Display device

Abstract

The utility model relates to the technical field of display equipment, and discloses a display device. The display device comprises a backlight module and a middle frame, the backlight module comprises a back plate, a light guide plate and a light bar, the back plate comprises a bottom plate and a first side plate which are vertically arranged, a plurality of holes are formed in the first side plate, the light guide plate is arranged on the bottom plate, the light bar comprises a substrate and a plurality of lamp beads arranged on the substrate, and the substrate is installed on the side, away from the light guide plate, of the first side plate. Each lamp bead is correspondingly provided with one opening in a penetrating manner; the middle frame comprises a transverse plate and a vertical plate which are connected, the transverse plate is arranged on the upper side of the back plate, the vertical plate is located on the outer side of the base plate, one of the vertical plate and the base plate is provided with a buckle, the other one is provided with a clamping hole, and the buckle is matched with the clamping hole in a clamping mode. According to the display device, under the condition that the narrow frame design can be met, the distance between the light-emitting faces of the lamp beads and the effective display area of the display panel is increased, the A / P value is increased, and the display grade is also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display equipment technical field especially relates to a display device. BACKGROUND

[0002] Liquid crystal display device has the advantages such as low operating voltage, light weight, small size, and is widely used in household appliances, automobile and other fields.

[0003] Figure 1 It is the structural diagram of display device provided by prior art; Figure 2 It is the schematic diagram that lamp strip cooperates with backplate provided by prior art;As Figure 1 And Figure 2 As shown in the figure, display device includes backlight module 10', middle frame 20' and display panel 30', wherein backlight module 10' includes backplate 11', lamp strip 12', light guide plate 13' and optical film 14', wherein backplate 11' includes bottom plate 111' and the first side plate 112' surrounded in the four sides of bottom plate 111', light guide plate 13' and optical film 14' are sequentially stacked on bottom plate 111'. Lamp strip 12' includes substrate 121' and multiple lamp beads 122' spaced apart on substrate 121', substrate 121' is adhered to the inner side of first side plate 112', and each lamp bead 122' is opposite to light guide plate 13'. Middle frame 20' includes horizontal plate 21' and vertical plate 22', wherein horizontal plate 21' is supported on the upside of backplate 11', vertical plate 22' is surrounded on the outside of first side plate 112' and is connected with backplate 11', and liquid crystal display panel 30' is overlapped on the horizontal plate 21' of middle frame 20'.

[0004] At present, vehicle-mounted display device requires narrow frame setting, and the horizontal plate 21' of the corresponding middle frame 20' is narrowed, which further leads to the distance (denoted as A) between the light emitting surface of lamp bead 122' and the effective display area 31' of display device being smaller, and in the case that the number of lamp beads 122' is unchanged, the distance P between adjacent lamp beads 122' is unchanged, so that the A / P value of display device with narrow frame will be smaller, thereby causing the optical taste to be worse. Figure 3 It is the schematic diagram that backplate cooperates with flexible circuit board provided by prior art;As Figure 3 As shown in the figure, the prior art needs to set through hole 113' on backplate 11', and the flexible circuit board 123' of lamp strip 12' is stretched out to the outside of backplate 11' from through hole 113' to be connected with the structure outside backplate 11', however, during the cold and hot impact experiment of display device, the flexible circuit board 123' will be positionally dislocated relative to the side wall of through hole, thereby causing the damage or fracture of flexible circuit board 123'.

[0005] Therefore, it is urgent to need a display device to solve the above technical problems. UTILITY MODEL CONTENT

[0006] The utility model discloses a display device, under the condition of being able to satisfy narrow frame design, the distance of the light emitting surface of lamp pearl and the effective display area of real panel is increased, the A / P value is improved, and the display taste is improved.

[0007] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0008] Display device, comprising:

[0009] Backlight module, including backplate, light guide plate and lamp strip, the backplate includes the bottom plate and the first side plate of vertical arrangement, a plurality of openings are arranged on the first side plate, the light guide plate is arranged on the bottom plate, the lamp strip includes the substrate and a plurality of lamp pearls arranged on the substrate, the substrate is installed on the side of the first side plate away from the light guide plate, and each lamp pearl is correspondingly provided with an opening.

[0010] Middle frame, including the horizontal plate and the vertical plate that are connected, the horizontal plate is arranged on the upside of the backplate, the vertical plate is located the outside of the substrate, one of the vertical plate and the substrate is provided with the buckle, and the other is provided with the card hole, and the buckle is matched with the card hole.

[0011] As an optional scheme, the substrate and the backplate are connected by connecting adhesive tape.

[0012] As an optional scheme, the connecting adhesive tape is double-sided adhesive tape and is clamped between the substrate and the first side plate, and a first avoiding hole for the lamp pearl is arranged on the double-sided adhesive tape.

[0013] As an optional scheme, at least one side of the connecting adhesive tape has adhesion, the first end of the connecting adhesive tape is attached to the side of the first side plate towards the light guide plate, and the second end of the connecting adhesive tape is wound through the top of the first side plate, the side of the substrate away from the first side plate and is attached to the lower side of the bottom plate.

[0014] As an optional scheme, the first end of the connecting adhesive tape includes a plurality of spaced apart extension parts, the extension part extends into the adjacent lamp pearl, at least the extension part is double-sided adhesive tape, and a release film is attached to the side of the extension part away from the first side plate.

[0015] As an optional scheme, a mark line is arranged on the connecting adhesive tape, and the mark line is configured to mark the attachment position of the substrate.

[0016] As an optional scheme, a third avoiding hole is arranged on the connecting adhesive tape, and the third avoiding hole is configured to avoid the buckle.

[0017] As an optional solution, the connecting tape is a light-proof tape.

[0018] As an optional solution, the backlight module further comprises a light-proof tape, one end of the light-proof tape is attached to the side of the substrate away from the first side plate, and the other end of the light-proof tape extends to the lower side of the bottom plate and is bonded to the lower side of the bottom plate.

[0019] As an optional solution, the back plate further comprises two second side plates, both of the second side plates are connected to the bottom plate and are respectively located at both ends of the first side plate along the first direction, and both ends of the light-proof tape along the first direction respectively extend from the substrate to the second side plate at the corresponding end and are attached to the second side plate.

[0020] As an optional solution, the light-proof tape is provided with a second avoiding hole for avoiding the buckle.

[0021] The display device has the following beneficial effects:

[0022] The display device has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of a display device provided by the prior art;

[0024] Figure 2 is a structural schematic view of a lamp strip and a back plate provided by the prior art;

[0025] Figure 3 is a schematic view of a position where a back plate and a flexible circuit board of a lamp strip are matched provided by the prior art;

[0026] Figure 4 is a structural schematic view of a display device provided by an embodiment of the present application;

[0027] Figure 5is a structural schematic view of the back plate and the light bar provided by the embodiment one of the utility model;

[0028] Figure 6 is a partial structural schematic view of the display device provided by the embodiment one of the utility model;

[0029] Figure 7 is a structural schematic view of the connecting adhesive tape provided by the embodiment one of the utility model;

[0030] Figure 8 is a schematic view after the light bar is clamped with the middle frame provided by the embodiment one of the utility model;

[0031] Figure 9 is a schematic view after the light shielding adhesive tape is coated on the substrate provided by the embodiment one of the utility model;

[0032] Figure 10 is a plane expansion view of the light shielding adhesive tape provided by the embodiment one of the utility model;

[0033] Figure 11 is a structural schematic view of the display device provided by the embodiment two of the utility model;

[0034] Figure 12 is a plane expansion view of the connecting adhesive tape provided by the embodiment two of the utility model;

[0035] Figure 13 is a schematic view of the connecting adhesive tape with the release film pasted provided by the embodiment two of the utility model.

[0036] In the figure,

[0037] 10', backlight module; 11', back plate; 111', bottom plate; 112', side plate; 113', through hole; 12', light bar; 121', substrate; 122', lamp bead; 123', flexible circuit board; 13', light guide plate; 14', optical film piece; 20', middle frame; 21', horizontal plate; 22', vertical plate; 30', display panel; 31', effective display area;

[0038] 10, backlight module; 11, back plate; 111, bottom plate; 112, first side plate; 1121, opening; 113, second side plate; 12, light bar; 121, substrate; 122, lamp bead; 123, flexible circuit board; 124, buckle; 13, light guide plate; 14, optical film piece;

[0039] 15, connecting adhesive tape; 151, first avoiding hole; 152, first end; 153, second end; 154, extension; 155, mark line; 156, third avoiding hole; 16, light shielding adhesive tape; 161, first pasting part; 162, second pasting part; 163, third pasting part; 164, second avoiding hole; 17, release film;

[0040] 20, middle frame; 21, horizontal plate; 22, vertical plate; 221, card hole;

[0041] 30, display panel; 31, effective display area;

[0042] 40, front frame. DETAILED DESCRIPTION

[0043] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0044] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0045] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0047] The embodiment provides a display device, and the display device can be a liquid crystal display device. Figure 4 is a structural schematic diagram of the display device provided by the embodiment, asFigure 4 As shown, the display device includes a backlight module 10, a mid-frame 20, a display panel 30, and a front frame 40. The backlight module 10 provides a light source for the display panel 30. The mid-frame 20 is supported on the backlight module 10, and the display panel 30 is supported on the mid-frame 20. The front frame 40 is L-shaped, with one end covering the edge of the display panel 30 and the other end covering the side of the mid-frame 20. It should be noted that the area in the display panel 30 containing the liquid crystal is the effective display area 31.

[0048] Figure 5 This is a schematic diagram of the structure of the backplate and light strip provided in this embodiment. Figure 6 This is a partial structural schematic diagram of the display device provided in this embodiment, as shown below. Figures 4-6 As shown, the backlight module 10 includes a backplate 11, a light strip 12, a light guide plate 13, and an optical film 14. The backplate 11 includes a base plate 111, a first side plate 112, and a second side plate 113. The first side plate 112 and the second side plate 113 are disposed on one side of the base plate 111 and are both perpendicular to the base plate 111. The second side plate 113 is disposed at both ends of the first side plate 112 along a first direction, so the backplate 11 is constructed as a box-shaped structure with an opening at the top. The light guide plate 13 and the optical film 14 are stacked sequentially on the base plate 111 and housed within the box-shaped structure formed by the backplate 11. One end face of the light guide plate 13 is disposed opposite to the first side plate 112. The first side plate 112 has multiple openings 1121. The light strip 12 includes a substrate 121, multiple LED beads 122, and a flexible circuit board 123. The multiple LED beads 122 are spaced apart on the substrate 121. One end of the flexible circuit board 123 is connected to the substrate 121, and the other end is configured to connect to other electrical components of the display device. The substrate 121 is installed on the side of the first side plate 112 away from the light guide plate 13 (i.e., the outer side of the base plate 111), and each LED bead 122 has a corresponding opening 1121.

[0049] The display device of the embodiment can ensure that the light emitted by the lamp beads 122 can irradiate the light guide plate 13 and reach the display panel 30 through the light guide plate 13, and under the condition that the second direction size is constant (for example, narrow frame), the distance between the entire lamp strip 12 and the display panel 30 is equivalent to being pulled away, thereby increasing the distance A between the light emitting surface of the lamp beads 122 and the effective display area 31 of the display panel 30, and when the distance P between the adjacent lamp beads 122 is constant, a large enough A / P value can be ensured to ensure good display quality. The substrate 121 is arranged outside the back plate 11, so the flexible circuit board 123 connected with the substrate 121 can directly extend to the lower side of the bottom plate 111, and does not need to pass through the back plate 11, so as not to be damaged by mutual movement with the back plate 11 during the cold and hot impact test. In addition, arranging the substrate 121 outside the back plate 11 can also improve the heat dissipation effect of the lamp strip 12, thereby avoiding the problems of reduced service life and poor display effect caused by high temperature near the lamp strip 12.

[0050] As shown in Figure 5 , the substrate 121 extends along the first direction, and a plurality of lamp beads 122 are arranged on the substrate 121 along the first direction. A plurality of holes 1121 on the first side plate 112 are also arranged along the first direction, and the number of holes 1121 is the same as the number of lamp beads 122. It can be understood that under the condition of ensuring that the lamp beads 122 can pass in, the smaller the size of the hole 1121, the higher the strength of the first side plate 112, and the lower the risk of light leakage.

[0051] As shown in Figure 4 , the substrate 121 and the back plate 11 are connected by the connecting adhesive tape 15. The adhesive tape connection method is not only simple to operate and low in cost, but also does not occupy too much space inside the display device, thereby being beneficial to the design of narrow frame. In the embodiment, the connecting adhesive tape 15 is double-sided tape, which is clamped between the substrate 121 and the first side plate 112, so as to adhesively fix the substrate 121 and the first side plate 112, thereby realizing the fixation of the entire lamp strip 12.

[0052] Figure 7 is a schematic view of the adhesive tape provided in the embodiment, as shown in Figure 7 , the connecting adhesive tape 15 is an integral strip structure, thereby improving the efficiency of the adhesive operation of the lamp strip 12 and the first side plate 112. In the embodiment, the connecting adhesive tape 15 is provided with a first avoiding hole 151 for the lamp beads 122 to pass through, so that under the condition of not interfering with the lamp beads 122, the substrate 121 and the first side plate 112 have a large enough adhesive area, thereby ensuring the reliability of the connection between the lamp strip 12 and the first side plate 112.

[0053] Figure 8 is a schematic view of the lamp strip and the middle frame after cooperation provided by the embodiment. As shown in Figure 4 , Figure 5 and Figure 8 , the middle frame 20 comprises a horizontal plate 21 and a vertical plate 22 connected with each other, the horizontal plate 21 is parallel to the bottom plate 111 and is arranged on the upper side of the back plate 11, the edge of the display panel 30 is supported on the horizontal plate 21, and the vertical plate 22 is perpendicular to the horizontal plate 21 and is located outside the base plate 121. One of the vertical plate 22 and the base plate 121 is provided with a buckle 124, and the other is provided with a clamping hole 221, and the buckle 124 and the clamping hole 221 are clamped and matched. In this way, reliable connection between the middle frame 20 and the backlight module 10 is achieved, and the firmness of the entire display device structure is ensured. In the embodiment, the buckle 124 is arranged on the base plate 121, and the clamping hole 221 is arranged on the vertical plate 22 of the middle frame 20. In other embodiments, the buckle 124 can be arranged on the middle frame 20, and the clamping hole 221 can be arranged on the base plate 121. Alternatively, the number of buckles 124 and clamping holes 221 corresponds, and one group, two groups or multiple groups can be provided, which can be flexibly arranged as needed, which is not limited here.

[0054] The base plate 121 of the lamp strip 12 is arranged outside the back plate 11, which may cause light leakage. In this regard, as shown in Figure 8 , the backlight module 10 further comprises a light shielding tape 16, one end of the light shielding tape 16 is attached to the side of the base plate 121 away from the connecting tape 15, and the other end extends to the lower side of the bottom plate 111 and is bonded with the bottom plate 111. In this way, the light shielding tape 16 seals the gap between the base plate 121 and the lower side of the first side plate 112, thereby avoiding the problem of light leakage of the backlight module 10 in the gap.

[0055] Figure 9 is a structural schematic view of the base plate after being covered by the light shielding tape, Figure 10 is a planar development view of the light shielding tape, as shown in Figure 9 and Figure 10 , the two ends of the light shielding tape 16 in the first direction respectively extend from the base plate 121 to the second side plate 113 corresponding to the end and are attached to the second side plate 113. In this way, the light shielding tape 16 simultaneously seals the gap between the base plate 121 and the first side plate 112 at both ends in the first direction, thereby completely surrounding the gap that may leak light and avoiding the influence of light leakage on the display effect of the display device.

[0056] as shown in Figure 9 and Figure 10As shown, the light shielding tape 16 is provided with a second avoiding hole 164 for avoiding the buckle 124, so as to ensure that the buckle 124 on the substrate 121 can be smoothly buckled with the buckle 124 on the middle frame 20. It can be understood that the position and number of the second avoiding hole 164 correspond to the position and number of the buckle 124. Specifically, in the embodiment, the light shielding tape 16 includes a first adhesive part 161, a second adhesive part 162 and a third adhesive part 163, wherein the first adhesive part 161 is attached to the side of the substrate 121 away from the first side plate 112, and the second avoiding hole 164 is arranged on the first adhesive part 161. The second adhesive part 162 is connected with the first adhesive part 161, and is folded along the dashed line in Figure 10 and attached to the lower side of the bottom plate 111. The two ends of the first adhesive part 161 are provided with the third adhesive part 163, respectively, which are connected with the second side plate 113 after being folded along the corresponding dashed line, and as shown in Figure 9 , the lower end of the third adhesive part 163 is connected with the second adhesive part 162.

[0057] Embodiment two

[0058] The display device provided in the embodiment has the same position relationship between the light bar 12 and the back plate 11 and the same cooperation mode between the light bar 12 and the middle frame 20 as in the first embodiment, and the same parts will not be described here. The difference is mainly in the adhesive mode between the light bar 12 and the back plate 11, which is as follows:

[0059] Figure 11 is a structural schematic diagram of the display device provided in the embodiment, as shown in Figure 11 , the connecting tape 15 has adhesion on at least one side, and the first end 152 of the connecting tape 15 is attached to the side of the first side plate 112 facing the light guide plate 13, and the second end 153 is wound upward through the top of the first side plate 112, then downward through the side of the substrate 121 away from the first side plate 112, and finally inwardly folded and attached to the lower side of the bottom plate 111. Compared with the adhesive mode of the first embodiment, the adhesive tape can tightly clamp the light bar 12, so as to ensure that the substrate 121 is fully attached to the first side plate 112, thereby improving the reliability of the connection between the light bar 12 and the back plate 11, and facilitating the better conduction of the heat generated by the light bar 12.

[0060] Figure 12 is a planar development diagram of the adhesive tape provided in the embodiment, as shown in Figure 11 and Figure 12 , the first end 152 of the connecting tape 15 includes a plurality of spaced apart extension parts 154, and the extension part 154 extends into the adjacent lamp beads 122. In this way, under the premise of avoiding the lamp beads 122, the connecting tape 15 and the first side plate 112 have a large enough adhesive area, thereby improving the reliability of the adhesion.

[0061] As shown in Figure 12 , the connecting tape 15 is provided with a third avoiding hole 156, which is configured to avoid the buckle 124, so as to ensure that the buckle 124 on the substrate 121 is successfully buckled with the buckle 124 on the middle frame 20. The third avoiding hole 156 is arranged on the second end 153. It can be understood that the number and arrangement position of the third avoiding hole 156 correspond to the number and position of the buckle 124.

[0062] As shown in Figure 12 , the connecting tape 15 is provided with a mark line 155, which is configured to mark the pasting position of the substrate 121. When assembling the backlight module 10, first, the lamp strip 12 is pasted on the connecting tape 15 according to the mark line 155 on the connecting tape 15; then, the substrate 121 of the lamp strip 12 is pasted with the outer side of the first side plate 112, and the lamp beads 122 are arranged in the corresponding holes 1121; then, the first end 152 of the connecting tape 15 is folded, so that the first end 152 is pasted on the first side plate 112, and the second end 153 of the connecting tape 15 is folded, so that the part of the second end 153 away from the first end 152 is pasted with the bottom plate 111.

[0063] Because the number of the lamp beads 122 is large, the number of the extension parts 154 of the first end 152 is also large, so that the operation is not convenient when the first end 152 is folded. Figure 13 is a schematic view of the connecting tape provided by the embodiment and pasted with a release film, as shown in Figure 13 , at least the extension part 154 is double-sided adhesive, and the side of the extension part 154 away from the first side plate 112 is pasted with the release film 17. Therefore, when the first end 152 of the connecting tape 15 is folded, the release film 17 can be operated to fold multiple extension parts 154 at the same time, thereby greatly improving the convenience of operation. After the first end 152 of the connecting tape 15 is pasted with the inner side of the first side plate 112, the release film 17 is removed. In the embodiment, the entire first end 152 of the connecting tape 15 is arranged as double-sided adhesive and pasted with the release film 17, so as to ensure the convenience of folding the first end 152. Of course, in other embodiments, only the extension part 154 can be arranged as double-sided adhesive and pasted with the release film 17.

[0064] Optionally, the connecting tape 15 is a light-blocking tape. In this way, the connecting tape 15 not only fixes the lamp strip 12, but also prevents the problem of light leakage between the substrate 121 and the lower side of the first side plate 112, thereby reducing the number of parts of the display device, reducing the manufacturing cost of the display device, and improving the assembly efficiency of the display device.

[0065] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For the ordinary skilled in the art, according to the idea of the present application, the specific implementation modes and application ranges will have changes, and the content of the specification should not be understood as limiting the present application. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A display device, characterized by The application relates to a backlight module (10) comprising a back plate (11), a light guide plate (13) and a lamp strip (12), the back plate (11) comprising a bottom plate (111) and a first side plate (112) arranged vertically, a plurality of openings (1121) being arranged on the first side plate (112), the light guide plate (13) being arranged on the bottom plate (111), and the lamp strip (12) comprising a substrate (121) and a plurality of lamp beads (122) arranged on the substrate (121), the substrate (121) being mounted on the side of the first side plate (112) away from the light guide plate (13), and each lamp bead (122) corresponding to one opening (1121). A middle frame (20) comprising a horizontal plate (21) and a vertical plate (22) connected to each other, the horizontal plate (21) being arranged on the upper side of the back plate (11), the vertical plate (22) being arranged on the outer side of the substrate (121), one of the substrate (121) and the vertical plate (22) being provided with a buckle (124), and the other being provided with a clamping hole (221), the buckle (124) being clamped and matched with the clamping hole (221). The substrate (121) and the back plate (11) are connected by a connecting adhesive tape (15).

2. The display device of claim 1, wherein, The connecting adhesive tape (15) is double-sided adhesive tape and is clamped between the substrate (121) and the first side plate (112), and the double-sided adhesive tape is provided with a first avoiding hole (151) for the lamp beads (122) to pass through.

3. The display device of claim 2, wherein, At least one side of the connecting adhesive tape (15) is adhesive, a first end (152) of the connecting adhesive tape (15) is attached to the side of the first side plate (112) facing the light guide plate (13), and a second end (153) of the connecting adhesive tape (15) is arranged around the top of the first side plate (112), the side of the substrate (121) away from the first side plate (112) and is attached to the lower side of the bottom plate (111).

4. The display device of claim 2, wherein, The first end (152) of the connecting adhesive tape (15) comprises a plurality of spaced-apart extension portions (154), the extension portions (154) extending into the adjacent lamp beads (122), at least the extension portions (154) are double-sided adhesive tape, and a release film (17) is attached to the side of the extension portions (154) away from the first side plate (112).

5. The display device of claim 4, wherein, The connecting adhesive tape (15) is provided with a mark line (155), and the mark line (155) is configured to mark the attachment position of the substrate (121); and / or 6. The display device of claim 4, wherein, The connecting adhesive tape (15) is provided with a third avoiding hole (156), and the third avoiding hole (156) is configured to avoid the buckle (124). The connecting adhesive tape (15) is light-blocking adhesive tape.

7. The display device according to claim 4, wherein The backlight module (10) further comprises light-blocking adhesive tape (16), one end of the light-blocking adhesive tape (16) being attached to the side of the substrate (121) away from the first side plate (112), and the other end extending to the lower side of the bottom plate (111) and being attached to the lower side of the bottom plate (111).

8. The display device of any one of claims 1-3, wherein, ​ 9. The display device of claim 8, wherein, The back plate (11) further comprises two second side plates (113), each of which is connected with the bottom plate (111) and located at the two ends of the first side plate (112) along the first direction, and the two ends of the light-shielding adhesive tape (16) along the first direction respectively extend to the second side plate (113) at the corresponding end from the base plate (121) and are attached to the second side plate (113).

10. The display device of claim 8, wherein, The light-shielding adhesive tape (16) is provided with a second avoiding hole (164) for avoiding the buckle (124).

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