Display module, preparation method thereof and wearable device

Abstract

The application provides a display module, a preparation method thereof and a wearable device. The display module comprises a shell and a cover plate. The cover plate and the shell are respectively provided with at least one first recess and at least one second recess which are oppositely arranged and located in a first sub-frame area. At least one filling part is arranged in a containing space. The cover plate comprises a body and a blocking part. The body is provided with a glue injection hole which is in communication with the first recess at a position corresponding to a slot. In the case that the body is covered on the shell, the filling material can enter the containing space through the glue injection hole and form the filling part after solidification to connect the cover plate and the shell. The blocking part is configured to block the glue injection hole. According to the application, the separable blocking part is arranged at the first sub-frame area of the cover plate, so that the filling material can be filled in the containing space through the glue injection hole, the filling material is prevented from being exposed, and the display area is improved in the screen-to-body ratio of the display module while the waterproof performance and the connection strength of the display module are considered.

Description

Technical Field

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

[0002] Currently, with the development of display technology, display modules are widely used in wearable devices. In wearable devices, to increase the display area ratio of the display module, the bezel area is generally narrowed. However, in current technology, part of the bezel area needs to cover the wiring around the periphery of the housing slot in the outer shell, and another part needs to have sufficient width to connect the outer shell and the cover plate. While ensuring the wiring is covered, the bezel area is already almost compressed to its limit, making it impossible to further increase the display area ratio of the display module. Summary of the Invention

[0003] This application provides a display module and its manufacturing method, as well as a wearable device, to increase the proportion of the display area in the display module while taking into account the waterproof performance and connection strength of the display module.

[0004] In a first aspect, a display module is provided for use in a wearable device. The display module has a display area and a bezel area surrounding the display area. The bezel area includes a first sub-bezel area and a second sub-bezel area. The first sub-bezel area is located on the side of the second sub-bezel area away from the display area. The display module includes: a housing having a receiving groove, with a sidewall of the housing forming the receiving groove located in the first sub-bezel area; and a cover plate covering the side of the housing facing the receiving groove. The cover plate and the housing are respectively provided with at least one first recess and at least one second recess, which are opposite to each other and located in the first sub-bezel area. In a vertical projection of the cover plate onto the housing, the first recess and... The second recess at least partially overlaps, and the first and second recesses enclose an accommodating space; and at least one filling portion disposed in the accommodating space; wherein the cover plate includes: a body, the first recess being disposed on the body, the body having at least one slot on the side opposite to the first recess, and the body having at least one injection hole communicating with the first recess at the position corresponding to the slot, wherein when the body is covered by the outer shell, the filling material can enter the accommodating space through the injection hole and form a filling portion after solidification to connect the cover plate and the outer shell; at least one sealing portion being detachably connected to the position corresponding to the slot of the body, the sealing portion being configured to seal the injection hole.

[0005] In conjunction with the first aspect, in some implementations of the first aspect, the main body has one first recess, which is arranged in a ring in the first sub-border area; the outer shell has one second recess, which is arranged in a ring in the first sub-border area; and the first and second recesses coincide in the orthographic projection of the main body onto the outer shell in the vertical direction. Alternatively, the main body has two or more first recesses, which are arranged in a ring at equal intervals in the first sub-border area; the outer shell has two or more second recesses, which are arranged in a ring at equal intervals in the first sub-border area; and the multiple first recesses and multiple second recesses correspond one-to-one, and the first and second recesses coincide in the orthographic projection of the main body onto the outer shell in the vertical direction.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the slot provided on the body is arranged in a ring at the edge of the body, and the sealing part is arranged in a ring and detachably connected to the slot; when the first recess is arranged in a ring, the glue injection holes are arranged in a plurality of equally spaced circumferentially, and the glue injection holes are respectively connected to the same first recess; when the first recess is arranged in a plurality of equally spaced rings, the glue injection holes are arranged in a plurality of circumferentially, and each or more glue injection holes are connected to a first recess.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, along the cross-section of the display module, the width of the injection hole is less than or equal to twice the width of the first recess; and / or, along the vertical direction, the depth of the first recess provided on the body is greater than or equal to half the height of the slot provided on the body.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the filler material is a waterproof adhesive.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the filler material is a waterproof hot melt adhesive.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, in the cross-section of the display module, the first length of the first contact edge of each filling portion that contacts the first recess is greater than or equal to the width of the first sub-border area, and the second length of the second contact edge of each filling portion that contacts the second recess is greater than or equal to the width of the first sub-border area.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the first length is greater than or equal to twice the width of the first sub-border area, and the second length is greater than or equal to twice the width of the first sub-border area.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the width of the first sub-border area decreases as at least one of the first length and the second length increases.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, in the cross-section of the display module, the width of the first recess is greater than or equal to half the width of the first sub-border area, and / or, the width of the second recess is greater than or equal to half the width of the first sub-border area.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, at least one of the bottom wall and side wall surrounding the first recess is provided with a plurality of dispersed first protrusions, and the filling portion is provided with a plurality of dispersed first recesses. When the filling portion fills the first recess, each first recess of the filling portion is filled by each first protrusion, and the surface of the first protrusion is in contact with the surface of the first recess; and / or, at least one of the bottom wall and side wall surrounding the second recess is provided with a plurality of dispersed second protrusions, and the filling portion is provided with a plurality of dispersed second recesses. When the filling portion fills the second recess, each second recess of the filling portion is filled by each second protrusion, and the surface of the second protrusion is in contact with the surface of the second recess.

[0015] In conjunction with the first aspect, some implementations of the first aspect further include: an adhesive portion disposed between the body and the outer shell of the first sub-frame area, the adhesive portion being configured to adhesive the cover plate to the outer shell, wherein when the filling portion fills the accommodating space, the filling portion is connected to the adhesive portion; and a shielding portion disposed between the body and the outer shell, wherein when the filling portion is connected to the adhesive portion, the shielding portion is disposed on the side of the adhesive portion away from the display area, and the shielding portion is located between the outer shell and the body, wherein the shielding portion is configured to separate the adhesive portion from the external environment.

[0016] Secondly, a method for manufacturing a display module is provided, applicable to the manufacturing of the display module described above. The method includes: providing a cover plate; cutting a first sub-frame area of ​​the cover plate to form a separable body and a sealing portion; and machining at least one first recess and at least one injection hole communicating with the first recess in the body; providing a housing; machining at least one second recess cooperating with the first recess in the first sub-frame area of ​​the housing; covering the housing with the body, such that the first and second recesses are opposite to and communicate with each other to form an accommodating space; injecting filler material from at least one injection hole to fill the accommodating space enclosed by the communicating first and second recesses; sealing the injection hole with the sealing portion; and forming a filling portion after the filler material solidifies to connect the cover plate and the housing, thereby obtaining the display module.

[0017] Thirdly, a wearable device is provided, including the display module described above.

[0018] This application provides a display module, its manufacturing method, and a wearable device. The display module has a display area and a border area surrounding the display area. The border area includes a first sub-border area and a second sub-border area. The first sub-border area is located on the side of the second sub-border area away from the display area. The display module includes: a housing having a receiving groove, with the sidewall of the housing forming the receiving groove located in the first sub-border area; and a cover plate covering the side of the housing facing the receiving groove. The cover plate and the housing each have at least one first recess and at least one second recess, respectively, disposed opposite to each other and located in the first sub-border area. In the vertical projection of the cover plate onto the housing, the first and second recesses at least partially overlap. The first and second recesses enclose a receiving space; and at least one filling part is disposed in the receiving space; wherein, the cover plate includes: a body, the first recess is disposed on the body, the body has at least one slot on the side opposite to the first recess, and the body has at least one injection hole communicating with the first recess at the position corresponding to the slot, when the body is covered by the outer shell, the filling material can enter the receiving space through the injection hole and form a filling part after solidification to connect the cover plate and the outer shell; at least one sealing part is detachably connected to the position corresponding to the slot of the body, and the sealing part is configured to seal the injection hole.

[0019] This application embodiment forms at least one accommodating space by setting corresponding first and second recesses in the first sub-bezel area of ​​the main body and the outer shell, respectively, and using a sealing part to open or block the injection hole to seal the filling material inside the display module and connect the cover plate and the outer shell. In this way, while ensuring the connection strength and waterproof effect of the cover plate and the outer shell, the width of the first sub-bezel area in the horizontal direction can be narrowed, thereby reducing the overall width of the bezel area and increasing the proportion of the display area of ​​the display module to improve the display effect. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and constitute a part of this application, illustrate exemplary embodiments of the application and are used to explain the application, but do not constitute an undue limitation of the application. In the drawings:

[0021] Figure 1a This is a top view of a display module.

[0022] Figure 1b This is a cross-sectional view of a display module.

[0023] Figure 2 This is a top view of a display module provided in an embodiment of this application.

[0024] Figure 3 This is a cross-sectional view of a display module provided in an embodiment of this application.

[0025] Figure 4A cross-sectional view of a display module provided in another embodiment of this application.

[0026] Figure 5 A cross-sectional view of a display module provided in another embodiment of this application.

[0027] Figure 6 This is an exploded cross-sectional view of the cover plate in a display module provided in an embodiment of this application.

[0028] Figure 7 This is a top view of the body in the cover plate provided in one embodiment of this application.

[0029] Figure 8 This is a top view of the sealing portion in a cover plate provided in an embodiment of this application.

[0030] Figure 9 A top view of the body in the cover plate provided in another embodiment of this application.

[0031] Figure 10 This is a top view of the sealing portion in a cover plate provided in another embodiment of this application.

[0032] Figure 11 This is a flowchart of a method for preparing a display module in one embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The features and exemplary embodiments of various aspects of this application will be described in detail below.

[0034] Figure 1a This is a top view of a display module. Figure 1b This is a cross-sectional view of a display module. Arrow X points in the first direction, arrow Y points in the second direction, and arrow Z points in the vertical direction, which is also the thickness direction of the display module 10'. The first direction X, the second direction Y, and the vertical direction Z are all perpendicular to each other. This will not be emphasized separately further.

[0035] like Figure 1a and Figure 1bThe display module 10' has a display area AA and a border area surrounding the display area AA. The border area can be arranged in a ring around one or more sides of the display area AA, or it can be arranged around the entire display area AA. It can be adapted according to the actual manufacturing requirements of the display module 10' without being specifically limited. The following explanation takes the border area surrounding the entire display area AA as an example.

[0036] In wearable devices with display functions, such as electronic watches, glasses, and helmets, the display module 10' used can be an organic light-emitting diode (OLED) display module or a liquid crystal display (LCD) display module, depending on the application field. Furthermore, depending on the user's needs, the display module 10' can be a foldable display module or a non-foldable display module. This invention does not make any specific limitations here.

[0037] The display module 10' includes a housing 2' and a cover plate 1' that covers the housing 2'. The housing 2' has a receiving groove 21, which is used to place a display panel consisting of an array substrate, a polarizer, and other electronic components for display purposes. The cover plate 1' covers the housing 2' to close the receiving groove 21. Along the vertical direction Z of the display module 10', the connection between the cover plate 1' and the housing 2', as well as the adjacent edge portion near the receiving groove 21, constitutes a border area. The area within the receiving groove 21 where the display panel is placed and used for light emission is defined as the display area AA.

[0038] The bezel area further includes a first sub-bezel area N2' and a second sub-bezel area N1. The first sub-bezel area N2' is located on the side of the second sub-bezel area N1 away from the display area AA. The sidewalls of the outer shell 2' that surrounds the receiving groove 21 are located in the first sub-bezel area N2'. The connection between the outer shell 2' and the cover plate 1' is achieved at the first sub-bezel area N2'. The second sub-bezel area N1 is located at the edge of the receiving groove 21 to shield the wiring around the perimeter of the display panel. That is, the shape of the receiving groove 21 matches the shape of the second sub-bezel area N1, the cross-sectional area of ​​the receiving groove 21 is equal to the sum of the areas of the display area AA and the second sub-bezel area N1, and the receiving groove 21 coincides with the display area AA and the second sub-bezel area N1. The sidewalls surrounding the receiving groove 21 coincide with the first sub-bezel area N2'. (Detailed description omitted.)

[0039] Optionally, the cover plate 1' can be a transparent glass cover plate, with the portion of the cover plate 1' located in the display area AA unobstructed. A black or other colored opaque layer can be provided at the position in the second sub-bezel area N1 to cover the wiring arranged near the edge of the receiving groove 21 of the outer casing 2'. Similarly, a black or other colored opaque layer can be provided at the position in the first sub-bezel area N2' to cover the lower outer casing 2'. The outer casing 2' can be a metal frame or a non-metal frame, such as a plastic frame with high drop resistance and resistance to deformation. Adaptive adjustments can be made according to actual needs, without specific limitations.

[0040] Since the second sub-bezel area N1 is used to cover the wiring at the edge of the lower receiving slot 21, the width of the second sub-bezel area N1 in the horizontal direction cannot be further narrowed. In the first sub-bezel area N2', the cover plate 1' needs to be connected to the outer shell 2' to ensure the stability and strength of the display module 10'. If the width of the first sub-bezel area N2' in the horizontal direction is narrowed, the connection strength between the cover plate 1' and the outer shell 2' will be reduced, making it easy for the cover plate 1' to fall off from the top. It will also make it easier for external water to seep in from the connection between the cover plate 1' and the outer shell 2', affecting the performance of the display module 10'.

[0041] To further narrow the bezel and increase the proportion of the display area within the display module, while also considering the shielding of edge wiring and the strength and waterproof performance of the connection between the cover plate and the outer shell, the cover plate can be divided into a main body and a sealing part. In the first sub-bezel area where the main body and the outer shell connect, recesses along the thickness direction are set at the contact points to form an accommodating space, and an injection hole communicating with the accommodating space is provided to fill the accommodating space with filler material. Then, the sealing part is used to seal the injection hole, so that the cured filler part can connect the cover plate and the outer shell within the accommodating space, improving the connection strength and providing better waterproof performance of the whole machine through the barrier, which is conducive to narrowing the first sub-bezel area.

[0042] In view of this, this application provides a display module and its manufacturing method, as well as a wearable device, which can improve the screen occupancy ratio of the display area of ​​the display module while ensuring the strength of the connection and waterproofness.

[0043] Figure 2 This is a top view of a display module provided in an embodiment of this application. Figure 3 This is a cross-sectional view of a display module provided in an embodiment of this application. Figure 4 A cross-sectional view of a display module provided in another embodiment of this application. Figure 5 A cross-sectional view of a display module provided in another embodiment of this application.

[0044] like Figure 2 Display module 10 can be Figure 2 Wearable devices can be made of various shapes, such as round, angular, or oval watches, or other shapes like glasses and helmets, and can be adapted to meet specific needs. In this embodiment, the display module 10 is the display screen of a watch.

[0045] Taking a circular display area AA and a circular border surrounding it as an example, in this case, regardless of whether the display module 10 is viewed in the cross-section in the first direction X, the second direction Y, or any other direction, the first sub-border area N2 and the second sub-border area N1, arranged in a ring, are symmetrically arranged on both sides of the display area AA. For ease of understanding, the following detailed explanation will use the cross-section of the display module 10 in the first direction X as an example.

[0046] It is understood that in the display area AA and the border area surrounding the display area AA included in the display module 10, the connecting edge line of the first sub-border area N2 and the second sub-border area N1 of the border area is the inner edge line formed by the inner edge of the outer shell 2, and is also the inner edge line of the first sub-border area N2. The outer edge line of the first sub-border area N2 is the outer edge line formed by the outer edge of the outer shell 2. It can be adaptively adjusted according to the actual situation of the display module 10, without specific limitation.

[0047] like Figures 3 to 5 The display module 10 includes a housing 2, a cover plate 1, and at least one filling part 3. The sidewall surrounding the outer side of the receiving groove 21 is located in the first sub-frame area N2. The cover plate 1 covers the side of the housing 2 facing the receiving groove 21. The cover plate 1 and the housing 2 are respectively provided with at least one first recess 1a and at least one second recess 2a that are arranged opposite to each other and located in the first sub-frame area N2. In the vertical Z-direction orthographic projection of the cover plate 1 onto the housing 2, the first recess 1a and the second recess 2a at least partially overlap. The first recess 1a and the second recess 2a surround a receiving space 2b. The filling part 3 is disposed in the receiving space 2b. The cover plate 1 includes a body 11 and at least one sealing part 12. A first recess 1a is provided on the body 11. The body 11 has at least one slot 1c on the side away from the first recess 1a. The body 11 has at least one injection hole 1b corresponding to the slot 1c and communicating with the first recess 1a. When the body 11 is covered by the outer shell 2, the filling material can enter the accommodating space 2b through the injection hole 1b and form a filling part 3 after solidification to connect the cover plate 1 and the outer shell 2. The sealing part 12 is detachably connected to the body 11 at the position corresponding to the slot 1c. The sealing part 12 is configured to seal the injection hole 1b.

[0048] It is understood that the embodiments of this application... Figure 4 Compared with existing technologies Figure 1b In comparison, Figure 1bIn the first sub-bezel area N2', the width of the first sub-bezel area N2' in the first direction X is the first width L1. Narrowing the first width L1 would inevitably lead to a thinner outer shell 2 and a reduced contact area between the outer shell 2 and the cover plate 1, thereby reducing the overall strength and waterproof performance of the display module and making it impossible to further achieve a narrow bezel. However, the display module 10 in this embodiment of the application... Figure 4 In the process, by utilizing the set accommodating space 2b and the glue injection hole 1b, the filling material is filled from the outside into the accommodating space 2b, and then the glue injection hole 1b is sealed by the sealing part 12 to achieve the bonding of the body 11 and the outer shell 2 inside, and to form a barrier wall. This is beneficial to improve the connection strength and waterproof performance of the display module 10, while also allowing the width of the first sub-bezel area N2 in the first direction X to be narrowed to the second width L2. The second width L2 is significantly smaller than the first width L1, thus achieving a narrow bezel while ensuring the overall strength and waterproof performance of the display module 10.

[0049] Therefore, the display module 10 provided in this application embodiment forms at least one accommodating space 2b by setting corresponding first recesses 1a and second recesses 2a at the first sub-bezel area N2 of the body 11 and the outer shell 2, respectively, and using the sealing part 12 to open or seal the glue injection hole 1b to seal the filling material inside the display module 10 and connect the cover plate 1 and the outer shell 2. In this way, while ensuring the strength of the cover plate 1 and the connection and the waterproof effect, the width of the first sub-bezel area N2 in the horizontal direction can be narrowed, thereby reducing the overall width of the bezel area and increasing the proportion of the display area AA of the display module 10 to improve the display effect.

[0050] It is understandable that the filler material is a waterproof organic adhesive, or other waterproof adhesives that achieve bonding. The filler material is set as a waterproof hot melt adhesive. After the filler material is heated and melted into a liquid, it can be injected from the injection hole 1b. After cooling, it can solidify to obtain the filling part 3. It can be adapted to actual needs without specific limitations.

[0051] Optionally, the sealing part 12 and the main body 11 can be obtained by cutting a one-piece molded glass cover plate 1. The number and shape of the cutting of the sealing part 12 can be adapted to the specific setting of the injection hole 1b, and are not specifically limited. In addition, when the sealing part 12 seals the injection hole 1b, the sealing part 12 and the main body 11, which are made of the same material, can be bonded together with waterproof adhesive, or they can be snapped together by a set buckle assembly, so as to ensure that while sealing the injection hole 1b, water is prevented from entering the interior through the injection hole 1b from the gap.

[0052] Optionally, the number of first recesses 1a can be set to one, and the first recesses 1a can be arranged in a ring at the first sub-frame area N2 on the side of the body 11 facing the outer shell 2. The number of second recesses 2a can be set to one, and the second recesses 2a can be arranged in a ring at the first sub-frame area N2 on the side of the outer shell 2 facing the body 11. In the orthographic projection of the body 11 in the vertical direction Z towards the outer shell 2, the first recesses 1a and the second recesses 2a coincide, so that when the body 11 is covered by the outer shell 2, the first recesses 1a and the second recesses 2a form an annular accommodating space 2b. Alternatively, the number of first recesses 1a can be set to two or more. Multiple first recesses 1a can be arranged at intervals around the periphery of the display area AA in the first sub-frame area N2 of the body 11 facing the outer shell 2. The number of second recesses 2a can be set to two or more. Multiple second recesses 2a correspond one-to-one with multiple first recesses 1a. In the orthographic projection of the body 11 along the vertical direction Z towards the outer shell 2, multiple first recesses 1a coincide with multiple second recesses 2a respectively, so that when the body 11 is covered by the outer shell 2, each corresponding first recess 1a and second recess 2a encloses a receiving space 2b. Multiple receiving spaces 2b are arranged at intervals around the periphery of the display area AA in the first sub-frame area N2.

[0053] It should be emphasized that when multiple first recesses 1a are provided (not shown in the figure), the multiple first recesses 1a can be arranged at equal intervals around the periphery of the display area AA. Similarly, when multiple second recesses 2a are provided, the multiple second recesses 2a can be arranged at equal intervals around the periphery of the display area AA. These arrangements can be adapted to meet actual needs. Furthermore, when multiple first recesses 1a are provided (not shown in the figure), the dimensions of the multiple first recesses 1a can be the same or different. However, at least when the center of the display area AA is taken as the center, the dimensions of each pair of opposite first recesses 1a must be the same. This ensures that the connection between the cover plate 1 and the outer shell 2 is subjected to uniform force, thereby improving the stability and strength of the connection.

[0054] In this embodiment of the application, the first recess 1a and the second recess 2a are both set as an annular structure for detailed description, but it is not limited thereto.

[0055] Optionally, the cross-sectional shape of the first recess 1a can be a square, trapezoidal, polygonal, semi-circular, or elliptical groove structure, and the cross-sectional shape of the second recess 2a can also be a square, trapezoidal, polygonal, semi-circular, or elliptical groove structure. The cross-sectional shapes of the first recess 1a and the second recess 2a can be the same, both being square groove structures. Furthermore, the width of the cross-section of the first recess 1a (e.g., ...) Figure 5The distance between the two side walls of the first recess 1a in the first direction X can be greater than or equal to the width of the cross-section of the second recess 2a (e.g., Figure 5 The distance between the two side walls of the second recess 2a in the first direction X).

[0056] It is understandable that the width of the cross-section of the second recess 2a is less than or equal to two-thirds of the width of the first sub-frame area N2, so as to avoid affecting the strength of the outer shell 2 itself.

[0057] Optionally, the depth of the second recess 2a extending in the vertical direction Z of the outer shell 2 is greater than or equal to the depth of the first recess 1a extending in the vertical direction Z of the body 11, and the depth of the second recess 2a extending in the vertical direction Z of the outer shell 2 is not greater than one-quarter of the total thickness of the outer shell 2, so as to avoid the second recess 2a affecting the strength and stability of the outer shell 2 itself.

[0058] Optionally, at least one of the bottom wall and side wall forming the first recess 1a is provided with a plurality of dispersed first protrusions, and the filling part 3 is provided with a plurality of dispersed first recesses (not shown in the figure). When the filling part 3 fills the first recess 1a, each first recess of the filling part 3 is filled by each first protrusion, and the surface of the first protrusion is in contact with the surface of the first recess; and / or, at least one of the bottom wall and side wall forming the second recess 2a is provided with a plurality of dispersed second protrusions, and the filling part 3 is provided with a plurality of dispersed second recesses. When the filling part 3 fills the second recess 2a, each second recess of the filling part 3 is filled by each second protrusion, and the surface of the second protrusion is in contact with the surface of the second recess. By providing a plurality of protrusions arranged in a dispersed manner on the surface of the first recess 1a and / or the second recess 2a, and a corresponding recess provided on the filling part 3, the contact area between the surface of the recess and the surface of the filling part 3 is further increased, which is beneficial to further improve the connection strength and stability of the cover plate 1 and the outer shell 2, and is also more able to prevent external water from seeping into the interior, thereby facilitating the narrowing of the first frame area.

[0059] Understandably, the first protrusion can be evenly distributed on the surface of the first recess 1a, and the second protrusion can be evenly distributed on the surface of the second recess 2a. Furthermore, the density of the first protrusion can be the same as the density of the second protrusion to further enhance the strength and stability of the connection. Additionally, the cross-sectional shape of the first protrusion can be a square, trapezoidal, polygonal, semi-circular, or elliptical shape, and the cross-sectional shape of the second protrusion can also be a square, trapezoidal, polygonal, semi-circular, or elliptical shape. The shape and size of the cross-sections of the first and second protrusions can be the same, and both can be circular protrusions.

[0060] In addition, the surface of the first protrusion can be made into a frosted surface, and the surface of the second protrusion can also be made into a frosted surface, so as to further improve the strength and stability of the connection with the filling part 3.

[0061] In some alternative embodiments, such as Figure 3 and Figure 4 In the cross-section of the display module 10, the first length of the first contact edge of each filling part 3 in contact with the first recess 1a is greater than or equal to the width of the first sub-bezel area N2, and the second length of the second contact edge of each filling part 3 in contact with the second recess 2a is greater than or equal to the width of the first sub-bezel area N2. That is, the length of the cross-section where the surface of the first recess 1a and / or the second recess 2a contacts the surface of the filling part 3 is greater than the first width L1 of the first sub-bezel area N2 before narrowing, and even greater than the second width L2 after narrowing. This ensures or even improves the connection strength between the cover plate 1 and the outer shell 2, which is beneficial to the narrowing of the first sub-bezel area N2, thereby improving the screen occupancy ratio of the display area AA of the display module 10.

[0062] Optionally, the width of the first sub-border area N2 increases with the increase of at least one of the first length and the second length. The increase of the first length and / or the first length means that the total length of the cross-section of the corresponding first recess 1a and / or second recess 2a that effectively contacts the filling portion 3 in the first direction X increases. In this case, even if the width of the outer shell 2 (which is also the length of the first sub-border area N2 at this time) is shortened, it can be ensured that the connection strength and stability between the body 11 and the outer shell 2 will not be reduced.

[0063] Optionally, the first length is greater than or equal to twice the width of the first sub-border area N2, and the second length is greater than or equal to twice the width of the first sub-border area N2.

[0064] Optionally, in the cross-section of the display module 10, the width of the first recess 1a is greater than or equal to half the width of the first sub-bezel area N2, and / or the width of the second recess 2a is greater than or equal to half the width of the first sub-bezel area N2. This is to avoid the set recess width being too large a proportion of the total width in the first sub-bezel area N2, thus affecting the strength of the cover plate 1 and / or the housing 2 itself. It should be emphasized that the distance from the outer sidewall of the first recess 1a to the edge of the body 11 (which is also the outer edge of the first sub-bezel area N2) cannot be less than 1 mm. Similarly, the distance from the outer sidewall of the second recess 2a to the outer edge of the housing 2 (which is also the outer edge of the first sub-bezel area N2) cannot be less than 1 mm, and the distance from the inner sidewall of the second recess 2a to the inner edge of the housing 2 (which is also the inner edge of the first sub-bezel area N2) cannot be less than 1 mm.

[0065] In some embodiments, when the body 11 is covered by the outer shell 2, other locations besides where the first recess 1a and the second recess 2a are provided, such as Figure 4 The surface of the body 11 at the first sub-frame area N2 is directly attached to the surface of the outer shell 2. At this time, the shape of the cover plate 1 at the attachment position matches the shape of the outer shell 2, avoiding the formation of a gap communicating with the accommodating space 2b. This ensures that the filling part 3 can be fully filled in the accommodating space 2b and make full contact with the inner wall of the first recess 1a and the inner wall of the second recess 2a respectively. This ensures that the cover plate 1 and the outer shell 2 have high connection strength and stability, and also prevents external water from seeping in, so that the display module 10 has high waterproof performance.

[0066] In addition, by directly attaching the surface of the body 11 at the first sub-bezel area N2 to the surface of the outer shell 2, it is beneficial to achieve a reduction in the thickness of the display module 10.

[0067] In other embodiments, such as Figure 4 The surface of the cover plate 1 at the first sub-bezel area N2 is bonded to the surface of the outer shell 2. Specifically, the display module 10 also includes an adhesive part 4 and a shielding part 5. The adhesive part 4 is disposed between the body 11 and the outer shell 2 of the first sub-bezel area N2. The adhesive part 4 is configured to bond the body 11 to the outer shell 2. When the filling part 3 fills the accommodating space 2b, the filling part 3 is connected to the adhesive part 4. The shielding part 5 is disposed between the body 11 and the outer shell 2. When the filling part 3 is connected to the adhesive part 4, the shielding part 5 is disposed on the side of the adhesive part 4 away from the display area AA, and the shielding part 5 is located between the outer shell 2 and the body 11. The shielding part 5 is configured to separate the adhesive part 4 from the external environment. By combining the adhesive part 4, the shielding part 5 and the filling part 3, the contact area between the main body 11 and the outer shell 2 is maximized within the limited width of the first sub-bezel area N2. With the narrowing of the first sub-bezel area N2, the strength and waterproof performance of the connection between the cover plate 1 and the outer shell 2 are maximized. This is beneficial to balance the strength, waterproof performance and narrow bezel of the display module 10, and improves the screen occupancy ratio of the display area AA of the display module 10.

[0068] Optionally, the adhesive part 4 can be specifically configured as an adhesive between the cover plate 1 and the outer shell 2, and the adhesive can be specifically configured as a waterproof adhesive.

[0069] Optionally, the shielding part 5 can be configured as a pressure-bearing and deformable sealing ring, which is connected between the body 11 and the outer shell 2 and sleeved on the outside of the adhesive part 4.

[0070] It is understandable that before filling the filling material from the injection hole 1b into the accommodating space 2b, the aligned body 11 and the outer shell 2 can be pre-fixed with adhesive to avoid horizontal misalignment between the body 11 and the outer shell 2 due to the force of the flowing filling material during the filling process, thereby improving the alignment accuracy between the body 11 and the outer shell 2.

[0071] Optionally, the adhesive portion 4, together with the first recess 1a and the second recess 2a, forms a closed accommodating space 2b, so that the liquid filled in the accommodating space 2b will not leak from the gap. Furthermore, the bonding force between the adhesive portion 4 and the filling portion 3, which are made of the same or similar materials, is higher than the bonding force between the filling portion 3 and the body 11 and / or the outer shell 2. This is beneficial to further improve the strength and stability of the connection between the body 11 and the outer shell 2, while preventing external water from seeping in and providing high waterproof performance.

[0072] Figure 6 This is an exploded cross-sectional view of the cover plate in a display module provided in an embodiment of this application. Figure 7 This is a top view of the body in the cover plate provided in one embodiment of this application. Figure 8 This is a top view of the sealing portion in a cover plate provided in an embodiment of this application. Figure 9 A top view of the body in the cover plate provided in another embodiment of this application. Figure 10 This is a top view of the sealing portion in a cover plate provided in another embodiment of this application.

[0073] like Figures 6 to 8 In the mating body 11 and sealing part 12, the slots 1c on the body 11 and the sealing parts 12 are arranged in a one-to-one correspondence. The slots 1c on the body 11 are arranged in a ring at intervals around the edge of the body 11. The multiple sealing parts 12 are independent of each other and correspond one-to-one with the multiple slots 1c. The shape of the sealing part 12 matches the shape of the slot 1c. When the first recess 1a is arranged in a ring, the glue injection holes 1b are arranged in a ring at intervals along the circumference. The multiple glue injection holes 1b are respectively connected to the same first recess 1a. When the first recess 1a is arranged in a ring at intervals (not shown in the figure), the glue injection holes 1b are arranged in a ring at intervals along the circumference. Each or more glue injection holes 1b are connected to a first recess 1a.

[0074] like Figure 9 and Figure 10 In the mating body 11 and the sealing part 12, the slot 1c provided on the body 11 is arranged in a ring at the edge of the body 11, and the sealing part 12 is arranged in a ring and detachably connected to the slot 1c; when the first recess 1a is arranged in a ring, a plurality of glue injection holes 1b are arranged at equal intervals along the circumference, and each glue injection hole 1b is connected to the same first recess 1a; when the first recess 1a is arranged in a ring at equal intervals, a plurality of glue injection holes 1b are arranged in a circumference, and each or more glue injection holes 1b is connected to a first recess 1a.

[0075] It is understandable that the specific number and arrangement of the injection hole 1b, the sealing part 12, and the first recess 1a can be adapted to actual needs and are not specifically limited.

[0076] Optionally, along the cross-section of the display module 10, the width of the injection hole 1b is less than or equal to twice the width of the first groove, so as to provide a buffer for the filling material to be injected into the receiving space 2b and prevent the filling material from seeping out in reverse after filling.

[0077] Optionally, along the vertical direction Z, the depth of the first recess 1a on the body 11 is greater than or equal to half the height of the slot 1c on the body 11, so as to provide a buffer for the filling material to be injected into the receiving space 2b and prevent the filling material from seeping out in the reverse direction after filling.

[0078] This application also provides a wearable device, such as an electronic watch, helmet, glasses, etc. The wearable device includes the display module 10 described in the above embodiments, which will not be repeated here.

[0079] Figure 11 This is a flowchart of a method for preparing a display module in one embodiment of this application.

[0080] This application also provides a method for manufacturing a display module, such as... Figure 11 As shown, this preparation method is applied to the preparation of display module 10 in wearable devices. The display module 10 can be referred to the relevant descriptions of the above embodiments. The steps of the preparation method of display module 10 are described as follows.

[0081] S110: Provide a cover plate 1, cut in the first sub-frame area N2 of the cover plate 1 to form a separable body 11 and a sealing portion 12, and process at least one first recess 1a and at least one injection hole 1b communicating with the first recess 1a in the body 11.

[0082] S120: Provide housing 2, and process at least one second recess 2a that mates with the first recess 1a in the first sub-frame area N2 of housing 2.

[0083] S130: Cover the body 11 onto the outer shell 2, so that the first recess 1a and the second recess 2a are opposite to each other and connected to form an accommodating space 2b.

[0084] S140: Filler material is injected from at least one injection hole 1b to fill the receiving space 2b enclosed by the connected first recess 1a and second recess 2a.

[0085] S150: Take the sealing part 12 to seal the glue injection hole 1b. After the filling material solidifies, a filling part 3 is formed to connect the cover plate 1 and the outer shell 2, thus obtaining the display module 10.

[0086] In this embodiment, corresponding first recesses 1a and second recesses 2a are respectively provided at the first sub-bezel area N2 of the main body 11 and the outer shell 2 to enclose and form at least one accommodating space 2b. The sealing part 12 is used to open or seal the glue injection hole 1b to seal the filling material inside the display module 10 and connect the cover plate 1 and the outer shell 2. In this way, while ensuring the strength of the cover plate 1 and the connection and the waterproof effect, the width of the first sub-bezel area N2 in the horizontal direction can be narrowed, thereby reducing the overall width of the bezel area and increasing the proportion of the display area AA of the display module 10 to improve the display effect.

[0087] In some embodiments, when covering the body 11 onto the outer shell 2, the method further includes: using adhesive material to bond the body 11 and the outer shell 2 together in the first sub-frame area N2 for pre-fixation, and after the adhesive material is fixed, an adhesive portion 4 is obtained between the body 11 and the outer shell 2. That is, before injecting the filler material from the injection hole 1b, the body 11 and the outer shell 2 are pre-fixed to avoid the force of the filler material hitting the hole wall when filling into the injection hole 1b, which could easily cause misalignment between the body 11 and the outer shell 2 in the horizontal direction, thus improving the manufacturing accuracy of the display module 10.

[0088] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings of this application for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it may be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0089] Furthermore, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, 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 limitations, 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 the element.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display module, characterized in that, For use in wearable devices, a display module has a display area and a border area surrounding the display area. The border area includes a first sub-border area and a second sub-border area, wherein the first sub-border area is located on the side of the second sub-border area away from the display area. The display module includes: The outer casing has a receiving groove, and the sidewall of the outer casing surrounding the receiving groove is located in the first sub-frame area; A cover plate, fitted onto the side of the outer casing facing the receiving groove, wherein the cover plate and the outer casing are respectively provided with at least one first recess and at least one second recess, which are respectively disposed opposite to each other and located in the first sub-frame area; in the vertical projection of the cover plate onto the outer casing, the first recess and the second recess at least partially overlap, and the first recess and the second recess enclose a receiving space; and At least one filling portion is disposed in the accommodating space; The cover plate includes: The body has a first recess disposed thereon. The body has at least one slot on the side away from the first recess, and the body has at least one injection hole corresponding to the slot that communicates with the first recess. When the body is covered by the outer shell, the filling material can enter the accommodating space through the injection hole and form the filling part after solidification, so as to connect the cover plate and the outer shell. At least one sealing part is detachably connected to the body at a position corresponding to the slot, and the sealing part is configured to seal the injection hole.

2. The display module according to claim 1, characterized in that, The main body has one first recess arranged in a ring around the first sub-frame area; the outer shell has one second recess arranged in a ring around the first sub-frame area; in the vertical projection of the main body onto the outer shell, the first recess and the second recess coincide; or... The main body has two or more first recesses, and the plurality of first recesses are arranged in a ring at equal intervals in the first sub-frame area. The outer shell has two or more second recesses, and the plurality of second recesses are arranged in a ring at equal intervals in the first sub-frame area. The plurality of first recesses and the plurality of second recesses correspond one-to-one, and the first recesses and the second recesses overlap in the vertical projection of the main body onto the outer shell.

3. The display module according to claim 2, characterized in that, The slot provided on the main body is arranged in a ring at the edge of the main body, and the sealing part is arranged in a ring and detachably connected to the slot. When the first recess is arranged in a ring, the glue injection holes are arranged at equal intervals along the circumference, and the glue injection holes are respectively connected to the same first recess; When the first recess is configured as a plurality of equally spaced annular recesses, the glue injection holes are configured as a plurality of circumferentially arranged holes, and each or more of the glue injection holes communicates with a first recess.

4. The display module according to claim 3, characterized in that, Along the cross-section of the display module, the width of the injection hole is less than or equal to twice the width of the first recess; and / or, In the vertical direction, the depth of the first recess on the body is greater than or equal to one-half the height of the slot on the body.

5. The display module according to claim 1, characterized in that, The filler material is a waterproof adhesive; Preferably, the filler material is a hot melt adhesive with waterproof properties.

6. The display module according to claim 1, characterized in that, In the cross-section of the display module, the first length of the first contact edge of each filling portion that contacts the first recess is greater than or equal to the width of the first sub-border area, and the second length of the second contact edge of each filling portion that contacts the second recess is greater than or equal to the width of the first sub-border area. Preferably, the first length is greater than or equal to twice the width of the first sub-border area, and the second length is greater than or equal to twice the width of the first sub-border area; Preferably, as at least one of the first length and the second length increases, the width of the first sub-border area decreases; Preferably, in the cross-section of the display module, the width of the first recess is greater than or equal to half the width of the first sub-bezel area, and / or the width of the second recess is greater than or equal to half the width of the first sub-bezel area.

7. The display module according to claim 1, characterized in that, At least one of the bottom wall and side wall forming the first recess is provided with a plurality of dispersed first protrusions, and the filling part is provided with a plurality of dispersed first recesses. When the filling part fills the first recess, each first recess of the filling part is filled by each first protrusion, and the surface of the first protrusion is in contact with the surface of the first recess; and / or, at least one of the bottom wall and side wall forming the second recess is provided with a plurality of dispersed second protrusions, and the filling part is provided with a plurality of dispersed second recesses. When the filling part fills the second recess, each second recess of the filling part is filled by each second protrusion, and the surface of the second protrusion is in contact with the surface of the second recess.

8. The display module according to claim 1, characterized in that, Also includes: An adhesive portion is disposed between the body and the outer shell in the first sub-frame area. The adhesive portion is configured to adhere the body to the outer shell. When the filling portion fills the accommodating space, the filling portion is connected to the adhesive portion. A shielding portion is disposed in one of the body and the outer casing. When the filling portion is connected to the adhesive portion, the shielding portion is disposed on the side of the adhesive portion away from the display area, and the shielding portion is located between the outer casing and the body. The shielding portion is configured to separate the adhesive portion from the external environment.

9. A method for manufacturing a display module, characterized in that, The method of fabrication of the display module according to any one of claims 1-8 comprises: A cover plate is provided, wherein a first sub-frame area of ​​the cover plate is cut to form a separable body and a sealing portion, and at least one first recess and at least one injection hole communicating with the first recess are machined in the body. Provide a housing, wherein at least one second recess that mates with the first recess is machined in the first sub-frame area of ​​the housing; The main body is placed on the outer shell, so that the first recess and the second recess are opposite to each other and connected to form an accommodating space; Filler material is injected from at least one of the injection holes to fill the receiving space enclosed by the communicating first recess and second recess; The sealing part is used to seal the injection hole. After the filling material solidifies, a filling part is formed to connect the cover plate and the outer shell, thus obtaining the display module.

10. A wearable device, characterized in that, Includes the display module as described in any one of claims 1-8.

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