Display device

Abstract

The utility model discloses a display device, the display device comprises a backlight module and a display panel, the backlight module comprises a back plate, an optical assembly and a heat dissipation middle frame, the optical assembly is arranged on the back plate, the display panel is arranged on the optical assembly, the back plate faces the direction of the display panel, and the heat dissipation middle frame is arranged on the display panel. The edges of the four sides of the back plate are flush with the edges of the corresponding four sides of the display panel, and the heat dissipation middle frame is arranged on the four sides of the back plate and the display panel in a surrounding mode and fixes the back plate and the display panel; heat dissipation holes are formed in the vertical faces of the extending directions of the heat dissipation middle frame and the four sides of the display panel. The heat dissipation middle frame not only can be used as an outer middle frame, but also can be used as a surface frame, the heat dissipation holes are formed in the vertical surfaces of the extension directions of the four sides of the heat dissipation middle frame and the display panel, high heat generated by the display device can be quickly conducted out through the heat dissipation holes in the heat dissipation middle frame, and the surface frame does not need to be additionally prepared; and preparation materials and preparation time of the display device are reduced, so that the cost is reduced, and the competitiveness is improved.

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 glass 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; since the Mini-LED module screens are all HDR1000 displays or HDR1400 displays, the backlight power is high and the heat dissipation is large, some will add fans to the module screens to dissipate heat for the sake of heat dissipation, but this type of heat dissipation method is complex to produce, costly, and has poor heat dissipation. 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, makes the installation of the display device simple, reduces the cost, and improves the heat dissipation efficiency.

[0005] The present application discloses a display device, which includes a backlight module and a display panel. The backlight module includes a back plate, an optical component and a heat dissipation middle frame. The optical component is arranged on the back plate, and the display panel is arranged on the optical component. In the direction of the back plate toward the display panel, the edges of the four sides of the back plate are flush with the edges of the four sides corresponding to the display panel. The heat dissipation middle frame is arranged around the four sides of the back plate and the display panel and fixes the back plate and the display panel; wherein the heat dissipation middle frame is provided with heat dissipation holes on the vertical plane of the extension direction of the four sides of the display panel.

[0006] Optionally, the heat dissipation middle frame includes four frames, namely a first frame, a second frame, a third frame and a fourth frame, the first frame is arranged on the ground side of the display panel, the second frame and the third frame are respectively arranged on the left and right sides of the display panel, and the fourth frame is arranged on the sky side of the display panel; the first frame includes a first bottom surface and a first side surface, the first bottom surface is connected to the first side surface in an L shape, the first bottom surface abuts the ground side of the display panel, and the first side surface covers the edge of the display surface of the display panel; the second frame, the third frame and the fourth frame all include a fitting surface, the fitting surfaces of the second frame, the third frame and the fourth frame are respectively fitted with the left side, the right side and the sky side of the display panel, and the two ends of the fitting surfaces of the second frame, the third frame and the fourth frame include a first extension portion and a second extension portion, the first extension portion covers the edge of the display surface of the display panel, and the second extension portion covers the edge of the back plate.

[0007] Optionally, the first bottom surface of the first frame and the fitting surfaces of the second frame, the third frame and the fourth frame are vertical surfaces in the extension direction of the heat dissipation middle frame and the four sides of the display panel, and the number and total area of ​​the heat dissipation holes on the bottom surface of the first frame are greater than the number and total area of ​​the heat dissipation holes on the fitting surface of the second frame or the third frame or the fourth frame.

[0008] Optionally, the heat dissipation hole is elliptical, and the axis of the heat dissipation hole is the long axis in the direction of the back plate toward the display panel. In the area corresponding to the binding area of ​​the display panel, the number of heat dissipation holes is greater than the number of heat dissipation holes in other areas, and the spacing between two adjacent heat dissipation holes is smaller than the spacing between two adjacent heat dissipation holes in other areas.

[0009] Optionally, the width of the first extension portion in the extension direction is smaller than the width of the second extension portion in the extension direction; and in the direction of the back plate toward the display panel, the height of the bonding surface is higher than the height of the display panel, the angle between the first extension portion and the bonding surface is less than 90 degrees, one end of the first extension portion is connected to one end of the bonding surface, and the other end of the first extension portion abuts the display panel.

[0010] Optionally, the back panel includes a glass substrate, a groove is provided on a surface of the glass substrate close to the optical component, a lamp bead is provided in the groove, and in the direction of the back panel toward the display panel, the height of the lamp bead is lower than the height of the opening of the groove; the optical component includes a diffuser plate and an optical film, the diffuser plate is bonded to the glass substrate, and the optical film is bonded to the diffuser plate.

[0011] Optionally, the backlight module includes double-sided solid glue, which is arranged around the optical component and perpendicular to the glass substrate and the display panel. In the direction of the back plate toward the display panel, one end of the double-sided solid glue abuts against the glass substrate, and the other end abuts against the display panel; in the direction of the back plate toward the display panel, the height of the double-sided solid glue is higher than the height of the optical film.

[0012] Optionally, the backlight module includes decorative sealant, which is arranged between the heat dissipation middle frame and the sides of the display panel and the backlight module, and the decorative sealant is used to adhere and fix the glass substrate and the display panel; double-sided tape is arranged between the second extension parts of the second frame, the third frame and the fourth frame and the back plate, which is used to fix the heat dissipation middle frame and the back plate; a chip-on-chip film is arranged in the binding area of ​​the display panel, one side of the chip-on-chip film is connected to the ground side of the display panel, and the other side is bent toward the side of the back plate away from the display panel, and is adhered to the side of the bottom plate of the back plate away from the display panel, and covers the decorative sealant arranged on the ground side of the display panel.

[0013] Optionally, the back plate includes a metal back plate, an inner middle frame is provided between the metal back plate and the display panel, the optical component includes a diffuser plate and an optical film, the optical film is bonded to the diffuser plate, and a support column is provided between the metal back plate and the diffuser plate; the inner middle frame is arranged around the optical component and is perpendicular to the metal back plate and the display panel, and in the direction of the metal back plate toward the display panel, one end of the inner middle frame abuts against the metal back plate, and the other end abuts against the display panel; a plurality of screw holes are provided on the second extension portion, and screws are used to fix the second extension portion to the metal back plate at the screw holes.

[0014] Optionally, the backlight module also includes a heat sink, which is arranged between the bottom surface of the first frame and the ground side of the display panel, and the heat sink is hollowed out corresponding to the heat dissipation hole area; wherein the heat sink includes at least one of materials such as graphite or graphene or thermal conductive silicone.

[0015] Compared with the solution of adding a heat sink on the other side of the driving chip in the binding area of ​​the display panel, the present application provides a new backlight module, which changes the heat dissipation middle frame. Specifically, the heat dissipation middle frame and the face frame are combined into one, and the original face frame is eliminated. There is no need to set up an additional face frame to fix the display panel. The present application is used to replace the heat dissipation middle frame of the original outer middle frame and the face frame. Heat dissipation holes are provided on the vertical plane of the heat dissipation middle frame and the extension direction of the four sides of the display panel. In this way, the high heat generated by the Mini-LED liquid crystal display product can be quickly discharged through the heat dissipation holes on the heat dissipation middle frame, and there is no need to prepare a face frame separately, thereby reducing the preparation materials and preparation time of the display device, thereby reducing costs and 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 partial structural 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 structural exploded diagram of a display device according to a second embodiment of the present application;

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

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

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

[0023] Figure 7 is a schematic cross-sectional view of a display device according to a fifth embodiment of the present application;

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

[0025] Fig. 9 is a schematic structural diagram of a display device according to a sixth embodiment of the present application;

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

[0027] Fig.11 It is a schematic cross-sectional view of a display device according to the seventh embodiment of the present application.

[0028] Among them, 100, display device; 200, backlight module; 300, back plate; 310, glass substrate; 311, groove; 320, metal back plate; 400, optical component; 410, lamp beads; 420, transparent colloid; 430, diffuser; 440, optical film; 500, heat dissipation middle frame; 501, heat dissipation hole; 502, fitting surface; 503, first extension portion; 504, second extension portion; 505, optical film; 506, optical film; 507, optical film; 508, optical film; 509, optical film; 510, optical film; 511, optical film; 512, optical film; 513, optical film; 514, optical film; 515, optical film; 516, optical film; 517, optical film; 518, optical 5. Screw hole; 510. First frame; 511. First bottom surface; 512. First side surface; 520. Second frame; 530. Third frame; 540. Fourth frame; 550. Double-sided solid glue; 560. Decorative sealant; 570. Inner middle frame; 580. Support column; 590. Heat sink; 600. Display panel; 610. Ground side; 620. Sky side; 630. Binding area; 700. Chip-on-film. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0034] like Figure 1 As shown, as a first embodiment of the present application, a display device 100 is disclosed, the display device 100 includes a backlight module 200 and a display panel 600, the backlight module 200 includes a back plate 300, an optical component 400 and a heat dissipation middle frame 500, the optical component 400 is arranged on the back plate 300, the display panel 600 is arranged on the optical component 400 or above the optical component 400, the back plate 300 is in the direction of the display panel 600, that is, in the vertical direction, the edges of the four sides of the back plate 300 are flush with the edges of the four sides corresponding to the display panel 600, the heat dissipation middle frame 500 is arranged around the four sides of the back plate 300 and the display panel 600, and fixes the back plate 300 and the display panel 600; Among them, the display panel 600 is generally a thin rectangular structure with six faces, among which the top face is the display face, the bottom face is the light incident face, and the other four faces are side faces. The four sides of the display panel 600 refer to the four side faces of the display panel 600; the heat dissipation middle frame 500 is provided with heat dissipation holes 501 on the vertical faces of the extension directions of the four sides of the display panel 600. The extension directions of the four sides of the display panel 600 include four directions of front, back, left and right, and the faces perpendicular to the extension directions of the four sides are equivalent to vertical faces. The four faces of the heat dissipation middle frame 500 attached to the four sides of the display panel 600 are vertical faces. Holes are dug on the vertical faces perpendicular to the bottom or top faces of the heat dissipation middle frame 500 and the display panel 600 to form heat dissipation holes 501, so as to conduct the heat from the four sides of the display panel 600 away.

[0035] In this embodiment, the original face frame is cancelled, and the original outer middle frame and face frame are replaced by the newly designed heat dissipation middle frame 500, so as to reduce the materials required for preparing the panel and also reduce the steps for installing the face frame. When the face frame-free display product of the heat dissipation middle frame 500 of the present application is made into an HDR1000 display or an HDR1400 display, the heat generated by the MINI-LED lamp beads 410 is taken away through the air holes on all sides, and the original separate face frame production and assembly are cancelled, so as to save the development and production and assembly costs. In addition, because the face frame also needs to be partially fitted with the outer middle frame before, the distance for the heat emitted by the display panel 600 to be conducted into the air is increased. The heat originally had to pass through the outer middle frame and then through the face frame into the air. Now, the heat does not need to pass through the two-layer structure, but can be directly conducted out from the heat dissipation holes 501 of the heat dissipation middle frame 500. It can be seen that the newly designed heat dissipation middle frame 500 can not only reduce materials and installation time, but also improve the heat dissipation efficiency.

[0036] refer to Figure 2 and Figure 3 As shown, as the second embodiment of the present application, it is a further refinement of the above-mentioned first embodiment. The heat dissipation middle frame 500 includes four frames, namely a first frame 510, a second frame 520, a third frame 530 and a fourth frame 540. The first frame 510 is arranged on the ground side 610 of the display panel 600, the second frame 520 and the third frame 530 are arranged on the left and right sides of the display panel 600, respectively, and the fourth frame 540 is arranged on the sky side 620 of the display panel 600; the first frame 510 includes a first The bottom surface 511 and the first side surface 512, the first bottom surface 511 and the first side surface 512 are connected in an L shape, generally at 90 degrees, that is, vertically connected, of course, it may not be 90 degrees; the two connecting surfaces are connected to each other by long sides; the first bottom surface 511 is in contact with the ground side 610 of the display panel 600, and the first side surface 512 covers the edge of the display surface of the display panel 600, and the coverage here is partial coverage, and mainly covers the non-display area of ​​the display surface of the display panel 600, that is, the wiring area of ​​the display panel 600 corresponding to the binding area 630.

[0037] Generally, the second frame 520, the third frame 530 and the fourth frame 540 all include a fitting surface 502, that is, the second frame 520 has a fitting surface 502, the third frame 530 also has a fitting surface 502, and the fourth frame 540 also has a fitting surface 502. The fitting surface 502 is the surface that fits with the side surfaces of the four sides of the display panel 600 and the side surfaces of the four sides of the backlight module 200, and is also the main surface for heat dissipation; the fitting surface 502 mentioned here and the vertical surface and other surfaces mentioned in this application do not refer to a single surface, but can also be a whole, a rectangular parallelepiped or other three-dimensional structure with a certain thickness. For the convenience of understanding, it is named as a surface; the second frame 520, the third frame 530 and The fitting surface 502 of the fourth frame 540 is respectively fitted with the left side, right side and top side 620 of the display panel 600, and both ends of the fitting surface 502 of the second frame 520, the third frame 530 and the fourth frame 540 include a first extension portion 503 and a second extension portion 504, the first extension portion 503 covers the edge of the display surface of the display panel 600, and the second extension portion 504 covers the edge of the back plate 300; the distance between the first extension portion 503 of the fourth frame 540 and the first side surface 512 of the first frame 510 is less than or equal to the length of the display panel 600 in this direction, so as to achieve a comfortable fit and prevent the display panel 600 from falling forward when placed vertically.

[0038] It should be noted that the first bottom surface 511 of the first frame 510 and the fitting surfaces 502 of the second frame 520, the third frame 530 and the fourth frame 540 are vertical surfaces in the extension direction of the four sides of the heat dissipation middle frame 500 and the display panel 600; considering that the first frame 510 is a high-temperature area of ​​the display panel 600, that is, the heat dissipated is relatively large, more heat dissipation holes 501 need to be designed in the heat dissipation middle frame 500 here to speed up the heat dissipation speed. Therefore, the number and total area of ​​the heat dissipation holes 501 on the bottom surface of the first frame 510 are greater than the number and total area of ​​the heat dissipation holes 501 on the fitting surface 502 of the second frame 520 or the third frame 530 or the fourth frame 540.

[0039] In addition, the heat dissipation hole 501 is elliptical, and the axis of the heat dissipation hole 501 is the long axis in the direction of the back plate 300 toward the display panel 600. The number of the heat dissipation holes 501 in the area corresponding to the binding area 630 of the display panel 600 is greater than the number of heat dissipation holes 501 in other areas, and the spacing between two adjacent heat dissipation holes 501 is smaller than the spacing between two adjacent heat dissipation holes 501 in other areas. It should be noted that the heat dissipation ventilation holes opened around the side of the heat dissipation middle frame 500 can be through holes or staggered semi-blind holes, and can be made into various shapes.

[0040] refer to Figure 4 As shown, as the third embodiment of the present application, it is a further refinement of the above-mentioned second embodiment, the width of the first extension portion 503 in the extension direction is smaller than the width of the second extension portion 504 in the extension direction; and in the direction of the back plate 300 toward the display panel 600, the height of the fitting surface 502 is higher than the height of the display panel 600, and the angle between the first extension portion 503 and the fitting surface 502 is less than 90 degrees, similar to forming a chamfer to hold the display panel 600, one end of the first extension portion 503 is connected to one end of the fitting surface 502, and the other end of the first extension portion 503 is abutted against the display panel 600.

[0041] This embodiment mainly takes into account the fixing effect of the outer middle frame on the display panel 600 and the back plate 300. Usually, on one side of the display surface of the display panel 600, because a narrow frame needs to be achieved, the width of the non-display area at the edge is small, so the width of the first extension portion 503 used to clamp the display panel 600 is set to be relatively small, and the other end is the back plate 300. Because the back plate 300 is relatively thick and has a relatively large mass, that is, it is relatively heavy, when the display panel 600 is placed vertically, the back plate 300 may tip backwards, so a second extension portion 504 is set here to fix the position to prevent the back plate 300 from tipping backwards. Because the weight of the back plate 300 is large, there is no need to consider whether it forms an obstruction. For safety, the width of the second extension portion 504 is set to be larger. Of course, for the beauty of the back plate 300 and the cost of materials, it cannot be set too wide, and the width of the binding area 630 corresponding to the display panel 600 is sufficient.

[0042] like Figure 5As shown, as the fourth embodiment of the present application, it is a further refinement and improvement of any of the above embodiments, the back plate 300 includes a glass substrate 310, and a groove 311 is provided on a surface of the glass substrate 310 close to the optical component 400, and a lamp bead 410 is provided in the groove 311, and a lamp bead 410 is placed in each groove 311, and the lamp bead 410 in each groove 311 realizes independent light emission control through corresponding wiring; in the direction of the back plate 300 toward the display panel 600, the height of the lamp bead 410 is lower than the height of the opening of the groove 311. degree; the optical component 400 includes a diffuser plate 430 and an optical film 440, the diffuser plate 430 is bonded to the glass substrate 310, and the optical film 440 is bonded to the diffuser plate 430; a groove is dug on the glass substrate 310, and the lamp bead 410 is placed in the groove 311 without protruding from the groove 311, that is, when other structures are subsequently installed, they can be directly bonded to the first surface of the glass substrate 310, and OD0 can be truly realized. Moreover, because the lamp bead 410 is protected by the groove 311, the diffuser plate 430 and other structures can be prevented from damaging the lamp bead 410.

[0043] Furthermore, a transparent colloid 420 is provided on the lamp bead 410, and the transparent colloid 420 covers the lamp bead 410 and is arranged in a convex shape or an arc shape protruding toward the diffuser plate 430; it should be noted that the top height of the transparent colloid 420 is lower than the height of the opening of the groove 311; the lamp bead 410 is generally a Mini-LED lamp bead 410, and an arrangement groove 311 of the Mini-LED lamp bead 410 is etched on one side of the glass substrate 310 close to the diffuser plate 430, and then wiring is performed on the surface of the glass substrate 310 and the groove 311 to connect a large number of Mini-LED The lamp bead 410 is then welded or connected to the wiring in the groove 311, so that a Mini-LED light board with a partitioning function can be formed, and the lamp bead 410 is lower than the surface of the glass substrate 310, and then glue is dispensed on the groove 311 to form a glue dispensing lens to increase the light-emitting angle of the lamp bead 410. This can not only protect the lamp bead 410, but also the subsequent preparation of the diffuser plate 430 of the display device 100 can be directly placed on the surface of the glass substrate 310, so that the real OD0 is realized and the MINI ultra-thin module is achieved; and the requirements for operators in production are lower, and there is no fear of damaging the lamp bead 410 in production. The design of the Mini-LED light board is also simpler, and there is no need to press film on the glass substrate 310 or seal the entire substrate surface or weld support columns 580 on the substrate to protect the lamp bead 410, reducing additional protection design.

[0044] In order to further realize the ultra-thin module, the thickness of the glass substrate 310 is defined as A, the depth of the groove 311 is defined as L, and the thickness of the lamp bead 410 is defined as D, wherein 2mm≤A≤3mm, 0.2mm≤LD≤0.5mm; the length, width and height of the lamp bead 410 are generally selected to be 0.5mm, and the depth and size of the groove 311 are determined according to the size of the lamp bead 410, and the thickness of the glass substrate 310 is defined, so as to further realize the light and thin setting of the glass substrate 310. Moreover, the glass substrate 310 in this embodiment can be used not only as a light board, but also as a back plate 300. When using the backlight module 200 of this embodiment, there is no need to set up a back plate 300 separately; in addition, the side of the glass substrate 310 away from the diffuser plate 430 can be used as a decorative surface, and a corresponding decorative film layer or pattern can be set to realize the diversified use of the glass substrate 310.

[0045] Furthermore, the backlight module 200 includes a double-sided solid adhesive 550, which is arranged around the optical component 400 and is perpendicular to the glass substrate 310 and the display panel 600. In the direction from the back panel 300 to the display panel 600, one end of the double-sided solid adhesive 550 abuts against the glass substrate 310, and the other end abuts against the display panel 600; in the direction from the back panel 300 to the display panel 600, the height of the double-sided solid adhesive 550 is higher than the height of the optical film 440.

[0046] Because the flatness of the glass substrate 310 is high and the thickness of the glass substrate 310 is set within a certain range, the thickness is guaranteed, and the display panel 600 and the backlight module 200 can be pasted with double-sided tape, so there is no need to set up a back plate 300 separately, reducing the structure of the back plate 300, and the overall thickness of the display device 100 can be further reduced. At the same time, there is no need to install the back plate 300, which can not only save costs but also save installation time, and at the same time eliminate the double-sided tape or screws or glue that fix the light board to the back plate 300. In addition, the double-sided tape sticks the display panel 600 and the backlight module 200 together, and there is no need to set up an inner middle frame 570 separately, thereby eliminating the inner middle frame 570, further reducing the internal structure of the display device 100, saving installation time and reducing costs.

[0047] In addition, if Figure 6As shown, the lamp beads 410 include red lamp beads 410, green lamp beads 410 and blue lamp beads 410. Considering that the attenuation of blue light is more serious than that of red light and green light, the loss is relatively large. If the three colors of lamp beads 410 are at the same height or under the same obstacles, because the blue light attenuates more and the light of the other two colors attenuates less, the color will appear yellowish when the three colors are mixed. In order to prevent the color from being yellowish, the distance from the blue light to the mixed light area can be reduced. Specifically, the thickness of the transparent colloid 420 covering the blue lamp beads 410 can be reduced so that the transparent colloid 420 covering the blue lamp beads 410 is reduced. The thickness of the transparent colloid 420 on 410 is less than the thickness of the transparent colloid 420 covering the red lamp bead 410 or the green lamp bead 410; the depth of the groove 311 for placing the blue lamp bead 410 can also be made less than the depth of the groove 311 for placing the red lamp bead 410 or the green lamp bead 410, and the height difference between the top height of the transparent colloid 420 on the blue lamp bead 410 and the exit of the groove 311 is less than or equal to the height difference between the top height of the transparent colloid 420 on the red lamp bead 410 or the green lamp bead 410 and the exit of the groove 311.

[0048] like Figure 7 and Figure 8 As shown, as the fifth embodiment of the present application, which is a further refinement and improvement of the above-mentioned fourth embodiment, the backlight module 200 includes a decorative sealant 560, and the decorative sealant 560 is arranged between the heat dissipation middle frame 500 and the side of the display panel 600 and the backlight module 200, and the decorative sealant 560 is used to stick and fix the glass substrate 310 and the display panel 600; a double-sided adhesive is arranged between the second extension portion 504 of the second frame 520, the third frame 530 and the fourth frame 540 and the back plate 300, for fixing the heat dissipation middle frame 500 and the back plate 300; the display The binding area 630 of the panel 600 is provided with a chip-on-chip film 700, one side of the chip-on-chip film 700 is connected to the ground side 610 of the display panel 600, and the other side is bent toward the side of the back plate 300 away from the display panel 600, and is adhered to the side of the bottom plate of the back plate 300 away from the display panel 600, and covers the decorative sealant 560 arranged on the ground side 610 of the display panel 600, which can not only beautify the periphery of the backlight module 200, but also can wrap the light generated by the lamp beads 410 inside the display panel 600, thereby solving the problem of peripheral light leakage and bringing a better experience to users.

[0049] like Fig. 9 and Fig.10As shown, as the sixth embodiment of the present application, it is a further refinement and improvement of any of the above embodiments. Different from the above fourth embodiment, the back plate 300 includes a metal back plate 320, an inner middle frame 570 is provided between the metal back plate 320 and the display panel 600, the optical assembly 400 includes a diffuser plate 430 and an optical film 440, the optical film 440 is bonded to the diffuser plate 430, and a support column 580 is provided between the metal back plate 320 and the diffuser plate 430; the inner middle frame 570 surrounds the optical assembly 400. Part 400 is arranged and is perpendicular to the metal back plate 320 and the display panel 600. In the direction of the metal back plate 320 toward the display panel 600, one end of the inner middle frame 570 abuts against the metal back plate 320, and the other end abuts against the display panel 600. Of course, the support column 580 can also be omitted, and solid double-sided tape can be used to support structures such as the diffuser plate 430. In addition, a plurality of screw holes 505 are provided on the second extension portion 504, and screws are used at the screw holes 505 to fix it to the metal back plate 320.

[0050] In the present embodiment, the back plate 300 adopts a metal back plate 320. In the above-mentioned improved embodiment, except that the back plate 300 uses the metal back plate 320, the improvements of other structures have not changed, that is, other structures can also be used in the present embodiment. The metal back plate 320 in the present embodiment is made of metal material, so it has a better supporting effect on the display panel 600, and the metal itself has good thermal conductivity, which is beneficial to improve the heat dissipation effect of the display panel 600; and in order to better fix the heat dissipation middle frame 500 and the back plate 300, a hole can be punched on the second extension portion 504 of the heat dissipation middle frame 500, and the heat dissipation middle frame 500 and the back plate 300 are fixed together by screws, which not only increases the fixing effect, but also can achieve better heat dissipation through the metal back plate.

[0051] like Fig.11 As shown, as the seventh embodiment of the present application, it is a further improvement on any of the above embodiments, the backlight module 200 also includes a heat sink 590, and the heat sink 590 is arranged between the bottom surface of the first frame 510 and the ground side 610 of the display panel 600, and the heat sink 590 is hollowed out in the area corresponding to the heat dissipation hole 501; wherein, the heat sink 590 includes at least one of materials such as graphite or graphene or thermal conductive silicone.

[0052] This embodiment mainly takes into account that the heat dissipation effect of the heat dissipation hole 501 is also limited. In order to further improve the heat dissipation effect, a heat dissipation member 590 can be set between the heat dissipation middle frame 500 and the four sides of the display panel 600, especially between the ground side 610. The heat dissipation member 590 can quickly conduct heat. While the heat dissipation hole 501 is dissipating heat, the heat dissipation member 590 can also dissipate heat, thereby improving the heat dissipation effect.

[0053] 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.

[0054] 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.

[0055] 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: The invention comprises a backlight module and a display panel, wherein the backlight module comprises a back plate, an optical component and a heat dissipation middle frame, wherein the optical component is arranged on the back plate, and the display panel is arranged on the optical component, wherein the edges of the four sides of the back plate in the direction of the display panel are flush with the edges of the four sides corresponding to the display panel, and the heat dissipation middle frame is arranged around the four sides of the back plate and the display panel and fixes the back plate and the display panel; wherein heat dissipation holes are arranged on the vertical plane of the heat dissipation middle frame and the extension direction of the four sides of the display panel.

2. The display device according to claim 1, wherein: The heat dissipation middle frame includes four frames, namely a first frame, a second frame, a third frame and a fourth frame, the first frame is arranged on the ground side of the display panel, the second frame and the third frame are arranged on the left and right sides of the display panel respectively, and the fourth frame is arranged on the sky side of the display panel; The first frame includes a first bottom surface and a first side surface, the first bottom surface and the first side surface are connected to form an L-shape, the first bottom surface abuts against the ground side of the display panel, and the first side surface covers the edge of the display surface of the display panel; The second frame, the third frame and the fourth frame all include a fitting surface, and the fitting surfaces of the second frame, the third frame and the fourth frame are respectively fitted with the left side, the right side and the top side of the display panel, and both ends of the fitting surfaces of the second frame, the third frame and the fourth frame include a first extension portion and a second extension portion, and the first extension portion is covered and arranged on the edge of the display surface of the display panel, and the second extension portion is covered and arranged on the edge of the back panel.

3. The display device according to claim 2, wherein: The first bottom surface of the first frame and the fitting surfaces of the second frame, the third frame and the fourth frame are vertical surfaces in the extension direction of the heat dissipation middle frame and the four sides of the display panel, and the number and total area of ​​the heat dissipation holes on the bottom surface of the first frame are greater than the number and total area of ​​the heat dissipation holes on the fitting surface of the second frame or the third frame or the fourth frame.

4. The display device according to claim 3, characterized in that The heat dissipation hole is elliptical, and the axis of the heat dissipation hole is the long axis in the direction of the back plate toward the display panel. In the area corresponding to the binding area of ​​the display panel, the number of the heat dissipation holes is greater than the number of heat dissipation holes in other areas, and the spacing between two adjacent heat dissipation holes is smaller than the spacing between two adjacent heat dissipation holes in other areas.

5. The display device according to any one of claims 2 to 4, characterized in that: The width of the first extension portion in the extension direction is smaller than the width of the second extension portion in the extension direction; and in the direction from the back plate to the display panel, the height of the bonding surface is higher than the height of the display panel, the angle between the first extension portion and the bonding surface is less than 90 degrees, one end of the first extension portion is connected to one end of the bonding surface, and the other end of the first extension portion is abutted against the display panel.

6. The display device according to any one of claims 2 to 4, characterized in that: The back plate comprises a glass substrate, a surface of the glass substrate close to the optical component is provided with a groove, a lamp bead is arranged in the groove, and in the direction from the back plate to the display panel, the height of the lamp bead is lower than the height of the opening of the groove; The optical component comprises a diffusion plate and an optical film. The diffusion plate is bonded to the glass substrate, and the optical film is bonded to the diffusion plate.

7. The display device according to claim 6, wherein: The backlight module includes a double-sided solid adhesive, which is arranged around the optical component and is perpendicular to the glass substrate and the display panel. In the direction from the back plate to the display panel, one end of the double-sided solid adhesive abuts against the glass substrate, and the other end abuts against the display panel; In the direction from the back plate to the display panel, the height of the double-sided solid adhesive is higher than the height of the optical film.

8. The display device according to claim 7, characterized in that The backlight module includes a decorative sealant, which is arranged between the heat dissipation middle frame and the sides of the display panel and the backlight module, and the decorative sealant is used to adhere and fix the glass substrate and the display panel; Double-sided tape is arranged between the second extension parts of the second frame, the third frame and the fourth frame and the back panel for fixing the heat dissipation middle frame and the back panel; a chip-on-chip film is arranged in the binding area of ​​the display panel, one side of the chip-on-chip film is connected to the ground side of the display panel, and the other side is bent toward the side of the back panel away from the display panel, and is adhered to the side of the bottom plate of the back panel away from the display panel, and covers the decorative sealant arranged on the ground side of the display panel.

9. The display device according to any one of claims 2 to 4, characterized in that: The back plate includes a metal back plate, an inner middle frame is arranged between the metal back plate and the display panel, the optical component includes a diffuser and an optical film, the optical film is bonded to the diffuser, and a support column is arranged between the metal back plate and the diffuser; the inner middle frame is arranged around the optical component and is perpendicular to the metal back plate and the display panel, and in the direction from the metal back plate to the display panel, one end of the inner middle frame abuts against the metal back plate, and the other end abuts against the display panel; The second extension portion is provided with a plurality of screw holes, and is fixed to the metal back plate by using screws at the screw holes.

10. The display device according to any one of claims 2 to 4, characterized in that: The backlight module further includes a heat sink, which is disposed between the bottom surface of the first frame and the ground side of the display panel, and the heat sink is hollowed out in an area corresponding to the heat dissipation hole; Wherein, the heat sink includes at least one material selected from graphite, graphene, thermally conductive silicone and the like.

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