CN205176446U - Liquid crystal display device - Google Patents

Abstract

The utility model is applicable to the field of display technology, and provides a liquid crystal display device, which includes a backlight module and a liquid crystal display panel, and the liquid crystal display panel and the backlight module pass through liquid coated on the periphery of the liquid crystal display panel and/or backlight module The backlight module includes an optical structure layer and a glue frame arranged around the optical structure layer. The utility model adopts liquid light-shielding glue as the light-shielding structure and bonds the liquid crystal display panel and the backlight module, which eliminates the traditional light-shielding tape, and does not have to be limited by the influence of the light-shielding tape processing technology, its width can be narrower, and the liquid light-shielding adhesive Strong bonding strength, no risk of falling off, and will not easily lead to bonding failure when the width is too narrow like traditional light-shielding tapes. Therefore, the utility model can further reduce the frame width of the liquid crystal display device and improve its reliability.

Description

A liquid crystal display device

technical field

The utility model belongs to the field of display technology, in particular to a liquid crystal display device.

Background technique

With the development of liquid crystal display technology, people have higher and higher requirements for product appearance and visual experience, and the appearance of products is gradually developing towards narrow frame or no frame, as shown in Figure 1, among the existing small and medium-sized liquid crystal display devices, the backlight module 01 is the most The upper layer is provided with a light-shielding tape 02. The light-shielding tape 02 plays the role of preventing light leakage around and fixing the optical film. The liquid crystal display panel 03 and the backlight module 01 are bonded together through the light-shielding tape 02, and assembled into a liquid crystal display module. The light-shielding tape 02 The width of is one of the factors that affect the mod border width. In the prior art, the light-shielding tape 02 is cut and processed from raw materials into the desired width and shape, and its width cannot be too narrow, otherwise it cannot be cut. Currently, the minimum width of the cut is more than 0.6 mm. In addition, the narrower the shading tape, the smaller the bonding width between the shading tape and the optical film, the plastic frame, and the LCD panel, and the smaller the adhesive force. In the reliability test of the liquid crystal display module, it is easy to appear that the shading tape and the The separation of the backlight source or the panel makes it difficult for the liquid crystal display module to meet the reliability requirements.

Utility model content

The purpose of the utility model is to provide a liquid crystal display device, aiming at narrowing its frame width and meeting reliability requirements.

The utility model is achieved in this way, a liquid crystal display device, including a backlight module and a liquid crystal display panel, the liquid crystal display panel and the backlight module are bonded by liquid light-shielding glue coated on the periphery of the liquid crystal display panel and/or the backlight module, The above-mentioned backlight module includes an optical structure layer and a plastic frame arranged around the above-mentioned optical structure layer.

As the preferred technical solution of the utility model:

The width of the liquid light-shielding glue is less than 0.6mm.

The above-mentioned liquid light-shielding glue is coated on the periphery of the effective light-emitting area of the above-mentioned optical structure layer and the upper surface of the glue frame.

The liquid light-shielding glue coated around the effective light-emitting area of the above-mentioned optical structure layer and the liquid light-shielding glue coated on the upper surface of the glue frame are connected as one or separated from each other.

The above-mentioned liquid light-shielding glue is coated on the periphery of the optical film of the liquid crystal display panel closest to the backlight module.

The above-mentioned optical film is a polarizer.

The liquid light-shielding glue is coated around the effective light-emitting area of the backlight module, the upper surface of the glue frame, and the periphery of the optical film of the liquid crystal display panel closest to the backlight module.

The above-mentioned liquid light-shielding glue is coated on part of the upper surface of the glue frame.

The above-mentioned liquid light-shielding glue is coated on the part of the upper surface of the glue frame close to the above-mentioned backlight module.

The above-mentioned liquid light-shielding glue is coated along the closed rectangular frame, or only along one side, two sides or three sides of the rectangular frame.

The liquid light-shielding glue mentioned above is a non-transparent liquid light-shielding glue or a translucent liquid light-shielding glue.

The above-mentioned liquid crystal display device further includes a backboard, and the above-mentioned backlight module is fixed on the backboard.

The above-mentioned liquid light-shielding glue is acrylic glue, acrylic glue or UV glue.

The viscosity of the above-mentioned liquid light-shielding glue for dispensing is 6000-10000 mPa.s, and the viscosity of the above-mentioned liquid light-shielding glue for spraying is 600-1000 mPa.s.

The liquid light-shielding glue mentioned above is an insulating liquid light-shielding glue or a conductive liquid light-shielding glue.

The utility model adopts liquid light-shielding glue as the light-shielding structure, and uses it to bond the liquid crystal display panel and the backlight module. The adhesive force is strong, there is no risk of falling off, and it will not easily lead to bonding failure when the width is too narrow like the traditional light-shielding tape. Therefore, the utility model can effectively reduce the frame width of the liquid crystal display device and improve its reliability.

Description of drawings

FIG. 1 is a schematic structural view of a liquid crystal display device in the prior art;

2 is a schematic structural view of a liquid crystal display device provided by the first embodiment of the present invention;

Fig. 3 is a side view structural schematic diagram of the backlight module provided by the first embodiment of the present invention;

FIG. 4 is a schematic top view of the backlight module provided by the first embodiment of the present invention;

FIG. 5 is a schematic side view of the backlight module provided by the second embodiment of the present invention;

FIG. 6 is a schematic top view of the backlight module provided by the second embodiment of the present invention;

Fig. 7 is a schematic side view structure diagram of a liquid crystal display panel provided by the third embodiment of the present invention;

8 is a schematic diagram of a liquid crystal display panel and a backlight module provided by the fourth embodiment of the present invention;

FIG. 9 is a schematic side view of the backlight module provided by the fifth embodiment of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The concrete realization of the present utility model is described in detail below in conjunction with specific embodiment:

Embodiment one:

Please refer to FIGS. 2 to 4. Embodiments of the present utility model provide a liquid crystal display device, including a backlight module 1 and a liquid crystal display panel 2. The backlight module 1 includes an optical structure layer, such as a light guide plate 11 and an optical film 12. The optical The structural layer is used to conduct the light emitted by the light source and output it uniformly to the liquid crystal display panel 2 , and a plastic frame 13 for supporting the liquid crystal display panel 2 is also provided around the optical structural layer. The liquid crystal display panel 2 and the backlight module 1 are bonded by a liquid light-shielding glue 3, and the liquid light-shielding glue 3 is located outside the visible area of the liquid crystal display panel 2 and outside the effective light-emitting area of the backlight module 1 to ensure that it does not affect the display. The coating width of the liquid light-shielding adhesive 3 is not restricted by the process unlike traditional light-shielding tapes, and its width can be smaller than that of traditional light-shielding tapes, usually less than 0.6mm. Specifically, the liquid light-shielding glue 3 can be coated around the effective light-emitting area of the backlight module 1 or around the liquid crystal display panel 2 , or coated on the two areas at the same time.

In this embodiment, the liquid light-shielding adhesive 3 is used to replace the traditional light-shielding tape. It does not have to be limited by the processing technology of the light-shielding tape. Its width can be narrower, and the liquid light-shielding glue has strong adhesion and no risk of falling off, unlike the traditional light-shielding tape. If the width is too narrow, it is likely to lead to bonding failure. Therefore, using liquid light-shielding glue for light-shielding and bonding the liquid crystal display panel can further compress the frame width of the liquid crystal display device and improve its reliability.

Further, as shown in Figures 2 and 3, the liquid light-shielding glue 3 can be coated around the effective light-emitting area of the optical structure layer and the upper surface of the glue frame 13, and then the liquid crystal display panel 2 is pasted on the backlight module 1, The backlight module 1 and the liquid crystal display panel 2 are bonded together. As a kind of coating method of this embodiment, as shown in Fig. 3 and Fig. 4, liquid light-shielding glue 3 can be coated around the effective light-emitting area of the optical structure layer and the upper surface of the glue frame 13 respectively. The liquid light-shielding glue 3 is separated from each other.

Embodiment two:

As shown in Fig. 5 and Fig. 6, in the present embodiment, the liquid light-shielding glue 3 is also coated on the periphery of the effective light-emitting area of the optical structure layer and the upper surface of the glue frame 13. During the manufacturing process, the liquid light-shielding glue 3 is coated around the effective light-emitting area of the optical structure layer and the upper surface of the glue frame 13 at the same time. At this time, the liquid light-shielding glue 3 in these two areas is connected as a whole.

Embodiment three:

Referring to FIG. 7 , in this embodiment, a liquid light-shielding glue 3 can be coated on the periphery of the optical film 21 of the liquid crystal display panel 2 closest to the backlight module 1 , and the liquid light-shielding glue 3 is located between the visible area of the liquid crystal display panel 2 In the peripheral area, the liquid crystal display panel 2 and the backlight module 1 are bonded together, and the width of the liquid light-shielding glue 3 is required not to block the effective light-emitting area of the backlight module 1 . The optical film 21 may specifically be the polarizer 21 on the surface of the TFT substrate 22 of the liquid crystal display panel 2 .

Embodiment four:

Further referring to FIG. 8 , in this embodiment, a liquid light-shielding liquid can be coated around the effective light-emitting area of the backlight module 1 and the upper surface of the plastic frame 13 and the periphery of the optical film 21 of the liquid crystal display panel 2 closest to the backlight module 1. Glue 3, and then stick the liquid crystal display panel 2 and the backlight module 1 together.

Embodiment five:

As shown in FIG. 9 , the liquid light-shielding glue 3 can also be coated only on part of the upper surface of the glue frame 13 , and then the liquid crystal display panel 2 is glued to the glue frame 13 through the liquid light-shielding glue 3 , and then attached to the backlight module 1 . At this time, the liquid light-shielding glue 3 is preferably coated on the part of the upper surface of the glue frame 13 close to the backlight module 1 .

In the utility model, the liquid light-shielding glue 3 is used as the adhesive between the light-shielding structure and the liquid crystal display panel 2 and the backlight module 1, and its shape can be a rectangular frame shape, that is, along its bearing surface (such as the liquid crystal display panel 2 The periphery of the optical film 21 , the light output surface of the backlight module 1 and the plastic frame 13 ) is coated in a rectangular shape, as shown in FIGS. 3 and 5 . Alternatively, only one side, two sides or three sides can be coated, on the premise that light leakage can be prevented without affecting the display, and at the same time, the liquid crystal display panel 2 and the backlight module 1 can be well bonded.

The liquid light-shielding glue 3 used in this embodiment can be a non-transparent liquid light-shielding glue or a translucent liquid light-shielding glue. Specifically, it may be black liquid shading glue, white liquid shading glue, gray liquid shading glue, and the like. In terms of conductivity, the liquid light-shielding glue 3 can be an insulating liquid light-shielding glue, or a conductive liquid light-shielding glue.

Further, the liquid light-shielding glue 3 can be acrylic glue, acrylic glue or UV glue. If spot coating is adopted, the viscosity of the liquid light-shielding glue 3 can be slightly higher, preferably 6000-10000 mPa.s; if spraying is used, the viscosity of the liquid light-shielding glue 3 should be smaller, preferably 600-1000 mPa.s. Of course, the viscosity of the liquid light-shielding glue depends on the spot coating or spraying equipment and the bonding effect. The above parameters are an optional range, but not limited to this range.

It can be understood that the liquid crystal display device provided by the present invention also includes a backplane 4. As shown in FIG. 2, the backplane 4 can carry structures such as the backlight module 1, protect the internal structure and provide a beautiful appearance.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (15)

1. a liquid crystal indicator, comprise backlight module and display panels, it is characterized in that, described display panels is mutually bonding by the liquid shading glue being coated on described display panels and/or backlight module periphery with backlight module, and described backlight module comprises optical structure layers and is arranged on the glue frame around described optical structure layers.

2. liquid crystal indicator as claimed in claim 1, it is characterized in that, the width of described liquid shading glue is less than 0.6mm.

3. liquid crystal indicator as claimed in claim 1, is characterized in that, around effective light-emitting zone that described liquid shading glue is coated on described optical structure layers and the upper surface of described glue frame.

4. liquid crystal indicator as claimed in claim 3, is characterized in that, the liquid shading glue around the effective light-emitting zone being coated on described optical structure layers and the liquid shading glue being coated on described glue frame upper surface connect as one or separated from one another.

5. liquid crystal indicator as claimed in claim 1, it is characterized in that, described liquid shading glue is coated on the periphery of described display panels near the blooming piece of described backlight module.

6. liquid crystal indicator as claimed in claim 5, it is characterized in that, described blooming piece is polaroid.

7. liquid crystal indicator as claimed in claim 1, it is characterized in that, around effective light-emitting zone that described liquid shading glue is coated on described backlight module and the upper surface of described glue frame and described display panels near the periphery of the blooming piece of described backlight module.

8. liquid crystal indicator as claimed in claim 1, it is characterized in that, described liquid shading glue is coated on the portion of upper surface of described glue frame.

9. liquid crystal indicator as claimed in claim 8, it is characterized in that, described liquid shading glue is coated on the portion of upper surface of described glue frame near described backlight module.

10. the liquid crystal indicator as described in any one of claim 1 to 9, is characterized in that, described liquid shading glue along the coating of closed rectangle frame or only along this rectangle frame, both sides or the coating of three limits.

11. liquid crystal indicators as described in any one of claim 1 to 9, is characterized in that, described liquid shading glue is nontransparent liquid shading glue or is translucent liquid shading glue.

12. liquid crystal indicators as described in any one of claim 1 to 9, it is characterized in that, described liquid crystal indicator also comprises backboard, and described backlight module is fixed on described backboard.

13. liquid crystal indicators as described in any one of claim 1 to 9, it is characterized in that, described liquid shading glue is acrylic acid system glue, acrylic glue system or UV glue.

14. liquid crystal indicators as claimed in claim 13, it is characterized in that, the spot printing viscosity of described liquid shading glue is 6000 ~ 10000mPa.s, the spraying viscosity of described liquid shading glue is 600 ~ 1000mPa.s.

15. liquid crystal indicators as described in any one of claim 1 to 9, is characterized in that, described liquid shading glue is the liquid shading glue of insulation or the liquid shading glue for conduction.