Display module, manufacturing method therefor and display device

Abstract

A display module, a manufacturing method therefor, and a display device. The display module (100) comprises: a display panel (110), a protective layer (120), and an encapsulation layer (130). The display panel (110) comprises a display area (112) and a binding area (113) connected to the display area; the protective layer (120) covers the outer side of the binding area (113); the encapsulation layer (130) is arranged around the periphery of the display panel. One of the protective layer (120) and the encapsulation layer (130) is provided with positioning protrusions (140), and the other one thereof is provided with positioning grooves (150), the positioning protrusions (140) being embedded in the positioning grooves (150).

Description

Display module, manufacturing method thereof, and display device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 30, 2023, with application number 202311418326.1 and invention name “A display module, its manufacturing method, and display device”, the content of which should be understood as incorporated into this application by reference. Technical Field

[0002] The embodiments of the present disclosure relate to, but are not limited to, the technical field of display devices, and in particular to a display module, a manufacturing method thereof, and a display device. Background Art

[0003] Display modules and display devices are widely used, especially OLED screens, which are widely used due to their advantages such as self-luminescence, low power consumption, lightness, flexibility, brilliant colors, high contrast, and fast response speed. However, since OLED materials themselves are afraid of water and oxygen, the display panel needs to be encapsulated.

[0004] Currently, after encapsulating the periphery of the display panel, the contact surface force between the encapsulation layer and the display panel is often poor, and displacement is easily caused under the action of external force. The poor contact surface force between the two increases the risk of defects.

[0005] Summary of the Invention

[0006] The following is an overview of the subject matter described in detail in this disclosure. This overview is not intended to limit the scope of the claims.

[0007] Embodiments of the present disclosure provide a display module, a manufacturing method thereof, and a display device.

[0008] In a first aspect, an embodiment of the present disclosure provides a display module, comprising:

[0009] The display panel comprises a display area and a binding area connected to the display area;

[0010] a protective layer covering the outer side of the binding area;

[0011] An encapsulation layer is arranged around the display panel;

[0012] Wherein, one of the protection layer and the packaging layer is provided with a positioning protrusion, and the other is provided with a positioning groove, and the positioning protrusion is embedded in the positioning groove.

[0013] In an exemplary embodiment of the present disclosure, when the protective layer is provided with a positioning protrusion, a connection area between the positioning protrusion and the protective layer is smaller than a projection area of ​​the positioning protrusion on the protective layer.

[0014] In an exemplary embodiment of the present disclosure, when the protective layer is provided with a positioning protrusion, a height of the positioning protrusion relative to the protective layer is less than or equal to 300 um.

[0015] In an exemplary embodiment of the present disclosure, a maximum width of a projection surface of the positioning protrusion on the protective layer is less than or equal to 300 um.

[0016] In an exemplary embodiment of the present disclosure, there are a plurality of positioning protrusions, and the plurality of positioning protrusions are disposed on the protection layer or the encapsulation layer.

[0017] In an exemplary embodiment of the present disclosure, two adjacent positioning protrusions are spaced apart, and the spacing distance is less than or equal to 5 um.

[0018] In an exemplary embodiment of the present disclosure, any two positioning protrusions may have the same or different shapes.

[0019] In an exemplary embodiment of the present disclosure, the cross-sectional shape of the positioning protrusion is at least one of T-shaped, L-shaped, rectangular, circular, trapezoidal, triangular and arc-shaped.

[0020] In an exemplary embodiment of the present disclosure, the positioning protrusion is connected to the positioning groove by printing.

[0021] In an exemplary embodiment of the present disclosure, the display module further includes an adhesive layer and a cover plate, the adhesive layer bonds the cover plate to the display surface of the display panel, and the height sum of the positioning protrusion and the protective layer is less than the distance between the display panel and the cover plate.

[0022] In an exemplary embodiment of the present disclosure, when the protective layer is provided with the positioning protrusion, the positioning protrusion is connected to the protective layer by printing.

[0023] In an exemplary embodiment of the present disclosure, when the protective layer is provided with the positioning protrusion, the positioning protrusion and the protective layer are printed and formed integrally.

[0024] In an exemplary embodiment of the present disclosure, the protective layer and the positioning protrusion are made of the same or different materials.

[0025] In a second aspect, an embodiment of the present disclosure provides a method for manufacturing a display module, the method comprising:

[0026] Disposing a protective layer on the binding area of ​​the display panel, wherein the protective layer is formed by printing or coating;

[0027] Adhere the cover plate to the display surface of the display panel through the adhesive layer, print a positioning protrusion on the side of the protective layer away from the binding area, and bend the binding area;

[0028] A packaging layer is printed around the display panel so that a positioning groove is formed on the packaging layer to match the positioning protrusion.

[0029] In an exemplary embodiment of the present disclosure, the steps of bonding the cover plate to the display surface of the display panel through the adhesive layer, printing a positioning protrusion on a side of the protective layer away from the binding area, and bending the binding area include:

[0030] Adhere the cover plate to the display surface of the display panel via the adhesive layer;

[0031] bending the binding area provided with the protective layer;

[0032] The positioning protrusion is printed on a side of the protective layer away from the protective layer.

[0033] In an exemplary embodiment of the present disclosure, the steps of bonding the cover plate to the display surface of the display panel through the adhesive layer, printing a positioning protrusion on a side of the protective layer away from the binding area, and bending the binding area include:

[0034] Printing the positioning protrusion on a side of the protective layer away from the binding area;

[0035] Adhere the cover plate to the display surface of the display panel via the adhesive layer;

[0036] The binding area where the protective layer and the positioning protrusion are bent is provided.

[0037] In a third aspect, an embodiment of the present disclosure provides a display device, comprising the display module provided in the first aspect.

[0038] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 shows a schematic structural diagram of a display module provided by an embodiment of the present disclosure.

[0040] FIG2 shows a schematic structural diagram of a display module provided by another embodiment of the present disclosure.

[0041] FIG3 is a schematic structural diagram showing a T-shaped cross section of a positioning protrusion of a display module provided by an embodiment of the present disclosure.

[0042] FIG4 is a schematic structural diagram showing a positioning protrusion of a display module provided by an embodiment of the present disclosure, in which the cross section is circular.

[0043] FIG5 is a schematic structural diagram showing a positioning protrusion of a display module provided by an embodiment of the present disclosure, in which the cross section is a trapezoid.

[0044] FIG6 shows a flow chart of a method for manufacturing a display module provided by an embodiment of the present disclosure.

[0045] FIG7 shows a schematic structural diagram of step S100 .

[0046] FIG8 shows a flowchart of steps S212 to S216 of the display module manufacturing method provided by an embodiment of the present disclosure.

[0047] FIG9 shows a schematic structural diagram of step S212 in the display module manufacturing method provided by an embodiment of the present disclosure.

[0048] FIG10 shows a schematic structural diagram of step S214 in the display module manufacturing method provided by an embodiment of the present disclosure.

[0049] FIG11 shows a schematic structural diagram of step S216 in the display module manufacturing method provided by an embodiment of the present disclosure.

[0050] FIG. 12 shows a flowchart of steps S232 to S236 of the display module manufacturing method provided by an embodiment of the present disclosure.

[0051] FIG13 shows a schematic structural diagram of step S232 in the display module manufacturing method provided by an embodiment of the present disclosure.

[0052] FIG14 shows a schematic structural diagram of step S234 in the display module manufacturing method provided by an embodiment of the present disclosure.

[0053] FIG15 shows a schematic structural diagram of step S236 in the display module manufacturing method provided by an embodiment of the present disclosure.

[0054] FIG. 16 shows a structural diagram of step S300 corresponding to steps S212 to S216 of the display module manufacturing method provided by an embodiment of the present disclosure.

[0055] FIG17 shows a structural diagram of step S300 corresponding to steps S232 to S236 of the display module manufacturing method provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] The specific embodiments of the present disclosure are further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present disclosure and are merely exemplary, but are not intended to limit the scope of the present disclosure. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other in any manner.

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0058] All directional indications in the embodiments of the present disclosure are only used to explain the relative position relationship, movement status, etc. between multiple components in a certain specific posture. When the specific posture changes, the directional indication also changes accordingly.

[0059] In this disclosure, unless otherwise expressly specified or limited, the terms "connect," "fix," and the like should be understood in a broad sense. For example, "fix" may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection, or an electrical connection; a direct connection, or an indirect connection through an intermediate medium, or internal communication between two elements or an interaction between two elements, unless otherwise expressly specified. A person of ordinary skill in the art will understand the meaning of the above terms in this disclosure based on the specific circumstances.

[0060] In addition, in the present disclosure, descriptions such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between any embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present disclosure.

[0061] The terms “about”, “approximately” and the like in the present disclosure do not strictly define the limits and allow for numerical values ​​within a range of process and measurement errors.

[0062] Display modules and display devices are widely used, especially OLED screens, which are widely used due to their advantages such as self-luminescence, low power consumption, lightness, flexibility, brilliant colors, high contrast, and fast response speed. However, since OLED materials themselves are afraid of water and oxygen, the display panel needs to be encapsulated.

[0063] Currently, after encapsulating the periphery of a display panel, it is easy for the encapsulation layer and the display panel to have poor contact surface force, which can easily cause displacement under the action of external forces. The poor contact surface force between the two increases the risk of defects. The display module, its manufacturing method, and the display device provided by the embodiments of the present disclosure can improve the above-mentioned problem. The display module, its manufacturing method, and the display device provided by the embodiments of the present disclosure can improve the force between the encapsulation layer and the display panel when subjected to external forces, reducing the risk of displacement between the encapsulation layer and the display panel when the entire display module is subjected to external forces, thereby reducing the risk of damage to the display module and increasing the service life of the entire display module.

[0064] The present disclosure is described below with reference to exemplary embodiments in conjunction with the accompanying drawings:

[0065] Referring to Figures 1 and 2, an embodiment of the present disclosure provides a display module 100. The display module 100 provided by the embodiment of the present disclosure can reduce the risk of displacement of the encapsulation layer 130 and the display panel 110 when the entire display module 100 is subjected to external force, thereby reducing the risk of damage to the display module 100 and improving the service life of the entire display module 100.

[0066] In the embodiment of the present disclosure, the display module 100 includes: a display panel 110, a protective layer 120 and an encapsulation layer 130, the display panel 110 includes a display area 112 and a binding area 113 connected to the display area 112; the protective layer 120 covers the outside of the binding area 113; the encapsulation layer 130 is arranged around the display panel 110; wherein, in the protective layer 120 and the encapsulation layer 130, one is provided with a positioning protrusion 140, and the other is provided with a positioning groove 150, and the positioning protrusion 140 is embedded in the positioning groove 150.

[0067] In the disclosed embodiment, the display panel 110 includes a display area 112 and a binding area 113. The binding area 113 is bent relative to the display area 112. The electronic components of the display panel 110 can be arranged within the binding area 113, that is, the electronic components of the display panel 110 are arranged inside the binding area 113. Placing the electronic components of the display panel 110 inside the binding area 113 facilitates the arrangement of the electronic components. Placing all electronic components on one side of the non-display surface 115 of the display area 112 gives the entire display panel 110 a neat appearance.

[0068] In an exemplary embodiment, the binding area 113 is substantially in the shape of an arc, the inner side of the binding area 113 refers to the inside of the arc, and the outer side of the binding area 113 refers to the outside of the arc.

[0069] The protective layer 120 covers the outside of the binding area 113, that is, the protective layer 120 is completely attached to the outside of the binding area 113. The protective layer 120 provides an encapsulation and protection for the outside of the binding area 113. The protective layer 120 can be provided on the outside of the binding area 113 through a coating process, or can be provided on the outside of the protective layer 120 through a printing process, or can be provided on the outside of the binding area 113 through other methods. The process for providing the protective layer 120 on the binding area 113 is not limited.

[0070] In addition, the four sides of the display panel 110 refer to all sides except the display surface 114 of the display panel 110. The encapsulation layer 130 is arranged on the four sides of the display panel 110, which means that the encapsulation layer 130 can be arranged on all sides except the display surface 114 of the display panel 110. The encapsulation layer 130 protects the other sides of the display panel 110 and plays a waterproof and anti-oxidation role.

[0071] A positioning protrusion 140 is provided on one of the protective layer 120 and the encapsulation layer 130, and a positioning groove 150 is provided on the other one. Through the cooperation of the positioning protrusion 140 and the positioning groove 150, the contact area between the binding area 113 and the encapsulation layer 130 is enhanced, thereby increasing the effective area between the binding area 113 and the encapsulation layer 130. Under the action of external force, the effective force between the protective layer 120 and the encapsulation layer 130 is increased through the cooperation of the positioning protrusion 140 and the positioning groove 150, which can reduce the relative displacement between the encapsulation layer 130 and the binding area 113, thereby reducing the risk of damage to the display module 100 and improving the service life of the entire display module 100.

[0072] The positioning protrusion 140 may be provided on the protective layer 120, and the positioning groove 150 may be provided on the encapsulation layer 130. Alternatively, the positioning protrusion 140 may be provided on the encapsulation layer 130, and the positioning groove 150 may be provided on the protective layer 120. In the embodiments disclosed herein, for ease of description, the positioning protrusion 140 is provided on the protective layer 120, and the positioning groove 150 is provided on the encapsulation layer 130 as an example. The same applies to the embodiment in which the positioning protrusion 140 is provided on the encapsulation layer 130, and the positioning groove 150 is provided on the protective layer 120.

[0073] Regarding the shapes of the positioning protrusion 140 and the positioning groove 150, they should be compatible, that is, they should have shapes that can match each other. For example, if the outer shape of the positioning protrusion 140 is spherical, then the shape of the positioning groove 150 should also be spherical. If the positioning protrusion 140 is trapezoidal, then the positioning groove 150 should also be trapezoidal. Of course, in addition to the regular shapes mentioned above, the positioning protrusion 140 and the positioning groove 150 can also have irregular shapes that can match each other.

[0074] The cross-sectional shape of the positioning protrusion 140 can be at least one of a T-shape (as shown in FIG3 ), an L-shape, a rectangle, a circle (as shown in FIG4 ), a trapezoid (as shown in FIG5 ), a triangle, and an arc. In other words, the positioning protrusion 140 can be one of the above shapes, or a combination of multiple of the above shapes, and can be configured based on factors such as the actual structure and shape of the protective layer 120 and the encapsulation layer 130.

[0075] The cross-sectional area of ​​the positioning protrusion 140 refers to the cross-sectional area on a plane perpendicular to the protection layer 120 .

[0076] Similarly, the number of positioning protrusions 140 and positioning grooves 150 can be set according to the size of the binding area 113. When the binding area 113 is relatively large, the number of positioning protrusions 140 and positioning grooves 150 can be set to be larger. When the binding area 113 is relatively small, the number of positioning protrusions 140 and positioning grooves 150 can be set to be smaller.

[0077] In some exemplary embodiments, when the protective layer 120 is provided with the positioning protrusion 140 , the connection area between the positioning protrusion 140 and the protective layer 120 is smaller than the projection area of ​​the positioning protrusion 140 on the protective layer 120 .

[0078] When positioning protrusion 140 is disposed on protective layer 120, positioning groove 150 is disposed on encapsulation layer 130. The connection area between positioning protrusion 140 and protective layer 120 refers to the area of ​​the connection between positioning protrusion 140 and protective layer 120. If the connection area between positioning protrusion 140 and protective layer 120 is smaller than the projected area of ​​positioning protrusion 140 on protective layer 120, it indicates that there is a location on positioning protrusion 140 that is larger than the connection between positioning protrusion 140 and protective layer 120. In other words, on multiple planes parallel to protective layer 120, the cross-sectional area of ​​positioning protrusion 140 on at least one of these planes is larger than the connection area.

[0079] The connection area between the positioning protrusion 140 and the protective layer 120 is smaller than the projection area of ​​the positioning protrusion 140 on the protective layer 120, indicating that in the direction in which the positioning protrusion 140 approaches the protective layer 120, the outer shape of the positioning protrusion 140 is at least partially concave inward, so that when the positioning protrusion 140 is matched with the positioning groove 150, the positioning protrusion 140 can be clamped between the positioning groove 150, which can increase the force between the positioning protrusion 140 and the positioning groove 150, reduce the risk of adverse conditions occurring in the encapsulation layer 130 and the protective layer 120 when subjected to external force, and thereby increase the service life of the entire display module 100.

[0080] In an exemplary embodiment, the outer shape of the positioning protrusion 140 is at least partially concave inward, which means that the positioning protrusion 140 may be partially concave inward in a direction close to the protective layer 120, or the entire outer surface of the positioning protrusion 140 may be concave inward as a whole in a direction close to the protective layer 120.

[0081] Of course, the outer peripheral surface of the positioning protrusion 140 may have multiple inwardly recessed areas in the direction close to the protective layer 120. The more inwardly recessed areas there are, the greater the force between the positioning protrusion 140 and the positioning groove 150, and the lower the risk of adverse conditions occurring between the packaging layer 130 and the protective layer 120 when subjected to external force.

[0082] In some embodiments, there are a plurality of positioning protrusions 140 , and the plurality of positioning protrusions 140 are disposed on the protection layer 120 or the encapsulation layer 130 .

[0083] When the positioning protrusions 140 are provided on the protective layer 120 and the positioning grooves 150 are provided on the encapsulation layer 130, multiple positioning protrusions 140 are provided on the protective layer 120. When the positioning protrusions 140 are provided on the encapsulation layer 130 and the positioning grooves 150 are provided on the protective layer 120, multiple positioning protrusions 140 are provided on the encapsulation layer 130. The following description uses the case where multiple positioning protrusions 140 are provided on the protective layer 120 as an example. When multiple positioning protrusions 140 are provided on the encapsulation layer 130, the same can be applied.

[0084] Multiple positioning protrusions 140 are arranged on the protective layer 120. The multiple positioning protrusions 140 can be arranged continuously or at intervals. Continuous arrangement means that two adjacent positioning protrusions 140 can be connected, and interval arrangement means that there is a gap between two adjacent positioning protrusions 140.

[0085] The plurality of positioning protrusions 140 may be arranged in a matrix on the protective layer 120 , or may be arranged in other manners on the protective layer 120 , and the arrangement manner is not limited.

[0086] In an exemplary embodiment, the sizes of the plurality of positioning protrusions 140 may be the same or different, which is not limited in the present disclosure.

[0087] The shapes of any two positioning protrusions 140 may be the same or different. That is, the shapes of the multiple positioning protrusions 140 may all be the same, or the multiple positioning protrusions 140 may have different shapes, such as some positioning protrusions 140 may have a T-shaped cross section, some positioning protrusions 140 may have an L-shaped cross section, some positioning protrusions 140 may have a spherical cross section, some positioning protrusions 140 may have a triangular cross section, or a combination of the above shapes.

[0088] Of course, since the positioning protrusion 140 is embedded in the positioning groove 150 , the shape of the positioning groove 150 should be compatible with the shape and size of the positioning protrusion 140 . Therefore, the shape and size of the positioning groove 150 can be inferred based on the shape and size of the positioning protrusion 140 .

[0089] In some exemplary embodiments, two adjacent positioning protrusions 140 are spaced apart, and the spacing distance is less than or equal to 5 um.

[0090] The size of the entire display module 100 is relatively small. When the spacing distance between two adjacent positioning protrusions 140 is too large, the number of positioning protrusions 140 on the protective layer 120 will be small, which will result in a smaller overall contact area between the positioning protrusions 140 and the positioning grooves 150. The spacing distance between two adjacent positioning protrusions 140 is less than or equal to 5um, which can ensure the contact area between a single positioning protrusion 140 and the positioning groove 150, and can increase the number of positioning protrusions 140, thereby increasing the overall contact area between the positioning protrusions 140 and the positioning grooves 150, which can reduce the risk of displacement of the encapsulation layer 130 and the display panel 110 when the entire display module 100 is subjected to external force, reduce the risk of damage to the display module 100, and thus improve the service life of the entire display module 100.

[0091] The spacing distance between two adjacent positioning protrusions 140 may be one of 1um, 2um, 3um, 4um, and 5um.

[0092] In some exemplary embodiments, the display module 100 further includes an adhesive layer 160 and a cover plate 170 , the adhesive layer 160 bonds the cover plate 170 to the display surface 114 of the display panel 110 , and the height sum of the positioning protrusion 140 and the protective layer 120 is less than the distance between the display panel 110 and the cover plate 170 .

[0093] The adhesive layer 160 is used to bond the cover plate 170 and the display surface 114. The positioning protrusion 140 is arranged on the binding area 113. When the positioning protrusion 140 is formed on the protective layer 120 before the binding area 113 is bent, in order to avoid interference between the positioning protrusion 140 and the cover plate 170, the sum of the heights of the positioning protrusion 140 and the protective layer 120 is less than the distance between the display panel 110 and the cover plate 170, that is, less than the thickness of the adhesive layer 160.

[0094] When manufacturing the display module 100, the cover plate 170 is generally first bonded to the display surface 114 of the display panel 110 via the adhesive layer 160, and then the binding area 113 is bent to the non-display surface 115 of the display panel 110 (the display surface 114 and the non-display surface 115 are located on opposite sides of the display area 112). When the positioning protrusion 140 is provided before the binding area 113 is bent, interference between the positioning protrusion 140 and the cover plate 170 needs to be considered. When the positioning protrusion 140 is provided after the binding area 113 is bent, the height of the positioning protrusion 140 is not subject to the above-mentioned restrictions.

[0095] The height of the positioning protrusion 140 refers to the height of the positioning protrusion 140 protruding from the protective layer 120, that is, the height of the positioning protrusion 140 refers to the height of the positioning protrusion 140 relative to the protective layer 120. The height of the protective layer 120 can be considered as the thickness of the protective layer 120. The sum of the heights of the positioning protrusion 140 and the protective layer 120 is the height of the positioning protrusion 140 relative to the protective layer 120 plus the thickness of the protective layer 120.

[0096] In some exemplary embodiments, the thickness of the adhesive layer 160 is less than or equal to 300 μm, and the thickness of the general protective layer 120 can be ignored. Therefore, the height of the positioning protrusion 140 can be less than or equal to 300 μm, thereby minimizing interference between the positioning protrusion 140 and the cover plate 170.

[0097] Of course, when the binding area 113 is bent first and then the positioning protrusion 140 is set, the height of the positioning protrusion 140 can be set to less than or equal to 300 μm. The height of the positioning protrusion 140 is less than or equal to 300 μm, which can adapt to the size of the entire display module 100. When the positioning protrusion 140 is set relatively large, it will cause the positioning protrusion 140 to protrude outside the encapsulation layer 130. Moreover, the relatively large size of the positioning protrusion 140 will result in a small number of positioning protrusions 140 provided on the protective layer 120, resulting in the encapsulation layer 130 and the protective layer 120 partially experiencing adverse effects when subjected to external force. The height of the positioning protrusion 140 can be set to less than or equal to 300 μm. This ensures the contact area between a single positioning protrusion 140 and the positioning groove 150, and allows the positioning protrusion 140 to be set at as many locations as possible on the protective layer 120, thereby minimizing the risk of adverse effects on the entire display module 100 and thereby increasing the service life of the display module 100.

[0098] The height of the positioning protrusion 140 can be one of 50 um, 100 um, 150 um, 200 um, 250 um, and 300 um. The heights of the plurality of positioning protrusions 140 can be different or the same.

[0099] Regarding the size of a single positioning protrusion 140, the maximum width of the projection of the positioning protrusion 140 on the protective layer 120 is less than or equal to 300 μm. When the size of the positioning protrusion 140 is set larger, the number of positioning protrusions 140 on the protective layer 120 is reduced. Due to the different shapes of the positioning protrusions 140, the maximum spacing between two adjacent positioning protrusions 140 increases, which can easily cause movement between the positioning protrusion 140 and the positioning groove 150 under high force. When the maximum width of the projection of the positioning protrusion 140 on the protective layer 120 is less than or equal to 300 μm, the contact area between the positioning protrusion 140 and the positioning groove 150 is guaranteed, and the number of positioning protrusions 140 is guaranteed. This increases the total contact area between the positioning protrusion 140 and the positioning groove 150, minimizes the risk of defects in the entire display module 100, and thus increases the service life of the display module 100.

[0100] The maximum width of the projection of the positioning protrusion 140 on the protective layer 120 can be 50um, 100um, 150um, 200um, 250um, or 300um. The maximum widths of the projections of the positioning protrusions 140 on the protective layer 120 can be different or the same.

[0101] In some exemplary embodiments, the positioning protrusion 140 is connected to the positioning groove 150 by printing.

[0102] The positioning protrusions 140 and the positioning grooves 150 are connected by printing. In one exemplary embodiment, after the binding area 113 is bent and the positioning protrusions 140 are disposed on the protective layer 120, the encapsulation layer 130 is printed around the display panel 110. This printing method has high precision, allowing the printed material to be embedded in the gap between two adjacent positioning protrusions 140, allowing the printed material to wrap around the positioning protrusions 140, forming the positioning grooves 150 that are embedded in the positioning protrusions 140, thereby increasing the contact area between the positioning protrusions 140 and the positioning grooves 150.

[0103] That is to say, the encapsulation layer 130 is set on the protective layer 120 by printing. During the printing process, since the positioning protrusion 140 protrudes from the protective layer 120, by filling the printing material around the positioning protrusion 140, it can adapt to the shape of the positioning protrusion 140, and form a positioning groove 150 adapted to the positioning protrusion 140 on the encapsulation layer 130. The adaptability of the positioning protrusion 140 and the positioning groove 150 can be improved, and the mismatch between the positioning protrusion 140 and the positioning groove 150 can be minimized, the contact area between the positioning protrusion 140 and the positioning groove 150 can be increased, and the risk of adverse conditions occurring in the entire display module 100 can be reduced as much as possible, thereby improving the service life of the display module 100.

[0104] In some embodiments, when the protective layer 120 is provided with the positioning protrusion 140 , the positioning protrusion 140 is connected to the protective layer 120 by printing.

[0105] When the positioning protrusion 140 is provided after the binding area 113 is bent, the positioning protrusion 140 can be connected to the protective layer 120 by printing. That is, the positioning protrusion 140 and the protective layer 120 are connected by printing. The coating material can be first applied to the outer side of the binding area 113 to form the protective layer 120 outside the binding area 113. The positioning protrusion 140 is then printed on the side of the protective layer 120 away from the binding area 113.

[0106] In other words, in this case, the positioning protrusions 140 and the protective layer 120 are formed separately. The protective layer 120 can be formed by applying a coating material to the binding area 113 before the binding area 113 is bent. After the binding area 113 is bent, the positioning protrusions 140 are printed on the protective layer 120. Finally, the encapsulation layer 130 is printed below the cover plate 170 and around the display panel 110.

[0107] When the positioning protrusion 140 and the protective layer 120 are formed separately, the positioning protrusion 140 and the protective layer 120 can be made of different materials. The protective layer 120 can be made of a coating material, and the positioning protrusion 140 can be made of a printed material. This can be applicable to situations where the height of the positioning protrusion 140 is greater than the gap between the display surface 114 and the cover plate 170. In this case, the coating material is applied to the binding area 113 to form the protective layer 120, and then the binding area 113 is bent. After the binding area 113 is bent, the positioning protrusion 140 is printed on the protective layer 120, and finally the encapsulation layer 130 is printed around the display panel 110.

[0108] In addition, the positioning protrusion 140 and the protective layer 120 can be made of the same material. The protective layer 120 can be first printed in the binding area 113, and then the binding area 113 can be bent. After bending, the positioning protrusion 140 can be printed on the protective layer 120, and finally the encapsulation layer 130 can be printed around the display panel 110.

[0109] In some other exemplary embodiments, when the protective layer 120 is provided with the positioning protrusion 140 , the positioning protrusion 140 and the protective layer 120 are printed and formed integrally.

[0110] The positioning protrusion 140 and the protective layer 120 can be directly formed by printing materials. In this case, it can be applicable to the situation where the sum of the heights of the positioning protrusion 140 and the protective layer 120 is less than the spacing distance between the display surface 114 and the cover plate 170. The protective layer 120 and the positioning protrusion 140 are first printed integrally on the binding area 113. Since the sum of the heights of the positioning protrusion 140 and the protective layer 120 is less than the spacing distance between the display surface 114 and the cover plate 170, the positioning protrusion 140 will not interfere with the cover plate 170.

[0111] In this case, the protective layer 120 and the positioning protrusion 140 can be printed using the same printing material. The protective layer 120 and the positioning protrusion 140 are printed integrally on the outside of the binding area 113, and then the binding area 113 provided with the protective layer 120 and the positioning protrusion 140 is bent. Finally, the encapsulation layer 130 is printed around the display panel 110 to encapsulate the display panel 110.

[0112] In some exemplary implementations, the display module 100 further includes a back film 180 and a gasket 190 . The back film 180 is disposed on the non-display surface 115 of the display area 112 , and the gasket 190 is disposed between the back film 180 and the binding area 113 .

[0113] To sum up, the display module 100 provided by the embodiment of the present disclosure is provided with a positioning protrusion 140 on one of the protective layer 120 and the encapsulation layer 130, and a positioning groove 150 on the other one. Through the cooperation of the positioning protrusion 140 and the positioning groove 150, the contact area between the binding area 113 and the encapsulation layer 130 is enhanced, thereby increasing the effective area between the binding area 113 and the encapsulation layer 130. When subjected to external force, the effective force between the protective layer 120 and the encapsulation layer 130 is increased through the cooperation of the positioning protrusion 140 and the positioning groove 150, which can reduce the relative displacement between the encapsulation layer 130 and the binding area 113, reduce the risk of damage to the display module 100, and thus improve the service life of the entire display module 100.

[0114] The embodiment of the present disclosure also provides a display module manufacturing method. The display module manufacturing method provided by the embodiment of the present disclosure is mainly used to manufacture the above-mentioned display module 100. The display module manufacturing method provided by the embodiment of the present disclosure can reduce the risk of displacement of the encapsulation layer 130 and the display panel 110 when the entire display module 100 is subjected to external force, thereby reducing the risk of damage to the display module 100 and improving the service life of the entire display module 100.

[0115] The specific structure of the display module 100 can be referred to the above description and will not be repeated here. The specific steps of the display module manufacturing method are shown in FIG6 and FIG7 , which can be as follows:

[0116] In step S100 , a protection layer 120 is provided on the binding area 113 .

[0117] The protective layer 120 protects the binding area 113 from water and moisture. The protective layer 120 needs to completely cover the outside of the binding area 113. The protective layer 120 can be formed on the binding area 113 by coating. In one exemplary embodiment, a coating material can be applied to the outside of the binding area 113 to form the protective layer 120. Alternatively, the protective layer 120 can be formed by printing. In one exemplary embodiment, a printed material is printed on the outside of the binding area 113 to form the protective layer 120.

[0118] In step S200 , the cover plate 170 is bonded to the display surface 114 of the display panel 110 via the adhesive layer 160 , a positioning protrusion 140 is printed on a side of the protective layer 120 away from the binding area 113 , and the binding area 113 is bent.

[0119] After installing the protective layer 120, it is necessary to install the protective layer 120 on the binding area 113 and bend the binding area 113. Before bending, the connection between the binding area 113 and the display area 112 is located below the cover plate 170. When installing the positioning protrusion 140, in order to avoid interference between the positioning protrusion 140 and the display panel 110, the size of the positioning protrusion 140 is required. Different methods can be selected according to the size of the positioning protrusion 140. Two methods will be described in detail. Steps S212 to S216 are one method, and steps 321 to S325 are another method.

[0120] Please refer to FIG. 8 , where step S200 may include step S212 , step S214 and step S216 .

[0121] Please refer to FIG. 8 and FIG. 9 , in step S212 , the cover plate 170 is bonded to the display surface 114 of the display panel 110 through the adhesive layer 160 .

[0122] The display panel 110 includes a display area 112 and a binding area 113. The display area 112 has a display surface 114 and a non-display surface 115 disposed opposite each other. A cover plate 170 is first bonded to the display surface 114 of the display panel 110 via an adhesive layer 160. The cover plate 170 protrudes beyond the display surface 114, meaning that the cover plate 170 completely covers the display surface 114 and has a larger area than the display surface 114.

[0123] There is no order between step S100 and step S212, and step S100 may be performed first and then step S212, or step S212 may be performed first and then step S100, or step S100 and step S212 may be performed simultaneously.

[0124] Please refer to FIG. 8 and FIG. 10 , in step S214 , the binding area 113 provided with the protection layer 120 is bent.

[0125] After the protective layer 120 is set, the binding area 113 and the protective layer 120 are bent as a whole so that at least a portion of the binding area 113 can be bent to one side of the non-display surface 115, thereby facilitating the arrangement of electronic components of the display panel 110.

[0126] Please refer to FIG. 8 and FIG. 11 , in step S216 , a positioning protrusion 140 is printed on a side of the protective layer 120 away from the binding area 113 .

[0127] After bending the protective layer 120 and the binding area 113 as a whole, the positioning protrusion 140 is printed on the side of the protective layer 120 away from the binding area 113. This method is suitable for the situation where the height of the positioning protrusion 140 and the protective layer 120 is greater than the spacing distance between the display surface 114 and the cover plate 170, and can avoid interference between the positioning protrusion 140 and the cover plate 170.

[0128] Of course, if the sum of the heights of the positioning protrusion 140 and the protective layer 120 is smaller than the spacing distance between the display surface 114 and the cover plate 170 , the method of steps S212 to S216 can be used.

[0129] Please refer to FIG. 12 . In addition to this, step S200 may further include step S232 , step S234 , and step S236 .

[0130] Please refer to FIG. 12 and FIG. 13 , in step S232 , a positioning protrusion 140 is printed on a side of the protective layer 120 away from the binding area 113 .

[0131] Positioning protrusions 140 can be printed on the outside of the binding area 113 before the binding area 113 is bent. Since the protective layer 120 and the positioning protrusions 140 are provided before the binding area 113 is bent, it is necessary to avoid interference between the positioning protrusions 140 and the cover plate 170. The sum of the heights of the positioning protrusions 140 and the protective layer 120 must be less than the distance between the display surface 114 and the cover plate 170. In other words, if the sum of the heights of the positioning protrusions 140 and the protective layer 120 is less than the distance between the display surface 114 and the cover plate 170, steps S232 to S236 can be used.

[0132] Additionally, the protective layer 120 and the positioning protrusions 140 can be printed integrally, meaning they are simultaneously provided by printing. This can be done in various orders, including printing the protective layer 120 first and then the positioning protrusions 140, or simultaneously. Integrating the protective layer 120 and the positioning protrusions 140 reduces manufacturing steps and improves the positioning accuracy of the positioning protrusions 140 on the protective layer 120.

[0133] Please refer to FIG. 12 and FIG. 14 , in step S234 , the cover plate 170 is bonded to the display surface 114 of the display panel 110 through the adhesive layer 160 .

[0134] The display panel 110 includes a display area 112 and a binding area 113. The display area 112 has a display surface 114 and a non-display surface 115 disposed opposite each other. A cover plate 170 is first bonded to the display surface 114 of the display panel 110 via an adhesive layer 160. The cover plate 170 protrudes from the display surface 114, meaning that the cover plate 170 completely covers the display surface 114 and has a larger area than the display surface 114.

[0135] Please refer to FIG. 12 and FIG. 15 , in step S236 , the binding area 113 provided with the protection layer 120 and the positioning protrusion 140 is bent.

[0136] After printing the positioning protrusion 140 , the binding area 113 , the positioning protrusion 140 and the protective layer 120 are bent as a whole so that at least part of the binding area 113 can be bent to one side of the non-display surface 115 , thereby facilitating the arrangement of electronic components of the display panel 110 .

[0137] That is to say, the embodiment of the present disclosure provides two ways of setting the positioning protrusion 140, wherein steps S312 to S316 can be applicable to two situations: the sum of the heights of the positioning protrusion 140 and the protective layer 120 is less than the spacing distance between the display surface 114 and the cover plate 170, and the sum of the heights of the positioning protrusion 140 and the protective layer 120 is greater than or equal to the spacing distance between the display surface 114 and the cover plate 170, while steps S232 to S236 are only applicable to one situation: the sum of the heights of the positioning protrusion 140 and the protective layer 120 is less than the spacing distance between the display surface 114 and the cover plate 170.

[0138] 6 , 16 and 17 , in step S300 , the encapsulation layer 130 is printed around the display panel 110 , so that the encapsulation layer 130 forms positioning grooves 150 that cooperate with the positioning protrusions 140 .

[0139] The encapsulation layer 130 is set on the protective layer 120 by printing. During the printing process, since the positioning protrusion 140 protrudes from the protective layer 120, by filling the printing material around the positioning protrusion 140, it can adapt to the shape of the positioning protrusion 140, and form a positioning groove 150 adapted to the positioning protrusion 140 on the encapsulation layer 130. The adaptability of the positioning protrusion 140 and the positioning groove 150 can be improved, and the mismatch between the positioning protrusion 140 and the positioning groove 150 can be minimized, the contact area between the positioning protrusion 140 and the positioning groove 150 can be increased, and the risk of adverse conditions occurring in the entire display module 100 can be reduced as much as possible, thereby improving the service life of the display module 100.

[0140] To sum up, the display module manufacturing method provided by the embodiment of the present disclosure enhances the contact area between the binding area 113 and the encapsulation layer 130 by printing the positioning protrusion 140 on the protective layer 120 and then printing the encapsulation layer 130 on the outside of the positioning protrusion 140, thereby increasing the effective area between the binding area 113 and the encapsulation layer 130. Under the action of external force, the acting force between the protective layer 120 and the encapsulation layer 130 is increased by the cooperation between the positioning protrusion 140 and the positioning groove 150, which can reduce the relative displacement between the encapsulation layer 130 and the binding area 113, thereby reducing the risk of damage to the display module 100 and improving the service life of the entire display module 100.

[0141] The present disclosure also provides a display device including the display module 100. The display device may be an interactive display device such as an electronic whiteboard, or a household appliance with a display function, or a wearable device.

[0142] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0143] In addition, the technical solutions between any embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this disclosure.

[0144] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A display module, comprising: A display panel, comprising a display area and a binding area connected to the display area; A protective layer covering the outer side of the binding area; A packaging layer, arranged around the display panel; Wherein, one of the protection layer and the packaging layer is provided with a positioning protrusion, and the other is provided with a positioning groove, and the positioning protrusion is embedded in the positioning groove.

2. The display module according to claim 1, wherein: When the protective layer is provided with a positioning protrusion, a connection area between the positioning protrusion and the protective layer is smaller than a projection area of ​​the positioning protrusion on the protective layer.

3. The display module according to claim 1, wherein: When the protective layer is provided with a positioning protrusion, the height of the positioning protrusion relative to the protective layer is less than or equal to 300 um.

4. The display module according to claim 1, wherein: The maximum width of the projection surface of the positioning protrusion on the protective layer is less than or equal to 300um.

5. The display module according to claim 1, wherein: There are a plurality of positioning protrusions, and the plurality of positioning protrusions are arranged on the protection layer or the packaging layer.

6. The display module according to claim 5, wherein: Two adjacent positioning protrusions are arranged at intervals, and the interval distance is less than or equal to 5um.

7. The display module according to claim 5, wherein: The shapes of any two positioning protrusions are the same or different.

8. The display module according to claim 1, wherein: The cross-sectional shape of the positioning protrusion is at least one of T-shaped, L-shaped, rectangular, circular, trapezoidal, triangular and arc-shaped.

9. The display module according to any one of claims 1 to 8, wherein: The positioning protrusion is printed and connected to the positioning groove.

10. The display module according to any one of claims 1 to 8, wherein: The display module further includes an adhesive layer and a cover plate, the adhesive layer bonds the cover plate and the display surface of the display panel, and the sum of the heights of the positioning protrusion and the protective layer is less than the distance between the display panel and the cover plate.

11. The display module according to any one of claims 1 to 8, wherein: When the protective layer is provided with the positioning protrusion, the positioning protrusion and the protective layer are printed and formed integrally.

12. The display module according to any one of claims 1 to 8, wherein: When the protective layer is provided with the positioning protrusion, the positioning protrusion is connected to the protective layer by printing.

13. The display module according to any one of claims 1 to 8, wherein: The material of the protection layer and the positioning protrusion is the same as or different from that of the positioning protrusion.

14. A method for manufacturing a display module, comprising: Disposing a protective layer in the binding area of ​​the display panel, wherein the protective layer is formed by printing or coating; Adhere the cover plate to the display surface of the display panel through the adhesive layer, print a positioning convex portion on a side of the protective layer away from the binding area, and bend the binding area; A packaging layer is printed around the display panel so that the packaging layer forms a positioning groove matched with the positioning protrusion.

15. The method for manufacturing a display module according to claim 14, wherein: The steps of bonding the cover plate to the display surface of the display panel through the adhesive layer, printing a positioning convex portion on a side of the protective layer away from the binding area, and bending the binding area include: Adhere the cover plate to the display surface of the display panel via the adhesive layer; Bending the binding area provided with the protective layer; The positioning protrusion is printed on a side of the protective layer away from the protective layer.

16. The method for manufacturing a display module according to claim 14, wherein: The steps of bonding the cover plate to the display surface of the display panel through the adhesive layer, printing a positioning convex portion on a side of the protective layer away from the binding area, and bending the binding area include: Printing the positioning protrusion on a side of the protective layer away from the binding area; Adhere the cover plate to the display surface of the display panel via the adhesive layer; The binding area where the protection layer and the positioning protrusion are bent is provided.

17. A display device, comprising the display module according to any one of claims 1 to 13.

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