CN217718385U

CN217718385U - Backlight module display device with light entering from two sides

Info

Publication number: CN217718385U
Application number: CN202222010773.0U
Authority: CN
Inventors: 何凡; 柯宪和; 荣喜山; 蔡校余
Original assignee: Dongguan Yihui Photoelectric Technology Co ltd
Current assignee: Dongguan Yihui Photoelectric Technology Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-11-01
Anticipated expiration: 2032-08-01

Abstract

The utility model belongs to the technical field of LCD, especially, relate to a backlight unit display device of bilateral income light, include: the supporting component comprises a rubber frame and a rear frame accommodated in the rubber frame; the light guide assembly comprises a light guide plate, an upper light bar and a lower light bar, the light guide plate is accommodated between the rubber frame and the rear frame, and the upper light bar and the lower light bar are respectively arranged on two opposite sides of the light guide plate; the light intensifying component is arranged between the rubber frame and the light guide plate; and the display component is accommodated at one end of the rubber frame back to the rear frame. The backlight module display device with light entering from two sides is provided with the upper light bar and the lower light bar on the light guide plate in the light guide assembly respectively, so that the conversion from a point light source to a vertical plane light source is efficiently carried out in the light guide plate, and the display brightness and the uniformity of the backlight module display device are further improved.

Description

Backlight module display device with light entering from two sides

Technical Field

The present disclosure relates to liquid crystal displays, and more particularly, to a backlight module display device with dual-edge light.

Background

Compared with a transistor display, the liquid crystal display has the advantages of low working voltage, low energy consumption, light weight, thinness and the like, so that the liquid crystal display is widely applied to different fields. The liquid crystal display mainly provides a light source through a backlight module device.

The existing backlight module device generally adopts a single light emitting source to form a single-side light incident structure, but the single-side light incident structure provides a surface light source for the liquid crystal display glass with low brightness and is easy to cause uneven luminosity.

Therefore, it is highly desirable to provide a backlight module display device with high brightness and high uniformity.

It is noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure and therefore may include information that does not form the prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

In view of at least one of the above technical problems, the present application provides a backlight module display device with dual-edge light incidence, which solves the problems that the conventional backlight module display device generally adopts a single light emitting source to form a single-edge light incidence structure, but the single-edge light incidence structure provides a surface light source for liquid crystal display glass with low brightness and easily causes uneven luminosity.

An embodiment of a first aspect of the present application provides a backlight module display device with dual-edge light, including:

the supporting component comprises a rubber frame and a rear frame accommodated in the rubber frame;

the light guide assembly comprises a light guide plate, an upper light bar and a lower light bar, the light guide plate is accommodated between the rubber frame and the rear frame, and the upper light bar and the lower light bar are respectively arranged on two opposite sides of the light guide plate;

the light intensifying component is arranged between the rubber frame and the light guide plate;

the display component is accommodated at one end of the rubber frame back to the rear frame.

The embodiment of the application has the following technical effects: the backlight module display device with light entering from two sides is provided with the upper light bar and the lower light bar on the light guide plate in the light guide assembly respectively, so that the conversion from a point light source to a vertical plane light source is efficiently carried out in the light guide plate, and the display brightness and the uniformity of the backlight module display device are further improved.

In an implementation mode, a first connecting belt is arranged on the upper lamp strip and extends towards the rear frame, a second connecting belt is arranged on the lower lamp strip and extends towards the rear frame, the end portions of the first connecting belt and the second connecting belt are parallel to the end face of the rear frame, and gaps exist between the first connecting belt and the end face of the rear frame and between the second connecting belt and the end face of the rear frame respectively.

In one implementation, the plastic frame has a first receiving groove and a second receiving groove that are mutually communicated, the rear frame is received in the second receiving groove, and the display assembly is received in the first receiving groove.

In one implementation mode, the rear frame is provided with a third accommodating groove towards one end of the rubber frame, and the light guide assembly and the light intensifying assembly are located in the third accommodating groove.

In one implementation mode, a first clamping groove communicated with the second accommodating groove penetrates through the outer side wall of the rubber frame;

bend to gluing the frame on the after-frame and be formed with first frame that encloses, first frame that encloses is around forming the third holding tank, and first lateral wall that encloses the frame is provided with first fixture block, and first fixture block forms the joint with the cooperation of first draw-in groove.

In one implementation, a heat dissipation plate is disposed on the inner end surface of the rear frame, and a reflective sheet is disposed between the heat dissipation plate and the light guide plate.

In one implementation mode, the light intensifying assembly comprises a lower diffusion sheet, a lower light intensifying sheet, an upper light intensifying sheet and an upper diffusion sheet which are sequentially arranged, the lower diffusion sheet is connected with the end face of the light guide plate, which is back to the rear frame, and the upper diffusion sheet is connected with the end face of the rubber frame, which is back to the rear frame.

In one implementation, the display assembly includes a liquid crystal display glass, and the liquid crystal display glass is accommodated at one end of the rubber frame, which faces away from the rear frame.

In one implementation, the edge of the liquid crystal display glass is connected with the rubber frame through a plurality of edge covering rubbers.

The present invention will be further explained with reference to the drawings and the embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is an exploded view of a support assembly, a light guide assembly and a light intensifying assembly;

FIG. 2 is a schematic structural view of the support assembly;

FIG. 3 is a schematic view of a first explosive structure of the support assembly;

FIG. 4 is a second exploded view of the support assembly;

FIG. 5 is a schematic structural diagram of a support assembly and a light guide assembly;

FIG. 6 is a schematic structural diagram of a backlight module display device with light incident from two sides;

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

As shown in fig. 1 to fig. 6, an embodiment of a first aspect of the present application provides a backlight module display device with dual-edge light, including:

the supporting assembly 100 comprises a rubber frame 110 and a rear frame 120 accommodated in the rubber frame 110;

the light guide assembly 200 includes a light guide plate 210, an upper light bar 220 and a lower light bar 230, the light guide plate 210 is accommodated between the rubber frame 110 and the rear frame 120, and the upper light bar 220 and the lower light bar 230 are respectively disposed on two opposite sides of the light guide plate 210;

a light intensifying assembly 300 disposed between the rubber frame 110 and the light guide plate 210;

the display module 400 is accommodated at an end of the rubber frame 110 opposite to the rear frame 120.

For example, the plastic frame 110 is mainly used for carrying the display module 400, and the plastic frame 110 is matched with the rear frame 120, so that the light guide module 200 and the light intensifying module 300 can be stably accommodated in the rear frame 120 and the plastic frame 110.

The light guide plate 210 is used for converting light sources emitted by the upper light bar 220 and the lower light bar 230, that is, converting a parallel point light source into a vertical area light source. The upper side and the lower side of the light guide plate 210 are respectively provided with the upper light bar 220 and the lower light bar 230, and light sources emitted by the upper light bar 220 and the lower light bar 230 can be rapidly transmitted to the inside of the light guide plate 210, so that the light emitting efficiency and the brightness of the light guide plate 210 are improved, and meanwhile, the uniformity of the light sources of the light guide plate 210 can also be improved. Compared with the prior backlight module display device with single-edge light incidence, the backlight module display device has higher light incidence efficiency and brightness.

The backlight module display device with light entering from two sides is provided with the upper light bar 220 and the lower light bar 230 on the light guide plate 210 in the light guide assembly 200 respectively, so that the point light source is converted into the vertical plane light source in the light guide plate 210 efficiently, and the display brightness and the uniformity of the backlight module display device are further improved.

As shown in fig. 1 to 6, a first connecting strip 221 extends from the upper light bar 220 to the rear frame 120, a second connecting strip 231 extends from the lower light bar 230 to the rear frame 120, ends of the first connecting strip 221 and the second connecting strip 231 are parallel to an end surface of the rear frame 120, and gaps exist between the first connecting strip 221 and the second connecting strip 231 and the end surface of the rear frame 120 respectively.

For example, the first connection strip 221 and the second connection strip 231 are electrically connected to an external power source, so as to provide power to the upper light bar 220 and the lower light bar 230. Gaps are formed between the end surfaces of the first connecting belt 221 and the second connecting belt 231 and the rear frame 120, so that the first connecting belt 221 and the second connecting belt 231 are spaced apart from the rear frame 120 to prevent the rear frame 120 from conducting electricity.

As shown in fig. 1 to 6, the rubber frame 110 has a first receiving groove 111 and a second receiving groove 112 that are communicated with each other, the rear frame 120 is received in the second receiving groove 112, and the display assembly 400 is received in the first receiving groove 111.

For example, the thickness of the first receiving groove 111 is smaller than that of the second receiving groove 112, mainly because the back frame 120, the light guide assembly 200 and the light intensifying assembly 300 are all received in the second receiving groove 112. The first receiving groove 111 can also perform a positioning function for the display module 400.

The second receiving groove 112 receives the rear frame 120 therein, and can position the rear frame 120.

In addition, an opening is formed in the center of the rubber frame 110, and the opening enables the first receiving groove 111 and the second receiving groove 112 to communicate with each other. The opening is used to transmit the vertical light source of the light guide plate 210 to the display module 400 through the light intensifying module 300.

As shown in fig. 1 to 6, one end of the back frame 120 facing the rubber frame 110 has a third receiving groove 121, and the light guide assembly 200 and the light intensifying assembly 300 are located in the third receiving groove 121.

Illustratively, the light guide assembly 200 and the light intensifying assembly 300 are accommodated in the third accommodating groove 121, so as to perform a fixed position function.

As shown in fig. 1 to 6, a first engaging groove 113 communicated with the second receiving groove 112 is formed on an outer side wall of the rubber frame 110 in a penetrating manner;

the rear frame 120 is bent towards the rubber frame 110 to form a first surrounding frame 122, the first surrounding frame 122 surrounds the third accommodating groove 121, a first clamping block 123 is arranged on the outer side wall of the first surrounding frame 122, and the first clamping block 123 is matched with the first clamping groove 113 to form clamping connection.

Exemplarily, the first clamping block 123 on the rear frame 120 is matched with the first clamping groove 113 on the rubber frame 110, so that the rear frame 120 and the rubber frame 110 form a clamping connection, and further, the connection stability of the rear frame and the rubber frame is improved. Moreover, the rear frame 120 is detachably connected to the rubber frame 110, so that the assembly and subsequent maintenance are facilitated, and the internal structure is replaced.

As shown in fig. 1 to 6, the inner end surface of the rear frame 120 is provided with a heat sink 500, and a reflective sheet 600 is provided between the heat sink 500 and the light guide plate 210.

Illustratively, the heat dissipation plate 500 is coupled to the rear frame 120 to facilitate heat generated by the light guide assembly 200 to be conducted and dissipated.

The reflective sheet 600 is to reflect the light emitted from the light guide plate 210.

As shown in fig. 1 to 6, the light intensifying assembly 300 includes a lower diffusion sheet 310, a lower light intensifying sheet 320, an upper light intensifying sheet 330 and an upper diffusion sheet 340, which are sequentially disposed, the lower diffusion sheet 310 is connected to an end surface of the light guide plate 210 opposite to the rear frame 120, and the upper diffusion sheet 340 is connected to an end surface of the rubber frame 110 facing the rear frame 120.

For example, the lower diffusion sheet 310 may be used to correct the direction of the light source converted by the light guide plate 210.

The lower light enhancement film 320 and the upper light enhancement film 330 are used for overlapping the scattered light source in a direction perpendicular to the lower light enhancement film 320 and the upper light enhancement film 330, so as to form light source overlapping gain.

The upper diffusion sheet 340 functions to protect the upper brightness enhancement sheet 330.

As shown in fig. 1 to 6, the display assembly 400 includes a liquid crystal display glass 410, and the liquid crystal display glass 410 is accommodated at an end of the rubber frame 110 opposite to the rear frame 120.

As shown in fig. 1 to 6, the edge of the lcd glass 410 is connected to the adhesive frame 110 through a plurality of edge-covering adhesives 420.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application in any way. Those skilled in the art can now make numerous possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the claimed embodiments. Therefore, all equivalent changes in shape, structure and principle according to the present application should be covered by the protection scope of the present application without departing from the technical scheme of the present application.

Claims

1. The utility model provides a bilateral backlight unit display device that goes into, its characterized in that includes:

and the display component is accommodated at one end of the rubber frame back to the rear frame.

2. The backlight module display device with dual-edge light entrance as claimed in claim 1, wherein a first connecting strip is extended from the upper light bar to the rear frame, a second connecting strip is extended from the lower light bar to the rear frame, ends of the first connecting strip and the second connecting strip are parallel to an end face of the rear frame, and a gap is formed between each of the first connecting strip and the second connecting strip and the end face of the rear frame.

3. The device as claimed in claim 1, wherein the plastic frame has a first receiving groove and a second receiving groove, the first receiving groove and the second receiving groove are connected to each other, the rear frame is received in the second receiving groove, and the display module is received in the first receiving groove.

4. The dual-edge-light backlight module display device as claimed in claim 3, wherein a third receiving groove is formed at an end of the rear frame facing the plastic frame, and the light guide assembly and the light enhancement assembly are disposed in the third receiving groove.

5. The backlight module display device with bilateral incidence of claim 4, wherein the outer sidewall of the plastic frame is provided with a first slot communicated with the second receiving slot;

the rear frame is upward to the frame of gluing is bent and is formed with the first frame that encloses, the first frame that encloses centers on forming the third holding tank, the first lateral wall that encloses the frame is provided with first fixture block, first fixture block with first draw-in groove cooperation forms the joint.

6. The dual edge lighting backlight module display device of claim 1, wherein a heat sink is disposed on the inner end surface of the rear frame, and a reflector plate is disposed between the heat sink and the light guide plate.

7. The dual-edge-light backlight module display device as claimed in claim 1, wherein the light intensifying assembly comprises a lower diffusion sheet, a lower light intensifying sheet, an upper light intensifying sheet and an upper diffusion sheet sequentially arranged, the lower diffusion sheet is connected with the end face of the light guide plate opposite to the rear frame, and the upper diffusion sheet is connected with the end face of the rubber frame opposite to the rear frame.

8. The dual edge lighting backlight module display device of claim 1, wherein the display assembly comprises liquid crystal display glass, and the liquid crystal display glass is accommodated at an end of the plastic frame facing away from the rear frame.

9. The backlight module display device of claim 8, wherein the edge of the liquid crystal display glass is connected to the adhesive frame by a plurality of edge-covering adhesives.