Jointed display panel and jointed display device

Abstract

To provide a joint display panel and a joint display device which remove joints of a joint display panel.SOLUTION: The joint display panel includes: at least two first display modules joining to each other; and at least one second display module. There is a gap between two of the first display modules next to each other. A storage trench is formed in a part which corresponds to edge regions of the first display modules. The storage trench of one first display module is joined to the storage module of another first display module so that a storage cavity is formed. At least one second display module is provided in the storage cavity and blocks the gap.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] This application relates to the field of displays, and more particularly to bonded display panels and bonded display devices. [Background technology]

[0002] Conventional display panels require a large amount of metal wiring in the frame area, and liquid crystal displays typically use a sealant to seal the liquid crystal structure, resulting in a noticeable black border due to the black matrix and sealing area located at the edge of the display panel.

[0003] With the rapid development of the outdoor display market, large size and high resolution have become the trend of outdoor display development. Traditional bonded display panels are usually made by bonding multiple display panels together. However, traditional bonded display panels cannot eliminate the seams, which affects the visual experience. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application provide a jointed display panel and a jointed display device that eliminates the seams of the jointed display panel. [Means for solving the problem]

[0005] According to an embodiment of the present application, A joint display panel including at least two first display modules and at least one second display module joined together, A gap exists between two adjacent first display modules that are joined together, the first display module includes a display area and a frame area provided outside the display area, and an opening is located on a side of the frame area that is close to the gap, and an accommodating groove is formed in the portion corresponding to the frame area, the accommodating groove communicating with the gap; The receiving groove of one of the two adjacent first display modules is joined to the receiving groove of the other first display module to form a receiving cavity; The second display module is disposed within the receiving cavity, and a bonded display panel is provided to shield the gap.

[0006] In another embodiment of the present application, the first display module may include opposing first and second substrates, the first substrate having a first recess located on the side closest to the second substrate, and the second substrate having a second recess located on the side closest to the first substrate, and the accommodating groove may be formed by being surrounded by the first recess and the second recess.

[0007] In another embodiment of the present application, the second display module may include a drive substrate that is provided within the first recess and shields the gap, and an LED chip that is provided on the drive substrate so as to be located on a surface away from the first recess.

[0008] In another embodiment of the present application, the drive board may be a printed circuit based drive board.

[0009] In another embodiment of the present application, the first substrate may include a base portion in which the first recess is provided, and a thin film transistor structure layer provided on the base portion.

[0010] In another embodiment of the present application, the second substrate may include a base in which the second recess is provided, a black matrix provided on a surface of the base adjacent to the first substrate so as to be positioned in the display area, and a plurality of color resist blocks provided between the black matrix.

[0011] In another embodiment of the present application, the display device may further include a liquid crystal layer disposed between the first substrate and the second substrate and positioned in the display area.

[0012] In another embodiment of the present application, the second display module may include a driving substrate disposed within the first recess and shielding the gap, and an OLED light-emitting functional layer disposed on a side of the driving substrate away from the bottom surface of the first recess.

[0013] In another embodiment of the present application, the distance from the bottom of the first recess to the bottom of the second recess may be equal to the thickness of the second display module.

[0014] In another embodiment of the present application, the width of the receiving cavity may be equal to the width of the second display module.

[0015] In another embodiment of the present application, the distance between two adjacent pixels of the first display module may be equal to the distance between two adjacent pixels of the second display module.

[0016] Furthermore, according to the embodiment of the present application, A joint display panel including at least two jointly-mounted first display modules and at least one jointly-mounted second display module, wherein a gap exists between two adjacent jointly-mounted first display modules; the first display module includes a display area and a frame area outside the display area, and an opening is located on a side of the frame area that is close to the gap, and an accommodating groove is formed in the portion corresponding to the frame area, the accommodating groove being in communication with the gap, and the accommodating groove of one of the two adjacent first display modules is joined with the accommodating groove of the other first display module to form an accommodating cavity; The second display module includes a bonded display panel disposed in the receiving cavity and covering the gap; A composite display device is further provided, comprising: a backlight module for providing backlight for the first display module.

[0017] In another embodiment of the present application, the first display module may include opposing first and second substrates, the first substrate having a first recess located on the side closest to the second substrate, and the second substrate having a second recess located on the side closest to the first substrate, and the accommodating groove may be formed by being surrounded by the first recess and the second recess.

[0018] In another embodiment of the present application, the second display module may include a drive substrate that is provided within the first recess and shields the gap, and an LED chip that is provided on the drive substrate so as to be located on a surface away from the first recess.

[0019] In another embodiment of the present application, the drive board may be a printed circuit based drive board.

[0020] In another embodiment of the present application, the first substrate may include a base portion in which the first recess is provided, and a thin film transistor structure layer provided on the base portion.

[0021] In another embodiment of the present application, the second substrate may include a base in which the second recess is provided, a black matrix provided on a surface of the base adjacent to the first substrate so as to be positioned in the display area, and a plurality of color resist blocks provided between the black matrix.

[0022] In another embodiment of the present application, the bonded display panel may further include a liquid crystal layer disposed between the first substrate and the second substrate and positioned in the display area.

[0023] In another embodiment of the present application, the second display module may include a driving substrate disposed within the first recess and shielding the gap, and an OLED light-emitting functional layer disposed on a side of the driving substrate away from the bottom surface of the first recess.

[0024] In another embodiment of the present application, the distance between two adjacent pixels of the first display module may be equal to the distance between two adjacent pixels of the second display module. [Effects of the Invention]

[0025] In a bonded display panel and a bonded display device according to an embodiment of the present application, the bonded display panel includes at least two bonded first display modules and at least one bonded second display module. A gap exists between the two bonded adjacent first display modules. The first display module includes a display area and a frame area outside the display area. An accommodating groove is formed in a portion of the first display module corresponding to the frame area. An opening of the accommodating groove is located on the side of the frame area closest to the gap and communicates with the gap. The two accommodating grooves are bonded to form an accommodating cavity. At least one second display module is provided in the accommodating cavity and covers the gap.

[0026] According to an embodiment of the present application, an accommodating groove is formed in a portion corresponding to the frame region of a first display module, and the accommodating groove is joined with the accommodating groove of an adjacent first display module to form an accommodating cavity, and a second display module is installed in the accommodating cavity while shielding the gap, thereby realizing a seamless joining of the joined display panel, increasing the screen utilization rate of the joined display panel, and improving display quality. Furthermore, according to an embodiment of the present application, the opening of the accommodating groove is located on the side closest to the gap, so there is no step between the first display module and the second display module, ensuring the flatness of the light-emitting surface of the joined display panel and effectively improving the flatness of the light-emitting surface, thereby solving the technical issues of users not being able to see the side of the second display module when viewed from the side and the presence of blurring at the seam when viewed from the side, and significantly improving the display experience. [Brief explanation of the drawings]

[0027] In order to more clearly explain the technical means of the embodiments of the present application, the drawings necessary for explaining the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

[0028] [Figure 1] 1 is a first schematic diagram of a joined display panel according to an embodiment of the present invention; [Figure 2] 1 is a schematic diagram illustrating the configuration of a first display module of the present application. [Figure 3] FIG. 2 is a schematic diagram illustrating a second display module according to an embodiment of the present invention. [Figure 4] FIG. 2 is a second schematic diagram of the joined display panel according to the embodiment of the present application. [Figure 5] FIG. 3 is a third schematic diagram of the joined display panel according to the embodiment of the present application. [Figure 6] FIG. 4 is a fourth schematic diagram of the joined display panel according to the embodiment of the present application. [Figure 7] 1 is a schematic diagram illustrating a configuration of a joint display device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0029] In order to make the objectives, technical means, and advantages of the present application clearer, the present application will be described in more detail below with reference to the drawings. As shown in the drawings, the same component numbers represent the same components, and the following description is based on the specific embodiment of the present application shown, and should not be considered as limiting other specific embodiments not detailed in the present application. As used in this specification, the term "embodiment" means an example, instance, or illustration.

[0030] In the description of this application, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are based on the orientations or positional relationships shown in the drawings and are intended merely to facilitate and simplify the description of this application. They do not indicate or suggest that the depicted devices or components must have a specific orientation, be configured and operate in a specific orientation, and should not be understood as limiting this application. Furthermore, the terms "first" and "second" are intended merely for explanatory purposes and should not be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Accordingly, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the aforementioned features. In the description of this application, unless otherwise clearly and specifically limited, "plurality" means two or more.

[0031] According to the embodiments of the present application, a junction display panel and a junction display device are provided. The following will describe each in detail. Note that the order of description of the following embodiments does not limit the priority of the embodiments.

[0032] According to an embodiment of the present application, there is provided a bonded display panel including at least two bonded first display modules and at least one bonded second display module. A gap exists between the two bonded adjacent first display modules. The first display module includes a display area and a frame area outside the display area. An accommodating groove is formed in a portion of the first display module corresponding to the frame area. An opening of the accommodating groove is located on a side of the frame area that is close to the gap and communicates with the gap. The two accommodating grooves are bonded to form an accommodating cavity. At least one second display module is provided in the accommodating cavity and covers the gap.

[0033] According to an embodiment of the present application, an accommodating groove is formed in a portion corresponding to the frame region of a first display module, and the accommodating groove is joined with the accommodating groove of an adjacent first display module to form an accommodating cavity, and a second display module is installed in the accommodating cavity while shielding the gap, thereby realizing a seamless joining of the joined display panel, increasing the screen utilization rate of the joined display panel, and improving display quality. Furthermore, according to an embodiment of the present application, the opening of the accommodating groove is located on the side closest to the gap, so there is no step between the first display module and the second display module, ensuring the flatness of the light-emitting surface of the joined display panel and effectively improving the flatness of the light-emitting surface, thereby solving the technical issues of users not being able to see the side of the second display module when viewed from the side and the presence of blurring at the seam when viewed from the side, and significantly improving the display experience.

[0034] Hereinafter, the driving substrate according to the present invention will be described in detail with reference to specific examples.

[0035] FIG. 1 is a first schematic diagram of a bonded display panel according to an embodiment of the present application. FIG. 2 is a schematic diagram of a first display module according to the present application. FIG. 3 is a schematic diagram of a second display module according to the embodiment of the present application. According to the embodiment of the present application, a bonded display panel 1000 is provided. The bonded display panel 1000 includes at least two bonded first display modules 100 and at least one bonded second display module 200. A gap S exists between the two adjacent bonded first display modules 100. The first display module 100 includes a display area AA and a frame area NA outside the display area AA. A receiving groove 40a is formed in a portion of the first display module 100 corresponding to the frame area NA. An opening of the receiving groove 40a is located on the side of the frame area NA close to the gap S and communicates with the gap S. The accommodating groove 40a of one of the two adjacent first display modules 100 joins with the accommodating groove 40a of the other first display module 100 to form an accommodating cavity 40. At least one second display module 200 is disposed in the accommodating cavity 40 and covers the gap S.

[0036] According to the embodiment of the present application, an accommodating groove 40a is formed in a portion of the first display module 100 corresponding to the frame area NA, and this accommodating groove 40a is joined to the accommodating groove 40a of the adjacent first display module 100 to form an accommodating cavity 40. The second display module 200 is disposed in the accommodating cavity 40 and covers the gap S, thereby realizing a seamless joining of the joined display panel 1000, increasing the screen utilization rate of the joined display panel 1000, and improving display quality. Furthermore, according to the embodiment of the present application, the opening of the accommodating groove 40a is located on the side closest to the gap S, so there is no step between the first display module 100 and the second display module 200, ensuring the flatness of the light-emitting surface of the joined display panel 1000 and effectively improving the flatness of the light-emitting surface. This solves the technical issues of the user not being able to see the side of the second display module 200 when viewed from the side and the presence of blurring at the seam when viewed from the side, thereby significantly improving display quality.

[0037] In addition, in the embodiment of the present application, the first display module 100 may be one of a liquid crystal display (LCD) module and an organic light-emitting diode (OLED) display module, and the embodiment of the present application will be described using an example in which the first display module is a liquid crystal display module, but is not limited thereto.

[0038] It should be understood that in the embodiment of the present application, the frame area NA of one first display module 100 joins with the frame area NA of an adjacent first display module 100 to form a seam PA.

[0039] As shown in FIG. 2, the first display module 100 includes a first substrate 10 and a second substrate 20 facing each other. The first substrate 10 has a first recess 10a. The first recess 10a is located on the side of the first substrate 10 closest to the second substrate 20. The second substrate 20 has a second recess 20a, which is located on the side of the second substrate 20 closest to the first substrate 10. A receiving groove 40a is formed by being surrounded by the first recess 10a and the second recess 20a.

[0040] The first substrate 10 includes a base portion 101 and a thin film transistor structure layer 102 provided on the base portion 101. The first recess 10a is provided in the base portion 101.

[0041] In another embodiment, the base 101 may be a glass base having a thickness of 0.5 mm or more. For example, the thickness of the base 101 may be any one of 0.5 mm, 0.7 mm, 0.9 mm, and 1 mm. Since the thickness of the base 101 according to the embodiment of the present application is 0.5 mm or more, it is possible to avoid the risk of damaging the base 101 when performing a thinning process on the base 101 corresponding to the frame area NA.

[0042] It should be understood that the thin film transistor structure layer according to the embodiment of the present application is a thin film transistor according to known technology, and may include any one of a bottom gate thin film transistor, a top gate thin film transistor, and a dual gate thin film transistor, and therefore the description thereof will be omitted here.

[0043] The second substrate 20 includes a base 201 and a color filter layer 202 disposed on the side of the base 201 closest to the first substrate 10. The color filter layer 202 includes a black matrix 202a and a plurality of color resist blocks 202b. A second recess 20a is disposed in the base 201. The black matrix 202a is disposed on the surface of the base 201 closest to the first substrate 10 so as to be positioned in the display area AA. The color resist blocks 202b are disposed between the black matrix 202a. In this embodiment, a black matrix structure is not provided in the portion corresponding to the frame area NA, eliminating a light-shielding structure that shields the second display module 200. This increases the screen utilization rate of the first display module 100 and enables a narrow frame design. Furthermore, the second recess 20a in the base 201 reduces the thickness of the base 201 corresponding to the frame area NA, allowing light from the second display module 200 to be more uniformly transmitted.

[0044] In another embodiment, the base 201 may be a glass base having a thickness of 0.5 mm or more. For example, the thickness of the base 201 may be any one of 0.5 mm, 0.7 mm, 0.9 mm, and 1 mm. Since the thickness of the base 201 according to the embodiment of the present application is 0.5 mm or more, the risk of damaging the base 201 is avoided when thinning the base 201 corresponding to the frame area NA, and light from the display area AA is likely to be uniformly transmitted.

[0045] The color resist blocks include a red color resist block, a green color resist block, and a blue color resist block.

[0046] The first display module 100 further includes a sealant 60. The sealant 60 is provided between the first substrate 10 and the second substrate 20. The first substrate 10 is adhered to the second substrate 20 by the sealant 60. The sealant 60 is provided on the periphery of the liquid crystal layer 30, that is, the sealant 60 is provided around the liquid crystal layer 30, and the sealant 60 is provided in a region corresponding to the frame region NA of the first display module 100.

[0047] In other embodiments, the color filter layer 202 may also be provided on the first substrate 10. The pixel aperture ratio of the bonded display panel 1000 can be improved by using COA (Color Filter On Array) technology.

[0048] In another embodiment, the bonded display panel 1000 further includes a liquid crystal layer 30. The liquid crystal layer 30 is disposed between the first substrate 10 and the second substrate 20 so as to be located in the display area AA. In this embodiment, the first display module 100 is a liquid crystal display module. A liquid crystal display module typically seals the liquid crystal structure using a sealant, which results in a noticeable black border due to the black matrix and sealing area located at the edge of the display module, which is detrimental to achieving a narrow frame. In particular, in a liquid crystal bonded display panel, there is usually a dark line at the seam, including the sealing area, between adjacent liquid crystal display panels. Therefore, in the embodiment of the present application, an accommodating groove 40a is formed in the portion corresponding to the frame area NA of the first display module 100, and this accommodating groove 40a is bonded to the accommodating groove 40a of the adjacent first display module 100 to form an accommodating cavity 40. The second display module 200 is disposed in the accommodating cavity 40 and shields the gap S, thereby realizing seamless bonding of the bonded display panel 1000, increasing the screen utilization rate of the bonded display panel 1000, and improving the display quality.

[0049] 3, the second display module 200 includes a driving substrate 21, connection pads 22, and an LED chip 23. The driving substrate 21 is provided in the first recess 10a and shields the gap S. The connection pads 22 are provided on the driving substrate 21. The LED chip 23 is provided on a surface of the driving substrate 21 that is away from the bottom of the first recess 10a. The LED chip 23 is electrically connected to the driving substrate 21 by the connection pads 22, and the driving substrate 21 drives the LED chip 23 to emit light.

[0050] In other embodiments, the drive substrate 21 includes a printed circuit board (PCB) based drive substrate, a glass based drive substrate, and the like.

[0051] In other embodiments, the LED chip 23 may be a Mirco LED chip or a Mini LED chip. The second display module 200 uses small light-emitting diodes, such as Mirco LEDs and Mini LEDs, for its display. By improving the process and panel design, it is possible to fabricate a Mirco LED or Mini LED light-emitting structure with a smaller spacing. The smaller spacing between the light-emitting diodes in the Mirco LED or Mini LED light-emitting structure allows for a higher resolution display within a narrow seam, improving the display effect. Meanwhile, it achieves the effect of no visual borders, better integrates with the first display module 100, and makes the display screen more continuous and complete.

[0052] In another embodiment, the distance from the bottom of the first recess 10a to the bottom of the second recess 20a is equal to the thickness of the second display module 200, and the width of the receiving cavity 40 is equal to the width of the second display module 200. By locking the second display module 200 in the receiving cavity 40, the second display module 200 does not shake, and the stability of the bonded display panel 1000 is improved.

[0053] In another embodiment, the spacing between two adjacent pixels of the first display module 100 is equal to the spacing between two adjacent pixels of the second display module 200, thereby achieving color gamut synchronization between the first display module 100 and the second display module 200 and further improving the display quality of the combined display panel 1000.

[0054] FIG. 4 is a second schematic diagram of a bonded display panel according to an embodiment of the present disclosure. Compared with the bonded display panel 1000 shown in FIG. 1 , the bonded display panel 1000 according to the present disclosure further includes an optical adhesive 50, which is filled into the gap S with an optically clear adhesive (OCA) 50. Surface-to-surface bonding using an OCA optical adhesive provides higher strength. Furthermore, the high light transmittance of the OCA optical adhesive effectively eliminates the gap S. The gap S is a small gap that occurs between the first display modules 100 when they are bonded. Because the gap distance is small, it usually does not affect the display effect. Filling the gap S with the optical adhesive 50 allows for a more complete and continuous screen display. Therefore, the OCA optical adhesive not only ensures the stability of the connection between two adjacent first display modules 100, but also flattens the product surface, avoiding the problem of uneven thickness, thereby improving the display effect of the bonded display panel 1000.

[0055] In another embodiment, the material of the optical adhesive 50 is selected from one or any combination of organic silica gel, acrylic adhesive, epoxy sealant, and polyurethane adhesive. In this application, polymer materials have high viscosity, high density, and high light transmittance. Therefore, in this embodiment, optical materials with high water and oxygen blocking capabilities, such as organic silica gel, acrylic adhesive, epoxy sealant, and polyurethane adhesive, are selected. These optical materials have high water and oxygen blocking capabilities and excellent optical performance. The optical adhesive 50 according to this embodiment allows two adjacent frame regions NA to be directly bonded together, eliminating the need for an adhesive layer.

[0056] 5 is a third schematic diagram of a bonded display panel according to an embodiment of the present invention. Compared to the bonded display panel 1000 shown in FIG. 1, the bonded display panel 1000 according to the embodiment of the present invention further includes a magnetic member 70 disposed at the bottom of the first recess 10a. The second display module 200 further includes a magnetic metal layer 25 disposed on the side of the driving substrate 21 away from the LED chip 23. When bonding the first display module 100 and the second display module 200 together, the magnetic member 70 and the magnetic metal layer 25 are magnetically attracted to each other, thereby enabling rapid bonding of the bonded display panel 1000.

[0057] FIG. 6 is a fourth schematic diagram of a bonded display panel according to an embodiment of the present invention. Compared with the bonded display panel 1000 shown in FIG. 1, the bonded display panel 1000 according to this embodiment of the present invention differs in that the second display module 200 includes a driving substrate 21 and an OLED light-emitting functional layer 24. The driving substrate 21 is disposed within the first recess 10a and covers the gap S. The OLED light-emitting functional layer 24 is disposed on the side of the driving substrate 21 away from the bottom surface of the first recess 10a. The second display module 200 according to this embodiment of the present invention is an OLED display module, which increases the number of bonded types supported by the bonded display panel 1000 and can meet customer needs for the type of bonded display panel 1000.

[0058] The OLED light-emitting functional layer 24 may include an anode, a pixel-defining layer, a light-emitting layer, and a cathode. The anode is connected to the driving substrate 21. The pixel-defining layer is disposed on the anode and includes an opening. The opening exposes a portion of the anode. The light-emitting layer is confined within the opening, and the cathode is disposed on the pixel-defining layer.

[0059] According to an embodiment of the present application, there is further provided a combined display device. Fig. 7 is a schematic diagram of a combined display device according to an embodiment of the present application. The combined display device 2000 includes a combined display panel 1000 and a backlight module 300. The combined display panel 1000 is any of the combined display panels 1000 described above. The backlight module 300 is for providing backlight for the first display module.

[0060] According to an embodiment of the present application, a bonded display device is provided. The bonded display device 2000 includes a bonded display panel 1000 and a backlight module 300. As shown in FIGS. 1 to 6, the bonded display panel 1000 includes at least two bonded first display modules 100 and at least one bonded second display module 200. A gap S exists between the two adjacent bonded first display modules 100. The first display module 100 includes a display area AA and a frame area NA outside the display area AA. An accommodating groove 40a is formed in a portion of the first display module 100 corresponding to the frame area NA. An opening of the accommodating groove 40a is located on the side of the frame area NA that is close to the gap S and communicates with the gap S. The accommodating groove 40a of one of two adjacent first display modules 100 is bonded to the accommodating groove 40a of the other first display module 100 to form an accommodating cavity 40. At least one second display module 200 is disposed in the receiving cavity 40 and covers the gap S.

[0061] According to the embodiment of the present application, an accommodating groove 40a is formed in a portion of the first display module 100 corresponding to the frame area NA, and the accommodating groove 40a is joined with the accommodating groove 40a of an adjacent first display module 100 to form an accommodating cavity 40. The second display module 200 is disposed in the accommodating cavity 40 and covers the gap S, thereby realizing a seamless joining of the joined display panel 1000, increasing the screen utilization rate of the joined display panel 1000, and improving display quality. Furthermore, according to the embodiment of the present application, the opening of the accommodating groove 40a is located on the side closest to the gap S, so there is no step between the first display module 100 and the second display module 200, ensuring the flatness of the light-emitting surface of the joined display panel 1000 and effectively improving the flatness of the light-emitting surface. This solves the technical issues of the user not being able to see the side of the second display module 200 when viewed from the side and the presence of blurring at the seam when viewed from the side, and significantly improving the display experience.

[0062] The junction display device 2000 of the present application can be applied to electronic equipment, which may be at least one of a smartphone, a tablet computer, an e-book reader, a computer, a media player, a portable medical device, a camera, a game console, a car navigation system, or an electronic signage.

[0063] As described above, although the present application has disclosed preferred embodiments as described above, the above preferred embodiments are not intended to limit the present application, and a person skilled in the art may make various modifications and alterations without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application is based on the content limited by the claims.

Claims

1. A joint display panel including at least two first display modules and at least one second display module joined together, a gap exists between two adjacent first display modules joined together; the first display module includes a display area and a frame area provided outside the display area, and an opening is located on a side of the frame area that is close to the gap, and an accommodating groove is formed in the portion corresponding to the frame area, the accommodating groove communicating with the gap; The receiving groove of one of the two adjacent first display modules is joined to the receiving groove of the other first display module to form a receiving cavity; the second display module is disposed in the receiving cavity and covers the gap; the first display module includes a first substrate and a second substrate facing each other; the first substrate has a first recess located on a side adjacent to the second substrate; the second substrate has a second recess located on a side closer to the first substrate; The receiving groove is formed by being surrounded by the first recess and the second recess, The second substrate is a base provided with the second recess; a black matrix provided on a surface of the base adjacent to the first substrate so as to be positioned in the display area; a plurality of color resist blocks disposed between the black matrices; At least a part of the gap is formed between the bases of the second substrates of two adjacent first display modules; The gap is filled with an optical adhesive.

2. The material of the optical adhesive is selected from one of organic silica gel, acrylic adhesive, epoxy sealant and polyurethane adhesive, or any combination thereof; The bonded display panel of claim 1 .

3. The second display module is a drive substrate provided in the first recess and shielding the gap; an LED chip provided on the drive substrate so as to be located on a surface away from the first recess, The bonded display panel of claim 1 .

4. the drive board is a printed circuit-based drive board; The bonded display panel of claim 3.

5. The first substrate is a base portion provided with the first recess; a thin film transistor structure layer provided on the base portion, The bonded display panel of claim 1 .

6. a liquid crystal layer disposed between the first substrate and the second substrate and positioned in the display area; The bonded display panel of claim 1 .

7. The second display module is a drive substrate provided in the first recess and shielding the gap; an OLED light-emitting function layer provided on a side of the driving substrate away from the bottom surface of the first recess, The bonded display panel of claim 1 .

8. a distance from a bottom of the first recess to a bottom of the second recess is equal to a thickness of the second display module; The bonded display panel of claim 1 .

9. The width of the receiving cavity is equal to the width of the second display module; The bonded display panel of claim 1 .

10. The distance between two adjacent pixels of the first display module is equal to the distance between two adjacent pixels of the second display module; The bonded display panel of claim 1 .

11. The joint display panel of claim 1 , wherein the first display module further includes a magnetic member, and the second display module further includes a magnetic metal layer that is magnetically attracted to the magnetic member.

12. The second display module is a drive substrate provided in the first recess and shielding the gap; an LED chip provided on the drive substrate so as to be located on a surface away from the first recess, The bonded display panel of claim 11.

13. the magnetic member is provided on a bottom of the first recess, and the magnetic metal layer is provided on a side of the drive substrate that is farther from the LED chip; The bonded display panel of claim 12.

14. The bonded display panel according to any one of claims 1 to 13, a backlight module for providing backlight for the first display module; Junction display device.

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