CN104728683B - A kind of integral type back light source structure and liquid crystal display device - Google Patents

Abstract

The invention relates to the technical field of liquid crystal display, in particular to an integrated backlight source structure. The integrated backlight structure includes a backplane, a reflector, a light guide plate, and a plastic frame. The plastic frame is integrated, which can save mold costs and reduce the cost of backlight components. At the same time, when assembling the backlight structure, it can also reduce one station and improve assembly efficiency.

Description

An integrated backlight structure and liquid crystal display device

technical field

The invention relates to the technical field of liquid crystal display, in particular to an integrated backlight source structure and a liquid crystal display device.

Background technique

At present, in the backlight part of the existing liquid crystal display device, as shown in Figure 1 and Figure 2, the light guide plate 2 and the plastic frame 1 above the back plate 3 are two independent parts, which need to be independently manufactured, and the plastic frame uses injection molding technology. Molds need to be opened, and LGP (Light Guide Plate) generally uses printing or mold injection molding, and the cost of molds is high; during assembly, two parts need to be assembled separately, and materials also need to be managed by two parts, which leads to low assembly efficiency and high management costs.

Therefore, to address the above shortcomings, the present invention provides an integrated backlight structure and a liquid crystal display device.

Contents of the invention

(1) Technical problems to be solved

The object of the present invention is to provide an integrated backlight structure and liquid crystal display device to save mold costs, reduce backlight component costs, and improve assembly efficiency.

(2) Technical solution

In order to solve the above technical problems, the present invention provides an integrated backlight structure on the one hand, which includes a back plate, a reflector, a light guide plate and a plastic frame, the side of the back plate is engaged with the plastic frame, the light guide plate and the plastic frame The frame is integrally formed, the light guide plate is located above the back plate, and the reflection sheet is arranged between the light guide plate and the back plate.

Wherein, the light guide plate and the plastic frame are made of polymethyl methacrylate.

Wherein, the light guide plate and the plastic frame are integrally injection molded.

Wherein, there is an adhesive tape for bonding the liquid crystal panel on the plastic frame.

Wherein, the plastic frame has a protrusion structure extending downward, and the protrusion structure is engaged with the side of the back plate.

Wherein, the bottom of the protrusion structure is provided with a first groove to engage with the side of the back plate.

Wherein, the side of the back plate has a back plate groove to provide a space for placing the light source; the connection between the bump structure and the light guide plate has a second groove, and the second groove is opposite to the back plate groove set up.

Wherein, there is a protrusion on the position of the plastic frame engaging with the side of the back plate, and a locking hole is opened at a position corresponding to the protrusion on the side of the back plate.

Another aspect of the present invention provides a liquid crystal display device, which includes a liquid crystal panel and the above-mentioned integrated backlight structure.

Wherein, an optical film is further arranged between the liquid crystal panel and the light guide plate.

(3) Beneficial effects

The above-mentioned technical solution of the present invention has the following advantages: In the integrated backlight structure provided by the present invention, the light guide plate and the plastic frame are integrally formed, and the light guide plate mold with the plastic frame structure is directly produced during the production of the light guide plate mold, and the processed light guide plate The light board and the plastic frame are integrated, which can save mold costs and reduce the cost of backlight components. At the same time, it can also reduce one station when assembling the backlight structure and improve assembly efficiency.

Description of drawings

FIG. 1 is a schematic diagram of a conventional backlight structure in the prior art;

Fig. 2 is a schematic diagram of the cooperation relationship between the plastic frame, the light guide plate and the back plate in the prior art;

Fig. 3 is a schematic diagram of the structure of the integrated backlight source of the present invention;

FIG. 4 is a structural schematic diagram of the assembly of the integrated backlight structure and the liquid crystal panel of the present invention.

In the figure, 1: plastic frame; 2: light guide plate; 3: back plate; 4: adhesive tape; 5: liquid crystal panel; 6: reflector; 101: bump structure; 102: second groove; 301: back plate concave groove.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "above", "upper", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention.

As shown in Figure 3, an integrated backlight structure provided by the present invention includes a backplane 3, a reflector 6, a light guide plate 2 and a plastic frame 1, the side of the backplane 3 is engaged with the plastic frame 1, and the light guide plate 2 and the plastic frame 1 are integrally formed, the light guide plate 2 is located above the back plate 3 , and the reflection sheet 6 is arranged between the light guide plate 2 and the back plate 3 .

In the above-mentioned embodiment, the light guide plate 2 and the plastic frame 1 are integrally formed, and the mold of the light guide plate 2 with the structure of the plastic frame 1 is directly produced when the light guide plate 2 mold is made, and the processed light guide plate 2 and the plastic frame 1 are integrated, which can save The mold cost can reduce the cost of backlight parts, and at the same time, one station can be reduced when the backlight structure is assembled, and the assembly efficiency can be improved.

Specifically, the material of the light guide plate 2 and the plastic frame 1 is polymethyl methacrylate. This material is the one with the best texture and relatively reasonable price among the transparent materials synthesized so far. At the same time, this material has dielectric properties, which can meet the functional requirements of the light guide plate 2 and the plastic frame 1 at the same time.

Preferably, the light guide plate 2 and the plastic frame 1 are integrally injection molded. The method of injection molding is simple and effective, and the processing is convenient.

Generally, there is an adhesive tape for bonding the liquid crystal panel 5 on the plastic frame 1. As shown in FIG. Bonding, adhesive tapes are also arranged at corresponding positions on the plastic frame 1 integrally formed with the light guide plate 2 in the present invention.

As shown in Figure 3, the plastic frame has a downwardly extending bump structure 101, and the bump structure 101 is engaged with the side of the backboard; specifically, the bottom of the bump structure 101 is opened There is a first groove to engage with the side of the backboard.

Further, the side of the back plate has a back plate groove 301 to provide a space for placing the light source; the connection between the bump structure 101 and the light guide plate has a second groove 102, and the second groove 102 is connected to the light guide plate. The back plate groove 301 is arranged opposite to each other. While saving material, it can also play the same role as the back plate groove 301, that is, to facilitate the placement of the light source.

Preferably, there is a protrusion on the side of the plastic frame 1 where it engages with the side of the back plate 3 , and a locking hole is opened on the side of the back plate corresponding to the protrusion.

As shown in FIG. 4 , the liquid crystal display device provided by another aspect of the present invention includes a liquid crystal panel 5 and the above-mentioned integrated backlight structure. Preferably, a prism film or diffuser is also arranged between the liquid crystal panel 5 and the light guide plate Optical films such as sheets. Because such a liquid crystal display device adopts the above-mentioned backlight structure, it can save mold costs and reduce the cost of backlight parts, and at the same time, it can also reduce one station during assembly and improve assembly efficiency.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made, these improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (7)

1. A kind of 1. integral type back light source structure, it is characterised in that：It includes backboard, reflector plate, light guide plate and glue frame, the side of backboard Side is fastened with glue frame, and light guide plate and glue frame are integrally formed, and light guide plate is located at the top of backboard, reflector plate be arranged on light guide plate and Between backboard；The glue frame has the projection cube structure extended downwardly, and the side of the projection cube structure and the backboard fastens, institute The bottom for stating projection cube structure offers the first groove, is fastened with the side with backboard, and the side of the backboard has backboard recessed Groove, to provide the space of light source placement；The junction of projection cube structure and light guide plate has the second groove, second groove with it is described Backboard groove is oppositely arranged.
2. 2. integral type back light source structure according to claim 1, it is characterised in that：The material of the light guide plate and glue frame is Polymethyl methacrylate.
3. 3. integral type back light source structure according to claim 2, it is characterised in that：The light guide plate and glue frame integrated injection molding Shaping.
4. 4. integral type back light source structure according to claim 3, it is characterised in that：Have in the glue frame and be used for binding liquid The adhesive tape of crystal panel.
5. 5. integral type back light source structure according to claim 1, it is characterised in that：In the glue frame with the side card of backboard The position of conjunction has a projection, and the position corresponding with the projection offers card hole on the side of backboard.
6. A kind of 6. liquid crystal display device, it is characterised in that：It includes liquid crystal panel and the one described in claim any one of 1-5 Formula back light source structure.
7. 7. liquid crystal display device according to claim 6, it is characterised in that：Also set between the liquid crystal panel and light guide plate It is equipped with blooming piece.