Display module and mold, display panel and attaching method

Abstract

The application provides a display module and a mold, a display panel and a fitting method, and relates to the technical field of display. The display module comprises: a first display part; and a second display part, which is arranged at the outer edge of the first display part and extends outward, and comprises a ring-shaped conical surface structure surrounding the first display part. By designing the second display part as a ring-shaped conical surface structure surrounding the first display part, the relative flatness of the first display part and the second display part can be maintained, and the wrinkles and bubbles generated during the fitting process of the first display part and the second display part and the cover plate can be reduced, which is beneficial to the stability of the display module. In addition, the display module can display on the plane and the side surface, has a good visual effect, can bring a brand-new experience to the user, and further expands the application range of the display module.

Description

Technical Field

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

[0002] With the development of display technology, flexible displays are widely used in various electronic terminal products. Furthermore, based on market demand, their application has expanded from flat displays to side-mounted displays, such as dual-curved and quad-curved displays. This not only increases the screen-to-body ratio but also expands display applications, such as adding specific functional areas to the sides. However, this display method increases the difficulty of manufacturing the display panel. Specifically, the bonding process between the display module and the cover plate is relatively more difficult compared to the bonding process between a flat display (circular screen) and the cover plate, resulting in poor bonding precision between the curved parts of the display module and the cover plate.

[0003] Therefore, there is an urgent need to propose a technical solution to improve the bonding accuracy between the display module and the cover plate. Summary of the Invention

[0004] The first aspect of this application provides a display module comprising: a first display portion; and a second display portion, the second display portion being disposed at the outer edge of the first display portion and extending outward therefrom. The second display portion includes an annular conical structure surrounding the first display portion, which can maintain the relative flatness of the first and second display portions, reduce wrinkles and bubbles generated during the bonding process between the first and second display portions and the cover plate, and improve the stability of the display module. Furthermore, the display module can display on both its plane and sides, providing a better visual effect and offering users a novel experience, further expanding the applicability of this display module.

[0005] In conjunction with the first aspect, in some embodiments, the cross-sectional shape of the second display portion in the direction perpendicular to the extension of the first display portion is an isosceles trapezoid. By designing the cross-sectional shape of the second display portion in the direction perpendicular to the extension of the first display portion as an isosceles trapezoid, and designing the second display portion as an annular conical structure surrounding the first display portion, wrinkles and bubbles generated during the bonding process between the first and second display portions and the cover plate can be reduced, which is beneficial to the stability of the display module.

[0006] In conjunction with the first aspect, in some embodiments, the display module further includes a limiting groove located at the junction of the first display section and the second display section; preferably, the shape of the limiting groove's orthographic projection on the plane where the first display section is located is a closed ring. When the display module is attached to the cover plate, it can be adapted to the limiting boss on the cover plate through the limiting groove, so that a limiting is formed at the boundary between the planar area and the side area of ​​the cover plate, which is beneficial for the display module to be attached to the corresponding planar area or side area of ​​the cover plate, and improves the bonding accuracy between the display module and the cover plate.

[0007] In conjunction with the first aspect, in some embodiments, the first display unit and the second display unit are connected by at least one connection point, and the at least one connection point is located within a limiting groove. The first display unit and the second display unit are connected by at least one connection point.

[0008] Preferably, the first display unit and the second display unit are connected through a connection point; preferably, the connection method between the first display unit and the second display unit includes any one of the following: injection molding connection, non-adhesive surface connection, snap-fit ​​connection, and 3D printing connection. The first display unit and the second display unit are connected through a connection point.

[0009] In conjunction with the first aspect, in some embodiments, the second display unit includes a first edge, a second edge, a third edge, and a fourth edge. The first edge is opposite to the second edge and surrounds the outer edge of the first display unit. The fourth edge is connected to the third edge, and the distance from the connection point to the third edge is equal to the distance from the connection point to the fourth edge. The distance from the connection point between the first and second display units to the third edge is equal to the distance from the connection point to the fourth edge.

[0010] In conjunction with the first aspect, in some embodiments, a reinforcing layer is provided on the side of the second display unit away from the first display unit. The reinforcing layer is continuously provided and covers the second edge of the second display unit. Providing a reinforcing layer on the side of the second display unit away from the first display unit can cover the second edge of the second display unit, and at the same time, increases the bonding area of ​​the whole unit and improves the overall strength when the display module and the whole unit frame are bonded together.

[0011] A second aspect of this application provides a mold comprising: an upper plate including a groove; and a lower plate including a protrusion, the protrusion including a top surface and a sidewall surrounding the top surface, the sidewall being an annular conical surface; the top surface being used to adsorb a first display portion of a display module, and the sidewall being used to adsorb a second display portion of the display module; wherein, when the upper and lower plates are in a snap-fit ​​state, a sealed cavity is defined between the protrusion and the groove, the sealed cavity being used to accommodate the first and second display portions; the sealed cavity has an injection groove for injecting adhesive into a target area within the sealed cavity, so that the first and second display portions are connected, and the third and fourth edges of the second display portion, which are circumferentially opposite to each other on the sidewall, are connected, resulting in the display module mentioned in the first aspect. This mold enables the second display portion to be located at the outer edge of the first display portion and extend outwards, and the second display portion is designed as an annular conical surface structure surrounding the first display portion, which can maintain the relative flatness of the first and second display portions and reduce wrinkles and air bubbles generated during the bonding process between the first and second display portions and the cover plate.

[0012] In conjunction with the second aspect, in some embodiments, the lower plate includes alignment marks for aligning the first display unit and the second display unit with the lower plate respectively. By using alignment marks to gradually align the first display unit and the second display unit, it is beneficial to improve the alignment accuracy.

[0013] A third aspect of this application provides a display panel, comprising: a display module as mentioned in the first aspect, the display module including a first display portion and a second display portion, the second display portion being disposed at the outer edge of the first display portion and extending outward, the second display portion including an annular conical structure surrounding the first display portion; and a cover plate, the cover plate including an inner surface facing the display module and an outer surface away from the display module, the cover plate including a planar region and a side region disposed at the edge of the planar region, the side region being located in the circumferential direction of the planar region; wherein, the first display portion is attached to the inner surface of the planar region, and the second display portion is attached to the inner surface of the side region. This display panel, by disposing the second display portion at the outer edge of the first display portion and extending outward, and designing the second display portion as an annular conical structure surrounding the first display portion, can maintain the relative flatness of the first and second display portions. The cover plate is configured to fit the display module, which can reduce wrinkles and bubbles generated during the bonding process between the first and second display portions and the cover plate, thus contributing to the stability of the display module.

[0014] A fourth aspect of this application provides a bonding method, comprising: providing a display module as mentioned in the first aspect, the display module including a first display portion and a second display portion; providing a cover plate, the cover plate including an inner surface facing the display module and an outer surface away from the display module, the cover plate including a planar area and a side surface disposed at the edge of the planar area, the side surface being located in the circumferential direction of the planar area and at least partially curved, the curved surface including an edge connected to the planar area, and on the inner surface, a limiting boss protruding from the inner surface is provided on the edge, and the limiting boss extends in the circumferential direction of the planar area; bonding the first display portion to the inner surface of the planar area, bonding the second display portion to the side surface, and the limiting groove between the first display portion and the second display portion being adapted to the limiting boss, the second display portion extending outward from the outer edge of the first display portion, the second display portion including an annular conical surface structure surrounding the first display portion. This bonding method adapts the limiting groove and limiting boss between the first display part and the second display part to form a limit at the boundary between the plane area and the side area of ​​the cover plate, and can bond the first display part to the inner surface of the plane area of ​​the cover plate. By bonding the first display part to the inner surface of the plane area and bonding the second display part to the side area, the bonding accuracy between the display module and the cover plate is improved.

[0015] The display module provided in this application embodiment, by placing the second display portion on the outer edge of the first display portion and extending it outward, and designing the second display portion as an annular conical structure surrounding the first display portion, can maintain the relative flatness of the first and second display portions, reducing wrinkles and bubbles generated during the bonding process between the first and second display portions and the cover plate, which is beneficial to the stability of the display module. Furthermore, the display module can display on both its plane and sides, providing a better visual effect and offering users a completely new experience, further expanding the applicability of this display module. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic diagram of the structure of a display module provided in an exemplary embodiment of this application.

[0017] Figure 2 The image shown is a side view of a second display section provided in an exemplary embodiment of this application.

[0018] Figure 3 The image shown is a top view of a display module provided in an exemplary embodiment of this application.

[0019] Figure 4 The diagram shown is a structural schematic of a display module provided in another exemplary embodiment of this application.

[0020] Figure 5 The diagram shown is a structural schematic of a display module provided in another exemplary embodiment of this application.

[0021] Figure 6 The diagram shown is a structural schematic of a mold provided in an exemplary embodiment of this application.

[0022] Figure 7 The image shown is for this application. Figure 6 Enlarged view of point A in another structure of the medium mold.

[0023] Figure 8 The image shown is for this application. Figure 6 Enlarged view of point B in another structure of the middle mold.

[0024] Figure 9 The diagram shown is a structural schematic of a mold provided in an exemplary embodiment of this application.

[0025] Figure 10 The diagram shown is a schematic diagram of the structure of a display panel provided in an exemplary embodiment of this application.

[0026] Figure 11 The diagram shown is a schematic flowchart of an exemplary embodiment of the present application for a bonding method. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0029] With the development of display technology, flexible display panels, due to their numerous advantages such as bendability, foldability, high flexibility, thinness, lightness, and low power consumption, can be widely used in electronic devices such as smartphones and wearable products to enhance user experience. As user needs have evolved, flexible display panels have progressed from dual-curved to quadruple-curved displays, and now to circular 3D displays. This requires that the front of the flexible display panel can display (e.g., a circular display) and its sides can also display (e.g., a conical display) to improve the user's visual experience. A flexible display panel consists of a flexible display module for display and a cover plate on the light-emitting side of the flexible display module, which are bonded together.

[0030] After long-term research, the inventors discovered that, from a physical structure perspective, using a circular flexible display module to adhere to the cover plate requires bending the circular flexible display module and attaching it to the inner surface of the cover plate. If this is done, there will be adhesion wrinkles.

[0031] In view of this, this application provides a display module in which the second display part is designed to form an annular conical structure surrounding the first display part, thereby improving the bonding accuracy between the second display part and the cover plate. The design scheme of this display module is described below.

[0032] Figure 1 The diagram shown is a schematic diagram of the structure of a display module provided in an exemplary embodiment of this application. Figure 2 The image shown is a side view of a second display section provided in an exemplary embodiment of this application. Figure 1 and 2 As shown, the display module 20 includes: a first display part 1; and a second display part 2, the second display part 2 being disposed on the outer edge of the first display part 1 and extending outward, the second display part 2 including an annular conical surface structure surrounding the first display part 1.

[0033] Specifically, the display module 20 is shaped like a frustum. The first display section 1 corresponds to the planar display area, that is, the top surface of the frustum. The second display section 2 corresponds to the side display area, that is, the side surface of the frustum. The first display section 1 can be circular, and the entire second display section 2 is curved and surrounds the outer edge of the circle (the edge away from the center).

[0034] The cross-sectional shape of the second display section 2 perpendicular to the extension direction of the first display section 1 is an isosceles trapezoid. The second display section 2, which is entirely curved, forms a conical display area, that is, the cross-sectional view of the second display section 2 in the Y direction is an isosceles trapezoid.

[0035] It should be noted that the first display unit 1 and the second display unit 2 may be unconnected or physically connected.

[0036] The display module provided in this application embodiment can be configured with at least one display surface as the main display surface according to its application scenario. For example, when applied to a display screen, the first display unit 1 can be used as the main display surface, and its working state can be set as follows: The same content can be displayed simultaneously on multiple main display surfaces, for example, the same image can be displayed simultaneously on the first display unit 1 and the second display unit 2. Different content can also be displayed on multiple main display surfaces respectively, for example, an image of an animal head can be displayed on the first display unit 1, and an image of a human body can be displayed on the second display unit 2. Of course, content can also be displayed only on one of the first display unit 1 and the second display unit 2, while the other is turned off.

[0037] In some embodiments, the first display unit 1 and the second display unit 2 may be used as a whole to display the same content, or the first display unit 1 and the second display unit 2 may display different content in different areas. This application does not limit this.

[0038] The first display unit 1 includes a liquid crystal display panel, an organic electroluminescent display panel, or an electronic paper display panel; correspondingly, the second display unit 2 can also be a liquid crystal display panel, an organic electroluminescent display panel, or an electronic paper display panel. Since the second display unit 2 needs to be bent, a flexible substrate needs to be selected for fabrication. The flexible substrate includes a glass substrate, and the material of the corresponding functional film layer also needs to have corresponding flexibility to ensure that the second display unit 2 can be bent to a certain extent.

[0039] The display module provided in this application embodiment, by placing the second display part 2 on the outer edge of the first display part 1 and extending it outward, and designing the second display part 2 as an annular conical structure surrounding the first display part 1, can maintain the relative flatness of the first display part 1 and the second display part 2, reducing wrinkles and bubbles generated during the bonding process between the first display part 1 and the second display part 2 and the cover plate, which is beneficial to the stability of the display module 20. In addition, the display module 20 can display on both the plane and the side, providing a better visual effect and bringing a brand-new experience to the user, further expanding the applicability of the display module 20.

[0040] Figure 3 The image shown is a top view of a display module provided in an exemplary embodiment of this application. Figure 4 The diagram shown is a structural schematic of a display module provided in another exemplary embodiment of this application. Figure 3 and Figure 4 As shown, the display module 20 also includes a limiting groove 3 located at the junction of the first display section 1 and the second display section 2.

[0041] Specifically, when the first display unit 1 and the second display unit 2 are not connected, the limiting groove 3 is formed by the gap between the first display unit 1 and the second display unit 2. Preferably, the shape of the limiting groove 3 as projected onto the plane of the first display unit 1 is a closed ring.

[0042] In some embodiments, when the display module 20 is attached to the cover plate, it can be adapted to the limiting boss on the cover plate by the limiting groove 3, so that the boundary between the plane area and the side area of ​​the cover plate is limited, which is beneficial for the display module 20 to be attached to the corresponding plane area or side area of ​​the cover plate, and improves the bonding accuracy between the display module 20 and the cover plate.

[0043] In some embodiments, the first display unit 1 and the second display unit 2 are connected by at least one connection point, and the at least one connection point is located within the limiting groove 3.

[0044] For example, the first display unit 1 and the second display unit 2 can be connected by two connection points, which can be any position where the first display unit 1 and the second display unit 2 come into contact. Preferably, when the second display screen is in a flattened state, the two connection points are located on both sides of the center line of the second display screen and are symmetrically distributed.

[0045] Figure 5 The diagram shown is a structural schematic of a display module provided in another exemplary embodiment of this application. Figure 5 As shown, there is one connection point 4, and the first display unit 1 and the second display unit 2 are connected at a single point.

[0046] Specifically, the first display unit 1 and the second display unit 2 can be physically connected. The connection point 4 between the first display unit 1 and the second display unit 2 is located within the limiting groove 3.

[0047] Preferably, the connection method between the first display part 1 and the second display part 2 can be an additive manufacturing method, specifically including any one of the following: injection molding connection, non-adhesive surface connection, snap-fit ​​connection, and three-dimensional (3D) printing connection.

[0048] The display module provided in this application embodiment has a first display unit 1 and a second display unit 2 connected by at least one connection point. When applied to a display screen, the first display unit 1 and the second display unit 2 can function as a whole and simultaneously display the same content. The connection point can serve as a signal input point for the second display unit 2, allowing the first display unit 1 to send display signals to the second display unit 2 through at least one connection point, further expanding the applicability of the display module.

[0049] In some implementations, such as Figure 5 As shown, the second display unit 2 includes a first edge 201, a second edge 202, a third edge 203 and a fourth edge 204. The first edge 201 is opposite to the second edge 202 and surrounds the outer edge of the first display unit 1. The fourth edge 204 is connected to the third edge 203. The distance from the connection point 4 to the third edge 203 is equal to the distance from the connection point 4 to the fourth edge 204.

[0050] The connection point 4 between the first display unit 1 and the second display unit 2 is exactly the center point of the second display unit 2 after it is unfolded. The center point is equidistant from the first end and the last end of the second display unit 2, that is, the distance from the connection point 4 to the third edge 203 is equal to the distance from the connection point 4 to the fourth edge 204.

[0051] The display module provided in this application embodiment has a distance from the connection point 4 between the first display part 1 and the second display part 2 to the third edge 203 equal to the distance from the connection point 4 to the fourth edge 204. This is beneficial for controlling and adjusting the second display part 2 to form an annular conical surface structure before the display module 20 is attached to the cover plate, thereby reducing the attachment wrinkles of the second display part 2.

[0052] In some implementations, such as Figure 2 and Figure 3 As shown, a reinforcing layer 205 is provided on the side of the second display unit 2 away from the first display unit 1, and the reinforcing layer 205 is continuously provided and covers the second edge 202 of the second display unit 2.

[0053] On the outer side of the second display section 2 (i.e., the side opposite to the first display section 1), a layer of reinforcing material is provided to wrap the lower edge of the second display section 2, thus forming a reinforcing layer 205 that contacts the surface of the cover plate.

[0054] For example, the reinforcing layer 205 can be formed by additive manufacturing. Preferably, the reinforcing layer 205 can be formed by injection molding, 3D printing, etc.

[0055] The display module provided in this application embodiment has a reinforcing layer 205 on the side of the second display part 2 away from the first display part 1, which can wrap the second edge 202 of the second display part 2. At the same time, when the display module 20 is bonded to the whole frame, the bonding area of ​​the whole machine is increased and the strength of the whole machine is improved.

[0056] Figure 6 The diagram shown is a structural schematic of a mold provided in an exemplary embodiment of this application. Figure 6 As shown, the mold 30 includes: an upper plate 5, including a groove; and a lower plate 13, including a protrusion, the protrusion including a top surface and a side wall surrounding the top surface, the side wall being an annular conical surface, the top surface being used to adsorb the first display part of the display module, and the side wall being used to adsorb the second display part of the display module; wherein, when the upper plate 5 and the lower plate 13 are in a snap-fit ​​state, a sealed cavity is defined between the protrusion and the groove, the sealed cavity being used to accommodate the first display part and the second display part.

[0057] Specifically, the lower plate 13 is used to adsorb the first display unit and the second display unit, and to align and assemble the first display unit and the second display unit. The upper plate 5 is used to align with the lower plate 13 to define a sealed cavity for injection molding connection of the first display unit and the second display unit.

[0058] In some embodiments, the outer surface of the lower plate 13 is provided with a plurality of through holes, which are used to provide vacuum adsorption and vacuum breaking positive pressure feeding.

[0059] Figure 7 The image shown is for this application. Figure 6 Enlarged view of point A in another structure of the medium mold. Figure 8 The image shown is for this application. Figure 6 An enlarged view of section B in another structure of the middle mold. (See diagram below.) Figures 6 to 8 As shown, glue injection grooves 6 are respectively provided on the upper plate 5 and lower plate 13 corresponding to the edges of the first display part 1 and the second display part 2 for the accumulation of plastic injection, so that when the upper plate 5 and the lower plate 13 are in a snap-fit ​​state, glue is injected into the target area in the sealed cavity defined between the protrusion and the groove, thereby realizing the structural connection of the first display part 1 and the second display part 2, the end-to-end connection of the second display part 2 (i.e., the connection of the third edge 203 and the fourth edge 204 of the second display part 2 which are arranged opposite to each other in the circumferential direction of the side wall), and the reinforcement of the lower edge of the second display part 2 (i.e., the formation of a reinforcing layer), thereby obtaining the display module mentioned in any of the above embodiments.

[0060] Figure 9The diagram shown is a structural schematic of a mold provided in an exemplary embodiment of this application. Figure 9 As shown, Figure 9 As shown, the mold 30 may include multiple stations 7, each station 7 being used to obtain the display module mentioned in the first aspect. There are injection ports 8 and injection channels 9 between the stations 7. The mold 30 conveys injection plastic to the injection channel 9 through the injection ports 8, facilitating the accumulation of injection plastic in the injection grooves 6 respectively provided on the upper plate 5 and the lower plate 13, so that the first display part and the second display part are connected, and the third and fourth edges of the second display part, which are arranged opposite each other in the circumferential direction of the sidewall, are connected, thereby obtaining the display module mentioned in the first aspect.

[0061] In some embodiments, the lower plate includes alignment marks for aligning the first display unit 1 and the second display unit 2 with the lower plate, respectively.

[0062] In some embodiments, the mold further includes a heating and cooling device disposed in the area of ​​the injection groove 6; preferably, the heating and cooling device includes a heating unit for heating and curing the injection plastic to achieve structural connection of the first display part 1 and the second display part 2, end-to-end connection of the second display part 2, and reinforcement of the lower edge of the second display part 2 (i.e., forming a reinforcing layer). The heating and cooling device includes a cooling unit for dissipating heat from the display area of ​​the display module to prevent overheating of the mold from adversely affecting the display area of ​​the screen.

[0063] In some embodiments, the first display unit 1 and the second display unit 2 are connected by injection molding. The material can be selected from low-temperature injection molding materials such as thermoplastic polyurethane (TPU) or silicone to reduce the thermal impact on the display module.

[0064] The connection between the first display unit 1 and the second display unit 2 is achieved by injection molding, specifically including the following steps.

[0065] (1) The robot arm adsorbs the first display part 1 and places the first display part 1 in the first display part area in the lower plate of the mold. Alignment is achieved by alignment marks to improve the accuracy requirements. Negative pressure is set on multiple through holes on the outer surface of the lower plate so that the lower plate can adsorb the first display part.

[0066] (2) The robotic arm adsorbs the second display part 2, and the alignment of the second display part 2 is gradually achieved by using alignment marks. Negative pressure is set on the vacuum hole, and the lower plate adsorbs the second display part 2, so that the annular second display part 2 is rolled into a side annular sub-screen, so that it is located in the second display part area in the lower plate.

[0067] (3) After the first display part 1 and the second display part 2 of all stations are aligned and adsorbed, the upper plate is pressed down, the mold is heated, the injection action begins, and then it is cooled. The plastic is filled in the connection area of ​​the first display part 1 and the second display part 2 where there is demand, the connection area of ​​the third edge and the fourth edge of the second display part 2 which are arranged opposite to each other in the circumferential direction of the side wall, and the outer side of the second display part.

[0068] (4) The upper plate is raised, and the vacuum hole is filled with positive pressure to realize material feeding.

[0069] The mold provided in this application embodiment enables the annular second display section to be rolled into an annular conical structure. This allows the second display section to be positioned at the outer edge of the first display section and extend outwards. The design of the second display section as an annular conical structure surrounding the first display section maintains relative flatness between the two sections, reducing wrinkles and air bubbles generated during the bonding process between the first and second display sections and the cover plate, thus improving the stability of the display module. Furthermore, the display module can display on both its plane and sides, providing a better visual effect and a novel user experience, further expanding the applicability of this display module.

[0070] Figure 10 The diagram shown is a structural schematic of a display panel provided in an exemplary embodiment of this application. Figure 10 As shown, the display panel includes: a display module 20, which includes a first display part 1 and a second display part 2. The second display part 2 is disposed on the outer edge of the first display part 1 and extends outward. The second display part 2 includes an annular conical structure surrounding the first display part 1. The cover plate 10 includes an inner surface S1 facing the display module 20 and an outer surface S2 away from the display module 20. The cover plate 10 includes a planar area A1 and a side area A2 disposed on the edge of the planar area A1. The side area A2 is located in the circumferential direction of the planar area A1. The first display part 1 is attached to the inner surface S1 of the planar area A1, and the second display part 2 is attached to the side area A2.

[0071] The display panel provided in this application embodiment, by setting the second display part 2 on the outer edge of the first display part 1 and extending it outward, and designing the second display part 2 as an annular conical structure surrounding the first display part 1, can maintain the relative flatness of the first display part 1 and the second display part 2. The cover plate 10 is configured to adapt to the display module 20, which can reduce wrinkles and bubbles generated during the bonding process between the first display part 1 and the second display part 2 and the cover plate 10, thus contributing to the stability of the display module 20. In addition, the display module 20 can display on both its plane and side, providing a better visual effect and bringing a brand-new experience to users, further expanding the applicability of the display module 20.

[0072] In some embodiments, the cover plate 10 includes an edge connected to the planar area A1, and a limiting boss protruding from the inner surface S1 is provided on the edge, and the limiting boss extends in the circumferential direction of the planar area A1; the display module includes a limiting groove between the first display part 1 and the second display part 2, and the limiting groove is adapted to the limiting boss.

[0073] The display panel provided in this application embodiment has a design scheme in which a limiting boss is provided on the edge of the side area A2 of the cover plate 10. This design can form a limit at the boundary between the plane area A1 and the side area A2 of the cover plate 10, so that the display module 20 can be attached to the corresponding plane area A1 or side area A2 according to the limit, thereby improving the bonding accuracy between the display module 20 and the cover plate 10.

[0074] One embodiment of this application also provides a display device. It is understood that the display panel can be applied to a display device, which can be, for example, any product or component with a display function, such as a mobile terminal, tablet computer, computer monitor, television set, wearable device, or information kiosks. The display device includes, for example... Figure 10 The display panel in the illustrated embodiment has a similar technical principle and produces similar effects, so it will not be described in detail here.

[0075] The display device provided according to any embodiment of this application and the display panel provided in the embodiments of this application belong to the same inventive concept, and have corresponding film layer structures and beneficial effects. Details not described in detail in the embodiments of the display device can be found in the embodiments section of the display panel, and will not be repeated here.

[0076] Figure 11 The diagram shown is a schematic flowchart of a bonding method provided in an exemplary embodiment of this application. Figure 11 As shown, the bonding method includes the following steps.

[0077] Step 1100: A display module is provided. The display module includes a first display unit and a second display unit.

[0078] Step 1101, provide a cover plate.

[0079] The cover plate includes an inner surface facing the display module and an outer surface away from the display module. The cover plate includes a planar area and a side area disposed at the edge of the planar area. The side area is located in the circumferential direction of the planar area and is at least partially curved. The curved surface includes an edge connected to the planar area. On the inner surface, a limiting boss protruding from the inner surface is provided on the edge, and the limiting boss extends in the circumferential direction of the planar area.

[0080] Step 1102: The first display part is attached to the inner surface of the planar area, and the second display part is attached to the side area.

[0081] The limiting groove and the limiting boss between the first display part and the second display part are adapted to each other. The second display part extends outward from the outer edge of the first display part and includes an annular conical surface structure surrounding the first display part.

[0082] It should be understood that, as mentioned above, during the injection molding process before the cover plate is attached, the connection area between the first display part and the second display part, the connection area between the third edge and the fourth edge of the second display part that are disposed opposite each other in the circumferential direction of the side wall, and the outer side of the second display part have been filled with injection molding material, that is, the first display part and the second display part are integrally connected.

[0083] Specifically, in the fabrication process of a curved display screen, it is necessary to bond the display module to a pre-formed curved cover plate. Typically, an airbag is used to press down on the first and second display sections, bonding the first display section to the inner surface of the cover plate's planar area and the second display section to the side area of ​​the cover plate. This achieves bonding between the display module and the curved cover plate, keeping them relatively flat, which is beneficial for the stability of the display panel and reduces bonding wrinkles and bubbles. While forming the annular conical side display area, it also ensures a high bonding precision between the flexible display module and the inner surface of the cover plate.

[0084] The bonding method provided in this application embodiment has a limiting groove and a limiting boss between the first display part and the second display part, which can form a limit at the boundary between the plane area and the side area of ​​the cover plate, and can bond the first display part to the inner surface of the plane area of ​​the cover plate. The first display part is bonded to the inner surface of the plane area of ​​the cover plate by airbag pressing, and the second display part is bonded to the side area, which improves the bonding accuracy between the display module and the cover plate.

[0085] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0086] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0087] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0088] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0089] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A mold, characterized in that, include: Upper plate, including grooves; and The lower plate includes a protrusion, the protrusion having a top surface and a sidewall surrounding the top surface, the sidewall being an annular conical surface, the top surface being used to adsorb the first display part of the display module, and the sidewall being used to adsorb the second display part of the display module; When the upper and lower plates are engaged, a sealed cavity is defined between the protrusion and the groove. The sealed cavity is used to accommodate the first display unit and the second display unit. The sealed cavity has an injection groove for injecting glue into a target area within the sealed cavity, so that the first and second display units are connected, and the third and fourth edges of the second display unit, which are arranged opposite to each other on the circumferential sidewalls, are connected to obtain a display module. The display module includes: First display unit; and The second display unit is disposed on the outer edge of the first display unit and extends outward therefrom, and the second display unit includes an annular conical surface structure surrounding the first display unit; A limiting groove is located at the junction of the first display section and the second display section, and the limiting groove is adapted to the limiting boss.

2. The mold according to claim 1, characterized in that, The cross-sectional shape of the second display unit in the direction perpendicular to the extension of the first display unit is an isosceles trapezoid.

3. The mold according to claim 1, characterized in that, The shape of the orthographic projection of the limiting groove onto the plane where the first display unit is located is a closed ring.

4. The mold according to claim 1, characterized in that, The first display unit and the second display unit are connected by at least one connection point, and the at least one connection point is located within the limiting groove.

5. The mold according to claim 4, characterized in that, The first display unit and the second display unit are connected by a connection point.

6. The mold according to claim 4, characterized in that, The connection method between the first display unit and the second display unit includes any one of the following: injection molding connection, non-adhesive surface connection, snap-fit ​​connection, and 3D printing connection.

7. The mold according to claim 4, characterized in that, The second display unit includes a first edge, a second edge, a third edge, and a fourth edge. The first edge is opposite to the second edge and surrounds the outer edge of the first display unit. The fourth edge is connected to the third edge, and the distance from the connection point to the third edge is equal to the distance from the connection point to the fourth edge.

8. The mold according to claim 7, characterized in that, A reinforcing layer is provided on the side of the second display unit away from the first display unit, and the reinforcing layer is continuously provided and covers the second edge of the second display unit.

9. The mold according to claim 1, characterized in that, The lower plate includes alignment marks for aligning the first display portion and the second display portion with the lower plate, respectively.

10. A display panel, characterized in that, include: The display module manufactured by the mold as described in claims 1 to 9 includes a first display part and a second display part, the second display part being disposed on the outer edge of the first display part and extending outward, and the second display part including an annular conical surface structure surrounding the first display part; as well as A cover plate, the cover plate including an inner surface facing the display module and an outer surface away from the display module, the cover plate including a planar area and a side area disposed at the edge of the planar area, the side area being located in the circumferential direction of the planar area; The first display portion is attached to the inner surface of the planar area, and the second display portion is attached to the inner surface of the side area.

11. A bonding method, characterized in that, include: A display module manufactured using a mold as described in claims 1 to 9 is provided, the display module comprising a first display unit and a second display unit; A cover plate is provided, the cover plate including an inner surface facing the display module and an outer surface away from the display module, the cover plate including a planar area and a side area disposed at the edge of the planar area, the side area being located in the circumferential direction of the planar area and being at least partially curved, the curved surface including an edge connected to the planar area, and on the inner surface, the edge is provided with a limiting boss protruding from the inner surface, and the limiting boss extending in the circumferential direction of the planar area; The first display portion is attached to the inner surface of the planar area, the second display portion is attached to the side area, and the limiting groove between the first display portion and the second display portion is adapted to the limiting boss. The second display portion is located at the outer edge of the first display portion and extends outward. The second display portion includes an annular conical surface structure surrounding the first display portion.

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