WO2019148967A1 - 一种背光模组及电子设备 - Google Patents

一种背光模组及电子设备 Download PDF

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Publication number
WO2019148967A1
WO2019148967A1 PCT/CN2018/120028 CN2018120028W WO2019148967A1 WO 2019148967 A1 WO2019148967 A1 WO 2019148967A1 CN 2018120028 W CN2018120028 W CN 2018120028W WO 2019148967 A1 WO2019148967 A1 WO 2019148967A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
disposed
backlight module
light
Prior art date
Application number
PCT/CN2018/120028
Other languages
English (en)
French (fr)
Inventor
欧阳志斌
Original Assignee
Oppo广东移动通信有限公司
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
Priority claimed from CN201820181747.5U external-priority patent/CN208107763U/zh
Priority claimed from CN201810106256.9A external-priority patent/CN108087794B/zh
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP18904336.7A priority Critical patent/EP3719388B1/en
Publication of WO2019148967A1 publication Critical patent/WO2019148967A1/zh
Priority to US16/889,753 priority patent/US20200292749A1/en

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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
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • 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
    • G02B6/0028—Light guide, e.g. taper
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present application relates to the field of electronic device technologies, and in particular, to a backlight module and an electronic device.
  • the backlight module of the electronic device includes an optical component and a backlight.
  • the distance between the light guide plate of the optical component and the backlight is too large, and the light guide plate cannot completely receive the light emitted by the backlight, thereby reducing the light guide plate. The problem with the backlight effect.
  • the backlight module includes a back frame, and includes a sidewall and a bottom wall.
  • the sidewall is bent and connected to the bottom wall to form an accommodating space.
  • An optical component is disposed in the accommodating space and disposed on the bottom wall, the optical component includes a light guide plate, the light guide plate is provided with a first positioning portion, and a backlight is disposed on the side of the light guide plate One side of the wall; a positioning member connected to the back frame and at least partially disposed in the accommodating space, the positioning member is provided with a second positioning portion, the first positioning portion and the second positioning portion
  • the setting is matched such that the distance between the light guide plate and the backlight is less than or equal to a threshold.
  • FIG. 1 is a schematic structural view of a first embodiment of a backlight module provided by the present application
  • Figure 2 is a schematic cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is a cross-sectional view taken along line B-B of Figure 1;
  • FIG. 4 is another schematic view of the assembly of the light shielding tape and the back frame of FIG. 1;
  • FIG. 5 is a schematic cross-sectional view showing a second embodiment of a backlight module provided by the present application.
  • FIG. 7 is a schematic structural diagram of an embodiment of an electronic device provided by the present application.
  • references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application.
  • the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
  • a backlight module comprising: a back frame comprising a side wall and a bottom wall, the side wall being bent and connected to the bottom wall and forming an accommodation space; the optical component is located at the The optical component includes a light guide plate, the light guide plate is provided with a first positioning portion, and a backlight is disposed on a side of the light guide plate adjacent to the sidewall; And the at least partially disposed in the accommodating space, the locating member is provided with a second positioning portion, and the first positioning portion is disposed in cooperation with the second positioning portion, so as to be The distance between the light guide plate and the backlight is less than or equal to a threshold; wherein the first positioning portion is a groove, and the second positioning portion is a protrusion that cooperates with the groove.
  • the positioning member includes a main body portion and an extending portion, the main body portion is connected to the back frame, the extending portion extends from the main body portion to the receiving space, and the second positioning portion is disposed at the On the extension.
  • the number of the side walls is at least two, the at least two side walls are bent and connected, the main body portion is disposed at a joint of the at least two side walls, and the extending portion is from the main body portion Extending between at least one of the at least two side walls and the light guide plate.
  • the positioning member includes a main body portion and an extending portion, the main body portion is connected to the back frame, the extending portion extends from the main body portion to the receiving space, and the second positioning portion is disposed at the On the extension.
  • the number of the side walls is at least two, the at least two side walls are bent and connected, the main body portion is disposed at a joint of the at least two side walls, and the extending portion is from the main body portion Extending between at least one of the at least two side walls and the light guide plate.
  • the back frame further includes a top wall, the top wall being bent and connected to the side wall at an end of the side wall away from the bottom wall, and forming a joint with the side wall and the bottom wall
  • the accommodating space is provided, and the positioning member is flush with the top wall on a side of the top wall away from the accommodating space.
  • the threshold is less than or equal to 0.1 mm.
  • the backlight includes a light source and a flexible circuit board.
  • the light source is disposed on a side of the light guide plate adjacent to the sidewall, and the flexible circuit board is away from the light guide plate. The side is attached to the light source.
  • the light guide plate includes a light incident surface and a light exiting surface, and the light source is disposed on one side of the light incident surface of the light guide plate, and is located at an optimal light emitting position with respect to the light guide plate.
  • the optimal lighting position is a position at which the light guide plate can completely receive the light emitted by the light source.
  • the optimal lighting position includes an optimal height position and an optimal distance position.
  • a first adhesive member is disposed between the light source and the bottom wall, and the light source is adhered to the bottom wall by the first adhesive member, and the light source is opposite to the guide
  • the light panel is located at the optimal height position.
  • a second adhesive member is disposed between the light source and the sidewall, the light source is adhered to the sidewall through the second adhesive member, and the light source is opposite to the guide
  • the light panel is located at the optimal distance position.
  • the accommodating space includes a first space segment and a second space segment that are sequentially connected in a direction facing the side wall, the first space segment is for accommodating the optical component, and the second space
  • the cross-sectional area of the segment in a direction facing the side wall is larger than the cross-sectional area of the first space segment, and the light source is disposed in the second space segment.
  • An electronic device wherein the electronic device includes a display module and a backlight module, and the display module is stacked on the backlight module, the backlight module includes: a back frame, including a side wall and a bottom a wall, the side wall is bent and connected to the bottom wall, and forms an accommodating space; an optical component is disposed in the accommodating space and disposed on the bottom wall, and the optical component comprises a light guide plate.
  • the light guide plate is provided with a first positioning portion; a backlight is disposed on a side of the light guide plate adjacent to the side wall; a positioning member is connected to the back frame and at least partially disposed in the receiving space, the positioning The piece is provided with a second positioning portion, and the first positioning portion is disposed in cooperation with the second positioning portion such that a distance between the light guide plate and the backlight is less than or equal to a threshold.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a backlight module 10 according to the present application.
  • the backlight module 10 of the present embodiment includes a back frame 11 , an optical component 12 , a backlight 13 , and a positioning component 14 .
  • the back frame 11 includes a sidewall 111 and a bottom wall 112.
  • the sidewall 111 is bent and connected to the bottom wall 112 and defines an accommodating space 101.
  • the number of the side walls 111 is at least two, and at least two side walls 111 are bent and connected.
  • the back frame 11 further includes a top wall 113.
  • the top wall 113 is bent and connected to the sidewall 111 at an end of the sidewall 111 away from the bottom wall 112, and forms the above-mentioned accommodation space together with the sidewall 111 and the bottom wall 112.
  • the top wall 113 is configured to carry the display module when the backlight module 10 is assembled with the display module of the electronic device.
  • the back frame 11 is provided with an opening 1111 that communicates with the accommodating space 101 .
  • the back frame 11 is a metal back frame.
  • the optical component 12 is located in the accommodating space 101 and is disposed on the bottom wall 112.
  • the optical component 12 includes a light guide plate 121.
  • the light guide plate 121 includes a light incident surface 1211 and a light exit surface 1212.
  • the light incident surface 1211 is a surface of the light guide plate 121 near the sidewall 111.
  • the light exit surface 1212 is a light guide plate 121 away from the bottom wall 112.
  • the light guide plate 121 is provided with a first positioning portion 1213.
  • the optical component 12 further includes an optical film set 122 and a reflective sheet 123.
  • the optical film set 122 is disposed on the light guide plate 121 on one side of the light emitting surface 1212 of the light guide plate 121, and the reflective sheet 123 is away from the light guide plate 121.
  • One side of the face 1212 is disposed on the bottom wall 112.
  • the optical film group 122 includes a diffusion film 122a, a lower anti-reflection film 122b, and an upper anti-reflection film 122c which are sequentially stacked in a direction away from the light guide plate 121.
  • the backlight 13 is disposed on a side of the light guide plate 121 adjacent to the sidewall 111. Specifically, the backlight 13 is disposed on a side of the light guide plate 121 adjacent to one of the at least two sidewalls 111.
  • the backlight 13 includes a light source 131 and a flexible circuit board 132.
  • the light source 131 is disposed on a side of the light guide plate 121 adjacent to the side wall 111. Specifically, the light source 131 is disposed on one side of the light incident surface 1211 of the light guide plate 121 to emit light through the light incident surface 1211 to the light guide plate 121.
  • the light source 131 includes a PCB circuit board 131a, a package member 131b, and a light emitting unit 131c.
  • the PCB circuit board 131a is disposed on a side of the light guide plate 121 adjacent to the side wall 111, and the package member 131b is adjacent to the light guide plate 121 on the PCB circuit board 131a.
  • the side is connected to the PCB circuit board 131a, and is provided with a package slot 1311.
  • the light emitting unit 131c is mounted on the PCB circuit board 131a and packaged in the package slot 1311, and emits light through the package slot 1311 to the light guide plate 121.
  • the light emitting unit 131c is an LED chip.
  • the light source 131 is located at an optimal light emitting position with respect to the light guide plate 121.
  • the optimal illumination position is a position where the light guide plate 121 can completely receive the light emitted by the light source 131.
  • the optimal illumination position is the optimal height position and the optimal distance position. It can be understood that if the light source 131 is perpendicular to the bottom. If the height of the wall 112 is too high or too low, the light guide plate 121 may not completely receive the light emitted by the light source 131. If the distance between the light source 131 and the light guide plate 121 is too large, the light source 131 may be caused. The emitted light leaks from the light guide plate 121 and cannot be completely received by the light guide plate 121, thereby reducing the light source utilization of the light source 131 and the backlight effect of the light guide plate 121.
  • the light emitting unit 131c of the light source 131 is located at a center line position of the light guide plate 121.
  • the first adhesive member 15 is a double-sided tape.
  • the flexible circuit board 132 is attached to the light source 131 on the side of the light source 131 away from the light guide plate 121 , so that the flexible circuit board 132 does not need to be in the direction toward the side wall 111 .
  • the space is omitted in the direction perpendicular to the sidewall 111, and the width of the backlight module 10 in the direction perpendicular to the sidewall 111 is reduced, thereby implementing the backlight module.
  • the narrow side of 111 is provided.
  • the flexible circuit board 132 is attached to the PCB circuit board 131a on the side of the PCB circuit board 131a away from the light emitting unit 131c, and extends to the back frame 11 away from the accommodating space 101 through the opening 1111 as shown in FIG. side.
  • the flexible circuit board 132 is attached to the PCB circuit board 131a in the same layer as the second adhesive member 15.
  • the positioning member 14 is connected to the back frame 11 and at least partially disposed in the accommodating space 101.
  • the positioning member 14 includes a main body portion 14a and an extending portion 14b.
  • the main body portion 14a is connected to the back frame 11.
  • the extending portion 14b extends from the main body portion 14a toward the accommodating space 101.
  • the main body portion 14a is at least The portion is disposed in the accommodating space 101 and connected to the back frame 11 , and the extending portion 14 b extends from a portion of the main body portion 14 a located in the accommodating space 101 .
  • the positioning member 14 is provided with a second positioning portion 141, which is disposed in cooperation with the first positioning portion 1213 such that the distance between the light guide plate 121 and the backlight 13 is less than or equal to a threshold.
  • the backlight 13 is first loaded into the accommodating space 101 of the back frame 11, and then the optical component 12 is loaded into the accommodating space 101. At this time, the optical component 12 is assembled.
  • An assembly gap needs to be reserved between the light guide plate 121 and the backlight 13 , that is, after the light assembly 12 is inserted into the accommodating space 101 , there is a gap between the light guide plate 121 and the backlight 13 , but in actual assembly.
  • the gap between the light guide plate 121 and the backlight 13 is excessively large, so that the light guide plate 121 cannot completely receive the light emitted by the backlight 13, thereby reducing the light guide plate 121.
  • the second positioning portion 141 of the positioning member 14 is disposed in cooperation with the first positioning portion 1213 of the light guide plate 121, and is assembled by the first positioning portion 1213 and the second positioning portion 141 during assembly.
  • the optical component 12 is loaded into the accommodating space 101 such that the distance between the light guide plate 121 and the backlight 13 is less than or equal to a threshold value, preventing the distance between the light guide plate 121 and the backlight 13 from occurring during the assembly process. big Conditions, and assembly accuracy can be improved, reducing the difficulty of assembly.
  • the second positioning portion 141 is a protrusion that cooperates with the groove of the first positioning portion 1213 , and the protrusion is parallel to the backlight 13 toward the direction of the groove.
  • the above threshold is less than or equal to 0.1 mm.
  • the backlight module 10 of the present embodiment further includes a light-shielding tape 17 which is adhered to the top wall 113 and the optical film group 12 on the side of the top wall 113 away from the accommodating space 101 to be in the optical film group.
  • a light-shielding tape 17 which is adhered to the top wall 113 and the optical film group 12 on the side of the top wall 113 away from the accommodating space 101 to be in the optical film group.
  • the light-shielding tape 17 is adhered to the top wall 113 and the upper anti-reflection film 122c of the optical film group 12 on the side of the top wall 113 away from the accommodating space 101.
  • the light-shielding tape 17 is also adhered to the sidewall 111 on the side of the sidewall 111 away from the accommodating space 101 to increase the bonding area of the light-shielding tape 17 and the back frame 11 , thereby increasing the light-shielding tape 17 .
  • the first positioning portion is disposed on the light guide plate, and the positioning member is disposed on the second positioning portion disposed in cooperation with the first positioning portion, so that the first positioning portion and the second portion are assembled when the optical assembly is assembled.
  • the positioning portion cooperates with the positioning, and the optical component is loaded into the accommodating space, so that the distance between the light guide plate and the backlight is less than or equal to a threshold, thereby preventing an excessive distance between the light guide plate and the backlight during the assembly process.
  • the light guide plate cannot completely receive the light emitted by the backlight, which improves the backlight efficiency of the light guide plate, and can improve assembly precision and reduce assembly difficulty.
  • FIG. 5 is a schematic cross-sectional view of a second embodiment of a backlight module 20 according to the present application.
  • the backlight module 20 of the present embodiment includes a back frame 21 , an optical component 12 , a backlight 13 , and a positioning component 14 .
  • the back frame 21 includes a sidewall 111 and a bottom wall 212.
  • the sidewall 111 is bent and connected to the bottom wall 212 and defines an accommodating space 201.
  • the number of the side walls 111 is at least two, and at least two side walls 111 are bent and connected.
  • the accommodating space 201 includes a first space segment 2011 and a second space segment 2012 that are sequentially connected in a direction facing the side wall 111, and a cross-sectional area of the second space segment 2012 in a direction facing the side wall 111 is larger than the first The cross-sectional area of the space segment 2011.
  • the sidewall 212 includes a first wall segment 2121 and a second wall segment 2122 that are sequentially connected in a direction facing the sidewall 111, and a vertical between the second wall segment 2122 and the top wall 113 as shown in FIG.
  • the distance is greater than a vertical distance between the first wall section 2121 and the top wall 113 to have a cross-sectional area of the second space segment 2012 of the second wall section 2122 in the direction facing the side wall 111 when the accommodating space 201 is formed. It is larger than the cross-sectional area of the first space segment 2011 located in the first wall segment 2121.
  • the back frame 21 is a metal back frame.
  • the optical component 12 is located in the accommodating space 201 and disposed on the bottom wall 212.
  • the first space segment 2011 of the accommodating space 201 is used for accommodating the optical component 12 .
  • the optical component 12 includes a light guide plate 121.
  • the light guide plate 121 includes a light incident surface 1211 and a light exit surface 1212.
  • the light incident surface 1211 is a surface of the light guide plate 121 near the sidewall 111.
  • the light exit surface 1212 is a light guide plate 121 away from the bottom wall 112.
  • the light guide plate 121 is provided with a first positioning portion 1213.
  • the first positioning portion 1213 is a groove.
  • the optical film group 122 includes a diffusion film 122a, a lower anti-reflection film 122b, and an upper anti-reflection film 122c which are sequentially stacked in a direction away from the light guide plate 121.
  • the backlight 13 includes a light source 131 and a flexible circuit board 132.
  • the light source 131 is disposed on a side of the light guide plate 121 adjacent to the side wall 111. Specifically, the light source 131 is disposed on one side of the light incident surface 1211 of the light guide plate 121 to emit light through the light incident surface 1211 to the light guide plate 121.
  • the light source 131 includes a PCB circuit board 131a, a package member 131b, and a light emitting unit 131c.
  • the PCB circuit board 131a is disposed on a side of the light guide plate 121 adjacent to the side wall 111, and the package member 131b is adjacent to the light guide plate 121 on the PCB circuit board 131a.
  • the side is connected to the PCB circuit board 131a, and is provided with a package slot 1311.
  • the light emitting unit 131c is mounted on the PCB circuit board 131a and packaged in the package slot 1311, and emits light through the package slot 1311 to the light guide plate 121.
  • the light source 131 is located at an optimal light emitting position with respect to the light guide plate 121.
  • the optimal illumination position is a position where the light guide plate 121 can completely receive the light emitted by the light source 131.
  • the optimal illumination position is the optimal height position and the optimal distance position. It can be understood that if the light source 131 is perpendicular to the bottom. If the height of the wall 112 is too high or too low, the light guide plate 121 may not completely receive the light emitted by the light source 131. If the distance between the light source 131 and the light guide plate 121 is too large, the light source 131 may be caused. The emitted light leaks from the light guide plate 121 and cannot be completely received by the light guide plate 121, thereby reducing the light source utilization of the light source 131 and the backlight effect of the light guide plate 121.
  • the light emitting unit 131c of the light source 131 is located at a center line position of the light guide plate 121.
  • the light source 131 is disposed in the second space segment 2012, and the cross-sectional area of the second space segment 2012 in the direction perpendicular to the sidewall 111 is larger than the cross-sectional area of the first space segment 2011, the light source 131 is set.
  • the second space segment 2012 when the height of the light source 132 is adjusted, a sufficient adjustment space can be provided to prevent the thickness of the first adhesive member 15 from being reduced by reducing the thickness of the first adhesive member 15 when the space is insufficient.
  • a second adhesive member 16 is disposed between the light source 131 and the sidewall 111.
  • the light source 131 is adhered to the sidewall 111 by the second adhesive member 16, and the light source 131 is optimally positioned relative to the light guide plate 121.
  • the thickness of the second adhesive member 16 can be adjusted so that the light source 131 is opposite to the guide.
  • the light plate 121 is located at an optimal distance to improve the light source utilization of the light source 131 and the backlight effect of the light guide plate 121.
  • the flexible circuit board 132 is attached to the light source 131 on a side of the light source 131 away from the optical component and attached to the light source 131 of the light source 131, so that the flexible circuit board 132 does not need to be in the direction toward the side wall 111.
  • the space is omitted in the direction perpendicular to the sidewall 111, and the width of the backlight module 10 in the direction perpendicular to the sidewall 111 is reduced, thereby implementing the backlight module.
  • the narrow side of 111 In order to provide a soldering space for the soldering of the light source 131, the space is omitted in the direction perpendicular to the sidewall 111, and the width of the backlight module 10 in the direction perpendicular to the sidewall 111 is reduced, thereby implementing the backlight module.
  • the narrow side of 111 is provided.
  • the flexible circuit board 132 is attached to the PCB circuit board 131a on the side of the PCB circuit board 131a away from the light-emitting unit 131c, and extends to the side of the back frame 11 away from the accommodating space 101 through the opening 1111.
  • the positioning member 14 includes a main body portion 14a and an extending portion 14b.
  • the main body portion 14a is connected to the back frame 11.
  • the extending portion 14b extends from the main body portion 14a toward the accommodating space 101.
  • the main body portion 14a is at least The portion is disposed in the accommodating space 101 and connected to the back frame 11 , and the extending portion 14 b extends from a portion of the main body portion 14 a located in the accommodating space 101 .
  • the main body portion 14a is disposed at a bent joint of the at least two side walls 111, and the extending portion 14b extends from the main body portion 14a to at least one of the at least two side walls 111 and the light guide plate 121.
  • the extending portion 14b extends from the main body portion 14a on the side where the backlight 13 is not disposed between the light guide plate 121 and the at least two side walls 111.
  • the positioning member 14 is flush with the top wall 113 on a side of the top wall 113 away from the accommodating space 101, so as to carry the display module of the electronic device together with the top wall 113.
  • the main body portion 14a is The side of the top wall 113 away from the accommodating space 101 is flush with the top wall 113.
  • the positioning member 14 is provided with a second positioning portion 141, which is disposed in cooperation with the first positioning portion 1213 such that the distance between the light guide plate 121 and the backlight 13 is less than or equal to a threshold.
  • the backlight 13 is first loaded into the accommodating space 101 of the back frame 11, and then the optical component 12 is loaded into the accommodating space 101. At this time, the optical component 12 is assembled.
  • An assembly gap needs to be reserved between the light guide plate 121 and the backlight 13 , that is, after the light assembly 12 is inserted into the accommodating space 101 , there is a gap between the light guide plate 121 and the backlight 13 , but in actual assembly.
  • the gap between the light guide plate 121 and the backlight 13 is likely to be too large, so that the light guide plate 121 cannot completely receive the light emitted by the backlight 13, thereby reducing the light guide plate 121.
  • the second positioning portion 141 is a protrusion that cooperates with the groove of the first positioning portion 1213 , and the protrusion is parallel to the backlight 13 toward the direction of the groove.
  • the above threshold is less than or equal to 0.1 mm.
  • the backlight module 20 of the present embodiment further includes a light-shielding tape 17 which is adhered to the top wall 113 and the optical film group 12 on the side of the top wall 113 away from the accommodating space 201 to be in the optical film group.
  • a light-shielding tape 17 which is adhered to the top wall 113 and the optical film group 12 on the side of the top wall 113 away from the accommodating space 201 to be in the optical film group.
  • the light-shielding tape 17 is adhered to the top wall 113 and the upper anti-reflection film 122c of the optical film group 12 on the side of the top wall 113 away from the accommodating space 201.
  • the light-shielding tape 17 is also adhered to the sidewall 111 on the side of the sidewall 111 away from the accommodating space 201 to increase the bonding area of the light-shielding tape 17 and the back frame 21, thereby increasing the light-shielding tape 17 The bonding strength with the back frame 21.
  • the first positioning portion is disposed on the light guide plate, and the positioning member is disposed with the second positioning portion disposed in cooperation with the first positioning portion, so that the first positioning portion and the second positioning portion are assembled when the optical component is assembled.
  • the part cooperates with the positioning, and the optical component is loaded into the accommodating space, so that the distance between the light guide plate and the backlight is less than or equal to the threshold, thereby preventing the distance between the light guide plate and the backlight from being excessive during the assembly process.
  • the light guide plate can not completely receive the light emitted by the backlight, improve the backlight efficiency of the light guide plate, and can improve the assembly precision and the assembly difficulty.
  • the light source is located in the second space segment of the accommodating space, and the second space
  • the cross-sectional area of the segment in the direction facing the side wall is larger than the cross-sectional area of the first space segment for accommodating the optical component, and can provide sufficient adjustment space when adjusting the height of the light source to prevent the adjustment space from being insufficient. Reducing the thickness of the first adhesive member, causing the thickness of the first adhesive member to be too small, so that the bonding strength between the light source and the bottom wall is insufficient, or Ensure that the thickness of the first adhesive member is not too small, resulting in the light source is not located at the optimum height position, the effect of reducing the backlight light guide plate.
  • FIG. 7 is a schematic structural diagram of an embodiment of an electronic device 30 provided by the present application.
  • the electronic device in this embodiment may be any device having communication and storage functions, such as a tablet computer, a mobile phone, an e-reader, and a remote controller. , Personal computers (PCs), laptops, in-vehicle devices, Internet TVs, wearable devices, and other smart devices with network capabilities.
  • PCs Personal computers
  • laptops in-vehicle devices
  • Internet TVs Internet TVs
  • wearable devices wearable devices with network capabilities.
  • the electronic device 30 includes a backlight module 31 and a display module 32.
  • the backlight module 31 is a backlight module in any of the above embodiments.
  • the backlight module 20 in the second embodiment is taken as an example.
  • the display modules 32 are stacked on the backlight module 31.
  • the display module 32 is carried on the top wall 113.

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Abstract

一种背光模组(10，20，31)及电子设备(30)。通过背光模组(10，20，31)，使得在光学组件(12)装配时，第一定位部(1213)与第二定位部(141)配合定位，将光学组件(12)装入容置空间(101，201)内，从而使得导光板(121)与背光源(13)之间的距离小于或等于阈值，防止在装配过程中，出现导光板(121)与背光源(13)之间的距离过大的情况导致导光板(121)不能完全接收背光源(13)发出的光线，提高了导光板(121)的背光效率，且能够提高装配精度、降低装配难度。

Description

一种背光模组及电子设备 【技术领域】
本申请涉及电子设备技术领域，具体是涉及一种背光模组及电子设备。
【背景技术】
电子设备的背光模组中包括光学组件及背光源，在装配过程中，容易出现光学组件的导光板与背光源的距离过大，导致导光板不能完全接收背光源发出的光线，从而降低导光板的背光效果的问题。
【发明内容】
本申请实施例一方面提供了一种背光模组，所述背光模组包括：背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位部；背光源，设置于导光板靠近所述侧壁的一侧；定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值；其中，所述第一定位部为凹槽，所述第二定位部为与所述凹槽配合的凸起。
本申请实施例另一方面提供了一种背光模组，所述背光模组包括背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位部；背光源，设置于导光板靠近所述侧壁的一侧；定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值。
进一步的，本申请实施例还提供一种电子设备，所述电子设备包括显示模组及背光模组，所述显示模组层叠设置于所述背光模组上，所述背光模组包括：背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光 板，所述导光板设有第一定位部；背光源，设置于导光板靠近所述侧壁的一侧；定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值。
【附图说明】
为了更清楚地说明本发明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发明的一些实施例，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，其中：
图1是本申请提供的背光模组第一实施例的结构示意图；
图2是图1中A-A向的截面示意图；
图3是图1中B-B向的截面示意图；
图4是图1中遮光胶带与背框的另一装配示意图；
图5是本申请提供的背光模组第二实施例的截面示意图；
图6是图5中背框的结构示意图；
图7是本申请提供的电子设备实施例的结构示意图。
【具体实施方式】
下面结合附图和实施例，对本申请作进一步的详细描述。特别指出的是，以下实施例仅用于说明本申请，但不对本申请的范围进行限定。同样的，以下实施例仅为本申请的部分实施例而非全部实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
一种背光模组，其中，所述背光模组包括：背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位 部；背光源，设置于导光板靠近所述侧壁的一侧；定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值；其中，所述第一定位部为凹槽，所述第二定位部为与所述凹槽配合的凸起。
其中，所述定位件包括主体部及延伸部，所述主体部与所述背框连接，所述延伸部自所述主体部向所述容置空间延伸，所述第二定位部设置于所述延伸部上。
其中，所述侧壁的数量为至少两个，所述至少两个侧壁弯折连接，所述主体部设置于所述至少两个侧壁的连接处，所述延伸部自所述主体部向所述至少两个侧壁中的至少一个与所述导光板之间延伸。
一种背光模组，其中，所述背光模组包括：背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位部；背光源，设置于导光板靠近所述侧壁的一侧；定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值。
其中，所述定位件包括主体部及延伸部，所述主体部与所述背框连接，所述延伸部自所述主体部向所述容置空间延伸，所述第二定位部设置于所述延伸部上。
其中，所述侧壁的数量为至少两个，所述至少两个侧壁弯折连接，所述主体部设置于所述至少两个侧壁的连接处，所述延伸部自所述主体部向所述至少两个侧壁中的至少一个与所述导光板之间延伸。
其中，所述背框进一步包括顶壁，所述顶壁在所述侧壁远离所述底壁的一端与所述侧壁弯折连接，并与所述侧壁及所述底壁共同形成所述容置空间，所述定位件在所述顶壁远离所述容置空间的一侧与所述顶壁平齐。
其中，所述第一定位部为凹槽，所述第二定位部为与所述凹槽配合的凸起。
其中，所述凸起朝向所述凹槽延伸的方向平行于所述背光源。
其中，所述阈值小于或等于0.1mm。
其中，所述背光源包括灯源及柔性电路板，所述灯源设置于所述导光板靠 近所述侧壁的一侧，所述柔性电路板在所述灯源远离所述导光板的一侧贴设于所述灯源。
其中，所述导光板包括入光面及出光面，所述灯源设置于所述导光板的入光面的一侧，且相对于所述导光板位于最佳发光位置。
其中，所述最佳发光位置为所述导光板能够完全接收所述灯源发出的光线的位置。
其中，所述最佳发光位置包括最佳高度位置及最佳距离位置。
其中，所述灯源与所述底壁之间设有第一粘贴件，所述灯源通过所述第一粘贴件粘接于所述底壁，且使得所述灯源相对于所述导光板位于所述最佳高度位置。
其中，所述灯源与所述侧壁之间设有第二粘贴件，所述灯源通过所述第二粘贴件粘接于所述侧壁，且使得所述灯源相对于所述导光板位于所述最佳距离位置。
其中，所述容置空间包括在面向所述侧壁的方向上依次连接的第一空间段及第二空间段，所述第一空间段用于容置所述光学组件，所述第二空间段在面向所述侧壁的方向上的截面面积大于所述第一空间段的截面面积，所述灯源设置于所述第二空间段内。
其中，所述光学组件进一步包括光学膜片组，所述光学膜片组位于所述导光板的出光面的一侧设置于所述导光板上，所述背光模组进一步包括遮光胶带，所述遮光胶带在所述顶壁远离所述容置空间的一侧粘贴于所述顶壁及所述光学膜片组。
其中，所述遮光胶带进一步在所述侧壁远离所述容置空间的一侧粘贴于所述侧壁。
一种电子设备，其中，所述电子设备包括显示模组及背光模组，所述显示模组层叠设置于所述背光模组上，所述背光模组包括：背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位部；背光源，设置于导光板靠近所述侧壁的一侧；定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值。
请参阅图1，图1是本申请提供的背光模组10第一实施例的结构示意图，本实施例的背光模组10包括背框11、光学组件12、背光源13及定位件14。
共同参阅图1及图2，背框11包括侧壁111及底壁112，侧壁111与底壁112弯折连接，并形成一容置空间101。
可选的，侧壁111的数量为至少两个，至少两个侧壁111弯折连接。
可选的，背框11还包括顶壁113，顶壁113在侧壁111远离底壁112的一端与侧壁111弯折连接，并与侧壁111及底壁112共同形成上述的容置空间101，该顶壁113用于在背光模组10与电子设备的显示模组装配时，承载显示模组。
进一步的，如图1所示，背框11设有连通容置空间101的开口1111。
可选的，背框11为金属背框。
光学组件12位于容置空间101内，且设置于底壁112上。
其中，光学组件12包括导光板121，导光板121包括入光面1211及出光面1212，入光面1211为导光板121靠近侧壁111的一面，出光面1212为导光板121远离底壁112的一面，且如图1所示的，导光板121设有第一定位部1213。
可选的，第一定位部1213为凹槽。
进一步的，光学组件12还包括光学膜片组122及反射片123，光学膜片组122位于导光板121的出光面1212的一侧设置于导光板121上，反射片123在导光板121远离出光面1212的一侧设置于底壁112上。
其中，光学膜片组122包括在远离导光板121的方向上依次层叠设置的扩散膜122a、下增透膜122b及上增透膜122c。
背光源13设置于导光板121靠近侧壁111的一侧，具体的，背光源13设置于导光板121靠近至少两个侧壁111中的一个的一侧。
其中，背光源13包括灯源131及柔性电路板132。
灯源131设置于导光板121靠近侧壁111的一侧，具体的，灯源131设置于导光板121的入光面1211的一侧，以通过入光面1211向导光板121发射光线。
其中，灯源131包括PCB电路板131a、封装件131b及发光单元131c，PCB电路板131a设置于导光板121靠近侧壁111的一侧，封装件131b在PCB电路板131a靠近导光板121的一侧与PCB电路板131a连接，且设有封装槽1311，发光单元131c贴装于PCB电路板131a且封装于封装槽1311内，并通过封装槽1311向导光板121发射光线。
可选的，发光单元131c为LED芯片。
进一步的，灯源131相对于导光板121位于最佳发光位置。
其中，最佳发光位置为导光板121能够完全接收灯源131发出的光线的位置，该最佳发光位置为最佳高度位置及最佳距离位置，可以理解的，若灯源131在垂直于底壁112的方向上的高度过高或过低，都有可能导致导光板121不能够完全接收灯源131发出的光线，若灯源131与导光板121的距离过大，也有可能导致灯源131发出的光线从导光板121漏出而不能被导光板121完全接收，从而降低光源131的光源利用率及导光板121的背光效果。
可选的，灯源131的发光单元131c位于导光板121的中心线位置。
可选的，灯源131与底壁112之间设有第一粘贴件15，灯源131通过第一粘贴件15粘接于底壁112，且使得灯源131相对于导光板121位于最佳高度位置，也即本实施例中，在通过第一粘贴件15将灯源131固定粘接于底壁112上的同时，可通过调节第一粘贴件15的厚度，使得灯源131相对于导光板121位于最佳高度位置，以提高光源131的光源利用率及导光板121的背光效果。
可选的，第一粘贴件15为双面胶。
可选的，灯源131与侧壁111之间设有第二粘贴件16，灯源131通过第二粘贴件16粘接于侧壁111，且使得灯源131相对于导光板121位于最佳距离位置，也即本实施例中，在通过第二粘贴件16将灯源131固定粘接于侧壁111上的同时，可通过调节第二粘贴件16的厚度，使得灯源131相对于导光板121位于最佳距离位置，以提高光源131的光源利用率及导光板121的背光效果。
共同参阅图1、图2及图3，柔性电路板132在灯源131远离导光板121的一侧贴设于灯源131，以使得在朝向侧壁111的方向上，柔性电路板132不需要为与灯源131的焊接提供焊接空间，从而在垂直于侧壁111的方向上，省去了该空间，降低了背光模组10在垂直于侧壁111的方向上的宽度，实现背光模组111的窄边化。
具体的，柔性电路板132在PCB电路板131a远离发光单元131c的一侧贴设于PCB电路板131a，且如图1所示的，通过开口1111延伸至背框11远离容置空间101的一侧。
其中，柔性电路板132与第二粘贴件15同层贴设于PCB电路板131a。
定位件14与背框11连接且至少部分设置于容置空间101内。
具体的，定位件14包括主体部14a及延伸部14b，主体部14a与背框11连 接，延伸部14b自主体部14a向容置空间101延伸，在本实施例图示中，主体部14a至少部分设置于容置空间101内与背框11连接，延伸部14b自主体部14a位于容置空间101内的部分延伸。
可选的，主体部14a设置于至少两个侧壁111的弯折连接处，延伸部14b自主体部14a向至少两个侧壁111中的至少一个与导光板121之间延伸，在本实施例中，延伸部14b自主体部14a向导光板121与至少两个侧壁111之间没有设置背光源13的一侧延伸。
可选的，定位件14在顶壁113远离容置空间101的一侧与顶壁113平齐，从而与顶壁113共同承载电子设备的显示模组，在本实施例中，主体部14a在顶壁113远离容置空间101的一侧与顶壁113平齐。
进一步的，定位件14设有第二定位部141，该第二定位部141与第一定位部1213配合设置，以使得导光板121与背光源13之间的距离小于或等于阈值。
可以理解的，在背光模组10装配时，需要先将背光源13装入背框11的容置空间101内，然后再将光学组件12装入容置空间101内，此时，光学组件12中的导光板121与背光源13之间需要预留一个装配间隙，也即在光线组件12装入容置空间101后，导光板121与背光源13之间具有一个间隙，但是在实际装配的过程中，光线组件12装入容置空间101后，容易出现导光板121与背光源13之间的间隙过大，从而导致导光板121不能完全接收背光源13发出的光线，进而降低导光板121的背光效果，本实施例中通过定位件14的第二定位部141与导光板121的第一定位部1213配合设置，在装配时，通过第一定位部1213与第二定位部141配合定位的方式，将光学组件12装入容置空间101内，使得导光板121与背光源13之间的距离小于或等于阈值，防止在装配过程中，出现导光板121与背光源13之间的距离过大的情况，且能够提高装配精度、降低装配难度。
可选的，第二定位部141为与第一定位部1213的凹槽配合的凸起，且该凸起朝向凹槽的方向平行于背光源13。
可选的，上述的阈值小于或等于0.1mm。
进一步的，本实施例的背光模组10还包括遮光胶带17，遮光胶带17在顶壁113远离容置空间101的一侧粘贴于顶壁113及光学膜片组12，以在光学膜片组12发光时，防止光学膜片组12漏光。
具体的，遮光胶带17在顶壁113远离容置空间101的一侧粘贴于顶壁113 及光学膜片组12的上增透膜122c。
参阅图4，在其他实施例中，遮光胶带17还在侧壁111远离容置空间101的一侧粘贴于侧壁111，以增加遮光胶带17与背框11的粘贴面积，从而增加遮光胶带17与背框11的粘贴强度。
本实施例提供的背光模组，通过在导光板设置第一定位部，定位件设置于与第一定位部配合设置的第二定位部，使得在光学组件装配时，第一定位部与第二定位部配合定位，将光学组件装入容置空间内，从而使得导光板与背光源之间的距离小于或等于阈值，防止在装配过程中，出现导光板与背光源之间的距离过大的情况导致导光板不能完全接收背光源发出的光线，提高了导光板的背光效率，且能够提高装配精度、降低装配难度。
参阅图5，图5是本申请提供的背光模组20第二实施例的截面示意图，本实施例的背光模组20包括背框21、光学组件12及背光源13及定位件14。
共同参阅图5及图6，背框21包括侧壁111及底壁212，侧壁111与底壁212弯折连接，并形成一容置空间201。
可选的，侧壁111的数量为至少两个，至少两个侧壁111弯折连接。
可选的，背框11还包括顶壁113，顶壁113在侧壁111远离底壁112的一端与侧壁111弯折连接，并与并与侧壁111及底壁212共同形成上述的容置空间201，该顶壁113用于在背光模组10与电子设备的显示模组装配时，承载显示模组。
其中，容置空间201包括在面向侧壁111的方向上依次连接的第一空间段2011及第二空间段2012，且第二空间段2012在面向侧壁111的方向上的截面面积大于第一空间段2011的截面面积。
具体的，侧壁212包括在面向侧壁111的方向上依次连接的第一壁段2121及第二壁段2122，且如图6所示的第二壁段2122与顶壁113之间的垂直距离大于第一壁段2121与顶壁113之间垂直的距离，以在形成容置空间201时，在面向侧壁111的方向上，位于第二壁段2122的第二空间段2012的截面面积大于位于第一壁段2121的第一空间段2011的截面面积。
进一步的，背框21设有连通容置空间201的开口1111。
可选的，背框21为金属背框。
光学组件12位于容置空间201内，且设置于底壁212上。
具体的，容置空间201的第一空间段2011用于容置该光学组件12。
其中，光学组件12包括导光板121，导光板121包括入光面1211及出光面1212，入光面1211为导光板121靠近侧壁111的一面，出光面1212为导光板121远离底壁112的一面，进一步的，导光板121设有第一定位部1213。
可选的，第一定位部1213为凹槽。
进一步的，光学组件12还包括光学膜片组122及反射片123，光学膜片组122位于导光板121的出光面1212的一侧设置于导光板121上，反射片123在导光板121远离出光面1212的一侧设置于底壁112上。
其中，光学膜片组122包括在远离导光板121的方向上依次层叠设置的扩散膜122a、下增透膜122b及上增透膜122c。
背光源13设置于导光板121靠近侧壁111的一侧，具体的，背光源13设置于导光板121靠近至少两个侧壁111中的一个的一侧。
其中，背光源13包括灯源131及柔性电路板132。
灯源131设置于导光板121靠近侧壁111的一侧，具体的，灯源131设置于导光板121的入光面1211的一侧，以通过入光面1211向导光板121发射光线。
进一步的，灯源131设置于第二空间段2012内。
其中，灯源131包括PCB电路板131a、封装件131b及发光单元131c，PCB电路板131a设置于导光板121靠近侧壁111的一侧，封装件131b在PCB电路板131a靠近导光板121的一侧与PCB电路板131a连接，且设有封装槽1311，发光单元131c贴装于PCB电路板131a且封装于封装槽1311内，并通过封装槽1311向导光板121发射光线。
可选的，发光单元131c为LED芯片。
进一步的，灯源131相对于导光板121位于最佳发光位置。
其中，最佳发光位置为导光板121能够完全接收灯源131发出的光线的位置，该最佳发光位置为最佳高度位置及最佳距离位置，可以理解的，若灯源131在垂直于底壁112的方向上的高度过高或过低，都有可能导致导光板121不能够完全接收灯源131发出的光线，若灯源131与导光板121的距离过大，也有可能导致灯源131发出的光线从导光板121漏出而不能被导光板121完全接收，从而降低光源131的光源利用率及导光板121的背光效果。
可选的，灯源131的发光单元131c位于导光板121的中心线位置。
可选的，灯源131与底壁112之间设有第一粘贴件15，灯源131通过第一 粘贴件15粘接于底壁112，且使得灯源131相对于导光板121位于最佳高度位置，也即本实施例中，在通过第一粘贴件15将灯源131固定粘接于底壁112上的同时，可通过调节第一粘贴件15的厚度，使得灯源131相对于导光板121位于最佳高度位置，以提高光源131的光源利用率及导光板121的背光效果。
进一步的，由于灯源131设置于第二空间段2012内，且第二空间段2012在垂直于侧壁111的方向上的截面面积大于第一空间段2011的截面面积，因此，灯源131设置于第二空间段2012内，能够在调节灯源132的高度时，提供足够的调整空间，防止空间不足时，需要通过降低第一粘贴件15的厚度，而导致第一粘贴件15的厚度过小，从而使得灯源131与底壁112的粘贴强度不足，或者为了保证第一粘贴件15的厚度不会过小，而导致灯源131没有位于最佳高度位置，降低导光板121的背光效果的情况。
可选的，第一粘贴件15为双面胶。
可选的，灯源131与侧壁111之间设有第二粘贴件16，灯源131通过第二粘贴件16粘接于侧壁111，且使得灯源131相对于导光板121位于最佳距离位置，也即本实施例中，在通过第二粘贴件16将灯源131固定粘接于侧壁111上的同时，可通过调节第二粘贴件16的厚度，使得灯源131相对于导光板121位于最佳距离位置，以提高光源131的光源利用率及导光板121的背光效果。
柔性电路板132在灯源131远离光学组件的一侧贴设于灯源131导光板121的一侧贴设于灯源131，以使得在朝向侧壁111的方向上，柔性电路板132不需要为与灯源131的焊接提供焊接空间，从而在垂直于侧壁111的方向上，省去了该空间，降低了背光模组10在垂直于侧壁111的方向上的宽度，实现背光模组111的窄边化。
具体的，柔性电路板132在PCB电路板131a远离发光单元131c的一侧贴设于PCB电路板131a，且通过开口1111延伸至背框11远离容置空间101的一侧。
其中，柔性电路板132与第二粘贴件15同层贴设于PCB电路板131a。
定位件14与背框11连接且至少部分设置于容置空间101内。
具体的，定位件14包括主体部14a及延伸部14b，主体部14a与背框11连接，延伸部14b自主体部14a向容置空间101延伸，在本实施例图示中，主体部14a至少部分设置于容置空间101内与背框11连接，延伸部14b自主体部14a位于容置空间101内的部分延伸。
可选的，主体部14a设置于至少两个侧壁111的弯折连接处，延伸部14b自主体部14a向至少两个侧壁111中的至少一个与导光板121之间延伸，在本实施例中，延伸部14b自主体部14a向导光板121与至少两个侧壁111之间没有设置背光源13的一侧延伸。
可选的，定位件14在顶壁113远离容置空间101的一侧与顶壁113平齐，从而与顶壁113共同承载电子设备的显示模组，在本实施例中，主体部14a在顶壁113远离容置空间101的一侧与顶壁113平齐。
进一步的，定位件14设有第二定位部141，该第二定位部141与第一定位部1213配合设置，以使得导光板121与背光源13之间的距离小于或等于阈值。
可以理解的，在背光模组10装配时，需要先将背光源13装入背框11的容置空间101内，然后再将光学组件12装入容置空间101内，此时，光学组件12中的导光板121与背光源13之间需要预留一个装配间隙，也即在光线组件12装入容置空间101后，导光板121与背光源13之间具有一个间隙，但是在实际装配的过程中，光线组件12装入容置空间101后，容易出现导光板121与背光源13之间的间隙过大，从而导致导光板121不能完全接收背光源13发出的光学，进而降低导光板121的背光效果，本实施例中通过定位件14的第二定位部141与导光板121的第一定位部1213配合设置，在装配时，通过第一定位部1213与第二定位部141配合定位的方式，将光学组件12装入容置空间101内，使得导光板121与背光源13之间的距离小于或等于阈值，防止在装配过程中，出现导光板121与背光源13之间的距离过大的情况，且能够提高装配精度、降低装配难度。
可选的，第二定位部141为与第一定位部1213的凹槽配合的凸起，且该凸起朝向凹槽的方向平行于背光源13。
可选的，上述的阈值小于或等于0.1mm。
进一步的，本实施例的背光模组20还包括遮光胶带17，遮光胶带17在顶壁113远离容置空间201的一侧粘贴于顶壁113及光学膜片组12，以在光学膜片组12发光时，防止光学膜片组12漏光。
具体的，遮光胶带17在顶壁113远离容置空间201的一侧粘贴于顶壁113及光学膜片组12的上增透膜122c。
可选的，在其他实施例中，遮光胶带17还在侧壁111远离容置空间201的一侧粘贴于侧壁111，以增加遮光胶带17与背框21的粘贴面积，从而增加遮光 胶带17与背框21的粘贴强度。
本实施例提供的背光模组，通过在导光板设置第一定位部，定位件设置与第一定位部配合设置的第二定位部，使得在光学组件装配时，第一定位部与第二定位部配合定位，将光学组件装入容置空间内，从而使得导光板与背光源之间的距离小于或等于阈值，防止在装配过程中，出现导光板与背光源之间的距离过大的情况导致导光板不能完全接收背光源发出的光学，提高了导光板的背光效率，且能够提高装配精度、降低装配难度，并进一步的，将灯源位于容置空间的第二空间段，第二空间段在面向侧壁的方向上的截面面积大于用于容置光学组件的第一空间段的截面面积，能够在调整灯源的高度时，提供足够的调整空间，防止调整空间不足时，需要通过降低第一粘贴件的厚度，而导致第一粘贴件的厚度过小，从而使得灯源与底壁的粘贴强度不足，或者为了保证第一粘贴件的厚度不会过小，而导致灯源没有位于最佳高度位置，降低导光板的背光效果的情况。
参阅图7，图7是本申请提供的电子设备30实施例的结构示意图，本实施例的电子设备可以是任何具备通信和存储功能的设备，例如：平板电脑、手机、电子阅读器、遥控器、个人计算机(Personal Computer，PC)、笔记本电脑、车载设备、网络电视、可穿戴设备等具有网络功能的智能设备。
该电子设备30包括背光模组31及显示模组32，该背光模组31为上述任一实施例中的背光模组，具体可参阅上述任一实施例的具体描述，在此不再赘述，本实施例图示中以第二实施例中的背光模组20为例。
其中，显示模组32层叠设置于背光模组31上。
进一步的，显示模组32承载于顶壁113上。
以上所述仅为本申请的部分实施例，并非因此限制本申请的保护范围，凡是利用本申请说明书及附图内容所作的等效装置或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (20)

  1. 一种背光模组，其中，所述背光模组包括：
    背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；
    光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位部；
    背光源，设置于导光板靠近所述侧壁的一侧；
    定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值；
    其中，所述第一定位部为凹槽，所述第二定位部为与所述凹槽配合的凸起。
  2. 根据权利要求1所述的背光模组，其中，所述定位件包括主体部及延伸部，所述主体部与所述背框连接，所述延伸部自所述主体部向所述容置空间延伸，所述第二定位部设置于所述延伸部上。
  3. 根据权利要求2所述的背光模组，其中，所述侧壁的数量为至少两个，所述至少两个侧壁弯折连接，所述主体部设置于所述至少两个侧壁的连接处，所述延伸部自所述主体部向所述至少两个侧壁中的至少一个与所述导光板之间延伸。
  4. 一种背光模组，其中，所述背光模组包括：
    背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；
    光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位部；
    背光源，设置于导光板靠近所述侧壁的一侧；
    定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值。
  5. 根据权利要求4所述的背光模组，其中，所述定位件包括主体部及延伸部，所述主体部与所述背框连接，所述延伸部自所述主体部向所述容置空间延伸，所述第二定位部设置于所述延伸部上。
  6. 根据权利要求5所述的背光模组，其中，所述侧壁的数量为至少两个， 所述至少两个侧壁弯折连接，所述主体部设置于所述至少两个侧壁的连接处，所述延伸部自所述主体部向所述至少两个侧壁中的至少一个与所述导光板之间延伸。
  7. 根据权利要求4所述的背光模组，其中，所述背框进一步包括顶壁，所述顶壁在所述侧壁远离所述底壁的一端与所述侧壁弯折连接，并与所述侧壁及所述底壁共同形成所述容置空间，所述定位件在所述顶壁远离所述容置空间的一侧与所述顶壁平齐。
  8. 根据权利要求4所述的背光模组，其中，所述第一定位部为凹槽，所述第二定位部为与所述凹槽配合的凸起。
  9. 根据权利要求8所述的背光模组，其中，所述凸起朝向所述凹槽延伸的方向平行于所述背光源。
  10. 根据权利要求4所述的背光模组，其中，所述阈值小于或等于0.1mm。
  11. 根据权利要求4所述的背光模组，其中，所述背光源包括灯源及柔性电路板，所述灯源设置于所述导光板靠近所述侧壁的一侧，所述柔性电路板在所述灯源远离所述导光板的一侧贴设于所述灯源。
  12. 根据权利要求11所述的背光模组，其中，所述导光板包括入光面及出光面，所述灯源设置于所述导光板的入光面的一侧，且相对于所述导光板位于最佳发光位置。
  13. 根据权利要求12所述的背光模组，其中，所述最佳发光位置为所述导光板能够完全接收所述灯源发出的光线的位置。
  14. 根据权利要求12所述的背光模组，其中，所述最佳发光位置包括最佳高度位置及最佳距离位置。
  15. 根据权利要求14所述的背光模组，其中，所述灯源与所述底壁之间设有第一粘贴件，所述灯源通过所述第一粘贴件粘接于所述底壁，且使得所述灯源相对于所述导光板位于所述最佳高度位置。
  16. 根据权利要求14所述的背光模组，其中，所述灯源与所述侧壁之间设有第二粘贴件，所述灯源通过所述第二粘贴件粘接于所述侧壁，且使得所述灯源相对于所述导光板位于所述最佳距离位置。
  17. 根据权利要求11所述的背光模组，其中，所述容置空间包括在面向所述侧壁的方向上依次连接的第一空间段及第二空间段，所述第一空间段用于容置所述光学组件，所述第二空间段在面向所述侧壁的方向上的截面面积大于所 述第一空间段的截面面积，所述灯源设置于所述第二空间段内。
  18. 根据权利要求7所述的背光模组，其中，所述光学组件进一步包括光学膜片组，所述光学膜片组位于所述导光板的出光面的一侧设置于所述导光板上，所述背光模组进一步包括遮光胶带，所述遮光胶带在所述顶壁远离所述容置空间的一侧粘贴于所述顶壁及所述光学膜片组。
  19. 根据权利要求18所述的背光模组，其中，所述遮光胶带进一步在所述侧壁远离所述容置空间的一侧粘贴于所述侧壁。
  20. 一种电子设备，其中，所述电子设备包括显示模组及背光模组，所述显示模组层叠设置于所述背光模组上，所述背光模组包括：
    背框，包括侧壁及底壁，所述侧壁与所述底壁弯折连接，并形成一容置空间；
    光学组件，位于所述容置空间内且设置于所述底壁上，所述光学组件包括导光板，所述导光板设有第一定位部；
    背光源，设置于导光板靠近所述侧壁的一侧；
    定位件，与所述背框连接且至少部分设置于所述容置空间内，所述定位件设有第二定位部，所述第一定位部与所述第二定位部配合设置，以使得所述导光板与所述背光源之间的距离小于或等于阈值。
PCT/CN2018/120028 2018-01-31 2018-12-10 一种背光模组及电子设备 WO2019148967A1 (zh)

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