CN218567789U

CN218567789U - Backlight module and display device

Info

Publication number: CN218567789U
Application number: CN202223195067.4U
Authority: CN
Inventors: 何胜斌; 朱为国; 陈坤涌; 吴钊剑
Original assignee: Shenzhen MTC Co Ltd
Current assignee: Shenzhen MTC Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-03
Anticipated expiration: 2032-11-29

Abstract

The application provides a backlight module, which comprises a back plate, a light bar and a supporting device; the lamp strip is provided with a through hole, the supporting device comprises a supporting column and a first step part arranged at one end of the supporting column, wherein the supporting column can penetrate through the through hole so as to arrange the lamp strip on one side of the first step part facing the supporting column, and meanwhile, one side of the first step part, which deviates from the supporting position, is fixedly connected to the back plate, so that the lamp strip is fixed to the back plate, and a gap can be formed between the back plate and the lamp strip, therefore, air in the backlight module can continuously enter the gap to dissipate heat of the lamp strip, and the situation that the back plate shakes to damage a circuit board on the lamp strip can be avoided in the process of transporting the backlight module; meanwhile, the support columns can also support the existing diffusion plate in the backlight module so as to prevent the diffusion plate from influencing the light bar; in addition, the backlight unit assembly that this application embodiment provided is simple, has further improved the assembly efficiency of production line.

Description

Backlight module and display device

Technical Field

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

Background

Nowadays, with the continuous improvement of the technology level and the living standard, the demand of consumers for light and thin displays is increasing, wherein liquid crystal displays are gradually becoming mainstream products in the display field due to the advantages of small size and light weight. For the lcd, the lcd panel inside the lcd does not emit light, and a light source needs to be provided for the lcd panel through the backlight module.

The existing backlight module is usually used for sticking a light-emitting light bar on a back plate, so that the light bar is fixed, the situation that the light bar falls off in the motion process of the backlight module is avoided, and the good display effect of the backlight module is ensured. However, heat is generated in the light emitting process of the light bar, and the heat can reduce the adhesive force of the adhesive tape for adhering the light bar under the influence of temperature, and the light bar gradually loosens or even falls off, so that the stable connection of the light bar on the back plate cannot be realized.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a backlight module and a display device, so that the problem that a light bar is pasted on a back plate by the existing backlight module and can gradually loosen or even fall off under the influence of temperature is solved.

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

a back plate;

the lamp strip is provided with a through hole;

the supporting device comprises a supporting column and a first step portion arranged at one end of the supporting column, wherein the first step portion deviates from one side of the supporting column and is fixedly connected to the back plate, the supporting column can penetrate through the through hole, the lamp strip is arranged on one side, facing the supporting column, of the first step portion, and a gap is formed between the lamp strip and the back plate.

Optionally, the supporting device further includes a second step portion, the second step portion is disposed on one side of the supporting pillar close to the first step portion, the first step portion and the second step portion are disposed at an interval, the second step portion can penetrate through the through hole, so that the light bar is disposed between the first step portion and the second step portion, and the second step portion can rotate relative to the light bar to limit the light bar.

Optionally, one side of the light bar, which faces the first step portion, and one side of the light bar, which faces the second step portion, are both abutted to the light bar.

Optionally, the supporting device further comprises heat-conducting silica gel, the heat-conducting silica gel is arranged on the first step portion and faces one side of the lamp strip and the second step portion and faces one side of the lamp strip.

Optionally, the supporting pillar, the first step portion and the second step portion are integrally formed.

Optionally, the number of through-holes is a plurality of, and is a plurality of the through-holes set up at intervals in the lamp strip, strutting arrangement's number is a plurality of, and is a plurality of strutting arrangement and a plurality of the through-hole one-to-one.

Optionally, the material of the supporting device is polycarbonate.

Optionally, the supporting device further includes a second step portion, the second step portion is disposed on one side of the supporting pillar close to the first step portion, the first step portion and the second step portion are disposed at an interval, and the second step portion can be clamped in the through hole to fix the light bar to the supporting device.

Optionally, the second step portion includes first lateral part and the second lateral part of adjacent setting, the length of first lateral part is longer than the length of second lateral part, the lamp strip correspond be provided with the first side that first lateral part length is close, and with the second side that second lateral part length is close, first side with the second side encloses to be located the through-hole, wherein, second step portion can be relative the lamp strip rotates, so that first lateral part corresponds the second side, just the second side corresponds first side.

In a second aspect, an embodiment of the present application further provides a display device, including the backlight module described in any one of the above embodiments.

The backlight module provided by the embodiment of the application comprises a back plate, a light bar and a supporting device; the lamp strip is provided with a through hole, the supporting device comprises a supporting column and a first step part arranged at one end of the supporting column, wherein the supporting column can penetrate through the through hole so as to arrange the lamp strip on one side of the first step part facing the supporting column, and meanwhile, one side of the first step part, which deviates from the supporting position, is fixedly connected to the back plate, so that the lamp strip is fixed to the back plate, and a gap can be formed between the back plate and the lamp strip, therefore, air in the backlight module can continuously enter the gap to dissipate heat of the lamp strip, and the situation that the back plate shakes to damage a circuit board on the lamp strip can be avoided in the process of transporting the backlight module; meanwhile, the support columns can also support the existing diffusion plate in the backlight module so as to avoid the situation that the diffusion plate in the prior art is directly pressed on the light bar to cause damage of the light bar or the heat dissipation effect of the light bar is poor due to space compression; in addition, the backlight unit that this embodiment provided can directly fix and support the lamp strip through strutting arrangement, always need adopt loaded down with trivial details lamp strip assembly step's problem when having solved installation lamp strip among the prior art to the assembly efficiency of production line has further been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

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

FIG. 2 isbase:Sub>A schematic cross-sectional view of the backlight module shown in FIG. 1 along the A-A direction.

Fig. 3 is an enlarged schematic structural diagram of a part a of the backlight module shown in fig. 2.

Fig. 4 is a schematic view of a first assembling structure of the supporting device and the light bar according to the embodiment of the present disclosure.

Fig. 5 is an enlarged structural view of a portion B of the mounting structure shown in fig. 4.

Fig. 6 is a schematic view of a second assembling structure of the supporting device and the light bar according to the embodiment of the present application.

Fig. 7 is an enlarged structural view of a portion C of the mounting structure shown in fig. 6.

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.

Based on the above problem, the embodiment of the application provides a backlight unit, can be applied to display device to solve current backlight unit and paste the lamp strip on the backplate, can become flexible gradually under the influence of temperature and even the problem that drops. Referring to fig. 1 to 3, fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A backlight module according to an embodiment of the present disclosure, fig. 2 isbase:Sub>A schematic sectional diagram of the backlight module shown in fig. 1 alongbase:Sub>A directionbase:Sub>A-base:Sub>A, and fig. 3 is an enlarged structural diagram ofbase:Sub>A portionbase:Sub>A of the backlight module shown in fig. 2.

The backlight module 100 includes a back plate 110, a light bar 120 and a supporting device 130; through-hole 121 has been seted up on lamp strip 120, strutting arrangement 130 includes support column 131 and sets up in the first step portion 132 of support column 131 one end, wherein, support column 131 can wear to locate through-hole 121, in order to set up lamp strip 120 in the one side of first step portion 132 towards support column 131, and simultaneously, with one side fixed connection that first step portion 132 deviates from support column 131 in backplate 110 again, thereby realized lamp strip 120's fixed, avoid lamp strip 120 the situation that drops to appear in backlight unit 100's motion process, in order to guarantee backlight unit 100's good display effect.

It can be understood that, in this embodiment, the first step portion 132 may be a block structure with a certain thickness, so that when the light bar 120 is disposed on one side of the first step portion 132 facing the supporting pillar 131, a certain gap (the gap is the thickness of the first step portion 132) can be formed between the back plate 110 and the light bar 120, so that when the light bar 120 emits light, air inside the backlight module 100 can continuously enter the gap between the back plate 110 and the light bar 120, and gradually take away heat generated by the light bar 120 when the light bar 120 emits light, so as to achieve a heat dissipation effect on the light bar 120, thereby ensuring a display effect of the light bar 120, and solve the problem that in the prior art, the adhesion force of a tape adhering the light bar can be reduced under the influence of temperature due to the heat generated when the light bar emits light, and the light bar gradually loosens or even falls off, so that the stable connection of the light bar on the back plate cannot be achieved; meanwhile, in the embodiment, the back plate 110 and the light bar 120 are arranged at intervals, so that in the process of transporting the backlight module 100, the situation that the back plate 110 shakes or vibrates to cause the back plate 110 to contact the light bar 120 and the light bar 120 to vibrate or bend, and the circuit board of the light bar 120 is damaged can be avoided.

In addition, the supporting posts 131 in this embodiment can also support the existing diffuser plate 140 in the backlight module 100, so as to avoid the situation that the lamp bar is damaged due to the diffuser plate in the prior art being directly pressed on the lamp bar, or the heat dissipation effect of the lamp bar is not good due to the compression of the internal space of the backlight module; in addition, the backlight module 100 provided by the embodiment can directly fix and support the light bar 120 through the supporting device 130, and also solves the problem that a complicated assembling step is always required to be adopted when the light bar is installed in the prior art, thereby further improving the assembling efficiency of the production line.

It can be understood that, in the embodiment, the fixed connection manner of the first step portion 132 and the back plate 110 is not limited, for example, the fixed connection manner may be a non-detachable manner such as welding, adhering, and the like, so as to achieve a firmer fixing effect on the light bar 120, and avoid the light bar 120 from loosening or falling off when the backlight module 100 works; meanwhile, the first step portion 132 and the back plate 110 may be detachably fixed, such as by a snap connection, a screw connection, or a magnetic connection, so that when the backlight module 100 needs to be reworked or repaired, the light bar 120 and the supporting device 130 can be easily detached in a detachable manner.

Optionally, the supporting device 130 may further include a second step portion 133. For example, please refer to fig. 4 and fig. 5, wherein fig. 4 is a schematic view of a first assembly structure of a supporting device and a light bar provided in an embodiment of the present application, and fig. 5 is an enlarged structural view of a part B of the assembly structure shown in fig. 4.

In this embodiment, the second step portion 133 is disposed on one side of the supporting pillar 131 close to the first step portion 132, and the first step portion 132 and the second step portion 133 are disposed at an interval, and meanwhile, the second step portion 133 can be rotatably disposed relative to the light bar 120. As shown in fig. 5, in this embodiment, the second step portion 133 and the through hole 121 may be rectangles with matching shapes and sizes, when the second step portion 133 is inserted into the through hole 121, the rectangular surface of the second step portion 133 passing through the through hole 121 may correspond to the through hole 121, so that the second step portion 133 may be inserted into the through hole 121, and the light bar 120 is located between the first step portion 132 and the second step portion 133, because the second step portion 133 may be rotatably disposed relative to the light bar 120, at this time, the second step portion 133 is rotated 90 degrees relative to the light bar 120, so that the second step portion 133 may no longer pass through the through hole 121 (that is, when the second step portion 133 is inserted into the through hole 121, the rectangular surface of the second step portion 133 passing through the through hole 121 may correspond to the through hole 121, and after the second step portion 133 is rotated, the long side of the rectangular surface of the second step portion 133 corresponds to the short side of the through hole 121), thereby achieving a limiting effect on the up-down direction of the light bar 120, so as to avoid a situation that the light bar 120 slides off from the support column 131 during transportation of the backlight module 100. It can be understood that, in this embodiment, the second step portion 133 and the through hole 121 may also be in other corresponding shapes, such as a triangle or a parallelogram that do not overlap after rotating 90 degrees, as long as the rotation can be achieved and the light bar 120 can not pass through, and the effect of limiting the light bar can be achieved.

It should be noted that the second step portion 133 in this embodiment can be rotatably connected to the supporting pillar 131, so that the second step portion 133 can be independently rotated, and the light bar 120 can be more conveniently mounted or dismounted (the whole supporting device 130 does not need to be rotated); the second step portion 133 may also be a support structure integrally formed with the support column 131 and the first step portion 132, so as to further enhance the rigidity of the second step portion 133.

When support column 131, first step portion 132 and second step portion 133 integrated into one piece, wear to locate through-hole 121 with support column 131 and second step portion 133 earlier, make lamp strip 120 be located between first step portion 132 and second step portion 133, rotate whole strutting arrangement 130 for lamp strip 120 90 degrees again, thereby make second step portion 133 unable rethread through-hole 121, with the spacing effect of realization to lamp strip 120 upper and lower direction, at last with first step portion 132 fixed connection in backplate 110 again, with the realization fixed to lamp strip 120.

Optionally, as shown in fig. 3, both the side of the first stepped portion 132 facing the light bar 120 and the side of the second stepped portion 133 facing the light bar 120 may be abutted against the light bar 120, that is, the thickness of the light bar 120 in the direction of gravity is greater than or equal to the side of the first stepped portion 132 facing the light bar 120 and the side of the second stepped portion 133 facing the light bar 120, so that when the light bar 120 is disposed between the first stepped portion 132 and the second stepped portion 133, both the side of the first stepped portion 132 facing the light bar 120 and the side of the second stepped portion 133 facing the light bar 120 may be in interference fit with the light bar 120, so as to achieve a better fixing effect on the light bar 120; meanwhile, the first step portion 132 and the second step portion 133 towards one side of the light bar 120 can be respectively provided with heat-conducting silica gel (not shown), and the heat-conducting silica gel can also abut against the light bar 120, in this embodiment, by setting up the heat-conducting silica gel, not only can the further heat dissipation effect of the light bar 120 be realized, but also the appearance surface of the light bar 120 can be abutted by the flexible material of silica gel, thereby avoiding the damage of the circuit board on the light bar 120 in the abutting process, and simultaneously, because of the anti-slip characteristic of the silica gel material, the heat-conducting silica gel in this embodiment can also play the basic limiting effect on the light bar 120.

It should be noted that, in the present embodiment, the number of the through holes 121 and the number of the supporting devices 130 may be multiple, the through holes 121 are spaced and uniformly disposed on the light bar 120, and the supporting devices 130 may correspond to the through holes 121 one by one, so that the supporting effect of the first step portions 132 on the light bar 120 is better, and the situation of uneven light emission caused by the light bar 120 inclining to the back plate 110 due to uneven supporting force is avoided; meanwhile, the plurality of support columns 131 can also play a more excellent supporting effect on the diffusion plate 140, so that the problem that the diffusion plate 140 collapses to cause damage to the light bar 120 is solved.

Optionally, referring to fig. 6 and fig. 7, fig. 6 is a schematic view of a second assembly structure of the support device and the light bar provided in the embodiment of the present application, and fig. 7 is an enlarged structural view of a part C of the assembly structure shown in fig. 6.

In another embodiment, the second step 133 may include a first side 1331 and a second side 1332 that are adjacently disposed, where the length of the first side 1331 is longer than that of the second side 1332, and at the same time, the light bar 120 is correspondingly provided with a first side 122 and a second side 123, the first side 122 and the second side 123 are adjacently disposed, the length of the first side 122 is similar to that of the first side 1331, and the length of the second side 123 is similar to that of the second side 1332. It can be understood that, the light bar 120 in the present embodiment may have two sets of the first side edge 122 and the second side edge 123, and the two sets of the first side edge 122 and the second side edge 123 are disposed around the through hole 121 to form a space for the support pillar 131 to pass through and the second step portion 133 to be clamped.

As shown in fig. 7, in another embodiment, after the supporting pillar 131 is inserted into the through hole 121 and before the second step portion 133 passes through the through hole 121, two situations may occur at this time, the first situation is that the length of the first side portion 1331 of the second step portion 133 is greater than or equal to the first side edge 122, and the length of the second side portion 1332 of the second step portion 133 is also greater than or equal to the first side edge 122, and at this time, the second step portion 133 can be just clamped at the through hole 121 when passing through the through hole 121, so as to fix the light bar 120; in the second case, the length of the first side portion 1331 of the second stepped portion 133 may be slightly smaller than the first side edge 122 (but still larger than the second side edge 123), and the length of the second side portion 1332 of the second stepped portion 133 is also slightly smaller than the second side edge 123, and at this time, the second stepped portion 133 cannot be necessarily clamped at the through hole 121 when passing through the through hole 121, so as to fix the light bar 120. In order to solve the problem, when the second condition occurs in the embodiment, and the second step portion 133 is located at the through hole 121, the second step portion 133 is rotated by 90 degrees relative to the light bar 120, so that the first side portion 1331 corresponds to the second side edge 123, and the second side portion 1332 corresponds to the first side edge 122, thereby achieving the purpose that the second step portion 133 is clamped in the through hole 121 to fix the light bar 120.

In another embodiment of the present application, when the second step portion 133 is clamped in the through hole 121 to fix the light bar 120, the gap between the light bar 120 and the back plate 110 is larger, so that when the light bar 120 emits light, more air inside the backlight module 100 can enter the gap between the back plate 110 and the light bar 120, and gradually take away the heat of the light bar 120 itself when the light bar 120 emits light, in order to increase the cooling air volume, thereby achieving the heat dissipation effect of the light bar 120, ensuring the display effect of the light bar 120, and solving the problem that in the prior art, the heat during light emission of the light bar can cause the adhesive force of the adhesive tape for adhering the light bar to be reduced under the influence of temperature, and cause the light bar to gradually loosen or even fall off, thereby failing to achieve the stable connection on the back plate of the light bar.

It is understood that the second step portion 133 in another embodiment can also be rotatably connected to the supporting pillar 131, so that the second step portion 133 can be rotated independently, and the light bar 120 can be mounted or dismounted more conveniently (without rotating the whole supporting device 130); the second step portion 133 may also be a support structure integrally formed with the support column 131 and the first step portion 132, so as to further enhance the rigidity of the second step portion 133. Meanwhile, the supporting device 130 may be made of a plastic material with high strength and high plasticity, such as polycarbonate, and when the second step portion 133 is clamped in the through hole 121 to fix the light bar 120, the second step portion 133 made of the polycarbonate material may also prevent scratching or damaging the appearance surface of the light bar 120.

The backlight module provided by the embodiment of the application comprises a back plate, a light bar and a supporting device; the lamp strip is provided with a through hole, the supporting device comprises a supporting column and a first step part arranged at one end of the supporting column, wherein the supporting column can penetrate through the through hole so as to arrange the lamp strip on one side of the first step part facing the supporting column, and meanwhile, one side of the first step part deviating from the supporting position is fixedly connected to the back plate, so that the lamp strip is fixed on the back plate, and a gap can be formed between the back plate and the lamp strip, so that air in the backlight module can continuously enter the gap to dissipate heat of the lamp strip, and the back plate is prevented from shaking to damage a circuit board on the lamp strip in the process of transporting the backlight module; meanwhile, the support columns can also support the existing diffusion plate in the backlight module so as to avoid the situation that the diffusion plate in the prior art is directly pressed on the light bar to cause damage of the light bar or the heat dissipation effect of the light bar is poor due to space compression; in addition, the backlight unit that this embodiment provided can directly fix and support the lamp strip through strutting arrangement, always need adopt loaded down with trivial details lamp strip assembly step's problem when having solved installation lamp strip among the prior art to the assembly efficiency of production line has further been improved.

An embodiment of the present invention further provides a display device including the backlight module.

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.

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

The display device and the backlight module 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 above 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

1. A backlight module (100), comprising:

a back plate (110);

the lamp strip (120) is provided with a through hole (121);

the supporting device (130) comprises a supporting column (131) and a first step portion (132) arranged at one end of the supporting column (131), one side, deviating from the supporting column (131), of the first step portion (132) is fixedly connected to the back plate (110), wherein the supporting column (131) can penetrate through the through hole (121) so as to arrange the light bar (120) at one side, facing the supporting column (131), of the first step portion (132) and enable a gap to be reserved between the light bar (120) and the back plate (110).

2. The backlight module (100) according to claim 1, wherein the supporting device (130) further comprises a second step portion (133), the second step portion (133) is disposed on a side of the supporting pillar (131) close to the first step portion (132), the first step portion (132) and the second step portion (133) are spaced apart, the second step portion (133) can be inserted into the through hole (121) so that the light bar (120) is disposed between the first step portion (132) and the second step portion (133), and the second step portion (133) can rotate relative to the light bar (120) to limit the light bar (120).

3. The backlight module (100) according to claim 2, wherein the first step portion (132) and the second step portion (133) are disposed in abutment with the light bar (120) on both sides of the light bar (120).

4. The backlight module (100) according to claim 2, wherein the supporting device (130) further comprises a heat conductive silicone, and the heat conductive silicone is disposed on a side of the first step portion (132) facing the light bar (120) and a side of the second step portion (133) facing the light bar (120).

5. The backlight module (100) according to claim 2, wherein the supporting posts (131), the first step portion (132) and the second step portion (133) are integrally formed.

6. The backlight module (100) of claim 1, wherein the number of the through holes (121) is plural, the plural through holes (121) are disposed on the light bar (120) at intervals, the number of the supporting devices (130) is plural, and the plural supporting devices (130) and the plural through holes (121) are in one-to-one correspondence.

7. The backlight module (100) according to claim 1, wherein the material of the supporting device (130) is polycarbonate.

8. The backlight module (100) according to claim 1, wherein the supporting device (130) further comprises a second step portion (133), the second step portion (133) is disposed on a side of the supporting pillar (131) close to the first step portion (132), the first step portion (132) and the second step portion (133) are disposed at an interval, and the second step portion (133) can be clamped in the through hole (121) to fix the light bar (120) to the supporting device (130).

9. The backlight module (100) according to claim 8, wherein the second step portion (133) includes a first side portion (1331) and a second side portion (1332) which are adjacently disposed, a length of the first side portion (1331) is longer than a length of the second side portion (1332), the light bar (120) is correspondingly provided with a first side edge (122) which is similar to the length of the first side portion (1331), and a second side edge (123) which is similar to the length of the second side portion (1332), the first side edge (122) and the second side edge (123) surround the through hole (121), wherein the second step portion (133) can rotate relative to the light bar (120) to enable the first side portion (1331) to correspond to the second side edge (123), and the second side portion (1332) to correspond to the first side edge (122).

10. A display device comprising a backlight module (100) according to any one of claims 1 to 9.