Joint display panel and joint 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] The present application relates to the field of displays, and in particular to bonded display panels and bonded display devices. [Background technology]

[0002] In conventional display panels, a large amount of metal wiring is required in the frame area, and in liquid crystal displays, a sealant is usually used to seal the liquid crystal structure, resulting in a noticeable black frame due to the black matrix and sealing area located at the edge of the display panel.

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

[0004] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 adjacent to the gap and a receiving groove is formed in the portion corresponding to the frame area, the receiving 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 mounted in the receiving cavity and a bonded display panel is provided to cover 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 a side adjacent to the second substrate, and the second substrate having a second recess located on a side adjacent 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 driving substrate disposed within the first recess and shielding the gap, and an LED chip disposed on the driving substrate so as to be positioned on a surface facing 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 having the second recess, a black matrix provided on a surface of the base adjacent to the first substrate so as to be located in the display area, and a plurality of color resist blocks provided between the black matrix.

[0011] In another embodiment of the present disclosure, the display device may further include a liquid crystal layer disposed between the first substrate and the second substrate and located 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 a 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 a 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 spacing between two adjacent pixels of the first display module may be equal to the spacing between two adjacent pixels of the second display module.

[0016] Further, according to the embodiment of the present application, A joint display panel including at least two jointed first display modules and at least one jointed second display module, wherein a gap exists between two adjacent jointed first display modules; the first display module includes a display area and a frame area provided outside the display area, and an accommodating groove is formed in a portion corresponding to the frame area, the opening being located on a side of the frame area adjacent to the gap and communicating with the gap, and the accommodating groove of one of the two adjacent first display modules is joined to the accommodating groove of the other first display module to form an accommodating cavity; The second display module includes a bonding 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 a side adjacent to the second substrate, and the second substrate having a second recess located on a side adjacent 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 driving substrate disposed within the first recess and shielding the gap, and an LED chip disposed on the driving substrate so as to be positioned on a surface facing 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 having the second recess, a black matrix provided on a surface of the base adjacent to the first substrate so as to be located 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 to be located 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 a bottom surface of the first recess.

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

[0025] In the joint display panel and joint display device according to the embodiment of the present application, the joint display panel includes at least two first display modules and at least one second display module that are joined together. A gap exists between the two first display modules that are joined together so as to be adjacent to each other. The first display module includes a display area and a frame area that is provided outside the display area. An accommodating groove is formed in a portion of the first display module that corresponds 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 joined together to form an accommodating cavity. At least one second display module is provided in the accommodating cavity and covers the gap.

[0026] According to the embodiment of the present application, a receiving groove is formed in a portion corresponding to the frame region of the first display module, and the receiving groove is joined with the receiving groove of the adjacent first display module to form a receiving cavity, and the second display module is provided in the receiving cavity and the gap is shielded, thereby realizing a seamless joining of the joined display panel, increasing the screen utilization rate of the joined display panel, and improving the display quality. In addition, according to the embodiment of the present application, the opening of the receiving groove is located on the side close to the gap, so that there is no step between the first display module and the second display module, which ensures the flatness of the light output surface of the joined display panel, effectively improves the flatness of the light output surface, and improves the technical problem that the user cannot see the side of the second display module when viewed from the side, and there is blurring when viewed from the side at the seam, and greatly improves the display feeling. [Brief description of the drawings]

[0027] In order to more clearly describe the technical means of the embodiments of the present application, the drawings necessary for describing 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 joint display panel according to an embodiment of the present application. [Diagram 2] 1 is a schematic configuration diagram of a first display module of the present application. [Diagram 3] FIG. 2 is a schematic diagram of a second display module according to an embodiment of the present application. [Figure 4] FIG. 2 is a second schematic diagram of a joined display panel according to an embodiment of the present application. [Diagram 5] FIG. 3 is a third schematic diagram of a joined display panel according to an embodiment of the present application. [Figure 6] FIG. 4 is a schematic diagram of a joint display panel according to an embodiment of the present application. [Figure 7] 1 is a schematic diagram of a joint display device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] In order to make the object, technical means and advantages of the present application more clear, 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. The term "embodiment" used in this specification means an example, an example, or an illustration.

[0030] In the description of this application, the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," etc., are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of easily explaining and simplifying the description of this application, and do not indicate or suggest that the devices or parts shown have a specific orientation and must be configured and operated in a specific orientation, and should not be understood as limiting this application. In addition, the terms "first" and "second" are merely for explanatory purposes, and should not be understood as indicating or suggesting the relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature limited to "first" or "second" may explicitly or implicitly include one or more of the said features. In the description of this application, unless there is a clear and specific limitation, "plurality" means two or more.

[0031] According to the embodiments of the present application, a joint display panel and a joint display device are provided. The following will be described 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 provided 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 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 the embodiment of the present application, a receiving groove is formed in a portion corresponding to the frame region of the first display module, and the receiving groove is joined with the receiving groove of the adjacent first display module to form a receiving cavity, and the second display module is provided in the receiving cavity and the gap is shielded, thereby realizing a seamless joining of the joined display panel, increasing the screen utilization rate of the joined display panel, and improving the display quality. In addition, according to the embodiment of the present application, the opening of the receiving groove is located on the side close to the gap, so that there is no step between the first display module and the second display module, which ensures the flatness of the light output surface of the joined display panel, effectively improves the flatness of the light output surface, and improves the technical problem that the user cannot see the side of the second display module when viewed from the side, and there is blurring when viewed from the side at the seam, and greatly improves the display feeling.

[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 an embodiment of the present application. According to an embodiment of the present application, a bonded display panel 1000 is provided. The bonded display panel 1000 includes at least two first display modules 100 and at least one second display module 200 bonded together. A gap S exists between the two first display modules 100 bonded together so as to be adjacent to each other. The first display module 100 includes a display area AA and a frame area NA provided outside the display area AA. A storage groove 40a is formed in a portion of the first display module 100 corresponding to the frame area NA. The opening of the storage 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 is joined 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 accommodating cavity 40 and covers the gap S.

[0036] According to the embodiment of the present application, a receiving groove 40a is formed in a portion corresponding to the frame area NA of the first display module 100, and the receiving groove 40a is joined to the receiving groove 40a of the adjacent first display module 100 to form a receiving cavity 40, and the second display module 200 is provided in the receiving cavity 40 and shields the gap S, thereby realizing seamless joining of the joined display panel 1000, increasing the screen utilization rate of the joined display panel 1000, and improving the display quality. In addition, according to the embodiment of the present application, the opening of the receiving groove 40a is located on the side close to the gap S, so that there is no step between the first display module 100 and the second display module 200, which ensures the flatness of the light output surface of the joined display panel 1000 and effectively improves the flatness of the light output surface, thereby improving the technical problem that the user cannot see the side of the second display module 200 in side view and there is blurring in side view of the seam, and greatly improving the 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 that is closer to the second substrate 20. The second substrate 20 has a second recess 20a, and the second recess 20a is located on the side of the second substrate 20 that is closer 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, and the thickness thereof is 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 destroying the base 101 when performing a thinning process on the base 101 corresponding to the frame region NA.

[0042] It should be understood that the thin film transistor structure layer in the embodiment of the present application is a thin film transistor according to a known technology, and may include any one of a bottom gate type thin film transistor, a top gate type thin film transistor, and a dual gate type 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 provided on the side of the base 201 close to the first substrate 10. The color filter layer 202 includes a black matrix 202a and a plurality of color resist blocks 202b. The second recess 20a is provided in the base 201. The black matrix 202a is provided on the surface of the base 201 close to the first substrate 10 so as to be located in the display area AA. The color resist blocks 202b are provided between the black matrices 202a. In the embodiment of the present application, since the portion corresponding to the frame area NA does not have a black matrix structure, there is no light-shielding structure that shields the second display module 200, and the utilization rate of the screen of the first display module 100 can be increased and a narrow frame design can be realized. In addition, since the base 201 is provided with the second recess 20a, the thickness of the base 201 corresponding to the frame area NA is thin, and the light of the second display module 200 that is directly displayed is easily transmitted uniformly.

[0044] In other embodiments, the base 201 may be a glass base, and the thickness thereof is 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, when the base 201 corresponding to the frame area NA is thinned, the risk of breaking the base 201 is avoided, and the light of the display area AA is easily transmitted uniformly.

[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 position corresponding to the frame region NA of the first display module 100.

[0047] In other embodiments, a 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 Color Filter On Array (COA) 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 the embodiment of the present application, the first display module 100 is a liquid crystal display module. Since a liquid crystal display module usually seals a liquid crystal structure using a sealant, a black matrix and a sealing area located at the edge of the display module cause a noticeable black frame, which is disadvantageous in realizing a narrow frame. In particular, in a liquid crystal bonded display panel, a dark line usually exists 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 a portion corresponding to the frame area NA of the first display module 100, and the 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 provided 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, a connection pad 22, and an LED chip 23. The driving substrate 21 is provided in the first recess 10a and covers the gap S. The connection pad 22 is 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 pad 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 is displayed by using small light-emitting diodes such as Mirco-LED and Mini-LED, and by improving the process and panel design, a Mirco LED light-emitting structure or Mini LED light-emitting structure with a smaller spacing can be fabricated. The smaller spacing between the light-emitting diodes in the Mirco LED light-emitting structure or Mini LED light-emitting structure can realize a higher resolution display within a narrow seam, improve the display effect, and achieve the effect of no visual border, better blend with the first display module 100, and make 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 will not shake, and the stability of the bonded display panel 1000 can be 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 realizing synchronization of the color gamuts between the first display module 100 and the second display module 200, and further improving the display quality of the joint display panel 1000.

[0054] FIG. 4 is a second schematic diagram of a bonded display panel according to an embodiment of the present application. Compared with the bonded display panel 1000 shown in FIG. 1, the bonded display panel 1000 according to the embodiment of the present application further includes an optical adhesive 50, and the optical adhesive (Optically Clear Adhesive, OCA) 50 is filled in the gap S. When the OCA optical adhesive is used for surface connection, the strength is higher. In addition, the OCA optical adhesive has high light transmittance, and the gap S can be effectively eliminated. The gap S is a small gap that occurs between the first display modules 100 when they are bonded. Since the gap distance is small, it usually does not affect the display effect. When the optical adhesive 50 is filled in the gap S, a more complete and continuous screen can be displayed. Therefore, the OCA optical adhesive not only ensures the stability of the connection between the two adjacent first display modules 100, but also makes the surface of the product flatter, 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 of organic silica gel, acrylic adhesive, epoxy sealant, and polyurethane adhesive, or any combination thereof. In this application, the polymer material has high viscosity, high density, and high light transmittance, so the embodiment of this application selects optical materials with high water and oxygen blocking ability, such as organic silica gel, acrylic adhesive, epoxy sealant, and polyurethane adhesive, which have high water and oxygen blocking ability and excellent optical performance. The optical adhesive 50 according to the embodiment of this application can directly bond two adjacent frame areas NA together, and no adhesive layer is required.

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

[0057] 6 is a fourth schematic diagram of a joint display panel according to an embodiment of the present application. The joint display panel 1000 according to the embodiment of the present application is different from the joint display panel 1000 shown in FIG. 1 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 in 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 that is away from the bottom surface of the first recess 10a. The second display module 200 according to the embodiment of the present application is an OLED display module, which can increase the joint types supported by the joint display panel 1000 to meet customer needs for the type of the joint 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 bonded display device. Fig. 7 is a schematic diagram of a bonded display device according to an embodiment of the present application. The bonded display device 2000 includes a bonded display panel 1000 and a backlight module 300. The bonded display panel 1000 is any of the bonded 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 joint display device is provided. The joint display device 2000 includes a joint display panel 1000 and a backlight module 300. As shown in FIGS. 1 to 6, the joint display panel 1000 includes at least two first display modules 100 and at least one second display module 200 that are joined together. A gap S exists between the two first display modules 100 that are joined together so as to be adjacent to each other. The first display module 100 includes a display area AA and a frame area NA that is provided outside the display area AA. An accommodating groove 40a is formed in a portion of the first display module 100 that corresponds to the frame area NA. An opening of the accommodating groove 40a is located on a 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 the two adjacent first display modules 100 is joined 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, a receiving groove 40a is formed in a portion corresponding to the frame area NA of the first display module 100, and the receiving groove 40a is joined with the receiving groove 40a of the adjacent first display module 100 to form a receiving cavity 40, and the second display module 200 is provided in the receiving cavity 40 and shields 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 the display quality. In addition, according to the embodiment of the present application, the opening of the receiving groove 40a is located on the side close to the gap S, so that there is no step between the first display module 100 and the second display module 200, which ensures the flatness of the light output surface of the joined display panel 1000, effectively improving the flatness of the light output surface, and improving the technical problem that the user cannot see the side of the second display module 200 when viewed from the side, and there is blurring when viewed from the side at the joint, and greatly improving the display feeling.

[0062] The joint display device 2000 of the present application can be applied to electronic equipment, and the electronic equipment 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 signboard.

[0063] In view of the above, although preferred embodiments have been disclosed in this application 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 modifications without departing from the spirit and scope of the present application, and therefore the scope of protection of the present application shall be 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 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 adjacent to the gap and a receiving groove is formed in the portion corresponding to the frame area, the receiving 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 gap is filled with an optical adhesive. Jointed display panel.

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

3. 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 adjacent to the first substrate, The receiving groove is formed by being surrounded by the first recess and the second recess. The bonded display panel of claim 1 .

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

5. The drive board is a printed circuit based drive board. The bonded display panel of claim 4.

6. 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 3.

7. 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 located in the display area; a plurality of color resist blocks provided between the black matrices; The bonded display panel of claim 6.

8. 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 3.

9. 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 a bottom surface of the first recess; The bonded display panel of claim 3.

10. 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 3.

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

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

13. 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 adjacent to the gap and a receiving groove is formed in the portion corresponding to the frame area, the receiving 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 further includes a magnetic member, and the second display module further includes a magnetic metal layer that is magnetically attracted to the magnetic member. Jointed display panel.

14. 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 adjacent to the first substrate, The receiving groove is formed by being surrounded by the first recess and the second recess. The bonded display panel of claim 13.

15. The second display module is a drive substrate provided in the first recess and shielding the gap; an LED chip provided on the driving substrate so as to be located on a surface away from the first recess; The bonded display panel of claim 14.

16. 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 away from the LED chip; 16. The bonded display panel of claim 15.

17. A bonded display panel according to any one of claims 1 to 16, a backlight module providing a backlight for the first display module. Junction display device.

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