Backlight module and display device

Abstract

The present application discloses a backlight module and a display device, which relate to the field of display technology. The backlight module includes a lamp board, on which a plurality of light-emitting units are arranged at intervals. The backlight module also includes a diffuser plate, which is arranged on the light-emitting side of the lamp board at a position corresponding to the lamp board. The diffuser plate includes a plurality of support members and a flat portion, the flat portion is arranged parallel to the lamp board, and a plurality of support members are arranged at intervals on a side of the flat portion close to the lamp board. The support members are perpendicular to the flat portion, and the height of the support members is equal to the distance between the flat portion and the lamp board, and each support member is arranged corresponding to the gap between two adjacent light-emitting units. The position of the lamp board corresponding to the support member is provided with a receiving groove, and the side of the support member away from the flat portion is embedded in the receiving groove. The present application improves the alignment deviation generated during installation between the diffuser plate and the lamp board through the above method, and realizes rapid positioning and installation between the diffuser plate and the lamp board.

Description

Technical Field

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

[0002] The current Mini LED backlight can greatly improve the display quality and is comparable to OLED in terms of wide color gamut, ultra-high contrast, and HDR display. At the same time, its price has outstanding advantages over OLED of the same size, with higher cost performance and huge development potential.

[0003] Usually in a Mini LED backlight module, the light board is arranged below the diffuser plate. The light emitted by the multiple light-emitting units arranged on the light board is refracted, reflected, and scattered in different directions by the diffuser plate, thereby changing the light's path and achieving sufficient dispersion of the incident light to produce an optical diffusion effect. In order to ensure that the light from the light-emitting units on the light board can be irradiated on the diffuser plate as much as possible, when the diffuser plate is installed on the light board, it is often necessary to install it directly opposite the light board. However, since the traditional diffuser plate is a thinner film, it is easy to have an alignment deviation with the light board, resulting in light loss. Repeatedly adjusting the position of the diffuser plate to align with the light board affects production efficiency.

[0004] Therefore, how to improve the alignment deviation between the diffuser plate and the light panel during installation and achieve rapid positioning and installation has become an urgent problem to be solved in this field. Summary of the Invention

[0005] The purpose of the present application is to provide a backlight module and a display device to improve the alignment deviation between the diffuser plate and the light board during installation, so as to achieve rapid positioning and installation between the diffuser plate and the light board.

[0006] The present application discloses a backlight module, including a lamp board, on which a plurality of light-emitting units are arranged at intervals, the backlight module also including a diffusion plate, the diffusion plate being arranged at a position corresponding to the position of the lamp board on the light-emitting side of the lamp board, the diffusion plate including a plurality of supporting members and a plane portion, the plane portion being arranged parallel to the lamp board, a plurality of supporting members being arranged at intervals on a side of the plane portion close to the lamp board, the supporting members being perpendicular to the plane portion, the height of the supporting members being equal to the distance between the plane portion and the lamp board, and each of the supporting members being arranged corresponding to the gap between two adjacent light-emitting units; a receiving groove is provided on the light board at a position corresponding to the supporting member, and the side of the supporting member away from the plane portion is embedded in the receiving groove.

[0007] Optionally, at least two of the receiving grooves are arranged at opposite corners of the light board.

[0008] Optionally, the accommodating groove includes at least one positioning groove, at least one positioning groove is arranged in the middle of the lamp board, the positioning groove is cross-shaped, and the cross-section of the support member corresponding to the position of the positioning groove matches the shape of the positioning groove.

[0009] Optionally, a plurality of slots are provided on a side of the planar portion close to the light board, each support member is inserted into the slot and has an interference fit with the slot, and the number of the support members is less than or equal to the number of the slots.

[0010] Optionally, the support member includes a transparent part and a functional part, one side of the transparent part is connected to the planar part, and the other side is connected to one side of the functional part, and the other side of the functional part is partially embedded in the accommodating groove; the height of the transparent part is smaller than the height of the functional part; the outer surface of the functional part is not transparent.

[0011] Optionally, the functional part is made of a transparent material, the outer surface of the functional part is covered with a reflective layer, and a card slot is provided on the side of the functional part close to the light board; the light board also includes a plurality of auxiliary light-emitting units, the auxiliary light-emitting units are arranged in the accommodating groove, and the auxiliary light-emitting units correspond to the position of the card slot; the auxiliary light-emitting units are embedded in the card slot.

[0012] Optionally, the functional portion is made of a light-shielding material, and an elastic member is provided on a side of the functional portion close to the lamp board, and the elastic member abuts against the bottom of the accommodating groove.

[0013] Optionally, the plurality of support members include a first support member, a second support member, a third support member and a fourth support member connected end to end in sequence, and each of the light-emitting units is located in an area surrounded by the first support member, the second support member, the third support member and the fourth support member; the plurality of accommodating grooves include a first accommodating groove, a second accommodating groove, a third accommodating groove and a fourth accommodating groove connected end to end in sequence, and the first accommodating groove, the second accommodating groove, the third accommodating groove and the fourth accommodating groove correspond to the positions of the first support member, the second support member, the third support member and the fourth support member, respectively.

[0014] Optionally, at least two adjacently arranged light-emitting units form a light-emitting area, and a plurality of support members are arranged around the light-emitting area; and a shape formed by the plurality of accommodating grooves matches a shape formed by the plurality of support members.

[0015] The present application also discloses a display device, including a display panel. The display device also includes the above-mentioned backlight module, and the backlight module is arranged on the light incident side of the display panel.

[0016] The present application improves the structure of the diffuser plate, and improves the diffuser plate which originally had only a single structure into a diffuser plate with two structures, a plane part and a support part. The plane part is the component which mainly performs the function of the diffuser plate, so that the light is refracted, reflected and scattered in different directions, thereby changing the path of the light and achieving sufficient dispersion of the incident light to produce the effect of optical diffusion. When the diffuser plate is placed above the light board, the support part abuts against the light board, and the support part stands on the light board to form a support for the plane part. After the multiple support parts support the originally thin plane part from multiple different positions, it effectively prevents the plane part from being suspended in the air and falling down in a large area, making the plane part The diffuser panel is not easily deformed; and by arranging a receiving groove at the position of the support member of the light panel corresponding to the diffuser panel, when the diffuser panel is installed on the light panel, the support member can be inserted into the receiving groove so that a part of the support member is fixed in the receiving groove, thereby forming a fixation between the entire diffuser panel and the light panel, and improving the stability of the diffuser panel installation; at the same time, since the receiving groove is provided on the light panel, the installation position between the receiving groove and the support member can be visually easily observed, which is convenient for rapid positioning when installing the diffuser panel; the diffuser panel is not easily displaced, and at the same time, the diffuser panel is installed so as to face the light panel directly, thereby avoiding repeated alignment between the diffuser panel and the light panel, and improving the assembly speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0018] Figure 1 This is a partial schematic diagram of the first embodiment of the backlight module of the present application;

[0019] Figure 2 This is a partial top view of the light board in the first embodiment of the backlight module of this application;

[0020] Figure 3 This is a partial top view of the light board in the second embodiment of the backlight module of this application;

[0021] Figure 4 This is a partial schematic diagram of a third embodiment of the backlight module of the present application;

[0022] Figure 5 This is a partial schematic diagram of a fourth embodiment of the backlight module of the present application;

[0023] Figure 6 This is a partial schematic diagram of a fifth embodiment of the backlight module of the present application;

[0024] Figure 7 This is a schematic diagram of a support member of a sixth embodiment of the backlight module of the present application;

[0025] Figure 8 This is a top view of the light board in the sixth embodiment of the backlight module of this application;

[0026] Figure 9 A top view of a seventh embodiment of the backlight module of the present application;

[0027] Figure 10 FIG. 1 is a schematic diagram of an embodiment of a display device of the present application.

[0028] Among them, 10, display device; 100, backlight module; 200, display panel; 110, lamp board; 111, receiving groove; 112, positioning groove; 113, first receiving groove; 114, second receiving groove; 115, third receiving groove; 116, fourth receiving groove; 120, light-emitting unit; 130, auxiliary light-emitting unit; 140, diffusion plate; 141, support member; 142, transparent part; 143, functional part; 144, reflective layer; 145, card slot; 146, elastic member; 147, first support member; 148, second support member; 149, third support member; 150, fourth support member; 160, plane part; 170, slot; 180, light-emitting area. DETAILED DESCRIPTION

[0029] The present application is described in detail below with reference to the accompanying drawings and optional embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] Figure 1 This is a partial schematic diagram of the first embodiment of the backlight module of this application, as shown Figure 1 As shown, the present application discloses a backlight module 100, including a lamp board 110, on which a plurality of light-emitting units 120 are arranged at intervals, and the backlight module 100 also includes a diffuser plate 140, and the diffuser plate 140 is arranged on the light-emitting surface side of the lamp board 110 corresponding to the position of the lamp board 110, and the diffuser plate 140 includes a plurality of support members 141 and a flat portion 160, the flat portion 160 is arranged parallel to the lamp board 110, and a plurality of support members 141 are arranged at intervals on a side of the flat portion 160 close to the lamp board 110, the support members 141 are perpendicular to the flat portion 160, the height of the support members 141 is equal to the distance between the flat portion 160 and the lamp board 110, and each support member 141 is arranged corresponding to the gap between two adjacent light-emitting units 120; a receiving groove 111 is provided at the position of the lamp board 110 corresponding to the support member 141, and the side of the support member 141 away from the flat portion 160 is embedded in the receiving groove 111.

[0031] The present application improves the structure of the diffuser plate 140, and improves the diffuser plate 140, which originally had only a single structure, into a diffuser plate 140 with two structures, a plane portion 160 and a support member 141. The plane portion 160 is the component that mainly performs the function of the diffuser plate 140, causing the light to be refracted, reflected, and scattered in different directions, thereby changing the path of the light and achieving sufficient dispersion of the incident light to produce an optical diffusion effect; when the diffuser plate 140 is placed above the lamp board 110, the support member 141 abuts against the lamp board 110, and the support member 141 stands on the lamp board 110 to support the plane portion 160. After multiple support members 141 support the originally thin plane portion 160 from multiple different positions, it effectively prevents the plane portion 160 from being suspended in the air over a large area and falling down, making it less likely for the plane portion 160 to deform. ; and by providing a receiving groove 111 at the position of the support member 141 of the diffuser plate 140 corresponding to the lamp board 110, when the diffuser plate 140 is installed on the lamp board 110, the support member 141 can be inserted into the receiving groove 111, so that a part of the support member 141 is fixed in the receiving groove 111, thereby forming a fixation between the entire diffuser plate 140 and the lamp board 110, thereby improving the stability of the installation of the diffuser plate 140; at the same time, since the receiving groove 111 is opened on the lamp board 110, the installation position between the receiving groove 111 and the support member 141 can be visually easily observed, which is convenient for rapid positioning when installing the diffuser plate 140; the diffuser plate 140 is not prone to position displacement, and at the same time, the diffuser plate 140 is installed to face the lamp board 110, thereby avoiding repeated alignment between the diffuser plate 140 and the lamp board 110, thereby improving the assembly speed.

[0032] As shown in Figure 1, the support member 141 is formed by the flat portion 160 protruding toward the light board 110, and is integrally formed with the flat portion 160, so that the support member 141 is not easy to fall off from the flat portion 160, thereby enhancing the service life of the support member 141 and improving the structural stability of the diffuser plate 140; of course, the support member 141 and the flat portion 160 can also be detachably fixed. This application does not impose any specific restrictions on the connection method between the support member 141 and the flat portion 160. In this embodiment, only the support member 141 and the flat portion 160 are integrally formed as an example.

[0033] Figure 2 This is a partial top view of the light board in the first embodiment of the backlight module of this application, as shown in FIG. Figure 2As shown, at least two receiving slots 111 are provided at opposite corners of the light board 110. When the support members 141 are inserted into the receiving slots 111 at the opposite corners of the light board 110, the diffuser plate 140 is restrained in the direction along the diagonal line of the light board 110, making it less likely for the diffuser plate 140 to shift position. This allows the diffuser plate 140 to be aligned with the light board 110 after installation. Furthermore, the receiving slots 111 provided at the opposite corners of the light board 110 are most easily visible, making alignment easier during assembly, avoiding repeated alignment between the diffuser plate 140 and the light board 110, and increasing assembly speed, further improving production efficiency.

[0034] Figure 3 This is a partial top view of the light board in the second embodiment of the backlight module of this application, as shown in FIG. Figure 3 As shown, Figure 3 The embodiment shown is based on Figure 1 The improvement is that the accommodating groove 111 includes at least one positioning groove 112, and the at least one positioning groove 112 is arranged in the middle of the lamp board 110. The positioning groove 112 is cross-shaped, and the cross section of the support member 141 corresponding to the position of the positioning groove 112 matches the shape of the positioning groove 112.

[0035] This embodiment and Figure 1 The difference between the embodiments is that in this embodiment, a cross-shaped positioning groove 112 is set in the middle of the lamp board 110, and the structure of the support member 141 is also improved accordingly, so that the cross section of the support member 141 and the shape of the positioning groove 112 are also cross-shaped. When the cross-shaped support member 141 is partially embedded in the positioning groove 112, the cross-shaped positioning groove 112 will limit the support member 141 from four different directions of the lamp board 110, so that the support member 141 cannot be moved from any direction of the lamp board 110. That is, when the diffuser plate 140 is installed on the lamp board 110, it is only necessary to insert the support member 141 of the diffuser plate 140 into the positioning groove 112 in the middle of the lamp board 110, so that the diffuser plate 140 can be quickly positioned and installed, and there is no need to repeatedly adjust the position, which effectively saves assembly time and improves assembly efficiency, so that the diffuser plate 140 after installation can remain opposite to the lamp board 110, further avoiding the problem of light loss caused by misalignment between the diffuser plate 140 and the lamp board 110.

[0036] Figure 4 This is a partial schematic diagram of the third embodiment of the backlight module of the present application, as shown in FIG. Figure 4 As shown, Figure 4 The embodiment shown is based on Figure 1 The improvement is that a plurality of slots 170 are provided on one side of the planar portion 160 close to the light board 110 , each support member 141 is inserted into the slot 170 and has an interference fit with the slot 170 , and the number of the support members 141 is less than or equal to the number of the slots 170 .

[0037] This embodiment and Figure 1 What is different from the shown embodiment is that in this embodiment, the planar portion 160 and the support member 141 of the diffuser plate 140 are detachable structures. During the actual installation process, multiple support members 141 can be inserted one by one into the slots 170 of the planar portion 160. Through the interference fit between the support members 141 and the slots 170, the support members 141 are fixed in the slots 170 and are not easy to fall off; then the installed diffuser plate 140 is placed on the lamp board 110 for assembly.

[0038] During use, when a partially damaged support member 141 needs to be replaced, only the support member 141 can be replaced without replacing the entire diffusion plate 140, which makes maintenance more convenient and saves material costs.

[0039] Figure 5 This is a partial schematic diagram of the fourth embodiment of the backlight module of the present application, as shown in FIG. Figure 5 As shown, Figure 5 The embodiment shown is based on Figure 1 The improvement is that the support member 141 includes a transparent part 142 and a functional part 143, one side of the light-transmitting part is connected to the planar part 160, and the other side is connected to one side of the functional part 143, and the other side of the functional part 143 is partially embedded in the accommodating groove 111; the height of the light-transmitting part is less than the height of the functional part 143; the outer surface of the functional part 143 is not light-transmitting.

[0040] This embodiment and Figure 1 The difference from the illustrated embodiment is that in this embodiment, the structure of the support member 141 is improved. The support member 141 in this embodiment includes two parts, namely a transparent part 142 located close to the plane part 160, and a functional part 143 located close to the light board 110. Since the light of the light-emitting unit 120 in the working state is emitted from the bottom to the top and diverges in a fan shape when the display panel 200 performs zone dimming, the lower part of the support member 141 is the part that is most likely to be passed through and continued to diverge by the light. In this embodiment, the functional part 143 is set to be opaque, which can effectively prevent the light from passing through the functional part 143 and diffusing to the non-luminous area, resulting in light loss in the luminous area 180. When a part of the light passes through the transparent part 142, since the transparent part 142 itself has a certain thickness, the light will be refracted after passing through. At this time, the light will move closer to the direction of the luminous area 180. This not only enhances the brightness of the luminous area 180 and reduces light loss, but also reduces the dark grid stripes and halo phenomenon formed by the support member 141.

[0041] In addition, the height of the functional portion 143 is smaller than the distance between the plane portion 160 and the light board 110 , and is greater than or equal to two-thirds of the distance between the plane portion 160 and the light board 110 .

[0042] Since when the display panel 200 performs zone dimming, the light of the working light-emitting unit 120 is emitted from bottom to top and diverges in a fan shape, the lower part of the support member 141 is the part that is most likely to be passed through by the light and continue to diverge. Therefore, the height of the functional part 143 is greater than two-thirds of the distance between the plane part 160 and the lamp board 110, so that most of the light diverging from the light-emitting unit 120 to the non-luminous area cannot be diverged to the non-luminous area through the support member 141, thereby improving the brightness of the luminous area 180, and effectively improving the problem of light loss in the luminous area 180 due to the diffusion of light from the luminous area 180 of the lamp board 110 to the non-luminous area.

[0043] Specifically, such as Figure 5 As shown, the functional part 143 is made of a transparent material, the outer surface of the functional part 143 is covered with a reflective layer 144, and a card slot 145 is provided on the side of the functional part 143 close to the light board 110; the light board 110 also includes a plurality of auxiliary light-emitting units 130, the auxiliary light-emitting units 130 are arranged in the accommodating groove 111, and the positions of the auxiliary light-emitting units 130 and the card slots 145 correspond; the auxiliary light-emitting units 130 are embedded in the card slots 145.

[0044] In this embodiment, the functional part 143 itself is made of a transparent material, and a reflective layer 144 is wrapped on the outer surface of the functional part 143, so that the outside of the functional part 143 has a reflective effect; in addition, an auxiliary light-emitting unit 130 is additionally designed in this embodiment. The auxiliary light-emitting unit 130 is arranged directly below the functional part 143. When the diffuser plate 140 is installed on the light board 110, the auxiliary light-emitting unit 130 is embedded through the card slot 145 of the functional part 143 and abuts against the bottom of the accommodating slot 111.

[0045] When the light of the working light-emitting unit 120 is emitted from bottom to top, a part of the light will first be reflected by the reflective layer 144 outside the functional part 143, and the light irradiated on the reflective layer 144 outside the functional part 143 will be reflected back to the light-emitting area 180, thereby improving the brightness of the light-emitting area 180; and the light emitted by the auxiliary light-emitting unit 130 located in the accommodating groove 111 will irradiate the inside of the functional part 143, and the light will diffuse outward from the inside of the functional part 143. Since the reflective layer 144 is provided on the outside of the functional part 143, the light irradiated inside the functional part 143 will be continuously reflected by the reflective layer 144 outside the functional part 143, and will be gathered to the light-transmitting part, and finally emitted from the light-transmitting part. This can not only enhance the brightness of the light-emitting area 180 and reduce light loss, but also reduce the dark grid stripes and halo phenomenon formed by the support 141.

[0046] In addition, in this embodiment, the auxiliary light-emitting unit 130 is arranged in the receiving groove 111. When the diffuser plate 140 is installed on the lamp board 110, the card groove 145 of the functional part 143 can be snapped on the auxiliary light-emitting unit 130 to form a fitting fixation, and the outer wall of the card groove 145 of the functional part 143 is interference fit with the side wall of the receiving groove 111, thus forming an "inside and outside" joint fit and fixation. Since the support member 141 and the flat portion 160 are integrally formed, the entire diffuser plate 140 and the lamp board 110 are fixed, thereby improving the stability of the installation of the diffuser plate 140 and facilitating the rapid assembly between the diffuser plate 140 and the lamp board 110.

[0047] Figure 6 This is a partial schematic diagram of the fifth embodiment of the backlight module of the present application, as shown in FIG. Figure 6 As shown, Figure 6 The embodiment shown is based on Figure 5 The functional portion 143 is made of a light-shielding material, and an elastic member 146 is provided on a side of the functional portion 143 close to the light board 110 , and the elastic member 146 abuts against the bottom of the accommodating groove 111 .

[0048] This embodiment is different from the previous embodiment in that the functional part 143 of this embodiment is made of shading material as a whole. When the MINi LED backlight module 100 performs zone dimming, the light of the light-emitting unit 120 in the working state is emitted from bottom to top and diverges in a fan shape. The functional part 143 at the lower part of the support member 141 blocks most of the light from the light-emitting unit 120 that diffuses to the non-luminous area, thereby improving the contrast and enhancing the display effect of the display panel 200, and effectively improving the problem that the display contrast is reduced and the display effect is affected due to the diffusion of light from the light-emitting area 180 of the lamp board 110 to the non-luminous area.

[0049] In addition, after the diffuser plate 140 and the lamp board 110 are assembled, the part where the diffuser plate 140 actually contacts the lamp board 110 is the elastic member 146, which can be made of elastic foam or other elastic materials. The elastic member 146 realizes a soft connection between the diffuser plate 140 and the lamp board 110. When the diffuser plate 140 is subjected to pressure, the force will be transmitted to the bottom of the accommodating groove 111 through the support member 141. At this time, the elastic member 146 can buffer the force between the support member 141 and the lamp board 110, effectively alleviating the pressure on the diffuser plate 140 and avoiding damage to the diffuser plate 140.

[0050] Figure 7 This is a schematic diagram of a support member of a sixth embodiment of the backlight module of the present application; Figure 8 This is a top view of the light board in the sixth embodiment of the backlight module of this application, as shown Figure 7 and Figure 8 As shown, multiple support members 141 include a first support member 147, a second support member 148, a third support member 149 and a fourth support member 150 connected end to end in sequence, and each light-emitting unit 120 is located in the area surrounded by the first support member 147, the second support member 148, the third support member 149 and the fourth support member 150; multiple accommodating grooves 111 include a first accommodating groove 113, a second accommodating groove 114, a third accommodating groove 115 and a fourth accommodating groove 116 connected end to end in sequence, and the first accommodating groove 113, the second accommodating groove 114, the third accommodating groove 115 and the fourth accommodating groove 116 correspond to the positions of the first support member 147, the second support member 148, the third support member 149 and the fourth support member 150 respectively.

[0051] As shown in Figure 7, the first support member 147, the second support member 148, the third support member 149 and the fourth support member 150 are connected end to end to form a U-shaped structure. When the diffuser plate 140 is placed on the lamp board 110, each light-emitting unit 120 is located in the U-shaped structure, and each light-emitting unit 120 is surrounded by four support members 141. The area of ​​the plane portion 160 supported by the corresponding support member 141 is also larger, so that the force on the entire plane portion 160 is more uniform, the force area of ​​the plane portion 160 is increased, and the damage of the plane portion 160 due to the pressure on the plane portion 160 is effectively avoided, and the structural stability after the diffuser plate 140 and the lamp board 110 are assembled is further improved.

[0052] Of course, the shape formed by the first support member 147, the second support member 148, the third support member 149 and the fourth support member 150 does not have to be a U-shape, it can also be other shapes, such as a rhombus, a parallelogram, etc., which can also achieve the above-mentioned effects. Due to space limitations, they will not be described one by one. This application only takes the U-shaped structure formed by the first support member 147, the second support member 148, the third support member 149 and the fourth support member 150 as an example.

[0053] Figure 9 This is a top view of the seventh embodiment of the backlight module of the present application, as shown Figure 8 As shown, at least two adjacent light-emitting units 120 form a light-emitting area 180 , and a plurality of support members 141 are arranged around the light-emitting area 180 ; the shape formed by the plurality of receiving grooves 111 matches the shape formed by the plurality of support members 141 .

[0054] This embodiment is different from the previous embodiment in that, in this embodiment, a light-emitting area 180 composed of at least two adjacent light-emitting units 120 is surrounded by a plurality of support members 141. In this way, when the diffuser plate 140 is installed on the lamp board 110, the plurality of support members 141 are embedded in the corresponding receiving grooves 111 from different directions of the lamp board 110. The receiving grooves 111 limit the support members 141 from multiple directions, so that after the diffuser plate 140 as a whole is assembled, it is not easy to be positionally displaced relative to the lamp board 110. At the same time, the number of support members 141 used can be saved, thereby reducing costs.

[0055] It should be noted that, in this embodiment, the number of support members 141 provided and the shape thereof are determined according to the number of light-emitting units 120 forming the light-emitting area 180. For example, when the number of light-emitting units 120 in the light-emitting area 180 is two, the number of support members 141 surrounding the light-emitting area 180 may be four, forming a U-shape; when the number of light-emitting units 120 in the light-emitting area 180 is three, the number of support members 141 surrounding the light-emitting area 180 may be three, forming a triangle; this embodiment only uses the case where the number of light-emitting units 120 in the light-emitting area 180 is two, and the number of support members 141 surrounding the light-emitting area 180 is four, and forming a U-shape as an example.

[0056] Figure 10 This is a schematic diagram of an embodiment of the display device of the present application. The present application also discloses a display device 10, including a display panel 200. The display device 10 also includes the above-mentioned backlight module 100, and the backlight module 100 is arranged on the light incident side of the display panel 200.

[0057] The display panel 200 does not emit light by itself, and the backlight module 100 is required to provide a light source for the display panel 200 to emit light normally. The backlight module 100 is set on one side of the light incident surface of the display panel 200 so that the light emitted by the backlight module 100 can pass through the display panel 200, so that the display panel 200 can display normally.

[0058] In the Mini LED backlight module 100, when installing the diffuser plate 140 on the lamp board 110, it is often necessary to install it directly opposite the lamp board 110. However, since the traditional diffuser plate 140 is a relatively thin film, it is easy to produce alignment deviation with the lamp board 110, resulting in light loss. Repeatedly adjusting the position of the diffuser plate 140 to align with the lamp board 110 affects production efficiency.

[0059] Based on the above problems, the present application improves the backlight module 100 in the display device 10, and specifically improves the structure of the diffuser plate 140 in the backlight module 100. The diffuser plate 140, which originally had only a single structure, is improved to a diffuser plate 140 having two structures, a flat portion 160 and a support member 141. By providing a receiving groove 111 at the position of the support member 141 of the diffuser plate 140 corresponding to the light board 110, when the diffuser plate 140 is installed on the light board 110, the support member 141 can be inserted into the receiving groove 111, so that the support member 141 can be inserted into the receiving groove 111. A portion is fixed into the receiving groove 111, thereby forming a fixation between the entire diffuser plate 140 and the lamp board 110, thereby improving the stability of the installation of the diffuser plate 140; at the same time, since the receiving groove 111 is opened on the lamp board 110, the installation position between the receiving groove 111 and the support member 141 can be visually easily observed, which is convenient for rapid positioning when installing the diffuser plate 140; the diffuser plate 140 is not prone to position displacement, and at the same time, the diffuser plate 140 is installed so as to be opposite to the lamp board 110, thereby avoiding repeated alignment between the diffuser plate 140 and the lamp board 110 and improving the assembly speed.

[0060] It should be noted that the inventive concept of this 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 various embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the various embodiments or technical features are combined, the original technical effects will be enhanced.

[0061] The above content is a further detailed description of the present application in conjunction with specific optional implementation methods, and the specific implementation of the present application cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, they can make several simple deductions or substitutions without departing from the concept of the present application, which should be considered to fall within the scope of protection of the present application.

Claims

1. A backlight module, comprising a light board, on which a plurality of light-emitting units are arranged at intervals, characterized in that: The backlight module further includes a diffusion plate, which is arranged on the light-emitting side of the light board at a position corresponding to the position of the light board. The diffusion plate includes a plurality of supporting members and a flat portion. The flat portion is arranged parallel to the light board. A plurality of supporting members are arranged at intervals on a side of the flat portion close to the light board. The supporting members are perpendicular to the flat portion. The height of the supporting members is equal to the distance between the flat portion and the light board, and each supporting member is arranged corresponding to the gap between two adjacent light-emitting units. The lamp panel is provided with a receiving groove at a position corresponding to the support member, and the side of the support member away from the plane portion is embedded in the receiving groove; The support member includes a transparent portion and a functional portion, one side of the transparent portion is connected to the planar portion, and the other side is connected to one side of the functional portion, and the other side of the functional portion is partially embedded in the receiving groove; the height of the transparent portion is smaller than the height of the functional portion; the outer surface of the functional portion is opaque; The functional part is made of a transparent material, the outer surface of the functional part is covered with a reflective layer, and a card slot is provided on a side of the functional part close to the light board; The light board further includes a plurality of auxiliary light-emitting units, the auxiliary light-emitting units are arranged in the receiving grooves, and the positions of the auxiliary light-emitting units correspond to the positions of the card slots; the auxiliary light-emitting units are embedded in the card slots; When the diffusion plate is mounted on the light board, the slot of the functional portion is buckled on the auxiliary light-emitting unit to form a mating fixation.

2. The backlight module according to claim 1, wherein: At least two of the receiving grooves are arranged at opposite corners of the lamp board.

3. The backlight module according to claim 2, wherein: The receiving groove includes at least one positioning groove, at least one positioning groove is arranged in the middle of the lamp board, the positioning groove is cross-shaped, and the cross section of the support member corresponding to the position of the positioning groove matches the shape of the positioning groove.

4. The backlight module according to claim 1, wherein: A plurality of slots are provided on one side of the planar portion close to the light board. Each support member is inserted into the slot and has an interference fit with the slot. The number of the support members is less than or equal to the number of the slots.

5. The backlight module according to claim 1, wherein: The plurality of support members include a first support member, a second support member, a third support member, and a fourth support member connected end to end in sequence, and each of the light-emitting units is located in an area enclosed by the first support member, the second support member, the third support member, and the fourth support member; The multiple accommodating grooves include a first accommodating groove, a second accommodating groove, a third accommodating groove and a fourth accommodating groove connected end to end in sequence, and the first accommodating groove, the second accommodating groove, the third accommodating groove and the fourth accommodating groove correspond to the positions of the first support member, the second support member, the third support member and the fourth support member respectively.

6. The backlight module according to claim 1, wherein: At least two adjacently arranged light-emitting units form a light-emitting area, and a plurality of support members are arranged around the light-emitting area; The shape formed by the plurality of accommodating grooves matches the shape formed by the plurality of supporting members.

7. A display device comprising a display panel, characterized in that: The display device further comprises a backlight module according to any one of claims 1 to 6, wherein the backlight module is arranged on a light incident side of the display panel.

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