WO2018086356A1 - 背光模组和显示装置 - Google Patents

背光模组和显示装置 Download PDF

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Publication number
WO2018086356A1
WO2018086356A1 PCT/CN2017/090313 CN2017090313W WO2018086356A1 WO 2018086356 A1 WO2018086356 A1 WO 2018086356A1 CN 2017090313 W CN2017090313 W CN 2017090313W WO 2018086356 A1 WO2018086356 A1 WO 2018086356A1
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WO
WIPO (PCT)
Prior art keywords
optical film
strip
backlight module
frame
fixing
Prior art date
Application number
PCT/CN2017/090313
Other languages
English (en)
French (fr)
Inventor
许海峰
辛武根
马睿
刘荣铖
黄建明
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to JP2018506577A priority Critical patent/JP2019536191A/ja
Priority to US15/748,122 priority patent/US20190019445A1/en
Priority to EP17832459.6A priority patent/EP3346325A4/en
Priority to KR1020187004091A priority patent/KR20180070546A/ko
Publication of WO2018086356A1 publication Critical patent/WO2018086356A1/zh

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    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4236—Fixing or mounting methods of the aligned elements
    • 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
    • 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
    • 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

Definitions

  • the present disclosure relates to the field of optical technologies, and in particular, to a backlight module and a display device.
  • the backlight module (Back Light Assembly) is fixed on the back of the liquid crystal display (LCD).
  • the backlight module includes a light guide plate and an optical film on the light-emitting surface of the light guide plate, wherein the optical film is reliably positioned. Sex will directly affect the optical quality of the backlight module.
  • the optical film is usually positioned on the back plate by using a metal positioning post, the optical film has a lug, and the lug has an opening.
  • the metal positioning post is fixed at one end.
  • the other end passes through the opening in the lug in turn and is fixed by the expansion portion.
  • the optical film is positioned by using the prior art.
  • the metal positioning post needs to be fixed on the back plate. This has certain difficulty, and it is necessary to set a back plate.
  • the elastic body is used to fix the metal positioning post, which results in a complicated structure of the backlight module, and is difficult to install, and the optical film is easily detached from the side away from the back plate due to the deformation of the expansion portion itself, thereby reducing the backlight module.
  • Optical quality is used to fix the metal positioning post, which results in a complicated structure of the backlight module, and is difficult to install, and the optical film is easily detached from the side away from the back plate due to the deformation of the expansion portion itself, thereby reducing the backlight module.
  • an embodiment of the present disclosure provides a backlight module and a display device.
  • the technical solution is as follows:
  • the present disclosure provides a backlight module, where the backlight module includes:
  • the optical film is on a light exiting side of the light guide plate, and the frame is on a side of the optical film;
  • the fixing structure includes a first fixing substructure on the optical film and a second fixing substructure on the frame, the first fixing substructure being engaged with the second fixing substructure.
  • the frame comprises a strip frame and a strip extending structure on a side of the strip frame, and an edge of the optical film is located on one side of the strip frame and the strip extending structure In a bent area surrounded by one side;
  • the first fixing substructure includes lugs at at least one end of the optical film, each of the lugs having a groove on a side away from the light guide plate, and the second fixing substructure includes A protrusion of one side of the strip-shaped extension structure, the protrusion being snapped into the groove.
  • the backlight module further includes:
  • the backboard includes: a bottom plate and a strip structure at least one end of the bottom plate, the light guide plate is located between the optical film and the bottom plate, and the strip structure has a card slot The edge of the lug is snapped into the card slot.
  • the optical film is a rectangular film, and the lug is located on a long side of the optical film.
  • the lug is an axisymmetric structure, and the axis of symmetry of the lug coincides with the axis of symmetry of the optical film.
  • each of at least one side of the optical film has a plurality of the lugs symmetrically arranged with respect to an axis of symmetry;
  • the frame body includes the strip frame and a plurality of strip-shaped extending structures symmetrically arranged on a side of the strip frame with respect to an axis of symmetry, an arrangement direction of the plurality of lugs and the plurality of strips
  • the extension structure is arranged in the same direction.
  • the backlight module further includes:
  • a reflective sheet on a bottom side of the light guide plate and located between the light guide plate and the bottom plate.
  • the groove is a circular through hole or a circular blind hole
  • the protrusion is a cylindrical protrusion
  • the present disclosure provides a display device, comprising: the backlight module of any of the first aspects.
  • the frame comprises a strip frame and a strip extending structure on a side of the strip frame, and an edge of the optical film is located on one side of the strip frame and the strip extending structure In a bent area surrounded by one side;
  • the display device further includes:
  • the edge of the display panel being located in a bent region surrounded by one side of the strip frame and the other side of the strip-shaped extension structure.
  • the display device further includes:
  • the front frame being located outside the frame and enclosing the edge of the display panel away from the side of the optical film.
  • FIG. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure
  • 2-1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure
  • FIG. 2-2 is a schematic structural diagram of another backlight module according to an embodiment of the present disclosure.
  • 3-1 is a schematic structural diagram of an optical film provided by an embodiment of the present disclosure.
  • 3-2 is a schematic structural diagram of another optical film provided by an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • the backlight module 10 includes:
  • the housing 101 the optical film 102, the light guide plate 103, and the fixing structure 104.
  • the frame 101 can be a plastic frame.
  • the optical film 102 is disposed on a light exiting side of the light guide plate 103, and the frame body 101 is disposed on a side surface of the optical film 102.
  • the fixing structure 104 may include a first fixing substructure 1041 disposed on the optical film 102 and a second fixing substructure 1042 disposed on the frame 101, and the first fixing substructure 1041 and the second fixing substructure may be 1042 snaps.
  • the backlight module provided by the embodiment of the present disclosure provides a first fixed sub-structure on the optical film by providing a first fixed sub-structure on the optical film, and the first fixed sub-structure and the second fixed sub-structure.
  • the structure is snapped to fix the optical film, which simplifies the structure of the backlight module, and makes the optical film not easy to be detached from the side away from the back plate, thereby ensuring the optical quality of the backlight module.
  • the frame 101 may include a strip frame 1011 and a strip frame 1011 .
  • the side strip extending structure 1012 has an edge of the optical film 102 located in a bent region surrounded by one side of the strip frame 1011 and one side of the strip extending structure 1012.
  • strip extending structure 1012 is located at the middle of the side of the strip frame 1011, that is, the position of the non-end ends.
  • the fixing structure 104 of the backlight module 10 may have two optional structures, including:
  • the first fixed substructure 1041 may include lugs 1021 disposed at at least one end of the optical film 102, and the side of each of the lugs 1021 away from the light guide plate 103 A groove 1021a is provided, the lug 1021 and the groove 1021a disposed on the lug 1021 constitute a first fixing substructure 1041; the second fixing substructure 1042 may include a protrusion 1012a disposed on one side of the strip extending structure 1012 The protrusion 1012a can be snapped into the recess 1021a. By attaching the protrusions disposed on the frame to the grooves of the lugs of the optical film, the optical film can be effectively prevented from being detached from the side of the strip-shaped extension structure, thereby ensuring the optical quality of the backlight module.
  • the optical film may include a brightness enhancement sheet and a diffusion sheet having a thickness of 0.8 mm.
  • the lug 1021 may have a rectangular structure, and the side length of either side of the lug 1021 is greater than or equal to 3 mm.
  • the groove 1021a may be a circular through hole or a circular blind hole, and the diameter of the groove may be 2.2 mm to 2.5 mm; the protrusion 1012a may be a cylindrical protrusion, and the protrusion may have a diameter of 2 The height of the protrusions may be 1.5 mm. It should be noted that the embodiment of the present disclosure does not limit the diameter of the groove and the diameter and thickness of the protrusion.
  • the above size is an optional size as long as the groove and the convex are provided. The dimensions can be adapted to each other to achieve the snap-in function.
  • the first fixed substructure 1041 may include a lug 1021 disposed at at least one end of the optical film 102
  • the second fixed substructure 1042 may include a strip frame disposed
  • the card slot 1011a on the 1011, the edge of the lug 1021 can be snapped into the card slot 1011a.
  • the lugs may be disposed on the optical film according to actual needs.
  • the size of the optical film is small, for example, the size of the optical film is less than or equal to 27 inches, as shown in FIG. 3-1, Only one lug 1021 is disposed on one long side of the diaphragm 102.
  • a groove 1021a is provided on the lug 1021.
  • the lug 1021 is an axisymmetric structure, and the axis of symmetry of the lug 1021 coincides with the axis of symmetry of the optical film 102.
  • the size of the optical film is large, for example, the size of the optical film is larger than 27 inches, as shown in FIG.
  • the frame body may include a strip frame and a plurality of strip-shaped extending structures symmetrically arranged on a side of the strip frame with respect to an axis of symmetry, an arrangement direction of the plurality of lugs and a plurality of strip-shaped extending structures The arrangement direction is the same, that is, in the first alternative fixing structure, the grooves on each of the plurality of lugs correspond to the protrusions on one of the strip-shaped extensions.
  • the material of the above frame may be polycarbonate.
  • polycarbonate has high mechanical strength and good creep resistance, and polycarbonate has very high impact strength even at low temperatures. Due to the high dimensional stability of the polycarbonate, when the molten polycarbonate material is injection molded into a frame provided with a projection, the mechanical strength of the projection is high, and the optical film is not easily worn, and the fixing structure is improved. Stability.
  • the backlight module 10 may further include a back plate 104 .
  • the backplane 104 includes a bottom plate 1041 and a strip structure 1042 at at least one end of the bottom plate 1041.
  • the light guide plate 103 is located between the optical film 102 and the bottom plate 1041.
  • the strip structure 1042 is provided with a card slot, and the lug 1021 The edge can be snapped into the card slot.
  • the card slot is arranged on the strip structure, so that the edge of the lug of the optical film can be engaged in the card slot, thereby achieving the function of positioning the optical film and facilitating subsequent assembly of the backlight module.
  • the back plate may be an galvanized plate, an aluminum plate, or a stainless steel plate.
  • the material of the back plate is not limited in the embodiment of the present disclosure.
  • the optical film 102 is a rectangular diaphragm, and the lug 1021 may be located on the long side of the optical film 102. In practical applications, it has been found that the optical film is easily detached from the side where the long side is located, so that a lug can be provided on at least one long side of the optical film to fix the optical film.
  • the structure of the opposite side of the backlight module can refer to the structure of the backlight module 10 in FIG.
  • the backlight module 10 further includes a reflective sheet 105 disposed on the bottom side of the light guide plate 103 and located between the light guide plate 103 and the bottom plate 1041 .
  • the optical film also has a diffusion sheet for atomizing light.
  • the diffusion sheet provides uniform and soft light to the display device, and finally enhances the front luminance of the light through the brightness enhancement sheet in the optical film.
  • the backlight module provided by the embodiment of the present disclosure provides a first fixed sub-structure on the optical film by providing a first fixed sub-structure on the optical film, and the first fixed sub-structure and the second fixed sub-structure.
  • the structure is snapped to fix the optical film, which simplifies the structure of the backlight module, and makes the optical film not easy to be detached from the side away from the back plate, thereby ensuring the optical quality of the backlight module.
  • the embodiment of the present disclosure further provides a display device.
  • the display device includes a backlight module, and the backlight module can be as shown in FIG. 1 or FIG. 2-1 or FIG. 2-2 or FIG.
  • the backlight module 10 is provided.
  • the frame 101 in the backlight module 10 includes a strip frame 1011 and a strip extending structure 1012 on the side of the strip frame 1011.
  • the edge of the optical film 102 is located in the strip frame 1011.
  • the display device 20 further includes a display panel 20 having an edge on a side of the strip frame 1011 and a strip-shaped extension structure. The other side of the 1012 is surrounded by a bent area.
  • the display device may further include a front frame 30 located outside the frame 101 and enclosing the edge of the display panel 20 away from the side of the optical film 102 .
  • the display device may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display device provided by the embodiment of the present disclosure provides a first fixing substructure on the frame by providing a first fixing substructure on the optical film, and the first fixing substructure and the second fixing substructure.
  • the optical film is fixed by clamping to simplify the structure of the backlight module, and the optical film is not easily detached from the side away from the back plate, thereby ensuring the optical quality of the backlight module.

Abstract

一种背光模组（10）和显示装置，属于光学技术领域，背光模组（10）包括：框体（101）、光学膜片（102）、导光板（103）和固定结构（104）；光学膜片（102）设置在导光板（103）的出光侧，框体（101）设置在光学膜片（102）的侧面；固定结构（104）包括在光学膜片（102）上的第一固定子结构（1041）和在框体（101）上的第二固定子结构（1042），第一固定子结构（1041）与第二固定子结构（1042）卡合。

Description

背光模组和显示装置
相关申请的交叉引用
本申请要求于2016年11月10日递交中国专利局的、申请号为201621214871.7的中国专利申请的权益，该申请的全部公开内容以引用方式并入本文。
技术领域
本公开涉及光学技术领域，特别涉及一种背光模组和显示装置。
背景技术
背光模组(Back Light Assembly)固定于液晶显示器(Liquid Crystal Display；简称：LCD)背后，背光模组包括导光板和在导光板的出光面上的光学膜片，其中，光学膜片定位的可靠性会直接影响到背光模组的光学品质。
在现有技术中，通常利用金属定位柱将光学膜片进行定位在背板上，在光学膜片上有凸耳，凸耳上有开孔，在组装背光模组时，金属定位柱一端固定在背板上，另一端依次穿过凸耳上的开孔并通过膨胀部进行固定。
但是，在实际应用中发现，采用现有技术对光学膜片进行定位，在组装背光模组时，需要将金属定位柱固定在背板上，这存在一定的难度，需要在背板上设置一个弹性体来固定该金属定位柱，这导致背光模组的结构复杂，安装难度大，并且由于膨胀部自身的形变，光学膜片容易从远离背板的一侧脱开，降低了背光模组的光学品质。
发明内容
为了至少部分或全部解决上述问题，本公开实施例提供了一种背光模组和显示装置。所述技术方案如下：
第一方面，本公开提供了一种背光模组，所述背光模组包括：
框体、光学膜片、导光板和固定结构；
所述光学膜片在所述导光板的出光侧，所述框体在所述光学膜片的侧面；
所述固定结构包括在所述光学膜片上的第一固定子结构和在所述框体上的第二固定子结构，所述第一固定子结构与所述第二固定子结构卡合。
可选地，所述框体包括条形框和位于所述条形框侧面的条形延伸结构，所述光学膜片的边缘位于所述条形框的一侧与所述条形延伸结构的一侧所围成的弯折区域内；
所述第一固定子结构包括在所述光学膜片的至少一端的凸耳，每个所述凸耳远离所述导光板的一侧上有凹槽，所述第二固定子结构包括在所述条形延伸结构的一侧的凸起，所述凸起卡接在所述凹槽中。
可选地，所述背光模组还包括：
背板，所述背板包括：底板和位于所述底板至少一端的条形结构，所述导光板位于所述光学膜片与所述底板之间，所述条形结构上有卡槽，所述凸耳的边缘卡接在所述卡槽中。
可选地，所述光学膜片为矩形膜片，所述凸耳位于所述光学膜片的长边上。
可选地，所述凸耳为轴对称结构，且所述凸耳的对称轴与所述光学膜片的对称轴重合。
可选地，所述光学膜片的至少一边中的每一边有相对于对称轴对称排布的多个所述凸耳；
所述框体包括所述条形框和位于所述条形框侧面的相对于对称轴对称排布的多个条形延伸结构，所述多个凸耳的排布方向和所述多个条形延伸结构的排布方向相同。
可选地，所述背光模组还包括：
反射片，所述反射片在所述导光板的底侧，且位于所述导光板与所述底板之间。
可选地，所述凹槽为圆形通孔或圆形盲孔，所述凸起为圆柱形凸起。
第二方面，本公开提供了一种显示装置，所述显示装置包括：第一方面任一所述的背光模组。
可选地，所述框体包括条形框和位于所述条形框侧面的条形延伸结构，所述光学膜片的边缘位于所述条形框的一侧与所述条形延伸结构的一侧所围成的弯折区域内；
所述显示装置还包括：
显示面板，所述显示面板的边缘位于所述条形框的一侧与所述条形延伸结构的另一侧所围成的弯折区域内。
可选地，所述显示装置还包括：
前框，所述前框位于所述框体外侧，且包裹所述显示面板远离所述光学膜片的一侧的边缘。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，并不构成对本公开的限制。
图1是本公开的实施例提供的一种背光模组的结构示意图；
图2-1是本公开的实施例提供的一种背光模组的结构示意图；
图2-2是本公开的实施例提供的另一种背光模组的结构示意图；
图3-1是本公开的实施例提供的一种光学膜片的结构示意图；
图3-2是本公开的实施例提供的另一种光学膜片的结构示意图；
图4是本公开的实施例提供的一种背光模组的结构示意图；以及
图5是本公开的实施例提供的一种显示装置的结构示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
本公开实施例提供了一种背光模组10，如图1所示，该背光模组10包括：
框体101、光学膜片102、导光板103和固定结构104。所述框体101可以为胶框。
所述光学膜片102设置在导光板103的出光侧，所述框体101设置在光学膜片102的侧面。
所述固定结构104可以包括设置在光学膜片102上的第一固定子结构1041和设置在框体101上的第二固定子结构1042，该第一固定子结构1041可以与第二固定子结构1042卡合。
综上所述，本公开实施例提供的背光模组，通过在光学膜片上设置第一固定子结构，在框体上设置第二固定子结构，将第一固定子结构与第二固定子结构卡合来固定光学膜片，简化了背光模组的结构的同时，使得光学膜片不易从远离背板的一侧脱开，从而保证了背光模组的光学品质。
进一步的，如图1所示，框体101可以包括条形框1011和位于条形框1011 侧面的条形延伸结构1012，光学膜片102的边缘位于条形框1011的一侧与条形延伸结构1012的一侧所围成的弯折区域内。
需要说明的是，条形延伸结构1012位于条形框1011的侧面的中部，也即是非两端的位置。
可选地，本公开实施例提供的背光模组10的固定结构104可以有两种可选结构，包括：
第一种可选结构，如图2-1所示，第一固定子结构1041可以包括设置在光学膜片102的至少一端的凸耳1021，每个凸耳1021远离导光板103的一侧上设置有凹槽1021a，凸耳1021和设置在凸耳1021上的凹槽1021a组成第一固定子结构1041；第二固定子结构1042可以包括设置在条形延伸结构1012的一侧的凸起1012a，该凸起1012a能够卡接在凹槽1021a中。通过将设置在框体上的凸起卡接在光学膜片的凸耳的凹槽中，可以有效防止光学膜片从条形延伸结构一侧脱开，保证了背光模组的光学品质。
可选地，光学膜片可以包括增光片和扩散片，该光学膜片的厚度为0.8毫米。
可选地，所述凸耳1021可以为矩形结构，该凸耳1021的任一边的边长大于或等于3毫米。
可选地，所述凹槽1021a可以为圆形通孔或圆形盲孔，凹槽的直径可以为2.2毫米至2.5毫米；凸起1012a可以为圆柱形凸起，凸起的直径可以为2毫米，凸起的高度可以为1.5毫米，需要说明的是，本公开实施例对凹槽的直径和凸起的直径及厚度的尺寸不做限定，上述尺寸为可选尺寸，只要凹槽和凸起的尺寸能够相互对应实现卡接功能即可。
第二种可选结构，如图2-2所示，第一固定子结构1041可以包括设置在光学膜片102的至少一端的凸耳1021，第二固定子结构1042可以包括设置在条形框1011上的卡槽1011a，凸耳1021的边缘可以卡接在卡槽1011a中。通过设置光学膜片的凸耳的合适的边长，使凸耳可以卡接在条形框的卡槽中，可以减小光学膜片从远离导光板的一侧脱开的风险，一定程度上保证了背光模组的光学品质。
在实际应用中，可以根据实际需要在光学膜片上设置凸耳，当光学膜片的尺寸较小时，例如光学膜片的尺寸小于或等于27寸，如图3-1所示，可以在光学膜片102的一侧长边上仅设置一个凸耳1021，在第一种可选固定结构中， 在凸耳1021上设置有凹槽1021a。需要说明的是，该凸耳1021为轴对称结构，且该凸耳1021的对称轴与光学膜片102的对称轴重合。当光学膜片的尺寸较大时，例如光学膜片的尺寸大于27寸，如图3-2所示，还可以在光学膜片102的一侧长边上设置相对于对称轴对称排布的多个凸耳1021。根据实际情况，还可以在光学膜片的每一边上都设置凸耳。需要说明的是，框体可以包括条形框和位于条形框侧面的相对于对称轴对称排布的多个条形延伸结构，该多个凸耳的排布方向和多个条形延伸结构的排布方向相同，也即是，在第一种可选的固定结构中，多个凸耳中每个凸耳上的凹槽对应于一个条形延伸结构上的凸起。
可选地，上述框体的材料可以为聚碳酸酯。需要说明的是，聚碳酸酯具有机械强度高、耐蠕变性能好的特性，即使在低温下,聚碳酸酯仍具有非常高的抗冲击强度。由于聚碳酸酯的尺寸稳定性较高，将熔融状态的聚碳酸酯材料注塑成形为设置有凸起的框体时，凸起的机械强度高，不易受到光学膜片的磨损，提高了固定结构的稳定性。
进一步地，如图4所示，该背光模组10还可以包括背板104。该背板104包括：底板1041和位于该底板1041至少一端的条形结构1042，导光板103位于光学膜片102与该底板1041之间，该条形结构1042上设置有卡槽，凸耳1021的边缘能够卡接在该卡槽中。在条形结构上设置卡槽，使得光学膜片的凸耳边缘能卡接在卡槽中，达到了对光学膜片定位的作用，便于背光模组的后续组装。
可选地，背板可以为镀铝锌板，也可以为铝板，还可以为不锈钢板，本公开实施例对背板的材料不做限定。
需要说明的是，光学膜片102为矩形膜片，凸耳1021可以位于光学膜片102的长边上。在实际应用中发现，光学膜片易从长边所在侧脱开，所以可以在光学膜片的至少一侧长边上设置凸耳以固定住光学膜片。当背光模组为对称结构时，背光模组的对侧的结构可以参考图4中背光模组10一侧的结构。
再进一步地，如图4所示，背光模组10还可以包括反射片105，该反射片105设置在导光板103的底侧，且位于导光板103与底板1041之间。
具体地，在背光模组进行工作时，通过导光板传输灯条发出的光线，导光板下方的反射片可以将从导光板底面逃逸出来的光重新反射至导光板中，提高光的利用率，光学膜片中还具有将光进行雾化的扩散片，扩散片为显示装置提供均匀柔和的光线，最后通过光学膜片中的增光片提高光线的正面辉度。
综上所述，本公开实施例提供的背光模组，通过在光学膜片上设置第一固定子结构，在框体上设置第二固定子结构，将第一固定子结构与第二固定子结构卡合来固定光学膜片，简化了背光模组的结构的同时，使得光学膜片不易从远离背板的一侧脱开，从而保证了背光模组的光学品质。
本公开实施例还提供了一种显示装置，如图5所示，该显示装置包括背光模组，该背光模组可以为图1或图2-1或图2-2或图4所示的背光模组10。
需要说明的是，如图5所示，背光模组10中的框体101包括条形框1011和位于条形框1011侧面的条形延伸结构1012，光学膜片102的边缘位于条形框1011的一侧与条形延伸结构1012的一侧所围成的弯折区域内；该显示装置还可以包括显示面板20，该显示面板20的边缘位于条形框1011的一侧与条形延伸结构1012的另一侧所围成的弯折区域内。
进一步地，如图5所示，所述显示装置还可以包括前框30，该前框30位于框体101外侧，且包裹显示面板20远离光学膜片102的一侧的边缘。
在具体实施时，本公开实施例提供的显示装置可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
综上所述，本公开实施例提供的显示装置，通过在光学膜片上设置第一固定子结构，在框体上设置第二固定子结构，将第一固定子结构与第二固定子结构卡合来固定光学膜片，简化了背光模组的结构的同时，使得光学膜片不易从远离背板的一侧脱开，从而保证了背光模组的光学品质。
以上所述仅为本公开的较佳实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (10)

  1. 一种背光模组，其中，包括：
    框体、光学膜片、导光板和固定结构；
    所述光学膜片位于所述导光板的出光侧，所述框体位于所述光学膜片的侧面；
    所述固定结构包括位于所述光学膜片上的第一固定子结构和位于所述框体上的第二固定子结构，所述第一固定子结构与所述第二固定子结构卡合。
  2. 根据权利要求1所述的背光模组，其中，所述框体包括条形框和位于所述条形框侧面的条形延伸结构，所述光学膜片的边缘位于所述条形框的一侧与所述条形延伸结构的一侧所围成的弯折区域内；
    所述第一固定子结构包括在所述光学膜片的至少一端的凸耳，每个所述凸耳远离所述导光板的一侧上有凹槽，所述第二固定子结构包括在所述条形延伸结构的一侧的凸起，所述凸起卡接在所述凹槽中。
  3. 根据权利要求2所述的背光模组，其中，所述背光模组还包括：
    背板，所述背板包括：底板和位于所述底板至少一端的条形结构，所述导光板位于所述光学膜片与所述底板之间，所述条形结构上有卡槽，所述凸耳的边缘卡接在所述卡槽中。
  4. 根据权利要求2所述的背光模组，其中，所述光学膜片为矩形膜片，所述凸耳位于所述光学膜片的长边上。
  5. 根据权利要求4所述的背光模组，其中，
    所述凸耳为轴对称结构，且所述凸耳的对称轴与所述光学膜片的对称轴重合。
  6. 根据权利要求4所述的背光模组，其中，
    所述光学膜片的至少一边中的每一边有相对于对称轴对称排布的多个所述凸耳；
    所述框体包括所述条形框和位于所述条形框侧面的相对于对称轴对称排 布的多个条形延伸结构，所述多个凸耳的排布方向和所述多个条形延伸结构的排布方向相同。
  7. 根据权利要求3所述的背光模组，其中，所述背光模组还包括：
    反射片，所述反射片在所述导光板的底侧，且位于所述导光板与所述底板之间。
  8. 根据权利要求2所述的背光模组，其中，
    所述凹槽为圆形通孔或圆形盲孔，所述凸起为圆柱形凸起。
  9. 一种显示装置，其中，所述显示装置包括：权利要求1至8任一项所述的背光模组，
    显示面板，所述显示面板的边缘位于所述条形框的一侧与所述条形延伸结构的另一侧所围成的弯折区域内。
  10. 根据权利要求9所述的显示装置，其中，所述显示装置还包括：
    前框，所述前框位于所述框体外侧，且包裹所述显示面板远离所述光学膜片的一侧的边缘。
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US20190019445A1 (en) 2019-01-17
EP3346325A1 (en) 2018-07-11

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