CN108008575B

CN108008575B - A backlight module and display

Info

Publication number: CN108008575B
Application number: CN201810002721.4A
Authority: CN
Inventors: 陈彤; 孟小明; 马韬; 朴炳仁; 陈守年; 郑启涛; 邵林飞
Original assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Priority date: 2018-01-02
Filing date: 2018-01-02
Publication date: 2021-04-27
Anticipated expiration: 2038-01-02
Also published as: CN108008575A

Abstract

The invention provides a backlight module and a display. The backlight module includes a plastic frame and a back plate, the back plate includes a bottom plate and a side wall arranged around the periphery of the bottom plate, the first side wall in the side wall has an opening area, and the bottom plate has a bending structure in the opening area; The first side wall has a gap in a direction parallel to the first side wall and the bottom plate, the plastic frame is attached to the inner wall of the side wall, and has an opening at the first side wall; the opening end of the plastic frame has a sealable gap The length of the local retaining wall in the direction is greater than or equal to the length of the gap in the direction. The setting of the partial retaining wall prevents the light from penetrating through the gap, ensures the structural safety of the backlight assembly, and ensures the display performance of the display.

Description

Backlight module and display

Technical Field

The invention relates to the technical field of display, in particular to a backlight module and a display.

Background

The backlight module is one of the main components of an LCD (Liquid Crystal Display), and provides a light source for the LCD. The backlight module comprises a rubber frame, a light guide plate, a back plate, a glass substrate and other various elements, wherein the rubber frame is arranged between the back plate and the glass substrate, and the rubber frame plays a role in fixing a main body structure and protecting the glass substrate and other elements.

To ultra-thin narrow limit LCD, backplate among the backlight unit includes the bottom plate and the lateral wall that sets up around the bottom plate periphery, and first lateral wall in the lateral wall has the opening district, and the bottom plate is provided with the structure of buckling in the opening district, glues the frame and attaches on the inner wall of lateral wall, glues the frame and has the opening in first lateral wall department, and there is the clearance in the structure of buckling of bottom plate and the open end of gluing the frame, and the existence in clearance makes the backlight unit light leak, has reduced ultra-narrow limit LCD's display performance.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a backlight module, wherein the opening end of the rubber frame is provided with a local retaining wall, and the local retaining wall shields a gap formed by the bending structure of the bottom plate and the opening end of the rubber frame, so that light leakage of the backlight module is prevented.

On one hand, the backlight module comprises a rubber frame and a back plate;

the back plate comprises a bottom plate and side walls arranged around the periphery of the bottom plate, wherein a first side wall of the side walls is provided with an opening area, and the bottom plate is provided with a bending structure in the opening area; a gap is formed between the bending structure and the first side wall in a direction parallel to the first side wall and the bottom plate;

the rubber frame is attached to the inner wall of the side wall, and an opening is formed in the first side wall; the opening end of the rubber frame is provided with a local retaining wall capable of plugging the gap, and the length of the local retaining wall in the direction is greater than or equal to that of the gap in the direction.

Furthermore, the length of the local retaining wall in the direction is greater than that of the gap, and part of the local retaining wall is attached to the outer wall of the bent structure.

Furthermore, part of the local retaining wall and the bent structure are fixed through glue.

Further, the first side wall has a first height at the open end and a second height at the non-open end, and the height of the partial retaining wall in a third direction parallel to the first side wall and perpendicular to the bottom plate is greater than or equal to the difference between the second height and the first height; wherein the first height is less than the second height.

Furthermore, the local barricade is the plastic part, the local barricade with glue frame structure as an organic whole.

Further, the back plate is a metal back plate.

Further, the rubber frame and the metal back plate are integrally formed.

Furthermore, the rubber frame attached to the inner wall of the side wall is also provided with a bearing surface in the direction vertical to the inner wall;

the backlight module also comprises a light guide plate and a glass substrate; the light guide plate and the glass substrate are arranged on two sides of the bearing surface.

On the other hand, the display is also provided and comprises the backlight module.

Compared with the prior art, the invention has the following advantages:

the embodiment of the invention provides a backlight module and a display. The backlight module is characterized in that a gap is formed between the bending structure and the first side wall in the direction parallel to the first side wall and the bottom plate, the opening end of the rubber frame is provided with a local retaining wall capable of plugging the gap, the length of the local retaining wall in the direction is larger than or equal to the length of the gap in the direction, the local retaining wall is arranged, light rays are prevented from being transmitted out from the gap, the structural safety of the backlight module is guaranteed, and the display performance of a display is guaranteed.

Drawings

Fig. 1 is a schematic view of an overall structure of a back plate in a backlight module according to an embodiment of the present invention;

fig. 2 is a schematic partial structure diagram of a back plate in a backlight module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rubber frame in a backlight module according to an embodiment of the present invention;

fig. 4 is a schematic partial structure diagram of a backlight module according to an embodiment of the invention.

Description of the reference numerals

1. Rubber frame 11, local retaining wall 2, back plate 21 and bottom plate

211. Bending structure 22, side wall 221, first side wall

a. Gap

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the machine or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The embodiment of the invention provides a backlight module. As shown in fig. 1-4, the backlight module includes a rubber frame 1 and a back plate 2;

the back plate 2 comprises a bottom plate 21 and side walls 22 arranged around the periphery of the bottom plate 21, wherein a first side wall 221 of the side walls 22 has an opening area, the bottom plate 21 has a bent structure 211 in the opening area, and the bent structure 211 and the first side wall 221 have a gap a in a first direction parallel to the first side wall 221 and the bottom plate 21;

the rubber frame 1 is attached to the inner wall of the side wall 22, and an opening is formed in the first side wall 221; the opening end of the rubber frame 1 is provided with a partial retaining wall 11 capable of blocking the gap a, and the length of the partial retaining wall 11 in the first direction is greater than or equal to the length of the gap a in the first direction.

The partial retaining wall 11 may have various structures, such as rectangular blocking plates, and the like, and the structure of the partial retaining wall 11 may be set according to the actual structure.

Based on the structure setting and the position setting of local barricade 11 for local barricade 11 shelters from the clearance a that the structure 211 of buckling of bottom plate 21 and the open end of gluing the frame formed, thereby prevents the backlight unit light leak, has guaranteed the display performance of display.

Since the local barrier 11 is disposed outside the bending structure 211, the design space of the local barrier 11 is large, and the local barrier can be formed even in an ultra-thin narrow-edge LCD display.

The partial retaining wall 11 is used for blocking the gap a, the length of the partial retaining wall 11 in the first direction is greater than or equal to the length of the gap a in the first direction, and the specific size of the partial retaining wall 11 in each direction can be set according to the actual situation.

In a specific implementation, the length of the partial retaining wall 11 in the first direction may be greater than the length of the gap a in the first direction, and a portion of the partial retaining wall 11 is attached to the outer wall of the side wall of the bent structure 211. Further, a part of the partial retaining wall 11 and the bent structure 211 can be fixed by glue. The glue is disposed to prevent the partial wall 11 from moving in the second direction perpendicular to the first sidewall 221, thereby ensuring stability of each structure in the backlight module. The colloid may be various, such as a double-sided tape, and the like, and the kind of the colloid is not limited herein. Alternatively, a portion of the partial retaining wall 11 may be in contact with or spaced from the bent structure 211 in an unfixed state. The relationship between the local retaining wall 11 and the bending structure 211 is not limited herein.

The first sidewall 221 has a first height at the open end and a second height at the non-open end, and in order to completely block the gap a by the partial retaining wall 11, the height of the partial retaining wall 11 in a third direction parallel to the first sidewall 221 and perpendicular to the bottom plate 21 is greater than or equal to the difference between the second height and the first height, wherein the first height is less than the second height. The arrangement of the above size of the local retaining wall 11 ensures the complete shielding of the gap a, prevents light from penetrating through the gap a, and ensures the performance of the backlight module.

In a second direction perpendicular to the first sidewall 221, there is a distance between the bent structure 211 and the first sidewall 221, and the bent structure 211 is closer to the center of the bottom plate 21. The width of the partial retaining wall 11 in the second direction may be equal to the distance, so that the partial retaining wall 11 fills the space between the bent structure 211 and the first side wall 221 in the direction perpendicular to the first side wall 221 to achieve the shielding.

The material of the partial retaining wall 11 may be various, such as plastic, and in this case, the partial retaining wall 11 is a plastic member. Furthermore, the local retaining wall 11 and the rubber frame can be of an integrated structure, the manufacturing process is simplified due to the integrated structure, and the manufacturing cost is reduced.

The material of the back plate can be various, for example, the back plate can be a metal back plate. The metal back plate can be a back plate made of other materials besides the metal back plate, and the invention is not limited herein.

The rubber frame and the back plate can be manufactured by various processes, for example, the rubber frame and the metal back plate can be integrally formed or can be assembled after being formed respectively. The integrated structure simplifies the manufacturing process and reduces the manufacturing cost.

The rubber frame attached to the inner wall of the side wall can also be provided with a bearing surface in the direction perpendicular to the inner wall, and the bearing surface plays a bearing role and is used for bearing other structures. The backlight module can also comprise a light guide plate and a glass substrate, wherein the light guide plate and the glass substrate are arranged on two sides of the bearing surface.

The embodiment of the invention also provides a display which comprises the backlight module provided by the embodiment of the invention.

Since the display includes the backlight module, the display has the advantages of the backlight module, and the advantages of the display are not described herein again.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The backlight module and the display provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A backlight module is characterized by comprising a rubber frame and a back plate;

the rubber frame is attached to the inner wall of the side wall, and an opening is formed in the first side wall; the opening end of the rubber frame is provided with a local retaining wall capable of plugging the gap, and the length of the local retaining wall in the direction is greater than or equal to that of the gap in the direction;

the local retaining wall and the rubber frame are of an integrated structure;

in the direction parallel to the first side wall and the direction vertical to the first side wall, the bent structure and the first side wall are arranged in a staggered mode;

the first side wall has a first height at an open end and a second height at a non-open end, and the height of the local retaining wall in a third direction parallel to the first side wall and perpendicular to the bottom plate is greater than the difference between the second height and the first height; wherein the first height is less than the second height.

2. The backlight module as claimed in claim 1, wherein the length of the local dam in the direction is greater than that of the gap, and a portion of the local dam is attached to the outer wall of the bent structure.

3. The backlight module as claimed in claim 2, wherein the partial barriers and the bent structures are fixed by glue.

4. The backlight module as claimed in claim 1, wherein the local dam is a plastic member.

5. The backlight module as claimed in claim 1, wherein the back plate is a metal back plate.

6. The backlight module as claimed in claim 1, wherein the adhesive frame attached to the inner wall of the sidewall further has a carrying surface in a direction perpendicular to the inner wall;

7. A display comprising the backlight module of any one of claims 1-6.