CN113589587A - Backlight module and display device - Google Patents

Backlight module and display device Download PDF

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Publication number
CN113589587A
CN113589587A CN202110748899.5A CN202110748899A CN113589587A CN 113589587 A CN113589587 A CN 113589587A CN 202110748899 A CN202110748899 A CN 202110748899A CN 113589587 A CN113589587 A CN 113589587A
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China
Prior art keywords
wall
bottom plate
connecting wall
backlight module
back frame
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Granted
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CN202110748899.5A
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Chinese (zh)
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CN113589587B (en
Inventor
邹广南
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TCL China Star Optoelectronics Technology Co Ltd
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TCL China Star Optoelectronics Technology Co Ltd
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Publication of CN113589587A publication Critical patent/CN113589587A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

The embodiment of the application discloses a backlight module and a display device, wherein in the backlight module, a back frame comprises a bottom plate, side walls, a connecting wall and a limiting wall, wherein the side walls are arranged on the periphery of the bottom plate, and the side walls are connected with the bottom plate to form a groove; the connecting wall is arranged in the groove and comprises a first end and a second end which are oppositely arranged, and the first end of the connecting wall is connected to one side of the side wall far away from the bottom plate; the limiting wall is arranged on one side of the connecting wall close to the bottom plate and connected to the second end of the connecting wall; the backlight assembly is arranged in the groove and is positioned on one side of the connecting wall. In the embodiment, the backlight assembly is limited by the limiting wall, so that materials are saved; and a cavity is formed between the limiting wall and the side wall and the connecting wall connected with the limiting wall so as to buffer external force.

Description

Backlight module and display device
Technical Field
The application relates to the technical field of display, in particular to a backlight module and a display device.
Background
Most of the existing backlight structures adopt a metal frame and a rubber frame matched mode as a back frame, and a backlight assembly is arranged in the back frame to form a backlight module.
However, in the research and practice process of the prior art, the inventor of the present application finds that, in the manner that the metal frame is matched with the rubber frame, the rubber frame strip is attached inside the metal frame to support the display panel and limit the backlight assembly, but in order to limit the backlight assembly, the rubber frame strip needs to be wide enough, which wastes material.
Disclosure of Invention
The embodiment of the application provides a backlight module and a display device, which can save materials.
The embodiment of the application provides a backlight unit, it includes:
the back frame comprises a bottom plate, side walls, a connecting wall and a limiting wall, wherein the side walls are arranged on the periphery of the bottom plate, and the side walls are connected with the bottom plate to form a groove; the connecting wall is arranged in the groove and comprises a first end and a second end which are oppositely arranged, and the first end of the connecting wall is connected to one side of the side wall, which is far away from the bottom plate; the limiting wall is arranged on one side, close to the bottom plate, of the connecting wall and is connected to the second end of the connecting wall;
the backlight assembly is arranged in the groove and is positioned on one side of the connecting wall.
Optionally, in some embodiments of the present application, the limiting wall is connected to the bottom plate.
Optionally, in some embodiments of the present application, a gap is provided between the limiting wall and the bottom plate.
Optionally, in some embodiments of the present application, the backlight assembly includes a reflective sheet disposed on the bottom plate, and a width of the gap is smaller than a thickness of the reflective sheet.
Optionally, in some embodiments of the present application, the thickness of the connecting wall and the thickness of the limiting wall are the same, and the thickness of the limiting wall is greater than the thickness of the side wall.
Optionally, in some embodiments of the present application, the backlight assembly further includes a light emitting device and at least one optical film sequentially disposed on the reflective sheet.
Optionally, in some embodiments of the present application, the backlight assembly further includes a light emitting device, a first adhesive, at least one optical film, and a light guide plate disposed on the reflective sheet, the light emitting device is disposed on the bottom plate and located on a light incident side of the light guide plate, and the connecting wall shields the light emitting device; the first colloid is connected with the part of the light guide plate, which exceeds the reflector plate, and the bottom plate; at least one optical film is arranged on the light guide plate.
Optionally, in some embodiments of the present application, the backlight assembly further includes another reflective sheet and a second adhesive body, the second adhesive body is connected to a side of the connecting wall facing the light emitting device, and the another reflective sheet is connected to the second adhesive body; the other reflective sheet partially overlaps the optical film.
Optionally, in some embodiments of the present application, the back frame is an integrally formed structure.
Correspondingly, this application embodiment still provides a display device, and it includes display panel, shading glue and as above-mentioned any embodiment backlight unit, display panel sets up on the connection wall, shading glue connect in display panel's week side edge with the week side of back of the body frame.
In the embodiment of the application, the back frame comprises a bottom plate, side walls, a connecting wall and a limiting wall, wherein the side walls are arranged on the periphery of the bottom plate, and the side walls are connected with the bottom plate to form a groove; the connecting wall is arranged in the groove and comprises a first end and a second end which are oppositely arranged, and the first end of the connecting wall is connected to one side of the side wall far away from the bottom plate; the limiting wall is arranged on one side of the connecting wall close to the bottom plate and connected to the second end of the connecting wall; the backlight assembly is arranged in the groove and is positioned on one side of the connecting wall. In the embodiment, the backlight assembly is limited by the limiting wall, so that materials are saved; and a cavity is formed between the limiting wall and the side wall and the connecting wall connected with the limiting wall so as to buffer external force.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced 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 these drawings without creative efforts.
Fig. 1 is a schematic view of a first structure of a backlight module according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a second structure of a backlight module according to an embodiment of the present disclosure;
FIG. 3 is a schematic view illustrating a third structure of a backlight module according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a structure of a display device provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a backlight module and a display device, which are described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
Referring to fig. 1, an embodiment of the present application provides a backlight module 100, which includes a back frame 11 and a backlight assembly 12, wherein the backlight assembly 12 is disposed in the back frame 11.
The back frame 11 includes a bottom plate 111, side walls 112, a connecting wall 113, and a stopper wall 114. The side wall 112 is provided on the peripheral side of the bottom plate 111. The side wall 112 and the bottom plate 111 are connected to form a recess 13.
The connecting wall 113 is disposed in the recess 13. The connecting wall 113 includes a first end a1 and a second end a2 disposed oppositely, and the first end a1 of the connecting wall 113 is connected to a side of the side wall 112 away from the bottom plate 111. The limiting wall 114 is disposed on a side of the connecting wall 113 close to the bottom plate 111, and is connected to the second end a2 of the connecting wall 113.
The backlight assembly 12 is disposed in the recess 13 and at one side of the connection wall 113.
The backlight module 100 of the embodiment of the application adopts the limiting wall 114 to limit the backlight assembly 12, so as to reduce the risk of the backlight assembly 12 shifting and save materials. A cavity M is formed between the side wall 112 and the connecting wall 113 connected to the limiting wall 114 to buffer an external force, such as a pressing force to the back frame 11.
Specifically, a side of the connecting wall 113 away from the bottom plate 111 is used for disposing a display panel.
Optionally, the bottom plate 111, the side wall 112, the connecting wall 113 and the limiting wall 114 are connected in sequence to form a cavity M. The cavity M can be used to buffer external stress, save material, and reduce the weight of the back frame 11.
Optionally, a gap N is provided between the limiting wall 114 and the bottom plate 111. The gap N is provided to absorb deformation of the back frame 11 due to pressing. For example, when the connecting wall 113 is squeezed by an external force, the limiting wall 114 can move downward by a certain distance due to the existence of the gap N, so as to achieve the effect of buffering deformation; in addition, due to the existence of the gap N, the limiting wall 114 is prevented from interfering with the bottom plate 111 during the stamping or bending process of the limiting wall 114, so that the limiting wall 114 is prevented from deforming.
In addition, the stopper wall 114 also has a function of complementarily supporting the connecting wall 113. For example, when the connecting wall 113 is pressed to descend, the limiting wall 114 can support the connecting wall 113 after the width of the gap N descends.
Optionally, the plane of the connecting wall 113 is substantially parallel to the plane of the bottom plate 111. Such an arrangement allows the display panel to be flatly disposed on the backlight assembly 12.
Optionally, the extending direction of the limiting wall 114 is perpendicular to the plane of the bottom plate 111, so that the length of the limiting wall 114 can be reduced; in addition, when the back frame 11 is squeezed, the risk that the bottom plate 111 is scratched by the limiting wall 114 and even the backlight assembly 12 is pressed can be reduced.
Alternatively, the backlight assembly 12 includes a reflective sheet 121 disposed on the base plate 111. The width of the gap N is smaller than the thickness of the reflective sheet 121. The width of the gap N is set to be smaller than the thickness of the reflective sheet 121 to prevent the reflective sheet 121 from being shifted into the gap N.
Alternatively, the connecting wall 113 and the stopper wall 114 may have the same thickness. The thickness of the retaining wall 114 is greater than the thickness of the side wall 112. This arrangement improves the supporting performance of the back frame 11 for the display panel.
Optionally, in some embodiments, the thickness of each portion of the back frame 11 may be the same.
Optionally, the back frame 11 is an integrally formed structure. Compared with the mode of matching the metal frame with the rubber frame in the prior art, the arrangement improves the assembly efficiency.
In some embodiments, the parts of the back frame 11 may also be fixedly connected by mechanical connection such as welding, bonding, etc. Such as the bottom plate 111, the side wall 112, the connecting wall 113 and the limiting wall, are welded and fixed in sequence.
Alternatively, the material of the back frame 11 may be metal, such as stainless steel, aluminum alloy, titanium alloy, and the like. In this embodiment, the metal back frame 11 is adopted to improve the strength of the back frame 11, so that compared with the prior art, the rubber frame is saved, the cost is saved, and the yield is improved.
In some embodiments, the material of the back frame 11 may also be a stronger plastic or the like.
Optionally, the backlight assembly 12 further includes a light emitting device 122, at least one optical film 123, a first encapsulant 124, and a light guide plate 125 disposed on the reflective sheet 121.
The light emitting device 122 is disposed on the bottom plate 111 and on the light incident side of the light guide plate 125. The connection wall 113 shields the light emitting device 122. The first glue 124 is connected to the portion of the light guide plate 125 beyond the reflective sheet 121 and the bottom plate 111. At least one optical film 123 is disposed on the light guide plate 125.
Alternatively, the number of the optical films 123 may be a plurality of films, and for example, the optical films may include a first diffusion film, a first prism film, a second prism film, and a second diffusion film, which are stacked in sequence.
Alternatively, the light emitting device 122 may be a light emitting diode device.
Alternatively, the first glue body 124 may be a double-sided tape or other glue.
In some embodiments, the optical film 123 may also include other optical films, such as a brightness enhancement film, or the like.
Optionally, the backlight assembly 12 further includes another reflective sheet 121 and a second gel 126, and the second gel 126 is attached to a side of the connection wall 113 facing the light emitting device 122. The other reflective sheet 121 is connected to the second encapsulant 126. The other reflective sheet 121 partially overlaps the optical film 123.
The other reflector 121 is partially overlapped with the optical film 123, so that the light emitted from the side surface of the optical film 123 is reflected by the other reflector 121 to be reused, and the utilization rate of the light is improved.
Alternatively, the second glue 126 may be a double-sided tape or other glue.
Optionally, the back frame 11 of this embodiment is a square frame. Wherein three cavities M connected in sequence are formed in the three-sided region of the back frame 11. The side of the back frame 11 where the light emitting device 122 is disposed is not provided with the limiting wall 114, so that the other reflective sheet 121 can extend above the optical film 123.
Of course, the shape of the back frame 11 may be determined according to the shape of the actual display panel, and is not limited herein.
Referring to fig. 2, a backlight module 200 according to an embodiment of the present disclosure includes a back frame 11 and a backlight assembly 12, wherein the backlight assembly 12 is disposed in the back frame 11.
The back frame 11 includes a bottom plate 111, side walls 112, a connecting wall 113, and a stopper wall 114. The side wall 112 is provided on the peripheral side of the bottom plate 111. The side wall 112 and the bottom plate 111 are connected to form a recess 13.
The connecting wall 113 is disposed in the recess 13. The connecting wall 113 includes a first end a1 and a second end a2 disposed oppositely, and the first end a1 of the connecting wall 113 is connected to a side of the side wall 112 away from the bottom plate 111. The limiting wall 114 is disposed on a side of the connecting wall 113 close to the bottom plate 111, and is connected to the second end a2 of the connecting wall 113.
The backlight assembly 12 is disposed in the recess 13 and at one side of the connection wall 113.
The backlight module 200 of the present embodiment is different from the backlight module 100 of the previous embodiment in that: the stopper wall 114 is connected to the bottom plate 111. This arrangement improves the supporting performance of the back frame 11 for the display panel.
Referring to fig. 3, a backlight module 300 according to an embodiment of the present disclosure includes a back frame 11 and a backlight assembly 12, wherein the backlight assembly 12 is disposed in the back frame 11.
The back frame 11 includes a bottom plate 111, side walls 112, a connecting wall 113, and a stopper wall 114. The side wall 112 is provided on the peripheral side of the bottom plate 111. The side wall 112 and the bottom plate 111 are connected to form a recess 13.
The connecting wall 113 is disposed in the recess 13. The connecting wall 113 includes a first end a1 and a second end a2 disposed oppositely, and the first end a1 of the connecting wall 113 is connected to a side of the side wall 112 away from the bottom plate 111. The limiting wall 114 is disposed on a side of the connecting wall 113 close to the bottom plate 111, and is connected to the second end a2 of the connecting wall 113.
The backlight assembly 12 is disposed in the recess 13 and at one side of the connection wall 113.
The backlight module 300 of the present embodiment is different from the backlight module 100 or the backlight module 200 of the previous embodiment in that: the backlight assembly 12 further includes a light emitting device 122 and at least one optical film 123 sequentially disposed on the reflective sheet 121.
That is, the backlight module 300 of the present embodiment replaces the side-in type backlight of the backlight module 100 or the backlight module 200 of the above embodiments with the direct type backlight.
Since the light emitting device 122 is disposed directly below the optical film 123, the cavity M is formed in the peripheral region of the back frame 11.
Accordingly, referring to fig. 4, an embodiment of the present invention further provides a display device 1000, which includes a display panel MB, a light-shielding adhesive ZG, and the backlight module 100/200/300 according to any of the embodiments. The display panel MB is provided on the connection wall 113. The light shielding adhesive ZG is connected to the peripheral side edge of the display panel MB and the peripheral side of the back frame 11.
The display panel MB is fixedly connected to the back frame 11 through the adhesive NJ.
The display device 1000 of the present embodiment is described by taking the backlight module 100 of the above embodiment as the backlight module of the present embodiment, but is not limited thereto.
The backlight assembly 100 includes a back frame 11 and a backlight assembly 12, and the backlight assembly 12 is disposed in the back frame 11.
The back frame 11 includes a bottom plate 111, side walls 112, a connecting wall 113, and a stopper wall 114. The side wall 112 is provided on the peripheral side of the bottom plate 111. The side wall 112 and the bottom plate 111 are connected to form a recess 13.
The connecting wall 113 is disposed in the recess 13. The connecting wall 113 includes a first end a1 and a second end a2 disposed oppositely, and the first end a1 of the connecting wall 113 is connected to a side of the side wall 112 away from the bottom plate 111. The limiting wall 114 is disposed on a side of the connecting wall 113 close to the bottom plate 111, and is connected to the second end a2 of the connecting wall 113.
The backlight assembly 12 is disposed in the recess 13 and at one side of the connection wall 113.
The backlight module 100 of the embodiment of the application adopts the limiting wall 114 to limit the backlight assembly 12, so as to reduce the risk of the backlight assembly 12 shifting and save materials. A cavity M is formed between the side wall 112 and the connecting wall 113 connected to the limiting wall 114 to buffer an external force, such as a pressing force to the back frame 11.
Optionally, the bottom plate 111, the side wall 112, the connecting wall 113 and the limiting wall 114 are connected in sequence to form a cavity M. The cavity M can be used to buffer external stress, save material, and reduce the weight of the back frame 11.
Optionally, a gap N is provided between the limiting wall 114 and the bottom plate 111. The gap N is provided to absorb deformation of the back frame 11 due to pressing. For example, when the connecting wall 113 is squeezed by an external force, the limiting wall 114 can move downward by a certain distance due to the existence of the gap N, so as to achieve the effect of buffering deformation; in addition, due to the existence of the gap N, the limiting wall 114 is prevented from interfering with the bottom plate 111 during the stamping or bending process of the limiting wall 114, so that the limiting wall 114 is prevented from deforming.
In addition, the stopper wall 114 also has a function of complementarily supporting the connecting wall 113. For example, when the connecting wall 113 is pressed to descend, the limiting wall 114 can support the connecting wall 113 after the width of the gap N descends.
Optionally, the plane of the connecting wall 113 is substantially parallel to the plane of the bottom plate 111. Such an arrangement allows the display panel to be flatly disposed on the backlight assembly 12.
Optionally, the extending direction of the limiting wall 114 is perpendicular to the plane of the bottom plate 111, so that the length of the limiting wall 114 can be reduced; in addition, when the back frame 11 is squeezed, the risk that the bottom plate 111 is scratched by the limiting wall 114 and even the backlight assembly 12 is pressed can be reduced.
Alternatively, the backlight assembly 12 includes a reflective sheet 121 disposed on the base plate 111. The width of the gap N is smaller than the thickness of the reflective sheet 121. The width of the gap N is set to be smaller than the thickness of the reflective sheet 121 to prevent the reflective sheet 121 from being shifted into the gap N.
Alternatively, the connecting wall 113 and the stopper wall 114 may have the same thickness. The thickness of the retaining wall 114 is greater than the thickness of the side wall 112. This arrangement improves the supporting performance of the back frame 11 for the display panel.
Optionally, in some embodiments, the thickness of each portion of the back frame 11 may be the same.
Optionally, the back frame 11 is an integrally formed structure. Compared with the mode of matching the metal frame with the rubber frame in the prior art, the arrangement improves the assembly efficiency.
In some embodiments, the parts of the back frame 11 may also be fixedly connected by mechanical connection such as welding, bonding, etc. Such as the bottom plate 111, the side wall 112, the connecting wall 113 and the limiting wall, are welded and fixed in sequence.
Alternatively, the material of the back frame 11 may be metal, such as stainless steel, aluminum alloy, titanium alloy, and the like. In this embodiment, the metal back frame 11 is adopted to improve the strength of the back frame 11, so that compared with the prior art, the rubber frame is saved, the cost is saved, and the yield is improved.
In some embodiments, the material of the back frame 11 may also be a stronger plastic or the like.
Optionally, the backlight assembly 12 further includes a light emitting device 122, at least one optical film 123, a first encapsulant 124, and a light guide plate 125 disposed on the reflective sheet 121.
The light emitting device 122 is disposed on the bottom plate 111 and on the light incident side of the light guide plate 125. The connection wall 113 shields the light emitting device 122. The first glue 124 is connected to the portion of the light guide plate 125 beyond the reflective sheet 121 and the bottom plate 111. At least one optical film 123 is disposed on the light guide plate 125.
Alternatively, the number of the optical films 123 may be a plurality of films, and for example, the optical films may include a first diffusion film, a first prism film, a second prism film, and a second diffusion film, which are stacked in sequence.
Alternatively, the light emitting device 122 may be a light emitting diode device.
Alternatively, the first glue body 124 may be a double-sided tape or other glue.
In some embodiments, the optical film 123 may also include other optical films, such as a brightness enhancement film, or the like.
Optionally, the backlight assembly 12 further includes another reflective sheet 121 and a second gel 126, and the second gel 126 is attached to a side of the connection wall 113 facing the light emitting device 122. The other reflective sheet 121 is connected to the second encapsulant 126. The other reflective sheet 121 partially overlaps the optical film 123.
The other reflector 121 is partially overlapped with the optical film 123, so that the light emitted from the side surface of the optical film 123 is reflected by the other reflector 121 to be reused, and the utilization rate of the light is improved.
Alternatively, the second glue 126 may be a double-sided tape or other glue.
Optionally, the back frame 11 of this embodiment is a square frame. Wherein three cavities M connected in sequence are formed in the three-sided region of the back frame 11. The side of the back frame 11 where the light emitting device 122 is disposed is not provided with the limiting wall 114, so that the other reflective sheet 121 can extend above the optical film 123.
Of course, the shape of the back frame 11 may be determined according to the shape of the actual display panel, and is not limited herein.
In the display device 1000 of the embodiment of the application, the back frame 11 includes a bottom plate 111, a side wall 112, a connecting wall 113 and a limiting wall 114, the side wall 112 is disposed on the periphery side of the bottom plate 111, and the side wall 112 and the bottom plate 111 are connected to form the groove 13; the connecting wall 113 is disposed in the recess 13. The connecting wall 113 includes a first end a1 and a second end a2 disposed oppositely, and the first end a1 of the connecting wall 113 is connected to a side of the side wall 112 away from the bottom plate 111. The limiting wall 114 is disposed on a side of the connecting wall 113 close to the bottom plate 111, and is connected to the second end a2 of the connecting wall 113. The backlight assembly 12 is disposed in the recess 13 and at one side of the connection wall 113. The present embodiment employs the position-limiting wall 114 to limit the backlight assembly 12, thereby reducing the risk of the backlight assembly 12 shifting and saving material. A cavity M is formed between the side wall 112 and the connecting wall 113 connected to the limiting wall 114 to buffer an external force, such as a pressing force to the back frame 11.
The backlight module and the display device provided by the embodiment of the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, 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 application.

Claims (10)

1. A backlight module, comprising:
the back frame comprises a bottom plate, side walls, a connecting wall and a limiting wall, wherein the side walls are arranged on the periphery of the bottom plate, and the side walls are connected with the bottom plate to form a groove; the connecting wall is arranged in the groove and comprises a first end and a second end which are oppositely arranged, and the first end of the connecting wall is connected to one side of the side wall, which is far away from the bottom plate; the limiting wall is arranged on one side, close to the bottom plate, of the connecting wall and is connected to the second end of the connecting wall;
the backlight assembly is arranged in the groove and is positioned on one side of the connecting wall.
2. The backlight module as claimed in claim 1, wherein the position-limiting wall is connected to the bottom plate.
3. The backlight module as claimed in claim 1, wherein a gap is formed between the limiting wall and the bottom plate.
4. A backlight module according to claim 3, wherein the backlight assembly comprises a reflective sheet disposed on the base plate, and the gap has a width smaller than a thickness of the reflective sheet.
5. The backlight module according to any one of claims 1-4, wherein the connecting wall and the limiting wall have the same thickness, and the thickness of the limiting wall is greater than that of the side wall.
6. The backlight module as claimed in claim 4, wherein the backlight assembly further comprises a light emitting device and at least one optical film sequentially disposed on the reflective sheet.
7. The backlight module as claimed in claim 4, wherein the backlight assembly further comprises a light emitting device, a first adhesive, at least one optical film and a light guide plate disposed on the reflective sheet, the light emitting device is disposed on the bottom plate and located at the light incident side of the light guide plate, and the connecting wall shields the light emitting device; the first colloid is connected with the part of the light guide plate, which exceeds the reflector plate, and the bottom plate; at least one optical film is arranged on the light guide plate.
8. The backlight module according to claim 7, wherein the backlight assembly further comprises another reflective sheet and a second adhesive, the second adhesive is connected to a side of the connecting wall facing the light emitting devices, and the another reflective sheet is connected to the second adhesive; the other reflective sheet partially overlaps the optical film.
9. The backlight module as claimed in claim 1, wherein the back frame is of an integrally formed structure.
10. A display device comprising a display panel, a light-shielding adhesive and the backlight unit as claimed in any one of claims 1 to 9, wherein the display panel is provided on the connecting wall, and the light-shielding adhesive is connected to a peripheral side edge of the display panel and a peripheral side of the back frame.
CN202110748899.5A 2021-07-02 2021-07-02 Backlight module and display device Active CN113589587B (en)

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Citations (12)

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