CN113900302A

CN113900302A - Backlight module and display device

Info

Publication number: CN113900302A
Application number: CN202111165349.7A
Authority: CN
Inventors: 寸敏敏; 曾东龙
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-01-07
Anticipated expiration: 2041-09-30
Also published as: CN117369183A; CN113900302B

Abstract

The invention discloses a backlight module and a display device, belonging to the technical field of display, wherein the backlight module comprises a shell, a light source and a plurality of optical diaphragms, the shell comprises a back plate and side plates which are connected, the side plates at least comprise a first side plate, one side of the first side plate, which is far away from the back plate, comprises a step structure in the direction vertical to the light-emitting surface of the backlight module, and a first edge-covering plate is fixedly arranged on the step structure; in the direction perpendicular to the light emitting surface of the backlight module, one side of the first edge covering plate, which is far away from the back plate, further comprises a plurality of first buckles, one side of the first side plate, which is far away from the back plate, is provided with a plurality of first clamping grooves corresponding to the first buckles, and the first edge covering plate is embedded in the first clamping grooves through the first buckles and is fixed with the first side plate. The display device comprises a display panel and the backlight module which are oppositely arranged. The invention can realize a narrow frame, and simultaneously can improve the firmness of the whole backlight module, avoid the optical film from being crushed and ensure the display effect.

Description

Backlight module and display device

Technical Field

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

Background

Liquid Crystal Display (LCD) devices have many advantages such as thin body, power saving, and no radiation, and are widely used. Such as liquid crystal televisions, mobile phones, personal digital assistants, digital cameras, computer screens or notebook computer screens, etc., are dominant in the field of flat panel displays. The liquid crystal display device is a display component adopted by most of current mobile phone products, and the traditional liquid crystal display device is composed of a liquid crystal display screen, a backlight module, a driving circuit and other components. The liquid crystal display screen is a passive light-emitting component, and the backlight module is used for providing a uniform surface light source for the liquid crystal display screen. Along with the appearance of narrow frame mobile terminal, the mobile terminal who uses the LCD display screen presents the trend that the frame is narrower and narrower, and is corresponding, the frame of the backlight unit who provides the light source for the LCD display screen also need further do narrowly to satisfy mobile terminal's narrow frame demand.

The shell among the backlight unit among the prior art generally adopts well panel beating material, and the main effect of well panel beating is the glass substrate who bears among the display panel, and the intensity that bears for generally gluing the frame will be high a lot. Along with the development of cast aluminum module and jumbo size module, adopt the backlight of cast aluminum casing more and more, and often there is not sufficient width space to design the step of panel beating in supporting on cast aluminum casing, lead to cast aluminum module to be difficult to further develop to narrow frame, and often because of the pressure effect behind the glass substrate of equipment or laminating display panel for the optical diaphragm in the backlight module is harmed to the collapse under the panel beating, arouses diaphragm Waving phenomenon (indicate the diaphragm warpage, lead to the surface unevenness, thereby demonstrate the phenomenon of ripple state), finally very influence liquid crystal display device's picture effect very easily.

Therefore, how to provide a backlight module and a display device that can improve the load-bearing strength of the backlight housing and prevent the display failure while realizing a narrow frame is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention provides a backlight module and a display device, so as to solve the problem in the prior art that a glass substrate in an assembled display panel easily damages an optical film in the backlight module to cause poor display in order to realize a narrow bezel.

The invention discloses a backlight module, which comprises a shell, a light source and a plurality of optical diaphragms, wherein the shell forms a space for accommodating the light source and the plurality of optical diaphragms; the shell comprises a back plate and a side plate which are connected, the extending direction of the back plate is parallel to the light-emitting surface of the backlight module, and the extending direction of the side plate is intersected with the light-emitting surface of the backlight module; the side plates at least comprise a first side plate, one side of the first side plate, which is far away from the back plate, comprises a step structure in the direction perpendicular to the light-emitting surface of the backlight module, and a first edge-wrapping plate is fixedly arranged on the step structure; in the direction perpendicular to the light-emitting surface of the backlight module, one side of the first edge covering plate, which is far away from the back plate, further comprises a plurality of first buckles, the extending direction of the first buckles is parallel to the light-emitting surface of the backlight module, and the first buckles extend towards the direction close to the first side plate; one side of the first side plate, which is far away from the back plate, is provided with a plurality of first clamping grooves corresponding to the first buckles, and the first edge covering plate is embedded in the first clamping grooves through the first buckles and fixed with the first side plate.

Based on the same invention concept, the invention also discloses a display device, which comprises a display panel and the backlight module which are oppositely arranged, wherein the display panel is positioned on one side of the light-emitting surface of the backlight module; the display panel is arranged on the first wrapping plate.

Compared with the prior art, the backlight module and the display device provided by the invention at least realize the following beneficial effects:

the shell of the backlight module comprises a back plate and a side plate which are connected, wherein the extending direction of the back plate is parallel to the light-emitting surface of the backlight module, and the back plate is used as a bearing part of various structures of the backlight module, so that structures such as a light source, an optical diaphragm and the like can be placed on the back plate. The extending direction of the side plate is intersected with the light-emitting surface of the backlight module, the side plate is used for surrounding structures such as a light source and an optical diaphragm in the range of the back plate, and meanwhile the side plate can also be used as a bearing part of the display panel, and good supporting performance of the shell on the display panel is guaranteed. The curb plate includes first curb plate at least, in the direction that perpendicular to backlight unit goes out the plain noodles, one side that the backplate was kept away from to first curb plate includes the stair structure, the stair structure is used for fixed setting first bounding wall, bear display panel's weight jointly through this stair structure and first bounding wall, can be on the basis of guaranteeing the supporting effect of stair structure, it is narrower with backlight unit's frame design to go out the plain noodles ascending width of face in the direction through injecing the stair structure, and then be favorable to promoting the display device who uses this backlight unit further to narrow frame development. The first clamping buckle of the first edge covering plate is embedded in the first clamping groove of the first side plate, so that the first edge covering plate and the first side plate are fixed, the first clamping buckle is embedded in the first clamping groove, the bearing capacity and the strength of the first edge covering plate can be improved, and the phenomenon that the first edge covering plate collapses easily under the pressure generated by the weight of the display panel and the optical diaphragm is crushed after the display panel is assembled is prevented in the direction perpendicular to the light emergent surface of the backlight module, so that the firmness of the whole backlight module is improved, and the display effect is ensured.

Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic plan view of a backlight module according to an embodiment of the invention;

FIG. 2 is a schematic sectional view taken along line A-A' of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B' of FIG. 1;

fig. 4 is a schematic view of a partially enlarged structure of the first side plate of the assembled backlight module and display panel of the present embodiment;

FIG. 5 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 6 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;

FIG. 7 is an enlarged view of a structure in the area C of FIG. 1;

FIG. 8 is an enlarged view of another structure in the area C of FIG. 1;

FIG. 9 is an enlarged view of another structure in the area C of FIG. 1;

FIG. 10 is a schematic view of an alternative cross-sectional configuration taken along line A-A' of FIG. 1;

fig. 11 is a schematic plan view illustrating another structure of a backlight module according to an embodiment of the invention;

FIG. 12 is a schematic cross-sectional view taken along line D-D' of FIG. 11;

fig. 13 is a schematic view of a partially enlarged structure of the second side plate after the backlight module and the display panel are assembled together according to the present embodiment;

FIG. 14 is a schematic cross-sectional view of D-D' in FIG. 11 taken in an alternate direction;

FIG. 15 is a schematic cross-sectional view of D-D' in FIG. 11 taken in an alternate direction;

FIG. 16 is a schematic view of another planar structure of a backlight module according to an embodiment of the present invention;

FIG. 17 is a schematic sectional view along the direction F-F' in FIG. 16;

FIG. 18 is a schematic sectional view taken along line G-G' in FIG. 16;

FIG. 19 is an enlarged view of a structure in the area I of FIG. 16;

FIG. 20 is an enlarged view of an alternate construction of the area I of FIG. 16;

FIG. 21 is a schematic view of an alternative cross-sectional configuration in the direction F-F' of FIG. 16;

fig. 22 is a schematic plan view illustrating a display device according to an embodiment of the present invention;

FIG. 23 is a schematic cross-sectional view taken along line J-J' of FIG. 22;

FIG. 24 is a schematic view of another cross-sectional structure taken along the direction J-J' in FIG. 22.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 4 in combination, fig. 1 is a schematic plan structure view of a backlight module according to an embodiment of the present invention (it can be understood that, in order to clearly illustrate a structure of a housing in the backlight module according to the present embodiment, fig. 1 is filled with transparency), fig. 2 is a schematic sectional structure view along a direction a-a 'in fig. 1, fig. 3 is a schematic sectional structure view along a direction B-B' in fig. 1, fig. 4 is a schematic partial enlarged structural view of a position of a first side plate after the backlight module and a display panel are assembled, a backlight module 000 according to the present embodiment includes a housing 10, a light source 20 and a plurality of optical films 30 (not illustrated in fig. 1, and not filled in fig. 2 and 3), and the housing 10 forms a space for accommodating the light source 20 and the plurality of optical films 30;

the housing 10 includes a back plate 101 and a side plate 102 connected to each other, the extending direction of the back plate 101 is parallel to the light emitting surface E of the backlight module 000, and the extending direction of the side plate 102 intersects with the light emitting surface E of the backlight module 000;

the side plates 102 at least include a first side plate 102A, in a direction Z perpendicular to the light emitting surface E of the backlight module 000, one side of the first side plate 102A away from the back plate 101 includes a step structure 102A1, and the step structure 102A1 is fixedly provided with a first edge covering plate 40;

in a direction Z perpendicular to the light emitting surface E of the backlight module 000, one side of the first edge covering plate 40 away from the back plate 101 further includes a plurality of first fasteners 401, an extending direction of the first fasteners 401 is parallel to the light emitting surface E of the backlight module 000, and the first fasteners 401 extend toward a direction close to the first side plate 102A;

a plurality of first engaging grooves 102A2 corresponding to the first fasteners 401 are formed on a side of the first side plate 102A away from the back plate 101, and the first edge covering plate 40 is engaged with the first engaging grooves 102A2 through the first fasteners 401 and fixed to the first side plate 102A.

Specifically, the backlight module 000 provided in this embodiment includes a housing 10, a light source 20, and a plurality of optical films 30, wherein the housing 10 is used to form a space for accommodating the light source 20 and the plurality of optical films 30, optionally, the light source 20 may be a direct light source or a side light source, that is, the backlight module 000 provided in this embodiment may be a direct light backlight module, the plurality of optical films 30 may include a diffusion sheet, a reflection sheet, a brightness enhancement sheet, and the like, and the plurality of light sources 20 are arranged in an array, and form a surface light source through the cooperation of the optical films 30; the backlight module 000 may also be a side-in type backlight module, the plurality of optical films 30 may include a light guide plate 302, a diffusion sheet 303, a reflection sheet 301, a brightness enhancement sheet 304, and the like, and the plurality of light sources 20 are arranged along a long direction, such that the light emitting surface of the light source 20 faces the side surface of the light guide plate, and a surface light source is formed by the light guiding effect of the light guide plate. It is understood that the present embodiment only takes the backlight module 000 as an example of a side-in type backlight (as shown in fig. 1), and the present embodiment does not describe the specific arrangement structure of the light source 20 and the optical film 30 again, and in the specific implementation, the arrangement may be performed by referring to the direct type backlight and the side-in type backlight structure in the related art.

The housing 10 of the present embodiment includes a back plate 101 and a side plate 102 connected to each other, and optionally, the back plate 101 and the side plate 102 may be made of the same material and integrally formed in the same process to form the housing 10. The extending direction of the back plate 101 is parallel to the light emitting surface E of the backlight module 000, and the back plate 101 is used as a carrier of various structures of the backlight module 000, so that the light source 20, the optical film 30 and other structures can be placed on the back plate 101. Optionally, as shown in fig. 2 and fig. 3, in this embodiment, the extending direction of the side plate 102 is perpendicular to the light-emitting surface E of the backlight module 000, and the side plate 102 is used to enclose the light source 20, the optical film 30, and other structures in the range of the back plate 101, and at the same time, the side plate 102 can also be used as a carrier of the display panel, so as to ensure good supporting performance of the housing 10 on the display panel.

The side plates 102 of the present embodiment at least include a first side plate 102A, and optionally, as shown in fig. 1, when the back plate 101 is square, the number of the first side plates 102A may be 4, and the first side plates surround the square back plate 101 and are integrally formed with the back plate 101 to form the housing 10. Alternatively, the number of the first side plates 102A may be less than 4, for example, 3 (not shown in the drawings), that is, in this embodiment, the side plates 102 whose four sides surround the back plate 101 may not be all of the structure of the first side plate 102A, and may also be all of the structure of the first side plate 102A, which is not specifically limited in this embodiment, and in the specific implementation, the number of the first side plates 102A may be selected according to the actual design requirement of the housing 10. It should be noted that the back panel 101 of the present embodiment may have other shapes, and the side panels 102 only need to form an accommodating space around the back panel 101.

As shown in fig. 2 and 3, in a direction Z perpendicular to the light emitting surface E of the backlight module 000, one side of the first side plate 102A away from the back plate 101 includes a step structure 102A1, and the step structure 102A1 is used for fixedly disposing the first edge covering plate 40, optionally, the first edge covering plate 40 may be an L-shaped plate as shown in fig. 2 and 3, so that the shape of the first edge covering plate 40 may be matched with the shape of the step structure 102A1 of the first side plate 102A, and the first edge covering plate 40 may be stably placed on the step structure 102A 1.

As shown in fig. 2 and 4, an edge portion of the first edge covering board 40, which can be used for placing the display panel 001 in the L-shaped structure, that is, the step structure 102A1 of the first side board 102A is combined with the first edge covering board 40 to jointly bear the weight of the display panel 001, and the edge portion of the display panel 001 can be just matched with the shape of the first edge covering board 40 and can be stably placed on the first edge covering board 40 through a buffering fixing material such as a foam double-faced adhesive tape. In the direction Z perpendicular to the light emitting surface E of the backlight module 000, one side of the first edge covering plate 40 away from the back plate 101 further includes a plurality of first fasteners 401, optionally, the first fasteners 401 and the first edge covering plate 40 may be integrally formed of the same material, which is beneficial to improving the process efficiency; the extending direction of the first buckle 401 is parallel to the light emitting surface E of the backlight module 000, the first buckle 401 extends toward the direction close to the first side plate 102A, a plurality of first engaging grooves 102A2 corresponding to the first buckle 401 are disposed on the side of the first side plate 102A away from the back plate 101, the surface of the side of the first side plate 102A away from the back plate 101 is recessed toward the direction close to the back plate 101 to form a first engaging groove 102A2, and the first edge covering plate 40 is embedded in the first engaging groove 102A2 through the first buckle 401 to be fixed with the first side plate 102A.

It should be noted that fig. 1 of the present embodiment only illustrates the number of the first hooks 401 and the corresponding first card slots 102A2, but does not represent an actual number, in a specific implementation, the number of the first hooks 401 may be designed according to an actual size of the backlight module 000, and optionally, the plurality of first hooks 401 may be uniformly arranged around the back plate 101, that is, in the plurality of first hooks 401 around the back plate 101, a distance between any two adjacent first hooks 401 may be set to be equal, so as to be beneficial to balancing a fixing effect of the first edge covering plate 40 and the first side plate 102A.

In this embodiment, the first edge covering plate 40 is placed on the step structure 102A1 of the first side plate 102A of the housing 10, and the step structure 102A1 and the first edge covering plate 40 jointly bear the weight of the display panel 001, so that the width of the step structure 102A1 in the direction parallel to the light emitting surface E of the backlight module 000 is limited to design the edge frame of the backlight module 000 to be narrower on the basis of ensuring the supporting effect of the step structure 102A1, which is further beneficial to promote the development of the display device applying the backlight module 000 to a narrow edge frame, and the first clip 401 of the first edge covering plate 40 is further disposed to be inserted into the first clip groove 102A2 of the first side plate 102A, so as to fix the first edge covering plate 40 and the first side plate 102A, and the first clip 401 is inserted into the first clip groove 102A2, so that the bearing capacity and strength of the first edge covering plate 40 can be improved, and the light emitting surface Z perpendicular to the backlight module 000E, the phenomenon that the first edge covering plate 40 collapses easily and the optical film 30 is crushed under the pressure generated by the weight of the display panel 001 after the display panel 001 is assembled is prevented, so that the firmness of the whole backlight module 000 is improved, and the display effect is ensured.

It is understood that the backlight module 000 of the present embodiment includes, but is not limited to, the above structure, and may further include other structures, such as a light shielding adhesive, which can enable the backlight module 000 to provide backlight for the display panel 001.

Optionally, the manufacturing material of the housing 10 in this embodiment includes a cast aluminum material, the cast aluminum material may be formed by using an aluminum alloy, and the manufacturing material of the first edge covering plate 40 includes a metal plate, which is helpful for improving the flatness of the first edge covering plate 40. The manufacturing material of the casing 10 of the backlight module 000 of the embodiment includes a cast aluminum material, the cast aluminum material can be formed by an aluminum alloy, and the manufacturing material of the first edge covering plate 40 includes a metal plate, so that the high supporting strength is ensured, and meanwhile, the heat dissipation and the forming are both facilitated.

In some optional embodiments, please refer to fig. 1, fig. 4 and fig. 5 in combination, fig. 5 is a schematic cross-sectional view taken along a direction a-a' in fig. 1, in which the step structure 102A1 of the first side plate 102A includes a first mesa 102A11 and a second side wall 102A12, the first mesa 102A11 is parallel to the light-emitting surface E of the backlight module 000, and the second side wall 102A12 intersects the light-emitting surface E of the backlight module 000; optionally, in the embodiment, the second sidewall 102a12 is perpendicular to the light emitting surface E of the backlight module 000 for example;

the first edge covering plate 40 includes a first supporting plate 40A and a first fixing plate 40B, which are disposed in an intersecting manner, the first supporting plate 40A is parallel to the light emitting surface E of the backlight module 000, the first supporting plate 40A extends in a direction away from the first side plate 102A, and the first fixing plate 40B intersects the light emitting surface E of the backlight module 000; optionally, in the embodiment, the first fixing plate 40B is exemplified to be perpendicular to the light emitting surface E of the backlight module 000;

in a direction Z perpendicular to the light emitting surface E of the backlight module 000, the first fastener 401 is disposed on a side of the first fixing plate 40B away from the back plate 101;

the first fixing plate 40B is fixed to the second sidewall 102a12 by snap-fitting, and the first supporting plate 40A is fixed to the first table 102a11 by fitting.

The embodiment explains that the first edge covering plate 40 may be an L-shaped structure formed by the first supporting plate 40A and the first fixing plate 40B disposed in an intersecting manner, at this time, in the direction Z perpendicular to the light emitting surface E of the backlight module 000, the first buckle 401 is disposed on the side of the first fixing plate 40B away from the back plate 101, so that the first buckle 401 may be fixed to the first slot 102A2 of the first side plate 102A in an embedded manner on the side of the first fixing plate 40B away from the back plate 101, and the first supporting plate 40A may be disposed on the first table 102A11 of the stepped structure 102A1, so that the first fixing plate 40B is attached to the second side wall 102A12, thereby achieving a fixing effect that the first edge covering plate 40 can be just clamped on the stepped structure 102A1 of the first side plate 102.

Optionally, with continuing to refer to fig. 1, fig. 4 and fig. 5, in this embodiment, a first fixing plate 40B is further disposed to be fixed to the second side wall 102A12 in a snap-fit manner, a plurality of protrusions 40B1 are disposed on a side of the first fixing plate 40B facing the second side wall 102A12, a plurality of grooves 102A121 corresponding to the protrusions 40B1 are disposed on the second side wall 102A12, and the first fixing plate 40B is snap-fitted into the groove 102A121 through the protrusions 40B1 and fixed to the first side plate 102A, so that the first edge covering plate 40 is fixedly disposed on the step structure 102A1, and is also snap-fitted into the groove 102A121 through the protrusions 40B1, thereby further enhancing the fixing effect of the first edge covering plate 40 and the first side plate 102A, and further enhancing the supporting strength of the first edge covering plate 40 after the display panel 001 is assembled.

Optionally, please refer to fig. 1, fig. 4 and fig. 5 continuously, in this embodiment, a first supporting plate 40A is further disposed to be attached and fixed to the first platform 102a11, a double-sided adhesive AT1 and other thin and adhesive structures may be disposed between the first supporting plate 40A and the first platform 102a11 to implement fixed attachment, so as to ensure the smoothness and firmness of attachment and avoid increasing the thickness of the entire module.

Optionally, referring to fig. 1, fig. 4 and fig. 6 in combination, fig. 6 is another schematic cross-sectional structure view along direction a-a' in fig. 1, in which the first fixing plate 40B of the present embodiment is fixedly fastened to the second side wall 102A12, the first fixing plate 40B is provided with a plurality of protrusions 40B1 on one side facing the second side wall 102A12, the second side wall 102A12 is provided with a plurality of grooves 102A121 corresponding to the protrusions 40B1, the first fixing plate 40B is fixedly fastened to the first side plate 102A by being fastened in the grooves 102A121 via the protrusions 40B1, and the protrusions 40B1 can extend obliquely, that is, the angle α between the protrusion 40B1 and the first fastening plate 40B can be acute, so that the protrusion 40B1 can be inserted into the groove 102a121 with a matching shape like a reverse nail, thereby being beneficial to further enhancing the clamping and embedding fixing effect of the second side wall 102A12 and the first fixing plate 40B, and further being beneficial to ensuring the stability of the first side plate 102A and the first edge covering plate 40.

In some alternative embodiments, please refer to fig. 1, fig. 4 and fig. 5, in this embodiment, the width W1 of the first mesa 102a11 is greater than or equal to 1.3mm in the direction parallel to the light-emitting surface E of the backlight module 000, and the height H1 of the second sidewall 102a12 is greater than or equal to 3mm in the direction Z perpendicular to the light-emitting surface E of the backlight module 000.

In the step structure 102A1 of the first side plate 102A, in the direction parallel to the light emitting surface E of the backlight module 000, the width W1 of the first mesa 102A11 is greater than or equal to 1.3mm, and the first edge covering plate 40 can be effectively supported by the width W1, so as to avoid the situation that the first edge covering plate 40 easily falls off the step structure 102A1 due to the excessively narrow width W1 of the first mesa 102A11, and further facilitate improving the stability of the first edge covering plate 40. In addition, in the direction Z perpendicular to the light emitting surface E of the backlight module 000 in the embodiment, the height H1 of the second sidewall 102a12 is greater than or equal to 3mm, so that the second sidewall 102a12 has a sufficient height to set the groove 102a121 to be embedded with the bump 40B1, optionally, the height H2 of the groove 102a121 in the direction Z perpendicular to the light emitting surface E of the backlight module 000 is generally greater than or equal to 1.3mm, so as to ensure that the height of the bump 40B1 is sufficient to generate the effect of being embedded in the groove 102a121, and simultaneously avoid the situation that the height of the second sidewall 102a12 is too small, which easily causes the situation that there is not enough thickness space when the display panel 001 is assembled on the first edge covering plate 40, thereby achieving a better overall assembly effect of the module.

In some alternative embodiments, please refer to fig. 1, fig. 7, fig. 8 and fig. 9 in combination, fig. 7 is an enlarged view of a structure of a region C in fig. 1, fig. 8 is an enlarged view of another structure of a region C in fig. 1, and fig. 9 is an enlarged view of another structure of a region C in fig. 1, in this embodiment, a shape of a forward projection of the first buckle 401 to a plane where the back plate 101 is located includes any one of a straight line shape and a T-shape.

This embodiment explains that the first buckle 401 of the first edge covering plate 40 is embedded in the first slot 102A2 of the first side plate 102A, so that the first edge covering plate 40 and the first side plate 102A can be fixed, the bearing capacity and strength of the first edge covering plate 40 are improved, after the display panel 001 is assembled, the phenomenon that the first edge covering plate 40 collapses easily due to pressure generated by the weight of the display panel 001 in the direction Z perpendicular to the light emitting surface E of the backlight module 000 and the optical film 30 is crushed is prevented, and meanwhile, the shape of the orthographic projection of the first buckle 401 to the plane of the back plate 101 includes one of a straight shape (as shown in fig. 7) and a T shape (as shown in fig. 9), the shape of the orthographic projection of the first buckle 401 to the plane of the back plate 101 is the straight shape shown in fig. 7, or the oblique straight shape shown in fig. 8, so that the manufacturing process of the first buckle 401 can be simplified, the shape of the orthographic projection of the first buckle 401 to the plane of the back plate 101 is a T shape as shown in fig. 9, and the first buckle can be hooked better in the first clamping groove 102A2 through two protruding structures similar to ears of the T shape, which is beneficial to further improving the connection firmness of the first edge covering plate 40 and the first side plate 102A.

In some alternative embodiments, please refer to fig. 1, fig. 4 and fig. 10 in combination, fig. 10 is a schematic cross-sectional view taken along a direction a-a' in fig. 1, and a first double-sided adhesive AT2 is disposed between the first buckle 401 and the first card slot 102a 2.

The embodiment explains that the first buckle 401 of the first edge covering plate 40 is embedded in the first slot 102A2 of the first side plate 102A, so that the first edge covering plate 40 and the first side plate 102A can be fixed, the bearing capacity and the strength of the first edge covering plate 40 are improved, meanwhile, the first double-sided adhesive AT2 can be arranged between the first buckle 401 and the first slot 102A2, and the first double-sided adhesive AT2 which is thin in thickness and sticky is attached between the first buckle 401 and the first slot 102A2, so that the firmness between the first buckle 401 and the first side plate 102A is further enhanced.

In some optional embodiments, please refer to fig. 4, fig. 10, fig. 11, fig. 12, and fig. 13 in combination, where fig. 11 is another schematic plane structure diagram of a backlight module according to an embodiment of the present invention (it can be understood that fig. 11 is filled with transparency to clearly illustrate a structure of a housing in the backlight module according to the present embodiment), fig. 12 is a schematic cross-sectional structure diagram along the direction D-D' in fig. 11, fig. 13 is a schematic partial enlarged structure diagram of a position of a second side plate after the backlight module according to the present embodiment is assembled with a display panel, and the side plate 102 of the backlight module 000 according to the present embodiment further includes a second side plate 102B;

in a direction Z perpendicular to the light emitting surface E of the backlight module 000, a second edge-wrapping plate 50 is fixedly disposed on a side of the second side plate 102B away from the back plate 101.

In this embodiment, it is explained that the side plate 102 integrally formed with the back plate 101 may include the first side plate 102A in the above embodiment, and may further include the second side plate 102B, and optionally, the backlight module 000 of this embodiment may be a side-in type backlight, as shown in fig. 11, the plurality of light sources 20 arranged along the same direction may be disposed at the position of the second side plate 102B, so that the remaining first side plate 102A of the housing 10 does not need to consider the frame width occupied by the light sources 20, and only the first side plate 40 needs to be ensured to have enough supporting of the display panel, and at the same time, the width of the step structure 102A1 of the first side plate 102A may be reduced to the greatest extent, so that at least the first side plate 102A of the housing 10 realizes a narrow frame effect. The side plates 102 of the backlight module 000 of the embodiment include a second side plate 102B, and the first side plate 102A, the second side plate 102B and the back plate 101 may be integrally formed of the same material (it is understood that, in the drawing, only the first side plate 102A and the second side plate 102B are used for distinguishing, and different patterns are filled in the side plates, and when actually designed, the first side plate 102A, the second side plate 102B and the back plate 101 are made of the same material). In a direction Z perpendicular to the light emitting surface E of the backlight module 000, a second edge-wrapping plate 50 is fixedly disposed on a side of the second side plate 102B away from the back plate 101, and the optional second edge-wrapping plate 50 may be a structure wrapping an end portion of the second side plate 102B away from the back plate 101, so that the display panel 001 may be supported by the structure of the second edge-wrapping plate 50, and a space for placing the light source 20 and a flexible circuit board (not shown) for driving the light source 20 to emit light may be provided at the second side plate 102B while the optical film 30 is prevented from being damaged by pressure after assembly.

Optionally, with continuing reference to fig. 4, 10, 11, 12, and 13, the backlight module 000 in the embodiment may be a side-in type backlight, the optical film 30 at least includes a light guide plate 302, in a direction parallel to a light emitting surface E of the backlight module 000, the light source 20 is located at one side of the light guide plate 302, the light emitting surface 20E of the light source 20 faces the light guide plate 302, and the second side plate 102B is opposite to the light source 20; the optical film 30 may further include a diffusion sheet 303, a reflection sheet 301, a brightness enhancement sheet 304, and the like, and the plurality of light sources 20 are arranged along a long direction such that the light emitting surfaces of the light sources 20 face the side surface of the light guide plate 302, and form a surface light source by the light guiding effect of the light guide plate 302.

The second side panel 102B of the present embodiment includes a first sub-side panel 102B1 and a second sub-side panel 102B2, as shown in fig. 12, in a direction parallel to the light exiting surface E of the backlight module 000, the second sub-side panel 102B2 is located on a side of the first sub-side panel 102B2 away from the light source 20;

the second edge wrapping plate 50 includes a second supporting plate 50A and a second fixing plate 50B, which are disposed in an intersecting manner, the second supporting plate 50A is parallel to the light emitting surface E of the backlight module 000, the second supporting plate 50A extends in a direction away from the second sub-side plate 102B2, and the second fixing plate 50B intersects the light emitting surface E of the backlight module 000; optionally, in the embodiment, the second fixing plate 50B is perpendicular to the light emitting surface E of the backlight module 000 for example;

the second fixing plate 50B is located between the first sub-side plate 102B1 and the second sub-side plate 102B2, and the second fixing plate 50B is fixed to the first sub-side plate 102B1 in a clamping and embedding manner;

the second supporting plate 50A is attached and fixed to the side of the first sub-side plate 102B1 away from the back plate 101.

The embodiment explains that the second side panel 102B on the side of the side-entry light source may include a first sub-side panel 102B1 and a second sub-side panel 102B2, in a direction parallel to the light emitting surface E of the backlight module 000, the first sub-side panel 102B1 and the second sub-side panel 102B2 are connected to form the second side panel 102B, and the second sub-side panel 102B2 is located on the side of the first sub-side panel 102B2 away from the light source 20. The second edge wrapping plate 50 may be an inverted L-shaped structure formed by intersecting second supporting plates 50A and second fixing plates 50B, the second supporting plate 50A is located on a side of the first sub-side plate 102B1 away from the back plate 101, the second fixing plate 50B is located between the first sub-side plate 102B1 and the second sub-side plate 102B2, and is fixed to a side of the first sub-side plate 102B1 away from the back plate 101 by attaching the second supporting plate 50A to the side of the first sub-side plate 102B1, the second fixing plate 50B is fixed to the first sub-side plate 102B1 by snap-fitting, so as to fixedly connect the second edge wrapping plate 50 to the second side plate 102B, and a side of the second supporting plate 50A away from the back plate 101 may be used to support the display panel 001, so that the stable supporting performance of the second edge wrapping plate 50 may be ensured by setting a width of the second supporting plate 50A.

In some optional embodiments, please refer to fig. 11, 13, and 14 in combination, fig. 14 is a schematic cross-sectional view from D-D' to another in fig. 11, in this embodiment, a plurality of second slots 50B1 are disposed on the second fixing plate 50B, a plurality of second fasteners 102B11 corresponding to the second slots 50B1 are disposed on the first sub-side plate 102B1, and the first sub-side plate 102B1 is embedded in the second slots 50B1 by the second fasteners 102B11 and fixed to the second fixing plate 50B.

The embodiment explains that the second fixing plate 50B is fixed to the first sub-side plate 102B1 in an embedded manner, the second fixing plate 50B is provided with a plurality of second slots 50B1, the second slot 50B1 may be a hole structure penetrating through the thickness of the second fixing plate 50B, the first sub-side plate 102B1 is provided with a plurality of second fasteners 102B11 corresponding to the second slots 50B1, the second fasteners 102B11 may be a protruding structure, the first sub-side plate 102B1 is embedded in the second slots 50B1 through the second fasteners 102B11 to be fixed to the second fixing plate 50B, so that the second fixing plate 50B of the second edge wrapping plate 50 can be fixedly arranged between the first sub-side plate 102B1 and the second sub-side plate 102B2, and can be embedded in the second slot 50B1 through the second fasteners 102B11, and further enhance the fixing effect of the second edge plate 50B 102B to make the display panel 001 after being assembled, the supporting strength of the second hemming plate 50 can be further improved.

Optionally, please refer to fig. 11, 13, and 15 with continued reference, fig. 15 is a schematic cross-sectional structure diagram from D-D' to another in fig. 11, in which a second supporting plate 50A and a side of the first sub-side plate 102B1 away from the back plate 101 are further disposed to be attached and fixed, and a thin and adhesive structure, such as a double-sided adhesive AT3, may be disposed between the end portions of the second supporting plate 50A and the first sub-side plate 102B1 away from the back plate 101 to achieve fixed attachment, so as to ensure attachment flatness and firmness and avoid increasing the thickness of the entire module.

In some optional embodiments, please refer to fig. 16, 17 and 18 in combination, where fig. 16 is another schematic plane structure of the backlight module according to the embodiment of the present invention (it can be understood that fig. 16 is filled with transparency to illustrate the structure of the housing in the backlight module according to the present embodiment clearly), fig. 17 is a schematic sectional structure of the backlight module in the direction F-F 'in fig. 16, and fig. 18 is a schematic sectional structure of the backlight module in the direction G-G' in fig. 16, in the present embodiment, in the direction Z perpendicular to the light emitting surface E of the backlight module 000, a side of the second fixing plate 50B away from the back plate 101 further includes a plurality of third latches 501, an extending direction of the third latches 501 is parallel to the light emitting surface E of the backlight module 000, and the third latches 501 extend in a direction away from the first sub-side plate 102B 1;

a plurality of third slots 102B2 corresponding to the third fasteners 501 are formed in one side of the second sub-side plate 102B2 away from the back plate 101, and the second fixing plate 50B is inserted into the third slots 102B21 through the third fasteners 501 and fixed with the second sub-side plate 102B 2.

In the embodiment, it is explained that in the direction Z perpendicular to the light emitting surface E of the backlight module 000, one side of the second fixing plate 50B away from the back plate 101 further includes a plurality of third fasteners 501, optionally, the third fasteners 501 and the second edge covering plate 50 may be integrally formed by using the same material, which is beneficial to improving the process efficiency; the extending direction of the third buckle 501 is parallel to the light emitting surface E of the backlight module 000, the third buckle 501 extends in a direction away from the first sub-side plate 102B1, a plurality of third clamping grooves 102B21 corresponding to the third buckle 501 are disposed on one side of the second sub-side plate 102B2 away from the back plate 101, the surface of one side of the second sub-side plate 102B2 away from the back plate 101 is recessed in a direction close to the back plate 101 to form a third clamping groove 102B21, and the second fixing plate 50B of the second edge wrapping plate 50 is clamped and embedded in the third clamping groove 102B21 through the third buckle 501 and is fixed with the second sub-side plate 102B 2.

It should be noted that fig. 16 of the present embodiment only illustrates the number of the third buckles 501 and the corresponding third slots 102B21, but does not represent an actual number, in a specific implementation, the number of the third buckles 501 may be designed according to an actual size of the backlight module 000, and optionally, a plurality of the third buckles 501 may be uniformly arranged at the position of the second side plate 102B, that is, the distance between any two adjacent third buckles 501 may be set to be equal, so as to be beneficial to balance the fixing effect of the second edge-wrapping plate 50 and the second side plate 102B.

In some alternative embodiments, please refer to fig. 16, 19 and 20 in combination, fig. 19 is an enlarged view of a structure in a region I in fig. 16, fig. 20 is an enlarged view of another structure in a region I in fig. 16, and in this embodiment, a shape of a forward projection of the third buckle 501 to a plane where the back plate 101 is located includes any one of a straight line shape and a T-shape.

This embodiment explains that the third buckle 501 of the second bezel 50 is embedded in the third slot 102B21 of the second sub-side plate 102B2, so that the second bezel 50 and the second side plate 102B can be fixed, the carrying capacity and strength of the second bezel 50 can be improved, after the display panel 001 is assembled, the phenomenon that the second bezel 50 collapses easily due to the pressure generated by the weight of the display panel 001 in the direction Z perpendicular to the light emitting surface E of the backlight module 000 and the optical film 30 is crushed can be prevented, and meanwhile, the shape of the orthographic projection of the third buckle 501 to the plane of the back plate 101 includes one of a straight shape (as shown in fig. 19) or a T-shape (as shown in fig. 20), the shape of the orthographic projection of the third buckle 501 to the plane of the back plate 101 is the straight shape as shown in fig. 19, so that the manufacturing process of integrally molding the third buckle 501 and the second bezel 50 can be simplified, the shape of the orthographic projection of the third buckle 501 to the plane of the back plate 101 is a T shape as shown in fig. 20, and the third buckle can be hooked better in the third clamping groove 102B21 by two protruding structures similar to ears of the T shape, which is beneficial to further improving the connection firmness of the second edge wrapping plate 50 and the second side plate 102B.

In some alternative embodiments, please refer to fig. 16 and 21 in combination, fig. 21 is another sectional structure schematic view along direction F-F' in fig. 16, and a second double-sided adhesive AT4 is disposed between the third buckle 501 and the third slot 102B 21.

The embodiment explains that the third buckle 501 of the second hem plate 50 is embedded in the third slot 102B21 of the second sub-side plate 102B2, so that the second hem plate 50 and the second side plate 102B can be fixed, the bearing capacity and the strength of the second hem plate 50 are improved, meanwhile, the second double-sided adhesive AT4 can be arranged between the third buckle 501 and the third slot 102B21, and the third buckle 501 and the second sub-side plate 102B2 are further enhanced by attaching the second thin-thickness sticky double-sided adhesive AT4 to the third buckle 501 and the third slot 102B 21.

In some alternative embodiments, please refer to fig. 11 and 12 in combination, in the embodiment, in the direction parallel to the light emitting surface E of the backlight module 000, the width W2 of the first sub-side plate 102B1 is greater than or equal to 1.5mm along the direction in which the first sub-side plate 102B1 points to the second sub-side plate 102B 2.

In the second side plate 102B, the first sub-side plate 102B1 serving to support the second edge-wrapping plate 50 may be designed such that the width W2 of the first sub-side plate 102B1 is greater than or equal to 1.5mm in a direction parallel to the light emitting surface E of the backlight module 000 along the direction from the first sub-side plate 102B1 to the second sub-side plate 102B2, so that the width of the first sub-side plate 102B1 supporting the second edge-wrapping plate 50 is greater, and the second edge-wrapping plate 50 may be effectively supported by the width, thereby preventing the width W2 of the first sub-side plate 102B1 from being too narrow, which may cause damage to the first sub-side plate 102B1 when the second edge-wrapping plate 40 is pressed down, which may affect the stability of the module.

In some alternative embodiments, please refer to fig. 1-4 and fig. 22 in combination, fig. 22 is a schematic plan structure diagram of a display device according to an embodiment of the present invention, and the display device 111 according to the embodiment includes the backlight module 000 according to the above embodiment of the present invention. The embodiment of fig. 22 is only an example of a mobile phone, and the display device 111 is described, it is understood that the display device 111 provided in the embodiment of the present invention may be another display device 111 having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. Optionally, as shown in fig. 22 and 23, fig. 23 is a schematic cross-sectional view taken along a direction J-J' in fig. 22, in which the display device 000 of the embodiment includes a display panel 001 and a backlight module 000, the display panel 001 is disposed on one side of a light-emitting surface E of the backlight module 000; the display panel 001 is disposed on the first edge covering plate 40. As a further alternative, when the side panel 102 further includes the second side panel 102B, the first and second edge-covering

panels

40 and 50 are used to jointly carry the display panel 001 (not shown in the drawings, and can be specifically understood in conjunction with the embodiments shown in fig. 11 to 13). The display device 111 provided in the embodiment of the present invention has the beneficial effects of the backlight module 000 provided in the embodiment of the present invention, and specific descriptions of the backlight module 000 in the above embodiments may be specifically referred to, and details of the embodiment are not repeated herein.

In some alternative embodiments, please refer to fig. 22 and 24 in combination, fig. 24 is another sectional view taken along direction J-J' of fig. 22, and a first cushion 60 is disposed between the display panel 001 and the first edge covering plate 40.

This embodiment explains when backlight unit 000 and display panel 001 equipment, display panel 001 sets up on first board 40 that bordures, be provided with first blotter 60 between display panel 001 and the first board 40 that bordures, first blotter 60 can be the cotton double faced adhesive tape of bubble, not only the material is softer, play the effect of the glass substrate of buffering display panel 001, prevent that the poor demonstration of the uneven display brightness (mura class) from appearing in the glass substrate edge atress of display panel 001, can also play the effect of fixed display panel 001 and first board 40 that bordures. Optionally, when the side panel 102 further includes a second side panel 102B, the first edge covering panel 40 and the second edge covering panel 50 are used to jointly bear the display panel 001, and the buffer pad (not shown in the drawings) may also be disposed between the display panel 001 and the second edge covering panel 50, which can be understood by specifically referring to the embodiments shown in fig. 11 to 13, and this embodiment is not described herein again.

By the embodiment, the backlight module and the display device provided by the invention at least realize the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A backlight module is characterized by comprising a shell, a light source and a plurality of optical films, wherein the shell forms a space for accommodating the light source and the optical films;

the shell comprises a back plate and a side plate which are connected, the extending direction of the back plate is parallel to the light-emitting surface of the backlight module, and the extending direction of the side plate is intersected with the light-emitting surface of the backlight module;

the side plates at least comprise a first side plate, one side of the first side plate, which is far away from the back plate, in the direction perpendicular to the light-emitting surface of the backlight module comprises a step structure, and a first edge-wrapping plate is fixedly arranged on the step structure;

in the direction perpendicular to the light-emitting surface of the backlight module, one side of the first edge covering plate, which is far away from the back plate, further comprises a plurality of first buckles, the extending direction of the first buckles is parallel to the light-emitting surface of the backlight module, and the first buckles extend towards the direction close to the first side plate;

one side of the first side plate, which is far away from the back plate, is provided with a plurality of first clamping grooves corresponding to the first buckles, and the first edge covering plate is clamped and embedded in the first clamping grooves through the first buckles and is fixed with the first side plate.

2. The backlight module according to claim 1,

the step structure comprises a first table top and a second side wall, the first table top is parallel to the light-emitting surface of the backlight module, and the second side wall is intersected with the light-emitting surface of the backlight module;

the first edge covering plate comprises a first supporting plate and a first fixing plate which are arranged in an intersecting manner, the first supporting plate is parallel to the light emitting surface of the backlight module, the first supporting plate extends towards the direction far away from the first side plate, and the first fixing plate is intersected with the light emitting surface of the backlight module;

in the direction perpendicular to the light-emitting surface of the backlight module, the first buckle is arranged on one side of the first fixing plate, which is far away from the back plate;

the first fixing plate is fixedly embedded with the second side wall in a clamping mode, and the first supporting plate is fixedly attached to the first table top.

3. The backlight module as claimed in claim 2, wherein a plurality of protrusions are disposed on a side of the first fixing plate facing the second sidewall, a plurality of grooves corresponding to the protrusions are disposed on the second sidewall, and the first fixing plate is engaged with the first sidewall by the protrusions.

4. The backlight module as claimed in claim 2, wherein the width of the first mesa is greater than or equal to 1.3mm in a direction parallel to the light-emitting surface of the backlight module, and the height of the second sidewall is greater than or equal to 3mm in a direction perpendicular to the light-emitting surface of the backlight module.

5. The backlight module according to claim 1, wherein the shape of the orthographic projection of the first clip onto the plane of the back plate comprises any one of a straight line shape and a T shape.

6. The backlight module as claimed in claim 1, wherein a first double-sided adhesive is disposed between the first clip and the first clip groove.

7. A backlight module according to claim 1, wherein the side panel further comprises a second side panel;

and a second edge wrapping plate is fixedly arranged on one side of the second side plate, which is far away from the back plate, in the direction vertical to the light emergent surface of the backlight module.

8. The backlight module according to claim 7,

the optical film at least comprises a light guide plate, the light source is positioned on one side of the light guide plate in the direction parallel to the light emitting surface of the backlight module, the light emitting surface of the light source faces the light guide plate, and the second side plate is opposite to the light source;

the second side plate comprises a first sub-side plate and a second sub-side plate, and the second sub-side plate is positioned on one side of the first sub-side plate, which is far away from the light source, in the direction parallel to the light-emitting surface of the backlight module;

the second edge wrapping plate comprises a second supporting plate and a second fixing plate which are arranged in an intersecting manner, the second supporting plate is parallel to the light emitting surface of the backlight module, the second supporting plate extends towards the direction far away from the second sub-side plate, and the second fixing plate is intersected with the light emitting surface of the backlight module;

the second fixing plate is positioned between the first sub-side plate and the second sub-side plate, and the second fixing plate and the first sub-side plate are fixedly clamped;

the second supporting plate and one side, far away from the back plate, of the first sub-side plate are fixedly attached to each other.

9. The backlight module as claimed in claim 8, wherein the second fixing plate has a plurality of second engaging grooves, the first sub-side plate has a plurality of second engaging hooks corresponding to the second engaging grooves, and the first sub-side plate is engaged with the second engaging grooves and fixed to the second fixing plate.

10. The backlight module as claimed in claim 8, wherein a side of the second fixing plate away from the back plate in a direction perpendicular to the light emitting surface of the backlight module further comprises a plurality of third fasteners, the extending direction of the third fasteners is parallel to the light emitting surface of the backlight module, and the third fasteners extend in a direction away from the first sub-side plate;

one side of the second sub-side plate, which is far away from the back plate, is provided with a plurality of third clamping grooves corresponding to the third clamping buckles, and the second fixing plate is embedded in the third clamping grooves through the third clamping buckles and fixed with the second sub-side plate.

11. The backlight module according to claim 10, wherein the shape of the orthographic projection of the third clip onto the plane of the back plate comprises any one of a straight line shape and a T shape.

12. The backlight module as claimed in claim 10, wherein a second double-sided adhesive is disposed between the third clip and the third clip groove.

13. The backlight module according to claim 8, wherein a width of the first sub-side plate is greater than or equal to 1.5mm in a direction parallel to a light emitting surface of the backlight module and along a direction in which the first sub-side plate points to the second sub-side plate.

14. The backlight module according to claim 1, wherein the housing is made of cast aluminum, and the first edge covering plate is made of sheet metal.

15. A display device, comprising a display panel and the backlight module as claimed in any one of claims 1 to 14, wherein the display panel is disposed at one side of a light-emitting surface of the backlight module; the display panel is arranged on the first edge covering plate.

16. The display device according to claim 15, wherein a first cushion pad is disposed between the display panel and the first edge covering plate.