CN215340615U

CN215340615U - LED backlight module

Info

Publication number: CN215340615U
Application number: CN202022610916.2U
Authority: CN
Inventors: 占贤武; 郭天宇
Original assignee: Suzhou Hanraysun Optoelectronic Co ltd
Current assignee: Suzhou Hanraysun Optoelectronic Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-12-28
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses an LED backlight module, which comprises a frame body, wherein a reflecting plate is fixed on the inner wall of the frame body, an LED light source assembly is fixed on the reflecting plate, a reflecting membrane is also fixed in the frame body, a light guide plate is fixed on the reflecting membrane, a light transmitting membrane is fixed on the frame body, a diffusion membrane covers one side of the light transmitting membrane, and an arc-shaped concave is arranged on the light transmitting membrane. The reflection diaphragm through the slope cooperates the light that LED light source subassembly sent that the light guide plate can be fine, can improve light diffusion effect through the arc indent on the printing opacity diaphragm.

Description

LED backlight module

Technical Field

The utility model belongs to the technical field of LED backlight modules, and particularly relates to an LED backlight module.

Background

The backlight module is one of the key components of the liquid crystal display panel, and has the function of supplying sufficient light source with uniform brightness and distribution, so that the backlight module can normally display images.

The backlight source is a light source located at the back of the liquid crystal display, and the lighting effect of the backlight source directly affects the visual effect of the liquid crystal display module.

The current backlight module generally and directly diffuses through the diffuse reflection film when projecting a light source, but the simple diffuse reflection film has limited diffusion effect, and when playing images in some large commercial areas, the brightness of the light source cannot reach the best, so that the viewing effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an LED backlight module to solve the problem of poor light effect.

In order to achieve the purpose, the utility model provides the following technical scheme: LED backlight unit, including the framework, be fixed with the reflecting plate on the inner wall of framework, be fixed with LED light source subassembly on the reflecting plate, still be fixed with the reflection diaphragm in the framework, be fixed with the light guide plate on the reflection diaphragm, be fixed with the diaphragm that passes through in the framework, one side of diaphragm that passes through covers there is the diffusion diaphragm, be provided with the arc indent on the diaphragm that passes through.

Preferably, the reflecting plate is of a concave structure, two sides of the reflecting plate extend to be respectively attached to the reflecting film and the light guide plate, the light source of the LED light source component can be well reflected to the reflecting film, and the light projecting effect is guaranteed.

Preferably, one side of the light guide plate is an inclined plane, and the inclination angle is thirty degrees, so that light can be better reflected, and meanwhile, light of the light source can be well received.

Preferably, the arc-shaped concaves are distributed in 7-11 array, and are symmetrically distributed on the light-transmitting film, so that the effect of a concave lens for diffusing light sources can be achieved, and the display brightness is greatly improved.

Preferably, the LED light source component is an LED lamp strip structure, and the LED lamp strip structure is formed by combining an aluminum alloy plate with a plurality of LED lamp beads.

Preferably, the diffusion film is provided with diffuse reflection protrusions, so that light can be further transmitted and can be scattered and projected.

Preferably, the thickness of the light-transmitting membrane is not more than 0.6 mm, so that the phenomenon that the thickness is large and the light diffusion effect of the arc-shaped concave is influenced is avoided.

Compared with the prior art, the utility model has the beneficial effects that: the reflection diaphragm through the slope cooperates the light that LED light source subassembly sent that the light guide plate can be fine, can improve light diffusion effect through the arc indent on the printing opacity diaphragm.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the utility model at a;

FIG. 3 is a schematic view of the distribution of the arc-shaped indent of the present invention.

In the figure: 1. a frame body; 11. a reflective plate; 12. an LED light source assembly; 13. a reflective membrane; 14. a light guide plate; 15. a light-transmitting film; 16. a diffusion membrane; 2. the arc is concave inwards; 3. and (4) diffuse reflection protrusions.

Detailed Description

Referring to fig. 1 and 2, the LED backlight module includes a frame 1, a reflector 11 is fixed on an inner wall of the frame 1, an LED light source assembly 12 is fixed on the reflector 11, a reflector 13 is fixed in the frame 1, a light guide plate 14 is fixed on the reflector 13, a light transmissive film 15 is fixed on the frame 1, a diffusion film 16 covers one side of the light transmissive film 15, and an arc-shaped indent 2 is formed on the light transmissive film 15.

Referring to fig. 1, the reflective plate 11 has a concave structure, and two sides of the reflective plate extend to be respectively attached to the reflective film 13 and the light guide plate 14, so that the light source of the LED light source assembly 12 can be well reflected to the reflective film 13, and the light projection effect is ensured.

Referring to fig. 1, one side of the light guide plate 14 is an inclined plane, and the inclined angle is thirty degrees, so that the light can be better reflected, and meanwhile, the light of the light source can be better received.

Referring to fig. 1 and fig. 3, the arc-shaped dimples 2 are distributed in 7 × 11 array, and the arc-shaped dimples 2 are symmetrically distributed on the light-transmitting film 15, so that the effect of a concave lens for diffusing light sources can be achieved, and the display brightness can be greatly improved.

Referring to fig. 1, the LED light source assembly 12 is an LED light bar structure, and the LED light bar structure is formed by combining an aluminum alloy plate and a plurality of LED light beads.

Referring to fig. 1 and 2, the diffusion film 16 is provided with diffuse reflection protrusions 3, which can further transmit light and scatter and project the light.

Referring to fig. 1, the thickness of the transparent film 15 is not more than 0.6 mm, so as to avoid the influence of the large thickness on the light diffusion effect of the arc-shaped indent 2.

The working principle of the scheme is as follows: reflecting plate 11 is concave type structure, and both sides extend and laminate with reflective membrane 13 and light guide plate 14 respectively, can guarantee the light projection effect with the fine reflection of the light source of LED light source subassembly 12 to reflective membrane 13 on, one side of light guide plate 14 is the inclined plane, and inclination is thirty degrees, can be better with light reflection, simultaneously, also can be fine receiving light source light.

Arc indent 2 distributes with 7 x 11 array, arc indent 2 symmetric distribution on printing opacity diaphragm 15, can play a concave lens diffuse light source's effect, improve display brightness greatly, LED light source subassembly 12 is LED lamp strip structure, LED lamp strip structure is formed by a plurality of LED lamp pearl combination of aluminum alloy plate cooperation, it is protruding 3 to be provided with the diffuse reflection on the diffusion diaphragm 16, light printing opacity that can step forward, and the dispersion is thrown away, printing opacity diaphragm 15 avoids thickness great, influence arc indent 2's diffuse light effect.

Claims

LED backlight unit, including framework (1), its characterized in that: be fixed with reflecting plate (11) on the inner wall of framework (1), be fixed with LED light source subassembly (12) on reflecting plate (11), still be fixed with reflection diaphragm (13) in framework (1), be fixed with light guide plate (14) on reflection diaphragm (13), be fixed with light-transmitting diaphragm (15) on framework (1), one side of light-transmitting diaphragm (15) covers there is diffusion diaphragm (16), be provided with arc indent (2) on light-transmitting diaphragm (15).
2. The LED backlight module of claim 1, wherein: the reflecting plate (11) is of a concave structure, and two sides of the reflecting plate extend to be respectively attached to the reflecting film (13) and the light guide plate (14).
3. The LED backlight module of claim 1, wherein: one side of the light guide plate (14) is an inclined plane, and the inclination angle is thirty degrees.
4. The LED backlight module of claim 1, wherein: the arc-shaped dimples (2) are distributed in an array of 7 x 11.
5. The LED backlight module of claim 1, wherein: the LED light source assembly (12) is of an LED light bar structure.
6. The LED backlight module of claim 1, wherein: and diffuse reflection bulges (3) are arranged on the diffusion membrane (16).
7. The LED backlight module of claim 1, wherein: the thickness of the light-transmitting film (15) is not more than 0.6 mm.