CN216387674U - Backlight module and display device - Google Patents

Abstract

The application provides a backlight module, backlight module includes backplate, light-emitting component and optical component. The backboard comprises a substrate and a clamping piece, wherein the clamping piece is in an open ring shape with an opening, a first groove in an open ring shape is formed in the inner side of the clamping piece, the substrate is inserted into the first groove of the clamping piece, and part of the side wall of the substrate is wrapped by the first groove so that the substrate is clamped in the annular space of the clamping piece. The light-emitting component is arranged on the substrate, and the optical component is arranged on one side of the light-emitting component far away from the substrate. The application provides backlight unit and display device will the base plate with the cooperation and formation are established to the folder clamp the backplate, the process of buckling does not exist in the backplate that so forms, can not produce the arch, has avoided light emitting component with optical component contacts and produces optical defects such as shadow, has improved optical quality.

Description

Backlight module and display device

Technical Field

The application relates to the technical field of display, in particular to a backlight module and a display device.

Background

With the rapid development of the liquid crystal display technology using the Mini LED as the backlight, the display products of the Mini LED backlight technology have been applied to the commercial fields of ultra-large screen high definition display, such as monitoring and commanding, high definition broadcasting, high-end cinema, medical diagnosis, advertisement display, conference exhibition, office display, virtual reality, etc.

Compared with an OLED display product, the display product of the Mini LED backlight technology has the advantages of lower cost, higher brightness and longer service life; compared with an LCD display product, the display product of the Mini LED backlight technology is lighter and thinner in whole machine, has better High Dynamic Range (HDR) performance, higher contrast and lower power consumption, and the display effect of the display product of the Mini LED backlight technology can be comparable to that of an OLED display product, so that extremely High viewing experience is brought to consumers.

At present, in the manufacturing process of the back plate of the display product of the Mini LED backlight technology, the periphery of the metal plate needs to be bent to form the metal back plate, and the bent metal back plate is matched with the rubber frame to fix the display panel.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a backlight module and a display device, a substrate and a clamping piece are clamped and matched to form a backboard, and the backboard formed in such a way does not have a bending process, so that a bulge cannot be generated, optical defects such as shadows and the like caused by contact between a light-emitting assembly and an optical assembly are avoided, and the optical quality is improved.

One aspect of the present application provides a backlight module including a back plate, a light emitting assembly, and an optical assembly. The backboard comprises a substrate and a clamping piece, wherein the clamping piece is in an open ring shape with an opening, a first groove in an open ring shape is formed in the inner side of the clamping piece, the substrate is inserted into the first groove of the clamping piece, and part of the side wall of the substrate is wrapped by the first groove so that the substrate is clamped in the annular space of the clamping piece. The light-emitting component is arranged on the substrate, and the optical component is arranged on one side of the light-emitting component far away from the substrate.

The application provides a backlight unit will the base plate with the folder presss from both sides establishes the cooperation and forms the backplate, the process of buckling does not exist in the backplate that so forms to can not produce the arch, avoided light emitting component and optical component to produce the contact and optical defects such as shadow appear, improved optics taste.

The display panel is located on one side of the optical assembly, which is far away from the light-emitting assembly, and is supported on the clamping piece.

The application provides a display device, will the base plate with the cooperation is established to the folder clamp and is formed the backplate, the process of buckling does not exist in the backplate that so forms to can not produce the arch, avoided light emitting component and optical component to produce the contact and optical defects such as shadow appear, improved optics taste. In addition, the display panel is supported on the clamping piece, so that a rubber frame is avoided being used for fixing the display panel, the light weight of the display device is realized, and the frameless display effect can be achieved.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure view of a backlight module according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a clip according to an embodiment of the present application.

Fig. 3 is a cross-sectional view of a clip according to an embodiment of the present application.

Fig. 4 is a schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present application.

Description of reference numerals: 100-a backlight module; 10-a back plate; 11-a substrate; 12-a clip; 121-opening; 122 — a first groove; 20-a light emitting component; 30-an optical component; 123-a first end portion; 124-a second end; 125-a first clamping portion; 126-a second clamping portion; 127-a connecting portion; 111-a first surface; 112-a second surface; 1221-a first inner wall surface; 1222-a second inner wall surface; 1223-a third inner wall surface; 40-a first connector; 50-a second connector; 200-a display device; 210-a display panel; 210 a-a display area; 210 b-non-display area; 128-a second groove; 220-fixing elements.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

In the description of the present application, the terms "first", "second", etc. are used for distinguishing different objects and not for describing a particular order, and further, the terms "upper", "inner", etc. indicate orientations or positional relationships based on those shown in the drawings only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present application.

Throughout the description of the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., as meaning fixedly attached, detachably attached, or integrally attached; they may be connected directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

For purposes of clarity, the various features in the various drawings of the present application are not drawn to scale. Moreover, certain well-known elements may not be shown in the figures.

Referring to fig. 1 to 3 together, fig. 1 is a schematic cross-sectional structure diagram of a backlight module 100 according to an embodiment of the present disclosure, fig. 2 is a schematic structural diagram of a clip 12 according to an embodiment of the present disclosure, and fig. 3 is a cross-sectional view of the clip 12. As shown in fig. 1 to 3, the backlight module 100 includes a back plate 10, a light emitting element 20 and an optical element 30. The backboard 10 comprises a substrate 11 and a clip 12, wherein the clip 12 is in an open ring shape with an opening 121, a first groove 122 in the open ring shape is arranged on the inner side of the clip 12, the substrate 11 is inserted into the first groove 122 of the clip 12, and part of the side wall of the substrate 11 is wrapped by the first groove 122, so that the substrate 11 is clamped in the annular space of the clip 12. The light emitting element 20 is disposed on the substrate 11, and the optical element 30 is disposed on a side of the light emitting element 20 away from the substrate 11.

The backlight module 100 provided by the embodiment of the application will the substrate 11 with the folder 12 the first groove 122 is clamped and matched to form the backboard 10, so forming the backboard 10 has no bending process, and no protrusion is generated, the light emitting assembly 20 and the optical assembly 30 do not contact, so that optical defects such as shadow and the like are avoided, and the optical quality is improved.

In some embodiments, the light emitting assembly 20 includes a supporting plate, and a plurality of Mini LED (Mini light emitting diode) beads (not shown in the figure), the Mini LED beads are distributed on the supporting plate in an array, the supporting plate is disposed close to the substrate 11 compared to the Mini LED beads, the supporting plate is further provided with an active matrix driving circuit for driving the Mini LED beads to emit light, and the light emitting assembly 20 is configured to provide backlight for the display panel.

In some embodiments, the optical assembly 30 includes a reflective sheet, a light guide plate and an optical film (not shown), the light guide plate has a light emitting surface and a light incident surface that are opposite to each other, the optical film is disposed on one side of the light emitting surface of the light guide plate, the reflective sheet is disposed on one side of the light incident surface of the light guide plate, and the reflective sheet is disposed closer to the light emitting assembly 20 than the optical film. The optical film may include a prism sheet, a brightness enhancement film, and the like. The reflector plate is used for reflecting light rays emitted by the Mini LED lamp beads, so that the light utilization rate of the light-emitting component 20 is enhanced, and the light-emitting intensity is improved. The light incident surface of the light guide plate is used for receiving and guiding the light reflected by the reflector plate, so that the light can uniformly emit light from the light emergent surface of the light guide plate, the light incident surface of the light guide plate can be provided with a plurality of grooves, and the grooves are used for accommodating the light reflected by the reflector plate, so that the reflected light is easier to scatter and has a better light scattering effect, and the light emitted from the light emergent surface of the light guide plate has a more uniform light emitting effect.

The thickness of the portion of the clip 12 protruding from the substrate 11 in the direction perpendicular to the substrate 11 is greater than the sum of the thicknesses of the light emitting element 20 and the optical element 30, the portion protruding from the substrate 11 and the substrate 11 form an accommodating space, and the light emitting element 20 and the optical element 30 are accommodated in the accommodating space. The thickness of the portion protruding from the substrate 11, the thickness of the light emitting element 20, and the thickness of the optical element 30 are the dimensions of the portion protruding from the substrate 11, the light emitting element 20, and the optical element 30 in the direction perpendicular to the substrate 11, respectively.

Referring again to fig. 2, as shown in fig. 2, the clip member 12 includes a first end 123 and a second end 124 at the opening 121, and the first groove 122 extends from the first end 123 to the second end 124 at the inner side of the clip member 12.

By arranging the first groove 122 to extend from the first end 123 to the second end 124 of the clip 12, the area of the substrate 11 wrapped by the first groove 122 is larger, and the area of the substrate 11 clamped by the clip 12 is larger, so that the connection between the substrate 11 and the clip 12 is more stable.

In some embodiments, as shown in fig. 1, the clip 12 includes a first clamping portion 125, a second clamping portion 126, and a connecting portion 127 connecting the first clamping portion 125 and the second clamping portion 126, the first clamping portion 125, the second clamping portion 126, and the connecting portion 127 form the clip 12 having the first groove 122, the first clamping portion 125 abuts against a first surface of the substrate 11 so that a first inner wall surface of the first groove 122 abuts against the first surface, the second clamping portion 126 abuts against a second surface of the substrate 11 opposite to the first surface so that a second inner wall surface of the first groove 122 abuts against the second surface, and the connecting portion 127 abuts against a sidewall of the substrate 11 so that a third inner wall surface of the first groove abuts against the sidewall of the substrate 11.

The first clamping portion 125, the second clamping portion 126 and the connecting portion 127 can be integrally formed, so as to improve the manufacturing efficiency of the back plate 10 and the backlight module 100. Obviously, the first clamping portion 125, the second clamping portion 126 and the connecting portion 127 can also be assembled and fixed to form the clip 12, for example, the first clamping portion 125, the second clamping portion 126 and the connecting portion 127 can be fixedly connected by bonding, screwing, riveting, etc. to form the clip 12.

The first clamping portion 125 of the clamping member 12 cooperates with the substrate 11 to form a receiving space for receiving the light emitting element 20 and the optical element 30.

The thickness of the first clamping portion 125 is greater than the sum of the thicknesses of the light emitting element 20 and the optical element 30, so that the light emitting element 20 and the optical element 30 disposed on the substrate 11 can be completely accommodated in the accommodating space formed by the first clamping portion 125 and the substrate 11, that is, the portion of the clip 12 protruding from the substrate 11 along the direction perpendicular to the substrate 11 refers to the portion of the first clamping portion 125. The thickness of the first clamping portion 125, the thickness of the light emitting element 20, and the thickness of the optical element 30 are the thickness of the first clamping portion 125, the thickness of the light emitting element 20, and the dimension of the optical element 30 in the direction perpendicular to the substrate 11 (e.g., the Y-axis direction in fig. 1).

In some embodiments, as shown in fig. 1, the first surface 111 may be a surface of a side of the substrate 11 where the light emitting element 20 is disposed, and the second surface 112 is a surface opposite to the first surface 111. Obviously, in other embodiments, the second surface may be a surface of the substrate 11 on a side where the light emitting assembly 20 is disposed.

In some embodiments, at least one first connecting member 40 is disposed on an inner wall of the first groove 122 (as shown in fig. 2 and 3), at least one second connecting member 50 is disposed on the base plate 11 (as shown in fig. 1), and the at least one second connecting member 50 corresponds to the at least one first connecting member 40 respectively after the base plate 11 is inserted into the first groove 122 and is connected in a matching manner, so as to increase the connection stability between the base plate 11 and the clip 12.

In some embodiments, as shown in fig. 1, when the first surface 111 is a surface of the substrate 11 on a side where the light emitting element 20 is disposed, and the second surface 112 is a surface opposite to the first surface 111, the second connector 50 is located on the second surface 112 of the substrate 11 and is close to a sidewall of the substrate 11, and the first connector 40 is located on the second inner wall 1222 of the first recess 122.

The second connecting member 50 is disposed on the second surface 112 of the substrate 11 and the first connecting member 40 is disposed on the second inner wall 1222 of the first groove 122, so that the second connecting member 50 and the first connecting member 40 can be connected more tightly by the pressure generated by the weight of the light emitting element 20, the optical element 30 and the substrate 11, and the substrate 11 and the clip 12 can be connected more firmly.

In other embodiments, the second connecting member 50 may be disposed on the first surface 111 of the substrate 11, and the first connecting member 129 is disposed on the first inner wall surface 1221 of the first groove 122; alternatively, the second connection member 50 may be disposed on the sidewall surface of the substrate 11, and the first connection member 129 is disposed on the third inner wall surface 1223 of the first groove 122.

In some embodiments, the first connector 40 is one of a male portion and a female portion, and the second connector 50 is the other of the male portion and the female portion. The shape and the size of the concave part are matched with those of the convex part, so that the convex part is accommodated in the concave part and is clamped and connected with the concave part. In some embodiments, the contours of the protrusions and the recesses may be arcuate, e.g., semi-circular, semi-elliptical, etc. By providing the convex portion and the concave portion with arc-shaped profiles, the substrate 11 and the clip 12 can be prevented from being damaged due to stress concentration when the first connecting member 50 is engaged with the second connecting member 60.

Obviously, in other embodiments, the contour of the convex portion and the concave portion may also have other shapes, such as square, trapezoid, polygon, etc.

As shown in fig. 1, when the first connecting member 40 is the convex portion, the second connecting member 50 is the concave portion, the first connecting member 40 may be an independent component or an extension portion of the clip 12, and the first connecting member 40 is engaged with the second connecting member 50 to increase the connection stability between the substrate 11 and the clip 12.

When the first connecting member 40 is the concave portion, the second connecting member 50 is the convex portion, and the second connecting member 50 may be a separate member or an extension of the base plate 11.

By engaging the at least one first connecting member 40 with the at least one second connecting member 50, not only the connection stability between the base plate 11 and the clip 12 can be increased, but also the engagement connection can be achieved in a manner that facilitates the assembly of the base plate 11 and the clip 12.

In some embodiments, a predetermined number of the first connectors 40 in the at least one first connector 40 are convex portions, the rest of the first connectors 40 are concave portions, a predetermined number of the second connectors 50 in the at least one second connector 50 are concave portions, the rest of the second connectors 50 are convex portions, the predetermined number of the first connectors 40 are engaged with the predetermined number of the second connectors 50, and the rest of the first connectors 40 are engaged with the rest of the second connectors 50.

In some embodiments, the base plate 11 has a rectangular shape, and three side walls of the base plate 11 are wrapped by the first groove 122, so that the base plate 11 is clamped in the annular space of the clamping member 12. By arranging the substrate 11 in a rectangular shape, when the substrate 11 and the clip 12 are assembled, the substrate 11 is more easily inserted into the first groove 122 of the clip 12 through the opening 121, so that the assembly is more convenient.

In some embodiments, the substrate 11 may be made of an inorganic non-metallic material, such as glass, ceramic, quartz, etc. The glass, ceramic, and quartz have good heat dissipation, high corrosion resistance, and chemical stability, so that heat generated by the light emitting element 20 can be dissipated more quickly through the substrate 11 to prevent overheating of the light emitting element 20, the substrate 11 has high corrosion resistance to protect the light emitting element 20 and the optical element 30 housed in the backplate 10 from chemical corrosion or environmental erosion, and the substrate 11 itself has chemical inertness and does not cause chemical reaction with the light emitting element 20 and the optical element 30 to damage the light emitting element 20 and the optical element 30. In addition, because the substrate 11 is formed by independent molding, the flatness of the substrate 11 is high, and the optical assembly 30 and the light emitting assembly 20 can be further prevented from contacting due to the unevenness of the substrate 11, so that optical defects such as shadows and the like are avoided.

In some embodiments, the material of the clip 12 may be a polymer material, such as PC (polycarbonate), ABS (acrylonitrile, butadiene, styrene terpolymer), PMMA (polymethyl methacrylate), and the like. The clip 12 formed by a polymer material has a certain elasticity, when the substrate 11 and the clip 12 are assembled, the clip 12 can be pulled away from the opening 121, and then the substrate 11 is inserted into the first groove 122 from the opening 121, so that the substrate 11 can be easily and quickly clamped in the clip 12. In addition, the clip 12 made of a polymer material has a low density and a low weight, so that the backlight module 100 can be light-weighted.

Referring to fig. 4, fig. 4 is a side view of a display device 200 according to an embodiment of the disclosure. As shown in fig. 4, the display device 200 includes a display panel 210 and the backlight module 100 provided in any of the embodiments, the display panel 210 is located on a side of the optical assembly 30 away from the light emitting assembly 20, and is supported on the clip 12.

As mentioned above, the thickness of the portion of the clip 12 protruding from the substrate 11 in the direction perpendicular to the substrate 11 is greater than the sum of the thicknesses of the light emitting element 20 and the optical element 30, the portion protruding from the substrate 11 and the substrate 11 form a receiving space, and the light emitting element 20 and the optical element 30 are completely received in the receiving space. Therefore, the peripheral portion of the display panel 210 will directly attach to the clip 12 and be supported on the clip 12 without pressing the light emitting element 20 and the optical element 30.

As shown in fig. 4, the display panel 210 includes a display region 210a and a non-display region 210b, the non-display region 210b is located at a periphery of the display region 210a and surrounds the display region 210a, specifically, the non-display region 210b of the display panel 210 is supported on the clip 12, and the display region 210a substantially corresponds to the light emitting element 20 and the optical element 30, so as to cooperate with the light emitting element 20 and the optical element 30 to realize a display function. Wherein the display area 210a and the light emitting component 20 and the optical component 30 substantially correspond to each other: the projection of the light emitting assembly 20 and the optical assembly 30 on the display panel 210 substantially coincides with the display area 210 a.

The display device 200 provided in the embodiment of the application has the advantages that the display panel 210 is arranged on the clamping piece 12, the clamping piece 12 can support and fix the display panel 210, the need of configuring an additional glue frame to support and fix the display panel 210 is avoided, the thickness occupied by the glue frame in the display device 200 is reduced, the display device 100 is light and thin, the manufacturing cost of the display device 200 can be reduced, the production efficiency can be improved, and the frameless display effect can be achieved.

The display panel 210 is supported on the clip 12, and seals an opening of an accommodating space formed by the substrate 11 of the backlight module and the clip 12 to form a sealed space with the clip 12 and the substrate 11, and the light emitting assembly 20 and the optical assembly 30 are located in the sealed space.

In some embodiments, the display panel 210 includes a first polarizer, a color filter substrate, an array substrate, and a second polarizer (not shown), the color filter substrate is disposed opposite to the array substrate, the first polarizer is disposed on a side of the array substrate away from the color filter substrate, the second polarizer is disposed on a side of the color filter substrate away from the array substrate, and the first polarizer is disposed closer to the optical assembly 30 than the second polarizer.

In some embodiments, as shown in fig. 4, a second groove 128 is disposed on a surface of the clip 12 facing the display panel 210, a fixing member 220 is disposed in the second groove 128, and the fixing member 220 is fixedly connected to the clip 12 and the display panel 210, respectively, so that the display panel 210 is attached to the clip 12. By arranging the second groove 128 on the surface of the clip 12 facing the display panel 210 and arranging the fixing member 220 in the second groove 128, the display panel 210 can be attached to the clip 12 while being fixedly connected to the clip 12, thereby further reducing the thickness of the display device 200.

In some embodiments, as shown in fig. 1, the second groove 128 is disposed on a surface of the first clamping portion 125 of the clip 12 away from the substrate 11, and the clip 12 is fixedly connected to the display panel 210 by the fixing member 220 disposed in the second groove 128, so as to support the display panel 210.

In some embodiments, the fixing member 220 includes a collodion, and opposite sides of the collodion are adhered to the second groove 128 and the display panel 210, respectively. The collodion is used for fixing the display panel 210 on the clamping piece 12, so that the operation is simple and convenient, the installation is easy, in addition, the collodion has a buffer effect, and the problem that the display panel 210 is cracked and damaged due to collision with the clamping piece 12 in the process of carrying or installing the display device 200 is solved.

In some embodiments, the second groove 128 is on the surface of the clip 12 facing the display panel 210 and extends from the first end 123 to the second end 124, and the collodion is disposed in the second groove 128 and extends from the first end 123 to the second end 124, so that the bonding area of the display panel 210 and the clip 12 to the collodion is larger, and the connection between the display panel 210 and the clip 12 is more stable.

In other embodiments, a plurality of the second grooves 128 may be disposed at intervals on the surface of the clip 12 facing the display panel 210, for example, the plurality of second grooves 128 are disposed at intervals on the surface of the clip 12 facing the display panel 210 along the extending direction from the first end 123 to the second end 124, and the collodion is disposed in each of the plurality of second grooves 128.

In some other embodiments, the display panel 210 may be further fixed to the clip 12 by screwing or snapping, for example, when the display panel 210 is disposed on the first clamping portion 125, the first clamping portion 125 is provided with at least one threaded hole, a portion of the display panel 210 corresponding to the first clamping portion 125 is also provided with an equal number of at least one threaded hole, and at least one bolt is screwed into the at least one threaded hole of the display panel 210 and the clip 12, so as to achieve the fixed connection between the display panel 210 and the clip 12; or, a convex body is arranged on the surface of the display panel 210 facing the clip 12, the shape and size of the convex body are adapted to the shape and size of the second groove 128, when the display panel 210 and the clip 12 are installed, the position of the convex body corresponds to that of the second groove 128, and the convex body is accommodated in the second groove 128, so that the display panel 210 is fixedly connected with the clip 12.

The display panel 210 may be a TN (Twisted Nematic) display panel, an IPS (In Plane Switching) display panel, a VA (Vertical Alignment) display panel, an MVA (Multi Domain Vertical Alignment) display panel, or the like, and may be other types of display panels.

The foregoing is an implementation of the embodiments of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the embodiments of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims (10)

1. A backlight module is characterized in that the backlight module comprises:

the backboard comprises a substrate and a clamping piece, wherein the clamping piece is in an open ring shape with an opening, a first groove in the open ring shape is formed in the inner side of the clamping piece, the substrate is inserted into the first groove of the clamping piece, and part of the side wall of the substrate is wrapped by the first groove so that the substrate is clamped in the annular space of the clamping piece;

the light-emitting component is arranged on the substrate; and

and the optical assembly is arranged on one side of the light-emitting assembly, which is far away from the substrate.

2. The backlight module according to claim 1, wherein the clip comprises a first end and a second end at the opening, and the first groove extends from the first end to the second end at an inner side of the clip.

3. The backlight module according to claim 1, wherein the clip comprises a first clamping portion, a second clamping portion and a connecting portion connecting the first clamping portion and the second clamping portion, the first clamping portion, the second clamping portion and the connecting portion form the clip with the first groove, the first clamping portion abuts against a first surface of the substrate so that a first inner wall surface of the first groove is attached to the first surface, the second clamping portion abuts against a second surface of the substrate opposite to the first surface so that a second inner wall surface of the first groove is attached to the second surface, and the connecting portion abuts against a side wall of the substrate so that a third inner wall surface of the first groove is attached to the side wall of the substrate.

4. The backlight module as claimed in claim 3, wherein the inner wall of the first recess is provided with at least one first connecting member, the substrate is provided with at least one second connecting member, and the at least one second connecting member is respectively corresponding to the at least one first connecting member after the substrate is inserted into the first recess and is connected with the at least one first connecting member in a mutually engaged manner.

5. A backlight module according to claim 4, wherein the first connector is one of a convex portion and a concave portion, and the second connector is the other of the convex portion and the concave portion.

6. The backlight module according to claim 4, wherein the first surface is a surface of the substrate on a side where the light emitting elements are disposed, the second surface is a surface opposite to the first surface, the second connecting member is located on the second surface of the substrate and close to the sidewall of the substrate, and the first connecting member is located on a second inner wall surface of the first groove.

7. The backlight module as claimed in claim 3, wherein the first clamping portion of the clip cooperates with the substrate to form a receiving space for receiving the light emitting assembly and the optical assembly.

8. The backlight module as claimed in claim 1, wherein the substrate has a rectangular shape, and three side walls of the substrate are wrapped by the first groove such that the substrate is clamped in the annular space of the clamping member.

9. A display device, comprising a display panel and the backlight module as claimed in any one of claims 1 to 8, wherein the display panel is disposed on a side of the optical assembly away from the light-emitting assembly and supported on the clip.

10. The display device according to claim 9, wherein a second groove is formed on a surface of the clip facing the display panel, and a fixing member is disposed in the second groove and is fixedly connected to the clip and the display panel, respectively, so that the display panel is fixedly connected to the clip after being attached to the display panel.

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