first glue layer edge 30a of the glue layer 30 and the edge of the display panel 10 is smaller than the distance D1 between the edge of the side of the barrier dam 400 away from the display area 11 and the edge of the display panel 10. In this display panel, the area of ​​the display panel 10 where the barrier dam 400 is provided can be supported by the glue layer 30, so that when subjected to external force, the film layer of the display panel 10 located near the barrier dam 400 can be prevented from being damaged due to stress concentration, thereby ensuring the yield of the display panel 10; in addition, the supporting force provided by the first supporting layer 20 can also be transmitted to the display panel 10 through the glue layer 30.

[0064] In some embodiments of the present disclosure, Figure 5 As shown, the distance D3 between the first glue layer edge 30a of the glue layer 30 and the edge of the display panel 10 is equal to the distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10. In this way, it can be ensured that the first supporting layer 20 provides maximum support to the first glue layer edge 30a of the glue layer 30, so as to improve the supporting effect of the glue layer 30 on the display panel 10.

[0065] In other embodiments of the present disclosure, Figure 6 As shown, the distance D3 between the first glue layer edge 30a of the glue layer 30 and the edge of the display panel 10 is smaller than the distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10. In this way, while ensuring that the area of ​​the display panel 10 provided with the barrier dam 400 is supported, a larger distance can be provided between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10, so that more of the display panel 10 is exposed for easy positioning during assembly; or, while ensuring that the area of ​​the display panel 10 provided with the barrier dam 400 is supported and ensuring that more of the display panel 10 is exposed for easy positioning during assembly, the non-display area 12 of the display panel 10 can be allowed to have a smaller design size (narrower frame).

[0066] In some embodiments of the present disclosure, Figure 6 As shown, the distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10 may be substantially equal to the distance D1 from the edge of the side of the blocking dam 400 away from the display area 11 to the edge of the display panel 10, and the distance D3 between the first glue layer edge 30a of the glue layer 30 and the edge of the display panel 10 is smaller than the distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10, so that the first supporting layer 20 supports the area of ​​the display panel 10 where the blocking dam 400 is provided, while allowing the distance D1 from the edge of the side of the blocking dam 400 away from the display area 11 to the edge of the display panel 10 to have a smaller size, which is conducive to the design of an extremely narrow frame of the display panel.

[0067] In some other embodiments of the present disclosure, please refer to Figure 2 , a distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10 is smaller than a distance D1 from the edge of the side of the blocking dam 400 away from the display area 11 to the edge of the display panel 10, and a distance D3 between the first glue layer edge 30a of the glue layer 30 and the edge of the display panel 10 is smaller than a distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10, so that the first supporting layer 20 supports the area of ​​the display panel 10 where the blocking dam 400 is provided, and a sufficient safety interval (the area represented by the difference between D1 and D2) is reserved to ensure the effect of the support, allowing the distance D1 from the blocking dam 400 to the edge of the display panel 10 to have a relatively small size, which is conducive to the design of an extremely narrow frame of the display panel.

[0068] In at least one embodiment of the present disclosure, Figure 6As shown, the difference between the distance D2 between the first supporting edge 20a of the first supporting layer 20 and the edge of the display panel 10 and the distance D3 between the first glue layer edge 30a of the glue layer 30 and the edge of the display panel 10 is not greater than 50 microns. Under the condition of this numerical range, it can be ensured that the supporting force of the first supporting layer 20 on the glue layer 30 can be transmitted to the first glue layer edge 30a of the glue layer 30, so as to ensure the support of the glue layer 30 on the display panel 10.

[0069] In at least one embodiment of the present disclosure, Figure 6 As shown, the display module also includes a second supporting layer 40 (for example, a supporting film, the English name is Back Plate, abbreviated as BP), the second supporting layer 40 is located between the adhesive layer 30 and the display panel 10, the second supporting layer 40 includes a second supporting edge 40a, and the second supporting edge 40a is connected to the edge of the display panel 10. Similarly, the second supporting edge 40a is flush with the edge of the display panel 10.

[0070] In at least one embodiment of the present disclosure, the hardness of the first support layer 20 is greater than the hardness of the second support layer 40. For example, the first support layer 20 may include a rigid material such as metal, and the first support layer 20 may be called a support BKT (English name Bracket).

[0071] In at least one embodiment of the present disclosure, it is possible to refer to Figure 1 , the non-display area 12 of the display panel 10 includes a positioning area 14, the portion of the display panel 10 outside the positioning area 14 is located within the orthographic projection of the first supporting layer 20 on the surface where the display panel 10 is located, and the positioning area 14 is located outside the orthographic projection of the first supporting layer 20 on the surface where the display panel 10 is located. In this way, the first supporting layer 20 is configured to only leak out the positioning area 14 of the display panel 10 to ensure assembly positioning, and the first supporting edge 20a of the first supporting layer 20 will exceed the edge of the other parts of the display panel 10 except the positioning area 14, thereby reducing the risk of the edge of the display panel 10 being damaged by collision.

[0072] In at least one embodiment of the present disclosure, Figure 7 As shown, the first supporting layer 20 includes a groove 21, and the positioning area 14 of the display panel 10 coincides with the orthographic projection of the groove 21 on the surface where the display panel 10 is located, or the positioning area 14 of the display panel 10 is located within the orthographic projection of the groove 21 on the surface where the display panel 10 is located.

[0073] In at least one embodiment of the present disclosure, Figure 7 As shown, the width D3 of the slot 21 along the circumference of the first supporting layer is no more than 4.5 mm, so that the slot 21 can expose a sufficient size of the first supporting edge 20a for positioning while ensuring that the first supporting layer 20 has sufficient supporting area for the display panel 10.

[0074] In at least one embodiment of the present disclosure, Figure 8 As shown, the display module also includes a protection portion 22, which is connected to the first supporting layer 20 so that the orthographic projection of the groove on the display panel 10 is a closed ring, and part of the edge of the display panel 10 is located within the orthographic projection of the groove on the surface where the display panel 10 is located.

[0075] In the above solution, the edge of the structure formed by the protective layer and the first supporting layer 20 will extend beyond the edge of the display panel 10 , thereby further reducing the risk of the edge of the display panel 10 being damaged by collision.

[0076] In at least one embodiment of the present disclosure, Figure 8 As shown, the protection part 22 and the first supporting layer 20 are an integrated structure. In this way, the protection part 22 and the first supporting layer 20 are in the same layer and made of the same material, which can simplify the installation cost of the protection part 22 and the first supporting layer 20.

[0077] In at least one embodiment of the present disclosure, the display panel 10 is a foldable structure. As mentioned above, when the display panel is designed for a folding screen (foldable display panel), due to higher requirements for assembly accuracy, a narrower frame is required, which leads to a greater risk of damage to the film layer due to stress concentration. This problem can be solved by adopting the above solution of the present disclosure.

[0078] The display module can be any product or component with a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigator, etc. For example, the display module can be used in products such as foldable mobile phones and tablets.

[0079] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0080] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0081] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, etc. made within the spirit and principles of this specification should be included in the protection scope of this specification.

Claims

1. A display module, characterized in that: include: The display panel comprises a display area and a non-display area located outside the display area, wherein the non-display area is provided with a blocking dam surrounding the display area; A first supporting layer, located on a non-display side of the display panel; The first supporting layer comprises a first supporting edge, the orthographic projection of the first supporting edge on the display panel is located within the display panel, and The distance between the orthographic projection of the first supporting edge on the display panel and the edge of the display panel is less than or equal to the distance between the orthographic projection of the edge of the blocking dam away from the display area on the display panel and the edge of the display panel.

2. The display module according to claim 1, characterized in that: The display panel further includes: a substrate, divided into the display area and the non-display area, the substrate carrying the barrier dam; and The packaging structure is located at one side of the substrate and extends from the display area to the non-display area, wherein the blocking dam is located between the packaging structure and the substrate.

3. The display module according to claim 2, characterized in that: The display panel further includes a display function layer, which is located between the packaging structure and the substrate and in the display area, and includes a plurality of light-emitting devices.

4. The display module according to claim 3, characterized in that: The encapsulation structure includes a first encapsulation layer extending from the display area to the non-display area and covering the barrier dam and the light emitting device.

5. The display module according to claim 4, characterized in that: The first encapsulation layer is an inorganic film layer.

6. The display module according to claim 4, characterized in that: The encapsulation structure further includes a second encapsulation layer and a third encapsulation layer, wherein the second encapsulation layer and the third encapsulation layer are located on a side of the first encapsulation layer away from the substrate, and the second encapsulation layer is located between the first encapsulation layer and the third encapsulation layer, and The second encapsulation layer and the third encapsulation layer extend from the display area to the non-display area, the second encapsulation layer is located on a side of the blocking dam facing the display area, and the third encapsulation layer covers the blocking dam to be connected to the first encapsulation layer.

7. The display module according to claim 6, characterized in that: The second encapsulation layer is an organic film layer, and the third encapsulation layer is an inorganic film layer.

8. The display module according to any one of claims 1 to 7, characterized in that: The distance between the edge of the barrier dam away from the display area and the edge of the display panel is less than or equal to 350 micrometers; Preferably, a distance between an edge of a side of the barrier dam away from the display area and an edge of the display panel is 200 micrometers to 350 micrometers.

9. The display module according to any one of claims 1 to 7, characterized in that: A distance between the first supporting edge of the first supporting layer and an edge of the display panel is less than or equal to 150 micrometers.

10. The display module according to any one of claims 1 to 7, characterized in that: Also includes a glue layer, wherein the glue layer is located between the display panel and the first supporting layer, the glue layer includes a first glue layer edge, and the orthographic projection of the first glue layer edge on the display panel is located inside the display panel, and A distance between an edge of the first glue layer of the glue layer and an edge of the display panel is smaller than a distance between an edge of the barrier dam away from the display area and an edge of the display panel.

11. The display module according to claim 10, characterized in that: The distance between the edge of the glue layer and the edge of the display panel is equal to the distance between the edge of the first supporting layer and the edge of the display panel.

12. The display module according to claim 10, characterized in that: The distance between the edge of the glue layer and the edge of the display panel is smaller than the distance between the edge of the first supporting layer and the edge of the display panel.

13. The display module according to claim 12, characterized in that: The difference between the distance between the edge of the first supporting layer and the edge of the display panel and the distance between the edge of the glue layer and the edge of the display panel is less than or equal to 50 micrometers.

14. The display module according to claim 10, characterized in that: It also includes a second supporting layer, where the second supporting layer is located between the glue layer and the display panel, and the second supporting layer includes a second supporting edge, where the second supporting edge is flush with the edge of the display panel.

15. The display module according to claim 14, characterized in that: The hardness of the first supporting layer is greater than the hardness of the second supporting layer.

16. The display module according to claim 14, characterized in that: The non-display area of ​​the display panel includes a positioning area, and The portion of the display panel located outside the positioning area is located within the orthographic projection of the first supporting layer on the display panel, and the positioning area is located outside the orthographic projection of the first supporting layer on the display panel.

17. The display module according to claim 16, characterized in that: The first supporting layer includes a groove, the positioning area of ​​the display panel coincides with the orthographic projection of the groove on the surface where the display panel is located, or the positioning area of ​​the display panel is located within the orthographic projection of the groove on the surface where the display panel is located; Preferably, the width of the slot along the circumference of the first supporting layer is less than or equal to 4.5 mm.

18. The display module according to claim 17, characterized in that: It also includes a protection portion, wherein the protection portion is connected to the first supporting layer so that the orthographic projection of the groove on the display panel is a closed ring, and Part of the edge of the display panel is located within the orthographic projection of the groove on the display panel.

19. The display module according to claim 18, characterized in that: The protection portion and the first supporting layer are an integrated structure.

20. The display module according to claim 1, characterized in that: The display panel is a foldable structure.

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