CN221149092U

CN221149092U - MiniLED backlight module

Info

Publication number: CN221149092U
Application number: CN202322710436.7U
Authority: CN
Inventors: 朱萌
Original assignee: General Touch Technology Co Ltd
Current assignee: General Touch Technology Co Ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2024-06-14
Anticipated expiration: 2033-10-10

Abstract

The utility model discloses a MiniLED backlight module which comprises a lamp panel, wherein LED lamps are uniformly distributed on the lamp panel, and transparent silica gel protective sleeves for weakening lamp shadows are wrapped on the LED lamps. The utility model can realize effective weakening of the lamp shadow on the premise of not increasing the thickness of the backlight module and the number of the LED lamps, and solves the technical problems of large thickness, high cost and poor practicability of the backlight module existing in the existing lamp shadow weakening technology.

Description

MiniLED backlight module

Technical Field

The utility model relates to the technical field of display, in particular to a MiniLED backlight module.

Background

With the rapid development of display technology in recent years, a Liquid Crystal Display (LCD) has become one of the most mature, widely applied and still rapidly developed display devices among many display devices, and thus has greatly promoted the development of touchers.

The liquid crystal display has the advantages of thin thickness, low power consumption, good heat dissipation performance and the like, but the liquid crystal display does not emit light and needs to emit light by means of another backlight module. The current backlight module generally adopts a direct type backlight source, and the backlight source generally distributes LED lamps on the back surface of the whole display, so that the brightness is greatly improved. In addition, the backlight source usually uses a blue light LED lamp, the blue light LED lamp can obtain white light through an optical film mixed with red and green quantum dots, and the stimulated radiation of the red and green quantum dots emits green light and red light with extremely narrow half-wave width, so that the color gamut can be improved to be more than NTSC 100%.

The direct type backlight source improves brightness and color gamut, but generates new lamp shadow problems because the lamp beads are distributed on the whole back surface. The conventional method for weakening the shadow is to enlarge the height of the lamp panel support post or increase the number of the LED lamps, but the thickness of the backlight module is increased by enlarging the height of the support post, and the cost is increased by increasing the number of the LED lamps, so that the practicality is poor.

Disclosure of utility model

The utility model aims to overcome the problems in the prior art and provide a MiniLED backlight module, which can realize effective weakening of lamp shadows on the premise of not increasing the thickness of the backlight module and the number of LED lamps and solves the technical problems of large thickness, high cost and poor practicability of the backlight module in the prior art of weakening the lamp shadows.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

A MiniLED backlight module comprises a lamp panel, LED lamps are uniformly distributed on the lamp panel, and transparent silica gel protective sleeves for weakening lamp shadows are wrapped on the LED lamps.

The transparent silica gel protective sleeve is in a regular quadrangular pyramid shape.

The top of transparent silica gel protective sheath is spherical structure.

The axis of the transparent silica gel protective sleeve coincides with the axis of the LED lamp.

The transparent silica gel protective sleeve is fixed on the lamp panel through a dispensing technology and wraps the LED lamp.

The height of the transparent silica gel protective sleeve on the lamp panel does not exceed the height of the support column on the lamp panel.

The backlight module further comprises a back plate, a diffusion plate, a quantum dot film, a 0-degree prism sheet, a 90-degree prism sheet and a DBEF optical film, wherein the back plate, the lamp panel, the diffusion plate, the quantum dot film, the 0-degree prism sheet, the 90-degree prism sheet and the DBEF optical film are sequentially and fixedly connected.

The utility model has the advantages that:

1. According to the utility model, the transparent silica gel protective sleeve is wrapped on each LED lamp, and the silica gel is liquid organic silica gel and has an open porous structure, so that after light rays emitted by the LED lamps enter the silica gel, the light rays can be reflected in all directions in the porous structure of the silica gel, and the porous structure in the silica gel enables the light rays to be reflected for multiple times and then emitted out of the surface of the silica gel, so that the light homogenizing effect is realized. Therefore, the transparent silica gel protective sleeve can play a role in effectively weakening a lamp shadow and protecting lamp beads, and compared with the prior art, the transparent silica gel protective sleeve can realize effective weakening of the lamp shadow on the premise of not increasing the thickness of a backlight module and the number of LED lamps, and meanwhile, the service life of the LED lamps is prolonged, so that the transparent silica gel protective sleeve has the advantages of being thinner, reducing cost and being stronger in practicability.

2. According to the utility model, the transparent silica gel protective sleeve is in a regular quadrangular pyramid shape, the LED lamp can be fully covered by the regular quadrangular pyramid-shaped silica gel, meanwhile, the transparent silica gel protective sleeve with the regular quadrangular pyramid-shaped structure can be used for condensing light from the directions of 0 DEG and 90 DEG, so that the brightness enhancement effect is achieved, the image quality of the liquid crystal display is more uniform, and the LED lamp has the advantage of being beneficial to further reducing the use quantity of the LED lamp.

3. According to the utility model, the top end of the transparent silica gel protective sleeve is provided with the spherical structure, and the spherical structure can play a role in protecting the LED lamp from being damaged when the product is assembled.

4. According to the LED lamp, the axis of the transparent silica gel protective sleeve is overlapped with the axis of the LED lamp, so that the emergent light angles of the four surfaces of the protective sleeve are consistent, and the luminous brightness of the LED lamp is uniform. Otherwise, if the axes of the two are not coincident, the inclination angles and the area sizes of the four surfaces of the silica gel protective sleeve are not consistent, so that the emergent light distribution is inconsistent, and uneven brightness is caused.

5. According to the LED lamp, the transparent silica gel protective sleeve can be fixed on the lamp panel and wrapped on the LED lamp through the dispensing technology, so that the wrapping of the transparent silica gel protective sleeve is simpler and more convenient, and the LED lamp has the advantages of being convenient to produce and reducing production cost.

6. The height of the transparent silica gel protective sleeve on the lamp panel is limited to be not more than the height of the support column on the lamp panel, so that the lamp shadow can be weakened better on the premise of not increasing the thickness of the product.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic diagram of a lamp panel according to the present utility model;

Fig. 3 is a schematic diagram of the utility model for concentrating increments from 0 deg. and 90 deg. directions.

Marked in the figure as: 1. the LED lamp comprises a lamp panel, 2, an LED lamp, 3, a transparent silica gel protective sleeve, 4, a back plate, 5, a diffusion plate, 6, a quantum dot film, 7, 0-degree prism sheets, 8, 90-degree prism sheets and 9, DBEF optical films.

Detailed Description

As shown in fig. 1, the utility model provides a MiniLED backlight module, which comprises a lamp panel 1, a back plate 4, a diffusion plate 5, a quantum dot film 6, a 0-degree prism sheet 7, a 90-degree prism sheet 8 and a DBEF optical film 9, wherein the back plate 4, the lamp panel 1, the diffusion plate 5, the quantum dot film 6, the 0-degree prism sheet 7, the 90-degree prism sheet 8 and the DBEF optical film 9 are sequentially and fixedly connected, and a plurality of LED lamps 2 are uniformly distributed on the lamp panel 1.

As shown in fig. 2, in order to weaken the shadow and protect the LED lamps 2, a transparent silica gel protective sleeve 3 is wrapped on each LED lamp 2, and the transparent silica gel protective sleeve 3 has the functions of weakening the shadow, protecting the LED lamps 2 and concentrating and brightening. Wherein, each transparent silica gel protective sheath 3 accessible point gum technology is fixed on lamp plate 1 and is wrapped up on LED lamp 2, and the transparent silica gel protective sheath 3 highly does not exceed the height of support column on lamp plate 1 after the fixed, both guarantees that backlight unit's thickness can not increase, can play the effect that effectively weakens the lamp shadow again, protect LED lamp 2 and spotlight brightening.

Preferably, the transparent silica gel protective sleeve 3 is in a regular quadrangular pyramid shape, the top end of the transparent silica gel protective sleeve is in a spherical structure, and the axial lead of the transparent silica gel protective sleeve is coincident with the axial lead of the LED lamp 2. Based on the transparent silica gel protective sheath 3 of this structure for it can follow 0 and 90 orientation respectively to the spotlight of corresponding LED lamp 2 increase the brightness, not only can further improve the light shadow weakening effect, can also reduce the quantity of LED lamp 2.

Specifically, as shown in fig. 3, the principle of the utility model for concentrating and brightening from 0 ° and 90 ° directions is as follows:

The transparent silica gel protective sleeve 3 can refract incident light with a large angle of about 120 degrees and then emit the incident light with a small angle of about 70 degrees, so that the brightness is improved. The large-angle light emitted by the LED lamp 2 enters the silica gel protective layer of the regular pyramid, and part of the light is in the 0-degree direction, namely, the left surface and the right surface of the regular pyramid have the following paths: ① Part of the light is reflected back to the surface of the lamp panel 1 and then reflected again for reuse; ② Part of the light is refracted and emitted, and the angle of the emitted light is about 70 degrees; ③ Part of the light is refracted and then enters the next prism to be used. The paths of the light rays emitted by the LED lamp 2 on the other two surfaces of the regular rectangular pyramid, namely, the 90 ° directions are the same as the three paths, and the angle of the emitted light is usually about 70 °. Thus, the light condensation and brightness enhancement can be realized. It should be noted that the principle of brightness enhancement is the same as that of prism film (BEF), and is now being used.

In practical application, the transparent silica gel protective sleeve 3 has an open porous structure, so that after light rays emitted by the LED lamp 2 enter the silica gel, the light rays are reflected in all directions in the porous structure of the silica gel, and the porous structure in the silica gel enables the light rays to be reflected for multiple times and then emitted out of the surface of the silica gel, thereby playing a role of homogenizing light. In addition, after the incident light with a large angle (120 °) enters the regular quadrangular pyramid-shaped silica gel protective sleeve, refraction occurs in the directions of 0 ° and 90 ° respectively, and the incident light exits at a smaller angle (about 70 °) to increase brightness.

In addition, the applicant prepared four be decorated with lanterns boards 1 to verify the utility model, specifically as follows:

The first be decorated with lanterns board 1 has 5176 LED lamps 2, the gap between the LED lamps 2 is 11.22 x 11.25 (H x V), after the optical film and the liquid crystal display panel are covered on the lamp board 1 in sequence, the blackening phenomenon is obvious at the corresponding position of the LED lamps 2 on the display.

The second be decorated with lanterns board 1 is formed by adding a support column with the height of 6.25mm on the first be decorated with lanterns board 1, and after the optical film and the liquid crystal display panel are assembled in sequence, the blackening lamp shadow is obviously reduced, but is still clearly visible.

The third is to increase the number of the LED lamps 2 to 10352 on the first be decorated with lanterns board 1, and after the optical film and the liquid crystal display panel are assembled in sequence, the lamp shadow phenomenon is improved by more than 50%, and the lamp shadow is visible to human eyes.

And the fourth step is to add the transparent silica gel protective sleeve 3 of the utility model on the first be decorated with lanterns plates 1, and then sequentially assemble the optical film and the liquid crystal display panel, so that the lamp shadow is invisible.

In addition, on the premise of keeping the brightness unchanged, the number of the LED lamps 2 can be reduced by increasing the current on the fourth be decorated with lanterns board 1.

In summary, the utility model can realize effective weakening of the lamp shadow without increasing the thickness of the backlight module and the number of the LED lamps 2, and simultaneously improve the service life of the LED lamps 2, thereby enabling the product to have the advantages of thinner thickness, lower cost and stronger practicability.

While the utility model has been described with reference to certain embodiments, it is understood that any feature disclosed in this specification may be replaced by alternative features serving the equivalent or similar purpose, unless expressly stated otherwise; all of the features disclosed, or all of the steps in a method or process, except for mutually exclusive features and/or steps, may be combined in any manner.

Claims

1. MiniLED backlight module, its characterized in that: the LED lamp comprises a lamp panel (1), wherein LED lamps (2) are uniformly distributed on the lamp panel (1), and a transparent silica gel protective sleeve (3) for weakening a lamp shadow is wrapped on each LED lamp (2);

the transparent silica gel protective sleeve (3) is in a regular quadrangular pyramid shape;

the top end of the transparent silica gel protective sleeve (3) is of a spherical structure;

The axis of the transparent silica gel protective sleeve (3) is overlapped with the axis of the LED lamp (2);

The height of the transparent silica gel protective sleeve (3) on the lamp panel (1) does not exceed the height of the support column on the lamp panel (1).

2. The MiniLED backlight module according to claim 1, wherein: the transparent silica gel protective sleeve (3) is fixed on the lamp panel (1) through a dispensing technology and wraps the LED lamp (2).

3. A MiniLED backlight module according to claim 1 or 2, wherein: the backlight module further comprises a back plate (4), a diffusion plate (5), a quantum dot film (6), a 0-degree prism sheet (7), a 90-degree prism sheet (8) and a DBEF optical film (9), wherein the back plate (4), the lamp panel (1), the diffusion plate (5), the quantum dot film (6), the 0-degree prism sheet (7), the 90-degree prism sheet (8) and the DBEF optical film (9) are sequentially and fixedly connected.