CN210244016U - Backlight module and display device - Google Patents

Abstract

The utility model discloses a backlight module and display device, backlight unit includes backlight unit, outline and first side latch fitting, backlight unit includes backplate and first switching frame, the backplate links to each other with first switching frame is fixed, be equipped with the light guide plate on the backplate, light guide plate and first switching frame are located the relative both sides of backplate respectively, the homonymy at the backplate is established to outline and light guide plate, the outline links to each other so that the outline links to each other with the backplate is fixed through first switching frame with first switching frame is fixed. According to the utility model discloses a backlight unit, the assembly is reliable, stable in structure, and is convenient for simplify the equipment process, promotes production efficiency.

Description

Backlight module and display device

Technical Field

The utility model belongs to the technical field of the display technology and specifically relates to a backlight module and display device are related to.

Background

With the continuous improvement of the demand of users for electronic products, the touch television all-in-one machine becomes one of indispensable electrical appliances in daily life, and is also more and more widely applied to various scenes.

However, in the related art, a display product such as a touch display device requires a large number of parts, a complex structure, complex production and processing, time consumption, and a complex manufacturing process, and cannot control appearance defects of the product well, and the risk of appearance defects of the product is high, so that the production efficiency of the product is low, and the cost and the price of a single product are high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a backlight module, backlight module assembles reliably, and is convenient for simplify the assembling process, promotes production efficiency.

The utility model discloses still provide a display device who has above-mentioned backlight unit.

According to the utility model discloses backlight unit of first aspect, include: the backlight assembly comprises a back plate and a first switching frame, the back plate is fixedly connected with the first switching frame, a light guide plate is arranged on the back plate, and the light guide plate and the first switching frame are respectively positioned at two opposite sides of the back plate; the outer frame and the light guide plate are arranged on the same side of the back plate, and the outer frame is fixedly connected with the first switching frame so that the outer frame is fixedly connected with the back plate through the first switching frame.

According to the backlight module, the first switching frame is arranged, the outer frame is fixedly connected with the first switching frame, so that the outer frame is fixedly connected with the backboard through the first switching frame, firm installation of the outer frame is guaranteed, the first switching frame can support the backboard, and the structural stability of the backlight module is improved; meanwhile, in the assembling process of the backlight module, the times of turning over the outer frame and the backlight assembly can be reduced, the use times of adopting an auxiliary tool is reduced, the processing tool of the backlight module is effectively simplified, the production efficiency is improved, and the production cost is reduced.

According to some embodiments of the present invention, the outer frame comprises a first face frame located above the back plate and a first side frame located at a side of the first face frame and enclosing the back plate; the first junction frame comprises a second face frame and a second side frame located on the side portion of the second face frame, the first side frame comprises a first extending portion extending towards the back plate and wrapping the outer side of the second side frame, and the first extending portion is connected with the second side frame.

According to some embodiments of the present invention, the backlight module further comprises: the first extension part and the second side frame are connected through the first side locking part in a locking mode.

According to some embodiments of the present invention, the first side locking member is a side locking screw, the first extending portion is formed with a first through hole, the second side frame is formed with a first threaded connection hole, and the side locking screw is inserted into the first through hole and is in threaded engagement with the first threaded connection hole.

According to some embodiments of the utility model, the second side frame by the outward flange of second face frame to the outline direction extends, so that the second side frame with inject the bearing groove that has accommodation space between the second face frame, the backplate has border portion and establishes the edge of border portion and orientation the turn-ups portion that first face frame extends, border portion with turn-ups portion all install in the bearing groove.

According to some embodiments of the present invention, the backlight module further comprises: first back of the body latch fitting, the second face frame with the border portion passes through first back of the body latch fitting locking connection, first back of the body latch fitting is first back of the body latch fitting screw, be formed with the second through-hole on the second face frame, be formed with second threaded connection hole in the border portion, first back of the body latch fitting screw is worn to locate second through-hole and screw-thread fit in second threaded connection hole.

According to some embodiments of the invention, the first bezel comprises a first limiting portion extending away from the first side frame and extending above the back plate; the back plate is provided with a backlight film material, and the edge of the backlight film material is clamped between the first limiting part and the back plate.

According to some embodiments of the utility model, be formed with the arch that is used for the location in the border portion, protruding with backplate fixed connection and with turn-ups portion interval sets up, be provided with the membrane material in a poor light on the backplate, be in a poor light have on the membrane material with protruding location complex location is perforated, be formed with on the light guide plate with protruding location complex constant head tank.

According to some embodiments of the invention, the backlight assembly further comprises: the back plate comprises four flanging parts surrounding the edge part, the second switching frame is arranged corresponding to one flanging part, the first switching frame is arranged corresponding to the other three flanging parts, the second switching frame and the outer frame are positioned on the same side of the back plate, the second switching frame comprises a first connecting part, a second connecting part and a second limiting part, the first connecting part and the second limiting part are positioned on the inner sides of the corresponding flanging parts, the second limiting part extends to the upper side of the backlight film material, and the second connecting part is positioned on the outer sides of the corresponding flanging parts; second side latch fitting, first side frame includes the orientation the backplate extends and the parcel is in the third extension in the second connecting portion outside, be formed with the third through-hole on the third extension, be formed with third threaded connection hole on the second connecting portion, second side latch fitting is worn to locate third through-hole and screw-thread fit are in third threaded connection hole.

According to some embodiments of the invention, the backlight assembly further comprises: the positive locking piece locks the first connecting portion and the back plate from the upper portion of the second switching frame, the positive locking piece is a positive locking screw, a fourth through hole is formed in the first connecting portion, a fourth threaded connecting hole is formed in the back plate, and the positive locking screw penetrates through the fourth through hole and is in threaded fit with the fourth threaded connecting hole.

According to some embodiments of the present invention, the backlight module further comprises: the second back locking piece, the second side frame with first frame passes through second back locking piece locking connection.

According to some embodiments of the utility model, the second back locking piece is second back locking screw, be formed with the fifth through-hole on the second side frame, be formed with fifth threaded connection hole on the first face frame, second back locking screw is worn to locate fifth through-hole and screw-thread fit in fifth threaded connection hole.

According to the utility model discloses display device of second aspect includes: the display screen and the backlight module according to the above first aspect of the present invention, the outer frame includes a first face frame located above the back plate and a first side frame located at a side portion of the first face frame and enclosing the back plate; the display screen is mounted on the first face frame of the outer frame.

According to the utility model discloses a display device, through adopting foretell backlight unit, the assembly is reliable, is convenient for promote machining efficiency.

According to some embodiments of the present invention, the outer frame further includes a second extension portion extending toward the direction of the display screen, and the display screen is accommodated in the first face frame and the accommodating space defined by the second extension portion.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;

FIG. 2 is another schematic structural view of the display device shown in FIG. 1;

fig. 3 is an exploded view of the display device shown in fig. 2;

FIG. 4 is a partial cross-sectional view taken along line A-A of FIG. 2;

FIG. 5 is another partial cross-sectional view taken along line A-A of FIG. 2;

FIG. 6 is a partial cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is another partial cross-sectional view taken along line B-B of FIG. 2;

FIG. 8 is a partial cross-sectional view taken along line C-C of FIG. 2;

FIG. 9 is another partial cross-sectional view taken along line C-C of FIG. 2;

FIG. 10 is a partial cross-sectional view taken along line D-D of FIG. 2;

FIG. 11 is another partial cross-sectional view taken along line D-D of FIG. 2;

FIG. 12 is an assembly schematic view of the back plate, the light guide plate and the backlight film shown in FIG. 3;

FIG. 13 is an enlarged view of section E circled in FIG. 12;

FIG. 14 is an exploded view of the backlight, light guide plate and backlight film shown in FIG. 12;

FIG. 15 is an enlarged view of section F circled in FIG. 14;

fig. 16 is a partial cross-sectional view of a display device according to another embodiment of the present invention.

Reference numerals:

a display device 200;

a display screen 101; a touch glass 1011; liquid crystal glass 1012; a display screen assembly 102;

a backlight module 100; a central axis 100 a;

a backlight assembly 1;

a back plate 11; a first transfer frame 12; a reflection plate 13; a light guide plate 14; a backlight film material 15; a light source 16;

a second transfer frame 17; a second side lock 18; a positive lock 19;

a burring 110; a positioning boss 111; a sub-edge 112; a rim portion 113;

the second threaded connection hole 113 a;

a carrier tank 120; a second bezel 121; a second side frame 122;

a second through hole 121 a; the first threaded connection hole 122 a; a fifth through hole 122 b;

a positioning groove 140; positioning the perforations 150;

a light source unit 161; a mounting plate 162;

a second stopper 171; a first connection portion 172; the second connection portion 173; a positive lock screw 190;

the third threaded connection hole 173 a;

an outer frame 2; a positioning groove 20; a first outer rim 20 a; a second outer frame 20 b;

a first face frame 21; a first side frame 22; a fifth screw coupling hole 21 a;

a first stopper 211; a first extension part 221; a second extension 222; the third extension 223;

a first through hole 221 a; the third through hole 223 a;

a first side locking piece 3; a side lock screw 30;

a first back latch 4; a first lockback screw 40;

a second back latch 5; a second lockback screw 50.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

A backlight module 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 16.

As shown in fig. 1 to 4, the backlight module 100 includes a backlight assembly 1 and an outer frame 2, the backlight assembly 1 includes a back plate 11 and a first adapting frame 12, the back plate 11 is fixedly connected to the first adapting frame 12, a light guide plate 14 is disposed on the back plate 11, and the light guide plate 14 and the first adapting frame 11 are respectively disposed at two opposite sides of the back plate 11, so as to save an installation space at a side of the back plate 11 where the light guide plate 14 is located, and facilitate installation of components on the back plate 11; for example, the first relay bezel 11 may be disposed on a first side (e.g., a lower side in fig. 4) of the rear panel 11, and the light guide plate 14 may be disposed on a second side (e.g., an upper side in fig. 4) of the rear panel 11, the first side being disposed opposite to the second side. The outer frame 2 and the light guide plate 14 are disposed on the same side of the back plate 11, for example, the outer frame 2 and the light guide plate 14 may be both located on the second side of the back plate 11; the outer frame 2 is fixedly connected with the first adapting frame 11 so that the outer frame 2 is fixedly connected with the back plate 11 through the first adapting frame 11, so that the backlight module 100 can be formed into a whole, and no direct connection relation exists between the outer frame 2 and the back plate 11.

From this, for among the conventional art, the outline adopts back lock screw snap-on in the backplate, leads to in the equipment process, for the installation of back lock screw, needs upset outline and backlight unit, adopts auxiliary fixtures spacing simultaneously for production is complicated, consuming time, and production efficiency is low, with high costs, and backlight unit 100 in this application can promote production efficiency, reduction in production cost under the firm prerequisite of guaranteeing outline 2 installation.

It is understood that the fixing manner between the back plate 11 and the first adapting frame 12 is not limited in particular, for example, the back plate 11 and the first adapting frame 12 may or may not be detachably connected (for example, the back plate 11 and the first adapting frame 12 may be formed as a single piece); when the back plate 11 and the first adapting frame 12 are separately formed and connected by assembling, the structure of the back plate 11 can be simplified, and meanwhile, the first adapting frame 12 can effectively support the back plate 11 and the outer frame 2, so that the structural strength of the backlight module 100 is ensured.

According to the backlight module 100 provided by the embodiment of the present invention, by providing the first adapting frame 12 and fixedly connecting the outer frame 2 with the first adapting frame 12, the outer frame 2 is fixedly connected with the back plate 11 through the first adapting frame 12, so that the outer frame 2 is ensured to be firmly installed, and the first adapting frame 12 can support the back plate 11, thereby improving the structural stability of the backlight module 100; meanwhile, in the assembling process of the backlight module 100, the number of times of turning over the outer frame 2 and the backlight assembly 1 can be reduced, the number of times of using auxiliary tools can be reduced, the processing tool of the backlight module 100 is effectively simplified, the production efficiency is improved, and the production cost is reduced.

In some embodiments of the present invention, the outer frame 2 includes a first face frame 21 located above the back plate 11 and a first side frame 22 located at a side portion of the first face frame 21 and enclosing the back plate 11, the first adapting frame 12 includes a second face frame 121 and a second side frame 122 located at a side portion of the second face frame 121, the first side frame 22 includes a first extending portion 221 extending toward the back plate 11 and wrapping outside the second side frame 122, and the first extending portion 221 and the second side frame 122 are connected. For example, as shown in fig. 4 and 8-10, the first side frame 22 may be located outside the first bezel 21, the first side frame 22 is connected to the first bezel 21, the second side frame 122 may be located outside the second bezel 121, the second side frame 122 is connected to the second bezel 121, the first and second side frames 21 and 121 may be disposed opposite to each other along a thickness direction (e.g., an up-down direction in fig. 2 and 3) of the backlight module 100, the first extending portion 221 may extend toward the back plate 11 along the thickness direction of the backlight module 100 to wrap the outside of the second side frame 122, and the first extending portion 221 and the second side frame 122 are fixedly connected to lock the outer bezel 2 and the first transfer bezel 12. Therefore, the outer frame 2 and the first transfer frame 12 have simple structures, and the outer frame 2 and the first transfer frame 2 are convenient to be quickly locked, and the outer frame 2 can be used as a frame of the backlight module 100; when the backlight module 100 is applied to the display device 200, the outer frame 2 can also be used as a product outer frame, so that structural components of the display device 200 are effectively saved, the structure is simplified, and the part cost and the production cost of the product are reduced.

Further, as shown in fig. 4 and fig. 8 to 10, the backlight module 100 further includes a first side locking member 3, and the first extending portion 221 and the second side frame 122 are locked and connected by the first side locking member 3, so as to ensure that the outer frame 2 and the first adapting frame 2 are firmly connected.

For example, in the examples of fig. 4 and fig. 8 to fig. 10, the first side locking pieces 3 may sequentially penetrate through the outer frame 2 and the first transfer frame 12 from the radial outer side of the backlight module 100 to the inside to lock the outer frame 2 and the first transfer frame 12, so as to facilitate the installation of the first side locking pieces 3; moreover, in the assembling process of the backlight module 100, the second side of the backlight module 1 can be placed upwards, the outer frame 2 can be arranged at the second side of the backlight module 1, the outer frame 2 and the backlight module 1 do not need to be turned over at the moment, the auxiliary tool needing the limiting outer frame 2 and the backlight module 1 in the turning process is not needed, the outer frame 2 and the first adapting frame 12 can be directly locked and fixed from the radial outer side of the backlight module 100 by the first side locking piece 3, the production and processing procedures of the backlight module 100 are simplified, the manufacturing process is simple, the production efficiency of products is conveniently and effectively improved, and the reduction of the production cost is facilitated.

It should be noted that in the description of the present application, "radial direction" may be understood as a direction perpendicular to the central axis 100a of the backlight module 100, and "radially outer side" may refer to a direction away from the central axis 100a of the backlight module 100, and the opposite direction is defined as "radially inner side" (or simply "inner side").

Alternatively, in the example of fig. 4, 8-10, the first side locking member 3 is a side locking screw 30, a first through hole 221a is formed on the first extension part 221, a first threaded connection hole 122a is formed on the second side frame 122, the side locking screw 30 is inserted through the first through hole, and the side locking screw 30 is threadedly engaged with the first threaded connection hole. For example, the side locking screw 30 penetrates through the first extending portion 221 along a direction perpendicular to the thickness direction of the backlight module 100 and the side locking screw 30 is screwed to the second side frame 122, so that the first side locking member 3 has a simple structure and a low cost, and is convenient for further ensuring that the outer frame 2 and the first adapting frame 12 are firmly connected. Wherein the first screw coupling hole 122a may be formed as a through hole or a blind hole.

It is understood that the first side locking member 3 may be other locking members, not limited to the side locking screw 30; the first side locking member 3 may also lock the outer frame 2 and the first transfer frame 12 in other directions, for example, in a direction forming an acute angle with the thickness direction of the backlight module 100.

In some embodiments of the present invention, the second side frame 122 extends from the outer edge of the second face frame 121 to the outer frame 2 direction, so that a bearing groove 120 having a receiving space is defined between the second side frame 122 and the second face frame 121, the back plate 11 has an edge portion 113 and a flanging portion 110 which is arranged at the edge of the edge portion 113 and extends toward the first face frame 21, and both the edge portion 113 and the flanging portion 110 are installed in the bearing groove 120. For example, as shown in fig. 4-10, the second side frame 122 extends from the outer edge of the second face frame 121 to the front side (e.g., the upper side in fig. 3 and 4) of the backlight module 100, so that the second side frame 122 and the second face frame 121 may substantially form an L-shaped structure, and a carrying groove 120 with both the front side and the inner side open is defined between the second side frame 122 and the second face frame 121, the edge of the back plate 11 may include an edge portion 113 and a flange portion 110, and the edge of the back plate 11 is mounted in the carrying groove 120, so that the second face frame 121 may be located at the back side (e.g., the lower side in fig. 3 and 4) of the back plate 11, the second side frame 122 may be located at the outer side of the back plate 11, and when the outer frame 2 is fixedly connected to the back plate 11 through the first relay frame 12, the first relay frame 12 may play a certain role in supporting and protecting the edge of the back plate 11, effectively ensuring the structural strength of the, the backlight module 100 is prevented from being easily damaged when falling.

It should be noted that, in the description of the present application, the direction "front side" may be understood as a side of the user near the user along the thickness direction of the backlight module 100 (for example, the up-down direction in fig. 1 and 3, or the extending direction of the central axis 100a of the backlight module 100) when the backlight module 100 is used, and a direction opposite to the "front side" is defined as a "back side"; for example, in the examples of fig. 1 and 3, "the front side of the backlight assembly 1" may refer to the upper side of the backlight assembly 1, and "the back side of the backlight assembly 1" may refer to the lower side of the backlight assembly 1.

Further, as shown in fig. 10, the backlight module 100 further includes a first back locking element 4, and the second frame 121 and the edge portion 113 are locked and connected by the first back locking element 4, so as to facilitate the fixed connection between the first transfer frame 12 and the back plate 11. The first back locking member 4 can lock the edges of the second panel 121 and the back panel 11 from the back of the backlight module 100, and the first back locking member 4 can penetrate through the second panel 121 and the edge 110 from the back side (e.g., the lower side in fig. 10) of the backlight module 100 toward the front side (e.g., the upper side in fig. 10) of the backlight module 100 to lock the first transfer frame 12 and the back panel 11, so as to ensure the connection between the first transfer frame 12 and the back panel 11, and when the backlight module 100 is applied to the display device 200, the first back locking member 4 is not exposed in the visual field of the user during the use of the user, so that the appearance of the display device 200 is improved, and meanwhile, the interference between the first back locking member 4 and the display screen 101 is avoided, so that the display device 200 has a larger display area and a good display effect.

Alternatively, in the example of fig. 10, the first back locking member 4 is a first back locking screw 40, a second through hole 121a is formed on the second face frame 121, a second threaded connection hole 113a is formed on the edge 113, the first back locking screw 40 is inserted through the second through hole 121a, and the first back locking screw 40 is threadedly fitted to the second threaded connection hole 113 a. For example, the first back locking screw 40 penetrates the second panel 121 along the thickness direction of the backlight module 100 and the second back locking screw 50 is screwed to the edge of the back plate 11, so that the first back locking part 4 has a simple structure and low cost, and is convenient to further ensure that the first transfer frame 12 is firmly connected with the back plate 11.

It will be appreciated that the first back lock 4 may also be other locking members, not limited to back lock screws; the first back locking member 4 may also lock the first transfer frame 12 and the back plate 11 in other directions, for example, in a direction inclined with respect to the thickness direction of the backlight module 100.

In some embodiments of the present invention, as shown in fig. 4-10, the backlight assembly 1 further includes a reflective sheet 13 disposed on the front side of the back plate 11, a light guide plate 14 disposed on the front side of the reflective sheet 13, and a backlight film 15 disposed on the front side of the light guide plate 14, the edge of the reflective sheet 13, the edge of the light guide plate 14, and the edge of the backlight film 15 are also disposed in the carrying groove 120, and the edge of the reflective sheet 13, the edge of the light guide plate 14, and the edge of the backlight film 15 are all disposed on the front side of the back plate 11, the edge of the back plate 11 is formed with a flanging portion 110, the edge of the reflective sheet 13, the edge of the light guide plate 14, and the edge of the backlight film 15 are all disposed on the inner side of the flanging portion 110, so that the first transition frame 12 can also play a certain role in supporting and protecting the edge of the reflective sheet 13, the edge of the light guide plate 14, and the edge of the backlight film 15, the backlight module 100 is prevented from being easily damaged when falling.

For example, in the examples of fig. 4 to 10, the reflective plate 13 may be adhered to the front side surface of the back plate 11, the light guide plate 14 and the backlight film 15 may both be formed as a flat plate structure, the light guide plate 14 and the backlight film 15 may be sequentially stacked on the front side of the reflective plate 13, the light guide plate 14 may guide the light of the light source 16 of the backlight assembly 1 to enhance the brightness, and the backlight film 15 may enhance the light, so the backlight module 100 has good applicability, which is convenient for enhancing the experience effect of the user. In order to ensure the bonding strength between the reflective plate 13 and the back plate 11, the structural shape of the reflective plate 13 may be matched with the structural shape of the back plate 11, but is not limited thereto. The backlight film 15 may include a diffusion sheet and/or an antireflection film.

In the examples of fig. 4 to 10, the first face frame 21 includes a first limiting portion 211 extending away from the first side frame 22 and extending above the back plate 11, the back plate 11 is provided with the backlight film material 15, and an edge of the backlight film material 15 is clamped between the first limiting portion 211 and the back plate 11, so that the back plate 11 and the first limiting portion 211 can limit the backlight film material 15, and rapid installation of the backlight film material 15 is facilitated. For example, the first position-limiting portion 211 may extend to the edge front side (e.g., the upper side in fig. 4) of the backlight film material 15, the first position-limiting portion 211 may be located at the inner side of the first face frame 21, and the first position-limiting portion 211 may extend inward from the inner edge of the first face frame 21, and the first position-limiting portion 211 may limit the movement of the backlight film material 15 in the thickness direction (e.g., the up-down direction in fig. 4) of the backlight module 100, so as to facilitate the position limitation of the backlight film material 15, ensure the effective fixation of the film material inside the backlight module 100, and have no need to additionally provide other position-limiting structures, and the structure is simple.

In some embodiments of the present invention, as shown in fig. 6-9, 13 and 15, the edge portion 113 is formed with a protrusion 111 for positioning, the protrusion 111 is fixedly connected to the back plate 11, and the protrusion 111 is spaced from the flanging portion 110, for example, the protrusion 111 may be located inside the flanging portion 110, the back plate 11 is provided with a backlight film 15, the backlight film 15 may be disposed on one side of the light guide plate 14 away from the back plate 11, the light guide plate 14 may be disposed between the back plate 11 and the backlight film 15, the backlight film 15 is provided with a positioning hole 150 in positioning fit with the protrusion 111, so as to facilitate positioning of the backlight film 15, the light guide plate 14 is provided with a positioning groove 140 in positioning fit with the protrusion 111, and facilitate positioning of the light guide plate 14.

For example, the positioning protrusion 111 may be formed by extending a part of the front side surface of the back plate 11 toward the front side of the back plate 11, the positioning through hole 150 may penetrate through the backlight film 15 along the thickness direction of the backlight module 100, and an operator may view the position of the positioning through hole 150, so that the positioning protrusion 111 is quickly fitted to the positioning through hole 150 to position the backlight film 15. The positioning groove 140 may be formed by inwardly recessing the outer side surface of the light guide plate 14 for easy processing; of course, the positioning groove 140 may not be formed on the outer surface of the light guide plate 14 that is in positioning fit with the protrusion 111, and at this time, the outer surface of the light guide plate 14 may be directly positioned and stopped against the protrusion 111, and the positioning of the light guide plate 14 may also be achieved.

Alternatively, in the example of fig. 3, 6 and 7, the positioning protrusions 111 may be formed by extending the edge of the punched hole on the back plate 11 toward the front side of the back plate 11, the positioning protrusions 111 may be plural, and the positioning protrusions 111 may be arranged at intervals along the extending direction of the edge of the back plate 11; but is not limited thereto. In the description of the present invention, "a plurality" means two or more.

Further, as shown in fig. 3 and 11, the backlight assembly 1 further includes a second adapting frame 17, the back plate 11 includes four flanging portions 110 surrounding the edge portion 113, the second adapting frame 17 is disposed corresponding to one of the flanging portions 110, the first adapting frame 12 is disposed corresponding to the other three flanging portions 110, the second adapting frame 17 and the outer frame 2 are located on the same side of the back plate 11, the second adapting frame 17 includes a first connecting portion 172, a second connecting portion 173 and a second limiting portion 171, the first connecting portion 172 and the second connecting portion 173 are both located on the inner side of the corresponding flanging portion 110, the second limiting portion 171 extends to the upper side of the backlight film 15, and the second connecting portion 173 is located on the outer side of the corresponding flanging portion 110. For example, the edge of the back plate 11 includes four sub-edges 112 sequentially connected end to form a quadrilateral, each sub-edge 112 may include a flanging portion 110, the second adapting frame 17 is disposed at one of the sub-edges 112, the second adapting frame 17 is located at the front side of the back plate 11, the second adapting frame 17 is fixedly connected to the back plate 11, the first adapting frame 12 is disposed at the other three sub-edges 112, the first adapting frame 12 may be located at the back side of the back plate 11, the second adapting frame 17 includes a second limiting portion 171 extending to the front side of the edge of the backlight film material 15, the second limiting portion 171 may be located at the inner side of the second adapting frame 17, and the second limiting portion 171 may limit the movement of the backlight film material 15 in the thickness direction of the backlight module 100, thereby facilitating the pre-limiting of the backlight film material 15, without additionally providing other pre-limiting structures, facilitating the subsequent assembly of the backlight module 100, the backlight module 100 has a simple structure; when the backlight module 100 is applied to the display device 200, the second adapting frame 17 is convenient for meeting the routing requirement of the circuit connection lines of the display device 200, and the second adapting frame 17 is prevented from interfering with the arrangement of the circuit connection lines, that is, the circuit connection lines can extend from the inner side of the backlight module 100 to the outer side of the backlight module 100 from the sub-edge 112 where the second adapting frame 17 is disposed, wherein the arrangement of the circuit connection lines is well known by those skilled in the art and is not described herein again.

As shown in fig. 3 and 11, the backlight assembly 1 may further include a second side latch 18, and the first side frame 22 includes a third extension 223 extending toward the back plate 11 and wrapping outside the second connection 173, which may be understood as: the first side frame 22 of the outer frame 2 corresponding to the second adapting frame 17 includes a third extending portion 223, the first side frame 22 of the outer frame 2 corresponding to the first adapting frame 12 includes a first extending portion 221, a third through hole 223a is formed on the third extending portion 223, a third threaded connection hole 173a is formed on the second connection portion 173, the second side locking member 18 is inserted into the third through hole 223a, and the second side locking member 28 is in threaded fit with the third threaded connection hole 173 a.

For example, the second side locking element 18 may penetrate through the outer frame 2 and the second adapting frame 17 from the outer side of the backlight module 100 to lock the outer frame 2 and the second adapting frame 17, so as to further ensure the firm connection between the outer frame 2 and the backlight assembly 1; moreover, in the assembly process of the backlight module 100, the front side of the backlight module 1 can be placed upwards, the second switching frame 17 can be fixedly arranged on the back plate 11, the outer frame 2 is arranged on the front side of the backlight module 1, the outer frame 2 and the backlight module 1 do not need to be turned over at the moment, an auxiliary tool which needs to limit the outer frame 2 and the backlight module 1 in the turning process is not needed, the second side locking piece 18 can be directly adopted to lock the outer frame 2 and the second switching frame 17 from the side face of the backlight module 100, the production and processing procedures of the backlight module 100 are simplified, the manufacturing process is simple, the production efficiency of products is conveniently and effectively improved, and the reduction of the production cost is facilitated.

Further, as shown in fig. 3 and 11, the backlight assembly 1 further includes a locking member 19, the locking member 19 locks the first connecting portion 172 and the back plate 11 from above the second adapting frame 17, so that the locking member 19 can penetrate through the second adapting frame 17 and the back plate 11 from the front side of the backlight module 100 toward the back side of the backlight module 100 to lock the second adapting frame 17 and the back plate 11, and secure connection between the second adapting frame 17 and the back plate 11 is ensured, and since the backlight film material 15 is disposed on the front side of the back plate 11 and the second limiting portion 171 of the second adapting frame 17 extends to the front side of the edge of the backlight film material 15, the locking member 19 can be used to lock the second adapting frame 17 and the back plate 11 after the backlight film material 15 is mounted, and the back plate 11 does not need to be turned over in the above process, which is convenient to assemble.

Alternatively, in the example of fig. 11, the locking member 19 is a locking screw 190, the first connecting portion 172 is formed with a fourth through hole 172a, the back plate 11 is formed with a fourth threaded connecting hole 11a, the locking screw 190 is inserted through the fourth through hole 172a, and the locking screw 190 is threadedly fitted to the fourth threaded connecting hole 11 a. For example, the locking screw 190 penetrates through the second adapting frame 17 along the thickness direction of the backlight module 100 and the locking screw 190 is screwed to the back plate 11, so that the locking member 19 has a simple structure and low cost, and is convenient to further ensure that the second adapting frame 17 and the back plate 11 are reliably connected.

It will be appreciated that the positive lock 19 may also be other locking members, not limited to the positive lock screw 190; the positive locking piece 19 can also lock the second adapting frame 17 and the back plate 11 in other directions, for example, in a direction inclined with respect to the thickness direction of the backlight module 100.

In some embodiments of the present invention, as shown in fig. 16, the backlight module 100 further includes a second back locking member 5, and the second side frame 122 and the first front frame 21 are locked and connected by the second back locking member 5, so as to improve the connection reliability of the first adapting frame 12 and the outer frame 2. For example, the second back locking member 5 may penetrate through the second side frame 122 and the first face frame 21 from the back side of the backlight module 100 toward the front side of the backlight module 100 to lock the first transfer frame 12 and the outer frame 2, so as to improve the connection reliability of the first transfer frame 12 and the outer frame 2, and ensure the structural stability and the use reliability of the backlight module 100.

Alternatively, in the example of fig. 16, the second back locking member 5 is a second back locking screw 50, a fifth through hole 122b is formed on the second side frame 122, a fifth threaded connection hole 21a is formed on the first face frame 21, the second back locking screw 50 is inserted through the fifth through hole 122b, and the second back locking screw 50 is threadedly fitted into the fifth threaded connection hole 21 a. For example, the second back locking screw 50 penetrates the second side frame 122 along the thickness direction of the backlight module 100 and the second back locking screw 50 is screwed to the first face frame 21, so that the second back locking member 5 has a simple structure and low cost, and is convenient to further ensure that the first adapting frame 12 and the outer frame 2 are reliably connected.

It will be appreciated that the second back lock 5 may also be other locking members, not limited to back lock screws; the second back locking member 5 may also lock the first transfer frame 12 and the outer frame 2 in other directions, for example, in a direction inclined with respect to the thickness direction of the backlight module 100.

As shown in fig. 3, the outer frame 2 may include a first outer frame 20a and a second outer frame 20b, the first outer frame 20a is disposed corresponding to the first adapting frame 12, the second outer frame 20b is disposed corresponding to the second adapting frame 17, two adjacent first outer frames 20a are connected to each other in a splicing manner, and two adjacent first outer frames 20a and two adjacent second outer frames 20b are connected to each other in a splicing manner, so as to simplify the structures of the first outer frames 20a and the second outer frames 20b, and the outer frames 2 may be formed as a whole, and the outer frames 2 may be integrally assembled to the backlight assembly 1, thereby improving the assembly efficiency of the backlight assembly 100.

According to the display device 200 of the second aspect of the present invention, including the display screen 101 and the backlight module 100 of the first aspect of the present invention, the outer frame 2 includes the first frame 21 located above the back plate 11 and the first side frame 22 located at the side of the first frame 21 and surrounding the back plate 11; the display screen 101 is installed on the first face frame 21 of the outer frame 2, for example, the display screen 101 can be glued to the first face frame 21, so that the display screen 101 is ensured to be installed reliably, and the display screen has good product attractiveness. The display screen 101 may be a touch display screen, but is not limited thereto; for example, the display screen 101 may be a capacitive touch screen.

According to the utility model discloses a display device 200, through adopting foretell backlight unit 100, the assembly is reliable, is convenient for promote machining efficiency.

In some embodiments of the present invention, the outer frame 2 further includes a second extending portion 222 extending toward the direction of the display screen 101, and the display screen 101 is accommodated in the accommodating space 20 defined by the first face frame 21 and the second extending portion 22, so as to realize the positioning and installation of the display screen 100. For example, accommodation space 20 can form into the constant head tank, and accommodation space 20's upside can open the setting, and the border location fit of display screen 101 is in accommodation space 20, then display screen 101 and outline 2 direct location fit, is convenient for guarantee display screen 101 and outline 2's positioning accuracy, promotes the appearance quality of product.

For example, as shown in fig. 4 to 16, the outer frame 2 may include a first bezel 21 and a first side bezel 22 located outside the first bezel 21, the first side bezel 22 includes a second extending portion 222 extending toward the front side of the backlight module 100, a receiving space 20 with an open front side is defined between the first bezel 21 and the second extending portion 222, the display screen 101 is positioned and matched with the receiving space 20, and an edge of the display screen 101 may be positioned and matched with an inner side wall of the second extending portion 222.

Wherein, accommodation space 20 just inclines openly, can understand that accommodation space 20 just inclines openly completely, and then the free end of second extension 222 does not have the spacing turn-ups of inside extension, is convenient for realize display device 200's super narrow frame design, promotes the outward appearance of product to promote user experience.

It can be understood that, when the display screen 101 is glued to the outer frame 2, the back glue can be pasted on the front surface of the first face frame 21, so as to attach the display screen 101 to the accommodating space 20, thereby facilitating the assembly of the display screen 101.

The method of assembling the display device 200 may include the steps of: the backlight assembly 1 and the display screen assembly 102 are separately assembled; arranging the assembled display screen assembly 102 on the light-emitting side of the assembled backlight assembly 1; the outer frame 2 and the first transfer frame 12 are locked from the radial outside of the backlight module 100 by using the first side locking member 3. Wherein the step of assembling the backlight assembly 1 includes: adopt first back latch fitting 4 from the first side lock solid first switching frame 12 of backplate 11 and backplate 11, install reflector plate 13, light guide plate 14 and backlight membrane material 15 on the second side of backplate 11 in proper order, first side and second side set up relatively. From this, be convenient for realize production whole journey need not auxiliary fixtures, the upset number of times is few, saves the operating procedure, has improved production efficiency, and the sudden strain of a muscle of product outward appearance is sewed up easy management and control of defect such as break difference, easy adjustment, be convenient for in time restore simultaneously, does not influence normal line body production processes, saves man-hour.

Other configurations and operations of the display device 200 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

The backlight module 100 and the display device 200 according to the embodiments of the present invention are described in detail with reference to fig. 1 to 16 in two specific embodiments. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

Example one

In this embodiment, as shown in fig. 1 to fig. 15, the display device 200 includes a display screen 101 and a backlight module 100, the backlight module 100 includes a backlight assembly 1 and an outer frame 2, the outer frame 2 is disposed at a front side of the backlight assembly 1, the outer frame 2 is fixedly connected to the backlight assembly 1, the display screen 101 is mounted on the outer frame 2, and the display screen 101 is adhered to the outer frame 2. The display screen 101 is a capacitive touch screen such as a full-lamination electric control type touch screen, the display screen 101 comprises touch glass 1011 and liquid crystal glass 1012, the liquid crystal glass 1012 is adhered to the back side of the touch glass 1011, and the touch glass 1011 is adhered to the outer frame 2; the plane of the display screen 101 may be perpendicular to the thickness direction of the backlight module 100.

The backlight module 100 further comprises a first side locking piece 3 and a first back locking piece 4, the backlight assembly 1 comprises a back plate 11, a first adapting frame 12, a second adapting frame 17, a second side locking piece 18 and a positive locking piece 19, the edge of the back plate 11 comprises four sub-edges 112 which are sequentially connected end to form a quadrangle, each sub-edge 112 extends along a straight line, the second adapting frame 17 is arranged at the sub-edge 112 at the front side, the second adapting frame 17 is positioned at the front side of the back plate 11, the second adapting frame 17 is fixedly connected with the back plate 11, the first adapting frame 12 is arranged at the sub-edges 112 at the rear side and the left side and the right side, the first adapting frame 12 is positioned at the back side of the back plate 11, and the first adapting frame 12 is fixedly connected with the back plate 11; the first side locking piece 3 penetrates through the outer frame 2 and the first adapting frame 12 from the outer side of the backlight module 100 to lock the outer frame 2 and the first adapting frame 12, the first back locking piece 4 locks the first adapting frame 12 and the back plate 11 from the back of the backlight module 100, the second side locking piece 18 locks the outer frame 2 and the second adapting frame 17 from the side of the backlight module 100, and the positive locking piece 19 locks the second adapting frame 17 and the back plate 11 from the front of the backlight module 100. The back plate 11 is a metal member.

The outer frame 2 includes a first outer frame 20a and a second outer frame 20b, the second outer frame 20b is disposed at the front sub-edge 112 to correspond to the second adapting frame 17, the first outer frame 20a is disposed at the rear and left and right sub-edges 112 to correspond to the first adapting frame 12, two adjacent first outer frames 20a are fixedly connected with each other by a first locking fastener, the first locking fastener locks the two adjacent first outer frames 20a from the front of the backlight module 100, the adjacent first outer frames 20a and the second outer frame 20b are fixedly connected with each other by a second locking fastener, the second locking fastener locks the adjacent first outer frame 20a and the second outer frame 20b from the front of the backlight module 100, the first side locking member 4 locks the first outer frame 20a and the first adapting frame 12 from the side of the backlight module 100, and the second side 18 locks the second outer frame 20b and the second adapting frame 17 from the side of the backlight module 100, and the edges of the display screen 101 are adhered to the first outer frame 20a and the second outer frame 20 b.

The first outer frame 20a includes a first face frame 21 and a first side frame 22 located outside the first face frame 21, the first side frame 22 is connected to the first face frame 21, the first transfer frame 12 includes a second face frame 121 and a second side frame 122 located outside the second face frame 121, the second side frame 122 is connected to the second face frame 121, the second side frame 122 extends from an outer edge of the second face frame 121 to a front side of the backlight module 100, so that a carrying groove 120 with an open front side and an open inner side is defined between the second side frame 122 and the second face frame 121, an edge of the back plate 11 is mounted to the carrying groove 120, the first bezel 21 and the second bezel 121 are disposed opposite to each other along a thickness direction (e.g., a vertical direction in fig. 2 and 3) of the backlight module 100, the edge of the back plate 11 is located between the second bezel 121 and the first bezel 21, and the first back locking member 4 sequentially penetrates through the edges of the second bezel 121 and the back plate 11 to lock the first transfer bezel 12 and the back plate 11. The first side frame 22 includes a first extending portion 221 wrapped on the outer side of the second side frame 122, the first extending portion 221 extends toward the back side of the backlight module 100, and the first side locking member 3 sequentially penetrates through the first extending portion 221 and the second side frame 122 to lock the first extending portion 221 and the second side frame 122.

The second outer frame 20b includes a first face frame 21 and a first side frame 22 located outside the first face frame 21, the first side frame 22 is connected to the first face frame 21, the second adaptor frame 17 includes a first connection portion 172 located inside the flange portion 110 and a second connection portion 173 extending to the outside of the flange portion 110, the first connection portion 172 is substantially U-shaped in cross section, the first connection portion 172 is connected to the second connection portion 173, the second connection portion 173 is wrapped outside the flange portion 110, so that the flange portion 110 is fitted to the first connection portion 172 and the second connection portion 173, the first connection portion 172 and the second connection portion 173 are opposite to the first face frame 21 along a thickness direction (e.g., up and down direction in fig. 2 and 3) of the backlight module 100, and the positive locking member 19 is sequentially inserted through edges of the first connection portion 172 and the back plate 11 to lock the second adaptor frame 17 and the back plate 11. The first side frame 22 includes a third extending portion 223 wrapped on the outer side of the second connecting portion 173, the third extending portion 223 extends toward the back side of the backlight module 100, and the second side lock 18 sequentially penetrates through the third extending portion 223 and the second connecting portion 173 to lock the third extending portion 223 and the second connecting portion 173.

The first side frame 22 of the first outer frame 20a and the first side frame 22 of the second outer frame 20b each include a second extending portion 222 extending toward the front side of the backlight module 100, a receiving space 20 with an open front side is defined between the second extending portion 222 and the first bezel 21, and the edge of the display screen 101 is positioned and matched with the receiving space 20.

As shown in fig. 6-9, the backlight assembly 1 further includes a reflective plate 13, a light guide plate 14, a backlight film 15 and a light source 16, the reflective plate 12, the light guide plate 14, the backlight film 15 and the light source 16 are all located on the front side of the back plate 11, the light guide plate 14 is located on the front side of the reflective plate 13, the backlight film 15 is located on the front side of the light guide plate 14, a positioning protrusion 111 is formed on the front side of the edge of the back plate 11, a positioning through hole 150 is formed in the backlight film 15, and the positioning through hole 150 is in positioning fit with the positioning protrusion 111; the edge of the back plate 11 is formed with a flanging portion 110, the flanging portion 110 extends from the edge of the back plate 11 toward the front side of the backlight module 100, the edges of the reflective plate 13, the light guide plate 14 and the backlight film material 15 are all located inside the flanging portion 110, and the edges of the reflective plate 13, the light guide plate 14 and the backlight film material 15 are all located inside the carrying groove 120. The backlight film 15 may include a four-layer film structure, for example, the backlight film 15 may include a diffusion sheet, a prism sheet, and a brightness enhancement sheet.

As shown in fig. 4, 5, 10 and 11, the first frame 21 includes a first position-limiting portion 211 extending to the positive side of the edge of the backlight film 15, the first position-limiting portion 211 is located at the inner side of the first frame 21, the first position-limiting portion 211 can extend inward from the inner edge of the first frame 21, and the first position-limiting portion 211 can limit the movement of the backlight film 15 in the thickness direction of the backlight module 100; the second adapting frame 17 includes a second position-limiting portion 171 extending to the positive side of the edge of the backlight film material 15, the second position-limiting portion 171 is located inside the first connecting portion 172, the second position-limiting portion 171 extends inward from the inner edge of the first connecting portion 172, and the second position-limiting portion 171 can limit the movement of the backlight film material 15 in the thickness direction of the backlight module 100. As shown in fig. 4 and 5, the lower surface of the first frame 21 may have a supporting portion extending toward the back side of the backlight module 100 along the thickness direction of the backlight module 100, and the lower end of the supporting portion may abut against the back plate 11, so as to ensure the stability of the outer frame 2 placed on the backlight assembly 1, and meanwhile, the structural stability of the outer frame 2 is improved, and the structural stability of the display device 100 is ensured.

According to the utility model discloses display device 200, outer frame 2 not only can regard as the product frame, can also regard as backlight unit 100's frame for display device 200 is being applied to when multiple occasion, can regard as the preceding shell of complete machine outward appearance, and simple structure, the realization of being convenient for can realize the design of super narrow frame, and have good assembly reliability.

Example two

As shown in fig. 16, the present embodiment has substantially the same structure as the first embodiment, wherein the same reference numerals are used for the same components, except that: the backlight module 100 further includes a second back locking member 5, wherein the second back locking member 5 locks the second side frame 122 and the first front frame 21 from the back of the backlight module 100.

In the description of the present invention, it is to be understood that the terms "center", "length", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A backlight module, comprising:

the backlight assembly comprises a back plate and a first switching frame, the back plate is fixedly connected with the first switching frame, a light guide plate is arranged on the back plate, and the light guide plate and the first switching frame are respectively positioned at two opposite sides of the back plate;

the outer frame and the light guide plate are arranged on the same side of the back plate, and the outer frame is fixedly connected with the first switching frame so that the outer frame is fixedly connected with the back plate through the first switching frame.

2. The backlight module as claimed in claim 1, wherein the outer frame comprises a first frame disposed above the back plate and a first side frame disposed at a side of the first frame and surrounding the back plate;

the first junction frame comprises a second face frame and a second side frame located on the side portion of the second face frame, the first side frame comprises a first extending portion extending towards the back plate and wrapping the outer side of the second side frame, and the first extending portion is connected with the second side frame.

3. The backlight module of claim 2, further comprising:

the first extension part and the second side frame are connected through the first side locking part in a locking mode.

4. The backlight module as claimed in claim 3, wherein the first side locking member is a side locking screw, the first extending portion has a first through hole formed thereon, the second side frame has a first threaded connection hole formed thereon, and the side locking screw is inserted into the first through hole and threadedly engaged with the first threaded connection hole.

5. The backlight module according to claim 2, wherein the second side frame extends from an outer edge of the second bezel to the outer bezel such that a carrying groove having a receiving space is defined between the second side frame and the second bezel, the back plate has a rim portion and a flange portion disposed at an edge of the rim portion and extending toward the first bezel, and the rim portion and the flange portion are both mounted in the carrying groove.

6. The backlight module of claim 5, further comprising:

first back of the body latch fitting, the second face frame with the border portion passes through first back of the body latch fitting locking connection, first back of the body latch fitting is first back of the body latch fitting screw, be formed with the second through-hole on the second face frame, be formed with second threaded connection hole in the border portion, first back of the body latch fitting screw is worn to locate second through-hole and screw-thread fit in second threaded connection hole.

7. The backlight module according to claim 5, wherein the first bezel comprises a first position-limiting portion extending away from the first side frame and extending above the back plate;

the back plate is provided with a backlight film material, and the edge of the backlight film material is clamped between the first limiting part and the back plate.

8. The backlight module according to claim 5, wherein the edge portion has a protrusion for positioning, the protrusion is fixedly connected to the back plate and spaced from the flange portion, the back plate has a backlight film, the backlight film has a positioning hole for positioning the protrusion, and the light guide plate has a positioning groove for positioning the protrusion.

9. The backlight module according to claim 5, wherein the backlight assembly further comprises:

the back plate comprises four flanging parts surrounding the edge parts, the second switching frame is arranged corresponding to one flanging part, the first switching frame is arranged corresponding to the other three flanging parts, the second switching frame and the outer frame are positioned on the same side of the back plate, the second switching frame comprises a first connecting part, a second connecting part and a second limiting part, the first connecting part and the second limiting part are positioned on the inner sides corresponding to the flanging parts, the second limiting part extends to the upper side of a backlight film material of the backlight module, and the second connecting part is positioned on the outer sides corresponding to the flanging parts;

second side latch fitting, first side frame includes the orientation the backplate extends and wraps up the third extension in the second connecting portion outside, be formed with the third through-hole on the third extension, be formed with third threaded connection hole on the second connecting portion, second side latch fitting is worn to locate third through-hole and screw-thread fit in third threaded connection hole.

10. A backlight module according to claim 9, wherein the backlight assembly further comprises:

a positive locking piece for locking the first connecting part and the back plate from the upper part of the second switching frame,

the positive locking piece is a positive locking screw, a fourth through hole is formed in the first connecting portion, a fourth threaded connecting hole is formed in the back plate, and the positive locking screw penetrates through the fourth through hole and is in threaded fit with the fourth threaded connecting hole.

11. A backlight module according to any of claims 2-10, further comprising:

the second back locking piece, the second side frame with first frame passes through second back locking piece locking connection.

12. The backlight module as claimed in claim 11, wherein the second locking member is a second locking screw, a fifth through hole is formed on the second side frame, a fifth screw-coupling hole is formed on the first side frame, and the second locking screw is inserted into the fifth through hole and screw-coupled to the fifth screw-coupling hole.

13. A display device, comprising: the display screen and the backlight module according to any one of claims 1 to 12, wherein the outer frame comprises a first face frame positioned above the back plate and a first side frame positioned at the side part of the first face frame and used for surrounding the back plate; the display screen is arranged on the first face frame of the outer frame.

14. The display device according to claim 13, wherein the outer frame further comprises a second extension portion extending toward the display screen, and the display screen is accommodated in an accommodating space defined by the first frame and the second extension portion.

Images