CN216411805U

CN216411805U - Diffusion plate supporting device, backlight module and display device

Info

Publication number: CN216411805U
Application number: CN202122412024.6U
Authority: CN
Inventors: 唐贵龙
Original assignee: Guangzhou Shitong Seiko Photoelectric Technology Co ltd
Current assignee: Guangzhou Shitong Seiko Photoelectric Technology Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-04-29
Anticipated expiration: 2031-10-08

Abstract

The utility model relates to a diffusion plate supporting device, a backlight module and a display device. The diffusion plate supporting device comprises a bottom plate, a first supporting column and a second supporting column, wherein the first supporting column is connected with the bottom plate; the first support column is used for abutting against the diffusion plate so as to support the diffusion plate; the second supporting columns are connected with the bottom plate, and the second supporting columns and the first supporting columns are arranged on the same side of the bottom plate at intervals; the second support column is used for abutting against the diffusion plate so as to support the diffusion plate. The backlight module and the display device both comprise the diffusion plate supporting device. The first support column and the second support column are abutted with the diffusion plate, so that the diffusion plate has a support force in the direction of the back plate towards the diffusion plate, the support strength of the diffusion plate is improved, and the diffusion plate also has good support strength particularly in special use scenes such as lying flat or large-angle elevation of the display device.

Description

Diffusion plate supporting device, backlight module and display device

Technical Field

The present invention relates to a backlight module, and more particularly to a diffuser plate supporting device, a backlight module and a display device.

Background

In a display device, such as an LED television, a core component thereof includes a backlight module. The backlight module can supply light sources with sufficient brightness and uniform distribution, so that the display device can normally display images.

The backlight module generally includes a back plate, a light emitting element and a diffusion plate. The light emitting assembly is arranged on the back plate, and the edge of the diffusion plate is connected with the edge of the back plate. The arrangement of the diffusion plate can enable the light source distribution to be more uniform.

Since the diffuser plate is connected to the back plate only through the edge, the supporting strength of the diffuser plate is insufficient in special use scenes, such as a use scene in which the display device lies flat or a use scene in which the display device has a large angle of elevation.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a diffuser plate supporting device, a backlight module and a display device, which can solve the problem of insufficient supporting strength of the diffuser plate.

A diffuser plate support apparatus comprising:

a base plate;

the first supporting column is connected with the bottom plate; the first support column is used for abutting against a diffusion plate so as to support the diffusion plate;

the second supporting columns are connected with the bottom plate, and the second supporting columns and the first supporting columns are arranged on the same side of the bottom plate at intervals; the second support column is used for abutting against the diffusion plate so as to support the diffusion plate.

In one embodiment, the distance between the first support column and the second support column is 45mm-65 mm.

In one embodiment, the area of a first end surface of one side of the first support column, which is connected with the bottom plate, is M, the area of a second end surface of the first support column, which is far away from the bottom plate, is N, and M is greater than N;

and/or the area of the third end face of one side, connected with the bottom plate, of the second supporting column is P, the area of the fourth end face, far away from the bottom plate, of the second supporting column is Q, and P is larger than Q.

In one embodiment, the first supporting column and the second supporting column are gradually reduced in length along a direction away from the bottom plate.

In one embodiment, the length of the first support column is greater than the width of the first support column;

the length of the second support column is greater than the width of the second support column.

In one embodiment, the width of each of the first support column and the second support column ranges from 0.8mm to 1.3 mm.

In one embodiment, the base plate is provided with a positioning structure for cooperating with the back plate.

In one embodiment, the bottom plate, the first support column and the second support column are integrally formed.

A backlight module comprises the diffusion plate supporting device.

A display device comprises the diffusion plate supporting device.

The diffusion plate supporting device is connected with the back plate through the bottom plate and is abutted against the diffusion plate through the first supporting column and the second supporting column, so that the diffusion plate has supporting force in the direction of the back plate towards the diffusion plate, the supporting strength of the diffusion plate is improved, and the diffusion plate also has better supporting strength particularly in special use scenes such as flat lying or large-angle elevation of the display device.

In addition, the first support columns and the second support columns are spaced, so that the support columns are not easy to form shadows in the process of refraction of light rays in the space between the back plate and the diffusion plate in the light emitting process of the light emitting assembly of the backlight module, and the shadows of the support columns influence the backlight module.

Drawings

FIG. 1 is a schematic structural diagram of a diffuser plate supporting apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

fig. 3 is a schematic cross-sectional view of a backlight module according to an embodiment of the utility model;

fig. 4 is a schematic structural diagram of a backlight module (without a diffuser plate) according to an embodiment of the utility model.

Description of reference numerals:

100. a base plate; 110. positioning the projection; 111. a second through hole; 120. mounting holes; 130. a first through hole; 200. a first support column; 210. a first end face; 220. a second end face; 300. a second support column; 310. A third end face; 320. a fourth end face; 400. a back plate; 500. a diffusion plate; 600. a light source assembly.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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.

It will be understood that when an element is referred to as being "secured to" or "disposed on" 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 4, an embodiment of the utility model provides a diffuser plate supporting apparatus including a base plate 100, a first supporting column 200 and a second supporting column 300.

As shown in fig. 3, the bottom plate 100 may be connected to a back plate 400 of a backlight module, the first supporting columns 200 and the second supporting columns 300 are disposed at the same side of the bottom plate 100 at intervals, and both the first supporting columns 200 and the second supporting columns 300 are abutted against the diffusion plate 500 to provide a supporting force for the diffusion plate 500, so as to improve the supporting strength of the diffusion plate 500.

For convenience of description, referring to fig. 1, the length direction of the bottom plate 100, the first supporting columns 200 and the second supporting columns 300 is defined as an X direction, the width direction of the bottom plate 100, the first supporting columns 200 and the second supporting columns 300 is defined as a Y direction, and the thickness direction of the bottom plate 100 and the height direction of the first supporting columns 200 and the second supporting columns 300 are defined as a Z direction.

In some embodiments, as shown in fig. 1-4, the base plate 100 may be a sheet-like base plate 100 to facilitate connection with the back plate 400. When the bottom plate 100 is connected to the back plate 400, the connection manner may be selected from a screw connection, a bolt connection, a welding connection, or the like, or may be selected from the prior art.

As shown in fig. 1-3, the bottom plate 100 is provided with at least one mounting hole 120, and the mounting hole 120 may be a hole with threads or a hole with a smooth inner wall. When the bottom plate 100 and the back plate 400 are mounted, one end of a connector such as a screw or a bolt may pass through the mounting hole 120 and be in threaded connection with the back plate 400, and the other end is located at an opening of the mounting hole 120 away from the back plate 400 so as to abut against the opening of the mounting hole 120.

In the illustrated embodiment, the mounting hole 120 is located in the middle of the base plate 100. In some other embodiments, the mounting holes 120 may also be disposed at the edge of the base plate 100. In other embodiments, at least one mounting hole 120 is located in the middle of the base plate 100 and at least one mounting hole 120 is located at the edge of the base plate 100.

As shown in fig. 1, the base plate 100 is provided with a positioning structure. The positioning structure may be matched with the backlight module to position the bottom plate 100, thereby reducing the difficulty in aligning the bottom plate 100 and the back plate 400.

In some embodiments, the positioning structure may include a positioning protrusion 110. Correspondingly, the back plate 400 may be provided with positioning holes. The positioning protrusion 110 is inserted into the positioning hole.

In some embodiments, the bottom plate 100 defines a first through hole 130, and the positioning protrusion 110 defines a second through hole 111. The first through hole 130 communicates with the second through hole 111, and the axes of the first through hole 130 and the second through hole 111 coincide. When the bottom plate 100 and the back plate 400 are mounted, the mounting members such as screws or bolts may sequentially pass through the first through holes 130 and the second through holes 111 and be screwed to the inner walls of the positioning holes of the back plate 400. It is possible to connect the bottom plate 100 and the back plate 400 while positioning them.

As shown in fig. 3, the first through hole 130 has a larger diameter than the second through hole 111 so that an end of a mounting member such as a screw or a bolt can be received such that the end of the mounting member is not higher than the surface of the base plate 100 far from the back plate 400.

It should be noted that, in some embodiments, the first through hole 130 and the mounting hole 120 are the same hole. In some embodiments, the first through-hole 130 is a different hole than the mounting hole 120.

In other embodiments, the positioning structure may include a positioning groove, and correspondingly, the back plate 400 may be provided with a positioning protrusion, and the positioning protrusion is inserted into the positioning groove.

In some embodiments, the positioning convex column may be provided with a threaded hole, the threaded hole is communicated with the positioning groove, and the axes of the threaded hole and the positioning groove coincide, so that a mounting member such as a screw or a bolt can pass through the positioning groove and be in threaded connection with the threaded hole.

In some embodiments, the shape of the base plate 100 may be rectangular, oval, or elliptical-like. The length of the bottom plate 100 in the longitudinal direction is greater than the length of the bottom plate 100 in the width direction.

As shown in fig. 1 and 2, in some embodiments, the width of the middle of the bottom plate 100 is greater than the width of the edges of the bottom plate 100. And the middle portion of the bottom plate 100 is provided with the first through hole 130 and the mounting hole 120. The edges of the base plate 100 are respectively connected to the first support column 200 and the second support column 300.

As shown in fig. 1 to 3, the first support column 200 has a first end surface 210 and a second end surface 220 opposite to each other, the first support column 200 is connected to the bottom plate 100 through the first end surface 210, and the first support column 200 abuts against the diffusion plate 500 through the second end surface 220. The area of the first end face 210 is defined as M, and the area of the second end face 220 is defined as N. M is greater than N to increase the connection strength between the first support column 200 and the bottom plate 100, reduce the support area with the diffusion plate 500, and reduce the influence of light and shadow on the diffusion plate 500 due to the excessively large second end surface 220, thereby affecting the display effect of the display device.

In some embodiments, the first support column 200 tapers in length along its height. Above-mentioned setting makes first support column 200 have better supporting effect simultaneously, reduces first support column 200's volume to a great extent, and then reduces first support column 200 and is shone the condition emergence that forms the shadow by the light source subassembly.

In some embodiments, the first support column 200 has a constant tendency to decrease in length along its height, i.e., the length decreases in a direction away from the base plate 100. In other embodiments, the first support column 200 has an increased tendency to become smaller in length along its height. That is, the length decreases to a greater and greater extent in a direction away from the base plate 100. The degree of length reduction can be adjusted according to actual conditions.

In some embodiments, the first support column 200 has a length greater than its width. That is, the length of the first supporting column 200 along the connecting line of the first supporting column 200 and the second supporting column 300 is greater than the width of the first supporting column 200. The arrangement can effectively reduce the occurrence of the shadow formed by the first support column 200.

As shown in fig. 1 to 3, the second supporting column 300 has a third end surface 310 and a fourth end surface 320 which are opposite to each other, the second supporting column 300 is connected to the bottom plate 100 through the third end surface 310, and the second supporting column 300 abuts against the diffuser plate 500 through the fourth end surface 320. The area of the third end surface 310 is defined as P, and the area of the second end surface 220 is defined as Q. P is greater than Q, so as to increase the connection strength between the second supporting columns 300 and the bottom plate 100, reduce the supporting area with the diffusion plate 500, and reduce the influence of light and shadow on the diffusion plate 500 due to the fact that the fourth end surface 320 is too large, thereby affecting the display effect of the display device.

In some embodiments, the second support posts 300 are tapered along their height. The above arrangement enables the second supporting column 300 to have a better supporting effect, and at the same time, the volume of the second supporting column 300 is reduced to a greater extent, so as to reduce the occurrence of the shadow formed by the second supporting column 300 being irradiated by the light source assembly 600 (shown in fig. 4).

In some embodiments, the second support columns 300 have a constant tendency to decrease in length along their height, i.e., decrease in length away from the base plate 100. In other embodiments, the second support columns 300 have an increased tendency to decrease in length along their height. That is, the length decreases to a greater and greater extent in a direction away from the base plate 100. The degree of length reduction can be adjusted according to actual conditions.

In some embodiments, the length of the second support post 300 is greater than its width. That is, the length of the second supporting column 300 along the connecting line of the first supporting column 200 and the second supporting column 300 is greater than the width of the second supporting column 300. The arrangement can effectively reduce the occurrence of the shadow formed by the second supporting column 300.

In some embodiments, as shown in fig. 1-4, the first support column 200 and the second support column 300 may be completely identical in shape.

In other embodiments, the first support column 200 and the second support column 300 may have different shapes, and the heights of the first support column 200 and the second support column 300 are consistent so as to be abutted against the diffusion plate 500.

For example, in one embodiment, the first support column 200 and the second support column 300 have the same height and thickness, and the length of the first support column 200 is smaller than the length of the second support column 300.

For another example, in one embodiment, the heights of the first supporting column 200 and the second supporting column 300 are the same, the length of the first supporting column 200 is smaller than the length of the second supporting column 300, and the thickness of the first supporting column 200 is greater than the thickness of the second supporting column 300.

For another example, in one embodiment, the first support column 200 and the second support column 300 have the same height and thickness, and the first support column 200 tends to be smaller in length along the height direction. The second support columns 300 do not have a tendency to become smaller in length along the height direction thereof.

The width ranges of the first supporting column 200 and the second supporting column 300 are both 0.8mm-1.3 mm. For example, it may be 0.8mm, 1.0mm, 1.2mm, 1.25mm or 1.3 mm. The heights of the first and

second support columns

200 and 300 may be adjusted according to the distance between the backplate 400 and the diffusion plate 500.

The distance between the first support column 200 and the second support column 300 is 45mm-65 mm. For example, it may be 45mm, 50mm, 55mm, 60mm or 65 mm. When the distance between the first support column 200 and the second support column 300 is within the above range, substantially no shadow is formed when the first support column 200 and the second support column 300 are irradiated by the light source assembly 600. In addition, when the distance between the first supporting columns 200 and the second supporting columns 300 is within the above range, the supporting force of the first supporting columns 200 and the second supporting columns 300 on the diffuser plate 500 is moderate.

In some embodiments, the connection manner of the bottom plate 100 and the first and

second support columns

200 and 300 may be integrally formed, welded, bonded, or snapped. For example, in the illustrated embodiment, the connection manner of the bottom plate 100 and the first and

second support columns

200 and 300 may be formed by integral molding and injection molding. In other embodiments, the base plate 100 may be provided with a mounting groove, and the ends of the first and

second support columns

200 and 300 may be inserted into and snapped into the mounting groove.

Here, the connection modes of the bottom plate 100, the first support column 200 and the second support column 300 may be the same or different. For example, in the illustrated embodiment, the first support column 200, the second support column 300 and the bottom plate 100 are integrally formed. For another example, in another embodiment, the first support column 200 is integrally formed with the base plate 100, and the second support column 300 is engaged with the base plate 100.

The diffuser plate supporting apparatus is connected to the back plate 400 through the bottom plate 100, and supports the diffuser plate 500 through the first supporting columns 200 and the second supporting columns 300, so as to improve the supporting strength of the diffuser plate 500. In addition, the distance between the first supporting column 200 and the second supporting column 300 and the shape thereof can effectively reduce the shadows formed by the two supporting columns under the irradiation of the light source assembly 600, thereby improving the uniformity of the light source of the backlight module.

As shown in fig. 3 and 4, an embodiment of the present invention provides a backlight module, which includes a back plate 400, a light source assembly 600, a diffuser plate 500 and the diffuser plate supporting device. The light source assembly 600 and the diffusion plate supporting device are disposed on the housing 400. The number of the diffusion plate supporting devices is multiple, and the diffusion plate supporting devices are arranged at intervals. The diffusion plate 500 is connected to the edge of the back plate 400, and the diffusion plate 500 abuts against the first support columns 200 and the second support columns 300 of each diffusion plate supporting device.

Compared with the diffuser plate supporting device provided with only the first supporting columns 200 or the second supporting columns 300, when the diffuser plate supporting device provided with the first supporting columns 200 or the second supporting columns 300 is installed, the number of diffuser plate supporting devices is small, the installation process and the time spent are shortened, and the assembly process is optimized.

An embodiment of the utility model provides a display device, and a backlight module of the display device includes the diffuser plate supporting device. The display device may be a liquid crystal display, a liquid crystal television, a liquid crystal teaching machine, a liquid crystal advertising machine, or the like, or may be another type of display device. When the display device is used, the diffusion plate 500 of the display device has better supporting strength when the display device is in a special use scene of lying or large-angle elevation.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A diffuser plate support apparatus, comprising:

a base plate;

2. The diffuser plate support apparatus of claim 1 wherein the distance between the first support column and the second support column is 45mm to 65 mm.

3. The diffuser plate support apparatus of claim 2 wherein the first end surface of the side of the first support post connected to the base plate has an area M, the second end surface of the first support post remote from the base plate has an area N, M being greater than N;

4. The diffuser plate support apparatus of claim 3 wherein the first support columns and the second support columns each have a decreasing length in a direction away from the base plate.

5. The diffuser plate support apparatus of claim 1 wherein the length of the first support column is greater than the width of the first support column;

6. The diffuser plate support apparatus of claim 5 wherein the width of each of the first and second support posts ranges from 0.8mm to 1.3 mm.

7. The diffuser plate support apparatus of claim 1, wherein the base plate is provided with a locating structure for mating with a back plate.

8. The diffuser plate support apparatus of any of claims 1-7, wherein the base plate, the first support columns, and the second support columns are integrally formed.

9. A backlight module comprising the diffuser plate supporting apparatus of any one of claims 1 to 8.

10. A display device comprising the diffuser plate supporting apparatus as set forth in any one of claims 1 to 8.