CN217386070U

CN217386070U - Backlight module, liquid crystal module and display device

Info

Publication number: CN217386070U
Application number: CN202221420477.1U
Authority: CN
Inventors: 刘静; 朱杉婷
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-09-06
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a backlight module, a liquid crystal module and a display device, wherein the backlight module comprises a shell, a light-emitting component and a light guide plate, a diffusion plate is arranged in the shell, an installation cavity is enclosed between one side of the diffusion plate and the shell, an accommodating cavity is enclosed between the other side of the diffusion plate and the shell, and the accommodating cavity is provided with a light outlet; the light-emitting assembly comprises a lamp plate and a plurality of LED lamps, the lamp plate is surrounded into a mounting groove with a notch facing the diffusion plate, and the LED lamps are arranged in the mounting cavity and are arranged on the bottom groove wall of the mounting groove at intervals; the light guide plate is arranged in the accommodating cavity, the light inlet side of the light guide plate is arranged corresponding to the diffusion plate, and the light outlet side of the light guide plate is arranged corresponding to the light outlet. Backlight unit is through setting up the diffuser plate between LED lamp and light guide plate so that the pointolite diffusion that the diffuser plate sent the LED lamp is even area source, has improved the light-emitting homogeneity to through installing the LED lamp on the bottom cell wall, so that the lamp plate can be with LED lamp to the light reflection back diffuser plate department of dispersing all around, improved light utilization ratio.

Description

Backlight module, liquid crystal module and display device

Technical Field

The utility model relates to a backlight unit technical field, in particular to backlight unit, liquid crystal module and display device.

Background

With the rapid development of liquid crystal display technology, users have increasingly demanded display devices, which not only have high brightness, high color gamut and good image quality display effect, but also have increasingly demanded appearance design of display devices, and therefore, in recent years, the display devices are gradually becoming thinner and lighter.

The lateral-entering backlight module effectively reduces the thickness of the backlight module due to the characteristic that the light emitting source is arranged on the side edge, so that the display device provided with the lateral-entering backlight module is lighter and thinner, however, a certain distance is reserved between the light emitting source and the light guide plate in the lateral-entering backlight module, part of light emitted by the light emitting source is emitted to the periphery before the light guide plate is incident, the light energy utilization rate is low, and the light emitting source is positioned on one side of the light guide plate, so that the brightness of one side, close to the light emitting source, of the light guide plate is higher than the brightness of one side, away from the light emitting source, and the light emitting uniformity is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a backlight unit, LCD module and display device, aim at solving the low and inhomogeneous problem of light-emitting of side income formula backlight unit light utilization ratio.

In order to achieve the above object, the utility model provides a backlight module, backlight module includes:

the LED lamp comprises a shell, wherein a diffusion plate is arranged in the shell, an installation cavity is defined between one side of the diffusion plate and the shell, an accommodating cavity is defined between the other side of the diffusion plate and the shell, and the accommodating cavity is provided with a light outlet;

the light-emitting assembly comprises a lamp panel and a plurality of LED lamps, the lamp panel is encircled into an installation groove with a groove opening facing the diffusion plate, the installation groove is provided with a bottom groove wall, and the LED lamps are arranged in the installation cavity and are arranged on the bottom groove wall at intervals;

the light guide plate is arranged in the accommodating cavity, the light inlet side of the light guide plate corresponds to the diffusion plate, and the light outlet side of the light guide plate corresponds to the light outlet.

Optionally, the light emitting assembly further includes a plurality of lenses disposed in the mounting cavity, the number of the lenses is equal to the number of the LED lamps, and each lens cover is disposed outside the LED lamp disposed corresponding to the lens cover.

Optionally, a plurality of light homogenizing areas are formed on the diffusion plate, the number of the light homogenizing areas is consistent with the number of the LED lamps and is arranged in a one-to-one correspondence manner, and a plurality of light homogenizing points arranged in an array are arranged in each light homogenizing area.

Optionally, the housing includes a back plate and a middle frame, the back plate includes a bottom plate and a side plate, the side plate is surrounded on the periphery of the bottom plate, the middle frame and the bottom plate are arranged at intervals and connected through the side plate, and the middle frame is provided with the light outlet; the mounting groove is provided with a first side groove wall and a second side groove wall which are oppositely arranged, the first side groove wall and the second side groove wall are respectively arranged at two ends of the bottom groove wall, the first side groove wall, the bottom groove wall and the second side groove wall are respectively abutted against the middle frame, the side plate and the bottom plate, one end of the diffusion plate is connected with the middle frame, and the other end of the diffusion plate is connected with the second side groove wall.

Optionally, a first clamping groove is formed in the middle frame, a second clamping groove is formed in the second side groove wall at a position corresponding to the first clamping groove, one end of the diffusion plate is clamped in the first clamping groove, and the other end of the diffusion plate is clamped in the second clamping groove;

and/or a first limiting boss is formed on the middle frame, the first limiting boss is formed by sinking towards the direction close to the diffusion plate, and the position of the first side groove wall corresponding to the first limiting boss sinks towards the direction far away from the diffusion plate to form a first limiting step matched with the first limiting boss;

and/or a second limiting boss is formed on the middle frame, the second limiting boss is formed in a concave mode in the direction far away from the bottom plate, and a position, corresponding to the second limiting boss, of the side plate is formed in a concave mode in the direction close to the bottom plate and is matched with a second limiting step of the second limiting boss.

Optionally, an inner surface of the mounting groove is coated with white ink to form a reflective layer.

Optionally, a reflecting sheet is stacked on one side of the light guide plate, which is away from the light exit, and a diffusion sheet and an optical film group are stacked on the light exit side of the light guide plate.

The utility model discloses still provide a liquid crystal module, liquid crystal module include liquid crystal display panel and as above backlight unit, the liquid crystal display panel lid is located light-emitting port department and with the casing butt.

Optionally, a mounting table is formed on the housing, the mounting table is recessed towards a direction close to the accommodating cavity, and the liquid crystal display panel is mounted on the mounting table.

The utility model discloses still provide a display device, display device includes as above the liquid crystal module.

In the backlight module of the utility model, a plurality of LED lamps arranged on the wall of the bottom groove at intervals are used for emitting light, one part of the light emitted by the LED lamps is directly irradiated to the diffusion plate, the other part of the light is diffused to the inner surface of the lamp plate all around, and the lamp plate is used for reflecting the light irradiated to the lamp plate to the diffusion plate so as to improve the light utilization rate and effectively avoid the light to escape all around; the diffusion plate is used for diffusing the light irradiated to the diffusion plate so that the light incident to the light guide plate has good uniformity, and the light outlet side of the light guide plate emits uniform light to the light outlet. Backlight unit mixes the light distance in order to form short ground through setting up the diffuser plate between LED lamp and light guide plate to the pointolite diffusion that the diffuser plate sent the LED lamp is even area source, has effectively improved the light-emitting homogeneity, and through installing the LED lamp on the bottom cell wall of mounting groove, so that the lamp plate can reflect the light that the LED lamp was dispersed all around back to diffuser plate department, has improved light utilization ratio.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a liquid crystal module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;

fig. 3 is a schematic view of an assembly structure of a housing, a diffusion plate and a lamp panel in a backlight module according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a light emitting element in a backlight module according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a diffuser plate in a backlight module according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Backlight module	211	Uniform light spot
10	Shell body	30	Light emitting assembly
				11	Mounting cavity	31	Lamp panel
12	Containing cavity	311	Mounting groove
				121	Light outlet	312	Wall of bottom groove
13	Back plate	313	First side groove wall
				131	Base plate	3131	First limit step
1311	Groove	314	Second side groove wall
				132	Side plate	3141	Second card slot
1321	Second limit step	315	Reflective layer
				14	Middle frame	32	LED lamp
141	First card slot	33	Lens and its manufacturing method
				142	First limit boss	40	Light guide plate
143	Second limit boss	41	Reflector plate
				144	Mounting table	42	Diffusion sheet
145	Third limit boss	43	Optical film group
				20	Diffusion plate	200	Liquid crystal module
21	Even light zone	201	Liquid crystal display panel

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present invention is described in the directions of "up", "down", "front", "back", "left", "right", etc. with reference to the directions shown in fig. 1 to 5, and is only used to explain the relative positional relationship between the respective components in the postures shown in fig. 1 to 5, and if the specific posture is changed, the directional indication is correspondingly changed accordingly.

The utility model provides a backlight module.

A backlight module 100 of the present embodiment, the backlight module 100 includes a housing 10, a light emitting assembly 30 and a light guide plate 40, a diffusion plate 20 is disposed in the housing 10, a mounting cavity 11 is defined between one side of the diffusion plate 20 and the housing 10, a receiving cavity 12 is defined between the other side of the diffusion plate 20 and the housing 10, and the receiving cavity 12 has a light outlet 121; the light emitting assembly 30 includes a lamp panel 31 and a plurality of LED lamps 32, the lamp panel 31 encloses a mounting groove 311 with a slot facing the diffuser plate 20, the mounting groove 311 has a bottom groove wall 312, and the plurality of LED lamps 32 are disposed in the mounting cavity 11 and are arranged on the bottom groove wall 312 at intervals; the light guide plate 40 is installed in the accommodating cavity 12, the light incident side of the light guide plate 40 is disposed corresponding to the diffusion plate 20, and the light emergent side of the light guide plate 40 is disposed corresponding to the light outlet 121.

As shown in fig. 1 to 4, the diffusion plate 20 is installed at a position near one side in the casing 10 to divide the inside of the casing 10 into an installation cavity 11 and an accommodation cavity 12, and a light outlet 121 communicated with the accommodation cavity 12 is formed on the casing 10 corresponding to the accommodation cavity 12; the lamp panel 31 is bent and surrounded to form a mounting groove 311, one side of the lamp panel 31, which is far away from the mounting groove 311, is abutted to the housing 10, that is, the outer surface of the mounting groove 311 is abutted to the housing 10, and the bottom groove wall 312 of the mounting groove 311 is arranged in the mounting cavity 11 and is arranged at intervals with the diffusion plate 20, so that the notch of the mounting groove 311 is arranged corresponding to the diffusion plate 20, the plurality of LED lamps 32 are arranged at intervals on the bottom groove wall 312 along the extending direction of the mounting groove 311 and are arranged corresponding to the diffusion plate 20, so that the lamp panel 31 is surrounded on the periphery of the plurality of LED lamps 32, and the LED lamps 32 emit light towards the direction of the diffusion plate 20; the light guide plate 40 is disposed in the accommodating cavity 12, and a side of the light guide plate 40 close to the diffusion plate 20 is a light incident side, and a side of the light guide plate 40 close to the light outlet 121 is a light emitting side.

In the backlight module 100 of this embodiment, the plurality of LED lamps 32 arranged on the bottom groove wall 312 at intervals are used for emitting light, a part of the light emitted by the LED lamps 32 is directly emitted to the diffusion plate 20, another part of the light is dispersed all around to the inner surface of the lamp panel 31, and the lamp panel 31 is used for reflecting the light irradiated to the lamp panel 31 to the diffusion plate 20, so as to improve the light utilization rate and effectively avoid the light from being dissipated all around; the diffusion plate 20 is used for diffusing the light irradiated to the diffusion plate 20 to make the light incident to the light guide plate 40 have good uniformity, so that the light outlet side of the light guide plate 40 emits uniform light to the light outlet 121. Backlight unit 100 is through setting up diffuser plate 20 between LED lamp 32 and light guide plate 40 in order to form short mixed light distance (OD, optical distance), so that diffuser plate 20 spreads the pointolite that LED lamp 32 sent for even area source, effectively improved the light-emitting homogeneity, and through installing LED lamp 32 on the bottom slot wall 312 of mounting groove 311, so that lamp plate 31 can be with LED lamp 32 to the light reflection back diffuser plate 20 department of dispersing all around, light utilization is improved.

In this embodiment, the light emitting assembly 30 further includes a plurality of lenses 33 disposed in the mounting cavity 11, the number of the lenses 33 is equal to the number of the LED lamps 32, and each lens 33 covers the LED lamp 32 disposed correspondingly. As shown in fig. 2 and 4, the lamp panel 31 is an integrally formed product, the lamp panel 31 is recessed in a direction away from the diffuser plate 20 to form a mounting groove 311 for mounting the plurality of LED lamps 32, the plurality of LED lamps 32 are arranged on the bottom groove wall 312 of the mounting groove 311 at intervals along the extending direction of the lamp panel 31, and a lens 33 is covered outside each LED lamp 32; light emitting component 30 is through establishing lens 33 at LED lamp 32 dustcoat so that the pointolite refraction that lens 33 sent LED lamp 32 is the area source, and lamp plate 31 through integrated into one piece encloses a plurality of LED lamps 32 and locates in mounting groove 311, the lamp plate 31 light leak has not only been avoided, and can make the LED lamp 32 that quantity is less send the even light of luminance through lens 33 and lamp plate 31 cooperation, single LED lamp 32's light energy utilization ratio has been improved, namely, the distance between two LED lamps 32 is great, the quantity of LED lamp 32 has effectively been reduced, the cost is reduced, the heat dissipation of a plurality of LED lamps 32 of being convenient for again, the light decay of LED lamp 32 has been slowed down, the color decay, the life of LED lamp 32 has been prolonged.

In addition, lamp plate 31 can adopt the aluminium material finished piece among the prior art, and lamp plate 31 is integrated into one piece's aluminium finished piece promptly, not only easily makes, has the advantage of saving the assembly step and omitting assembly error, and the heat that the during operation produced of LED lamp 32 can be absorbed fast to the lamp plate 31 of aluminium finished piece moreover, has further improved light-emitting component 30's radiating effect.

In this embodiment, the diffusion plate 20 is formed with a plurality of light uniformizing regions 21, the number of the light uniformizing regions 21 is the same as the number of the LED lamps 32, and the light uniformizing regions 21 are provided with a plurality of light uniformizing points 211 arranged in an array. As shown in fig. 5, the diffuser plate 20 is provided with a light homogenizing zone 21 at a position corresponding to each LED lamp 32, and a plurality of light homogenizing points 211 are arranged in the light homogenizing zone 21; when the light that sends when LED lamp 32 shines diffuser plate 20 department, diffuser plate 20 is used for diffusing light, even light point 211 is used for the highlight to even light zone 21 department of will penetrating directly to evenly reflect all around, and then weakens the luminance in even light zone 21, plays further even light's effect for light obtains the surface light source that the homogeneity is better after diffuser plate 20, and then makes backlight unit 100 light-emitting even, and there is not bright limit, lamp shadow and dark space scheduling problem. In a preferred embodiment, white ink is silk-screened in a dot-like manner on the diffuser plate 20 at a position corresponding to the light homogenizing areas 21 by a silk-screen printing method in the prior art, and a plurality of white ink light homogenizing points 211 are silk-screened in each light homogenizing area 21 on the diffuser plate 20 to achieve the function of uniformly reflecting strong light.

In the backlight module 100 of the present embodiment, the housing 10 includes a back plate 13 and a middle frame 14, the back plate 13 includes a bottom plate 131 and a side plate 132, the side plate 132 surrounds the periphery of the bottom plate 131, the middle frame 14 and the bottom plate 131 are arranged at an interval and connected through the side plate 132, and the middle frame 14 is provided with a light outlet 121; the mounting groove 311 has a first side groove wall 313 and a second side groove wall 314 disposed opposite to each other, the first side groove wall 313 and the second side groove wall 314 are disposed at two ends of the bottom groove wall 312 respectively, the first side groove wall 313, the bottom groove wall 312 and the second side groove wall 314 are abutted against the middle frame 14, the side plate 132 and the bottom plate 131 respectively, one end of the diffusion plate 20 is connected to the middle frame 14, and the other end of the diffusion plate 20 is connected to the second side groove wall 314.

As shown in fig. 1 to 4, the side plate 132 extends along the periphery of the bottom plate 131 and is connected to the bottom plate 131, the middle frame 14 is installed at one end of the side plate 132 far from the bottom plate 131, the diffusion plate 20 is connected between the middle frame 14 and the bottom plate 131, and the diffusion plate 20 and the side plate 132 are arranged at an interval so that an installation cavity 11 for installing a plurality of LED lamps 32 is formed at one side of the diffusion plate 20, an accommodation cavity 12 for installing the light guide plate 40 is formed at the other side of the diffusion plate 20, and a light outlet 121 communicated with the accommodation cavity 12 is formed at a position on the middle frame 14 corresponding to the accommodation cavity 12; the lamp plate 31 is provided with and is formed with mounting groove 311 that is used for installing LED lamp 32 by buckling, lamp plate 31 has end slot wall 312 and connects respectively in first side cell wall 313 and second side cell wall 314 at end slot wall 312 both ends, and second side cell wall 314 extends and stretches out outside installation cavity 11 from end slot wall 312 to diffuser plate 20's direction, a plurality of LED interval arrangement are on end slot wall 312 and correspond the diffuser plate 20 setting, not only have structural design rationally, simple to operate is swift advantage, and light guide plate 40 presss from both sides and locates between center 14 and bottom plate 131, so that light guide plate 40 is stably fixed in holding chamber 12, light guide plate 40 extrusion lamp plate 31 has effectively been prevented, the stability of structure has been improved.

In this embodiment, the middle frame 14 is provided with a first engaging groove 141, the second side wall 314 is provided with a second engaging groove 3141 at a position corresponding to the first engaging groove 141, one end of the diffuser plate 20 is engaged with the first engaging groove 141, and the other end of the diffuser plate 20 is engaged with the second engaging groove 3141; as shown in fig. 3, a first engaging groove 141 is formed on one side of the middle frame 14 facing the installation cavity 11, a second engaging groove 3141 is formed on one side of the second sidewall 314 of the lamp panel 31 facing the installation cavity 11, two ends of the diffuser plate 20 respectively extend into the first engaging groove 141 and the second engaging groove 3141, the first engaging groove 141 and the second engaging groove 3141 play a role in positioning and installing the diffuser plate 20, and the structure is stable and reliable; moreover, the diffusion plate 20 and the groove wall of the first slot 141 can be bonded by adhesive glue, which facilitates the installation of the diffusion plate 20.

In the backlight module 100 of the present embodiment, the middle frame 14 is formed with a first limiting protrusion 142, the first limiting protrusion 142 is formed by recessing toward the direction close to the diffuser plate 20, the first side groove wall 313 is formed by recessing toward the direction away from the diffuser plate 20 corresponding to the position of the first limiting protrusion 142 to form a first limiting step 3131 engaged with the first limiting protrusion 142; furthermore, a groove 1311 is formed on the bottom plate 131, and the second sidewall 314 is installed in the groove 1311. As shown in fig. 3, the first limiting step 3131 is used for abutting and matching with the first limiting boss 142 to play a role of limiting the first side groove wall 313, and the second side groove wall 314 abuts against the groove wall of the groove 1311 to play a role of limiting the second side groove wall 314, so that the positioning and installation of the lamp panel 31 are realized, and the stability of the structure is improved.

In this embodiment, the middle frame 14 is formed with a second limiting protrusion 143, the second limiting protrusion 143 is formed by recessing in a direction away from the bottom plate 131, and the side plate 132 is formed by recessing in a direction close to the bottom plate 131 at a position corresponding to the second limiting protrusion 143 to form a second limiting step 1321 engaged with the second limiting protrusion 143. As shown in fig. 3, the second limiting step 1321 is used for abutting and matching with the second limiting boss 143 to play a role in positioning and installing the middle frame 14, and has an advantage of being convenient to install; moreover, in a preferred embodiment, the middle frame 14 may be made of an aluminum material in the prior art, and the middle frame 14 made of the aluminum material is convenient for absorbing heat generated by the lamp panel 31, so that the heat dissipation performance is further improved.

In the backlight module 100 of the present embodiment, the inner surface of the mounting groove 311 is coated with white ink to form the reflective layer 315. As shown in fig. 1 to 4, the lamp plate 31 is coated with a white ink layer towards one side of the LED lamp 32, namely, the bottom groove wall 312, the first side groove wall 313 and the second side groove wall 314 are coated with a white ink layer towards one side of the installation cavity 11, the white ink has good light reflection performance, a reflecting layer 315 is formed by coating the white ink on the lamp plate 31, so that when light emitted by the LED lamp 32 irradiates to the lamp plate 31, the reflecting layer 315 can reflect the light for multiple times, and further the light uniformity irradiating to the diffusion plate 20 is higher, so that the light is effectively prevented from escaping, the light utilization rate is further improved, the processing technology of the lamp plate 31 is simplified, and the process cost is reduced.

In this embodiment, the light guide plate 40 is stacked with the reflective sheet 41 on a side away from the light exit 121, and the light exit side of the light guide plate 40 is stacked with the diffusion sheet 42 and the optical film set 43. As shown in fig. 2, the reflective sheet 41 is sandwiched between the bottom plate 131 and the light guide plate 40, and the reflective sheet 41 is used for reflecting the light emitted from the light guide plate 40 to the light outlet 121, so as to further improve the light utilization rate and the light emitting brightness; furthermore, a third limiting boss 145 is formed on the middle frame 14, the third limiting boss 145 is disposed in the accommodating cavity 12 and is formed by being recessed in a direction away from the bottom plate 131, so that the stacked diffusion sheet 42 and the optical film group 43 are sandwiched between the light guide plate 40 and the third limiting boss 145, the diffusion sheet 42 and the optical film group 43 play a role in improving the light emitting efficiency, the third limiting boss 145 plays a role in positioning and mounting the diffusion sheet 42 and the optical film group 43, and in addition, a buffering foam can be arranged between the optical film group 43 and the third limiting boss 145 to play a role in protecting the optical film group 43.

The utility model also provides a liquid crystal module 200, liquid crystal module 200 includes liquid crystal display panel 201 and as above backlight unit 100, liquid crystal display panel 201 covers and locates light-emitting port 121 department and with the butt of casing 10, as shown in fig. 1 to 3, light-emitting port 121 has been seted up on middle frame 14 of backlight unit 100, liquid crystal display panel 201 covers and locates on middle frame 14 and corresponds light-emitting port 121 and sets up, so that backlight unit 100 can shine to liquid crystal display panel 201 from the area light source that light-emitting port 121 goes out; in addition, the specific structure of the backlight module 100 refers to the above embodiments, and since the liquid crystal module 200 adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

Further, a mounting table 144 is formed on the housing 10, the mounting table 144 is recessed toward the accommodating chamber 12, and the liquid crystal display panel 201 is mounted on the mounting table 144. As shown in fig. 1 to fig. 3, an installation platform 144 for installing the liquid crystal display panel 201 is formed on a side of the middle frame 14 away from the bottom plate 131, and the installation platform 144 plays a role of supporting the liquid crystal display panel 201, thereby improving structural stability.

The utility model discloses still provide a display device, display device include as above liquid crystal module 200, this liquid crystal module 200's concrete structure refers to above-mentioned embodiment, because display device has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

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

a diffusion plate is arranged in the shell, an installation cavity is defined between one side of the diffusion plate and the shell, an accommodating cavity is defined between the other side of the diffusion plate and the shell, and the accommodating cavity is provided with a light outlet;

2. The backlight module as claimed in claim 1, wherein the light emitting assembly further comprises a plurality of lenses disposed in the mounting cavity, the number of the lenses is equal to the number of the LED lamps, and each lens cover is disposed outside the LED lamp corresponding to the lens cover.

3. The backlight module as claimed in claim 1, wherein the diffuser plate has a plurality of light homogenizing zones formed thereon, the number of the light homogenizing zones is identical to the number of the LED lamps and is arranged in a one-to-one correspondence, and a plurality of light homogenizing points arranged in an array are provided in each of the light homogenizing zones.

4. The backlight module as claimed in claim 1, wherein the housing comprises a back plate and a middle frame, the back plate comprises a bottom plate and a side plate, the side plate is disposed around the bottom plate, the middle frame is spaced from the bottom plate and connected to the bottom plate via the side plate, and the middle frame is provided with the light outlet; the mounting groove is provided with a first side groove wall and a second side groove wall which are oppositely arranged, the first side groove wall and the second side groove wall are respectively arranged at two ends of the bottom groove wall, the first side groove wall, the bottom groove wall and the second side groove wall are respectively abutted against the middle frame, the side plate and the bottom plate, one end of the diffusion plate is connected with the middle frame, and the other end of the diffusion plate is connected with the second side groove wall.

5. The backlight module as claimed in claim 4, wherein the middle frame has a first slot, the second side wall has a second slot corresponding to the first slot, one end of the diffuser is engaged with the first slot, and the other end of the diffuser is engaged with the second slot;

6. The backlight module according to any one of claims 1 to 5, wherein an inner surface of the mounting groove is coated with white ink to form a reflective layer.

7. The backlight module as claimed in any of claims 1-5, wherein a reflective sheet is stacked on a side of the light guide plate facing away from the light outlet, and a diffusion sheet and an optical film group are stacked on a light outlet side of the light guide plate.

8. A liquid crystal module, characterized in that, the liquid crystal module comprises a liquid crystal display panel and the backlight module set in any one of claims 1-7, the liquid crystal display panel is covered at the light outlet and is abutted against the shell.

9. The liquid crystal module as claimed in claim 8, wherein the housing has a mounting platform formed thereon and recessed toward the receiving cavity, and the liquid crystal display panel is mounted on the mounting platform.

10. A display device comprising the liquid crystal module according to any one of claims 8 or 9.