Display module

Abstract

The invention relates to a display module. The display module comprises a display panel, a supporting laminated layer and a filling part, wherein the display panel comprises a display part and a binding part; the supporting laminated layer is arranged on one side of the non-light-emitting surface of the display panel and comprises a back plate layer, the back plate layer comprises a first back plate stacked with the display part and a second back plate stacked with the binding part, the first back plate and the second back plate are made of different materials, the supporting laminated layer is provided with a through hole, and the through hole is communicated with the first back plate and the second back plate. The through hole penetrates through the supporting lamination layer in the thickness direction of the supporting lamination layer, and the through hole penetrates through the first back plate; the filling part is arranged in the through hole, the end, close to the display part, of the filling part makes contact with the display part, and the thickness of the filling part is smaller than or equal to the depth of the through hole. According to the display module, the filling part is arranged in the through hole and makes contact with the display part, the filling part can cover the surface, located in the through hole, of the display part, and the risk that foreign matter falls into the through hole and makes contact with the display part, and consequently a display panel is damaged is reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display module. Background Technology

[0002] OLED (Organic Light-Emitting Diode) display technology is a new type of display technology that has gradually attracted attention due to its unique advantages such as low power consumption, high saturation, fast response time and wide viewing angle, and has occupied a certain position in the field of display technology.

[0003] The display module includes a display panel and a back panel. The back panel has through holes to avoid interfering with sensor functionality. The display panel is exposed at the through holes, making it susceptible to damage during production. Summary of the Invention

[0004] This application provides a display module to improve the technical problem that the display panel is exposed at the through holes and is easily damaged during the production process.

[0005] To achieve the above objectives, this application provides a display module, comprising: The display panel includes a display section and a mounting section located on one side of the display section; A support stack is disposed on the non-light-emitting side of the display panel. The support stack includes a back plate layer. The back plate layer includes a first back plate stacked with the display part and a second back plate stacked with the bonding part. The material of the first back plate is different from that of the second back plate. The support stack is provided with a through hole. The through hole penetrates the support stack along the thickness direction of the support stack and passes through the first back plate. A filling portion is disposed within the through hole, with one end of the filling portion near the display portion contacting the display portion, and the thickness of the filling portion being less than or equal to the depth of the through hole.

[0006] Optionally, the support stack further includes: A buffer layer is disposed on the side of the first back panel away from the display panel; A support layer is disposed on the side of the buffer layer away from the display panel; Wherein, the end of the filling portion away from the display portion does not extend beyond the surface of the first back plate away from the display portion; or, the end of the filling portion away from the display portion extends into the support layer and does not extend beyond the surface of the support layer away from the display portion.

[0007] Optionally, the diameter of the through hole on the side away from the display panel is greater than or equal to the diameter of the through hole on the side closer to the display panel.

[0008] Optionally, the material of the filling portion includes a curable adhesive, and the light transmittance of the filling portion is greater than or equal to 88%.

[0009] Optionally, the end face of the filling portion away from the display panel has a recess that is recessed toward the display panel, and the surface of the recess includes a curved surface.

[0010] Optionally, the support stack further includes: The first adhesive layer is partially disposed between the display unit and the first back plate; The second adhesive layer is disposed between the first back plate and the buffer layer; A third adhesive layer is disposed between the buffer layer and the support layer; The refractive indices of the first adhesive layer, the second adhesive layer, and the third adhesive layer are all less than the refractive index of the filling portion.

[0011] Optionally, the adhesive properties of the first adhesive layer, the second adhesive layer, and the third adhesive layer are all greater than the adhesive properties of the filler material.

[0012] Optionally, the wall of the through hole located in the first adhesive layer is flush with the wall of the through hole located in the first back plate; and / or, The wall of the through hole located in the buffer layer is flush with the wall of the through hole located in the second adhesive layer and the third adhesive layer.

[0013] Optionally, the elastic modulus of the first back plate is greater than that of the second back plate.

[0014] Optionally, the first back panel is made of metal, and the second back panel is made of plastic.

[0015] Optionally, the thickness of the first backplate is less than or equal to 30 micrometers.

[0016] Optionally, the display unit has a display area and a non-display area located on at least one side of the display area; the orthographic projection of the filling part on the display unit is located within the display area.

[0017] In the display module of this application embodiment, by providing a filling part in the through hole, the filling part contacts the display part, and the filling part can cover the surface of the display part located in the through hole, thereby reducing the risk of foreign objects falling into the through hole and contacting the display part, causing damage to the display panel.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0021] Figure 1 This is a top view of a display module provided in an exemplary embodiment of this disclosure; Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at point CC; Figure 3 yes Figure 2 An enlarged structural diagram of a through-hole in a [structure]. Figure 4 yes Figure 2 Another enlarged structural diagram of the through hole in the middle; Figure 5 yes Figure 2 Another enlarged structural diagram of the through hole in the middle; Figure 6 This is a bottom view of the backing layer and the first adhesive layer; Figure 7 This is a cross-sectional structural diagram of the backing layer and the first adhesive layer.

[0022] Explanation of reference numerals in the attached figures: AA - Display area; NA - Non-display area; 10-Display panel; 11-Display section; 12-Binding section; 13-Bending section; 20 - Support stack; 20a - Through hole; 21-Backsheet layer; 211-First backsheet; 212-Second backsheet; 22-Buffer layer; 23-Support layer; 24 - First adhesive layer; 25 - Second adhesive layer; 26 - Third adhesive layer; 30 - Filled portion; 31 - Recessed portion; 40-Polarizing film; 50 - Fourth adhesive layer; 60 - Cover plate; 61 - Light-shielding layer; 62 - Cover plate body. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0024] This application provides a display module, such as Figures 1 to 5 As shown, the display module includes a display panel 10, a support stack 20, and a filling portion 30. The display panel 10 includes a display portion 11 and a binding portion 12 located on one side of the display portion 11. The support stack 20 is disposed on the non-light-emitting side of the display panel 10. The support stack 20 includes a back plate layer 21, which includes a first back plate 211 stacked with the display portion 11 and a second back plate 212 stacked with the binding portion 12. The materials of the first back plate 211 and the second back plate 212 are different. The support stack 20 is provided with a through hole 20a, which penetrates the support stack 20 along the thickness direction and passes through the first back plate 211. The filling portion 30 is disposed in the through hole 20a. The end of the filling portion 30 near the display portion 11 is in contact with the display portion 11. The thickness of the filling portion 30 is less than or equal to the depth of the through hole 20a.

[0025] In some embodiments, the display module is a flexible display panel, which can be a dynamic folding (DF) panel, a static folding (SF) panel, etc. Dynamic folding panels are also called foldable screens, and static folding panels are also called flat screens.

[0026] In some embodiments, the display panel 10 may be an OLED panel.

[0027] like Figure 1 and Figure 2 As shown, the display unit 11 includes a display area AA and a non-display area NA located on at least one side of the display area AA. The display unit 11 is used to display an image. A bonding part 12 is located on the non-light-emitting side of the display unit 11, and the bonding part 12 is provided with bonding terminals, etc. The bonding part 12 is used to connect to a bonding component. The bonding component includes a flexible circuit board, a printed circuit board, a driver chip, etc.

[0028] like Figure 2 As shown, a curved portion 13 is also provided between the display portion 11 and the binding portion 12. One end of the curved portion 13 is connected to the display portion 11, and the other end of the curved portion 13 is connected to the binding portion 12. The binding portion 12 is bent to the non-light-emitting side of the display portion 11 through the curved portion 13. With the above arrangement, the bezel width of the display panel 10 corresponding to the side where the binding portion 12 is provided can be reduced, thus achieving a narrow bezel.

[0029] It should be noted that one side surface of the display unit 11 is used to display the image, the side surface for displaying the image is the light-emitting surface, and the side surface opposite to the light-emitting surface is the non-light-emitting surface.

[0030] The support stack 20 is disposed on the non-light-emitting side of the display unit 11, and the support stack 20 can support and protect the display unit 11. The support stack 20 can be a stack of multiple film layers, and adjacent layers can be bonded together, but it is not limited to this.

[0031] like Figure 2 As shown, the support stack 20 includes a backplate layer 21, which includes a first backplate 211 and a second backplate 212. The first backplate 211 is located on the non-light-emitting side of the display unit 11, and the second backplate 212 is located between the first backplate 211 and the bonding part 12. The first backplate 211 provides support and protection for the display unit 11, and the second backplate 212 provides support and protection for the bonding part 12.

[0032] In some embodiments, the material of the first backplate 211 is different from the material of the second backplate 212.

[0033] The support stack 20 is provided with a through hole 20a, which allows ambient light to pass through, so that the sensor located on the side of the support stack 20 away from the display panel 10 can receive ambient light and thus realize the sensing function.

[0034] In some embodiments, such as Figure 2 As shown, the display module also includes a cover plate 60, which is disposed on the light-emitting side of the display panel 10. The cover plate 60 includes a cover plate body 62 and a light-shielding layer 61 disposed on one side of the cover plate body 62.

[0035] In some embodiments, the material of the cover body 62 can be a flexible material, such as ultra-foldable glass, ultra-thin glass, polyimide, polyethylene terephthalate, etc.

[0036] In some embodiments, the light-shielding layer 61 is a material with light-shielding capabilities, such as light-shielding ink, but is not limited thereto.

[0037] In some embodiments, such as Figure 2 As shown, the display module also includes a fourth adhesive layer 50, which is located between the cover plate 60 and the display panel 10. The fourth adhesive layer 50 is used to bond the cover plate 60 and the display part 11.

[0038] In some embodiments, such as Figure 7As shown, the display module also includes a polarizer 40, which is disposed between the fourth adhesive layer 50 and the display section 11. The polarizer 40 can be used to reduce the reflection of ambient light by the display panel 10 and improve the glare problem of the display panel 10.

[0039] In some embodiments, the fourth adhesive layer 50 may be an optically transparent adhesive (OCA) or the like. Optically transparent adhesives have high light transmittance, which can reduce the impact on the display brightness of the display module.

[0040] In some embodiments, the thickness of the filling portion 30 is less than or equal to the depth of the through hole 20a, that is, the filling portion 30 does not extend beyond the through hole 20a. The thickness of the filling portion 30 refers to the dimension of the filling portion 30 in the thickness direction of the display module, and the depth of the through hole 20a refers to the dimension of the through hole 20a in the thickness direction of the display module.

[0041] The filling part 30 is disposed within the through hole 20a and is in contact with the display part 11. This means that the filling part 30 is in direct contact with the display part 11, thereby shielding the surface of the display part 11 located in the through hole 20a and reducing the risk of foreign objects falling into the through hole 20a and contacting the display part 11, causing damage to the display part 11.

[0042] Experiments have verified that the inclusion of a filling portion reduces the risk of damage to the display panel caused by foreign objects falling into the through-hole, and also improves the mechanical performance of the display module. In a steel ball drop reliability test, compared to a control group without a filling portion, the damage to the display panel in the embodiment of this application was reduced by approximately 20%.

[0043] In some embodiments, such as Figure 2 As shown, the display panel 10 also includes a curved portion 13 connecting the display section 11 and the bonding portion 12, with the bonding portion 12 located on the non-light-emitting side of the display section 11; wherein, the through hole 20a is located at the end of the support stack 20 away from the curved portion 13. That is to say, the orthographic projection of the through hole 20a on the display panel 10 is located at the end of the display section 11 away from the curved portion 13.

[0044] Optionally, such as Figure 2 As shown, the support stack 20 also includes a buffer layer 22 and a support layer 23. The buffer layer 22 is disposed on the side of the first back plate 211 away from the display panel 10; the support layer 23 is disposed on the side of the buffer layer 22 away from the display panel 10. The end of the filling portion 30 away from the display portion 11 does not extend beyond the surface of the first back plate 211 away from the display portion 11; or, the end of the filling portion 30 away from the display portion 11 extends into the support layer 23 and does not extend beyond the surface of the support layer 23 away from the display portion 11.

[0045] In some embodiments, the elastic modulus of the support layer 23 is greater than that of the buffer layer 22. The buffer layer 22 can provide shock absorption, and the support layer 23 can provide support and protection for the display panel 10.

[0046] In some embodiments, the support layer 23 can be made of metal, carbon fiber, glass, etc. For example, in a flat screen, the metal can be copper, etc. In a foldable screen, the metal can be stainless steel, etc.

[0047] In some embodiments, the buffer layer 22 may be made of at least one of foam, rubber, silicone, and plastic. The buffer layer 22 can absorb shock and reduce the risk of damage to the display unit 11 caused by external stress.

[0048] In some embodiments, such as Figure 2 As shown, a second adhesive layer 25 is provided between the buffer layer 22 and the first back plate 211, and the buffer layer 22 is bonded to the first back plate 211 through the second adhesive layer 25.

[0049] In some embodiments, such as Figure 2 As shown, a third adhesive layer 26 is provided between the buffer layer 22 and the support layer 23, and the buffer layer 22 is bonded to the support layer 23 through the third adhesive layer 26.

[0050] In some embodiments, the second adhesive layer 25 and the third adhesive layer 26 are adhesive materials, such as pressure-sensitive adhesive, mesh adhesive, etc., but are not limited thereto.

[0051] In some embodiments, such as Figure 3 As shown, the end of the filling portion 30 away from the display portion 11 does not extend beyond the surface of the first back plate 211 away from the display portion 11. In this way, the filling portion 30 can be formed after the back plate layer 21 is bonded to the display panel 10, thereby forming the filling portion 30 as early as possible and reducing the number of times the display portion 11 is exposed.

[0052] In some embodiments, such as Figure 4 and Figure 5 As shown, the end of the filling portion 30 away from the display portion 11 extends into the support layer 23 but does not exceed the surface of the support layer 23 away from the display portion 11. This allows the filling portion 30 to be formed after the support layer 23 is bonded to the display panel 10, thereby increasing the thickness of the filling portion 30. When the thickness of the filling portion 30 is greater, it can occupy more space within the through-hole 20a, increasing the mechanical strength of the film layer in the region near the through-hole 20a.

[0053] Optionally, such as Figures 3 to 5 As shown, the diameter of the through hole 20a on the side away from the display panel 10 is greater than or equal to the diameter of the through hole 20a on the side closer to the display panel 10.

[0054] In some embodiments, such as Figure 3 and Figure 4 As shown, the diameter of the through hole 20a on the side away from the display panel 10 is equal to the diameter of the through hole 20a on the side closer to the display panel 10. This means that the through hole 20a can be approximately a straight hole. Through the above arrangement, the space occupied by the through hole 20a can be reduced, and the impact of the through hole 20a on the mechanical performance of the display module can be reduced.

[0055] In some embodiments, such as Figure 5 As shown, the diameter of the through hole 20a on the side away from the display panel 10 is larger than the diameter of the through hole 20a on the side closer to the display panel 10. By setting the through hole 20a as a stepped hole, the diameter of the through hole 20a closer to the support layer 23 can be made larger than the diameter of the through hole 20a farther from the support layer 23, making it easier for the filling portion 30 to fill into the deeper through hole 20a when the filling portion 30 is formed.

[0056] Optionally, the material of the filler portion 30 includes a curable adhesive, and the light transmittance of the filler portion 30 is greater than or equal to 88%.

[0057] In some embodiments, the material of the filler portion 30 includes a curable adhesive, and the filler portion 30 can be formed in the through hole 20a by a dispensing process and then cured. For example, the material of the filler portion 30 can be epoxy resin, etc., but is not limited thereto.

[0058] It should be understood that when the filling part 30 is a curable adhesive, since the aperture of the through hole 20a on the side away from the display panel 10 is larger than the aperture of the through hole 20a on the side closer to the display panel 10, the adhesive can flow better along the inner wall of the through hole 20a towards the side closer to the display part 11 in the direction of gravity, reducing the defects of air bubbles or hollows forming in the filling part 30. Air bubbles or hollows will affect the propagation of light and affect the sensor's reception of light.

[0059] In some embodiments, the transmittance of the filling portion 30 can be 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, etc. By setting the transmittance of the filling portion 30 to be greater than or equal to 88%, the light can be blocked by the filling portion 30 as little as possible, thus avoiding affecting the sensor's reception of light.

[0060] In some embodiments, the haze of the filling portion 30 is less than or equal to 2%. Haze refers to the percentage of scattered light flux (where transmitted light deviates from the incident direction) in a transparent or translucent material relative to the total transmitted light flux. The lower the haze of the filling portion 30, the smaller the proportion of scattered light energy deviating from the incident direction, meaning more light is transmitted. This configuration allows more light to be received by the sensor.

[0061] In some embodiments, the haze of the filling portion 30 can be 2%, 1.9%, 1.8%, 1.7%, 1.6%, 1.5%, 1.4%, 1.3%, 1.2%, 1.1%, 1%, etc.

[0062] Optionally, the end face of the filling portion 30 away from the display panel 10 has a recess 31 that is recessed toward the display panel 10, and the surface of the recess 31 includes a curved surface.

[0063] In some embodiments, the surface of the recess 31 includes a curved surface, wherein the center of the curved surface is located on the side of the surface of the recess 31 near the filling portion 30.

[0064] In some embodiments, such as Figure 5 As shown, the surface of the filling portion 30 is curved. Since the refractive index of the filling portion 30 is usually greater than that of air, when ambient light passes through the through hole 20a from the light-emitting surface side of the display portion 11 and enters the sensor, the light will be refracted on the curved surface, allowing more light to enter the sensor below.

[0065] Optionally, such as Figure 2 As shown, the support stack 20 also includes a first adhesive layer 24, a second adhesive layer 25, and a third adhesive layer 26. The first adhesive layer 24 is partially disposed between the display part 11 and the first back plate 211; the second adhesive layer 25 is disposed between the first back plate 211 and the buffer layer 22; and the third adhesive layer 26 is disposed between the buffer layer 22 and the support layer 23. The refractive indices of the first adhesive layer 24, the second adhesive layer 25, and the third adhesive layer 26 are all less than the refractive index of the filling part 30.

[0066] In some embodiments, such as Figure 2 , Figure 6 and Figure 7 As shown, the display module also includes a first adhesive layer 24, which comprises a first adhesive portion and a second adhesive portion separately disposed therefrom. The first adhesive portion is located between the display portion 11 and the first back plate 211, and is used to bond the first back plate 211 to the display portion 11. The second adhesive portion is located between the bonding portion 12 and the second back plate 212, and is used to bond the second back plate 212 to the bonding portion 12. The first adhesive portion and the second adhesive portion are made of the same material and / or have the same thickness, thereby simplifying the manufacturing process of the first adhesive layer 24.

[0067] In some embodiments, please refer to Figure 6 and Figure 7The first backplate 211 and the second backplate 212 can be bonded to the display panel 10 using the same bonding process. Before bonding, the display panel 10 is in a flattened state, and the backplate layer 21 is also in a flattened state. A first adhesive portion is provided on one side of the first backplate 211, and a second adhesive portion is provided on one side of the second backplate 212. The first adhesive portion and the second adhesive portion are located on the same side of the flattened backplate layer 21. The first backplate 211 is bonded to the display part 11, and the second backplate 212 is bonded to the bonding part 12.

[0068] In some embodiments, the refractive indices of the first adhesive layer 24, the second adhesive layer 25, and the third adhesive layer 26 are all less than the refractive index of the filler portion 30. A critical surface is formed between the first adhesive portion in the first adhesive layer 24 and the filler portion 30, the second adhesive layer 25 and the filler portion 30, and the third adhesive layer 26 and the filler portion 30. When light enters the through-hole 20a from the light-emitting surface of the display portion 11, large-angle light can undergo total internal reflection at the critical surface, allowing more light to enter the sensor below the through-hole 20a.

[0069] Optionally, the adhesive properties of the first adhesive layer 24, the second adhesive layer 25, and the third adhesive layer 26 are all greater than the adhesive properties of the filler portion 30. This configuration improves the adhesive properties of the first adhesive layer 24, the second adhesive layer 25, and the third adhesive layer 26, thereby enhancing the bonding strength of the film layers within the support stack 20.

[0070] In some embodiments, the filling portion 30 can be made of a non-adhesive material, thereby preventing the filling portion 30 from sticking to foreign objects and affecting light transmission.

[0071] Optionally, such as Figures 3 to 5 As shown, the wall of the through hole 20a in the first adhesive layer 24 is flush with the wall of the through hole 20a in the first back plate 211; and / or, the wall of the through hole 20a in the buffer layer 22 is flush with the wall of the through hole 20a in the second adhesive layer 25 and the third adhesive layer 26.

[0072] In some embodiments, such as Figure 3 and Figure 4 As shown, the through-hole 20a can be roughly straight, and the pore diameter of the through-hole 20a is similar on each film layer. Due to the process deviations in the processing of the through-hole 20a on each film layer, and the bonding process in the film layer bonding within the support stack 20, the pore walls of the through-hole 20a can be flush within the allowable deviation range.

[0073] In some embodiments, such as Figure 5As shown, the first adhesive layer 24 can be integrally formed with the first back plate 211, and then the first adhesive layer 24 is bonded to the display unit 11. This means that the first back plate 211 can be adhesive-backed on only one side, thereby simplifying the bonding process of the display module. Therefore, the aperture of the through hole 20a on the first adhesive layer 24 can be similar to the aperture of the through hole 20a on the first back plate 211.

[0074] The second adhesive layer 25 and the third adhesive layer 26 can be integrally formed with the buffer layer 22, bonding the second adhesive layer 25 to the first backplate 211 as a whole. This means that the second adhesive layer 25 is provided on one side of the buffer layer 22, and the third adhesive layer 26 is provided on the other side, allowing the buffer layer 22 to be double-sided adhesive, thus simplifying the mounting process of the display module. Therefore, the aperture of the through-hole 20a on the buffer layer 22 can be similar to the aperture of the through-hole 20a on the second adhesive layer 25 and the third adhesive layer 26.

[0075] Optionally, the elastic modulus of the first backplate 211 is greater than that of the second backplate 212. This configuration improves the impact resistance of the first backplate 211, thereby enhancing the mechanical properties of the display module.

[0076] Optionally, the first back panel 211 may be made of metal, and the second back panel 212 may be made of plastic.

[0077] In some embodiments, the material of the first backplate 211 includes metal, such as stainless steel. When the material of the first backplate 211 is stainless steel, the mechanical properties of the display module can be effectively improved.

[0078] In some embodiments, the material of the second backplate 212 may be plastic, such as polyethylene terephthalate (PET), polyimide (PI), polycarbonate (PC), etc.

[0079] Optionally, the thickness of the first backplate 211 is less than or equal to 30 micrometers, thereby reducing the thickness of the display module. For example, the thickness of the first backplate 211 can be 30 micrometers, 29 micrometers, 28 micrometers, 27 micrometers, 26 micrometers, 25 micrometers, 24 micrometers, 23 micrometers, 22 micrometers, 21 micrometers, 20 micrometers, 19 micrometers, 18 micrometers, 17 micrometers, 16 micrometers, 15 micrometers, etc.

[0080] Optionally, combined Figure 1 and Figure 2 The display unit 11 has a display area AA and a non-display area NA located on at least one side of the display area AA; wherein, the orthographic projection of the filling part 30 on the display unit 11 is located within the display area AA. That is to say, the display unit 11 corresponding to the filling part 30 can still realize the display function, thereby improving the screen ratio of the display panel 10.

[0081] In this embodiment, the display module can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0082] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0083] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0084] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0085] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display module, characterized in that, include: The display panel includes a display section and a mounting section located on one side of the display section; A support stack is disposed on the non-light-emitting side of the display panel. The support stack includes a back plate layer. The back plate layer includes a first back plate stacked with the display part and a second back plate stacked with the bonding part. The material of the first back plate is different from that of the second back plate. The support stack is provided with a through hole. The through hole penetrates the support stack along the thickness direction of the support stack and passes through the first back plate. A filling portion is disposed within the through hole, with one end of the filling portion near the display portion contacting the display portion, and the thickness of the filling portion being less than or equal to the depth of the through hole.

2. The display module according to claim 1, characterized in that, The support stack also includes: A buffer layer is disposed on the side of the first back panel away from the display panel; A support layer is disposed on the side of the buffer layer away from the display panel; Wherein, the end of the filling portion away from the display portion does not extend beyond the surface of the first back plate away from the display portion; or, the end of the filling portion away from the display portion extends into the support layer and does not extend beyond the surface of the support layer away from the display portion.

3. The display module according to claim 1, characterized in that, The diameter of the through hole on the side furthest from the display panel is greater than or equal to the diameter of the through hole on the side closest to the display panel.

4. The display module according to any one of claims 1 to 3, characterized in that, The filling material includes a curable adhesive, and the light transmittance of the filling is greater than or equal to 88%.

5. The display module according to any one of claims 1 to 3, characterized in that, The end face of the filling portion away from the display panel has a recess that is recessed toward the display panel, and the surface of the recess includes a curved surface.

6. The display module according to claim 2 or 3, characterized in that, The support stack also includes: The first adhesive layer is partially disposed between the display unit and the first back plate; The second adhesive layer is disposed between the first back plate and the buffer layer; A third adhesive layer is disposed between the buffer layer and the support layer; The refractive indices of the first adhesive layer, the second adhesive layer, and the third adhesive layer are all less than the refractive index of the filling portion.

7. The display module according to claim 6, characterized in that, The adhesive properties of the first adhesive layer, the second adhesive layer, and the third adhesive layer are all greater than the adhesive properties of the filler material.

8. The display module according to claim 6, characterized in that, The wall of the through hole located in the first adhesive layer is flush with the wall of the through hole located in the first back plate; and / or, The wall of the through hole located in the buffer layer is flush with the wall of the through hole located in the second adhesive layer and the third adhesive layer.

9. The display module according to any one of claims 1 to 3, characterized in that, The elastic modulus of the first back plate is greater than that of the second back plate.

10. The display module according to claim 9, characterized in that, The first back panel is made of metal, and the second back panel is made of plastic.

11. The display module according to any one of claims 1 to 3, characterized in that, The thickness of the first backplate is less than or equal to 30 micrometers.

12. The display module according to any one of claims 1 to 3, characterized in that, The display unit has a display area and a non-display area located on at least one side of the display area; the orthographic projection of the filling part on the display unit is located within the display area.

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