CN211603789U

CN211603789U - Full-lamination backlight module

Info

Publication number: CN211603789U
Application number: CN202020007464.6U
Authority: CN
Inventors: 陈钟栩
Original assignee: Shenzhen Honghe Innovation Information Technology Co Ltd
Current assignee: Shenzhen Honghe Innovation Information Technology Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-09-29
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a full laminating backlight unit, including frame subassembly and range upon range of toughened glass, liquid crystal glazing, optics diaphragm, the diffuser plate that sets up in proper order, toughened glass is fixed in the open end of frame subassembly, toughened glass with between the liquid crystal glazing with between the optics diaphragm with realize the laminating through transparent optical cement layer respectively between the diffuser plate, shortened production cycle, reduced manufacturing cost, compressed complete machine thickness simultaneously, promoted complete machine screen and accounted for the ratio.

Description

Full-lamination backlight module

Technical Field

The utility model relates to a display device technical field, in particular to full laminating backlight unit.

Background

The backlight module is one of the key components of the liquid crystal display panel. The existing backlight module has a fixed structure, and generally has the technical defects of long production period, high production cost, large thickness of the whole machine and low screen occupation ratio, and the prior art is difficult to solve.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a full laminating backlight unit shortens production cycle, reduction in production cost, compresses complete machine thickness simultaneously, promotes the complete machine screen and accounts for the ratio.

The utility model provides a full laminating backlight unit, including frame subassembly and range upon range of toughened glass, liquid crystal glazing, optics diaphragm, the diffuser plate that sets up in proper order, toughened glass is fixed in the open end of frame subassembly, toughened glass with between the liquid crystal glazing with between the optics diaphragm with realize the laminating through transparent optical cement layer respectively between the diffuser plate.

In some optional embodiments, a side surface of the diffusion plate away from the optical film sheet is opposite to and not in contact with the outer frame component.

In some optional embodiments, the outer frame assembly comprises a back plate and a front frame which are connected with each other, the outer edge of the tempered glass is pressed and fastened by the back plate and the front frame from two sides, and one side surface of the diffusion plate, which is far away from the optical membrane, is opposite to the back plate and is not in contact with the back plate.

In some optional embodiments, a connecting groove is formed on one side of the front frame, and the outer edge of the back plate is embedded in the connecting groove.

In some alternative embodiments, the front frame has a PCB-embedding groove for embedding and mounting a PCB therein.

In some optional embodiments, the front frame has a hollow structure to form a hollow inner cavity, and opposite wall surfaces of the hollow inner cavity are respectively provided with the PCB embedding grooves.

In some optional embodiments, the back plate has an abutting portion abutting against a side surface of the tempered glass facing the back plate, and the abutting portion is located in a projection range of the front frame along the thickness direction of the full-lamination backlight module.

In some alternative embodiments, the abutment has a Z-shaped configuration.

In some optional embodiments, the transparent optical adhesive layer is a transparent liquid glue layer.

In some optional embodiments, the thickness of the transparent optical adhesive layer is 0.8-1.2 mm.

The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:

the laminating is realized between the toughened glass and the liquid crystal glass, between the liquid crystal glass and the optical diaphragm and between the optical diaphragm and the diffusion plate respectively through the transparent optical glue layers, so that the toughened glass, the liquid crystal glass, the optical diaphragm and the diffusion plate are sequentially laminated to form a multilayer laminating structure, and further the toughened glass is fixed at the opening end of the outer frame component;

compare in need adopt center and liquid crystal glazing apron to carry out the traditional structure fixed to liquid crystal glazing, optics diaphragm, diffuser plate, the embodiment of the utility model provides a center and liquid crystal glazing apron have been cancelled. On one hand, a middle frame die and a liquid crystal glass cover plate die are not needed, the production and assembly steps are simplified, the production period is effectively shortened, the production cost is reduced, and the production efficiency is greatly improved; on the other hand, the whole thickness is effectively compressed, the whole screen occupation ratio is improved, and the whole exposed surface of the toughened glass is effectively expanded in the display area.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a partial schematic view of a cross-sectional structure of a full-lamination backlight module according to an embodiment of the present invention;

fig. 2 is a partial schematic view of the full-lamination backlight module shown in fig. 1.

Description of the main element symbols:

11-back plate, 111-abutting part, 12-front frame, 121-connecting groove, 122-PCB embedded groove, 123-hollow inner cavity, 2-toughened glass, 3-liquid crystal glass, 4-optical membrane, 5-diffusion plate and 6-transparent optical glue layer.

Detailed Description

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, the present embodiment discloses a specific structure of a full-lamination backlight module, which includes an outer frame assembly, and a tempered glass 2, a liquid crystal glass 3, an optical film 4, and a diffusion plate 5 stacked in sequence, and the middle frame and the liquid crystal glass cover plate are omitted. It is understood that the inner surface of the frame assembly is further provided with a backlight (e.g. an LED backlight, not shown).

The bonding is realized between the toughened glass 2 and the liquid crystal glass 3, between the liquid crystal glass 3 and the optical film 4, and between the optical film 4 and the diffusion plate 5 through the transparent optical adhesive layers 6 respectively. In other words, the tempered glass 2 and the liquid crystal glass 3 are bonded through the transparent optical adhesive layer 6, the liquid crystal glass 3 and the optical film 4 are bonded through the transparent optical adhesive layer 6, a multi-layer bonding structure is formed, and all the layers are connected and fixed through a bonding mode without any fixing frame.

And then, toughened glass 2 is fixed in the open end of the outer frame assembly and forms the cover to this open end, make the above-mentioned multilayer laminating adhesive structure fix in the outer frame assembly, the overall structure of the backlight unit of full lamination is from this shaping.

It should be noted that, the inventor has found that the conventional backlight module has a cured structure, i.e. both the middle frame and the liquid crystal glass cover plate are provided. The middle frame is fixed on the back plate of the traditional backlight module, and the optical diaphragm and the diffusion plate of the backlight module are tightly propped against the surface of the back plate, so that the fixing purpose is realized. Similarly, the liquid crystal glass cover plate is fixed on one side of the middle frame, which is far away from the back plate, and the liquid crystal glass of the backlight module is abutted against the surface of the middle frame, so that the fixing purpose is realized.

Further research finds that the existence of the middle frame and the liquid crystal glass cover plate causes the following disadvantages: on the first hand, the liquid crystal display device occupies larger space, so that the upper limit of the size of the liquid crystal glass of the traditional backlight module is limited, the upper limit of the area of a visible area is reduced, and the size of a screen is restricted; in the second aspect, in order to realize shielding and masking of parts such as the middle frame and the like, black ink needs to be coated on the surface of the liquid crystal glass cover plate, so that the invalid display area is greatly increased, and the screen ratio is severely restricted; in the third aspect, the thicknesses of the middle frame and the liquid crystal glass cover plate are increased, so that the thickness size of the whole machine is greatly increased, and the development trend of ultra-thinning is not met; in the fourth aspect, the middle frame and the liquid crystal glass cover plate are both produced by using special dies, so that the die cost is increased, the production cost is high, and the production time and the assembly process time of the middle frame and the liquid crystal glass cover plate exist, so that the production period of the backlight module is prolonged, and the production efficiency is reduced.

Based on the reasons found by the above studies to cause the drawbacks of the prior art, the inventors propose the foregoing configuration of the present embodiment, which achieves a targeted solution to the drawbacks of the prior art. Compared with the prior art, the technical scheme of the embodiment cancels the middle frame and the liquid crystal glass cover plate, so that the defects are overcome, the production cost is reduced on the one hand, the production and assembly processes are simplified on the other hand, the production efficiency is improved, the thickness of the whole machine is effectively compressed on the other hand, and the occupied ratio of an effective display area to the whole machine screen is effectively improved on the other hand.

Wherein, the transparent optical adhesive layer 6 is composed of transparent optical adhesive. Transparent optical glues commonly include solid glues and liquid glues. Exemplarily, the transparent optical adhesive layer 6 is a transparent liquid glue layer, and is composed of transparent liquid glue, and after bonding, certain fluidity and ideal surface tension are still maintained, so that the bonded object is prevented from being pulled and deformed, and the bonding smoothness between the layers of the multilayer bonding structure is ensured, thereby realizing the better bonding effect and display effect of the full-bonding backlight module. Conventionally, the transparent liquid glue type is, for example, OCR glue, and is optional. Exemplarily, the thickness of the transparent optical adhesive layer 6 is 0.8-1.2 mm, so that the thickness reduction effect related to thinning is ensured on one hand, and the reliability of bonding and bonding is ensured on the other hand.

Exemplarily, one side surface of the diffusion plate 5 away from the optical film 4 is opposite to and does not contact with the outer frame assembly, so as to ensure that the aforementioned multi-layer bonding structure is fixed to the outer frame assembly only through the tempered glass 2, and a sufficient gap is reserved between the diffusion plate 5 and the outer frame assembly to prevent assembly interference.

Exemplarily, the outer frame assembly comprises a back plate 11 and a front frame 12 which are connected with each other, and the outer edge of the tempered glass 2 is pressed and fastened from two sides by the back plate 11 and the front frame 12. In other words, the outer edge of one side surface of the tempered glass 2 is attached to the back plate 11, the outer edge of the other side surface of the tempered glass 2 is attached to the front frame 12, and the tempered glass 2 is fixed by the pressing action of the back plate 11 and the front frame 12. It can be understood that, under this configuration, one side surface of the diffusion plate 5 away from the optical film 4 and the back plate 11 are kept opposite and not in contact with each other, so as to ensure that the two side surfaces of the tempered glass 2 are respectively attached and abutted to the back plate 11 and the front frame 12, thereby preventing assembly interference. Exemplarily, flexible buffer members (such as silica gel, foam and the like) are respectively arranged between the back plate 11 and the tempered glass 2 and between the front frame 12 and the tempered glass 2, so that scratching and collision damage are prevented, and the safety of the tempered glass 2 is ensured.

Exemplarily, a connecting groove 121 is formed in one side of the front frame 12, and the outer edge of the back plate 11 is embedded in the connecting groove 121, so that the surface of the front frame 12 away from the back plate 11 is a front appearance surface of the full-lamination backlight module, and the front appearance surface has no seam, and is flat and smooth in appearance and good in appearance effect.

It is understood that the back plate 11 and the front frame 12 can be made of different materials, such as plastic, metal (e.g., aluminum profile), etc. It is understood that the front frame 12 may be an integrally formed annular frame (e.g., a square frame), or may be formed by separately forming and splicing a plurality of frame strips.

Exemplarily, the front frame 12 has a PCB embedding groove 122 for embedding and mounting a PCB therein, so as to realize a hidden type quick embedding. Exemplarily, the front frame 12 has a hollow structure to form a hollow cavity 123, and opposite wall surfaces of the hollow cavity 123 are respectively provided with PCB embedding grooves 122, so that the PCBA can be accommodated in the hollow cavity 123. For example, one end of the PCBA is inserted into the PCB insertion groove 122 on one wall surface of the hollow cavity 123, and the other end is inserted into the PCB insertion groove 122 on the wall surface opposite to the wall surface, so that the components on the PCBA are accommodated in the hollow cavity 123, which is convenient for installation and good in protection.

Exemplarily, the back plate 11 has an abutting portion 111, and the abutting portion 111 abuts on a side surface of the tempered glass 2 facing the back plate 11. Exemplarily, a flexible buffer (such as silica gel, foam, etc.) is arranged between the abutting portion 111 and the tempered glass 2, so as to prevent scratching and collision damage, and ensure the safety of the tempered glass 2.

Exemplarily, the abutting portion 111 is located in a projection range of the front frame 12 along the thickness direction of the full-lamination backlight module, so that the abutting portion 111 is shielded by the front frame 12 and is not exposed, and thus, the shielding by using printing ink is not needed, and the maximization of the visible range is ensured. Illustratively, the abutment 111 has a Z-shaped configuration, i.e., a cross-section that is Z-shaped, and may be bent or cast. It is understood that the abutting portion 111 may be integrally formed with the back plate 11, or may be separately formed and then fixedly mounted on the back plate 11.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The full-lamination backlight module is characterized by comprising an outer frame assembly, and toughened glass, liquid crystal glass, an optical membrane and a diffusion plate which are sequentially stacked, wherein the toughened glass is fixed at an opening end of the outer frame assembly, and the lamination is realized between the toughened glass and the liquid crystal glass, between the liquid crystal glass and the optical membrane and between the optical membrane and the diffusion plate through transparent optical glue layers respectively.

2. The full-lamination backlight module of claim 1, wherein a surface of the diffusion plate away from the optical film is opposite to and not in contact with the outer frame assembly.

3. The full-lamination backlight module of claim 1, wherein the outer frame assembly comprises a back plate and a front frame connected to each other, the outer edge of the tempered glass is pressed and fastened by the back plate and the front frame from two sides, and a surface of the diffusion plate away from the optical film is opposite to the back plate and does not contact with the back plate.

4. The full-lamination backlight module according to claim 3, wherein a connecting groove is formed on a side surface of the front frame, and an outer edge of the back plate is embedded in the connecting groove.

5. The full-lamination backlight module according to claim 3, wherein the front frame has a PCB-embedded groove for embedding and installing a PCB therein.

6. The full-lamination backlight module of claim 5, wherein the front frame has a hollow structure to form a hollow cavity, and opposite walls of the hollow cavity are respectively provided with the PCB embedding grooves.

7. The full-lamination backlight module according to claim 3, wherein the back plate has an abutting portion abutting against a side surface of the tempered glass facing the back plate, and the abutting portion is located within a projection range of the front frame along a thickness direction of the full-lamination backlight module.

8. The full-lamination backlight module according to claim 7, wherein the abutting portion has a Z-shaped structure.

9. The full-lamination backlight module of claim 1, wherein the transparent optical adhesive layer is a transparent liquid glue layer.

10. The full-lamination backlight module according to any one of claims 1 to 9, wherein the thickness of the transparent optical adhesive layer is 0.8 to 1.2 mm.