CN210573100U

CN210573100U - Connecting fixing piece, backlight module and liquid crystal display module

Info

Publication number: CN210573100U
Application number: CN201921488186.4U
Authority: CN
Inventors: 余亚军
Original assignee: Oneplus Technology Shenzhen Co Ltd
Current assignee: Oneplus Technology Shenzhen Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-05-19
Anticipated expiration: 2029-09-06

Abstract

The utility model provides a connect mounting, backlight unit and liquid crystal display module assembly belongs to liquid crystal display module assembly's assembly technical field. The connecting and fixing piece comprises a base plate, one side face of the base plate is provided with a protruding column, and the top edge of the base plate is provided with a hanging lug. The backlight module comprises a back plate, a middle frame, an optical diaphragm, a light guide plate, a reflector plate and a connecting fixing piece, wherein the protruding columns are embedded into positioning grooves of the light guide plate during assembly; the hanging lug of the substrate is inserted into the positioning hole of the optical film. The liquid crystal display module comprises a display panel and the backlight module. The utility model is provided with the convex column and the hanging lug, when in assembly, the convex column is embedded and matched with the positioning groove at the edge of the light guide plate, and the hanging lug is inserted and matched with the positioning hole of the optical diaphragm, thereby realizing the stable positioning of the light guide plate and the optical diaphragm in the backlight module; the liquid crystal display module using the connecting fixing piece and the backlight module also has more stable performance.

Description

Connecting fixing piece, backlight module and liquid crystal display module

Technical Field

The utility model relates to a liquid crystal display module's assembly technical field especially relates to a connect mounting, use this backlight unit who connects the mounting and contain this backlight unit's liquid crystal display module.

Background

The existing drawer type ultrathin liquid crystal display structure comprises an optical diaphragm, a light guide plate, a reflector plate and a metal drawer middle frame, wherein the edges of the optical diaphragm, the light guide plate and the reflector plate are accommodated in an assembly groove of the metal drawer middle frame; light guide plate and reflector plate fixed connection, optics diaphragm and light guide plate are only superpose together, horizontal displacement appears easily, consequently, need fix a position optics diaphragm with the diaphragm hangers reference column among the prior art, specifically set up the opening at the optics diaphragm edge, during the assembly, the diaphragm hangers reference column inserts from metal drawer center upper shed department, passes the open region of optics diaphragm to fix optics diaphragm, and then realize the equipment and the fixing of optics diaphragm.

However, the conventional method for assembling the backlight assembly by means of the positioning posts has the following disadvantages:

1. when the membrane hangers and the positioning columns cannot be inserted, the openings of the optical membranes and the openings of the middle frame of the metal drawer are aligned in the center. This results in the membrane hanger alignment post being likely to not pass completely through 2 openings when inserted because the membrane assembly is inserted blindly and no internal alignment is seen. This will result in the membrane hanger locating post not being able to be inserted to the bottom and not functioning to locate the optical membrane.

2. The positioning column of the membrane hangers is inclined inside after being possibly inserted, so that the membrane hangers cannot be inserted in place and the top of the membrane hangers cannot be pressed down. After the membrane hangers are inserted into the drawer, the membrane hangers can be directly placed into the drawer space in a vibration environment after the membrane hangers are inclined, and the positioning function cannot be achieved.

In view of the above, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a connect mounting, backlight unit and liquid crystal display module to solve among the prior art diaphragm hangers reference column and plant not in place, the easy not hard up problem, ensure light guide plate and optics diaphragm and stabilize the location in the device.

In order to achieve the above purpose, the utility model adopts the following technical means:

a connecting and fixing piece comprises a base plate, wherein the base plate comprises a top edge and a bottom edge, a protruding column is arranged on one side face of the base plate, and a hanging lug is arranged on the top edge of the base plate.

As a further improvement, the connecting and fixing piece further comprises an additional plate, the additional plate is connected with the bottom edge of the base plate, and the base plate is perpendicular to the additional plate. The additional plate can make the connecting and fixing piece connected on the light guide plate more firmly.

As a further improvement, the hanging lug is formed by extending upwards or outwards in a protruding way from the top edge part of the base plate.

A backlight module comprises a back plate, a middle frame, an optical membrane, a light guide plate, a reflector plate and a connecting fixing piece, wherein an assembly groove is formed in the edge of the middle frame; the edge of the light guide plate is provided with a positioning groove, and the edge of the optical diaphragm is provided with a positioning hole; the connecting and fixing piece comprises a substrate, the substrate comprises a top edge and a bottom edge, one side face of the substrate is provided with a protruding column, and the top edge of the substrate is provided with a hanging lug; the substrate is fixed at the edge of the light guide plate, and the protruding columns of the substrate are embedded into the positioning grooves of the light guide plate; the hanging lug of the substrate is inserted into the positioning hole of the optical film.

As a further improvement, the connecting and fixing piece further comprises an additional plate, the additional plate is connected with the bottom edge of the base plate, and the base plate is perpendicular to the additional plate; the additional plate is fixedly connected to the light guide plate. The additional plate can make the connecting and fixing piece connected on the light guide plate more firmly.

As a further improvement, the base plate and the additional plate are both provided with a glue preparation surface, and the connection fixing member is fixed on the light guide plate by the glue preparation surface. When in use, the adhesive tape is bonded on the light guide plate, and has reliable connection and convenient operation.

As a further improvement, the edge part of the optical film protrudes outwards to form a boss, the positioning hole is arranged at the boss, and the positioning hole is in a long strip shape;

the hanging lug is formed by upwards extending the top edge part of the base plate in a protruding mode, and the size of the positioning hole is matched with that of the hanging lug.

As a further improvement, the edge part of the optical film is bent downwards and extended to form a bending sheet, and the positioning hole is formed in the bending edge of the bending sheet;

the hanging lug is formed by extending the edge part of the top edge of the base plate outwards, and the hanging lug is inserted into the positioning hole.

A liquid crystal display module comprises a display panel and the backlight module.

As a further improvement, the display panel is bonded on the middle frame through foam.

Compared with the prior art, the utility model discloses following beneficial effect is brought:

the connecting and fixing piece of the utility model is provided with the convex column and the hanging lug, when in assembly, the convex column is embedded and matched with the positioning groove at the edge of the light guide plate, and the hanging lug is inserted and matched with the positioning hole of the optical diaphragm, thereby realizing the stable positioning of the light guide plate and the optical diaphragm in the backlight module; the liquid crystal display module using the connecting fixing piece and the backlight module also has more stable performance.

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 sectional view of a liquid crystal display module according to a preferred embodiment of the present invention;

FIG. 2 is a perspective view of a connection fixture according to a preferred embodiment of the present invention;

FIG. 3 is a partial schematic view of a preferred embodiment of the present invention as assembled;

FIG. 4 is another partial schematic view of a preferred embodiment of the present invention as assembled;

FIG. 5 is a further partial schematic view of a preferred embodiment of the present invention as assembled;

FIG. 6 shows a perspective view of a connection fixture according to another embodiment of the present invention;

figure 7 shows a partial schematic view of the connection fixture of figure 6 as assembled.

Description of the main element symbols:

1-a display panel; 11-foam cotton; 2-middle frame; 21-assembling grooves; 3-an optical film; 31-a positioning hole; 32-boss; 33-a bending sheet; 4-a light guide plate; 41-positioning grooves; 5-a reflector plate; 51-avoiding the notch; 6-connecting a fixing piece; 61-a substrate; 62-raised columns; 63-hanging a lug; 64-additional plates.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be 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. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1 to 5, the present embodiment provides a liquid crystal display module, which includes a display panel 1 and a backlight module. The backlight module comprises a middle frame 2, an optical film 3, a light guide plate 4, a reflecting sheet 5 and a connecting fixing piece 6. Specifically, in the present embodiment, the optical film 3, the light guide plate 4 and the reflective sheet 5 are all rectangular sheet structures. The present embodiment is described with reference to the orientation of fig. 1.

Please refer to fig. 1, which is an assembly cross-sectional view of the liquid crystal display module according to the present embodiment (the symmetrical other half is omitted), wherein an edge of the middle frame 2 is provided with an assembly groove 21, specifically, in the present embodiment, the assembly groove 21 is U-shaped, and an opening faces to the center of the middle frame 2. The middle frame 2 is rectangular as a whole, the size of the middle frame is matched with that of the optical diaphragm 3, the light guide plate 4 and the reflector plate 5, the assembling grooves 21 are formed in three edges of the middle frame 2, and the fourth edge of the middle frame is provided with an opening, so that the middle frame 2 is in a drawer shape with one opening. The optical film 3, the light guide plate 4 and the reflection sheet 5 are inserted into and mounted on the middle frame 2 from an opening at one side of the middle frame 2.

Specifically, the optical film 3, the light guide plate 4 and the reflective sheet 5 are stacked in the middle frame 2, and the edges of the optical film 3, the light guide plate 4 and the reflective sheet 5 are accommodated in the assembly groove 21 of the middle frame 2; the edge of the light guide plate 4 is provided with a positioning groove 41, and the edge of the optical film 3 is provided with a positioning hole 31; the connecting and fixing member 6 comprises a substrate 61, the substrate 61 comprises a top edge and a bottom edge, a protruding column 62 is arranged on one side surface of the substrate 61, and a hanging lug 63 is arranged on the top edge of the substrate 61; the substrate 61 is fixed at the edge of the light guide plate 4, and the protruding columns 62 of the substrate 61 are embedded in the positioning grooves 41 of the light guide plate 4; the hanging lugs 63 of the substrate 61 are inserted into the positioning holes 31 of the optical film 3.

The shape of the positioning slot 41 and the projection column 62 are matched, for example, in this embodiment, the positioning slot 41 is a U-shaped slot, and the cross section of the projection column 62 is correspondingly U-shaped, so that the projection column 62 can be completely inserted into the positioning slot 41. Of course, in other embodiments, the positioning slot 41 and the protrusion column 62 may be square, and the shapes of the two are not limited as long as they match each other.

Further, the display panel 1 is bonded to the middle frame 2 through a foam 11 with double-sided glue.

As described above, the substrate 61 of the connecting and fixing member 6 is fixedly connected to the light guide plate 4, and the protruding column 62 is completely embedded into the positioning groove 41 of the light guide plate 4, and meanwhile, the hanging lug 63 of the connecting and fixing member 6 is inserted into the positioning hole 31 of the optical film 3, so that stable positioning on the optical film 3 and the light guide plate 4 can be realized, and the optical film 3 does not undergo horizontal displacement. The liquid crystal display module using the connecting fixing piece 6 and the backlight module has better performance due to stable assembly of the internal structure.

The specific assembly steps of this embodiment are:

aligning the protruding columns of the connecting and fixing member 6 and embedding the protruding columns into the positioning grooves 41 of the light guide plate 4, and fixing the substrate 61 of the connecting and fixing member 6 on the edge end surface of the light guide plate 4, wherein at this time, the hanging lugs 63 of the connecting and fixing member 6 protrude from the upper surface of the light guide plate 4; then, the optical film 3 is placed on the light guide plate 4, so that the positioning hole 31 of the optical film 3 is aligned with the hanging lug 63 of the connecting fixing piece 6, and the hanging lug 63 is inserted into the positioning hole 31; and then the whole body is inserted into the middle frame 2 from the opening at one side of the middle frame 2 and is arranged on the middle frame 2, and the assembly of the whole backlight module is completed. Therefore, the whole assembly process is simple and smooth, the problem that the positioning column of the diaphragm hangers in the prior art is not inserted in place can be solved, and the problem that the positioning column is loosened and inclined can be avoided after assembly, so that the light guide plate 4 and the optical diaphragm 3 can be stably positioned in the device.

As a further improvement, the connecting and fixing member 6 further includes an additional plate 64, the additional plate 64 is connected with the bottom edge of the base plate 61, the base plate 61 and the additional plate 64 are perpendicular to each other, and the whole connecting and fixing member 6 is L-shaped; the additional plate 64 is fixedly connected to the light guide plate 4, specifically, fixed to an end face of the edge of the light guide plate 4. The additional plate 64 is used to fix the connection fixing member 6 on the light guide plate 4, which can further enhance the connection stability between the connection fixing member 6 and the light guide plate 4. In order to fit the additional plate 64, an escape notch 51 (shown in fig. 3) is formed at a position corresponding to the reflection sheet 5.

In the present embodiment, the substrate 61 and the additional plate 64 are fixedly connected to the light guide plate 4 by means of glue. Specifically, the glue surfaces are arranged on the surfaces, facing the light guide plate 4, of the base plate 61 and the additional plate 64, and when the adhesive tape is used, the adhesive tape is bonded on the light guide plate 4, so that the adhesive tape is reliable in connection and convenient to operate. Of course, other fixing connection manners may also be adopted, such as providing a snap structure on the assembling surface of the substrate 61 and the light guide plate 4 to realize the fixing connection therebetween, and so on.

In one embodiment, the edge portion of the optical film 3 protrudes outward to form a boss 32, the positioning hole is disposed at the boss 32, and the positioning hole 31 is in a long strip shape; the hanging lugs 63 are formed by extending the top edge part of the base plate 61 upwards, the hanging lugs 63 are rectangular sheets, the bent parts are provided with arc chamfers, and the size of the positioning holes 31 is matched with that of the hanging lugs 63. After assembly, the hanging lug 63 is inserted into the positioning hole 31, so that the hanging lug 63 blocks the optical film 3 from being displaced in the horizontal position, and the effect of stable positioning is achieved. Specifically, the height of the hanging lug 63 is equal to the thickness of the optical film 3, and after the assembly, the top surface of the hanging lug 63 is flush with the upper surface of the optical film 3.

Specifically, in this embodiment, the middle frame 2 is made of a metal plate, specifically: three edges of the metal plate are bent upward and then bent and extended toward the center of the middle frame 2, thereby forming a structure with U-shaped fitting grooves 21 at the three edges of the middle frame 2. The height of the fitting groove 21 corresponds to the thickness of the optical film 3, the light guide plate 4, and the reflection sheet 5. The height of the substrate 61 of the connecting fixture 6 is equal to the thickness of the optical film 3, the light guide plate 4 and the reflector 5.

It should be noted that the middle frame 2 in this embodiment also serves as a back plate to support the whole module. Generally, the backlight module further includes a back plate mounted on the bottom surface of the middle frame 2.

Example two

Referring to fig. 6 and 7, the difference between the present embodiment and the first embodiment is that the connecting and fixing member 6 is structurally modified, and other structural components are the same as those in the first embodiment.

Referring to fig. 6, in the present embodiment, the connecting and fixing member 6 includes a base plate 61 and an additional plate 64, the base plate 61 has a top edge and a bottom edge, the additional plate 64 is connected to the bottom edge of the base plate 61, the base plate 61 and the additional plate 64 are perpendicular to each other, and the whole connecting and fixing member 6 is L-shaped; one side of the base plate 61 is provided with a protruding column 62, and the top edge of the base plate 61 is provided with a hanging lug 63, wherein the hanging lug 63 is formed by extending outwards from the top edge of the base plate 61.

Referring to fig. 7, corresponding to the connection fixing element 6 of the present embodiment, the edge portion of the optical film 3 is bent downward to form a bending piece 33, the positioning hole 31 is formed on the bending edge of the bending piece 33, and the positioning hole 31 penetrates through the upper surface and the side surface of the optical film 3 (i.e., the outer surface of the bending piece 33); the specific shape of the bending piece 33 is not limited, for example, the bending piece 33 is an inverted isosceles trapezoid in the embodiment, and the bending piece 33 may also be a rectangle, an ellipse, etc. in other embodiments, the present invention is not limited thereto.

Referring to fig. 7, during assembly, the substrate 61 and the additional plate 64 are fixedly connected to the light guide plate 4, as described in the first embodiment, the adhesive preparation surfaces are respectively disposed on the substrate 61 and the additional plate 64, and when the light guide plate is used, the connecting and fixing member 6 is adhered to the light guide plate 4, so that the connection is firm, and the operation is convenient. At this time, the protruding columns 62 are embedded in the positioning grooves 41 of the light guide plate 4, the hanging lugs 63 are transversely inserted into the positioning holes 31, and the end surfaces of the extending parts of the hanging lugs 63 are flush with the outer surfaces of the bending pieces 33. The hanging lugs 63 limit the optical diaphragm 3 from the horizontal direction and the vertical direction, so that the relative position of the optical diaphragm 3 and the light guide plate 4 is ensured not to deviate, and the assembly stability of the backlight module is ensured. Meanwhile, the hanging lugs 63 and the positioning holes 31 in the shape can achieve the purpose of reducing the overall thickness of the backlight module, so that the liquid crystal display module can achieve the purpose of being ultrathin. When the backlight module is applied to the liquid crystal display module, the stability of the liquid crystal display module can be enhanced.

It should be noted that, only one hanging lug 63 is arranged on each connecting and fixing member 6 in the above embodiments, but it should be understood that the present invention is not limited to the number of hanging lugs 63, and in other embodiments, two or more hanging lugs 63 may be arranged; for the same reason, two or more of the protruding columns 62 may be provided.

To sum up, the connection fixing member 6 of the present invention has the protruding columns 62 and the hanging lugs 63, when assembling, the protruding columns 62 are embedded and matched with the positioning slots 41 at the edge of the light guide plate 4, and the hanging lugs 63 are inserted and matched with the positioning holes 31 of the optical film 3, so that the stable positioning of the light guide plate 4 and the optical film 3 in the backlight module can be realized; the liquid crystal display module using the connecting and fixing piece 6 and the backlight module also has more stable performance.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A connection fixing member, characterized in that: the connecting and fixing piece comprises a substrate, the substrate comprises a top edge and a bottom edge, a protruding column is arranged on one side face of the substrate, and a hanging lug is arranged on the top edge of the substrate.

2. The connection fixture of claim 1, wherein: the connecting and fixing piece further comprises an additional plate, the additional plate is connected with the bottom edge of the base plate, and the base plate is perpendicular to the additional plate.

3. The connection fixture of claim 1 or 2, wherein: the hanging lug is formed by the upward or outward protruding extension of the top edge part of the base plate.

4. A backlight module is characterized in that: the backlight module comprises a back plate, a middle frame, an optical membrane, a light guide plate, a reflector plate and a connecting fixing piece, wherein an assembly groove is formed in the edge of the middle frame, the optical membrane, the light guide plate and the reflector plate are stacked in the middle frame, and the edges of the optical membrane, the light guide plate and the reflector plate are accommodated in the assembly groove of the middle frame; the edge of the light guide plate is provided with a positioning groove, and the edge of the optical diaphragm is provided with a positioning hole; the connecting and fixing piece comprises a substrate, the substrate comprises a top edge and a bottom edge, one side face of the substrate is provided with a protruding column, and the top edge of the substrate is provided with a hanging lug; the substrate is fixed at the edge of the light guide plate, and the protruding columns of the substrate are embedded into the positioning grooves of the light guide plate; the hanging lug of the substrate is inserted into the positioning hole of the optical film.

5. The backlight module of claim 4, wherein: the connecting and fixing piece also comprises an additional plate, the additional plate is connected with the bottom edge of the base plate, and the base plate is vertical to the additional plate; the additional plate is fixedly connected to the light guide plate.

6. The backlight module of claim 5, wherein: the base plate and the additional plate are both provided with a glue preparation surface, and the glue preparation surfaces fix the connecting and fixing piece on the light guide plate.

7. The backlight module of claim 4, wherein: the edge part of the optical film protrudes outwards to form a boss, the positioning hole is arranged at the boss and is in a long strip shape;

8. The backlight module of claim 4, wherein: the edge part of the optical film is bent downwards and extends to form a bending piece, and the positioning hole is formed in a bending edge of the bending piece;

9. The utility model provides a liquid crystal display module assembly which characterized in that: comprising a display panel and a backlight module according to any one of claims 4 to 8.

10. The liquid crystal display module of claim 9, wherein: the display panel is bonded on the middle frame through foam.