CN219872037U

CN219872037U - MINI LED backlight module and display device

Info

Publication number: CN219872037U
Application number: CN202320982649.2U
Authority: CN
Inventors: 祁亚洲; 徐勇
Original assignee: Jiangsu TSD Electronics Technology Co Ltd
Current assignee: Jiangsu TSD Electronics Technology Co Ltd
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-10-20
Anticipated expiration: 2033-04-26

Abstract

The utility model provides a MINI LED backlight module and a display device, wherein the MINI LED backlight module comprises a light source assembly and a plurality of lens assemblies, and the light source assembly comprises a plurality of lamp beads; the lens component is connected with the light source component and comprises a lens body, an incidence part and a scattering part, wherein the incidence part and the scattering part are respectively arranged at two ends of the lens body; the incident part is provided with a containing cavity, the lamp beads are arranged in the containing cavity, and one side of the containing cavity facing the lamp beads is provided with a light focusing structure; the scattering part is provided with a plurality of refraction structures, and the refraction structures are arranged on one side of the scattering part far away from the light source component; the lens body is converged along the direction of the scattering part towards the incidence part, and at least one group of lamp beads are arranged in the accommodating cavity. The lens body extends along the arrangement direction of the lamp beads, at least one group of lamp beads are arranged in the accommodating cavity, and brightness and uniformity of the light source assembly are guaranteed. The light condensing structure is suitable for converging the emitted light rays and increasing the brightness of the light source. The refraction structure is suitable for diffusing the light entering the incidence part so as to achieve the effect of uniform illumination.

Description

MINI LED backlight module and display device

Technical Field

The utility model relates to the technical field of display equipment, in particular to a MINI LED backlight module and a display device.

Background

In modern electronic products, a display device is an important component, and is widely applied to various electronic devices such as mobile phones, tablet computers, televisions, computers and the like. With the continuous development and progress of technology, the requirements of performance and quality of display devices are higher and higher, especially in terms of high definition, high brightness, low power consumption and the like.

The prior art provides a 180 even LED strip lens of degree luminosity and LED bar lamp, the upper surface of LED strip lens includes two arc curved surfaces of mutual symmetry, and the lower surface middle part of LED strip lens is equipped with half oval recess, and the both sides end of LED strip lens is equipped with the block portion. The LED strip lens with uniform 180-degree luminosity and the LED strip lamp have the beneficial effects that: the LED lens is arranged to be in a structure that the upper surface comprises two arc-shaped curved surfaces which are symmetrical to each other, and a semi-elliptical groove is formed in the middle of the lower surface, so that light rays emitted by the LED light-emitting component are reflected and refracted in the lens according to the refractive index of the lens material and the thickness distribution of the lens material, and finally uniform luminosity distribution in the places with the equal cross section of the box body is achieved.

The strip lens of above-mentioned structure, the structure of the half oval recess that sets up in the lower surface is not ideal enough to the effect of gathering of light source, and lens lateral wall face and lower surface contained angle are too little, and the incident light that the light source produced can not obtain fine scattering, and then leads to shining the effect nonideal.

Disclosure of Invention

The utility model aims to solve the technical problem that the existing structure is not ideal in convergence effect and scattering effect of a light source.

The utility model provides a MINI LED backlight module, which comprises a light source assembly and a plurality of lens assemblies, wherein the light source assembly comprises a plurality of lamp beads; the lens assembly is connected with the light source assembly and comprises a lens body, an incidence part and a scattering part, wherein the incidence part and the scattering part are respectively arranged at two ends of the lens body; the incident part is provided with a containing cavity, the lamp beads are arranged in the containing cavity, and a light focusing structure is arranged on one side of the containing cavity facing the lamp beads; the light gathering structure is suitable for gathering light rays emitted by the light source component; the scattering part is provided with a plurality of refraction structures which are arranged on one side of the scattering part far away from the light source component, the refraction structure is suitable for diffusing the light entering the incidence part; the lens body is converged along the direction of the scattering part towards the incident part, the lens body extends along the arrangement direction of the lamp beads, and at least one group of lamp beads are arranged in the accommodating cavity.

Optionally, the MINI LED backlight module further includes a substrate, the lamp beads are arranged on the substrate and connected with the substrate, and the substrate is suitable for connecting the lamp beads with external energy supply equipment.

Optionally, in the MINI LED backlight module, the lens assembly further includes a mounting structure, where the mounting structure is disposed on a side of the incident portion where the incident portion contacts the substrate, and the mounting structure includes a pair of oppositely disposed clamping members, where the two clamping members are disposed at intervals; and a plurality of mounting holes are formed in the substrate, and the two clamping pieces are respectively abutted to two sides of the mounting holes and are suitable for being clamped with the substrate to be fixedly connected with the lens assembly.

Optionally, in the MINI LED backlight module, an extension length of the lens assembly along the arrangement direction of the lamp beads is adapted to the length of the substrate.

Optionally, in the foregoing MINI LED backlight module, the refraction structure includes a plurality of arch-shaped protrusions that are adjacently disposed, and openings of the arch-shaped protrusions are disposed towards the lamp beads.

Optionally, in the MINI LED backlight module, the lens assembly is a PC/PMMA lens.

The utility model also provides a display device comprising the MINI LED backlight module.

Optionally, the display device further includes a housing assembly, the housing assembly includes an upper cover and a heat dissipation back plate, the upper cover and the heat dissipation back plate enclose together to form an installation cavity, the MINI LED backlight module is disposed in the installation cavity, the installation cavity has an opening, and the direction of the opening is the same as the light emitting side of the MINI LED backlight module.

Optionally, in the above display device, the heat dissipation back plate is provided with a plurality of avoidance grooves, and the avoidance grooves are adapted to accommodate the mounting structure.

Optionally, the display device further includes an optical film, and the optical film is covered on the MINI LED backlight module and connected with the upper cover.

The technical scheme provided by the utility model has the following advantages:

1. the MINI LED backlight module comprises a light source assembly and a plurality of lens assemblies, wherein the light source assembly comprises a plurality of lamp beads; the lens assembly is connected with the light source assembly and comprises a lens body, an incidence part and a scattering part, wherein the incidence part and the scattering part are respectively arranged at two ends of the lens body; the incident part is provided with a containing cavity, the lamp beads are arranged in the containing cavity, and a light focusing structure is arranged on one side of the containing cavity facing the lamp beads; the light gathering structure is suitable for gathering light rays emitted by the light source component; the scattering part is provided with a plurality of refraction structures which are arranged on one side of the scattering part far away from the light source component, the refraction structure is suitable for diffusing the light entering the incidence part; the lens body is converged along the direction of the scattering part towards the incident part, the lens body extends along the arrangement direction of the lamp beads, and at least one group of lamp beads are arranged in the accommodating cavity.

The MINI LED backlight module with the structure extends along the arrangement direction of the lamp beads through the mirror body, and at least one group of lamp beads are arranged in the accommodating cavity, so that the brightness and uniformity of the light source assembly are ensured. The light condensing structure is suitable for converging light rays emitted by the light source assembly and increasing the brightness of the light source. The refraction structure is suitable for diffusing the light entering the incidence part so as to achieve the effect of uniform illumination.

2. The display device provided by the utility model further comprises a shell component, wherein the shell component comprises an upper cover and a heat dissipation back plate, the upper cover and the heat dissipation back plate jointly enclose a mounting cavity, the MINI LED backlight module is arranged in the mounting cavity, the mounting cavity is provided with an opening, and the opening direction is the same as the light emitting side of the MINI LED backlight module.

The display device with the structure protects the internal components of the display device by arranging the shell component and simultaneously provides heat dissipation and installation support. The upper cover and the heat dissipation back plate can form a closed mounting cavity in a surrounding mode, and the MINI LED backlight module can be mounted in the mounting cavity. The opening direction of the mounting cavity is the same as the light emitting side of the MINI LED backlight module, so that the light irradiation direction of the MINI LED backlight module is consistent with the display panel of the display device, and the display effect and quality are improved. In addition, the design of heat dissipation backplate can help the heat dissipation, reduces display device's temperature, improves life and stability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a partial structure of a MINI LED backlight module according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a MINI LED backlight module according to an embodiment of the present utility model;

fig. 3 is a schematic cross-sectional structure of a display device according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of the overall structure of a display device according to an embodiment of the present utility model;

FIG. 5 is another view of the overall schematic of the display device according to the embodiment of the utility model;

reference numerals illustrate:

1-a light source assembly; 11-lamp beads; 12-a substrate; 121-mounting holes;

a 2-lens assembly; 21-a mirror body; 22-incidence part; 221-a receiving cavity; 23-scattering parts; 231-refractive structure; 24-mounting structure;

a 3-housing assembly; 31-an upper cover; 32-a heat-dissipating back plate; 321-avoiding grooves;

4-optical film.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1, the present embodiment provides a MINI LED backlight module, which includes a light source assembly 1 and a plurality of lens assemblies 2, wherein the light source assembly 1 includes a plurality of lamp beads 11; the lens assembly 2 is connected with the light source assembly 1, the lens assembly 2 comprises a lens body 21, an incidence part 22 and a scattering part 23, and the incidence part 22 and the scattering part 23 are respectively arranged at two ends of the lens body 21; the incident part 22 is provided with a containing cavity 221, the lamp beads 11 are arranged in the containing cavity 221, and a light focusing structure is arranged on one side of the containing cavity 221 facing the lamp beads 11; the light condensing structure is suitable for converging light rays emitted by the light source assembly 1; the scattering part 23 is provided with a plurality of refraction structures 231, the refraction structures 231 are arranged on one side of the scattering part 23 far away from the light source assembly 1, and the refraction structures 231 are suitable for diffusing light rays entering the incidence part 22; the lens body 21 converges along the direction of the scattering portion 23 toward the incident portion 22, the lens body 21 extends along the arrangement direction of the lamp beads 11, and at least one group of lamp beads 11 is disposed in the accommodating cavity 221. In this embodiment, the light source assembly 1 is composed of a plurality of lamp beads 11, and emits light as a backlight. The lens assembly 2 is connected to the light source assembly 1 and includes a mirror body 21, an incident portion 22, and a scattering portion 23. The lens assembly 2 is used for changing the propagation direction and the transmission degree of light rays so as to achieve the effects of uniform illumination and brightness improvement. The lens body 21 is used as a component of the lens assembly 2, and is converged along the direction of the scattering portion 23 towards the incidence portion 22, so as to disperse light from the incidence portion 22 towards the scattering portion 23, and further improve the uniformity of the display effect. The entrance portion 22 is also provided as an integral part of the lens assembly 2 with a receiving chamber 221, and the lamp beads 11 are placed in the receiving chamber 221. The receiving chamber 221 is provided with a condensing structure on a side facing the lamp beads 11 to condense light together, thereby increasing brightness of the light source. The diffusing part 23 is also an integral part of the lens assembly 2, and a plurality of refraction structures 231 are provided, wherein the refraction structures 231 are arranged on one side of the diffusing part 23 away from the light source assembly 1, and the refraction structures 231 are suitable for diffusing the light entering the incident part 22 so as to achieve the effect of uniform illumination.

As shown in fig. 1 and 2, the MINI LED backlight module provided in this embodiment, the light source assembly 1 further includes a substrate 12, the lamp beads 11 are arranged on the substrate 12 and connected with the substrate 12, and the substrate 12 is adapted to connect the lamp beads 11 with external energy supply equipment. The substrate 12 serves to supply power to the lamp beads 11 while also being able to fix and support the lamp beads 11. The lamp beads 11 can be conveniently powered and controlled by the connection of the base plate 12 and external energy supply equipment. Therefore, the substrate 12 is very important, and not only can ensure the normal operation of the MINI LED backlight module, but also can increase the stability and reliability of the MINI LED backlight module.

As shown in fig. 1 and 2, the MINI LED backlight module provided in this embodiment, the lens assembly 2 further includes a mounting structure 24, the mounting structure 24 is disposed on a side of the incident portion 22 contacting the substrate 12, the mounting structure 24 includes a pair of opposite clamping members, and the two clamping members are disposed at intervals; the base plate 12 is provided with a plurality of mounting holes 121, and two clamping pieces are respectively abutted on two sides of the mounting holes 121 and are suitable for clamping the base plate 12 to fixedly connect the lens assembly 2. The mounting structure 24 serves to fix the positions of the lens assembly 2 and the light source assembly 1 to ensure transmission of light and uniform illumination effect. The lens assembly 2 and the light source assembly 1 can be conveniently connected together through the mounting holes 121 on the base plate 12, and adjustment can be performed between the lens assembly 2 and the light source assembly 1 as required. Therefore, the mounting structure 24 is an important component of the MINI LED backlight module, which can improve stability and reliability of the MINI LED backlight module, and can also be conveniently mounted and maintained.

As shown in fig. 1 and 2, in the MINI LED backlight module provided in this embodiment, the extension length of the lens assembly 2 along the arrangement direction of the lamp beads 11 is adapted to the length of the substrate 12. This is to ensure that the lens assembly 2 can completely cover the light source assembly 1 and can uniformly focus the light emitted from the lamp beads 11 to the exit port of the MINI LED backlight module. If the extension length of the lens assembly 2 is insufficient or too long, the illumination effect of the MINI LED backlight module is affected, so that the illumination is uneven or light leakage occurs. Therefore, the extension length of the lens assembly 2 needs to be adapted to the length of the substrate 12 to ensure the illumination effect and quality of the MINI LED backlight module.

As shown in fig. 1 and fig. 2, the refraction structure 231 of the MINI LED backlight module provided in this embodiment includes a plurality of arch-shaped protrusions that are adjacently disposed, and openings of the arch-shaped protrusions are disposed towards the lamp beads 11. The openings of these arched projections are arranged towards the lamp beads 11, forming a convex and concave structure. When light is emitted from the lamp beads 11 and enters the refraction structure 231, the light is repeatedly refracted between the arch-shaped protrusions and the inner wall of the refraction structure 231 due to the difference of the refractive indexes, so that the transmission distance and the path of the light are increased, and the illumination effect and the uniformity of the MINI LED backlight module are improved. The adjacent arrangement of the arch-shaped protrusions can enable the light to be reflected and diffused inside the refraction structure 231, so that the dispersion and uniformity of the light are increased. Therefore, the design of the refraction structure 231 can improve the light efficiency and uniformity of the MINI LED backlight module, so that the lighting effect is more excellent.

In the MINI LED backlight module provided in this embodiment, the lens assembly 2 is a PC/PMMA lens. PC and PMMA materials are common transparent materials, have high light transmittance and good optical performance, and can be used for manufacturing lenses, optical elements and the like. The materials also have high mechanical strength, heat resistance and corrosion resistance, and are suitable for various environments and application occasions. In the MINI LED backlight module, the lens assembly 2 focuses the light emitted from the lamp beads 11, so that the light is more intensively and uniformly irradiated to the exit port of the MINI LED backlight module. Therefore, the lens component 2 is manufactured by selecting the material with excellent light transmission performance, so that the illumination effect and quality of the MINI LED backlight module can be improved, and the MINI LED backlight module is more suitable for various illumination application occasions.

Example 2

The embodiment provides a display device, which comprises the MINI LED backlight module.

As shown in fig. 3, the display device provided in this embodiment further includes a housing assembly 3, where the housing assembly 3 includes an upper cover 31 and a heat dissipation back plate 32, the upper cover 31 and the heat dissipation back plate 32 enclose a mounting cavity together, the MINI LED backlight module is disposed in the mounting cavity, the mounting cavity has an opening, and the opening direction is the same as the light emitting side of the MINI LED backlight module. The housing assembly 3 serves to protect the internal components of the display device while providing heat dissipation and mounting support. The upper cover 31 and the heat dissipation back plate 32 can form a closed mounting cavity, and the MINI LED backlight module can be mounted in the mounting cavity. The opening direction of the mounting cavity is the same as the light emitting side of the MINI LED backlight module, so that the light irradiation direction of the MINI LED backlight module is consistent with the display panel of the display device, and the display effect and quality are improved. In addition, the design of the heat dissipating backplate 32 may help dissipate heat, reduce the temperature of the display device, and improve the service life and stability. The design of the housing assembly 3 thus has a significant impact on the performance and quality of the display device.

As shown in fig. 5, in the display device provided in this embodiment, a plurality of avoidance grooves 321 are formed on the heat dissipation back plate 32, and the avoidance grooves 321 are adapted to accommodate the mounting structure 24. The design of the relief groove 321 may form grooves in the heat dissipation back plate 32 to accommodate the mounting structures 24, such as electronic components, circuit boards, etc., so as to avoid the mounting structures 24 from directly contacting the heat dissipation back plate 32, and prevent heat transfer and electrical interference. Meanwhile, the shape and position of the escape groove 321 can be designed and adjusted according to the size and shape of the mounting structure 24 to ensure the stability and safety of the mounting structure 24. In addition, dodging the design of groove 321 can also increase the surface area of heat dissipation backplate 32, strengthen the radiating effect, reduce display device's temperature, improve life and stability. Therefore, the design of the avoidance groove 321 on the heat dissipation back plate 32 is an effective solution, and can improve the performance and quality of the display device.

As shown in fig. 3 and 4, the display device provided in this embodiment further includes an optical film 4, where the optical film 4 is covered on the MINI LED backlight module and is connected to the upper cover 31. The optical film 4 is a transparent film having excellent optical properties, and can be used to enhance the display effect and quality of a display device. In this embodiment, the optical film 4 is covered above the MINI LED backlight module and is connected to the upper cover 31, and the optical film 4 can enhance the light transmittance and reflectivity of the MINI LED backlight module, so as to improve the display brightness and contrast. The optical film 4 can reduce reflection between the MINI LED backlight module and the display panel, thereby reducing glare and visual interference. Protecting the MINI LED backlight module: the optical membrane 4 can protect the MINI LED backlight module from dust, pollution, mechanical damage and the like, and prolongs the service life of the MINI LED backlight module.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The MINI LED backlight module is characterized by comprising:

the light source assembly (1), the light source assembly (1) comprises a plurality of lamp beads (11);

the lens assemblies (2) are connected with the light source assemblies (1), the lens assemblies (2) comprise a lens body (21), an incidence part (22) and a scattering part (23), and the incidence part (22) and the scattering part (23) are respectively arranged at two ends of the lens body (21);

the incident part (22) is provided with a containing cavity (221), the lamp beads (11) are arranged in the containing cavity (221), and a light focusing structure is arranged on one side of the containing cavity (221) facing the lamp beads (11); the light gathering structure is suitable for gathering light rays emitted by the light source assembly (1);

the light scattering part (23) is provided with a plurality of refraction structures (231), the refraction structures (231) are arranged on one side of the light scattering part (23) far away from the light source assembly (1), and the refraction structures (231) are suitable for diffusing light rays entering the incidence part (22);

the lens body (21) is converged towards the incidence part (22) along the scattering part (23), the lens body (21) extends along the arrangement direction of the lamp beads (11), and at least one group of lamp beads (11) is arranged in the accommodating cavity (221).

2. The MINI LED backlight module according to claim 1, wherein the light source assembly (1) further comprises a substrate (12), the lamp beads (11) are arranged on the substrate (12) and connected with the substrate (12), and the substrate (12) is adapted to connect the lamp beads (11) with an external power supply device.

3. The MINI LED backlight module according to claim 2, wherein the lens assembly (2) further comprises a mounting structure (24), the mounting structure (24) is disposed on a side of the incident portion (22) contacting the substrate (12), the mounting structure (24) comprises a pair of oppositely disposed clamping members, and two clamping members are disposed at intervals;

a plurality of mounting holes (121) are formed in the base plate (12), and the two clamping pieces are respectively abutted to two sides of the mounting holes (121) and are suitable for being clamped with the base plate (12) to be fixedly connected with the lens assembly (2).

4. A MINI LED backlight module according to any of claims 2-3, characterized in that the extension of the lens assembly (2) along the arrangement direction of the lamp beads (11) is adapted to the length of the substrate (12).

5. The MINI LED backlight module according to claim 4, wherein the refractive structure (231) comprises a plurality of adjacently arranged dome-shaped protrusions, the openings of the dome-shaped protrusions being arranged towards the lamp beads (11).

6. The MINI LED backlight module according to claim 5, wherein the lens assembly (2) is a PC/PMMA lens.

7. A display device, characterized by comprising the MINI LED backlight module according to any one of claims 1-6.

8. The display device according to claim 7, further comprising a housing assembly (3), wherein the housing assembly (3) comprises an upper cover (31) and a heat dissipation back plate (32), the upper cover (31) and the heat dissipation back plate (32) jointly enclose a mounting cavity, the MINI LED backlight module is arranged in the mounting cavity, the mounting cavity is provided with an opening, and the direction of the opening is the same as the light emitting side of the MINI LED backlight module.

9. The display device according to claim 8, wherein the heat dissipation back plate (32) is provided with a plurality of avoidance grooves (321), and the avoidance grooves (321) are suitable for accommodating the mounting structure (24).

10. The display device according to claim 9, further comprising an optical film (4), wherein the optical film (4) is covered on the MINI LED backlight module and is connected with the upper cover (31).