CN218351066U - Backlight module and display device - Google Patents

Abstract

The application discloses a backlight module and a display device, wherein the backlight module comprises a back plate, a lamp plate, a reflector plate and a supporting structure; the back plate is provided with a bearing surface, and the bearing surface comprises a first bearing area and a second bearing area; the lamp panel is arranged on the bearing surface and comprises a first part and a plurality of second parts connected with the first part, the first part is arranged in the first bearing area, the second parts are arranged in the second bearing area, and the second parts are arranged at intervals along the length direction of the first part; the reflector plate is covered on the lamp panel; the support structure is disposed between adjacent second portions. The utility model provides a bearing structure can support the reflector plate and cover the part in the clearance between the adjacent second portion, can avoid the reflector plate to warp or alleviate the reflector plate and warp to alleviate and cause too big influence to the reflector plate roughness, thereby alleviate the influence to the light reflex, thereby guarantee that backlight unit luminous brightness is nearly even, alleviate display device and show and present dark line, thereby promote display device's display effect.

Description

Backlight module and display device

Technical Field

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

Background

Because the pectination lamp plate compares in traditional rectangle lamp plate has very big cost advantage, more and more display device's backlight unit adopts the pectination lamp plate as the light emitting source in the existing market.

In the related art, since the comb-shaped lamp panel has a plurality of gaps, the flatness of the reflector plate arranged on the comb-shaped lamp panel cannot be guaranteed, the reflection of the reflector plate on light is affected, and the light emitted by the backlight module is uneven, so that the display device displays a shadow.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a backlight module and a display device, and aims to solve the problem that the display device presents a shadow.

In a first aspect, an embodiment of the present application provides a backlight module, including:

the back plate is provided with a bearing surface, and the bearing surface comprises a first bearing area and a second bearing area;

the lamp panel is arranged on the bearing surface and comprises a first part and a plurality of second parts connected with the first part, the first part is arranged in the first bearing area, the second parts are arranged in the second bearing area, and the second parts are arranged at intervals along the length direction of the first parts;

the reflector plate is covered on the lamp panel; and

a support structure disposed between adjacent second portions.

Optionally, the support structure includes a plurality of support plates, one support plate is disposed between each adjacent second portions, and the support plates extend along the length direction of the second portions.

Optionally, the width of the supporting plate is smaller than or equal to the distance between two adjacent second portions.

Optionally, one side of the supporting plate, which faces away from the back plate, is flush with the bearing surface.

Optionally, the support structure further includes a connecting plate, and the connecting plate extends along the arrangement direction of the plurality of support plates and connects each of the support plates.

Optionally, the second portion includes a main body and a plurality of branches, the main body is connected to the first portion and extends in a direction away from the first portion, and the plurality of branches are connected to two opposite sides of the main body and are arranged at intervals along a length direction of the main body;

first gaps are formed between the branch parts corresponding to the second parts respectively at intervals, second gaps are formed between the branch parts adjacent to the second parts at intervals, and the supporting structure is at least arranged in the first gaps.

Optionally, the support structure includes a first support portion and a plurality of second support portions, the first support portion extends along the length direction of the main body, and the plurality of second support portions are connected to two opposite sides of the first support portion and are arranged at intervals along the length direction of the first support portion; the first supporting portion is disposed in the first gap, and the second supporting portion is disposed in the second gap.

Optionally, the backlight module further includes:

the diffusion plate is arranged opposite to the lamp panel at intervals; and

and the bracket is fixed on the back plate and positioned between two adjacent second parts, and is used for supporting the diffusion plate.

Optionally, the support structure is provided with an avoidance hole for the support to pass through.

In a second aspect, an embodiment of the present application further provides a display device, which includes a display module and the backlight module according to any of the above embodiments, where the backlight module is disposed on one side of the display module.

In the backlight unit of this application embodiment, through be provided with bearing structure between adjacent second part, when the reflector plate is heated to soften and produces the undercut trend in the luminous in-process of lamp plate, bearing structure can support the reflector plate and cover the part in the clearance between the adjacent second part, thereby prevent that the reflector plate is heated to soften and the undercut, can avoid the reflector plate to warp or alleviate the reflector plate and warp, thereby alleviate the influence that causes the reflector plate roughness, thereby reduce the influence to the ray reflection, make reflector plate reflection light approach even, thereby guarantee that backlight unit luminance approaches even, and then reduce display device and show and present dark line, promote display device's display effect.

Drawings

The technical solutions and advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic partial structural diagram of a backlight module according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural view of a lamp panel of a backlight module according to an embodiment of the present application.

FIG. 3 is a top view of the lamp panel and the backplane assembly of the embodiment of the present application.

Fig. 4 is the assembly sketch map of backup pad and lamp plate in this application.

Fig. 5 is an assembly schematic view of another embodiment of the support plate and the lamp panel in the present application.

Fig. 6 is a schematic structural diagram of another embodiment of the lamp panel of the present application.

Fig. 7 is a schematic view of the assembly of another embodiment of the lamp panel and an embodiment of the support structure in the present application.

Fig. 8 is a schematic view of the assembly of another embodiment of the lamp panel and another embodiment of the support structure in the present application.

FIG. 9 is a schematic structural diagram of an embodiment of a support structure.

Fig. 10 is a schematic structural diagram of another embodiment of a backlight module according to the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a backlight module and a display device, and aims to solve the problem that the display device displays a dark shadow.

Referring to fig. 1, fig. 1 is a schematic partial structural view of a backlight module according to an embodiment of the present disclosure, in which a backlight module 100 includes a back plate 10, a lamp panel 20, and a reflector sheet 30.

The back panel 10 has a carrying surface (not shown), and the lamp panel 20 is disposed on the carrying surface. It can be understood that backplate 10 is used for as the carrier in order to bear lamp plate 20, and simultaneously, backplate 10 still is used for playing the radiating effect to absorb and transmit the heat that produces in the lamp plate 20 working process, avoid lamp plate 20 high temperature and influence its normal luminous.

In order to reduce the production cost, in the embodiment of the present application, the lamp panel 20 is a "comb-shaped" lamp panel, please refer to fig. 2, and the lamp panel 20 includes a first portion 21 and a plurality of second portions 22 connected to the first portion 21.

Referring to fig. 3, the carrying surface includes a first carrying area 11 and a second carrying area 12 (shown by a dashed line frame in the figure), the first portion 21 is disposed in the first carrying area 11, the second portion 22 is disposed in the second carrying area 12, and the plurality of second portions 22 are arranged at intervals along a length direction of the first portion 21.

Wherein, each second portion 22 has a plurality of lamp beads 23.

As shown in fig. 2, lamp plate 20 is whole to be the pectination, compare with traditional rectangle lamp plate 20, lamp pearl 23 quantity of lamp plate 20 of this application embodiment can accomplish to be the same with traditional rectangle lamp plate 20, its luminous luminance can be unanimous with traditional rectangle lamp plate 20 promptly, but its base plate area will be less than traditional lamp plate, and lamp plate 20 of this application embodiment can be made the symmetry cutting on a substrate and form (two lamp plate 20 can be makeed to a substrate promptly), so, the cost of producing this lamp plate 20 will be with low costs than traditional rectangle lamp plate, has very big cost advantage.

Wherein, the specific quantity of lamp plate 20 is decided according to display device's size to the TV set is for example, because the TV set size is generally great, and large size can not be accomplished to lamp plate 20, so the TV set adopts a plurality of lamp plate 20 concatenations to arrange on backplate 10 usually.

It should be noted that, because a gap is formed between every two adjacent second portions 22 of the lamp panel 20, the overall rigidity and strength of the lamp panel 20 are low, if screws are used for locking, the number of the screws needs to be increased, and if the number of the screws is too large, the assembly process is complicated, and the screw cost is increased, so the lamp panel 20 is preferably adhered to the backboard 10 by glue.

Referring to fig. 1, the reflector 30 covers the lamp panel 20. Wherein, the reflector plate 30 is provided with the first via hole 31 that supplies lamp pearl 23 to pass, and the reflector plate 30 is used for the light that reflection lamp pearl 23 sent to strengthen backlight unit 100's luminous luminance.

The reflective sheet 30 may be made of a material with high reflectivity, or formed by coating a material with high reflectivity on a common substrate, or made of a substrate with a specular reflection function, and the specific structural composition of the reflective sheet 30 is not limited herein.

It can be understood that, in order to fully reflect the light emitted by the lamp beads 23, the reflector sheet 30 needs to cover the whole lamp panel 20 (when the lamp panel 20 is multiple, the reflector sheet 30 covers all the lamp panels 20), that is, the gap between every two adjacent second portions 22 of the lamp panel 20 is also covered by the reflector sheet 30.

However, in the process of lighting the lamp panel 20, heat generated by the lamp panel 20 is conducted to the reflector sheet 30, the reflector sheet 30 is heated to expand and soften, and the portion of the reflector sheet 30 covering the gap between the two adjacent second portions 22 is recessed downward, so that the reflection of light is affected, and the reflected light reflected to some parts of the diffusion plate of the backlight module is more, and the reflected light of some parts is less, so that the brightness of the light is not uniform, and the display device displays a dark shadow.

In order to solve the above problem, in the embodiment of the present application, please refer to fig. 1 and fig. 4, the backlight module 100 further includes a supporting structure 40, and the supporting structure 40 is disposed between the adjacent second portions 22.

The support structure 40 may have various forms, for example, a strip-shaped support strip may be disposed between adjacent second portions 22, or a plurality of block-shaped support blocks may be disposed between adjacent second portions 22.

The supporting structure 40 may be disposed between every two adjacent second portions 22, or disposed between two adjacent second portions 22. The thickness of the supporting structure 40 may be the same as that of the lamp panel 20, or slightly smaller than that of the lamp panel 20.

It can be understood, through be provided with bearing structure 40 between adjacent second part 22, when the luminous in-process reflector plate 30 of lamp plate 20 is heated and is softened and produce the undercut trend, bearing structure 40 can support the reflector plate 30 and cover the part in the clearance between adjacent second part 22, thereby prevent reflector plate 30 to be heated and soften and undercut, can avoid reflector plate 30 to warp or alleviate reflector plate 30 and warp, thereby alleviate the influence that leads to the fact to reflector plate 30 roughness, thereby reduce the influence to the light reflex, make reflector plate 30 reflection light approach even, thereby guarantee that 100 luminous luminance of backlight unit is approach even, and then reduce display device and show and present the dark line, promote display device's display effect.

Further, in the embodiment of the present application, as shown in fig. 4, the supporting structure 40 includes a plurality of supporting plates 41, one supporting plate 41 is disposed between each adjacent second portions 22, and the supporting plates 41 extend along the length direction of the second portions 22.

It can be understood that, by arranging the supporting structure 40 as the supporting plates 41 extending along the length direction of the second portion 22, that is, only one supporting plate 41 needs to be arranged between adjacent second portions 22, the installation of the supporting structure 40 can be facilitated, and the assembly efficiency of the backlight module 100 can be improved; moreover, by arranging a supporting plate 41 between every two adjacent second portions 22, the part of the reflective sheet 30 corresponding to the gap between any two adjacent second portions 22 can be supported by the supporting plate 41, and the flatness of the reflective sheet 30 when heated is further ensured.

Further, in an embodiment of the present application, the support plate 41 and the second portion 22 preferably have substantially the same length.

In the embodiment of the present application, the width of the support plate 41 is smaller than or equal to the interval between the adjacent two second portions 22.

It should be noted that, for the supporting plate 41 with a width equal to the distance between the adjacent second portions 22 (or the supporting plate with a width slightly smaller than the distance between the adjacent second portions 22), because the supporting plate 41 is heated and slightly expands in the light emitting process of the lamp panel 20, in order to prevent the supporting plate 41 from expanding and arching due to the extrusion of the second portions 22 of the lamp panel 20, the supporting plate 41 may be provided with a hollow portion, so that the expansion deformation of the supporting plate 41 can be transferred to the hollow portion, and the supporting plate 41 and the second portions 22 are prevented from being extruded. The hollow portion may be a small hole penetrating the upper and lower surfaces of the support plate 41, or a small groove provided on the back surface (the surface facing away from the reflective sheet) of the support plate 41.

Further, in an embodiment of the present application, it is preferable that: the width of the supporting plate 41 is smaller than the interval between two adjacent second portions 22, and the width of the supporting plate 41 is substantially the same as the interval between two adjacent second portions 22. Thus, the supporting plate 41 can be quickly and conveniently installed between two adjacent second portions 22, and the supporting plate 41 has a sufficient area to sufficiently support the portion of the reflective sheet 30 covering between two adjacent second portions 22, and can avoid the supporting plate 41 from being pressed against the second portions 22 and arching when expanding.

It will be appreciated that in order to prevent the support plate 41 from being removed from the gap between two adjacent second portions 22 (for example, when the display device is placed upside down during transportation), the support plate 41 is adhesively secured to the back plate 10.

Further, in order to further guarantee that backlight unit 100 luminance is even, further improve display device's display effect, in this application implementation, one side that backup pad 41 deviates from backplate 10 flushes with one side that lamp plate 20 deviates from backplate 10.

So, one side that deviates from backplate 10 through setting up backup pad 41 flushes with one side that lamp plate 20 deviates from backplate 10, thereby make backup pad 41 and reflector plate 30 cover the part in the clearance department between two adjacent second parts 22 contact all the time, thereby stop to take place reflector plate 30 and be heated the condition of becoming soft and undercut, guarantee reflector plate 30's roughness, thereby it is even to guarantee reflector plate 30 reflection light everywhere, and then guarantee that backlight unit 100 luminous luminance is even, and then avoid appearing the condition that display device shows the shadow.

It can be understood that, in order to realize that one side of the support plate 41 departing from the backboard 10 is flush with one side of the lamp panel 20 departing from the backboard 10, the thickness of the support plate 41 is the same as that of the lamp panel 20.

Specifically, in the assembly process of the backlight module 100, firstly, glue is uniformly applied to the backplane 10 (or double-sided adhesive is used for adhering to the backplane 10), so that the thicknesses of adhesive layers at various positions of the backplane 10 are approximately the same, then, the lamp panel 20 is adhered to the adhesive layers, in the process of adhering the lamp panel 20, the first part 21 needs to be positioned and adhered first, and then, the second part 22 is adhered, because the second part 22 is arranged at a plurality of intervals on one side of the lamp panel 20, the flexibility of the second part 22 is good, in the positioning and adhering process of the first part 21, one end, far away from the first part 21, of the second part 22 is easy to bend and contact with the adhesive layers, so that the adhering smoothness of the lamp panel 20 is difficult to guarantee, when the first part 21 (namely, the head of the lamp panel 20) is positioned and adhered, a jig is used for lifting up one end, far away from the first part 21, of the second part 22 (namely, the tail of the lamp panel 20) simultaneously, after the first part 21 is adhered, the jig is removed, so that the second part 22 falls onto the adhesive layer by self-falling onto the adhesive layer, the adhesive layer of the lamp panel 20 can be guaranteed, the adhering part 41, the adjacent support plate is separated from the adjacent support plate 41, and one side of the support plate 41, and the support plate is close to the adjacent support plate 41, so that the adjacent support plate 10 is flush.

Further, in order to facilitate the installation of the supporting plates 41, in an embodiment of the present application, referring to fig. 5, the supporting structure 40 further includes a connecting plate 42, and the connecting plate 42 extends along the arrangement direction of the supporting plates 41 and connects each of the supporting plates 41.

It can be understood that, connect a plurality of backup pads 41 through setting up connecting plate 42 for a plurality of backup pads 41 are connected as a whole, in the installation, with connecting plate 42 with a plurality of backup pads 41 be connected whole directly paste to backplate 10 on can, need not to paste a plurality of backup pads 41 one by one, thereby avoid repetitive operation, reduce the time of installation bearing structure 40, improve assembly efficiency.

Moreover, the plurality of support plates 41 are connected by the connecting plate 42, and the connecting plate 42 is comb-shaped as a whole connected with the plurality of support plates 41, so that the support plates 41 and the connecting plate 42 can be integrally formed (for example, laser cutting formation), and the processing is convenient; moreover, the whole body formed by the supporting plate 41 and the connecting plate 42 can be symmetrically cut on a whole plate, so that materials are fully utilized, and the waste of the materials is avoided.

Referring to fig. 6 and 7, in another embodiment of the present application, the second portion 22 includes a main body 221 and a plurality of branches 222, the main body 221 is connected to the first portion 21 and extends in a direction away from the first portion 21, and the plurality of branches 222 are connected to two opposite sides of the main body 221 and are arranged at intervals along a length direction of the main body 221; a first gap a is formed between the corresponding branches 222 of each adjacent second portion 22, a second gap B is formed between each adjacent branches 222 of each second portion 22, and the support structure 40 is at least disposed in the first gap a.

It is understood that the support structure 40 is disposed at least in the first gap a, that is, the support structure 40 may be disposed only in the first gap a, or both the first gap a and the second gap B may be disposed.

As shown in fig. 7, in this embodiment, the branch portions 222 are connected to the side of the main body 221 and extend along the arrangement direction of the plurality of second portions 22, the second gap B formed between every two adjacent branch portions 222 is smaller, if the supporting plate 41 is only disposed in the first gap a, the supporting plate 30 is still supported by a specific enough supporting area, and the portion of the reflecting plate 30 covering the second gap B is recessed to a very small extent, so that the influence on the light reflection is small.

Referring to fig. 6, 8 and 9, in another embodiment of the present application, the supporting structure 40 includes a first supporting portion 411 and a plurality of second supporting portions 412, the first supporting portion 411 extends along a length direction of the main body 221, and the plurality of second supporting portions 412 are connected to two sides of the first supporting portion 411 and are arranged at intervals along the length direction of the first supporting portion 411; the first supporting portion 411 is disposed in the first gap a, and the second supporting portion 412 is disposed in the second gap B.

It can be understood, through being the above-mentioned shape with the design of backup pad 41, make first supporting part 411 set up in first clearance A, second supporting part 412 sets up in second clearance B, so, the reflector plate 30 of arbitrary clearance department of lamp plate 20 all can receive backup pad 41's support, thereby prevent reflector plate 30 to be heated undercut in the at utmost, thereby guarantee reflector plate 30's roughness in the at utmost, thereby guarantee that reflector plate 30 reflection light is even, and then guarantee that backlight unit 100 luminous luminance is even, avoid display device to show and present the shadow, and then promote display device's display effect.

Referring to fig. 10, in the embodiment of the present invention, the backlight module 100 further includes a diffuser plate 50, the diffuser plate 50 and the lamp panel 20 are disposed at an interval, and the diffuser plate 50 has a light diffusion function to diffuse the light emitted by the lamp beads 23 and the light reflected by the reflector 30, so as to increase the light emitting angle of the light, fully mix the light, and further make the light emitted by the backlight module 100 uniform.

In order to arrange the diffusion plate 50 and the lamp panel 20 at an interval, the backlight module 100 further includes a bracket 60, the bracket 60 is fixed on the back plate 10 and located between two adjacent second portions 22, and the bracket 60 is used for supporting the diffusion plate 50.

As shown in fig. 10, the bracket 60 includes a base 61 and a supporting column 62, the base 61 is adhered to the housing 10, the supporting column 62 is connected to a side of the base 61 away from the housing 10 and extends toward a direction away from the base 61, the supporting column 62 supports the diffusion plate 50, and for avoiding the reflection sheet 30 so that the supporting column 62 can support the diffusion plate 50, the reflection sheet 30 is provided with a second through hole (not labeled) for the bracket 60 to pass through.

Since the bracket 60 is disposed between two adjacent second portions 22 and the base 61 of the bracket 60 is adhered to the back plate 10, in order to avoid the base 61, in the embodiment of the present application, the support structure 40 is provided with an avoiding hole 413 for the bracket 60 to pass through.

The embodiment of the application further provides a display device, the display device comprises a display module and a backlight module 100 based on the design concept, and the backlight module 100 is arranged on one side of the display module.

Further, the display device is a television.

The display device of the embodiment of the application is through adopting above-mentioned backlight unit 100, backlight unit 100 is through being provided with bearing structure 40 between adjacent second portion 22, when reflector plate 30 is heated and softened and produces the undercut trend in the luminescent process of lamp plate 20, bearing structure 40 can support the part in the clearance of reflector plate 30 cover between adjacent second portion 22, thereby prevent reflector plate 30 to be heated and softened and undercut, can avoid reflector plate 30 to warp or alleviate reflector plate 30 and warp, thereby alleviate the influence that causes reflector plate 30 roughness, thereby reduce the influence to light reflex, make reflector plate 30 reflection light approach even, thereby guarantee that backlight unit 100 approaches even, and then reduce display device and show and present dark line, promote display device's display effect.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The backlight module and the display device provided by the embodiment of the present application are described in detail above, and a specific example is applied to illustrate the principle and the embodiment of the present application, and the description of the embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A backlight module, comprising:

the back plate is provided with a bearing surface, and the bearing surface comprises a first bearing area and a second bearing area;

the lamp panel is arranged on the bearing surface and comprises a first part and a plurality of second parts connected with the first part, the first part is arranged in the first bearing area, the second parts are arranged in the second bearing area, and the second parts are arranged at intervals along the length direction of the first parts;

the reflector plate is covered on the lamp panel; and

a support structure disposed between adjacent second portions.

2. A backlight module according to claim 1, wherein the support structure comprises a plurality of support plates, one support plate is disposed between each adjacent second portions, and the support plates extend along the length of the second portions.

3. A backlight module according to claim 2, wherein the width of the supporting plate is less than or equal to the distance between two adjacent second portions.

4. The backlight module according to claim 2, wherein a side of the supporting plate facing away from the back plate is flush with the carrying surface.

5. The backlight module according to claim 2, wherein the supporting structure further comprises a connecting plate extending along the arrangement direction of the supporting plates and connecting each of the supporting plates.

6. The backlight module as claimed in claim 1, wherein the second portion comprises a main body connected to the first portion and extending away from the first portion, and a plurality of branches connected to opposite sides of the main body and spaced apart from each other along a length of the main body;

first gaps are formed between the corresponding branch parts of every two adjacent second parts at intervals, second gaps are formed between every two adjacent branch parts of every two adjacent second parts at intervals, and the supporting structure is at least arranged in the first gaps.

7. The backlight module according to claim 6, wherein the support structure comprises a first support portion extending along a length direction of the main body and a plurality of second support portions connected to opposite sides of the first support portion and arranged at intervals along the length direction of the first support portion; the first supporting portion is disposed in the first gap, and the second supporting portion is disposed in the second gap.

8. A backlight module according to claim 1, further comprising:

the diffusion plate is arranged opposite to the lamp panel at intervals; and

and the bracket is fixed on the back plate and positioned between two adjacent second parts, and is used for supporting the diffusion plate.

9. The backlight module according to claim 8, wherein the supporting structure is provided with an avoiding hole for the bracket to pass through.

10. A display device, comprising a display module and the backlight module according to any one of claims 1 to 9, wherein the backlight module is disposed on one side of the display module.

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