CN207488675U

CN207488675U - Backlight module, liquid crystal display and terminal device

Info

Publication number: CN207488675U
Application number: CN201721667122.1U
Authority: CN
Inventors: 宋高博
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2017-12-04
Filing date: 2017-12-04
Publication date: 2018-06-12
Anticipated expiration: 2027-12-04

Abstract

The utility model discloses a kind of backlight module, liquid crystal display and terminal device, wherein, backlight module includes light guide plate and the lamp bar for being arranged on light guide plate side, lamp bar includes the PCB and spaced several LED of length direction along PCB, further include a light-guiding pillar, light-guiding pillar has the first end face being connect with the side of light guide plate and the second end face being connect with PCB, the side covering first end face of light guide plate, and second end face covers several LED.The utility model is by the way that light-guiding pillar is arranged between light guide plate and lamp bar, and the first end face of light-guiding pillar is covered by the side of light guide plate, LED in second end face covering lamp bar, the light of LED can all be focused on to a side of light guide plate by light-guiding pillar, and liquid crystal display panel is oriented to by light guide plate through the side, so as to solve the leakage problem when liquid crystal display device of ultra-thin type uses high-power, large-sized LED.

Description

Backlight module, liquid crystal display and terminal device

Technical field

A kind of liquid the utility model is related to display screen technology field more particularly to backlight module and comprising the backlight module Crystal display screen and terminal device.

Background technology

At present, the backlight of liquid crystal display device generally uses LED (light-emitting diode, light emitting diode) As light source, according to the distributing position of light source, there are two types of set-up modes, respectively straight-down negative and side entering type for backlight tool.Wherein, Side-edge type backlight refers to that LED is arranged on the side of backlight.For extra-thin liquid crystal display device, big work(is used When rate, large-sized LED, the thickness of light guide plate is often below the thickness of LED, causes light leakage phenomena very serious, so as to influence The use of the liquid crystal display device.

Utility model content

The utility model embodiment is designed to provide a kind of backlight module, liquid crystal display and terminal device, can keep away Exempt to generate light leakage phenomena.

In order to achieve the above object, the utility model embodiment uses following technical scheme：

On the one hand, a kind of backlight module is provided, including light guide plate and the lamp bar for being arranged on the light guide plate side, the lamp Item includes the PCB and spaced several LED of length direction along the PCB, further includes a light-guiding pillar, the light-guiding pillar has The first end face being connect with the side of the light guide plate and the second end face being connect with the PCB, the side of the light guide plate are covered The first end face is covered, the second end face covers several LED.

As the preferred embodiment of backlight module, the LED is convexly equipped on the PCB, and the second end face corresponds to the LED Position offer several holding tanks, the protrusion part of the LED is located in the holding tank.

As the preferred embodiment of backlight module, the slot bottom of the holding tank is the arcuate structure towards the LED projections.

As the preferred embodiment of backlight module, the slot bottom of the holding tank is the spherical structure towards the LED projections.

As the preferred embodiment of backlight module, the upper surface of the light-guiding pillar is coated with backlight layer.

As the preferred embodiment of backlight module, the first end face is abutted with the side of the light guide plate, the second end Face is adhesively fixed with the PCB.

As the preferred embodiment of backlight module, the abutting edge of the PCB and the second end face be provided with several grooves or Person's protrusion.

As the preferred embodiment of backlight module, the cross section of the light-guiding pillar is isosceles trapezoidal structure.

On the other hand, a kind of liquid crystal display is provided, including the backlight module.

Another aspect provides a kind of terminal device, including the backlight module.

The utility model embodiment has the beneficial effect that：The utility model by light-guiding pillar by being arranged on light guide plate and lamp bar Between, and the first end face of light-guiding pillar is covered by the side of light guide plate, the LED in second end face covering lamp bar, it can be by LED's Light all focuses on a side of light guide plate by light-guiding pillar, and is oriented to liquid crystal display panel by light guide plate through the side, so as to solve The liquid crystal display device of certainly ultra-thin type uses leakage problem during high-power, large-sized LED.

Description of the drawings

The utility model is described in further detail below according to drawings and examples.

Fig. 1 is the decomposition diagram at the first visual angle of the backlight module described in the utility model embodiment.

Fig. 2 is the partial enlarged view of I parts in Fig. 1.

Fig. 3 is the decomposition diagram at the second visual angle of the backlight module described in the utility model embodiment.

Fig. 4 is the partial enlarged view of II parts in Fig. 3.

Fig. 5 is the sectional view of the backlight module described in the utility model embodiment.

In figure：

1st, light guide plate；2nd, lamp bar；21、PCB；22、LED；3rd, light-guiding pillar；31st, first end face；32nd, second end face；33rd, hold Receive slot.

Specific embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

As shown in Fig. 1 to 5, the embodiment of the utility model provides a kind of backlight module, is led including light guide plate 1 and being arranged on The lamp bar 2 of 1 side of tabula rasa, lamp bar 2 include the PCB21 and spaced several LED22 of length direction along PCB21, further include One light-guiding pillar 3, light-guiding pillar 3 have the first end face 31 being connect with the side of light guide plate 1 and the second end face being connect with PCB21 32, the side covering first end face 31 of light guide plate 1, second end face 32 covers LED22.In the present embodiment, light-guiding pillar 3, which is arranged on, leads Between tabula rasa 1 and lamp bar 2, and the first end face 31 of light-guiding pillar 3 is covered by the side of light guide plate 1, and second end face 32 covers lamp bar 2 On LED22, the light of LED22 can all be focused on to sides of light guide plate 1 by light-guiding pillar 3, and through the side by Light guide plate 1 is oriented to liquid crystal display panel, when using high-power, large-sized LED22 so as to solve the liquid crystal display device of ultra-thin type Leakage problem.

In the case of LED22 is convexly equipped on PCB21, the position that the present embodiment corresponds to LED22 in second end face 32 opens up There are several holding tanks 33, the protrusion part of LED22 is made to be located in holding tank 33, by holding tank 33 by the protrusion part of LED22 All packages, further avoid the occurrence of exposure phenomenon.

In one preferred embodiment of the utility model, the slot bottom of holding tank 33 is the arcuate structure towards LED22 projections, The light of LED22 is made to focus on the side of light guide plate 1 by the slot bottom of the arcuate structure.

Alternatively, the slot bottom of holding tank 33 is designed as the spherical structure towards LED22 projections, pass through the spherical structure Slot bottom the light of LED22 is made to focus on the side of light guide plate 1.

Light further to avoid LED22 is projected by the upper surface of light-guiding pillar 3, and the back of the body is coated in the upper surface of light-guiding pillar 3 Photosphere (not shown), backlight layer are a kind of lighttight film layers, and light is mainly prevented to be pierced by from 3 upper surface of light-guiding pillar, are led to It crosses backlight layer the light reflection penetrated in upper surface is returned, further prevents light leakage phenomena occur.

In the present embodiment, first end face 31 is abutted with the side of light guide plate 1, and second end face 32 is Nian Jie with PCB21, is led to It crosses bonding light-guiding pillar 3 is fixed in lamp bar 2.

Preferably, PCB21 and the abutting edge of second end face 32 are provided with several grooves or protrusion, to improve light-guiding pillar 3 With the bonding stability of lamp bar 2.

In other embodiments, first end face 31 is abutted with the side of light guide plate 1, and LED22 is outer and is set positioned at ring on PCB21 There is fixed frame, second end face 31 is installed on (not shown) in fixed frame.

In this present embodiment, the cross section of light-guiding pillar 3 is isosceles trapezoidal structure, is conducive to leaded light, and can improve backlight mould The aesthetics of group.

Also a kind of liquid crystal display of the embodiment of the utility model, the liquid crystal display include any of the above-described any embodiment Backlight module, the liquid crystal display is using having good leakproof light effect during high-power, large scale LED lamp bead.Liquid crystal Display screen further includes the components such as liquid crystal display panel, specifically repeats no more other than including backlight module.

The embodiment of the utility model also provides a kind of terminal device, such as Intelligent flat, LCD TV etc., which sets The standby backlight module for including any of the above-described embodiment, with good leakproof light effect.

It is to be understood that above-mentioned specific embodiment is only the preferred embodiment of the utility model and institute's application technology Principle, in technical scope disclosed in the utility model, what any one skilled in the art was readily apparent that Change or replacement should all be covered within the protection scope of the present utility model.

The utility model is illustrated above by specific embodiment, but the utility model is not limited to these tools The embodiment of body.It will be understood by those skilled in the art that various modifications, equivalent replacement, variation can also be done to the utility model Etc..But these transformation should be all within the protection scope of the utility model without departing from the spirit of the utility model. In addition, some terms used in present specification and claims are not limitation, it is only for convenient for description.

Claims

1. a kind of backlight module, including light guide plate and the lamp bar for being arranged on the light guide plate side, the lamp bar includes PCB and edge The spaced several LED of length direction of the PCB, which is characterized in that further include a light-guiding pillar, the light-guiding pillar have with The first end face of the side connection of the light guide plate and the second end face being connect with the PCB, the side covering of the light guide plate The first end face, the second end face cover several LED.

2. backlight module according to claim 1, which is characterized in that the LED is convexly equipped on the PCB, and described second The position that end face corresponds to the LED offers several holding tanks, and the protrusion part of the LED is located in the holding tank.

3. backlight module according to claim 2, which is characterized in that the slot bottom of the holding tank is convex towards the LED If arcuate structure.

4. backlight module according to claim 2, which is characterized in that the slot bottom of the holding tank is convex towards the LED If spherical structure.

5. backlight module according to claim 1, which is characterized in that the upper surface of the light-guiding pillar is coated with backlight layer.

6. backlight module according to claim 1, which is characterized in that the first end face and the side of the light guide plate are supported It connects, the second end face is adhesively fixed with the PCB.

7. backlight module according to claim 6, which is characterized in that the PCB and the abutting edge of the second end face are set It is equipped with several grooves or protrusion.

8. backlight module according to any one of claims 1 to 7, which is characterized in that the cross section of the light-guiding pillar for etc. Waist trapezium structure.

9. a kind of liquid crystal display, which is characterized in that including claim 1 to 8 any one of them backlight module.

10. a kind of terminal device, which is characterized in that including claim 1 to 8 any one of them backlight module.