Display module and display screen

Abstract

The utility model belongs to the technical field of display, and particularly relates to a display module and a display screen. A mounting groove for mounting the circuit board is formed in the surface of the bottom shell; the circuit board is arranged in the mounting groove, and a first glue injection gap is formed between the side wall of the circuit board and the inner side wall of the mounting groove; an annular first groove is concavely formed in the position, close to the peripheral side of the bottom shell, of the groove bottom of the mounting groove, and the first groove communicates with the first glue injection gap; and the sealing glue can be filled into the first groove from the first glue injection gap, so that a first sealing glue layer is formed in the first groove, and a second sealing glue layer is formed in the first glue injection gap. Two waterproof structures are formed through the first sealing glue layer and the second sealing glue layer, and the waterproof effect of the display module is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of display, and particularly relates to a display module and a display screen. BACKGROUND

[0002] The LED display screen has the characteristics of high luminous brightness, high luminous efficiency, bright color, high contrast, short response time, wide working temperature range and low energy consumption, and is widely used in stage display equipment, advertising display equipment, data visual display equipment and commercial display equipment.

[0003] Waterproofing is an important safety factor for outdoor display screens, and the sealing performance of the display module is particularly important. The waterproof structure of the existing display screen is prone to poor waterproof effect. CONTENT OF THE UTILITY MODEL

[0004] The application aims to solve the problem in the prior art that the waterproof structure of the display screen is prone to poor waterproof effect.

[0005] The first aspect of the application provides a display module, comprising: a circuit board; a bottom shell, the surface of which is provided with a mounting groove for mounting the circuit board; the circuit board is arranged in the mounting groove, and a first glue injection gap is formed between the side wall of the circuit board and the inner side wall of the mounting groove; an annular first groove is concavely arranged at the position close to the outer peripheral side of the bottom shell at the groove bottom of the mounting groove, and the first groove is in communication with the first glue injection gap; and sealing glue, which can be filled from the first glue injection gap into the first groove to form a first sealing glue layer in the first groove and a second sealing glue layer in the first glue injection gap.

[0006] In an exemplary embodiment of the application, the bottom shell comprises a shell main body and an annular retaining edge connected to the outer periphery of the shell main body, and the shell main body and the retaining edge enclose the mounting groove; the first glue injection gap is formed between the side wall of the circuit board and the inner side wall of the retaining edge, and the first groove is arranged on the surface of the shell main body close to the retaining edge.

[0007] In an exemplary embodiment of the application, the circuit board is provided with an opening hole penetrating in the thickness direction thereof; the bottom shell further comprises a plurality of support columns arranged at intervals on the shell main body, and the support columns are arranged protruding from the surface of the shell main body; when the circuit board is arranged in the mounting groove, the support columns are arranged penetrating the opening hole.

[0008] In an exemplary embodiment of the present application, a second glue injection gap is formed between the outer wall of the support column and the side wall of the opening, a second groove is concavely arranged on the surface of the shell body around the area of the support column, and the second groove is in communication with the second glue injection gap; the sealant can be filled into the second groove through the second glue injection gap to form a third sealant layer in the second groove and a fourth sealant layer in the second glue injection gap.

[0009] In an exemplary embodiment of the present application, the display module further comprises lamp beads arranged in an array on the circuit board, the lamp beads comprise lamp pins, and the lamp beads are arranged on the circuit board through the lamp pins; the sealant can be filled between adjacent lamp beads to form a fifth sealant layer, and the height of the fifth sealant layer is greater than the height of the lamp pins.

[0010] In an exemplary embodiment of the present application, the sealant can be filled between the lamp beads at the edge and the outer edge of the circuit board to form a sixth sealant layer.

[0011] In an exemplary embodiment of the present application, the display module further comprises a protective plate arranged on one side of the bottom shell, the protective plate can cover the circuit board, and the protective plate and the bottom shell are detachably connected.

[0012] The second aspect of the present application provides a display screen, comprising:

[0013] a box body; and

[0014] The display module of any one of the above, the bottom shell in the display module is fixed on the box body.

[0015] The display module and the display screen of the present application have at least the following beneficial effects:

[0016] The display module of the present application comprises a circuit board, a bottom shell and a sealant, the circuit board is carried in the mounting groove of the bottom shell, when the circuit board is installed in the mounting groove, a first glue injection gap is formed between the circuit board and the inner side wall of the mounting groove, an annular first groove is concavely arranged at the position close to the outer circumferential side of the bottom shell at the groove bottom of the mounting groove, the first groove is in communication with the first glue injection gap, and the sealant can be filled into the first groove from the first glue injection gap to form a first sealant layer in the first groove and a second sealant layer in the first glue injection gap. The second sealant layer in the first glue injection gap can be used as the first waterproof, when the second sealant layer fails, the first sealant layer in the first groove can be used as the second waterproof, and through the two waterproofs, the waterproof effect of the display module can be greatly increased.

[0017] Other features and advantages of the present application will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the application.

[0018] It should be understood that the general description and detailed description below are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings hereof are incorporated into the specification and constitute a part of the specification, illustrating embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0020] Figure 1 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the sealing glue is arranged between the circuit board and the bottom shell, is shown.

[0021] Figure 2 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the circuit board is arranged with a plurality of lamp beads in an array, is shown.

[0022] Figure 3 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the circuit board is arranged with a plurality of lamp beads in an array, is shown.

[0023] Figure 4 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the circuit board is arranged with a plurality of lamp beads in an array, is shown.

[0024] Figure 5 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the circuit board is arranged with a plurality of lamp beads in an array, is shown.

[0025] Figure 6 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the circuit board is arranged with a plurality of lamp beads in an array, is shown.

[0026] Figure 7 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the circuit board is arranged with a plurality of lamp beads in an array, is shown.

[0027] Figure 8 A structure schematic diagram of the structure provided by the embodiment of the present application, in which the circuit board is arranged with a plurality of lamp beads in an array, is shown.

[0028] Explanation of reference signs:

[0029] 100, display module; 110, circuit board; 111, opening; 112, through hole; 120, bottom shell; 121, shell body; 1210, first threaded hole; 122, fixing column; 123, retaining edge; 124, support column; 125, second threaded hole; 130, mounting groove; 140, first glue injection gap; 150, first groove; 160, sealing glue; 170, fastener; 180, second glue injection gap; 190, second groove; 1100, lamp bead; 1200, protective plate; 1201, through hole; 1202, mounting hole; 1300, fixing piece. DETAILED DESCRIPTION

[0030] Example implementations are now described with reference to the drawings; however, these descriptions are not intended to limit the scope of the application, but are intended to provide example examples of implementing the application. The descriptions as set forth herein are not intended to be exhaustive or otherwise limit the application as claimed to the precise forms disclosed. Many modifications and variations are possible in light of this disclosure without departing from the intended scope of the application, and it is to be understood that no limitation of the scope of the claimed application is intended by assertion of the described examples to practice with additional or alternative examples that fall within the intended scope of the application.

[0031] In the present application, the terms "first", "second", "third", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In addition, the described features, structures or characteristics can be combined in any suitable way in one or more embodiments. In the following description, many specific details are provided to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be used. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring the aspects of the present application.

[0034] The display module provided by the embodiments of the present application can display different patterns, symbols and the like, and can form a display screen. The display screen formed can be an outdoor display screen or an indoor display screen. The specific application can be selected according to actual conditions, and is not limited herein.

[0035] Figure 1 A structure schematic diagram of the circuit board and the bottom shell provided by the present application is shown. Figure 2 A structure schematic diagram of the circuit board provided by the present application is shown.

[0036] In some embodiments of the present application, as shown in Figure 1 and Figure 2 , the display module 100 can include a circuit board 110. The circuit board 110 can be a printed circuit board 110 (PCB). The circuit board 110 has oppositely arranged front and back surfaces. The front surface can be used to place the lamp beads 1100 described below, and the back surface is placed at the mounting groove 130 described below.

[0037] It should be noted that the circuit board 110 can have a square structure, or can have a circular, elliptical or other shape, which is not specifically limited herein.

[0038] Figure 3 A structure schematic diagram of the bottom shell provided by the present application is shown. Figure 4 A structure schematic diagram of the bottom shell provided by the present application is shown. Figure 5 A structure schematic diagram of the circuit board provided by the present application is shown.

[0039] In some embodiments of the present application, as shown in Figure 3 and Figure 4 , the display module 100 can further include a bottom shell 120. The surface of the bottom shell 120 is provided with a mounting groove 130 for mounting the circuit board 110. The back surface of the circuit board 110 can be placed in the mounting groove 130 to mount the circuit board 110.

[0040] As shown in Figure 5 , a first glue injection gap 140 is formed between the side wall of the circuit board 110 and the inner side wall of the mounting groove 130. The bottom of the mounting groove 130 is recessed with an annular first recess 150 near the outer circumferential side of the bottom shell 120. The first recess 150 is in communication with the first glue injection gap 140.

[0041] In some embodiments of the present application, as shown in Figure 1 and Figure 5As shown, the display module 100 can further include a sealant 160. The sealant 160 can be filled from the first glue-filling gap 140 into the first groove 150 to form a first sealant layer in the first groove 150, and can also form a second sealant layer in the first glue-filling gap 140.

[0042] It can be understood that the sealant 160 can be filled into the first glue-filling gap 140 and the first groove 150 after the circuit board 110 is placed in the mounting groove 130. When the sealant 160 is injected into the first groove 150 and the first glue-filling gap 140, the sealant 160 is in a liquid and flowable state, so that the sealant 160 can flow from the first glue-filling gap 140 into the first groove 150.

[0043] In addition, the liquid sealant 160 can become solid after a period of time or after heating or cooling treatment of the sealant 160, to form a first sealant layer (not shown in the figure) in the first groove 150, and a second sealant layer (not shown in the figure) in the first glue-filling gap 140.

[0044] The present application forms two waterproof structures between the circuit board 110 and the bottom shell 120 through the second sealant layer of the first glue-filling gap 140 and the first sealant layer in the first groove 150, so that even if the second sealant layer in the first glue-filling gap 140 cracks or fails, the first sealant layer in the first groove 150 can be used as a second waterproof structure to prevent water from flowing into the display module 100 and ensure the display effect of the display module 100.

[0045] That is, the present application forms two waterproof structures between the circuit board 110 and the first through the first sealant layer and the second sealant layer, which can effectively improve the waterproof effect of the display module 100.

[0046] It is worth mentioning that the shape of the first groove 150 can be designed according to the shape of the circuit board 110; for example, the circuit board 110 is square, and the shape of the first groove 150 is a ring-shaped square groove, as shown in Figure 3 The circuit board 110 is circular, and the shape of the first groove 150 is a ring-shaped circular groove.

[0047] In addition, as shown in Figure 1 The circuit board 110 can compress the first sealant layer in the first groove 150 and make the first sealant layer in the first groove 150 not exposed, so that the first sealant layer under the circuit board 110 is not easy to crack and peel off, which can better effectively prevent water and improve the waterproof effect.

[0048] In this way, by designing the shape of the first groove 150 to be the same as the shape of the circuit board 110, it can be ensured that the circuit board 110 and the bottom wall of the mounting groove 130 are both provided with a first sealant layer, so that water cannot leak into the display module 100 from any part of the circuit board 110, ensuring the uniformity of the sealing of the display module 100, and thus improving the waterproof effect of the display module 100.

[0049] In some embodiments of the present application, the depth of the first groove 150 in the thickness direction of the circuit board 110 is 0.15mm to 0.2mm, for example, 0.15mm, 0.18mm, 0.19mm, or 0.2mm. The depth of the first groove 150 is set to be between 0.15mm and 0.2mm, which can effectively ensure the thickness of the first sealant layer and improve the waterproof effect of the first sealant layer.

[0050] In some embodiments of the present application, as shown in Figure 2 The circuit board 110 can be provided with an opening 111 extending in the thickness direction. The opening 111 can be circular, square, triangular, or other shapes. The opening can facilitate the exposure of the support column 124 described below, so as to facilitate the connection between the support column 124 and the protective plate 1200 described below.

[0051] In some embodiments of the present application, as shown in Figure 4 The bottom shell 120 can include a shell body 121. The shell body 121 is recessed towards the side away from the circuit board 110. The upper surface of the shell body 121 is provided with a first threaded hole 1210 and a first groove 150. The first threaded hole 1210 is disposed closer to the inside of the shell body 121 than the first groove 150.

[0052] In some embodiments of the present application, as shown in Figure 2 and Figure 5 The circuit board 110 is provided with a through hole 112 extending in the thickness direction thereof. The through hole 112 is disposed corresponding to the first threaded hole 1210. A screw, rivet, or other fastener 170 is passed through the through hole 112 and the first threaded hole 1210 to fixedly connect the circuit board 110 and the shell body 121, so as to fix the circuit board 110 on the bottom shell 120 and prevent the circuit board 110 from shaking, thereby ensuring the display effect of the display module 100.

[0053] In some embodiments of the present application, as shown in Figure 4As shown, the lower surface of the shell body 121 is provided with a plurality of fixing columns 122 extending towards the circuit board 110, the plurality of fixing columns 122 are arranged at intervals, and the upper surface of the fixing column 122 is flush with the upper surface of the shell body 121. The upper surface of the fixing column 122 abuts against the back surface of the circuit board 110, and the fixing column 122 can support the remaining positions of the circuit board 110, thereby preventing the circuit board 110 from collapsing into the shell body 121.

[0054] In some embodiments of the present application, referring to Figure 4 As shown, the bottom shell 120 can further include an annular retaining edge 123. The retaining edge 123 is arranged around the outer periphery of the upper surface of the shell body 121. The retaining edge 123 extends in the thickness direction of the circuit board 110, and the retaining edge 123 and the shell body 121 form the mounting groove 130. The inner side wall of the retaining edge 123 and the side wall of the circuit board 110 form the first glue injection gap 140, and the first groove 150 is arranged on one side of the upper surface of the shell body 121 close to the retaining edge 123.

[0055] It can be understood that the retaining edge 123 can protect the side edges of the circuit board 110, thereby preventing the circuit board 110 from being damaged due to collision with the outside world, and ensuring the integrity of the circuit board 110.

[0056] In some embodiments of the present application, referring to Figure 4 and Figure 5 As shown, the bottom shell 120 can further include a plurality of support columns 124 arranged at intervals on the shell body 121. The support column 124 corresponds to the fixing column 122 on the shell body 121 one by one, and the support column 124 can be arranged on the upper surface of the fixing column 122; that is, the support column 124 protrudes from the surface of the shell body 121. When the circuit board 110 is arranged in the mounting groove 130, the support column 124 is arranged in the opening 111, so that the support column 124 can be detachably connected with the protection plate 1200 described below, thereby supporting the protection plate 1200.

[0057] In some embodiments of the present application, referring to Figure 5 As shown, the outer side wall of the support column 124 and the side wall of the opening 111 form a second glue injection gap 180, and the surface of the shell body 121 surrounding the region of the support column 124 is recessed to form a second groove 190; that is, the second groove 190 is recessed at the connection position of the upper surface of the fixing column 122 and the support column 124. The second groove 190 and the second glue injection gap 180 are in communication with each other, and the sealing glue 160 can be filled into the second groove 190 through the second glue injection gap 180, so as to form a third sealing glue layer (not marked in the figure) in the second groove 190 and a fourth sealing glue layer (not marked in the figure) in the second glue injection gap 180.

[0058] It can be understood that two waterproof structures can be formed by forming the third sealant layer and the fourth sealant layer between the circuit board 110 and the support column 124. Even if the fourth sealant layer fails or cracks, the third sealant layer can be used as a second waterproof structure. Through the two waterproof structures, the waterproof effect of the display module 100 can be greatly improved.

[0059] In addition, the sealant 160 forms the third sealant layer and the fourth sealant layer between the circuit board 110 and the support column 124 in the same way as the first sealant layer and the second sealant layer formed by the sealant 160 between the circuit board 110 and the bottom shell 120.

[0060] For example, the sealant 160 can flow into the second groove 190 through the second glue injection gap 180 when the circuit board 110 is placed on the fixed column 122, so as to form the third sealant layer in the second groove 190 and the fourth sealant layer in the second glue injection gap 180. When the sealant 160 fills into the second glue injection gap 180 and the second groove 190, the sealant 160 is solidified in the second groove 190 and the second glue injection gap 180 by standing, heat treatment or cold treatment, so as to achieve the waterproof effect.

[0061] It should be noted that when the circuit board 110 is placed on the mounting groove 130, the circuit board 110 also covers the part of the third sealant layer in the second groove 190, so as to press the third sealant layer and not expose it, so that the third sealant layer is not easy to crack and peel off, and better waterproof effect can be achieved.

[0062] In some embodiments of the present application, in the thickness direction of the circuit board 110, the height of the first sealant layer is equal to the height of the third sealant layer, and the height of the second sealant layer is equal to the height of the fourth sealant layer. The sealing effect at the edge of the circuit board 110 can be ensured to be the same as the sealing effect at the opening 111 of the circuit board 110, so as to ensure that the waterproof effects at the two places are the same, and the waterproof effect of the display module 100 is ensured.

[0063] In some embodiments of the present application, as shown in Figure 2 and Figure 5 The display module 100 can further include a lamp bead 1100 arranged on the circuit board 110. The lamp bead 1100 can be arranged on the front surface (i.e. the light emitting surface) of the circuit board 110, that is, the lamp bead 1100 emits light away from the bottom shell 120. The lamp bead 1100 can be an LED lamp bead 1100, a mini LED lamp bead 1100 or a micro LED lamp bead 1100.

[0064] The lamp bead 1100 can include lamp pins (not shown in the figure). The lamp bead 1100 can be arranged on the circuit board 110 through the lamp pins, so that the lamp bead 1100 is electrically connected with the circuit board 110 to control the lamp bead 1100 to emit light.

[0065] In some embodiments of the present application, referring to Figure 2 As shown, the lamp bead 1100 and the opening 111 are arranged at a distance from each other to ensure the light emitting effect of the lamp bead 1100. The sealing glue 160 can also be filled between adjacent lamp beads 1100 to waterproof the circuit on the front surface of the circuit board 110, so as to avoid affecting the light emitting effect of the lamp bead 1100, thereby ensuring the display effect of the display module 100.

[0066] It should be noted that the sealing glue 160 is in a liquid state when filled between the lamp beads 1100, and becomes solid after standing, heat treatment or cold treatment for a period of time, and is sealed between adjacent lamp beads 1100.

[0067] It can be understood that the top surface of the support column 124 at the opening can not be filled with the sealing glue 160, and the sealing glue 160 can be filled in the gap between the support column 124 and the adjacent lamp bead 1100. The sealing glue 160 between the support column 124 and the adjacent lamp bead 1100 is connected with the fourth sealing glue layer, which can not only waterproof the circuit board 110, but also further improve the waterproof effect between the support column 124 and the opening 111. By not filling the sealing glue 160 on the top surface of the support column 124, it can be ensured that the protective plate 1200 will not be warped at the support column 124 when the protective plate 1200 is installed later, and the distance between the lamp bead 1100 and the protective plate 1200 is the same, thereby ensuring that the light emitting effect of each lamp bead 1100 is consistent.

[0068] In addition, referring to Figure 1 As shown, the sealing glue 160 is filled between adjacent lamp beads 1100 to form a fifth sealing glue layer (not labeled in the figure). The height of the fifth sealing glue layer can be less than the height of the lamp bead 1100 and greater than the height of the lamp pin, so as to waterproof the lamp pin. The lamp bead 1100 can be waterproofed, and the light emitting effect of the lamp bead 1100 can be avoided, thereby ensuring the display effect of the display module 100.

[0069] In some embodiments of the present application, the ratio of the height of the fifth sealing glue layer to the height of the lamp bead 1100 can be in the range of 0.82 to 1.0, such as 0.82, 0.9, 0.95, 1.0, etc. The height of the fifth sealing glue layer can be changed according to the height of the lamp bead 1100 to meet the waterproof effect of different display modules 100.

[0070] In some embodiments of the present application, referring to Figure 1As shown, the sealant 160 can fill between the retaining edge 123 and the lamp beads 1100 at the outer edge of the circuit board 110 to form a sixth sealant layer (not labeled in the figure). The sixth sealant layer is connected with the second sealant layer, which can not only waterproof the circuit on the edge of the circuit board 110, but also further improve the waterproof effect between the circuit board 110 and the bottom shell 120, thereby improving the waterproof effect of the display module 100.

[0071] In some embodiments of the present application, the sixth sealant layer has the same height as the fifth sealant layer, so as to ensure that the sealant layers on the circuit board 110 are at the same height, thereby ensuring the waterproof effect.

[0072] In some embodiments of the present application, the first glue injection gap 140 formed by the inner side wall of the retaining edge 123 and the side wall of the circuit board 110 is 0.1mm to 0.2mm, for example, 0.1mm, 0.15mm, 0.17mm, 0.2mm. By setting the first glue injection gap 140 to 0.1mm to 0.2mm, it can be ensured that the sealant 160 can flow into the first groove 150 through the first glue injection gap 140, thereby ensuring the waterproof effect.

[0073] Correspondingly, the second glue injection gap 180 formed by the opening 111 and the support column 124 can also be 0.1mm to 0.2mm, for example, 0.1mm, 0.15mm, 0.17mm, 0.2mm. By setting the second glue injection gap 180 to 0.1mm to 0.2mm, it can be ensured that the sealant 160 can flow into the second groove 190 through the second glue injection gap 180, thereby ensuring the waterproof effect.

[0074] Figure 6 A structure schematic diagram of the protective plate provided by the present application is shown. Figure 7 A structure schematic diagram of the protective plate provided by the present application is shown. Figure 8 A structure schematic diagram of the protective plate provided by the present application is shown.

[0075] In some embodiments of the present application, referring to Figure 6 to Figure 8 As shown, the display module 100 further includes a protective plate 1200 covering one side of the bottom shell 120. The protective plate 1200 can cover the circuit board 110, that is, the protective plate 1200 is arranged on the upper layer of the circuit board 110 and the sealant 160, so as to ensure that the fifth sealant layer on the circuit board 110 will not fall off, and to protect the circuit on the circuit board 110, thereby ensuring the light emitting effect of the lamp beads 1100. The protective plate 1200 is detachably connected with the bottom shell 120, for example, through screw thread, buckle, latch and other detachable connection modes, so as to facilitate replacement or maintenance of the circuit board 110.

[0076] In some embodiments of the present application, the protective plate 1200 can be directly transparent, which can protect the lamp beads 1100 and improve the light-emitting effect of the lamp beads 1100 and the display effect of the display module 100.

[0077] In some embodiments of the present application, as shown in Figure 6 and Figure 7 , the protective plate 1200 can be provided with a through hole 1201. When the protective plate 1200 is placed on one side of the bottom shell 120, the lamp beads 1100 are arranged in the through hole 1201 to avoid interference of the protective plate 1200 with the light of the lamp beads 1100, ensure the light-emitting effect of the lamp beads 1100, and further ensure the display effect of the display module 100.

[0078] In some embodiments of the present application, as shown in Figure 8 , the outer edge of the protective plate 1200 is overlapped on the side of the retaining edge 123 away from the shell main body 121, and the remaining positions of the protective plate 1200 can be overlapped on the fifth sealing adhesive layer, the sixth sealing adhesive layer, and the upper top surface of the support column 124 to support the protective plate 1200.

[0079] It can be understood that, as shown in Figure 8 , the support column 124 passes through the opening 111 and protrudes from the surface of the circuit board 110, and the height of the support column 124 protruding from the circuit board 110 is the same as the height of the fifth sealing adhesive layer and the sixth sealing adhesive layer. That is, the upper top surface of the retaining edge 123, the upper top surface of the fifth sealing adhesive layer, the upper top surface of the sixth sealing adhesive layer, and the upper top surface of the support column 124 are flush, so that when the protective plate 1200 is placed on the bottom shell 120, the protective plate 1200 is in the same plane, the distance between each lamp bead 1100 and the upper top surface of the protective plate 1200 is the same, and the light-emitting brightness of each lamp bead 1100 is the same, thereby ensuring the display effect of the display module 100.

[0080] In addition, the support column 124 and the fixing column 122 can be integrally formed or separately formed, which can be designed according to different embodiments. The second threaded hole 125 is arranged on the support column 124 and the fixing column 122, and the second threaded hole 125 of the support column 124 corresponds to the second threaded hole 125 of the fixing column 122. The mounting hole 1202 is arranged on the protective plate 1200. When the protective plate 1200 is placed on the bottom shell 120, the mounting hole 1202 corresponds to the second threaded hole 125 of the support column 124 and the fixing column 122, and a fixing member 1300 such as a screw or a rivet is arranged in the mounting hole 1202 and the second threaded hole 125 to fix the protective plate 1200 on the bottom shell 120.

[0081] It is worth mentioning that the sealant 160 can seal the fastener 1300 between the circuit board 110 and the shell body 121, or can not be sealed, that is, the sealant 160 can cover the fastener 170, or can not cover the fastener 170, as long as it does not cause the protective plate 1200 to warp.

[0082] The embodiment of the present application also provides a display screen, which comprises a box (not shown in the figure) and the display module 100 described in any of the above.

[0083] It should be noted that the display screen can be composed of one display module 100 and one box, or can be composed of multiple display modules 100 and multiple boxes, the display module 100 corresponds to the box one by one, and adjacent boxes can be spliced with each other to form a display screen with a larger light-emitting surface.

[0084] In the description of the present application, the description of the terms "some embodiments", "exemplarily", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0085] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, therefore any changes or modifications made according to the claims and the specification of the present application shall be within the scope of the present application.

Claims

1. A display module, characterized by The display module comprises: a circuit board; a bottom shell, a surface of which is provided with a mounting groove for mounting the circuit board; the circuit board is arranged in the mounting groove, a first glue injection gap is formed between a side wall of the circuit board and an inner side wall of the mounting groove; a first annular groove is concavely arranged on a bottom of the mounting groove close to a position of an outer circumferential side of the bottom shell, and the first annular groove is in communication with the first glue injection gap; a sealing glue, which can be filled into the first annular groove from the first glue injection gap to form a first sealing glue layer in the first annular groove and a second sealing glue layer in the first glue injection gap.

2. The display module of claim 1, wherein, The bottom shell comprises a shell main body and an annular retaining edge connected to an outer periphery of the shell main body, and the shell main body and the retaining edge enclose the mounting groove; the first glue injection gap is formed between the side wall of the circuit board and an inner side wall of the retaining edge, and the first annular groove is arranged on a surface of the shell main body close to the retaining edge.

3. The display module of claim 2, wherein, The circuit board is provided with an opening hole penetrating in a thickness direction thereof; The bottom shell further comprises a plurality of support columns arranged at intervals on the shell main body, and the support columns are arranged protruding from a surface of the shell main body; when the circuit board is arranged in the mounting groove, the support columns are arranged penetrating the opening hole.

4. The display module of claim 3, wherein, A second glue injection gap is formed between an outer side wall of the support column and a side wall of the opening hole, a second annular groove is concavely arranged on a surface of the shell main body surrounding a region of the support column, and the second annular groove is in communication with the second glue injection gap; the sealing glue can be filled into the second annular groove through the second glue injection gap to form a third sealing glue layer in the second annular groove and a fourth sealing glue layer in the second glue injection gap.

5. The display module of claim 3, wherein, The display module further comprises lamp beads arranged in an array on the circuit board, and the lamp beads comprise lamp pins, and the lamp beads are arranged on the circuit board through the lamp pins; The sealing glue can be filled between adjacent lamp beads to form a fifth sealing glue layer, and a height of the fifth sealing glue layer is greater than a height of the lamp pins.

6. The display module of claim 5, wherein, The sealing glue can be filled between the lamp beads at a position of an outer edge of the circuit board and the retaining edge to form a sixth sealing glue layer.

7. The display module of claim 5, wherein, The display module further comprises a protective plate arranged on one side of the bottom shell, the protective plate can cover the circuit board, and the protective plate and the bottom shell are detachably connected.

8. A display screen, characterized by The display module comprises: a box body; and the display module of any one of claims 1 to 7, and the bottom shell in the display module is fixed on the box body. ​

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