Display device

Abstract

The utility model discloses a display device which comprises a backlight module, a display panel and a control circuit board, the backlight module comprises a back plate and a circuit layer, the back plate is provided with a first surface and a second surface which are opposite to each other, and a plurality of lamp beads are arranged on the first surface; the circuit layer is arranged on the first surface of the back plate and is electrically connected with the lamp beads; the display panel is arranged on the light emitting surface of the lamp bead; one end of the control circuit board is connected with the ground side of the display panel, and the other end of the control circuit board is bent towards the second surface, far away from the back plate, of the back plate; wherein the back plate comprises an aluminum substrate. The aluminum substrate is used for replacing a back plate and a lamp plate, two plates do not need to be arranged, the original production process (screwing or gluing) that the lamp plate is fixed to the back plate is omitted, preparation materials and preparation time of the display device are reduced, the aluminum substrate is good in design strength, light in weight and high in flatness, and the module screen is light and thin.

Description

Technical Field

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

[0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, no radiation, etc., and has been widely used. As the communication interface between users and information, LCD has become the current mainstream display method due to its superior characteristics such as high space utilization, low electromagnetic interference and no radiation. It is widely used in new communication tools such as TV, smart phones, and tablet computers. The liquid crystal module of the liquid crystal display does not emit light itself, but the backlight module provides light for the liquid crystal module. The backlight module of the liquid crystal display includes direct backlight module and edge backlight module. Among them, the direct backlight module is widely used in the industry due to its superior cost advantage and gradually becomes the mainstream structure of liquid crystal display.

[0003] Currently, most of the Mini-LED LCD display products on the market have an aluminum substrate light board (or FR4 substrate light board, or aluminum substrate light board) fixed on the back panel, an inner middle frame is assembled on the inside of the back panel, and an optical diffuser plate and a membrane are placed on the inner middle frame; then the outer middle frame is assembled, and the OC is fixed to the outer middle frame with double-sided tape; among them, the thickness of the PCB substrate is generally 0.5 to 1.6 mm, which leads to insufficient strength and substandard flatness of the light board. It needs to be fixed on the metal back panel to achieve the strength and flatness of the module screen. The back of the metal back panel needs to be sprayed with oil or painted or the back cover needs to be enlarged to achieve the appearance of the product. The production and R&D processes are complicated, the product has many parts and components, and the cost is high. Utility Model Content

[0004] The purpose of the present application is to provide a display device, which reduces the original structure of the display device, simplifies the installation of the display device, and reduces the cost.

[0005] The present application discloses a display device, which includes a backlight module, a display panel and a control circuit board. The backlight module includes a back plate and a circuit layer. The back plate has a first surface and a second surface relative to each other, and a plurality of lamp beads are arranged on the first surface; the circuit layer is arranged on the first surface of the back plate and is electrically connected to the lamp beads; the display panel is arranged on the light emitting surface of the lamp beads; one end of the control circuit board is connected to the ground side of the display panel, and the other end is bent toward the back plate away from the second surface of the back plate; wherein the back plate includes an aluminum substrate.

[0006] Optionally, an insulating layer is provided between the circuit layer and the first surface, the circuit layer is arranged on the insulating layer, the circuit layer includes a pad area and an insulating area, the insulating area is provided with insulating ink, and the lamp bead is electrically connected to the pad of the pad area through a punching process.

[0007] Optionally, the thickness of the aluminum substrate is d, wherein 1.8 mm≤d≤3.2 mm.

[0008] Optionally, the display device also includes an optical component, which is arranged between the lamp bead and the display panel. A support column is also provided on the first surface of the aluminum substrate, one end of the support column abuts against the aluminum substrate, and the other end abuts against the optical component; in the direction of the aluminum substrate toward the display panel, the height of the support column is h1, and the height of the lamp bead is h2, wherein 2mm≤h1≤10mm, and h1>h2.

[0009] Optionally, the display device also includes an optical component, which is arranged between the lamp bead and the display panel. A transparent colloid layer is also provided on the first surface of the aluminum substrate, and the transparent colloid layer is covered on the lamp bead. One side of the transparent colloid layer is in contact with the aluminum substrate, and the other side is in contact with the optical component. wherein, in the direction of the aluminum substrate toward the display panel, the height of the transparent colloid layer away from the aluminum substrate is higher than the height of the lamp bead, the height of the lamp bead is h2, and the height of the transparent colloid layer away from the aluminum substrate is h3, wherein 0.1mm≤h3-h2≤0.3mm.

[0010] Optionally, the backlight module includes double-sided solid glue, which is arranged around the optical component and is perpendicular to the aluminum substrate and the display panel, and in the direction of the aluminum substrate toward the display panel, one end of the double-sided solid glue is abutted against the aluminum substrate, and the other end is abutted against the display panel; wherein, the optical component is arranged in the double-sided solid glue, and the four sides of the optical component are respectively abutted against the double-sided solid glue; in the direction of the aluminum substrate toward the display panel, the height of the double-sided solid glue is higher than the height of the optical component; in the extension direction of the opposite sides of the aluminum substrate, the width of the double-sided solid glue is smaller than the width of the aluminum substrate and the width of the display panel.

[0011] Optionally, the backlight module includes a light-shielding glue, which is arranged around the double-sided solid glue, and the four sides of the light-shielding glue are respectively abutted against the double-sided solid glue; wherein, in the direction of the aluminum substrate toward the display panel, the height of the light-shielding glue is higher than the height of the double-sided solid glue; in the extension direction of the opposite sides of the aluminum substrate, the width of the light-shielding glue is greater than the width of the aluminum substrate and the width of the display panel.

[0012] Optionally, the display device includes a front frame and a rear shell, the front frame is arranged on the ground side of the display panel, and is used to fix the display panel and the backlight module; the rear shell includes a vertical portion and a horizontal portion that are vertically connected to each other, the horizontal portion is arranged on the ground side of the display panel, and is fixed to the display panel by a snap, and the front frame is fixed to the horizontal portion by screws.

[0013] Optionally, the height of the vertical portion in the direction of the ground side of the display panel along the sky side is less than or equal to half of the height of the sky side of the display panel; wherein the second surface of the aluminum substrate includes an appearance surface, the appearance surface is provided with a decorative layer, and the height of the bottom of the decorative layer in the direction of the ground side of the display panel along the sky side is higher than the height of the top of the vertical portion.

[0014] Optionally, the backlight module also includes a heat sink, which is arranged between the horizontal portion of the rear shell and the ground side of the display panel, and the heat sink includes a hollow portion, and the buckle is arranged in the hollow portion; wherein the heat sink includes at least one material selected from graphite, graphene, thermal conductive silicone and the like.

[0015] Compared with the solution of the backlight module that requires the setting of a light board and a back board, the present application provides a new type of backlight module, which uses an aluminum substrate instead of the back board and the light board. The aluminum substrate can be used as both a back board and a light board. In this way, there is no need to set up two boards, and the original production process of fixing the light board to the back board (screwing or gluing) is eliminated, thereby reducing the preparation materials and preparation time of the display device. The aluminum substrate is designed to have good strength, light weight, and high flatness, so that the module screen is light and thin, thereby improving competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 is a cross-sectional schematic diagram of a display device according to a first embodiment of the present application;

[0018] Figure 2 is a cross-sectional schematic diagram of a display device according to a second embodiment of the present application;

[0019] Figure 3 is a schematic cross-sectional view of a display device according to a third embodiment of the present application;

[0020] Figure 4 is a schematic cross-sectional view of a display device according to a fourth embodiment of the present application;

[0021] Figure 5 is a schematic cross-sectional view of a display device according to a fifth embodiment of the present application;

[0022] Figure 6 is a cross-sectional schematic diagram of another display device according to the fifth embodiment of the present application;

[0023] Figure 7 is a structural exploded diagram of a display device according to a sixth embodiment of the present application;

[0024] Figure 8 is a partial structural diagram of a display device according to a sixth embodiment of the present application;

[0025] Fig. 9 The sixth embodiment of the present application Figure 8 An enlarged view of a portion of the structure of the display device;

[0026] Fig.10 It is a schematic cross-sectional view of a display device according to a sixth embodiment of the present application.

[0027] Among them, 100, display device; 200, backlight module; 210, back plate; 211, first surface; 212, second surface; 2121, appearance surface; 2122, decorative layer; 213, aluminum substrate; 214, insulating layer; 215, circuit layer; 216, pad area; 217, insulating area; 220, lamp beads; 230, optical components; 231, diffuser plate; 232, optical film; 240, support column; 250, transparent colloid layer; 260, double-sided solid glue; 270, shading glue; 280, heat sink; 281, hollow part; 300, display panel; 400, control circuit board; 500, front frame; 600, rear shell; 610, vertical part; 620, horizontal part. DETAILED DESCRIPTION

[0028] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0029] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more. The term "including" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0030] In addition, terms indicating orientation or positional relationships, such as “center,” “lateral,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside,” are described based on the orientation or relative positional relationships shown in the accompanying drawings and are merely simplified descriptions for the convenience of describing the present application. They do not indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present application.

[0031] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", 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 it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0033] like Figure 1As shown, as the first embodiment of the present application, a display device 100 is disclosed, the display device 100 includes a backlight module 200, a display panel 300 and a control circuit board 400, the control circuit board 400 is a flexible circuit board, that is, a flip chip; the backlight module 200 includes a backplane 210 and a circuit layer 215, the backplane 210 has a first surface 211 and a second surface 212 relative to each other, a plurality of lamp beads 220 are arranged on the first surface 211, the lamp beads 220 are arranged above the surface and are also arranged on the first surface 211, other film layers or structures can be arranged between the first surface 211 and the lamp beads 220, and the lamp beads 220 are generally mini-l ed lamp bead 220; the circuit layer 215 is arranged on the first surface 211 of the back plate 210 and is electrically connected to the lamp bead 220; the display panel 300 is arranged on the light-emitting surface of the lamp bead 220; one end of the control circuit board 400 is connected to the ground side of the display panel 300, and the other end is bent toward the back plate 210 away from the second surface 212 of the back plate 210; wherein, the back plate 210 includes an aluminum substrate 213, and the aluminum substrate 213 mainly adopts a laminated aluminum substrate 213. In order to ensure the wiring and punching process, the thickness of the aluminum substrate 213 also needs to be strictly limited. Generally, the thickness of the aluminum substrate 213 is d, wherein 1.8mm≤d≤3.2mm.

[0034] In this embodiment, the original back panel and light board are eliminated and replaced by a newly designed aluminum substrate 213. There is no need to set up two panels, which reduces the materials required for preparing the display device 100. It also reduces the steps of installing the surface frame and eliminates the original production process of fixing the light board to the back panel (screwing or gluing). The aluminum substrate 213 is used to replace the back panel and light board, which not only reduces the preparation materials and preparation time of the display device 100, but also the aluminum substrate 213 is designed to have good strength, light weight, and high flatness, so that the module screen is light and thin, and the heat dissipation performance is good, which solves the heat dissipation problem of Mini-LED products when the brightness is high.

[0035] refer to Figure 2 As shown, as the second embodiment of the present application, it is a further refinement of the above-mentioned first embodiment, the circuit layer 215 is arranged on an aluminum substrate, the circuit layer 215 is a copper wire, and the copper wire is printed on the aluminum substrate 213 to form the circuit layer 215. In order to avoid the influence of the circuit connected to the lamp bead 220 on other circuits in the aluminum substrate 213, an insulating layer 214 is provided between the circuit layer 215 and the first surface 211, and the circuit layer 215 is arranged on the insulating layer 214. The circuit layer 215 includes a pad area 216 and an insulating area 217. The insulating area 217 is provided with insulating ink, and the lamp bead 220 is electrically connected to the pad of the pad area 216 through a punching process.

[0036] Generally, in the preparation process of the circuit layer 215, an insulating layer 214 is first laid on the front side of the aluminum substrate 213, that is, the first surface 211, and then the copper circuit is laid or printed. The insulating white ink is printed on the top, and the copper pad is exposed at the lamp layout, and the SMI lamp beads 220 are fixed on the pad.

[0037] refer to Figure 3 As shown, as the third embodiment of the present application, it is a further refinement of the above-mentioned second embodiment, the display device 100 also includes an optical component 230, the optical component 230 includes a diffuser plate 231 and an optical film 232, the optical component 230 is arranged between the lamp bead 220 and the display panel 300, the optical film 232 is arranged between the diffuser plate 231 and the display panel 300, and a support column 240 is also provided on the first surface 211 of the aluminum substrate 213, one end of the support column 240 abuts against the aluminum substrate 213, and the other end abuts against the optical component 230; in the direction of the aluminum substrate 213 toward the display panel 300, the height of the support column 240 is h1, and the height of the lamp bead 220 is h2, wherein 2mm≤h1≤10mm, h1>h2.

[0038] In this embodiment, a support column 240 with a height greater than that of the lamp bead 220 is arranged between the diffuser plate 231 and the aluminum substrate 213 to prevent the lamp bead 220 from directly contacting the diffuser plate 231 and being crushed by the diffuser plate 231. Usually, the support column 240 is arranged between the lamp beads 220, and the number of the support columns 240 is less than the number of the lamp beads 220. The number of the support columns 240 can be set as needed while ensuring the supporting effect of the optical component 230. In addition, considering the supporting effect of the support column 240 and the thickness of the display device 100, the height of the support column 240 is usually set to be greater than the height of the lamp bead 220, so that there is a certain distance between the diffuser plate 231 and the lamp bead 220, and there is no direct contact, and the height of the support column 240 is limited according to the height of the lamp bead 220 itself, which is conducive to reducing the overall thickness of the display device 100.

[0039] refer to Figure 4As shown, as the fourth embodiment of the present application, it is a further refinement of the above-mentioned third embodiment. Different from the above-mentioned third embodiment, a transparent colloid layer 250 is also provided on the first surface 211 of the aluminum substrate 213, and the transparent colloid layer 250 is covered on the lamp bead 220, and one side of the transparent colloid layer 250 is in contact with the aluminum substrate 213, and the other side is in contact with the optical component 230; wherein, in the direction of the aluminum substrate 213 toward the display panel 300, the height of the transparent colloid layer 250 away from the side of the aluminum substrate 213 is h3, which is higher than the height h2 of the lamp bead 220, wherein 0.1mm≤h3-h2≤0.3mm.

[0040] The configuration of this embodiment is different from that of the third embodiment, but the main purpose is the same, which is to protect the lamp bead 220. After the lamp bead 220 is set, this embodiment re-lays a layer of transparent colloid layer 250, which is generally transparent UV glue, to cover the lamp bead 220 to avoid direct contact between the lamp bead 220 and the diffuser plate 231, thereby preventing the pressure of the diffuser plate 231 structure from directly acting on the lamp bead 220 and causing damage to the lamp bead 220.

[0041] like Figures 5 and 6 As shown, as the fifth embodiment of the present application, it is a further refinement and improvement of the third embodiment or the fourth embodiment mentioned above, the backlight module 200 includes a double-sided solid adhesive 260, the double-sided solid adhesive 260 is arranged around the optical component 230, and is perpendicular to the aluminum substrate 213 and the display panel 300, in the direction of the aluminum substrate 213 toward the display panel 300, one end of the double-sided solid adhesive 260 abuts against the aluminum substrate 213, and the other end abuts against the display panel 300; wherein, the optical component 230 is arranged in the double-sided solid adhesive 260, and the four sides of the optical component 230 abut against the double-sided solid adhesive 260 respectively; in the direction of the aluminum substrate 213 toward the display panel 300, the height of the double-sided solid adhesive 260 is higher than the height of the optical component 230; in the extension direction of the opposite sides of the aluminum substrate 213, the width of the double-sided solid adhesive 260 is less than the width of the aluminum substrate 213 and the width of the display panel 300.

[0042] Because the aluminum substrate 213 has a high flatness and the thickness of the aluminum substrate 213 is set within a certain range, the thickness is guaranteed, and double-sided tape can be used to stick the display panel 300, the light board and the optical component 230. Because the aluminum substrate 213 serves as both the light board and the back panel 210, there is no need to set up a back panel 210 separately, which reduces the structure of the back panel 210 and can further reduce the overall thickness of the display device 100. At the same time, there is no need to install the back panel 210, which not only saves costs but also saves installation time, and at the same time eliminates the double-sided tape, screws or glue that fixes the light board to the back panel 210. In addition, the double-sided tape sticks the display panel 300 and the backlight module 200 together, and there is no need to set up an inner middle frame separately, thereby eliminating the inner middle frame, further reducing the internal structure of the display device 100, saving installation time and reducing costs.

[0043] Furthermore, the backlight module 200 includes a light shielding glue 270, which is arranged around the double-sided solid glue 260, and the four sides of the light shielding glue 270 are respectively abutted against the double-sided solid glue 260; OC double-sided glue, i.e., double-sided solid glue 260, is used around the lamp bead 220 to fix the OC and the lamp board, and then a light shielding material (such as PET), i.e., light shielding glue 270, is used around the sides to wrap the side to prevent the light of the module from leaking out; wherein, when the aluminum substrate 213 faces the display panel In the direction of 300, the height of the light-shielding glue 270 is higher than the height of the double-sided solid glue 260; in the extension direction of the two opposite sides of the aluminum substrate 213, the width of the light-shielding glue 270 is greater than the width of the aluminum substrate 213 and the width of the display panel 300. The light-shielding glue 270 can not only block light, but also wrap the light generated by the lamp beads 220 inside the display panel 300 without causing peripheral light leakage, and can also serve as a decorative edge to beautify the periphery of the backlight module 200.

[0044] like Figures 7 to 10 As shown, as the sixth embodiment of the present application, which is a further refinement and improvement of any of the above embodiments, the display device 100 includes a front frame 500 and a rear shell 600, the front frame 500 is arranged on the ground side of the display panel 300, and is used to fix the display panel 300 and the backlight module 200; the rear shell 600 includes a vertical portion 610 and a horizontal portion 620 that are vertically connected to each other, the horizontal portion 620 is arranged on the ground side of the display panel 300, and is fixed to the display panel 300 by a buckle, and the front frame 500 and the horizontal portion 620 are fixed by screws.

[0045] In the direction of the sky side of the ground side of the display panel 300, the height of the vertical portion 610 is less than or equal to half of the height of the sky side of the display panel 300; wherein, the second surface 212 of the aluminum substrate 213 includes an appearance surface 2121, and the appearance surface 2121 is provided with a decorative layer 2122, and the bottom height of the decorative layer 2122 is higher than the top height of the vertical portion 610 in the direction of the sky side of the ground side of the display panel 300. Since the back of the film-coated aluminum substrate has a brushed pattern or other appearance surface treatment process, the process of spraying or baking paint can be saved, and the original large rear shell 600 can be reduced by about half, and the back plate 210, that is, the upper half of the aluminum substrate 213 is exposed to make the appearance surface 2121, thereby reducing the cost of the rear shell 600.

[0046] Furthermore, considering that the control circuit board 400, that is, the chip on film chip will generate heat when working, in order to dissipate the heat of the control circuit board 400, a heat sink 280 is generally arranged in the control circuit board 400 area, or around the entire display panel 300, and the heat sink 280 is arranged between the horizontal portion 620 of the rear shell 600 and the ground side of the display panel 300, and the heat sink 280 includes a hollow portion 281, and the buckle is arranged in the hollow portion 281; wherein, the heat sink 280 includes at least one material selected from graphite or graphene or thermal conductive silicone; by digging holes in the heat sink 280, not only the heat dissipation effect can be improved, but also buckles can be arranged at the holes to achieve the fixation of the front frame 500 and the rear shell 600.

[0047] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0048] The technical solution of the present application can be widely used in various display panels, such as TN (Twisted Nematic) display panel, IPS (In-Plane Switching) display panel, VA (Vertical Alignment) display panel, MVA (Multi-Domain Vertical Alignment) display panel, all of which are applicable to the above solution.

[0049] The above contents are further detailed descriptions of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A display device, characterized in that: include: A backlight module, the backlight module comprising a back plate and a circuit layer; The back plate has a first surface and a second surface opposite to each other, and a plurality of lamp beads are arranged on the first surface; The circuit layer is arranged on the first surface of the back plate and is electrically connected to the lamp beads; A display panel, the display panel is arranged on the light emitting surface of the lamp bead; as well as A control circuit board, one end of which is connected to the ground side of the display panel, and the other end of which is bent toward the back plate away from the second surface of the back plate; Wherein, the back plate includes an aluminum substrate.

2. The display device according to claim 1, wherein: An insulating layer is provided between the circuit layer and the first surface, the circuit layer is provided on the insulating layer, the circuit layer includes a pad area and an insulating area, the insulating area is provided with insulating ink, and the lamp beads are electrically connected to the pads in the pad area through a punching process.

3. The display device according to claim 1 or 2, characterized in that: The thickness of the aluminum substrate is d, wherein 1.8 mm≤d≤3.2 mm.

4. The display device according to claim 1, wherein: The display device further comprises an optical component, wherein the optical component is arranged between the lamp bead and the display panel, and a support column is further arranged on the first surface of the aluminum substrate, wherein one end of the support column abuts against the aluminum substrate, and the other end abuts against the optical component; In the direction of the aluminum substrate toward the display panel, the height of the support column is h1, and the height of the lamp bead is h2, wherein 2mm≤h1≤10mm, and h1>h2.

5. The display device according to claim 1, wherein: The display device further comprises an optical component, wherein the optical component is arranged between the lamp beads and the display panel, and a transparent colloid layer is further arranged on the first surface of the aluminum substrate, wherein the transparent colloid layer is arranged to cover the lamp beads, and one side of the transparent colloid layer abuts against the aluminum substrate, and the other side abuts against the optical component; Among them, in the direction of the aluminum substrate toward the display panel, the height of the transparent colloid layer away from the aluminum substrate is higher than the height of the lamp bead, the height of the lamp bead is h2, and the height of the transparent colloid layer away from the aluminum substrate is h3, wherein 0.1mm≤h3-h2≤0.3mm.

6. The display device according to any one of claims 4 or 5, characterized in that: The backlight module includes a double-sided solid adhesive, which is arranged around the optical component and is perpendicular to the aluminum substrate and the display panel. In the direction from the aluminum substrate to the display panel, one end of the double-sided solid adhesive abuts against the aluminum substrate, and the other end abuts against the display panel; In which, the optical component is arranged in the double-sided solid adhesive, and the four sides of the optical component are respectively abutted against the double-sided solid adhesive; in the direction of the aluminum substrate toward the display panel, the height of the double-sided solid adhesive is higher than the height of the optical component; in the extension direction of the opposite sides of the aluminum substrate, the width of the double-sided solid adhesive is smaller than the width of the aluminum substrate and the width of the display panel.

7. The display device according to claim 6, wherein: The backlight module comprises a light shielding adhesive, the light shielding adhesive is arranged around the double-sided solid adhesive, and the four sides of the light shielding adhesive are respectively in contact with the double-sided solid adhesive; Among them, in the direction from the aluminum substrate to the display panel, the height of the light-shielding glue is higher than the height of the double-sided solid glue; in the extension direction on the opposite sides of the aluminum substrate, the width of the light-shielding glue is respectively greater than the width of the aluminum substrate and the width of the display panel.

8. The display device according to claim 1, wherein: The display device comprises a front frame and a rear shell, wherein the front frame is arranged on the ground side of the display panel and is used to fix the display panel and the backlight module; The rear shell includes a vertical portion and a horizontal portion which are vertically connected to each other. The horizontal portion is arranged on the ground side of the display panel and is fixed to the display panel by a buckle. The front frame is fixed to the horizontal portion by screws.

9. The display device according to claim 8, wherein: In the direction of the ground side of the display panel along the sky side, the height of the vertical portion is less than or equal to half of the height of the sky side of the display panel; The second surface of the aluminum substrate includes an appearance surface, the appearance surface is provided with a decorative layer, and in the direction of the sky side of the ground side of the display panel, the height of the bottom of the decorative layer is higher than the height of the top of the vertical portion.

10. The display device according to claim 9, characterized in that The backlight module further includes a heat sink, which is disposed between the horizontal portion of the rear housing and the ground side of the display panel. The heat sink includes a hollow portion, and the buckle is disposed in the hollow portion.

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