WO2024239376A1 - 背光模组及显示模组 - Google Patents

背光模组及显示模组 Download PDF

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Publication number
WO2024239376A1
WO2024239376A1 PCT/CN2023/098136 CN2023098136W WO2024239376A1 WO 2024239376 A1 WO2024239376 A1 WO 2024239376A1 CN 2023098136 W CN2023098136 W CN 2023098136W WO 2024239376 A1 WO2024239376 A1 WO 2024239376A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
backlight module
light guide
lug
bottom plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/098136
Other languages
English (en)
French (fr)
Inventor
章守东
周政
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US18/264,422 priority Critical patent/US20260072309A1/en
Priority to DE112023000038.7T priority patent/DE112023000038T5/de
Publication of WO2024239376A1 publication Critical patent/WO2024239376A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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

Definitions

  • the present application relates to the field of display technology, and in particular to a backlight module and a display module.
  • the backlight module is generally composed of a back panel, a light panel, a light guide plate, an optical film group, a middle frame and auxiliary tapes.
  • the middle frame is used to support the display panel to prevent the optical film group from large displacement in the vertical direction, which may cause problems such as detachment and light leakage at the backlight edge.
  • the main materials for the middle frame are plastic injection molding or metal sheet metal stamping. As the size of the backlight module increases, the middle frame is difficult to process and assemble due to its thin wall thickness, which increases the cost and assembly process of the backlight module.
  • the embodiments of the present application provide a backlight module and a display module to solve the technical problem that when the existing backlight module uses a middle frame to support the display panel, the middle frame has a thin wall thickness and is difficult to process and assemble, which increases the cost of the backlight module and the technical problem of the assembly process.
  • the present application provides a backlight module, comprising:
  • a back plate comprising a bottom plate and a side plate connected to each other, wherein the side plate extends in the light emitting direction of the backlight module and forms a receiving space with the bottom plate, and the inner wall of the side plate is provided with at least one groove;
  • a light guide plate disposed on the bottom plate
  • An optical film assembly comprising a film body and at least one first lug, wherein the film body is located in the accommodation space, the first lug extends along the side wall of the film body toward a side close to the back plate and corresponds one-to-one with the groove, and the film body is disposed on the light guide plate;
  • the first lug extends into the corresponding groove.
  • a shading layer is provided on the side of the optical film group away from the bottom plate, and the orthographic projection of the shading layer on the bottom plate at least covers the orthographic projection of the edge of the film body on the bottom plate.
  • the light shielding layer covers the side of the first protrusion away from the bottom plate.
  • the backlight module there is a second gap between the light guide plate and the side plate, and the second gap is located on a side of the first lug close to the bottom plate.
  • the distance between the surface of the light guide plate away from the bottom plate and the bottom plate is greater than the distance between the surface of the groove close to the bottom plate and the bottom plate.
  • the backlight module further includes at least one fixing block, and the fixing block is located in the second gap and abuts against the light guide plate and the side plate.
  • the hardness of the fixing block is smaller than the hardness of the side plate and the light guide plate.
  • the light guide plate includes a connected light guide body and at least one second lug, the diaphragm body is located on the light guide body, and the first lug is located on the second lug; wherein the second lug extends into the corresponding groove.
  • a surface of the groove close to the bottom plate is flush with a surface of the bottom plate close to the second lug.
  • a buffer layer is arranged between the outer wall of the first protrusion and the corresponding inner wall of the groove.
  • the groove is formed by the inner wall of the side panel being recessed toward a side away from the optical film group; or, the groove is formed by the inner wall and outer wall of the side panel being recessed toward a side away from the optical film at the same time.
  • the present application provides a display module, including a backlight module
  • a display panel is located on the light-emitting side of the backlight module.
  • a cover plate located at a side of the display panel away from the backlight module and fixedly connected to the display panel;
  • the cover plate is fixedly connected to the end surface of the side plate away from the bottom plate;
  • the backlight module comprises:
  • a back plate comprising a bottom plate and a side plate connected to each other, wherein the side plate extends in the light emitting direction of the backlight module and forms a receiving space with the bottom plate, and the inner wall of the side plate is provided with at least one groove;
  • a light guide plate disposed on the bottom plate
  • An optical film assembly comprising a film body and at least one first lug, wherein the film body is located in the accommodation space, the first lug extends along the side wall of the film body toward a side close to the back plate and corresponds one-to-one with the groove, and the film body is disposed on the light guide plate;
  • the first lug extends into the corresponding groove.
  • a shading layer is provided on a side of the optical film group away from the base plate, and the orthographic projection of the shading layer on the base plate at least covers the orthographic projection of the edge of the film body on the base plate.
  • the light shielding layer covers a side of the first protrusion away from the bottom plate.
  • the display panel provided in the present application, there is a second gap between the light guide plate and the side plate, and the second gap is located on a side of the first lug close to the bottom plate.
  • the distance between the surface of the light guide plate away from the bottom plate and the bottom plate is greater than the distance between the surface of the groove close to the bottom plate and the bottom plate.
  • the backlight module further includes at least one fixing block, and the fixing block is located in the second gap and abuts against the light guide plate and the side plate.
  • the light guide plate includes a connected light guide body and at least one second lug, the diaphragm body is located on the light guide body, and the first lug is located on the second lug; wherein the second lug extends into the corresponding groove.
  • the backlight module and the display module provided by the present application are provided with at least one groove on the inner wall of the side plate of the back plate, and the side wall of the diaphragm body extends toward the side close to the back plate to form at least one first lug, the first lug extends into the corresponding groove, and the first lug is used in combination with the groove to support the display panel, thereby replacing the middle frame also used to support the display panel in the related art.
  • the cancellation of the middle frame can reduce module deformation, which is beneficial to reducing assembly steps and reducing assembly difficulty and cost; in addition, the groove can play a limiting role to prevent the optical diaphragm group from having a large displacement in the vertical direction and jumping off.
  • FIG1 is a schematic diagram of a first cross-sectional structure of a backlight module provided in an embodiment of the present application
  • FIG2 is a schematic diagram of the planar structure of the optical film group of the backlight module in FIG1;
  • FIG3 is a schematic diagram of a second cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of a third cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a fourth cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of a fifth cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a cross-sectional structure of a display module provided in an embodiment of the present application.
  • Backlight module 10. Back plate; 101. Bottom plate; 102. Side plate; 1021. Groove; 1022. Inner wall; 1023. Outer wall; 11. Light guide plate; 111. Light guide body; 112. Second lug; 12. Optical film group; 121. Film body; 122. First lug; 13. Shading layer; 14. Fixing block; 15. Buffer layer; 16. Reflective film; 2. Display panel; 3. Cover plate; 4. First adhesive layer; 5. Second adhesive layer.
  • the present application provides a backlight module and a display module.
  • the backlight module and the display module provided by the present application will be described in detail below in combination with specific embodiments and drawings.
  • Figure 1 is a schematic diagram of the first cross-sectional structure of the backlight module provided in the embodiment of the present application
  • Figure 2 is a schematic diagram of the planar structure of the optical film group of the backlight module in Figure 1.
  • the embodiment of the present application provides a backlight module 1, the backlight module 1 includes a back plate 10, a light guide plate 11 and an optical film group 12.
  • the backlight module can be a vehicle-mounted backlight module.
  • the back plate 10 comprises a bottom plate 101 and a side plate 102 connected to each other.
  • the side plate 102 extends in the light emitting direction of the backlight module 1 and forms a receiving space with the bottom plate 101.
  • the inner wall 1022 of the side plate 102 is provided with at least one groove 1021.
  • the light guide plate 11 is arranged on the bottom plate 101 and fixedly connected to the bottom plate 101.
  • the optical film set 12 includes a film body 121 and at least one first lug 122, the film body 121 is located in the accommodation space, the first lug 122 extends along the side wall of the film body 121 toward the side close to the back plate 10 and corresponds to the groove 1021 one by one, and the film body 121 is arranged on the light guide plate 11.
  • the first lug 122 extends into the corresponding groove 1021.
  • the embodiment of the present application replaces the middle frame used to support the display panel in the related art by matching the first lug 122 with the groove 1021 to support the display panel, so the middle frame can be eliminated, which can reduce module deformation, help reduce assembly procedures, and reduce assembly difficulty and cost.
  • the groove 1021 can limit the first lug 122.
  • the inner wall of the groove 1021 located on the side of the first lug 122 away from the bottom plate 101 blocks the shaking of the first lug 122, that is, the groove 1021 limits the displacement of the optical film group 12 in the vertical direction, thereby preventing the optical film group 12 from jumping off due to a large displacement in the vertical direction during the vibration test, and avoiding friction with the display panel located above it.
  • the bottom plate 101 is rectangular in shape as a whole, and the side plates 102 are distributed along the outer edge contour of the bottom plate 101.
  • the number of the side plates 102 is 4, and each of the side plates 102 is arranged on the four sides of the bottom plate 101.
  • the bottom plate 101 is a die-casting part, which is formed by stamping a metal material, and the side plates 102 are formed by bending the bottom plate 101.
  • the number of the grooves 1021 can be multiple, and the grooves 1021 are provided on each of the side panels 102.
  • the number of the grooves 1021 on each of the side panels 102 is the same, and at least two grooves 1021 are provided on each of the side panels 102, and are evenly distributed.
  • two grooves 1021 are provided on each of the side panels 102, and the two grooves 1021 on the two side panels 102 arranged opposite to each other are arranged opposite to each other.
  • the number of the groove 1021 may also be one, and the groove 1021 is located on the four side panels 102 and surrounds to form a closed structure, that is, the groove 1021 may be arranged in a circle.
  • the optical film set 12 is rectangular as a whole, and the number of the first lugs 122 can be multiple, and the first lugs 122 are arranged on each side of the optical film set 12.
  • the number of the first lugs 122 on each side is the same, and at least two first lugs 122 are arranged on each side, and are evenly distributed.
  • two first lugs 122 are arranged on each side, and the first lugs 122 on the two opposite sides are arranged opposite to each other.
  • the risk of jumping out is reduced by making the density of the first lug 122 located near the head and tail ends of each side panel 102 greater than the density of the first lug 122 located in the middle area of each side panel 102, or by making the length of the first lug 122 located near the head and tail ends of each side panel 102 greater than the length of the first lug 122 located in the middle area of each side panel 102.
  • the size of the groove 1021 located near the head and tail ends of each side plate 102 is greater than the length of the groove 1021 located in the middle area of each side plate 102 .
  • the optical film set 12 includes one or more of a diffusion film, a light enhancement film, a brightness enhancement film, or an anti-peep film, etc.
  • the optical film set 12 includes a diffusion film, a light enhancement film, and an anti-peep film, and the diffusion film, the light enhancement film, and the anti-peep film are bonded into a whole by an adhesive tape.
  • the outer wall 1023 of the first lug 122 there is a first gap between the outer wall 1023 of the first lug 122 and the inner wall 1022 of the corresponding groove 1021 to leave a certain amount of redundant space, so as to prevent the optical film group 12 from being unable to expand freely at high temperatures and causing ripples.
  • the inner wall 1022 of the groove 1021 refers to the side of the first lug 122 close to the accommodation space
  • the outer wall 1023 of the first lug 122 refers to the side of the first lug 122 away from the accommodation space.
  • the above gap is a gap in the horizontal direction, which depends on two factors: one is the expansion gap, which needs to prevent the first lug 122 from expanding at high temperature and not hitting the inner wall 1022 of the groove 1021; the other is the film pressing amount, that is, the distance that the optical film group 12 extends into the groove 1021, which should prevent the optical film group 12 from shrinking at low temperature and shrinking outside the groove 1021. These two distances are related to the size of the optical film group 12 and the high and low temperature expansion and contraction coefficients. In actual application scenarios, the above parameters should be determined according to specific circumstances.
  • a shading layer 13 is provided on a side of the optical film group 12 away from the base plate 101, and the orthographic projection of the shading layer 13 on the base plate 101 at least covers the orthographic projection of the edge of the film body 121 on the base plate 101.
  • the shading layer 13 is used to block the bright lines on the edges of the optical film group 12, which can prevent optical reflection or refraction problems caused by uneven edges of the optical film group 12, and prevent the optical film group 12 from having bright lines on the edges, which affects the display effect.
  • the edge refers to the outer edge of the optical film group 12, and specifically, refers to the outer edge of the film body 121.
  • the shading layer 13 may only cover the edge of the diaphragm body 121. Furthermore, the shading layer 13 may also cover the edges of the first lug 122 and the diaphragm body 121 at the same time. Specifically, the edge of the shading layer 13 close to the side panel 102 is flush with the edge of the first lug 122 close to the side panel 102 in the vertical direction.
  • the light shielding layer 13 may also cover a side of the first lug 122 away from the bottom plate 101 .
  • the light shielding layer 13 includes black ink or black light shielding tape.
  • the light shielding layer 13 can be directly formed on the optical film set 12, or can be attached to the optical film set 12 after being formed.
  • the edge of the film body 121 is flush with the edge of the light guide plate 11. In other embodiments, in the top view, the edge of the light guide plate 11 is closer to the adjacent side plate 102 than the edge of the film body 121. In one embodiment, as shown in FIG. 2 , the groove 1021 is formed by the inner wall 1022 of the side plate 102 being recessed toward a side away from the optical film assembly 12.
  • a reflective film 16 is provided between the light guide plate 11 and the bottom plate 101, and the reflective film 16 is used to reflect the light incident on the surface of the reflective film 16 to the side of the light guide plate 11 close to the optical film group 12, which is beneficial to improve the light extraction efficiency.
  • the reflective film 16 has the function of double-sided tape to fix the light guide plate 11 on the bottom plate 101, prevent the light guide plate 11 from shaking, and reduce the risk of jumping out of position.
  • FIG3 is a schematic diagram of a second cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • the difference between FIG3 and FIG2 is that the groove 1021 is formed by the inner wall and the outer wall of the side panel 102 being recessed toward the side away from the optical film group 12 at the same time, that is, the inner wall 1022 and the outer wall 1023 of the side panel 102 form a bulge.
  • this embodiment can increase the depth of the groove 1021 in the horizontal direction, which is conducive to improving the fixing effect of the first lug 122, thereby further preventing the optical film group 12 from jumping off.
  • the distance between the surface of the light guide plate 11 away from the base plate 101 and the base plate 101 is greater than the distance between the surface of the groove 1021 close to the base plate 101 and the base plate 101, that is, the surface of the light guide plate 11 away from the base plate 101 is higher than the surface of the groove 1021 close to the base plate 101, so that the first protrusion 122 located above the light guide plate 11 can smoothly extend into the groove 1021.
  • FIG. 4 is a schematic diagram of the third cross-sectional structure of the backlight module provided in the embodiment of the present application.
  • the backlight module 1 also includes at least one fixed block 14, and the fixed block 14 is located in the second gap and abuts against the light guide plate 11 and the side plate 102.
  • the fixed block 14 serves to connect the back plate 10 and the light guide plate 11 to prevent the light guide plate 11 from shaking left and right, and also to prevent the light guide plate 11 from falling off from the accommodating space and affecting normal light output.
  • the fixed block 14 is fixed to the light guide plate 11 and the side plate 102 by means of interference fit, and the fixation is achieved by means of the friction between the fixed block 14 and the light guide plate 11 and the side plate 102.
  • the fixed block 14 can also be fixed between the light guide plate 11 and the side plate 102 by means of snap-fit.
  • a side of the fixing block 14 away from the bottom plate 101 is lower than a side of the groove 1021 close to the bottom plate 101 .
  • the hardness of the fixing block 14 is smaller than the hardness of the side panel 102 and the light guide plate 11, and the fixing block 14 is a flexible block, and the flexible block is one of a rubber block and a silicone block.
  • the flexible block can play a certain buffering role while playing the role of fixed connection, which is beneficial to prevent the light guide plate 11 from colliding with the back panel 10 when shaking, causing damage to the light guide plate 11 and affecting the optical performance.
  • FIG. 5 is a schematic diagram of a fourth cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • FIG. 5 is different from FIG. 2 in that the light guide plate 11 includes a light guide body 111 and at least one second lug 112 connected to each other, the film body 121 is located on the light guide body 111, the first lug 122 is located on the second lug 112 and corresponds to the second lug 112 one by one; wherein the second lug 112 extends into the corresponding groove 1021.
  • the surface of the groove 1021 close to the bottom plate 101 is flush with the surface of the bottom plate 101 close to the second lug 112 , that is, the lower wall of the groove 1021 is the bottom plate 101 , that is, the lower end of the groove 1021 passes through the side plate 102 and exposes the bottom plate 101 .
  • FIG. 6 is a schematic diagram of a fifth cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • FIG. 6 is different from FIG. 2 in that a buffer layer 15 is provided between the outer wall 1023 of the first lug 122 and the corresponding inner wall 1022 of the groove 1021 to prevent the first lug 122 from colliding with the groove 1021 and causing damage.
  • the buffer layer 15 can be an organic material, such as foam.
  • the backlight module 1 further includes a light source (not shown in the figure), which can be a backlight type, and is arranged on a side of the side plate 102 close to the light guide plate 11, and the light emitting surface of the light source is arranged opposite to the light guide plate 11.
  • the light source can be an organic light emitting diode.
  • the backlight module 1 further includes a circuit board (not shown in the figure), which is electrically connected to the light source and is used to control the on and off of the light source.
  • the circuit board includes a soft board, such as a flexible circuit board, but is not limited thereto.
  • the circuit board also includes a hard board, such as a PCB or a ceramic board.
  • the embodiment of the present application further provides a display module, which may be a vehicle-mounted display module.
  • the display module includes the backlight module 1 in the above embodiment, as well as a display panel 2 and a cover plate 3.
  • the display panel 2 is located on the light-emitting side of the backlight module 1.
  • the cover plate 3 is located on a side of the display panel 2 away from the backlight module 1 and is fixedly connected to the display panel 2.
  • the cover plate 3 is fixedly connected to the end surface of the side plate 102 away from the bottom plate 101.
  • the display panel 2 may be a liquid crystal display panel, and the backlight module 1 is used to provide backlight for the liquid crystal display panel.
  • the liquid crystal display panel may include a color filter substrate and an array substrate arranged opposite to each other, and a liquid crystal layer arranged between the color filter substrate and the array substrate. Since this is a related technology, it will not be described in detail here.
  • the array substrate is closer to the optical film group 12 than the color filter substrate.
  • the cover plate 3 may be a glass cover plate 3 , and the cover plate 3 and the side plate 102 may be connected by a first adhesive layer 4 , and the first adhesive layer 4 may be an OCA optical adhesive or an OCR adhesive.
  • the current OCA optical glue has sufficient bonding strength to ensure the connection stability between the cover plate 3 and the back plate 10.
  • the display panel 2 and the cover plate 3 are connected via a second bonding layer 5, and the material of the second bonding layer 5 can be the same as that of the first bonding layer 4, which is also OCA optical glue, to ensure the connection stability between the display panel 2 and the cover plate 3.
  • the display module may be a vehicle-mounted display module, which includes a car display screen, a vehicle-mounted central control, a vehicle-mounted instrument display, and the like.
  • the backlight module and the display module provided by the present application are provided with at least one groove on the inner wall of the side plate of the back plate, and the side wall of the diaphragm body extends toward the side close to the back plate to form at least one first lug, the first lug extends into the corresponding groove, and the first lug is used in combination with the groove to support the display panel, thereby replacing the middle frame used to support the display panel in the related art.
  • the cancellation of the middle frame can reduce module deformation, which is beneficial to reducing assembly steps, and reducing assembly difficulty and cost.
  • the groove can play a limiting role to prevent the optical diaphragm group from having a large displacement in the vertical direction and jumping off.

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

Abstract

本申请公开了一种背光模组及显示模组，背光模组包括背板、导光板和光学膜片组。背板包括相连接的底板和侧板，侧板的内壁设有至少一凹槽；导光板设于底板上；光学膜片组包括膜片本体和至少一第一凸耳，第一凸耳沿膜片本体的侧壁向靠近背板的一侧延伸且与凹槽一一对应，膜片本体设于导光板上；第一凸耳延伸至对应的凹槽内。

Description

背光模组及显示模组 技术领域
本申请涉及显示技术领域，尤其涉及一种背光模组及显示模组。
 背景技术
背光模组一般是由背板，灯板，导光板，光学膜片组，中框和辅材胶带组成，中框用于支撑显示面板，防止光学膜片组在垂直方向出现较大位移，出现跳脱问题以及背光边缘漏光的问题，但中框的主要选材为塑胶类注塑成型或者金属类钣金冲压成型，随着背光模组尺寸的增加，由于中框壁厚较薄难以加工，不易组装，增加了背光模组的成本和组装工序。
 发明概述
本申请实施例提供一种背光模组及显示模组，以解决现有的背光模组使用中框来支撑显示面板时，中框壁厚较薄难以加工，不易组装，增加了背光模组的成本和组装工序的技术问题。
为解决上述问题，本申请提供的技术方案如下：
本申请提供一种背光模组，包括：
背板，包括相连接的底板和侧板，所述侧板向所述背光模组的出光方向延伸并与所述底板形成有一容纳空间，所述侧板的内壁设有至少一凹槽；
导光板，设于所述底板上；以及
光学膜片组，包括膜片本体和至少一第一凸耳，所述膜片本体位于所述容纳空间内，所述第一凸耳沿所述膜片本体的侧壁向靠近所述背板的一侧延伸且与所述凹槽一一对应，所述膜片本体设于所述导光板上；
其中，所述第一凸耳延伸至对应的所述凹槽内。
根据本申请提供的背光模组，所述第一凸耳的外壁与对应的所述凹槽内壁之间存在第一间隙。
根据本申请提供的背光模组，所述光学膜片组远离所述底板的一侧设置有遮光层，所述遮光层在所述底板上的正投影至少覆盖所述膜片本体的边缘在所述底板上的正投影。
根据本申请提供的背光模组，所述遮光层覆盖所述第一凸耳远离所述底板的一侧。
根据本申请提供的背光模组，所述导光板与所述侧板之间存在第二间隙，所述第二间隙位于所述第一凸耳靠近所述底板的一侧。
根据本申请提供的背光模组，所述导光板远离所述底板一侧的表面与所述底板之间的距离，大于所述凹槽靠近所述底板一侧的表面与所述底板之间的距离。
根据本申请提供的背光模组，所述背光模组还包括至少一固定块，所述固定块位于所述第二间隙内且与所述导光板和所述侧板相抵靠。
根据本申请提供的背光模组，所述固定块的硬度小于所述侧板及所述导光板的硬度。
根据本申请提供的背光模组，所述导光板包括相连接的导光本体和至少一第二凸耳，所述膜片本体位于所述导光本体上，所述第一凸耳位于所述第二凸耳上；其中，所述第二凸耳延伸至对应的所述凹槽内。
根据本申请提供的背光模组，所述凹槽靠近所述底板一侧的表面与所述底板靠近所述第二凸耳一侧的表面平齐。
根据本申请提供的背光模组，所述第一凸耳的外壁与对应的所述凹槽内壁之间设置有缓冲层。
根据本申请提供的背光模组，所述凹槽为所述侧板的所述内壁向远离所述光学膜片组的一侧凹陷形成的；或者，所述凹槽为所述侧板的所述内壁和外壁同时向远离所述光学膜片的一侧凹陷形成的。
本申请提供一种显示模组，包括背光模组；
显示面板，位于所述背光模组的出光侧；以及
盖板，位于所述显示面板远离所述背光模组的一侧且与所述显示面板固定连接；
其中，所述盖板与所述侧板远离所述底板的一侧的端面固定连接；
所述背光模组，包括：
背板，包括相连接的底板和侧板，所述侧板向所述背光模组的出光方向延伸并与所述底板形成有一容纳空间，所述侧板的内壁设有至少一凹槽；
导光板，设于所述底板上；以及
光学膜片组，包括膜片本体和至少一第一凸耳，所述膜片本体位于所述容纳空间内，所述第一凸耳沿所述膜片本体的侧壁向靠近所述背板的一侧延伸且与所述凹槽一一对应，所述膜片本体设于所述导光板上；
其中，所述第一凸耳延伸至对应的所述凹槽内。
根据本申请提供的显示面板，其中，所述第一凸耳的外壁与对应的所述凹槽内壁之间存在第一间隙。
根据本申请提供的显示面板，所述光学膜片组远离所述底板的一侧设置有遮光层，所述遮光层在所述底板上的正投影至少覆盖所述膜片本体的边缘在所述底板上的正投影。
根据本申请提供的显示面板，所述遮光层覆盖所述第一凸耳远离所述底板的一侧。
根据本申请提供的显示面板，所述导光板与所述侧板之间存在第二间隙，所述第二间隙位于所述第一凸耳靠近所述底板的一侧。
根据本申请提供的显示面板，所述导光板远离所述底板一侧的表面与所述底板之间的距离，大于所述凹槽靠近所述底板一侧的表面与所述底板之间的距离。
根据本申请提供的显示面板，所述背光模组还包括至少一固定块，所述固定块位于所述第二间隙内且与所述导光板和所述侧板相抵靠。
根据本申请提供的显示面板，所述导光板包括相连接的导光本体和至少一第二凸耳，所述膜片本体位于所述导光本体上，所述第一凸耳位于所述第二凸耳上；其中，所述第二凸耳延伸至对应的所述凹槽内。
有益效果
本申请的有益效果为：本申请提供的背光模组及显示模组，通过在背板的侧板的内壁设有至少一凹槽，以及膜片本体的侧壁向靠近所述背板的一侧延伸形成至少一第一凸耳，第一凸耳延伸至对应的所述凹槽内，利用第一凸耳与凹槽搭配以支撑显示面板，取代了相关技术中同样用于支撑显示面板的中框，可取消中框能够减少模组变形，有利于减少组装工序，降低组装难度和成本；此外，凹槽能够起到限位作用，以防止光学膜片组在垂直方向出现较大位移而出现跳脱。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的背光模组的第一种截面结构示意图；
图2是图1中的背光模组的光学膜片组的平面结构示意图；
图3是本申请实施例提供的背光模组的第二种截面结构示意图；
图4是本申请实施例提供的背光模组的第三种截面结构示意图；
图5是本申请实施例提供的背光模组的第四种截面结构示意图；
图6是本申请实施例提供的背光模组的第五种截面结构示意图；
图7是本申请实施例提供的一种显示模组的截面结构示意图。
附图标记说明：
1、背光模组；10、背板；101、底板；102、侧板；1021、凹槽；1022、内壁；1023、外壁；11、导光板；111、导光本体；112、第二凸耳；12、光学膜片组；121、膜片本体；122、第一凸耳；13、遮光层；14、固定块；15、缓冲层；16、反射膜；2、显示面板；3、盖板；4、第一粘接层；5、第二粘接层。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向；而“内”和“外”则是针对装置的轮廓而言的。
针对相关技术中的背光模组及显示模组使用中框来支撑显示面板时，存在中框壁厚较薄难以加工，不易组装，增加了背光模组的成本和组装工序的技术问题，本申请提供一种背光模组及显示模组，以下将结合具体实施例及附图对本申请提供的背光模组及显示模组进行详细描述。
请参阅图1和图2，图1是本申请实施例提供的背光模组的第一种截面结构示意图，图2是图1中的背光模组的光学膜片组的平面结构示意图。本申请实施例提供一种背光模组1，所述背光模组1包括背板10、导光板11和光学膜片组12。所述背光模组可以为车载背光模组。
所述背板10包括相连接的底板101和侧板102，所述侧板102向所述背光模组1的出光方向延伸并与所述底板101形成有一容纳空间，所述侧板102的内壁1022设有至少一凹槽1021。所述导光板11设于所述底板101上且与所述底板101固定连接。
所述光学膜片组12包括膜片本体121和至少一第一凸耳122，所述膜片本体121位于所述容纳空间内，所述第一凸耳122沿所述膜片本体121的侧壁向靠近所述背板10的一侧延伸且与所述凹槽1021一一对应，所述膜片本体121设于所述导光板11上。其中，所述第一凸耳122伸入对应的所述凹槽1021内。
可以理解的是，本申请实施例通过将所述第一凸耳122与所述凹槽1021搭配以支撑显示面板，取代了相关技术中同样用于支撑显示面板的中框，故可取消中框，能够减少模组变形，有利于减少组装工序，降低组装难度和成本。此外，所述凹槽1021能够对所述第一凸耳122起到限位作用，所述凹槽1021位于所述第一凸耳122远离所述底板101的一侧的内壁对所述第一凸耳122的晃动造成阻挡，即所述凹槽1021对所述光学膜片组12在垂直方向上的位移起到限制作用，从而防止所述光学膜片组12在震动实验时在垂直方向出现较大位移而发生跳脱，避免与位于其上方的显示面板产生摩擦。
一般的，所述底板101整体呈矩形，所述侧板102沿所述底板101的外边缘轮廓分布。所述侧板102的数量为4，各个所述侧板102设置于所述底板101的4个侧边上。可选的，所述底板101为压铸件，采用金属材料冲压成型，所述侧板102由所述底板101弯曲形变成型。
具体的，为了提升所述光学膜片组12的固定强度，进一步限制所述光学膜片组12沿某一方向发生移位，在本申请实施例中，所述凹槽1021的数量可以为多个，在每一所述侧板102上均设置有所述凹槽1021。优选的，每一所述侧板102上的所述凹槽1021的数量相同，每一所述侧板102上设置有至少两个所述凹槽1021，且均匀分布。示例性的，每一所述侧板102上设置有两个所述凹槽1021，相对设置的两个侧板102上的两个所述凹槽1021彼此正对设置。
在其他实施例中，所述凹槽1021的数量也可以为一个，所述凹槽1021位于4个所述侧板102上，并且围绕形成闭合结构，也即是说，所述凹槽1021可以设置成一圈。
相应的，所述光学膜片组12整体呈矩形，所述第一凸耳122的数量可以为多个，在所述光学膜片组12的每一侧边上均设置有所述第一凸耳122。在一种实施例中，每一侧边上的所述第一凸耳122的数量相同，每一侧边上设置有至少两个所述第一凸耳122，且均匀分布。示例性的，每一侧边上设置有两个所述第一凸耳122，相对设置的两个侧边上的所述第一凸耳122彼此正对设置。
在其他实施例中，由于所述第一凸耳122在两条相邻的所述侧板102连接处（即边角处）更容易发生跳脱风险，因此，通过将位于靠近每一所述侧板102首尾两端位置处的所述第一凸耳122的密度大于位于每一所述侧板102中间区域位置处的所述第一凸耳122的密度，或者，通过将位于靠近每一所述侧板102首尾两端位置处的所述第一凸耳122的长度大于位于每一所述侧板102中间区域位置处的所述第一凸耳122的长度，以降低跳脱风险。
进一步地，在所述侧板102的长度方向上，位于靠近每一所述侧板102首尾两端位置处的所述凹槽1021的尺寸大于位于每一所述侧板102中间区域位置处的所述凹槽1021的长度。
具体的，所述光学膜片组12包括例如为扩散膜、增光膜、增亮膜或防窥膜等其中的一种或多种。例如，在本实施例中，所述光学膜片组12包括扩散膜、增光膜和防窥膜，所述扩散膜、所述增光膜和所述防窥膜通过胶带粘接成一个整体。
进一步地，在本申请实施例中，所述第一凸耳122的外壁1023与对应的所述凹槽1021的内壁1022之间存在第一间隙，以留出一定的冗余空间，从而能够避免所述光学膜片组12在高温时无法自由膨胀而出现波浪纹。其中，所述凹槽1021的内壁1022是指所述第一凸耳122靠近所述容纳空间的一侧，所述第一凸耳122的外壁1023是指所述第一凸耳122远离所述容纳空间的一侧。
需要说明的是，上述间隙为水平方向上的间隙，其取决于两个因素，一是膨胀空隙，需要避免所述第一凸耳122在高温时发生膨胀，不能顶到所述凹槽1021的内壁1022；二是压膜量，即所述光学膜片组12伸入所述凹槽1021的距离，应避免所述光学膜片组12低温收缩而缩小到凹槽1021外。这两个距离与所述光学膜片组12的尺寸以及高低温涨缩系数相关，在实际应用场景中，应根据具体情况来确定上述参数。
进一步的，所述光学膜片组12远离所述底板101的一侧设置有遮光层13，所述遮光层13在所述底板101上的正投影至少覆盖所述膜片本体121的边缘在所述底板101上的正投影，相关技术中，由于中框是不透明的，能够遮挡的所述光学膜片组12边缘亮线，但本申请实施例由于取消了所述中框，因此，采用遮光层13来起到遮挡所述光学膜片组12边缘亮线的作用，能够防止因所述光学膜片组12的边缘不平齐，出现光学反射或折射问题，防止所述光学膜片组12出现边缘亮线，影响显示效果，其中，所述边缘是指所述光学膜片组12的外边缘，具体的，是指所述膜片本体121的外边缘。
需要说明的是，所述遮光层13可以仅覆盖所述膜片本体121的边缘，进一步的，所述遮光层13也可以同时覆盖所述第一凸耳122和所述膜片本体121的边缘，具体的，所述遮光层13靠近所述侧板102的一侧边缘与所述第一凸耳122靠近所述侧板102的一侧边缘在垂直方向上平齐。
进一步的，所述遮光层13还可覆盖所述第一凸耳122远离所述底板101的一侧。
可选的，所述遮光层13包括黑色油墨或黑色遮光胶带中的一种。所述遮光层13可以直接形成于所述光学膜片组12上，也可以形成之后贴附于所述光学膜片组12上。
在本实施例中，在俯视方向上，所述膜片本体121的边缘与所述导光板11的边缘平齐。在其他实施例中，在俯视方向上，所述导光板11的边缘相较于所述膜片本体121的边缘更靠近邻近的所述侧板102。在一种实施例中，如图2所示，所述凹槽1021为所述侧板102的所述内壁1022向远离所述光学膜片组12的一侧凹陷形成的。
在本申请实施例中，所述导光板11和所述底板101之间设置有反射膜16，所述反射膜16用于对射入到所述反射膜16表面上的光线进行反射至导光板11靠近所述光学膜片组12的一侧，有利于提高出光效率。同时，所述反射膜16具有双面胶的作用，以固定所述导光板11在所述底板101上，避免所述导光板11发生晃动，减少发生跳脱移位的风险。
在另一种实施例中，请参阅图3，图3是本申请实施例提供的背光模组的第二种截面结构示意图。图3与图2的不同之处在于，所述凹槽1021为所述侧板102的所述内壁和外壁同时向远离所述光学膜片组12的一侧凹陷形成的，即，所述侧板102的所述内壁1022和所述外壁1023形成一凸起，由于所述侧板102的在水平方向上的厚度有限，相较于仅有所述侧板102的所述内壁1022向远离所述光学膜片组12的一侧凹陷的做法，本实施例能够提高所述凹槽1021在水平方向上的深度，有利于提升所述第一凸耳122的固定效果，从而进一步避免所述光学膜片组12发生跳脱。
在本申请中，如图1和图3所示，所述导光板11与所述侧板102之间存在第二间隙，所述第二间隙位于所述第一凸耳122靠近所述底板101的一侧，以给所述导光板11留有冗余空间，以避免所述导光板11与所述侧板102接触而造成所述导光板11损坏。
进一步的，所述导光板11远离所述底板101一侧的表面与所述底板101之间的距离，大于所述凹槽1021靠近所述底板101一侧的表面与所述底板101之间的距离，即，所述导光板11远离所述底板101一侧的表面高于所述凹槽1021靠近所述底板101一侧的表面，以使位于所述导光板11上方的第一凸耳122能够顺利延伸至所述凹槽1021内。
在一种实施例中，请参阅图4，图4是本申请实施例提供的背光模组的第三种截面结构示意图。图4与图1的不同之处在于，所述背光模组1还包括至少一固定块14，所述固定块14位于所述第二间隙内且与所述导光板11和所述侧板102相抵靠，所述固定块14起到连接所述背板10和所述导光板11的作用，以防止所述导光板11左右晃动，同时也避免所述导光板11从所述容纳空间内脱落，影响正常出光。在本实施例中，所述固定块14与所述导光板11及所述侧板102之间通过过盈配合的方式固定，利用所述固定块14与所述导光板11及所述侧板102之间的摩擦力实现固定。在其他实施例中，所述固定块14也可以通过卡接的方式固定在所述导光板11与所述侧板102之间。
在本申请中，所述固定块14远离所述底板101的一侧低于所述凹槽1021靠近所述底板101的一侧。
可选的，所述固定块14的硬度小于所述侧板102及所述导光板11的硬度，所述固定块14为柔性块，所述柔性块为橡胶块或硅胶块中的其中一种，所述柔性块在起到固定连接的作用的同时，能够起到一定的缓冲作用，有利于防止所述导光板11晃动时与所述背板10发生碰撞，造成所述导光板11损坏，影响光学性能。
在一种实施例中，请参阅图5，图5是本申请实施例提供的背光模组的第四种截面结构示意图。图5与图2的不同之处在于，所述导光板11包括相连接的导光本体111和至少一第二凸耳112，所述膜片本体121位于所述导光本体111上，所述第一凸耳122位于所述第二凸耳112上且与所述第二凸耳112一一对应；其中，所述第二凸耳112伸入对应的所述凹槽1021内。
进一步的，所述凹槽1021靠近所述底板101一侧的表面与所述底板101靠近所述第二凸耳112一侧的表面平齐，即，所述凹槽1021的下壁为所述底板101，即所述凹槽1021的下端贯穿所述侧板102，并暴露出所述底板101。
在一种实施例中，请参阅图6，图6是本申请实施例提供的背光模组的第五种截面结构示意图。图6与图2的不同之处在于，所述第一凸耳122的外壁1023与对应的所述凹槽1021的内壁1022之间设置有缓冲层15，以避免所述第一凸耳122与所述凹槽1021发生碰撞造成损坏。具体的，所述缓冲层15可以为有机材料，例如泡棉。
所述背光模组1还包括光源（图中未示出），所述光源可以采用背光式，所述光源设置于所述侧板102靠近所述导光板11的一侧，所述光源的出光面与所述导光板11正对设置。具体的，所述光源可以为有机发光二极管。
进一步的，所述背光模组1还包括电路板（图中未示出），所述电路板与所述光源电连接，用于控制所述光源的开启与关闭。可选的，所述电路板包括软板，例如柔性电路板，但并不以此为限，例如所述电路板还包括硬板，例如PCB或陶瓷板等。
请参阅图7，本申请实施例还提供一种显示模组，所述显示模组可以为车载显示模组，所述显示模组包括上述实施例中的所述背光模组1，以及显示面板2和盖板3。所述显示面板2位于所述背光模组1的出光侧。所述盖板3位于所述显示面板2远离所述背光模组1的一侧且与所述显示面板2固定连接。其中，所述盖板3与所述侧板102远离所述底板101的一侧的端面固定连接。
在本申请实施例中，所述显示面板2可以为液晶显示面板，所述背光模组1用于为所述液晶显示面板提供背光。所述液晶显示面板可以包括相对设置的彩膜基板和阵列基板，以及设置于所述彩膜基板和所述阵列基板之间的液晶层，由于此为相关技术，故在此不再进行详述。其中，在本申请实施例中，所述阵列基板相较于所述彩膜基板靠近所述光学膜片组12。
所述盖板3可以为玻璃盖板3，所述盖板3与所述侧板102之间可以采用第一粘接层4连接，所述第一粘接层4可以为OCA光学胶或OCR胶。
需要说明的是，即使取消中框设置，由于目前的OCA光学胶具有足够的粘接强度，能够保证所述盖板3和所述背板10之间的连接稳定性。此外，所述显示面板2和所述盖板3之间通过第二粘接层5进行连接，所述第二粘接层5的材料可以与所述第一粘接层4的材料相同，同样为OCA光学胶，能够保证所述显示面板2和所述盖板3之间的连接稳定性。
具体的，所述显示模组可以为车载显示模组，所述车载显示模组包括汽车显示屏，车载中控、车载仪表显示等。
有益效果为：本申请提供的背光模组及显示模组，通过在背板的侧板的内壁设有至少一凹槽，以及膜片本体的侧壁向靠近所述背板的一侧延伸形成至少一第一凸耳，第一凸耳延伸至对应的所述凹槽内，利用第一凸耳与凹槽搭配以支撑显示面板，取代了相关技术中同样用于支撑显示面板的中框，可取消中框能够减少模组变形，有利于减少组装工序，降低组装难度和成本；此外，凹槽能够起到限位作用，以防止光学膜片组在垂直方向出现较大位移而出现跳脱。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种背光模组，包括：
    背板，包括相连接的底板和侧板，所述侧板向所述背光模组的出光方向延伸并与所述底板形成有一容纳空间，所述侧板的内壁设有至少一凹槽；
    导光板，设于所述底板上；以及
    光学膜片组，包括膜片本体和至少一第一凸耳，所述膜片本体位于所述容纳空间内，所述第一凸耳沿所述膜片本体的侧壁向靠近所述背板的一侧延伸且与所述凹槽一一对应，所述膜片本体设于所述导光板上；
    其中，所述第一凸耳延伸至对应的所述凹槽内。
  2. 根据权利要求1所述的背光模组，其中，所述第一凸耳的外壁与对应的所述凹槽内壁之间存在第一间隙。
  3. 根据权利要求1所述的背光模组，其中，所述光学膜片组远离所述底板的一侧设置有遮光层，所述遮光层在所述底板上的正投影至少覆盖所述膜片本体的边缘在所述底板上的正投影。
  4. 根据权利要求3所述的背光模组，其中，所述遮光层覆盖所述第一凸耳远离所述底板的一侧。
  5. 根据权利要求1所述的背光模组，其中，所述导光板与所述侧板之间存在第二间隙，所述第二间隙位于所述第一凸耳靠近所述底板的一侧。
  6. 根据权利要求5所述的背光模组，其中，所述导光板远离所述底板一侧的表面与所述底板之间的距离，大于所述凹槽靠近所述底板一侧的表面与所述底板之间的距离。
  7. 根据权利要求5所述的背光模组，其中，所述背光模组还包括至少一固定块，所述固定块位于所述第二间隙内且与所述导光板和所述侧板相抵靠。
  8. 根据权利要求7所述的背光模组，其中，所述固定块的硬度小于所述侧板及所述导光板的硬度。
  9. 根据权利要求1所述的背光模组，其中，所述导光板包括相连接的导光本体和至少一第二凸耳，所述膜片本体位于所述导光本体上，所述第一凸耳位于所述第二凸耳上；其中，所述第二凸耳延伸至对应的所述凹槽内。
  10. 根据权利要求9所述的背光模组，其中，所述凹槽靠近所述底板一侧的表面与所述底板靠近所述第二凸耳一侧的表面平齐。
  11. 根据权利要求1所述的背光模组，其中，所述第一凸耳的外壁与对应的所述凹槽内壁之间设置有缓冲层。
  12. 根据权利要求1所述的背光模组，其中，所述凹槽为所述侧板的所述内壁向远离所述光学膜片组的一侧凹陷形成的；或者，所述凹槽为所述侧板的所述内壁和外壁同时向远离所述光学膜片的一侧凹陷形成的。
  13. 一种显示模组，包括背光模组；
    显示面板，位于所述背光模组的出光侧；以及
    盖板，位于所述显示面板远离所述背光模组的一侧且与所述显示面板固定连接；
    其中，所述盖板与所述侧板远离所述底板的一侧的端面固定连接；
    所述背光模组，包括：
    背板，包括相连接的底板和侧板，所述侧板向所述背光模组的出光方向延伸并与所述底板形成有一容纳空间，所述侧板的内壁设有至少一凹槽；
    导光板，设于所述底板上；以及
    光学膜片组，包括膜片本体和至少一第一凸耳，所述膜片本体位于所述容纳空间内，所述第一凸耳沿所述膜片本体的侧壁向靠近所述背板的一侧延伸且与所述凹槽一一对应，所述膜片本体设于所述导光板上；
    其中，所述第一凸耳延伸至对应的所述凹槽内。
  14. 根据权利要求13所述的显示模组，其中，所述第一凸耳的外壁与对应的所述凹槽内壁之间存在第一间隙。
  15. 根据权利要求13所述的显示模组，其中，所述光学膜片组远离所述底板的一侧设置有遮光层，所述遮光层在所述底板上的正投影至少覆盖所述膜片本体的边缘在所述底板上的正投影。
  16. 根据权利要求15所述的显示模组，其中，所述遮光层覆盖所述第一凸耳远离所述底板的一侧。
  17. 根据权利要求13所述的显示模组，其中，所述导光板与所述侧板之间存在第二间隙，所述第二间隙位于所述第一凸耳靠近所述底板的一侧。
  18. 根据权利要求17所述的显示模组，其中，所述导光板远离所述底板一侧的表面与所述底板之间的距离，大于所述凹槽靠近所述底板一侧的表面与所述底板之间的距离。
  19. 根据权利要求17所述的显示模组，其中，所述背光模组还包括至少一固定块，所述固定块位于所述第二间隙内且与所述导光板和所述侧板相抵靠。
  20. 根据权利要求13所述的显示模组，其中，所述导光板包括相连接的导光本体和至少一第二凸耳，所述膜片本体位于所述导光本体上，所述第一凸耳位于所述第二凸耳上；其中，所述第二凸耳延伸至对应的所述凹槽内。
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