Backlight module and display device

Abstract

The invention relates to the technical field of display devices, and particularly discloses a backlight module and a display device. The backlight module comprises a back plate and a rubber frame, a groove or a through hole is formed in the back plate, a main body part and a protruding part are arranged on the rubber frame, the protruding part is matched with the groove or the through hole, and the bottom face of the groove or the through hole is obliquely arranged. According to the design mode provided by the invention, the display effect of the display device is improved by reducing the deformation probability of the bottom of the back plate in the backlight module.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a backlight module and a display device. Background Art

[0002] The display device includes a display substrate (Panel) and a backlight module. The backlight module can make the display device emit light. The quality of the backlight module performance will directly affect the image quality of the display device.

[0003] However, the existing backlight module is prone to deformation, which causes the flatness of the display panel to decrease, and ultimately affects the display effect of the display device. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a backlight module and a display device, which can improve the display effect of the display device by reducing the deformation probability of the bottom of the back plate in the backlight module.

[0005] In a first aspect of the present application, a backlight module is provided, the backlight module comprising a back plate;

[0006] The back plate includes a first back plate portion and a second back plate portion, wherein the first back plate portion is connected to the second back plate portion and is bent; a groove is provided at one end of the second back plate portion away from the first back plate portion;

[0007] The first back plate portion and the second back plate portion enclose a receiving space, and a prism assembly and a rubber frame are arranged in the receiving space;

[0008] The prism assembly is connected to the first back panel portion;

[0009] The above-mentioned rubber frame includes a main body and a protruding part connected to each other, the above-mentioned main body is arranged in the above-mentioned accommodation space and respectively abuts against the above-mentioned first back plate part and the second back plate part, the above-mentioned protruding part is arranged on a side surface of the above-mentioned main body away from the above-mentioned prism assembly, and the above-mentioned protruding part cooperates with the above-mentioned groove;

[0010] The bottom surface of the groove is inclined, and the bottom surface of the groove is disposed at a side facing the prism assembly and away from the first back plate portion.

[0011] In some embodiments, the distance between the bottom surface of the groove facing the prism assembly and the first back plate portion is h1;

[0012] The distance between the bottom surface of the groove and the other side of the prism assembly is h2 and the first back plate portion;

[0013] 1

[0014] ​In some embodiments, the protrusion includes a first side surface and a second side surface that are disposed opposite to each other, the first side surface is disposed on a side of the main body that is away from the prism assembly, and the first side surface is connected to a side of the bottom surface of the groove that faces the prism assembly;

[0015] The second side surface is disposed on a side surface of the first side surface away from the prism assembly, and the second side surface is connected to a side of the bottom surface of the groove away from the prism assembly;

[0016] An orthographic projection area of ​​the first side surface on the second side surface is smaller than an area of ​​the second side surface.

[0017] In some embodiments, at least one of the first side surface and the second side surface of the protrusion is in the shape of any one of a sector, a trapezoid, a strip, a square, a wedge, and a pentagon.

[0018] In the design method provided in the present application, the present application also provides another backlight module, the backlight module includes a back plate;

[0019] The back plate includes a first back plate portion and a second back plate portion, wherein the first back plate portion is connected to the second back plate portion and is bent; a through hole is provided on the second back plate portion, and an opening direction of the through hole is parallel to a thickness direction of the second back plate portion;

[0020] The first back plate portion and the second back plate portion enclose a receiving space, and a prism assembly and a rubber frame are arranged in the receiving space;

[0021] The prism assembly is connected to the first back panel portion;

[0022] The above-mentioned rubber frame includes a main body and a protruding part connected to each other, the above-mentioned main body is arranged in the above-mentioned accommodation space and respectively abuts against the above-mentioned first back plate part and the second back plate part, the above-mentioned protruding part is arranged on a side surface of the above-mentioned main body away from the above-mentioned prism assembly, and the above-mentioned protruding part cooperates with the above-mentioned through hole;

[0023] The bottom surface of the through hole is arranged obliquely, and the bottom surface of the through hole is arranged at a side facing the prism assembly and away from the first back plate portion.

[0024] In some embodiments, the distance between the bottom surface of the through hole facing the prism assembly and the first back plate portion is h1';

[0025] The distance between the bottom surface of the through hole and the other side of the prism assembly and the first back plate portion is h2';

[0026] 1

[0027] ​In some embodiments, the protrusion includes a first side surface and a second side surface that are arranged opposite to each other, the first side surface is arranged on a side surface of the main body away from the prism assembly, and the first side surface is connected to a side of the bottom surface of the through hole facing the prism assembly; the second side surface is arranged on a side surface of the first side surface away from the prism assembly, and the second side surface is connected to a side of the bottom surface of the through hole facing away from the prism assembly;

[0028] An orthographic projection area of ​​the first side surface on the second side surface is smaller than an area of ​​the second side surface.

[0029] In some embodiments, at least one of the first side surface and the second side surface of the protrusion is in any one of an ellipse, a circle, a triangle, a square, a trapezoid, a strip, and a hexagon.

[0030] In some embodiments, the top surface of the through hole is inclined, and the top surface of the through hole is disposed close to the first back plate portion on a side facing the prism assembly.

[0031] In some embodiments, the groove and the protrusion are interference fit.

[0032] In some embodiments, the through hole and the protrusion are interference fit.

[0033] In some embodiments, the back plate is made of metal, and the plastic frame is made of plastic.

[0034] In some embodiments, a light guide plate and a reflective sheet are provided between the prism assembly and the first back panel portion.

[0035] A second aspect of the present application is to provide a display device, the display device comprising the backlight module described in the first aspect, and further comprising a display substrate;

[0036] A light-shielding tape is arranged between the display substrate and the prism assembly, and the light-shielding tape is respectively arranged to abut against the display substrate and the adhesive frame.

[0037] In some embodiments, a sealing tape is provided on the outer side of the back plate, one end of the sealing tape is connected to the display substrate, and the other end of the sealing tape is connected to the back plate.

[0038] Beneficial technical effects of this application:

[0039] 1. The backlight module provided by the present application has good strength and can also reduce the deformation probability of the bottom of the back plate in the backlight module, which is beneficial to improve the support of the back plate;

[0040] 2. The display device provided in the present application has good display quality, for example, the probability of light leakage, grayscale 0 (L0), brightness or color unevenness (PS Mura) and the like is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0042] Figure 1 The schematic diagram of the structure of the display device of some embodiments of the present application is exemplarily shown;

[0043] Figure 2 The example shows Figure 1 A partial cross-sectional view along the AA direction;

[0044] Figure 3 The example shows Figure 2 Schematic diagram of the structure of the middle back plate;

[0045] Figure 4 The example shows Figure 2 Schematic diagram of the structure of the middle rubber frame;

[0046] Figure 5A , Figure 5B The example shows Figure 2 A structural schematic diagram of the protruding portion of the middle rubber frame;

[0047] Figure 5C and Figure 5D The example shows Figure 2 Two partial cross-sectional views along the BB direction;

[0048] Fig. 6A , Figure 6B The example shows Figure 2 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0049] Figure 6C The example shows Figure 2 Another partial cross-sectional view along the BB direction;

[0050] Fig. 7A , Figure 7B The example shows Figure 2 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0051] Figure 7C The example shows Figure 2 Another partial cross-sectional view along the BB direction;

[0052] Fig. 8A , Figure 8B The example shows Figure 2 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0053] Figure 8C The example shows Figure 2 Another partial cross-sectional view along the BB direction;

[0054] Fig. 9A , Fig. 9B The example shows Figure 2 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0055] Fig. 9C The example shows Figure 2 Another partial cross-sectional view along the BB direction;

[0056] Fig. 10A , Fig. 10B The example shows Figure 2 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0057] Fig. 10C The example shows Figure 2 Another partial cross-sectional view along the BB direction;

[0058] Fig.11 The example shows Figure 1 Another partial cross-sectional view along the AA direction;

[0059] Fig.12 The example shows Fig.11 Schematic diagram of the structure of the middle back plate;

[0060] Fig.13 The example shows Fig.11 Schematic diagram of the structure of the middle rubber frame;

[0061] Fig.14A , Fig. 14B The example shows Fig.11 A structural schematic diagram of the protruding portion of the middle rubber frame;

[0062] Fig. 14C and Fig.14D The example shows Fig.11 Two partial cross-sectional views along the BB direction;

[0063] Fig.15A , Fig. 15B The example shows Fig.11 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0064] Fig. 15C The example shows Fig.11 Another partial cross-sectional view along the BB direction;

[0065] Fig.16A , Fig. 16B The example shows Fig.11 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0066] Fig. 16C The example shows Fig.11 Another partial cross-sectional view along the BB direction;

[0067] Fig.17A , Fig. 17B The example shows Fig.11 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0068] Fig. 17C The example shows Fig.11 Another partial cross-sectional view along the BB direction;

[0069] Fig.18A , Fig.18B The example shows Fig.11 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0070] Fig. 18C The example shows Fig.11 Another partial cross-sectional view along the BB direction;

[0071] Fig.19A , Fig.19B The example shows Fig.11 Another structural schematic diagram of the protruding portion of the middle rubber frame;

[0072] Fig.19C The example shows Fig.11 Another partial cross-sectional view along the BB direction;

[0073] The reference numerals in the accompanying drawings represent the following:

[0074] 1000. Display device;

[0075] 100. Display substrate;

[0076] 110, upper polarizer; 120, color filter; 130, drive circuit substrate; 140, lower polarizer;

[0077] 200, backlight module; 210, back panel;

[0078] 210a, first back plate portion; 210b, second back plate portion; 211, groove; 212, bottom surface of the groove; 212a, side of the bottom surface facing the prism assembly; 212b, side of the bottom surface facing away from the prism assembly;

[0079] 213, through hole; 214, bottom surface of the through hole; 214a, side of the bottom surface facing the prism assembly; 214b, side of the bottom surface facing away from the prism assembly; 215, top surface of the through hole;

[0080] 220, plastic frame; 220a, main body; 220b, protruding portion; 221, first side surface; 222, second side surface; 223, third side surface;

[0081] 230, prism assembly; 231, upper diffuser; 232, prism sheet; 233, lower diffuser; 240, light guide plate; 250, reflector

[0082] 300, shading tape; 400, sealing tape. DETAILED DESCRIPTION

[0083] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. The embodiments in the present application can be implemented in a plurality of different forms. A person of ordinary skill in the art can easily understand the fact that the implementation and content can be transformed into various forms without departing from the purpose and scope of the present application. Therefore, the present application should not be interpreted as being limited to the contents recorded in the following embodiments. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0084] Various structural schematic diagrams according to embodiments of the present application are shown in the accompanying drawings. The proportions of the accompanying drawings can be used as a reference in the actual process, but are not limited thereto. For example: the width-to-length ratio of the channel, the thickness and spacing of each film layer, the width and spacing of each signal line can be adjusted according to actual needs. The number of pixels in the display substrate and the number of sub-pixels in each pixel are not limited to the numbers shown in the figures. The drawings described in this application are only structural schematic diagrams, and one method of the present application is not limited to the shapes or values ​​shown in the drawings.

[0085] In the context of the present application, when a layer / element is referred to as being "on" another layer / element, the layer / element may be directly on the other layer / element or an intervening layer / element may exist between them. In addition, if a layer / element is "on" another layer / element in one orientation, the layer / element may be "under" the other layer / element when the orientation is reversed.

[0086] In the description of the present application, ordinal numbers such as "first" and "second" are provided to avoid confusion among constituent elements rather than to limit the quantity.

[0087] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship, such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the purpose of facilitating the description of this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. The positional relationship of the constituent elements is appropriately changed according to the direction in which each constituent element is described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the situation.

[0088] In this specification, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] “A and / or B” includes the following two combinations: A only, B only, and a combination of A and B.

[0090] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0091] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0092] Display devices, such as communication terminals, game consoles, multimedia players, computers or imaging devices, usually include display devices capable of displaying images. These display devices include a display substrate (Panel) and a backlight module, and the backlight module includes a glue-iron integrated structure. The glue-iron integrated structure includes a back plate and a glue frame, the back plate is clamped on the outside of the glue frame, and the bearing surface of the glue frame supports the display panel. The glue-iron integrated structure has the advantages of small tolerance, narrow frame, and automated assembly, and is increasingly used in display devices, especially notebook computers.

[0093] When generating a glue-iron integrated structure, through holes are usually set on the back panel, such as setting a through hole on the bottom surface of the back panel, or setting a through hole at the intersection of the bottom surface and the side surface of the back panel. Then, the formed back panel is placed in the mold cavity, and molten plastic particles are injected into the back panel. The plastic particles will fill the through holes on the back panel. After the plastic particles are cooled and solidified, a glue frame is formed. The back panel and the glue frame are combined to form a glue-iron integrated structure.

[0094] However, the conventional through-hole design on the backplane makes it easy for the external force on the display panel to be transferred to the plastic frame during the thermal shock test or other mechanical tests, or even during actual use, and then transmitted to the bottom of the backplane by the plastic frame. The bottom of the backplane is also easily deformed by the edge impact force. The deformation of the backplane causes the flatness of the display panel to decrease, and ultimately affects the display effect of the display device, such as light leakage, grayscale 0 (L0), brightness or color unevenness (PS Mura), etc.

[0095] To solve one of the above technical problems, the present application discloses a backlight module and a display device. The present application enhances the strength of the back plate in the backlight module and reduces the deformation probability of the bottom of the back plate to improve the display effect of the display device.

[0096] The first aspect of the present application is to provide a backlight module 200, such as Figure 2 Indicates that the Figure 2 For Figure 1 The schematic diagram of the display device 1000 is obtained by sectioning along the AA direction. The backlight module 200 includes a back plate 210, a rubber frame 220 and a prism assembly 230. Specifically, the back plate of the present application serves as the main supporting structure in the backlight module, and it has high strength and stability. The rubber frame of the present application serves as the secondary supporting structure and the main protective frame structure in the backlight module, and it has the functions of providing structural support, protecting internal components, and preventing external impact and dust from entering. The prism assembly of the present application is an optical element made of a transparent material (such as glass or plastic), which has the advantage of optimizing light and is conducive to improving the brightness of the display device. The specific composition of the prism assembly of the present application is described in detail below.

[0097] like Figure 3 As shown, the back plate 210 includes a first back plate portion 210a and a second back plate portion 210b, and the first back plate portion 210a and the second back plate portion 210b are connected and bent; at the same time, a groove 211 is provided at one end of the second back plate portion 210b away from the first back plate portion 210a.

[0098] Combination Figure 2 and Figure 3 It can be known that the first back plate portion 210 a and the second back plate portion 210 b enclose a receiving space P, and the plastic frame 220 and the prism assembly 230 are located inside the receiving space P.

[0099] Further Figure 2 As shown in FIG. 1 , the prism assembly 230 is connected to the first back panel portion 210a. Figure 4 As shown in the figure, the plastic frame 220 includes a main body 220a and a protruding portion 220b connected to each other. Figure 2 and Figure 4 It can be seen that the main body 220a is arranged in the above-mentioned accommodating space P and respectively abuts against the above-mentioned first back panel portion 210a and the second back panel portion 210b. The above-mentioned protrusion 220b is arranged on a side surface of the above-mentioned main body 220a away from the above-mentioned prism assembly 230, and the above-mentioned protrusion 220b cooperates with the above-mentioned groove 211.

[0100] Further integration Figure 2 and Figure 3 It can be seen that the bottom surface 212 of the groove is tilted. Specifically, the side 212a of the bottom surface of the groove 211 facing the prism assembly is arranged away from the first back panel portion 210a, while the side 212b of the bottom surface of the groove 211 facing away from the prism assembly is arranged close to the first back panel portion 210a to realize the design mode of tilting the bottom surface 212 of the groove.

[0101] The present application sets the groove 211 at one end of the second back plate portion 210b away from the first back plate portion 210a, which is beneficial to reduce the deformation probability of the bottom of the back plate 210 in the backlight module 200. Furthermore, the present application adopts the shape of the protrusion 220b of the rubber frame 220 that matches the groove 211 to match the groove 211, which facilitates the connection between the groove 211 and the protrusion 220b to improve the support of the back plate 210.

[0102] In some embodiments, the present application specifically defines the inclination degree of the bottom surface 212 of the groove 211, combined with Figure 3 It can be seen that the distance between the side 212a of the bottom surface of the groove 211 facing the prism assembly and the first back plate portion 210a is h1; the distance between the side 212b of the bottom surface of the groove 211 facing away from the prism assembly and the first back plate portion 210a is h2; Figure 2Schematically: the side 212a of the bottom surface of the groove 211 facing the prism assembly is arranged away from the first back plate portion 210a, and the side 212b of the bottom surface of the groove 211 facing away from the prism assembly is arranged close to the first back plate portion 210a, so h1 is greater than h2, that is, h1 / h2 is greater than 1. The present application further selects h1 / h2 to be less than or equal to 1.7 to ensure that the bottom surface 212 of the groove supports the protrusion 220b of the rubber frame 220. At the same time, the present application discloses in these embodiments that h1 / h2 is any one of 1.05, 1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, 1.50, 1.55, 1.60, 1.65, 1.70 or any one of the values ​​in the range of any two of the above.

[0103] The present application selects the groove 211 with the above-mentioned design method to match the shape of the protrusion 220b of the plastic frame 220. This design method is conducive to enhancing the bonding force between the back plate 210 and the plastic frame 220. Specifically, even when the plastic frame 220 is subjected to tests such as cold and hot shocks, the deformation of the plastic frame 220 itself can be controlled, so the plastic frame 220 is not easy to fall off the back plate 210. In addition, the supporting performance of the back plate 210 can also be improved to improve the display effect of the display device.

[0104] In some embodiments, the present application further describes the plastic frame 220 that matches the groove 211. Figure 4 It can be known that the rubber frame 220 includes a main body 220a and a protruding portion 220b connected to each other, and the protruding portion 220b is located at one end of the main body 220a away from the first back plate portion 210a, and the protruding portion 220b includes a first side surface 221 and a second side surface 222 arranged opposite to each other, the first side surface 221 is arranged on a side surface of the main body 220a away from the prism assembly 230, and the first side surface 221 is connected to the bottom surface of the groove 211 facing the side 212a of the prism assembly; the second side surface 222 is arranged on a side surface of the first side surface 221 away from the prism assembly 230, and the second side surface 222 is connected to the other side 212b of the bottom surface of the groove 211 away from the prism assembly; the orthographic projection area of ​​the first side surface 221 on the second side surface 222 is smaller than the area of ​​the second side surface 222. The shape of the protrusion 220b of the plastic frame 220 here matches the shape of the above-mentioned groove 211. This design method is conducive to enhancing the bonding force between the back plate 210 and the plastic frame 220. Specifically, even when the plastic frame 220 is subjected to tests such as cold and hot shocks, the deformation of the plastic frame 220 itself is limited and it is not easy to fall off from the back plate 210.

[0105] This application is Figure 4 Based on the structure of the protruding portion 220b of the plastic frame 220, the structure is further described. FIG. 5A to FIG. 10C Indicate, combine Figure 5A and Figure 5B , Fig. 6A and Figure 6B , Fig. 7A and Figure 7B , Fig. 8A and Figure 8B , Fig. 9A and Fig. 9B , Fig. 10A and Fig. 10B It can be seen that the protrusion 220b includes a first side surface 221, a second side surface 222 and a third side surface 223, and the first side surface 221 and the second side surface 222 are arranged opposite to each other and are respectively connected to the third side surface 223, and the orthographic projection area of ​​the first side surface 221 on the second side surface 222 is smaller than the area of ​​the second side surface 222, so that the protrusion 220b and the groove 211 are connected and matched. Figure 2 It can be seen that the first side surface 221 of the protrusion 220b is arranged toward the prism assembly 230, and the second side surface 222 of the protrusion 220b is arranged away from the prism assembly 230, and the first side surface 221 of the protrusion 220b is connected to the bottom surface of the groove toward the side 212a of the prism assembly, and the second side surface 222 of the protrusion 220b is connected to the bottom surface of the groove away from the side 212b of the prism assembly, so that the protrusion 220b and the groove 211 can improve the support of the back plate and the rubber frame to other components in the display device on the basis of mutual cooperation.

[0106] Further integration Figure 5C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in the shape of a sector, where the sector includes a semi-ellipse; Figure 5D It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is also in the shape of a sector, where the sector includes a semicircle. Figure 6C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in a trapezoidal shape. Figure 7C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in the shape of a strip. Figure 8C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in a square shape. Fig. 9C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in a wedge shape. Fig. 10C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in the shape of a pentagon. Figure 5C , Figure 5D , Figure 6C, Figure 7C , Figure 8C , Fig. 9C and Fig. 10C The specific shape of at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is illustrated, and only the side shape of some protrusions is illustrated here. Other protrusions that meet the conditions of this application are also within the protection scope of this application and will not be described in detail in this application.

[0107] As described above, the present application describes in some embodiments that the protrusion 220b of the rubber frame 220 matches the shape of the groove 211, and the present application further discloses that the groove 211 is interference fit with the protrusion 220b. Specifically, the back panel 210 corresponding to the groove 211 is made of metal, and the material of the rubber frame 220 corresponding to the protrusion 220b is plastic. The two are an integrated structure of rubber and iron. As described above, the integrated structure of rubber and iron is not only convenient to manufacture, but also conducive to improving the bonding between the back panel and the rubber frame, thereby improving the support for other components in the display device to improve the display effect of the display device.

[0108] In some embodiments, the present application discloses another structural schematic diagram of the backlight module 200, such as Fig.11 Indicate that Fig.11 For Figure 1 The structure diagram of the display device 1000 is obtained by sectioning along the AA direction. The backlight module 200 includes a back plate 210, a plastic frame 220 and a prism assembly 230. The definitions and functions of the back plate 210, the plastic frame 220 and the prism assembly 230 are the same as those above, and are not described in detail in this application.

[0109] like Fig.12 As shown in the figure, the back plate 210 includes a first back plate portion 210a and a second back plate portion 210b, and the first back plate portion 210a and the second back plate portion 210b are connected and bent; at the same time, a through hole 213 is provided on the second back plate portion 210b, and the opening direction of the through hole 213 is parallel to the thickness direction of the second back plate portion 210b. Fig.11 It can be known that the thickness of the second back plate portion 210 b is perpendicular to the extension direction of the first back plate portion 210 a , that is, the opening direction of the through hole 213 is arranged toward the prism assembly 230 .

[0110] Combination Fig.11 and Fig.12 It can be known that the first back plate portion 210 a and the second back plate portion 210 b enclose a receiving space P, and the plastic frame 220 and the prism assembly 230 are located inside the receiving space P.

[0111] Further Fig.11 As shown in FIG. 1 , the prism assembly 230 is connected to the first back panel portion 210a. Fig.13 As shown in the figure, the plastic frame 220 includes a main body 220a and a protruding portion 220b connected to each other. Fig.11 and Fig.13 It can be seen that the main body 220a is arranged in the above-mentioned accommodating space P and respectively abuts against the above-mentioned first back panel portion 210a and the second back panel portion 210b. The above-mentioned protrusion 220b is arranged on a side surface of the above-mentioned main body 220a away from the above-mentioned prism assembly 230, and the above-mentioned protrusion 220b cooperates with the above-mentioned through hole 213.

[0112] Further integration Fig.11 and Fig.12 Specifically, the bottom surface 214 of the through hole 213 is arranged at an angle, and the side 214a of the bottom surface of the through hole 213 facing the prism assembly is arranged away from the first back plate portion 210a, while the side 214b of the bottom surface of the through hole 213 facing away from the prism assembly is arranged close to the first back plate portion 210a.

[0113] The present application sets the through hole 213 on the second back plate portion 210b so that there is a certain distance between the through hole 213 and the second back plate portion 210b, so that the through hole 213 is set away from the bottom of the back plate (the second back plate portion 210b), which is conducive to reducing the deformation probability of the second back plate portion 210b even if the second back plate portion 210b is impacted by external force. And the present application adopts the through hole 213 with the above structure, and further, the shape of the protrusion 220b of the plastic frame 220 matched with the through hole 213 matches the through hole 213, which facilitates the connection between the through hole 213 and the protrusion 220b to improve the support of the back plate 210.

[0114] In some embodiments, the present application specifically defines the inclination degree of the bottom surface 214 of the through hole, combined with Fig.12 It can be seen that the distance between the side 214a of the bottom surface 214 of the through hole facing the prism assembly and the first back plate portion 210a is h1'; the distance between the side 214b of the bottom surface 214 of the through hole away from the prism assembly and the first back plate portion 210a is h2'; according to Fig.11Schematically: the side 214a of the bottom surface of the through hole 213 facing the prism assembly is arranged away from the first back plate portion 210a, and the side 214b of the bottom surface of the through hole 213 facing away from the prism assembly is arranged close to the first back plate portion 210a, so h1' is greater than h2', that is, h1' / h2' is greater than 1. The present application further selects h1' / h2' to be less than or equal to 1.7 to ensure that the bottom surface 214 of the through hole supports the protrusion 220b of the rubber frame 220. At the same time, the present application discloses in these embodiments that h1' / h2' is any one of 1.05, 1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, 1.50, 1.55, 1.60, 1.65, 1.70 or any one of the values ​​in the range of any two of the above.

[0115] The present application selects the through hole 213 with the above-mentioned design method to match the shape of the protrusion 220b of the plastic frame 220. This design method is conducive to enhancing the bonding force between the back plate 210 and the plastic frame 220. Specifically, even when the plastic frame 220 is subjected to tests such as cold and hot shocks, the deformation of the plastic frame 220 itself is limited and it is not easy to fall off from the back plate 210.

[0116] In some embodiments, the through hole 213 on the back panel 210 includes a top surface 215 of the through hole, and the top surface 215 of the through hole is inclined. Furthermore, the top surface 215 of the through hole is disposed close to the first back panel portion 210a on a side facing the prism assembly 230, while the top surface 215 of the through hole is disposed away from the first back panel portion 210a on a side facing away from the prism assembly 230.

[0117] This design method is beneficial to further enhance the bonding force between the back plate 210 and the plastic frame 220 , and further reduce the probability of the plastic frame 220 and the back plate 210 falling off.

[0118] In some embodiments, the present application further describes the plastic frame 220 that matches the through hole 213. Fig.13It can be known that the rubber frame 220 includes a main body 220a and a protruding portion 220b connected to each other, and the protruding portion 220b is located at one end of the main body 220a away from the first back plate portion 210a, and the protruding portion 220b includes a first side surface 221 and a second side surface 222 arranged opposite to each other, the first side surface 221 is arranged on a side surface of the main body 220a away from the prism assembly 230, and the first side surface 221 is connected to a side 214a of the bottom surface of the through hole 213 facing the prism assembly; the second side surface 222 is arranged on a side surface of the first side surface 221 away from the prism assembly 230, and the second side surface 222 is connected to the other side 214b of the bottom surface of the through hole 213 away from the prism assembly; the orthographic projection area of ​​the first side surface 221 on the second side surface 222 is smaller than the area of ​​the second side surface 222.

[0119] This application is Fig.13 Based on the structure of the protruding portion 220b of the plastic frame 220, the structure is further described as follows. FIG. 14A to FIG. 19C Indicate, combine Fig.14A and Fig. 14B , Fig.15A and Fig. 15B , Fig.16A and Fig. 16B , Fig.17A and Fig. 17B , Fig.18A and Fig.18B , Fig.19A and Fig.19B It can be seen that the protrusion 220b includes a first side surface 221, a second side surface 222 and a third side surface 223, and the first side surface 221 and the second side surface 222 are arranged opposite to each other and are respectively connected to the third side surface 223, and the orthographic projection area of ​​the first side surface 221 on the second side surface 222 is smaller than the area of ​​the second side surface 222, so that the protrusion 220b and the through hole 213 are connected and matched. Fig.11 It can be seen that the first side surface 221 of the protrusion 220b is arranged toward the prism assembly 230, and the second side surface 222 of the protrusion 220b is arranged away from the prism assembly 230, and the first side surface 221 of the protrusion 220b is connected to the bottom surface of the through hole toward the side 214a of the prism assembly, and the second side surface 222 of the protrusion 220b is connected to the bottom surface of the through hole away from the side 214b of the prism assembly, so that the protrusion 220b and the through hole 213 can cooperate with each other to improve the support for other components in the display device.

[0120] Further integration Fig. 14C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is elliptical in shape. Fig.14DIt can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is circular in shape. Fig. 15C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in the shape of a triangle. Fig. 16C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in the shape of a strip. Fig. 17C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in a square shape. Fig. 18C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in a trapezoidal shape. Fig.19C It can be seen that at least one of the first side surface 221 and the second side surface 222 of the protrusion 220b is in the shape of a hexagon. Fig. 14C , Fig.14D , Fig. 15C , Fig. 16C , Fig. 17C , Fig. 18C and Fig.19C Only the side shapes of some protrusions are illustrated. Other protrusions that meet the conditions of this application are also within the protection scope of this application and will not be described in detail in this application.

[0121] As described above, the present application describes in some embodiments that the protrusion 220b of the rubber frame 220 matches the shape of the through hole 213, and the present application further discloses that the through hole 213 and the protrusion 220b are interference fit. Specifically, the back plate 210 corresponding to the through hole 213 is made of metal, and the material of the rubber frame 220 corresponding to the protrusion 220b is plastic, and the two are an integrated structure of rubber and iron.

[0122] The present application mainly describes the shape and matching connection method of the back panel 210 and the rubber frame 220 above. This design method ensures that the backlight module has good strength itself, and it is also convenient to reduce the deformation probability of the bottom of the back panel in the backlight module, which is beneficial to improve the support of the back panel; and the display device provided by the present application has good display quality, such as the probability of light leakage, grayscale of 0 (L0), brightness or color unevenness (PS Mura), etc. is low.

[0123] The present application also discloses in some embodiments that a light guide plate 240 and a reflective sheet 250 are disposed between the prism assembly 230 and the first back panel portion 210a, and the present application Figure 2 and Fig.11 It is shown that the light guide plate 240 and the reflective sheet 250 are stacked together, and the prism assembly 230 is connected to the first back panel portion 210 a through the light guide plate 240 and the reflective sheet 250 .

[0124] The present application also discloses in some embodiments that the prism assembly 230 includes an upper diffuser 231, a prism sheet 232 and a lower diffuser 233 stacked together. The prism assembly 230 of the present application may also include other conventional components in the field, which are not elaborated in detail in the present application.

[0125] The second aspect of the present application is to disclose a display device 1000, which includes the above-mentioned backlight module 200 and a display substrate 100; a light-shielding tape 300 is provided between the display substrate 100 and the above-mentioned prism assembly 230, and the light-shielding tape 300 is respectively disposed against the above-mentioned display substrate 100 and the frame 220.

[0126] The light-shielding tape 300 of the present application not only has the characteristics of shielding light and preventing light leakage, but also has the function of fixing the prism assembly 230 .

[0127] In some embodiments, a sealing tape 400 is disposed on the outer side of the back plate 210 , one end of the sealing tape 400 is connected to the display substrate 100 , and the other end of the sealing tape is connected to the back plate 210 .

[0128] The sealing tape 400 of the present application is a key component in the display device to ensure the performance and reliability of the display panel. It can conveniently provide better waterproof and dustproof effects, which is beneficial to prolonging the service life of the display device.

[0129] In some embodiments, the display substrate 100 includes an upper polarizer 110 , a color filter 120 , a driving circuit substrate 130 , and a lower polarizer 140 which are stacked together.

[0130] The composition and structure of each component in the display substrate 100 of the present application remain the same as those in the prior art, and will not be elaborated in detail in the present application.

[0131] In summary, the design method provided in the present application improves the display effect of the display device by reducing the deformation probability of the bottom of the back plate in the backlight module.

[0132] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0133] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A backlight module, characterized in that: Including back panel; The back plate comprises a first back plate portion and a second back plate portion, wherein the first back plate portion is connected to the second back plate portion and is bent; a groove is provided at one end of the second back plate portion away from the first back plate portion; The first back plate portion and the second back plate portion enclose a receiving space, and a prism assembly and a rubber frame are arranged in the receiving space; The prism assembly is connected to the first back panel portion; The rubber frame includes a main body and a protruding portion connected to each other, the main body is arranged in the accommodating space and respectively abuts against the first back plate portion and the second back plate portion, the protruding portion is arranged on a side surface of the main body away from the prism assembly, and the protruding portion cooperates with the groove; The bottom surface of the groove is inclined, and the bottom surface of the groove is arranged toward a side of the prism assembly away from the first back plate portion.

2. The backlight module according to claim 1, characterized in that: The distance between the bottom surface of the groove facing the prism assembly and the first back plate portion is h1; The distance between the bottom surface of the groove facing away from the prism assembly and the first back plate portion is h2; 1<h1 / h2≤1.

7.

3. The backlight module according to any one of claims 1 to 2, characterized in that: The protrusion includes a first side surface and a second side surface that are oppositely arranged, the first side surface is arranged on a side surface of the main body that is away from the prism assembly, and the first side surface is connected to a side of the bottom surface of the groove that faces the prism assembly; The second side surface is disposed on a side surface of the first side surface facing away from the prism assembly, and the second side surface is connected to a side of the bottom surface of the groove facing away from the prism assembly; An orthographic projection area of ​​the first side surface on the second side surface is smaller than an area of ​​the second side surface.

4. The backlight module according to claim 3, characterized in that: At least one of the first side surface and the second side surface of the protrusion has a shape of any one of a sector, a trapezoid, a strip, a square, a wedge, and a pentagon.

5. A backlight module, characterized in that: Including back panel; The back plate includes a first back plate portion and a second back plate portion, wherein the first back plate portion is connected to the second back plate portion and is bent; a through hole is provided on the second back plate portion, and an opening direction of the through hole is parallel to a thickness direction of the second back plate portion; The first back plate portion and the second back plate portion enclose a receiving space, and a prism assembly and a rubber frame are arranged in the receiving space; The prism assembly is connected to the first back panel portion; The rubber frame includes a main body and a protruding portion connected to each other, the main body is arranged in the accommodating space and respectively abuts against the first back plate portion and the second back plate portion, the protruding portion is arranged on a side surface of the main body away from the prism assembly, and the protruding portion cooperates with the through hole; The bottom surface of the through hole is arranged obliquely, and the bottom surface of the through hole is arranged at a side facing the prism assembly and away from the first back plate portion.

6. The backlight module according to claim 5, characterized in that: The distance between the bottom surface of the through hole facing the prism assembly and the first back plate portion is h1'; The distance between the bottom surface of the through hole facing away from the prism assembly and the first back plate portion is h2'; 1<h1' / h2'≤1.

7.

7. The backlight module according to any one of claims 5 to 6, characterized in that: The protrusion includes a first side surface and a second side surface that are oppositely arranged, the first side surface is arranged on a side surface of the main body that is away from the prism assembly, and the first side surface is connected to a side of the bottom surface of the through hole that faces the prism assembly; The second side surface is disposed on a side surface of the first side surface facing away from the prism assembly, and the second side surface is connected to a side of the bottom surface of the through hole facing away from the prism assembly; An orthographic projection area of ​​the first side surface on the second side surface is smaller than an area of ​​the second side surface.

8. The backlight module according to claim 7, characterized in that: At least one of the first side surface and the second side surface of the protrusion has a shape of any one of an ellipse, a circle, a triangle, a square, a trapezoid, a strip, and a hexagon.

9. The backlight module according to any one of claims 5 to 6, characterized in that: The top surface of the through hole is arranged inclined, and the top surface of the through hole is arranged toward one side of the prism assembly and close to the first back plate portion.

10. The backlight module according to claim 1 or 5, characterized in that: The groove and the protrusion are interference fit; or; The through hole is interference fit with the protruding portion.

11. The backlight module according to claim 1 or 5, characterized in that: The back plate is made of metal, and the plastic frame is made of plastic.

12. The backlight module according to claim 1 or 5, characterized in that: A light guide plate and a reflective sheet are disposed between the prism assembly and the first back panel portion.

13. A display device, characterized in that: A backlight module comprising any one of claims 1 to 12, further comprising a display substrate; A light-shielding tape is arranged between the display substrate and the prism assembly, and the light-shielding tape is respectively arranged to abut against the display substrate and the adhesive frame.

14. The display device according to claim 13, characterized in that: A sealing tape is disposed on the outer side of the back plate, one end of the sealing tape is connected to the display substrate, and the other end of the sealing tape is connected to the back plate.

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