CN202421531U

CN202421531U - Light guide plate, backlight source module and liquid crystal display

Info

Publication number: CN202421531U
Application number: CN2012200643089U
Authority: CN
Inventors: 华广胜; 布占场; 金�雄
Original assignee: Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Priority date: 2012-02-24
Filing date: 2012-02-24
Publication date: 2012-09-05
Anticipated expiration: 2022-02-24

Abstract

The utility model discloses a light guide plate, a backlight source module and a liquid crystal display, and mainly aims to decrease the thickness and weight of the liquid crystal display. The liquid crystal display at least comprises a liquid crystal display panel and the backlight source module. The backlight source module at least comprises the light guide plate and an optical module arranged on the emergent side of the light guide plate. A limiting check ring for limiting the optical module and/or the liquid crystal display panel is arranged on the periphery of the emergent side of the light guide plate. The light guide plate with the novel structure can replace the conventional frame, so that the whole backlight source module and the liquid crystal display are light and thin, cost is lowered, and disassembly is facilitated.

Description

Light guide plate, backlight module and liquid crystal display

Technical Field

The utility model relates to a LCD technical field especially relates to a light guide plate, backlight module and LCD.

Background

In the prior art, a liquid crystal display includes at least a liquid crystal display panel, a backlight module, and a Frame (Mold Frame) for encapsulating the backlight module. The backlight source assembly structure comprises a frame, a backlight source, a liquid crystal display panel, a backlight source and a backlight module, wherein the frame is provided with a bearing plane for bearing the liquid crystal display panel; then, a metal Bezel (Bezel) is installed at the periphery of the liquid crystal display panel, and the liquid crystal display panel is supported from the outside through the metal Bezel, so that the liquid crystal display panel is fixed between the metal Bezel and the supporting plane of the plastic frame.

The backlight source with the structure is complex in structure, and the whole liquid crystal display is thick and heavy and high in cost.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a enable LCD more frivolous, and light guide plate, backlight module and LCD with low costs.

In order to achieve the above object, the light guide plate has a light emitting side, and the edges around the light emitting side are provided with a limit retainer ring for limiting the optical module and/or the liquid crystal display panel.

In a specific embodiment, the limiting retainer ring comprises two stages of limiting retainer rings, and the two stages of limiting retainer rings form a ladder shape; wherein,

the distance from the limiting inner profile surface of the first-stage limiting retainer ring at the bottom end to the center of the light-emitting side end surface of the light guide plate is smaller than the distance from the limiting inner profile surface of the second-stage limiting retainer ring at the top end to the center of the light-emitting side end surface of the light guide plate.

Furthermore, the projection profile of the limiting inner profile surface of the first-stage limiting retainer ring is an asymmetric graph.

Further, the height of the first-stage limit retainer ring should be larger than the thickness of the optical module.

In order to achieve the above object, the backlight module of the present invention at least comprises: the light guide plate comprises a light guide plate and an optical film group arranged on the light emergent side of the light guide plate; the light guide plate is the light guide plate with the structure.

In order to achieve the above object, the liquid crystal display of the present invention at least comprises: the liquid crystal display panel and the backlight module are characterized in that the backlight module light guide plate is the backlight module with the structure.

The utility model has the advantages that:

the utility model discloses a novel light guide plate of structure, the traditional frame can be replaced to the light guide plate of this structure for whole backlight module and LCD are more frivolous, and cost reduction, and convenient to detach.

Drawings

Fig. 1 is a schematic structural view of the light guide plate of the present invention;

fig. 2 is a schematic structural diagram of the liquid crystal display according to the present invention;

fig. 3 is a view from a-a of fig. 2.

Detailed Description

The invention is further described with reference to the accompanying drawings.

As shown in fig. 1, the light guide plate 4 of the present invention has a limiting retainer ring 41 disposed at the edge of the light emitting side for limiting the optical module and/or the liquid crystal display panel.

As a preferred embodiment of the present invention, the limit retainer 41 includes two stages of

limit retainers

411 and 412, and the two stages of

limit retainers

411 and 412 form a step shape; wherein,

the distance from the limiting inner profile surface of the first-stage limiting retainer ring 412 at the bottom end to the center of the light-emitting side end surface of the light guide plate 4 is smaller than the distance from the limiting inner profile surface of the second-stage limiting retainer ring 411 at the top end to the center of the light-emitting side end surface of the light guide plate.

Therefore, the upper surface 413 of the second-stage position-limiting retainer ring 411 can be used as a supporting plane of the liquid crystal display panel, and further replaces a frame in the prior art.

Among them, it should be noted that: the utility model discloses in spacing retaining ring in the first order highly should be greater than the thickness of optics module, the upper surface that just so enables the spacing retaining ring of first order plays bearing liquid crystal display panel's effect.

As another preferred embodiment of the present invention, the projection profile of the limiting inner contour surface of the first-stage limiting retainer ring for limiting the optical module in the limiting retainer ring is an asymmetric figure, and by this asymmetric design, the optical module can be positioned, and the optical module is prevented from being reversely assembled during assembly, and this feature can be seen from fig. 3.

Backlight module, include at least: the light guide plate comprises a light guide plate and an optical film group arranged on the light emergent side of the light guide plate; the light guide plate is the light guide plate described in any of the above embodiments.

As shown in fig. 2 and fig. 3, the liquid crystal display of the present invention includes: liquid crystal display panel 2, backlight module and metal frame 1, wherein, the backlight module includes: a back plate 5, a light source 6 arranged on the back plate 5, a light guide plate 4 and an optical module 3. The light guide plate 4 is the light guide plate described in any of the above embodiments.

In an embodiment, as shown in fig. 2 and fig. 3, the light guide plate of the liquid crystal display of this embodiment is provided with a limit stop ring for limiting the optical module 3 and the liquid crystal display panel 2. The limiting retainer ring comprises two stages of limiting retainer rings, and the two stages of limiting retainer rings form a ladder shape; the distance from the limiting inner profile surface of the first-stage limiting retainer ring at the bottom end to the center of the light-emitting side end face of the light guide plate is smaller than the distance from the limiting inner profile surface of the second-stage limiting retainer ring at the top end to the center of the light-emitting side end face of the light guide plate. Therefore, the upper surface of the second-stage limiting retainer ring can be used as a bearing plane of the liquid crystal display panel, and a frame in the prior art is replaced. In addition, as can be seen from fig. 3, the projection profile of the position-limiting inner profile surface of the position-limiting retainer ring for limiting the first-stage position-limiting retainer ring of the optical module 3 according to this embodiment is an asymmetric figure, and by this asymmetric design, the optical module can be positioned, and the optical module is prevented from being inversely installed during assembly.

It can be seen from the figure that, after the light guide plate is adopted, the frame used in the prior art can be removed from the liquid crystal display, the thickness of the liquid crystal display is greatly reduced, the weight is lightened, and the cost is effectively saved.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The light guide plate is characterized in that limiting check rings used for limiting an optical module and/or a liquid crystal display panel are arranged at the peripheral edges of the light emergent side of the light guide plate.

2. The light guide plate according to claim 1, wherein the limit stop comprises two stages of limit stops, the two stages of limit stops being formed in a stepped shape; wherein,

3. The light guide plate according to claim 2, wherein the projection profile of the position-limiting inner profile surface of the first-stage position-limiting retainer ring is an asymmetric pattern.

4. The light guide plate according to claim 2, wherein the height of the first-stage retainer ring is greater than the thickness of the optical module.

5. A backlight module at least comprises: the light guide plate comprises a light guide plate and an optical film group arranged on the light emergent side of the light guide plate; characterized in that the light guide plate is the light guide plate with the structure of any one of claims 1 to 4.

6. A liquid crystal display comprising at least: the liquid crystal display panel and the backlight module, wherein the backlight module light guide plate is the backlight module described in claim 5.