Display module, preparation method thereof and display device

Abstract

The application discloses a display module, a preparation method thereof and a display device. The display module comprises a back plate and at least two display panels arranged on one side of the back plate. The back plate comprises a first back plate, a second back plate and a glue body arranged between the first back plate and the second back plate. The first back plate comprises a communication hole penetrating through the first back plate. The second back plate comprises a glue filling hole penetrating through the second back plate, and the glue body fills the glue filling hole. The display panel is arranged on the side of the second back plate away from the first back plate. In the thickness direction of the display module, the display panel overlaps with the glue filling hole, and the display panel is bonded to the back plate through the glue in the glue filling hole. According to the technical scheme, the communication hole and the glue filling hole are arranged in the back plate, so that the display panel is fixed on the surface of the back plate through the communication hole and the glue filling hole, and the display module formed by splicing the plurality of display panels has stable structure and good display effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display panel, in particular to a display module, a preparation method thereof and a display device. BACKGROUND

[0002] As the application scenarios of display panels are more and more, the size of the existing single display panel cannot meet the requirements of large display area scenarios. In order to solve this problem, a combined panel formed by combining multiple display panels is needed.

[0003] However, there are still some problems affecting the overall display effect that need to be solved when combining multiple display panels. SUMMARY

[0004] The display module, the preparation method thereof and the display device provided by the embodiments of the present application ensure the stable fixation of the display panel through the flow-through hole of the first back plate and the colloid filling hole in the second back plate, thereby ensuring the stability of the display module structure and the overall display effect of the display module.

[0005] In a first aspect, the embodiments of the present application provide a display module, comprising a back plate and at least two display panels arranged on one side of the back plate.

[0006] The back plate comprises a first back plate, a second back plate arranged oppositely and a colloid between the first back plate and the second back plate; the first back plate comprises a through hole penetrating through the first back plate; the second back plate comprises a colloid filling hole penetrating through the second back plate, and the colloid fills the colloid filling hole.

[0007] The display panel is arranged on the side of the second back plate away from the first back plate, and along the thickness direction of the display module, the display panel overlaps the colloid filling hole, and the display panel is bonded to the back plate through the colloid in the colloid filling hole.

[0008] In a second aspect, the embodiments of the present application provide a preparation method of a display module, comprising:

[0009] Providing a back plate, the back plate comprising a first back plate and a second back plate arranged oppositely; the first back plate comprising a through hole penetrating through the first back plate; the second back plate comprising a colloid filling hole penetrating through the second back plate;

[0010] Placing at least two display panels on the side of the second back plate away from the first back plate, and performing air extraction on the back plate through at least part of the through hole at a first air extraction rate, so as to fix the display panel on the surface of the back plate;

[0011] The back plate is injected with glue through the communication holes, so as to fill the glue between the first back plate and the second back plate and in the glue filling holes, and the display panel is bonded to the back plate through the glue in the glue filling holes.

[0012] In a third aspect, the display device provided by the embodiments of the present application comprises the display module of the first aspect.

[0013] The display module provided by the embodiments of the present application comprises a back plate and at least two display panels, the back plate comprises a first back plate and a second back plate, the display panel is located on the side of the second back plate away from the first back plate, and glue is arranged between the first back plate and the second back plate. Specifically, the first back plate comprises a communication hole penetrating through the first back plate, the second back plate comprises a glue filling hole, and the glue filling hole is filled with glue. The communication hole and the glue filling hole are arranged in the back plate, so as to fix the display panel on the surface of the back plate through the communication hole and the glue filling hole. Thus, the display module formed by splicing a plurality of display panels can be obtained, and the display module has stable structure and good display effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. 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.

[0015] Figure 1 is a structural schematic diagram of a display module provided by the embodiments of the present application;

[0016] Figure 2 is Figure 1 is a sectional structural schematic diagram along the section line A-A';

[0017] Figure 3 is a structural schematic diagram of a first back plate provided by the embodiments of the present application;

[0018] Figure 4 is Figure 3 is a sectional structural schematic diagram along the section line B-B';

[0019] Figure 5 is a structural schematic diagram of a second back plate provided by the embodiments of the present application;

[0020] Figure 6 is Figure 5 is a sectional structural schematic diagram along the section line C-C';

[0021] Figure 7 is Figure 1Another cross-sectional structure schematic diagram along the cross-sectional line A-A';

[0022] Figure 8 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0023] Figure 9 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0024] Figure 10 Another structure schematic diagram of the display panel provided by the embodiment of the application;

[0025] Figure 11 Another structure schematic diagram of the display panel provided by the embodiment of the application;

[0026] Figure 12 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0027] Figure 13 Another structure schematic diagram of the second back plate provided by the embodiment of the application;

[0028] Figure 14 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0029] Figure 15 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0030] Figure 16 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0031] Figure 17 Another control structure schematic diagram of the communication hole provided by the embodiment of the application;

[0032] Figure 18 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0033] Figure 19 Another structure schematic diagram of the first back plate provided by the embodiment of the application;

[0034] Figure 20 Another structure schematic diagram of the second back plate provided by the embodiment of the application;

[0035] Figure 21 Another structure schematic diagram of the second back plate provided by the embodiment of the application;

[0036] Figure 22 Another structure schematic diagram of the first back plate provided by the embodiment of the application; Figure 21 Another cross-sectional structure schematic diagram along the cross-sectional line D-D';

[0037] Figure 23 is another structural schematic view of a second back plate provided by an embodiment of the present application;

[0038] Figure 24 is Figure 23 is a sectional structural schematic view along sectional line E-E';

[0039] Figure 25 is another structural schematic view of a second back plate provided by an embodiment of the present application;

[0040] Figure 26 is Figure 25 is a sectional structural schematic view along sectional line F-F';

[0041] Figure 27 is another structural schematic view of a second back plate provided by an embodiment of the present application;

[0042] Figure 28 is Figure 1 is another sectional structural schematic view along sectional line A-A';

[0043] Figure 29 is a flow chart of a display module preparation method provided by an embodiment of the present application;

[0044] Figure 30 is a flow chart of another display module preparation method provided by an embodiment of the present application;

[0045] Figure 31 is a flow chart of another display module preparation method provided by an embodiment of the present application;

[0046] Figure 32 is a flow chart of another display module preparation method provided by an embodiment of the present application;

[0047] Figure 33 is a flow chart of another display module preparation method provided by an embodiment of the present application;

[0048] Figure 34 is a structural schematic view of a display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the protection scope of the present application.

[0050] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a system, product or device including a series of units does not necessarily have to be limited to the clearly listed steps or units, but can include other units not clearly listed or inherent to such products or devices.

[0051] Figure 1 is a structural schematic diagram of a display module provided by an embodiment of the present application, Figure 2 is Figure 1 is a sectional structural schematic diagram along the section line A-A', Figure 3 is a structural schematic diagram of a first back plate provided by an embodiment of the present application, Figure 4 is Figure 3 is a sectional structural schematic diagram along the section line B-B', Figure 5 is a structural schematic diagram of a second back plate provided by an embodiment of the present application, Figure 6 is Figure 5 is a sectional structural schematic diagram along the section line C-C', Figure 7 is Figure 1 is another sectional structural schematic diagram along the section line A-A', with reference to Figures 1 to 7 , an embodiment of the present application provides a display module 10, comprising a back plate 100 and at least two display panels 200 arranged on one side of the back plate 100: the back plate 100 comprises a first back plate 110 and a second back plate 120 arranged oppositely, and a colloid 300 located between the first back plate 110 and the second back plate 120; the first back plate 110 comprises a communication hole 111 penetrating through the first back plate 110; the second back plate 120 comprises a colloid filling hole 121 penetrating through the second back plate 120, and the colloid 300 fills the colloid filling hole 300; the display panel 200 is located on the side of the second back plate 120 away from the first back plate 110, and along the thickness direction of the display module 10, the display panel 200 overlaps with the colloid filling hole 121, and the display panel 200 is bonded with the back plate 100 through the colloid 300 in the colloid filling hole 121.

[0052] The display module 10 comprises a display panel 200, the display panel 200 has a display function, and the display effect of the display module 10 is realized. For example, the display panel 200 can be a liquid crystal display panel, or an organic light-emitting display panel, etc., and the specific type of the display panel 200 is not limited in the embodiments of the present application. Further, the display module 10 comprises at least two display panels 200, that is, a plurality of display panels 200 can be combined and spliced, so as to realize the large-size display effect of the display module 10 and ensure better display effect of the display module 10 as a whole.

[0053] Further, referring to Figure 2 , the display module 10 further comprises a back plate 100, the back plate 100 comprises a first back plate 110 and a second back plate 120, and the display panel 200 is located on the side of the second back plate 120 away from the first back plate 110 and is attached. That is, the back plate 100 serves as a supporting structure of the display panel 200, provides a space for the combination of a plurality of display panels 200, and further ensures that the display module 10 can realize the large-area display effect of the spliced display panels 200. Wherein, the gel 300 is arranged between the first back plate 110 and the second back plate 120, the back plate 100 and the display panel 200 are fixed by the gel 300, and the structural stability of the display module 10 is ensured.

[0054] Specifically, referring to Figure 3 , the first back plate 110 comprises a communication hole 111, and referring to Figure 4 , the communication hole 111 penetrates the first back plate 110. The space between the first back plate 110 and the second back plate 120 is formed into a negative pressure by air extraction through the communication hole 111, so as to facilitate the stable adsorption of the display panel 200 on the second back plate 120. At the same time, the gel 300 is also injected between the first back plate 110 and the second back plate 120 through the communication hole 111. Further, referring to Figure 5 , the second back plate 120 comprises a gel filling hole 121, and referring to Figure 6 , the gel filling hole 121 penetrates the second back plate 120. And the gel 300 fills the gel filling hole 300, that is, the gel 300 flows into the space between the second back plate 120 and the display panel 200 through the gel filling hole 300, so as to ensure the fixed contact between the display panel 200 and the second back plate 120. For example, referring to Figure 7, the gas suction and the injection of the gel 300 are realized through the communication hole 111 of the first back plate 110, the gel 300 fills the gel filling hole 121 of the second base plate 120, the display panel 200 is bonded with the back plate 100 through the gel 300 in the gel filling hole 121, the stability of the overall structure of the display module 10 is ensured, and then the multiple display panels 200 fixedly arranged in the display module 10 can also be ensured, and the large-size display effect is realized. Further, the display module 10 as a whole can be planar or curved, that is, based on the communication hole and the gel filling hole included in the back plate 100, the stability of the structure of the display module 10 in various forms can be ensured, and the display effect of the display module 10 is ensured.

[0055] In summary, the display module provided by the embodiment of the present application includes a back plate and at least two display panels, the back plate includes a first back plate and a second back plate, the display panel is located on the side of the second back plate away from the first back plate, and the gel is arranged between the first back plate and the second back plate. The communication hole and the gel filling hole are arranged in the back plate, so as to fix the display panel on the surface of the back plate through the communication hole and the gel filling hole, so as to obtain the display module formed by splicing the multiple display panels, the display module is stable in structure, and the display effect is good.

[0056] With reference to the foregoing Figure 3 And Figure 4 The communication hole 111 is used for time-division gas suction and gel injection between the first back plate 110 and the second back plate 120.

[0057] Specifically, for the through hole 111 in the first back plate 110, it has two functions of pumping and injecting glue. Specifically, for pumping, after the first back plate 110, the second back plate 120 and the display panel 200 are placed according to the designed relative position, the space between the first back plate 110 and the second back plate 120 is pumped away, and then the first back plate 110 and the second back plate 120 form a negative pressure relative to other positions, so that the pressure between the first back plate 110 and the second back plate 120 and the atmospheric pressure forms a pressure difference, and under the action of the pressure difference, the display panel 200 can be attached to the second back plate 120, and the display panel 200 is stably fixed at the position of the second back plate 120 during the later injection of glue. Further, for injecting glue, the glue 300 is injected into the space between the first back plate 110 and the second back plate 120 through the through hole 111, so as to ensure the bonding between the first back plate 110 and the second back plate 120, and then ensure the fixed connection of the first back plate 110 and the second back plate 120. At the same time, the second back plate 120 includes a glue filling hole 121, and the glue 300 injected through the through hole 111 also fills the glue filling hole 121, and even can flow into the space between the second back plate 120 and the display panel 200 through the glue filling hole 121, so as to ensure that the second back plate 120 and the display panel 200 can be adhesively connected through the glue in the glue filling hole 121 or through the glue flowing into the space between the second back plate 120 and the display panel 200, so as to fix the display panel 200 on the surface of the second back plate 120. In general, through the injection and pumping of the through hole 111, the stable connection between the first back plate 110, the second back plate 120 and the display panel 200 is ensured, and then the structural stability of the display module 10 is ensured.

[0058] Further, for the through hole 111, the implementation process of pumping and injecting glue has time-sharing, that is, pumping and injecting glue are not completed at the same time. For example, the through hole 111 can first pump, and then inject glue to ensure the stable fixing effect of the display panel 200 and the back plate 100 as a whole.

[0059] Figure 8 is another structural schematic diagram of a first back plate provided by an embodiment of the application, referring to Figure 8 , part of the through hole 111 is used for pumping and injecting glue between the first back plate 110 and the second back plate 120, and the rest of the through hole 111 is used for injecting glue between the first back plate 110 and the second back plate 120.

[0060] Specifically, referring to Figure 8The first back plate 110 includes a plurality of communication holes 111. The communication holes 111 have two working processes of glue injection and air extraction. The plurality of communication holes 111 are functionally distinguished, i.e., part of the communication holes 111 only realize the glue injection function, and part of the communication holes 111 realize both the glue injection and air extraction functions, thereby providing flexible setting of air extraction and glue injection.

[0061] For example, referring to FIG. 1, Figure 8 The first back plate 110 includes a plurality of communication holes 111. Further, the communication holes 111 include communication holes 111A and communication holes 111B. The communication holes 111A are used to perform air extraction and glue injection on the space between the first back plate 110 and the second back plate 120 at different times, i.e., the communication holes 111A perform both the air extraction and glue injection working processes at different times. The communication holes 111B are only used to perform glue injection on the air between the first back plate 110 and the second back plate 120, i.e., the communication holes 111B only complete the glue injection working process. It should be noted that, Figure 8 In the embodiment, only part of the communication holes 111 are shown as the communication holes 111A or the communication holes 111B, and the remaining communication holes 111 are not specifically shown. The embodiment does not specifically limit whether the communication holes 111 at different positions in the first back plate 110 realize one working process or two working processes.

[0062] Figure 9 FIG. 2 is another structural schematic diagram of a first back plate provided by the embodiment. Referring to FIG. 2, Figure 9 Part of the communication holes 111 are used to perform air extraction and glue injection on the space between the first back plate 110 and the second back plate 120 at different times, and the remaining part of the communication holes 111 are used to perform air extraction on the space between the first back plate 110 and the second back plate 120.

[0063] Further, referring to FIG. 3, Figure 9 The first back plate 110 includes a plurality of communication holes 111. Further, the communication holes 111 include communication holes 111A and communication holes 111C. The communication holes 111A are used to perform air extraction and glue injection on the space between the first back plate 110 and the second back plate 120 at different times, i.e., the communication holes 111A perform both the air extraction and glue injection working processes at different times. The communication holes 111C are only used to perform air extraction on the air between the first back plate 110 and the second back plate 120, i.e., the communication holes 111C only complete the air extraction working process. It should be noted that, Figure 8 In the embodiment, only part of the communication holes 111 are shown as the communication holes 111A or the communication holes 111C, and the remaining communication holes 111 are not specifically shown. The embodiment does not specifically limit whether the communication holes 111 at different positions in the first back plate 110 realize one working process or two working processes.

[0064] Figure 10is another structural schematic diagram of a display panel provided by an embodiment of the present application, referring to Figure 10 The back plate 100 includes at least two panel setting areas 201, and the display panel 200 is arranged in the panel setting area 201. There are two panel setting areas 201, and the number of the through holes 111 in the panel setting area 201 close to the edge of the back plate 100 is greater than the number of the through holes 111 in the panel setting area 201 close to the center of the back plate 100.

[0065] Specifically, the back plate 100 includes the panel setting area 201, which is the area where the display panel 200 is placed. Further, referring to Figure 10 For example, the display module 10 includes nine panel setting areas 201, and based on the number of the specific panel setting areas 201, the display size can be adjusted according to the actual needs, which is not limited in the embodiment of the present application.

[0066] Further, referring to Figure 10 For the two panel setting areas 201, for example, the panel setting area 201B close to the center of the back plate 100 and the panel setting area 201A far away from the center of the back plate 100, the number of the through holes 111 close to the edge of the back plate 100 in the panel setting area 201A is greater than the number of the through holes 111 far away from the edge of the back plate 100 in the panel setting area 201B, that is Figure 10 The number of the through holes 111 in the panel setting area 201A is greater than the number of the through holes 111 in the panel setting area 201B. It should be noted that the number of the specific through holes 111 in the panel setting area 201A and the panel setting area 201B is not limited, which is only exemplified in the figure. Further, the distribution density of the through holes 111 in the panel setting area 201A can also be greater than the distribution density of the through holes 111 in the panel setting area 201B, and based on the difference in the distribution density, the area of the through holes 111 per unit area can be different. In general, through the different setting of the through holes 111 in the panel setting area 201A and the panel setting area 201B, the number of the through holes 111 close to the edge of the back plate 100 is ensured to be greater, the overall edge of the display module 10 is ensured to be better and more stably fixed and connected, and the structural stability of the display module 10 is ensured. It should be noted that Figure 10 The display module 10 is shown, and only the internal through holes 111 are shown by the dashed line in the figure, and the colloidal filling hole 121 in the display module 10 is not shown, so as to clearly understand the setting trend of the through holes 111.

[0067] Figure 11 is another structural schematic diagram of a display panel provided by an embodiment of the present application, referring to Figure 11The back plate 100 includes at least two panel setting areas 201, and the display panel 200 is arranged in the panel setting area 201; the communication hole 111 includes a glue injection hole 112, and the glue injection hole 112 is used for injecting glue into the space between the first back plate 110 and the second back plate 120; there are two panel setting areas 201, and the number of glue injection holes 112 in the panel setting area 201 close to the edge of the back plate 100 is less than the number of glue injection holes 112 in the panel setting area 201 close to the center of the back plate 100.

[0068] Specifically, referring to FIG. 1, the display module 10 includes two panel setting areas 201. Figure 11 Figure 11 In FIG. 1, only the internal communication hole 111 is shown by a dashed line, and the glue filling hole 121 in the display module 10 is not shown, so as to clearly understand the setting trend of the communication hole 111. In addition, the communication hole 111 in the figure includes a glue injection hole 112 for realizing glue injection and a gas extraction hole 113 for realizing gas extraction.

[0069] Further, the number of glue injection holes 112 in the panel setting area 201A close to the edge of the back plate 100 is less than the number of glue injection holes 112 in the panel setting area 201B away from the edge of the back plate 100, that is, referring to FIG. 1, the number of glue injection holes 112 in the panel setting area 201A is less than the number of glue injection holes 112 in the panel setting area 201B. Figure 11 In other words, based on the difference in the distribution density of the glue injection hole 112, it can be the difference in the number of glue injection holes 112, or the area of the glue injection hole 112 in different regions can be different. In general, by differentially setting the glue injection hole 112 according to the distance from the edge of the back plate 100, it is ensured that the glue 300 injected through the glue injection hole 112 can uniformly diffuse to the periphery of the back plate 100, thereby ensuring the bonding stability of the display module 10, and further ensuring the display effect of the display module 10.

[0070] Figure 12 FIG. 2 is another structural schematic diagram of a first back plate provided by an embodiment of the present application, Figure 13 FIG. 3 is another structural schematic diagram of a second back plate provided by an embodiment of the present application, referring to FIG. 2, Figure 12 and FIG. 4, Figure 13 The back plate 100 includes at least two panel setting areas 201, and the display panel 200 is arranged in the panel setting area 201; the first back plate 110 in each panel setting area 201 includes a communication hole 111, and the second back plate 120 in each panel setting area 201 includes a glue filling hole 112.

[0071] ​The back plate 100 includes the communication hole 111 in the first back plate 110 and the glue filling hole 112 in the second back plate 120, and the processes of pumping, glue injection and bonding are realized through the communication hole 111 and the glue filling hole 112, so as to ensure the structural stability of the display module 10.

[0072] Further, in order to further ensure the structural stability of the display module 10, referring to Figure 12 and Figure 13 , the communication hole 111 can be arranged in the first back plate 110 corresponding to each panel setting area 201, and the glue filling hole 112 can be arranged in the second back plate 120 corresponding to each panel setting area 201. By arranging the communication hole 111 and the glue filling hole 112 in each area, the filling effect of the glue in each panel setting area 201 can be the same or similar, and the non-uniformity of the glue 300 can be avoided, so as to ensure that the display panel 200 and the back plate 100 in each different panel setting area 201 have good fixing effect, and the structural stability of the display module 10 is ensured.

[0073] Figure 14 is another structural diagram of the first back plate provided by the embodiment of the present application, Figure 15 is another structural diagram of the first back plate provided by the embodiment of the present application, referring to Figure 12 , Figure 14 and Figure 15 , in the panel setting area 201, the first back plate 110 includes at least two communication holes 111; two communication holes 111 are arranged at the positions opposite to the center a of the panel setting area 201; or at least one communication hole 111 is arranged at the center a of the panel setting area 201, and at least one communication hole 111 is arranged at the edge position of the panel setting area 201.

[0074] The first back plate 110 includes at least two communication holes 111, that is, it can ensure that the glue injection and pumping work are realized at different times, and it can also ensure that the glue injection and pumping work are realized at the same time. Further, the number of the communication holes 111 in the first back plate 110 can be increased adaptively, and the number of the communication holes 111 is not limited in the embodiment of the present application. Referring to Figure 12 , Figure 14 and Figure 15 , two communication holes 111 are included in the first back plate 110 corresponding to each panel setting area 201.

[0075] Exemplarily, referring to Figure 12 and Figure 14, two communication holes 111 in the first back plate 110 can be located at the positions of the two sides of the center a of the panel setting area 201, based on whether the two sides are the two sides of the center or the two opposite sides, the embodiment of the application does not make specific limitation. Based on the communication holes 111 arranged at the two sides of the center a, during the glue injection process, the communication hole 111 at one side of the center a can be used for glue injection, and the communication hole at the other side of the center a can be used for air extraction, so that the glue 300 can flow in the space between the first substrate 101 and the second substrate 102 during the glue injection process, the glue 300 can fill the whole flow area, and it is beneficial to ensure that the different areas of the back plate 100 have relatively balanced adhesion to the display panel 200. Further, referring to Figure 15 , at least one communication hole 111 is arranged at the center a of the panel setting area 201, and at least one communication hole 111 is arranged at the edge of the panel setting area 201, no matter whether the communication hole 111 at the center a is used for glue injection or air extraction, whether the communication hole 111 at the edge is used for air extraction or glue injection, based on the dispersed arrangement position, it is beneficial to realize the flow of the glue 300 between the first back plate 110 and the second back plate 120, that is, to ensure that the glue 300 uniformly fills the whole area, and further to ensure the stability of the display module 10.

[0076] Figure 16 is another structure diagram of a first back plate provided by the embodiment of the application, Figure 17 is a control structure diagram of a communication hole provided by the embodiment of the application, referring to Figure 16 and Figure 17 , the communication hole 111 includes an air extraction hole 113 and a glue injection hole 112, the air extraction hole 113 is used at least for air extraction between the first back plate 110 and the second back plate 120, and the glue injection hole 112 is used at least for glue injection between the first back plate 110 and the second back plate 120; the air extraction hole 113 and the glue injection hole 112 are independently arranged; the back plate 100 further includes a first valve 410 and a second valve 420, the first valve 410 is used for controlling the opening state of the air extraction hole 113, and the second valve 420 is used for controlling the opening state of the glue injection hole 112.

[0077] Specifically, the connecting hole 111 includes an air extraction hole 113 and an injection hole 112. The air extraction hole 113 removes air from the space between the first back plate 110 and the second back plate 120, thereby creating a negative pressure to ensure that the display panel 200 adheres to the second back plate 120. The injection hole 112 injects adhesive 300 between the first back plate 110 and the second back plate 120. The adhesive 300 flows into the space between the second back plate 120 and the display panel 200 through the adhesive filling hole 112 on the second back plate 120, thereby ensuring a tight bond between the display panel 200, the second back plate 120, and the first back plate 110, and ensuring the structural stability of the display module 10.

[0078] Furthermore, the opening degree of the connecting hole 111 can be adjusted by setting a valve, thereby adjusting the state and rate of air extraction and glue injection. For details, please refer to... Figure 16 As shown, the control module 400 can control the opening state of the first valve 410 and the second valve 420, including valve open, valve closed, and valve partially open. Since the first valve 410 is connected to the vent 113, the control module 400 adjusts the venting state of the vent 113 by controlling the opening state of the first valve 410. The second valve 420 is connected to the glue injection hole 112, and the control module 400 adjusts the glue injection state of the glue injection hole 112 by controlling the opening state of the second valve 420, thereby improving the stability of the adjustment of the vent 113 and the glue injection hole 112.

[0079] For example, if the current display module 10 only needs to ensure that the display panel 200 is attached to the second backplate 120 by evacuation, the control module 400 controls the first valve 410 to open and the second valve 420 to close. When the first valve 410 is open, the evacuation port 113 is operational; when the second valve 420 is closed, the glue injection port 112 is not operational. Furthermore, as the evacuation port 113 operates, the control module 400 can adjust the opening of the first valve 410. That is, at the beginning of evacuation, the opening of the first valve 410 is adjusted to be larger to ensure that the evacuation port 113 evacuates at a higher rate. As the evacuation operation continues, the opening of the first valve 410 is adjusted to be smaller to avoid wasting evacuation.

[0080] For example, if the current display module 10 needs to be injected with adhesive, the control module 400 controls the second valve 420 to open, that is, the adhesive injection hole 112 begins operation. Furthermore, as the adhesive injection hole 112 operates, the control module 400 can adjust the opening of the second valve 420. Initially, the opening of the second valve 420 is larger to ensure that the adhesive injection hole 112 injects adhesive at a high rate. As the adhesive injection progresses, the area requiring adhesive 300 gradually decreases, and the opening of the second valve 420 is adjusted to decrease to avoid wasting adhesive 300. Furthermore, during the adhesive injection process, the control module 400 can also control the first valve 410 to open, adjusting it to a moderate opening to ensure that the venting hole 113 extracts air, and that the moderate extraction rate facilitates the flow of adhesive 300 without causing waste. The specific control process of the first valve 410 and the second valve 420 by the control module 400 can be adaptively adjusted according to the actual scenario. This embodiment of the invention does not impose specific limitations on this.

[0081] Figure 18 This is a schematic diagram of another first backplate structure provided in an embodiment of the present invention. Figure 19 This is a schematic diagram of another first backplate structure provided in an embodiment of the present invention, for reference. Figure 18 and Figure 19 The connecting hole 111 includes an air extraction hole 113 and an adhesive injection hole 112. The air extraction hole 113 is used at least to extract air from the space between the first back plate 110 and the second back plate 120, and the adhesive injection hole 112 is used at least to inject adhesive into the space between the first back plate 110 and the second back plate 120. The cross-sections of the air extraction hole 113 and the adhesive injection hole 112 are different.

[0082] Specifically, the connecting hole 111 includes an air extraction hole 113 and an adhesive injection hole 112, both located on and penetrating the first back plate 110. In other words, aside from functional differences in practical applications, the air extraction hole 113 and the adhesive injection hole 112 are similarly positioned. Furthermore, to easily distinguish between the air extraction hole 113 and the adhesive injection hole 112, their cross-sections can be different, improving work efficiency in actual production.

[0083] For example, refer to Figure 18 As shown, both the injection hole 112 and the vent hole 113 have circular cross-sectional shapes. The dimensions of these cross-sections can be adjusted to facilitate differentiation between them. For example, the diameter of the injection hole 112 can be L1, and the diameter of the vent hole 113 can be L2, where L1 is larger than L2. (Reference) Figure 19As shown, the cross-sectional shapes of the glue injection hole 112 and the air extraction hole 113 are different, that is, the cross-sectional shape of the glue injection hole 112 can be rectangular, and the cross-sectional shape of the air extraction hole 113 is circular. By adjusting the cross-sectional shape, it is convenient to distinguish the glue injection hole 112 and the air extraction hole 113. It should be noted that the specific cross-sectional implementation of the glue injection hole 112 and the air extraction hole 113 is not limited in this embodiment, and can be adaptively adjusted according to actual conditions.

[0084] Figure 20 is another structural schematic diagram of a second back plate provided by an embodiment of the application, referring to Figure 20 , the second back plate 120 includes a plurality of glue filling holes 121, and the plurality of glue filling holes 121 are uniformly distributed in the second back plate 120.

[0085] Further, the glue filling holes 112 in the second back plate 120 corresponding to each panel setting area 201 are uniformly distributed, which can ensure the stability and balance of the bonding of each display panel 200 in the panel setting area 201, and further ensure the structural stability of the display module 10 as a whole. For example, referring to Figure 20 , the same number of glue filling holes 112 are arranged in the second back plate 120 corresponding to each panel setting area 201, and the distribution density and the number of the glue filling holes 121 are the same under each unit area (referring to Figure 20 , the area P1 and the area P2) of the second back plate 120, which reflects that the plurality of glue filling holes 121 are uniformly distributed in the second back plate 120. Further, referring to Figure 20 , the spacing between any two adjacent glue filling holes 121 in the same direction and the direction perpendicular thereto is L3. By arranging the glue filling holes 112 in each area to have balance, the bonding effect of each display panel 200 is ensured to be consistent, which further ensures the structural stability of the display module 10, and also ensures that the effect of each display panel 200 is balanced, thereby reflecting the display balance of the display module 10.

[0086] Figure 21 is another structural schematic diagram of a second back plate provided by an embodiment of the application, Figure 22 is Figure 21 is a sectional structure schematic diagram along the section line D-D', referring to Figure 20 and Figure 21 , the second back plate 120 includes a curved back plate, and the bending direction of the second back plate 120 is toward the light exit side of the display module 10; the second back plate 120 includes a plurality of glue filling holes 121, and the distribution density of the glue filling holes 121 at the center position of the second back plate 120 is greater than the distribution density of the glue filling holes 121 at the edge corner position of the second back plate 120.

[0087] Specifically, the second back plate 120 can be a curved back plate, that is, as shown in Figure 22 the curved direction of the second back plate 120 is towards the light-emitting side of the display module 10, that is, the edge region of the second back plate 120 is curved away from the first back plate 110, in other words, the distance between the center region of the second back plate 120 and the center region of the first back plate 110 is less than the distance between the edge region of the second back plate 120 and the edge region of the first back plate 110. Based on the curved second back plate 120 described above, the positions of the plurality of colloid filling holes 121 on the second back plate 120 can be adjusted, thereby ensuring that the non-planar second back plate 120 and the display panel 200 on the second back plate 120 can be stably bonded, thereby ensuring the stability of the overall structure of the display module 10.

[0088] Further, referring to Figure 22 , based on the curved shape of the second back plate 120, the display panel 200 needs greater adhesion near the center region of the back plate 100 to ensure stable bonding of the display panel 200 and the second back plate 120. Further, by adjusting the distribution density of the colloid filling holes 121 in the second back plate 120, the bonding effect of each region of the display panel 200 can be ensured, thereby ensuring the structural stability of the display module 10. Specifically, as shown in Figure 21 , the distribution density of the colloid filling holes 121 at the center position of the second back plate 120 is greater than the distribution density of the colloid filling holes 121 at the edge corner position of the second back plate 120. The distribution density can refer to the difference in the number of colloid filling holes 121 of the same size, or can refer to the difference in the cross-sectional area of colloid filling holes 121 of different sizes, which is not specifically limited by the embodiments of the present application. By increasing the distribution density of the colloid filling holes 121 in the center region, a larger area of the colloid 300 in the center region is ensured to be in contact with the display panel 200, thereby ensuring that the display panel 200 needs greater adhesion.

[0089] Figure 23 is another structure diagram of a second back plate provided by the embodiments of the present application, Figure 24 is Figure 23 is a cross-sectional structure diagram along the section line E-E', referring to Figure 23 and Figure 24 , the second back plate 120 includes a curved back plate, and the curved direction of the second back plate 120 is away from the light-emitting side of the display module 10; the second back plate 120 includes a plurality of colloid filling holes 121, and the distribution density of the colloid filling holes 121 at the center position of the second back plate 120 is less than the distribution density of the colloid filling holes 121 at the edge position of the second back plate 120.

[0090] Specifically, the second back plate 120 can be a curved back plate, that is, as shown in Figure 24As shown, the bending direction of the second back plate 120 is away from the light exit side of the display module 10, that is, the edge region of the second back plate 120 bends towards the first back plate 110, in other words, the distance between the center region of the second back plate 120 and the center region of the first back plate 110 is greater than the distance between the edge region of the second back plate 120 and the edge region of the first back plate 110. Based on the curved second back plate 120 described above, the positions of the plurality of colloid filling holes 121 on the second back plate 120 can be adjusted, thereby ensuring that the non-planar second back plate 120 and the display panel 200 on the second back plate 120 can be stably bonded, thereby ensuring the stability of the overall structure of the display module 10.

[0091] Further, referring to Figure 24 , based on the curved shape of the second back plate 120, the edge region of the display panel 200 close to the back plate 100 needs greater adhesion, thereby ensuring the stable bonding of the display panel 200 and the second back plate 120. Further, by adjusting the distribution density of the colloid filling holes 121 in the second back plate 120, the bonding effect of each region of the display panel 200 is ensured, thereby ensuring the structural stability of the display module 10. Specifically, referring to Figure 23 , the distribution density of the colloid filling holes 121 at the center position of the second back plate 120 is less than the distribution density of the colloid filling holes 121 at the edge corner position of the second back plate 120. The distribution density can refer to the difference in the number of colloid filling holes 121 of the same size, or can refer to the difference in the cross-sectional area of the colloid filling holes 121 of different sizes, which is not specifically limited by the embodiments of the present application. By increasing the distribution density of the colloid filling holes 121 in the edge region, the colloid 300 in the edge region is ensured to have a larger area in contact with the display panel 200, thereby ensuring that the display panel 200 needs greater adhesion.

[0092] Figure 25 is another structure schematic view of a second back plate provided by the embodiments of the present application, Figure 26 is Figure 25 is a cross-sectional structure schematic view along the section line F-F', referring to Figure 25 and Figure 26 , the second back plate 120 includes a curved back plate, and the bending direction of the second back plate 120 is towards the light exit side of the display module 10. The center position of the surface away from the first back plate 110 side of the second back plate 120 is provided with a first groove 122, and the first groove 122 is provided with a colloid 300.

[0093] Further, referring to Figure 26Due to the curved shape of the second backplate 120, the display panel 200 requires greater adhesion near the center of the backplate 100 to ensure stable bonding between the display panel 200 and the second backplate 120. Therefore, by providing a first groove 122 in the second backplate 120, and by positioning the first groove 122 around the center of the second backplate 120, the presence of adhesive 300 in the first groove 122 further enhances the adhesion between the display panel 200 and the second backplate 120 in the center region, thereby ensuring the overall structural stability of the display module 10. In other words, by increasing the contact area between the adhesive 300 in the center region of the second backplate 120 and the display panel 200, the greater adhesion required by the display panel 200 is ensured.

[0094] Figure 27 This is a schematic diagram of another second backplate provided in an embodiment of the present invention, for reference. Figure 27 As shown, the second back plate 120 includes a curved back plate, and the bending direction of the second back plate 120 is away from the light-emitting side of the display module 10; a second groove 123 is provided at the edge position of the surface of the second back plate 120 away from the first back plate 110, and a colloid 300 is provided in the second groove 123.

[0095] Further reference Figure 27 Based on the curved shape of the second backplate 120, the edge area of ​​the display panel 200 near the backplate 100 requires greater adhesion to ensure stable bonding between the display panel 200 and the second backplate 120. Furthermore, by providing a second groove 123 in the second backplate 120, the bonding effect of each area of ​​the display panel 200 is ensured, thereby guaranteeing the structural stability of the display module 10. Specifically, refer to... Figure 27 As shown, the second groove 123 is located at the edge of the second back plate 120. The adhesive 300 also remains in the second groove 123, thereby enhancing the adhesion between the display panel 200 and the second back plate 120 in the edge region, thus ensuring the overall structural stability of the display module 10. In other words, by increasing the contact area between the adhesive 300 and the display panel 200 in the edge region of the second back plate 120, the greater adhesion required by the display panel 200 is ensured.

[0096] Figure 28 yes Figure 1 Another cross-sectional structural diagram along section line A-A', see reference. Figure 28 The display module 10 also includes an adhesive 510 and a protective cover 520 located on the side of the display panel 200 opposite to the back plate 100.

[0097] For details, please refer to Figure 28The display panel 200 further includes a protection structure on the side away from the back plate 100, that is, the display module 10 further includes a protection cover plate 520 and an adhesive 510 between the protection cover plate 520 and the display panel 200. For example, the protection cover plate 520 can be a glass cover plate, and the embodiments of the present application do not limit the specific material of the protection structure. By further adding the adhesive 510 and the protection cover plate 520 on the display panel 200, the structural stability of the display module 10 can be further ensured.

[0098] Based on the same inventive concept, the embodiments of the present application also provide a preparation method of a display device, Figure 29 is a flowchart of a display module preparation method provided by the embodiments of the present application, as shown in Figure 29 The preparation method comprises the following steps:

[0099] S110, providing a back plate, the back plate comprising a first back plate and a second back plate arranged oppositely; the first back plate comprising a communication hole penetrating through the first back plate; the second back plate comprising a glue filling hole penetrating through the second back plate.

[0100] Further, the display module comprises a back plate, the back plate comprising a first back plate and a second back plate, and the display panel is arranged on the side of the second back plate away from the first back plate. That is, the back plate serves as a support structure of the display panel, providing a space for the combination of multiple display panels, thereby ensuring that the display module can realize large-area display effect of multiple display panels spliced together.

[0101] Specifically, the first back plate comprises a communication hole penetrating through the first back plate. Through the communication hole, the space between the first back plate and the second back plate can be formed into a negative pressure by air extraction, so as to facilitate the stable adsorption of the display panel on the second back plate. At the same time, the subsequent filling of the glue is also injected between the first back plate and the second back plate through the communication hole. Further, the second back plate comprises a glue filling hole penetrating through the second back plate.

[0102] S120, placing at least two display panels on the side of the second back plate away from the first back plate, and extracting air from the back plate through at least part of the communication holes at a first air extraction rate, so as to fix the display panel on the surface of the back plate.

[0103] The display module comprises a display panel, the display panel having a display function, thereby realizing the display effect of the display module. For example, the display panel can be a liquid crystal display panel or an organic light-emitting display panel, and the embodiments of the present application do not limit the specific type of the display panel. Further, the display module comprises at least two display panels, that is, multiple display panels can be combined and spliced, thereby realizing large-size display effect of the display module and ensuring better display effect of the display module as a whole.

[0104] Specifically, for the communication hole in the first back plate, it has the functions of pumping and injecting glue. Specifically, for pumping, after the first back plate, the second back plate and the display panel are placed in the designed relative position, the communication hole is pumped at a first pumping rate, and then the space between the first back plate and the second back plate is pumped away, and then a negative pressure is formed between the first back plate and the second back plate relative to other positions, and then the display panel is better adhered to the second back plate, and the display panel is stably fixed at the position of the second back plate during the later injection of glue.

[0105] S130, injecting glue into the back plate through at least part of the communication hole to fill the glue between the first back plate and the second back plate and the glue filling hole, and the display panel is bonded to the back plate through the glue in the glue filling hole.

[0106] Among them, the glue is arranged between the first back plate and the second back plate, and the glue is used to fix the back plate and the display panel, and then the structural stability of the display module is ensured.

[0107] Further, for the injection process through the communication hole, the glue is injected between the first back plate and the second back plate through the communication hole, the first back plate and the second back plate are bonded, and then the fixed connection of the first back plate and the second back plate is ensured. At the same time, the second back plate includes a glue filling hole, and the glue injected through the communication hole will also flow into the second back plate and the display panel through the glue filling hole, and then the fixed connection effect between the second back plate and the display panel is ensured. Overall, through the glue injection and pumping of the communication hole, the stable connection of the structure between the first back plate, the second back plate and the display panel is ensured, and then the structural stability of the display module is ensured.

[0108] Specifically, the glue filling hole is filled with glue, that is, the glue flows into the second back plate and the display panel through the glue filling hole, and the display panel and the second back plate are fixedly contacted. Illustratively, the communication hole of the first back plate realizes pumping and injection of glue, the glue flows through the glue filling hole of the second back plate, the display panel is bonded to the back plate through the glue in the glue filling hole, the stability of the overall structure of the display module is ensured, and then a plurality of display panels can be fixedly arranged in the display module to realize large-size display effect.

[0109] In summary, in the preparation method provided by the embodiment of the present application, the communication hole in the first back plate ensures that the display panel is placed stably, the glue filling hole in the second back plate facilitates the fixation of the display panel by the glue, and then the stability of the structure of the display module is ensured, and then the overall display effect of the display module is ensured.

[0110] Figure 30 is a flow chart of another display module preparation method provided by the embodiment of the present application, referring to Figure 30The preparation method of the display module further comprises:

[0111] S210, providing a back plate, the back plate comprising a first back plate and a second back plate arranged oppositely; the first back plate comprising a communication hole penetrating through the first back plate; and the second back plate comprising a glue filling hole penetrating through the second back plate.

[0112] S220, placing a first display panel in the first panel setting area and on the side of the second back plate facing away from the first back plate.

[0113] S230, performing suction on at least the first panel setting area through at least part of the communication holes in the first panel setting area at a first suction rate, so as to fix the first display panel on the surface of the back plate in the first panel setting area.

[0114] S240, placing a second display panel in the second panel setting area and on the side of the second back plate facing away from the first back plate.

[0115] S250, performing suction on at least the second panel setting area through at least part of the communication holes in the second panel setting area at the first suction rate, so as to fix the second display panel on the surface of the back plate in the second panel setting area.

[0116] For example, the display module comprises two display panels, and the panel setting areas corresponding to different display panels are the first panel setting area and the second panel setting area. Specifically, one display panel is placed in the first panel setting area, that is, the display panel is in contact with the corresponding second back plate, and suction is performed through the corresponding communication hole at the first suction rate, so as to ensure that the display panel is fixed and adsorbed in the first panel setting area. Similarly, another display panel is placed in the second panel setting area, that is, the display panel is in contact with the corresponding second back plate, and suction is performed through the corresponding communication hole at the first suction rate, so as to ensure that the display panel is fixed and adsorbed in the second panel setting area. That is, the communication holes in different panel setting areas can perform suction on the communication holes corresponding to different panel setting areas at different times, that is, different display panels can be independently placed and independently adsorbed to the second back plate, so as to ensure independent control of different display panels when the display module comprises multiple display panels, improve the overall control accuracy of the display module, ensure the adhesion of each display panel in the display module, and further ensure better display effect of the display module as a whole.

[0117] S260, filling glue in the back plate through at least part of the communication holes, so as to fill glue between the first back plate and the second back plate and in the glue filling hole, and the display panel is bonded to the back plate through the glue in the glue filling hole.

[0118] In summary, the embodiments of the present application can independently control different display panels, so as to ensure better display effect of the display module as a whole.

[0119] Figure 31 is another flowchart of a display module preparation method provided by an embodiment of the present application, referring to Figure 31 The display module preparation method further includes:

[0120] S310, providing a back plate, the back plate including oppositely arranged first and second back plates; the first back plate including a communication hole penetrating through the first back plate; and the second back plate including a gel filling hole penetrating through the second back plate.

[0121] S320, placing a first display panel in the first panel setting area and on the side of the second back plate facing away from the first back plate.

[0122] S330, performing suction on at least the first panel setting area through at least part of the communication holes in the first panel setting area at a first suction rate, so as to fix the first display panel on the surface of the back plate in the first panel setting area.

[0123] S340, placing a second display panel in the second panel setting area and on the side of the second back plate facing away from the first back plate.

[0124] S350, performing suction on at least the second panel setting area through at least part of the communication holes in the second panel setting area at the first suction rate, so as to fix the second display panel on the surface of the back plate in the second panel setting area.

[0125] S360, reducing the suction rate of the suction communication holes in the first panel setting area and adjusting the setting position of the first display panel, and / or reducing the suction rate of the suction communication holes in the second panel setting area and adjusting the setting position of the second display panel, so as to adjust the splicing effect of the first and second display panels.

[0126] Further, for the suction process of the communication holes, the suction can be performed at a larger suction rate at the beginning to ensure the adsorption effect of each display panel. And as the suction process proceeds, the air volume between the first and second back plates gradually decreases, and the suction rate of the communication holes can be reduced, thereby avoiding suction waste. If the suction is performed at a larger suction rate all the time during the gel injection process, the gel may be sucked, thereby affecting the effect of the gel injection.

[0127] Further, when the first display panel and the second display panel are attached to the surface of the second back plate based on the effect of the pressure, at this time, the air extraction rate of the air extraction communication hole in the first panel setting area can be reduced and the setting position of the first display panel is adjusted and / or the air extraction rate of the air extraction communication hole in the second panel setting area is reduced and the setting position of the second display panel is adjusted, so that the splicing effect of the first display panel and the second display panel can be adjusted by adjusting the position of the first display panel and / or the position of the second display panel, for example, the splicing gap between the first display panel and the second display panel is reduced, the large splicing gap between the first display panel and the second display panel is avoided, the splicing effect between different display panels is good, and the good display effect of the display module is further ensured.

[0128] S370, glue is injected into the back plate through at least part of the communication holes to fill the glue between the first back plate and the second back plate and in the glue filling hole, and the display panel is bonded to the back plate through the glue in the glue filling hole

[0129] In summary, by adjusting the air extraction rate of the communication hole, that is, air extraction at the first air extraction rate ensures that the display panel is initially fixed in the panel setting area, and by reducing the air extraction rate, the relative position of the display panel can be further adjusted. Overall, the accurate control of the position of the display panel can be further ensured.

[0130] Figure 32 is a flowchart of another display module preparation method provided by the embodiment of the application, referring to Figure 32 The preparation method of the display module further comprises:

[0131] S410, a back plate is provided, the back plate comprises a first back plate and a second back plate arranged oppositely; the first back plate comprises a communication hole penetrating through the first back plate; and the second back plate comprises a glue filling hole penetrating through the second back plate.

[0132] S420, at least two display panels are placed on the side of the second back plate away from the first back plate, and the back plate is air extracted at a first air extraction rate through at least part of the communication holes to fix the display panel on the surface of the back plate.

[0133] S430, the back plate is air extracted at a second air extraction rate through part of the communication holes while glue is injected into the back plate through the rest of the communication holes; the second air extraction rate is less than or equal to the first air extraction rate.

[0134] The partial communication holes can be first pumped at a first pumping rate to ensure the display panel to be fixed at a rough position by forming a negative pressure, and then the glue is injected to ensure the fixing effect of the display panel and the back plate as a whole. Further, when the glue is injected through the partial communication holes, the other communication holes can be pumped at a second pumping rate, which can ensure the glue injected through the other communication holes to flow by pumping, and ensure the uniform dispersion of the glue. The functions realized by the first pumping and the second pumping are different, that is, the second pumping rate is less than or equal to the first pumping rate, which further ensures the overall fixing effect and the structural stability of the display module.

[0135] In summary, by efficient use of the communication holes, the preparation time and cost of the display module are reduced, and the structural stability and display effect of the display module can also be ensured.

[0136] Figure 33 is a flow chart of another display module preparation method provided by the embodiment of the application, referring to Figure 33 The display module preparation method further comprises:

[0137] S510, providing a back plate, the back plate comprising a first back plate and a second back plate arranged oppositely; the first back plate comprising a communication hole penetrating the first back plate; the second back plate comprising a glue filling hole penetrating the second back plate.

[0138] S520, positioning the setting position of the pumping hole according to the cross section of the pumping hole, and pumping the back plate through the pumping hole at a first pumping rate by using a pumping device.

[0139] S530, positioning the setting position of the glue injection hole according to the cross section of the glue injection hole, and injecting the back plate through the glue injection hole by using a glue injection device.

[0140] Specifically, the communication hole comprises a pumping hole and a glue injection hole, that is, the pumping hole and the glue injection hole are both located on the first back plate and penetrate the first back plate. In other words, in addition to the difference in the functions in actual application, the positions of the pumping hole and the glue injection hole are similar. Further, in order to distinguish the pumping hole and the glue injection hole, the cross sections of the pumping hole and the glue injection hole can be different, which facilitates improving the working effect in actual production.

[0141] Exemplarily, the cross-sectional shapes of the glue injection hole and the air extraction hole are both circular. By adjusting the size of the cross-sectional image, the glue injection hole and the air extraction hole can be distinguished, i.e., the cross-sectional diameter of the glue injection hole is L1, and the cross-sectional diameter of the air extraction hole is L2, L1 is greater than L2. The cross-sectional shapes of the glue injection hole and the air extraction hole are different, i.e., the cross-sectional shape of the glue injection hole can be rectangular, and the cross-sectional shape of the air extraction hole is circular. By adjusting the shape of the cross-sectional image, the glue injection hole and the air extraction hole can be distinguished. In the case of distinguishing the air extraction hole and the glue injection hole, the air extraction device is used to extract air from the back plate through the air extraction hole at a first air extraction rate, and the glue injection device is used to inject glue into the back plate through the glue injection hole. It should be noted that the present embodiment does not limit the size relationship of the specific cross-sectional area of the glue injection hole and the air extraction hole, and the specific cross-sectional area of the glue injection hole and the air extraction hole can be adjusted adaptively according to the actual situation.

[0142] Optionally, after the glue injection device is used to inject glue into the back plate through the glue injection hole, an adhesive and a protective cover plate can be prepared on the side of the display panel away from the back plate.

[0143] Specifically, the display panel away from the back plate further includes a protective structure, i.e., a protective cover plate and an adhesive between the protective cover plate and the display panel. Exemplarily, the protective cover plate can be a glass cover plate, and the present embodiment does not limit the specific material of the protective structure. By further adding an adhesive and a protective cover plate on the display panel, the structural stability of the display module can be further ensured.

[0144] In summary, by distinguishing the glue injection hole and the air extraction hole in the cross-sectional area, the glue injection hole and the air extraction hole can be distinguished in the actual process, and different devices, i.e., the air extraction device and the glue injection device, are used to work, thereby improving the work efficiency.

[0145] Based on the same inventive concept, the present embodiment also provides a display device, Figure 34 is a structural schematic diagram of a display device provided by the present embodiment, and Figure 34 The display device 1 includes the display module 10 described in any of the above embodiments, and therefore, the display device 1 provided by the present embodiment has the corresponding beneficial effects in the above embodiments, which will not be described here. Exemplarily, the display device 1 can be a mobile phone, a computer, a smart wearable device (for example, a smart watch), a vehicle-mounted display device, and other electronic devices, which are not limited by the present embodiment.

[0146] Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications and substitutions can be made without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A display module, characterized in that, Includes a back panel and at least two display panels disposed on one side of the back panel: The backplate includes a first backplate and a second backplate disposed opposite to each other, and an colloid located between the first backplate and the second backplate; the first backplate includes a connecting hole that penetrates through the first backplate; the second backplate includes an colloid filling hole that penetrates through the second backplate, and the colloid fills the colloid filling hole; The display panel is located on the side of the second back plate away from the first back plate. Along the thickness direction of the display module, the display panel overlaps with the colloid filling hole, and the display panel is bonded to the back plate through the colloid in the colloid filling hole. The connecting hole is used to extract air and inject adhesive into the space between the first back plate and the second back plate in a time-sharing manner. Alternatively, some of the connecting holes are used to evacuate and inject adhesive into the space between the first backplate and the second backplate in a time-sharing manner, while the remaining connecting holes are used to inject adhesive into the space between the first backplate and the second backplate. Alternatively, some of the connecting holes are used for time-sharing air extraction and glue injection into the space between the first backplate and the second backplate, while the remaining connecting holes are used for air extraction into the space between the first backplate and the second backplate.

2. The display module according to claim 1, characterized in that, The back panel includes at least two panel mounting areas, and the display panel is disposed in the panel mounting areas; There are two panel mounting areas, and the number of connecting holes in the panel mounting area closer to the edge of the back panel is greater than the number of connecting holes in the panel mounting area closer to the center of the back panel.

3. The display module according to claim 1, characterized in that, The back panel includes at least two panel mounting areas, and the display panel is disposed in the panel mounting areas; The connecting hole includes an injection hole, which is used at least for injecting adhesive into the space between the first back plate and the second back plate; There are two panel mounting areas, and the number of glue injection holes in the panel mounting area near the edge of the back panel is less than the number of glue injection holes in the panel mounting area near the center of the back panel.

4. The display module according to claim 1, characterized in that, The back panel includes at least two panel mounting areas, and the display panel is disposed in the panel mounting areas; Each of the first back plates in the panel setting area includes the communicating hole, and each of the second back plates in the panel setting area includes the colloid filling hole.

5. The display module according to claim 4, characterized in that, In the panel mounting area, the first back plate includes at least two of the aforementioned connecting holes; Two connecting holes are located on opposite sides of the center of the panel setting area; Alternatively, at least one of the connecting holes is located at the center of the panel setting area, and at least one of the connecting holes is located at the edge of the panel setting area.

6. The display module according to claim 1, characterized in that, The connecting hole includes an air extraction hole and an adhesive injection hole. The air extraction hole is used at least to extract air from the space between the first back plate and the second back plate, and the adhesive injection hole is used at least to inject adhesive into the space between the first back plate and the second back plate. The air extraction hole and the glue injection hole are provided independently; The backplate also includes a first valve and a second valve. The first valve is used to control the opening state of the air extraction hole, and the second valve is used to control the opening state of the glue injection hole.

7. The display module according to claim 1, characterized in that, The connecting hole includes an air extraction hole and an adhesive injection hole. The air extraction hole is used at least to extract air from the space between the first back plate and the second back plate, and the adhesive injection hole is used at least to inject adhesive into the space between the first back plate and the second back plate. The cross-sections of the air extraction hole and the glue injection hole are different.

8. The display module according to claim 1, wherein the second back plate includes a plurality of the colloid filling holes, and the plurality of colloid filling holes are evenly distributed in the second back plate.

9. The display module according to claim 1, characterized in that, The second back plate includes a curved back plate, and the curvature of the second back plate is toward the light-emitting side of the display module; The second back plate includes a plurality of the said colloidal filling holes, and the distribution density of the colloidal filling holes at the center of the second back plate is greater than the distribution density of the colloidal filling holes at the edge corners of the second back plate.

10. The display module according to claim 1, characterized in that, The second back plate includes a curved back plate, and the curvature direction of the second back plate is opposite to the light-emitting side of the display module; The second back plate includes a plurality of the said colloidal filling holes, and the distribution density of the colloidal filling holes at the center of the second back plate is less than the distribution density of the colloidal filling holes at the edge of the second back plate.

11. The display module according to claim 1, characterized in that, The second back plate includes a curved back plate, and the curvature of the second back plate is toward the light-emitting side of the display module; The second back plate has a first groove at the center of the side surface opposite to the first back plate, and the colloid is disposed in the first groove.

12. The display module according to claim 1, characterized in that, The second back plate includes a curved back plate, and the curvature direction of the second back plate is opposite to the light-emitting side of the display module; The second back plate has a second groove at the edge of the side surface opposite to the first back plate, and the colloid is disposed in the second groove.

13. A method for manufacturing a display module, used to manufacture the display module according to any one of claims 1-12, characterized in that, include: A backplate is provided, the backplate comprising a first backplate and a second backplate disposed opposite to each other; the first backplate includes a through hole extending through the first backplate. The second back plate includes a colloid-filled hole that penetrates the second back plate; At least two display panels are placed on the side of the second back plate away from the first back plate, and the back plate is evacuated at a first evacuation rate through at least part of the connecting holes so that the display panels are fixed on the surface of the back plate. The back panel is injected with adhesive through at least part of the connecting holes to fill the space between the first back panel and the second back panel and in the adhesive filling holes, and the display panel is bonded to the back panel through the adhesive in the adhesive filling holes.

14. The preparation method according to claim 13, characterized in that, The back panel includes at least a first panel setting area and a second panel setting area, and the first back panel in each panel setting area includes the communicating hole. The at least two display panels include a first display panel and a second display panel; At least two display panels are placed on the side of the second back plate opposite to the first back plate. Air is pumped from the back plate at a first pumping rate through at least a portion of the connecting holes to fix the display panels to the surface of the back plate, including: The first display panel is placed within the first panel setting area and on the side of the second back panel opposite to the first back panel; At least the first panel setting area is evacuated at a first evacuation rate through at least a portion of the connecting holes in the first panel setting area, so that the first display panel is fixed to the back plate surface in the first panel setting area. The second display panel is placed within the second panel setting area and on the side of the second back panel opposite to the first back panel; At least a portion of the connecting holes in the second panel setting area are evacuated at a first evacuation rate to fix the second display panel to the back panel surface in the second panel setting area.

15. The preparation method according to claim 14, characterized in that, Before applying adhesive to the backplate through at least a portion of the connecting holes, the method further includes: Reduce the air extraction rate of the connecting hole in the first panel setting area and adjust the setting position of the first display panel, and / or reduce the air extraction rate of the connecting hole in the second panel setting area and adjust the setting position of the second display panel, so as to adjust the splicing effect of the first display panel and the second display panel.

16. The preparation method according to claim 15, characterized in that, Applying adhesive to the backplate through at least a portion of the connecting holes includes: While the backplate is being evacuated at a second evacuation rate through a portion of the connecting holes, adhesive is being injected into the backplate through the remaining portion of the connecting holes; the second evacuation rate is less than or equal to the first evacuation rate.

17. The preparation method according to claim 15, characterized in that, The connecting hole includes an air extraction hole and an adhesive injection hole, and the cross-sections of the air extraction hole and the adhesive injection hole are different; Evacuation of the backplate at a first evacuation rate through at least a portion of the connecting holes includes: The location of the air extraction hole is determined according to its cross-section, and an air extraction device is used to extract air from the back plate through the air extraction hole at a first air extraction rate. Applying adhesive to the backplate through at least a portion of the connecting holes includes: The location of the injection hole is determined according to its cross-section, and an injection device is used to inject adhesive into the back panel through the injection hole.

18. A display device, characterized in that, Includes the display module as described in any one of claims 1-12.

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