WO2019149085A1 - 电子装置及其显示组件、背光模组 - Google Patents

电子装置及其显示组件、背光模组 Download PDF

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Publication number
WO2019149085A1
WO2019149085A1 PCT/CN2019/072194 CN2019072194W WO2019149085A1 WO 2019149085 A1 WO2019149085 A1 WO 2019149085A1 CN 2019072194 W CN2019072194 W CN 2019072194W WO 2019149085 A1 WO2019149085 A1 WO 2019149085A1
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WO
WIPO (PCT)
Prior art keywords
light
light shielding
guide plate
disposed
light guide
Prior art date
Application number
PCT/CN2019/072194
Other languages
English (en)
French (fr)
Inventor
陆忠恒
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
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 EP19748254.0A priority Critical patent/EP3726285B1/en
Publication of WO2019149085A1 publication Critical patent/WO2019149085A1/zh
Priority to US16/915,393 priority patent/US11187850B2/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
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour 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
    • G02B6/0081—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
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • G02B6/009—Positioning aspects of the light source 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
    • 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

Definitions

  • the present invention relates to the field of backlight technology for electronic devices, and in particular, to an electronic device, a display assembly thereof, and a backlight module.
  • the backlight module is an important component of the electronic device.
  • the backlight module of the portable electronic device such as a smart phone usually adopts a side-in backlight module, that is, the light emitted by the light source is incident on the light guide plate from the side of the light guide plate, so that the light guide plate is The display panel of the electronic device provides backlight.
  • the light source of the side-lit backlight module and some related structures need to be disposed on the side of the light guide plate, a large non-display area is occupied, which is disadvantageous for the narrow frame and The realization of the full screen, how to shorten the width of the backlight module in the non-display area without affecting the normal display of the backlight module and the display panel has become a focus of attention.
  • a technical solution adopted in the embodiment of the present application is to provide a backlight module, the backlight module includes: a light guide plate; and a plurality of light sources are disposed on the side of the light guide plate and spaced apart in the width direction of the light guide plate;
  • the optical component is disposed on the light guide plate;
  • the flexible circuit board is partially disposed on the region where the light guide plate is not covered by the light homogenizing component, and the flexible circuit board and the light homogenizing component have a reserved gap;
  • the light shielding layer is disposed on the backlight module
  • the light shielding layer includes a plurality of first light shielding portions and a plurality of second light shielding portions, and the first light shielding portion is disposed in a region corresponding to the light source, in the non-display region, and is configured to block the light emitted by the light source through the reserved gap.
  • the two light shielding portions are disposed in a region corresponding to the interval region between the adjacent two light sources, and the thickness of the first light
  • Another technical solution adopted by the embodiment of the present application is to provide a display component, which includes a display panel and a backlight module for providing backlight for the display panel, and the backlight module of the backlight module.
  • Yet another technical solution adopted by the embodiment of the present application is to provide an electronic device including the above display component.
  • FIG. 1 is a schematic view showing a positional relationship between a light guide plate, a light shielding layer, and a light source in a top view of a light guide plate according to an embodiment of the present application;
  • FIG. 2 is a cross-sectional structural view of the backlight module of the embodiment of the present application taken along line A-A of FIG. 1;
  • FIG. 3 is a cross-sectional structural view of the backlight module of the embodiment of the present application taken along line B-B of FIG. 1;
  • FIG. 4 is a schematic view showing the shading principle of the light shielding layer of the backlight module shown in FIG. 2;
  • FIG. 5 is a schematic diagram of the shading principle of the backlight module of the backlight unit shown in FIG. 3;
  • FIG. 6 is a schematic structural diagram of a backlight module according to another embodiment of the present application.
  • FIG. 7 is a schematic exploded view of an electronic device according to an embodiment of 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.
  • An embodiment of the present application provides a backlight module, where the backlight module includes:
  • a plurality of light sources are disposed on the side of the light guide plate and spaced apart in the width direction of the light guide plate;
  • a flexible circuit board partially disposed on an area of the light guide plate not covered by the light homogenizing element, wherein the flexible circuit board and the light homogenizing element have a reserved gap;
  • a light shielding layer is disposed in the non-display area of the backlight module, and is configured to block light emitted by the light source and leak through the reserved gap, wherein the light shielding layer includes a plurality of first light shielding portions and a plurality of a second light shielding portion, the first light shielding portion is disposed in a region corresponding to the light source, and the second light shielding portion is disposed in an area corresponding to an interval region between two adjacent light sources, the first light shielding portion The thickness is greater than the thickness of the second light shielding portion.
  • the light guide plate includes a light incident end portion and a light guide plate main body portion, and the plurality of light sources are disposed at a side of the light incident end portion facing away from the light guide plate main body portion, and the light homogenizing element is disposed at the On the main body of the light guide plate.
  • the light shielding layer is disposed between the light homogenizing element and the light guide plate, and a coverage area of the light shielding layer corresponds to an end of the light homogenizing element or the light guide plate near an end of the light source. region.
  • the light concentrating element includes a diffusion film, a first brightness enhancement film, and a second brightness enhancement film disposed in a direction away from the light guide plate, and the light shielding layer is disposed between the diffusion film and the first brightness enhancement film. Or the light shielding layer is disposed between the first brightness enhancement film and the second brightness enhancement film.
  • the first light shielding portion gradually decreases in thickness in a direction away from the light guide plate.
  • the backlight module further includes a light shielding tape disposed on a side of the flexible circuit board away from the light source, and the light shielding tape is connected to the light homogenizing element.
  • the backlight module further includes a connecting tape, and the flexible circuit board portion passes through the connecting tape on a region where the light guide plate is not covered by the light-shaping element, and the thickness of the first light-shielding portion is smaller than the connection.
  • the thickness of the tape is smaller than the connection.
  • the light shielding layer is formed by a printing or coating process, and the number of times of printing or coating forming the first light shielding portion is greater than the number of printing or coating of the second light shielding portion.
  • the light shielding layer is formed by a photolithography or etching process, and the photolithography or etching degree of forming the first light shielding portion is smaller than the photolithography or etching degree of the second light shielding portion.
  • the backlight module includes:
  • a plurality of light sources are disposed on the side of the light guide plate and spaced apart in the width direction of the light guide plate;
  • a flexible circuit board partially disposed on an area of the light guide plate not covered by the light homogenizing element, wherein the flexible circuit board and the light homogenizing element have a reserved gap;
  • a light shielding layer is disposed in the non-display area of the backlight module, and is configured to block light emitted by the light source and leak through the reserved gap, wherein the light shielding layer includes a plurality of first light shielding portions and a plurality of a second light shielding portion, the first light shielding portion is disposed in a region corresponding to the light source, and the second light shielding portion is disposed in an area corresponding to an interval region between two adjacent light sources, the first light shielding portion The thickness is greater than the thickness of the second light shielding portion.
  • the light guide plate includes a light incident end portion and a light guide plate main body portion, and the plurality of light sources are disposed at a side of the light incident end portion facing away from the light guide plate main body portion, and the light homogenizing element is disposed at the On the main body of the light guide plate.
  • the light shielding layer is disposed between the light homogenizing element and the light guide plate, and a coverage area of the light shielding layer corresponds to an end of the light homogenizing element or the light guide plate near an end of the light source. region.
  • the light concentrating element includes a diffusion film, a first brightness enhancement film, and a second brightness enhancement film disposed in a direction away from the light guide plate, and the light shielding layer is disposed between the diffusion film and the first brightness enhancement film. Or the light shielding layer is disposed between the first brightness enhancement film and the second brightness enhancement film.
  • the first light shielding portion gradually decreases in thickness in a direction away from the light guide plate.
  • the backlight module further includes a light shielding tape disposed on a side of the flexible circuit board away from the light source, and the light shielding tape is connected to the light homogenizing element.
  • the backlight module further includes a connecting tape, and the flexible circuit board portion passes through the connecting tape on a region where the light guide plate is not covered by the light-shaping element, and the thickness of the first light-shielding portion is smaller than the connection.
  • the thickness of the tape is smaller than the connection.
  • the light shielding layer is formed by a printing or coating process, and the number of times of printing or coating forming the first light shielding portion is greater than the number of printing or coating of the second light shielding portion.
  • the light shielding layer is formed by a photolithography or etching process, and the photolithography or etching degree of forming the first light shielding portion is smaller than the photolithography or etching degree of the second light shielding portion.
  • An embodiment of the present application further provides an electronic device including a rear case, a middle frame, and a display component; the middle frame is fixedly connected to the rear case, and the display component is fixed to the middle frame;
  • the display assembly includes a display panel and a backlight module for providing backlighting for the display panel; the backlight module includes:
  • a plurality of light sources are disposed on the side of the light guide plate and spaced apart in the width direction of the light guide plate;
  • a flexible circuit board partially disposed on an area of the light guide plate not covered by the light homogenizing element, wherein the flexible circuit board and the light homogenizing element have a reserved gap;
  • a light shielding layer is disposed in the non-display area of the backlight module, and is configured to block light emitted by the light source and leak through the reserved gap, wherein the light shielding layer includes a plurality of first light shielding portions and a plurality of a second light shielding portion, the first light shielding portion is disposed in a region corresponding to the light source, and the second light shielding portion is disposed in an area corresponding to an interval region between two adjacent light sources, the first light shielding portion The thickness is greater than the thickness of the second light shielding portion.
  • the electronic device further includes a cover plate, and the cover plate is disposed on the display assembly.
  • FIG. 1 is a schematic diagram showing the positional relationship between the light guide plate, the light shielding layer and the light source in the top view of the light guide plate according to the embodiment of the present application.
  • 2 is a cross-sectional view of the backlight module of the embodiment of the present invention taken along line A-A of FIG. 1;
  • FIG. 3 is a cross-sectional structural view of the backlight module of the embodiment of the present application taken along line B-B of FIG.
  • the backlight module includes a back frame 11, a reflective sheet 12, a light guide plate 13, a light-receiving element 14, a light shielding layer 15, a flexible circuit board 16, a connecting tape 17, a light-shielding tape 18, and a first plastic frame 19.
  • the second plastic frame 20 and the plurality of light sources 21 are provided.
  • the back frame 11 is a box-shaped structure with an open side.
  • the back frame 11 includes a bottom wall 111 and a side wall 112.
  • the bottom wall 111 is bent and connected to the side wall 112.
  • the bottom wall 111 and the side wall 112 enclose a receiving cavity.
  • the material of the back frame 11 may be metal, for example, iron, aluminum, or the like.
  • the reflective sheet 12 is disposed on the bottom wall 111 of the back frame 11 and is located inside the accommodating cavity.
  • the light guide plate 13 is disposed on the reflective sheet 12 and located inside the accommodating cavity.
  • the light guide plate 13 includes a light incident end portion 131 and a light guide plate main body portion 132.
  • the thickness of the light incident end portion 131 of the light guide plate 13 near the light incident side thereof is larger than the thickness of the light guide plate main body portion 132.
  • the thickness of the light incident end portion 131 gradually decreases from the light incident side to the light incident side, and the light guide plate main body portion 132 has a uniform thickness, that is, the thickness is equal everywhere.
  • the plurality of light sources 21 are disposed on a region where the reflection sheet 12 is not covered by the light guide plate 13, and the plurality of light sources 21 are located on the side of the light guide plate 13.
  • the light source 21 is located on the light incident side of the light guide plate 13.
  • the light source 21 can be an LED light.
  • the light source 21 is disposed on a side of the light incident end portion 131 facing away from the light guide plate main body portion 132. For example, as shown in FIG. 2, the light source 21 is located on the left side of the light guide plate 13.
  • the light guide plate 13 may have a rectangular shape as viewed from the front side thereof, and a plurality of light sources 21 are spaced apart in the width direction of the light guide plate 13.
  • the light homogenizing element 14 is disposed on the light guide plate main body portion 132.
  • the light homogenizing element 14 includes a diffusion film 141, a first light-increasing film 142, and a second light-increasing film 143 which are disposed away from the light guide plate in sequence.
  • the diffusion film 141, the first brightness enhancement film 142, and the second brightness enhancement film 143 are mutually independent film layers, or at least two of the diffusion film 141, the first brightness enhancement film 142, and the second brightness enhancement film 143 are disposed as One.
  • the first plastic frame 19 is disposed on the bottom wall 111 of the back frame 11 and is disposed adjacent to the sidewall 112 of the back frame 11 .
  • the first plastic frame 19 is disposed on a side of the light source 21 away from the light guide plate 13.
  • the first plastic frame 19 is disposed on the left side of the light source 21, and a light mixing heat dissipation space is left between the first plastic frame 19 and the light source 21.
  • the flexible circuit board 16 is partially disposed on a region where the light guide plate 13 is not covered by the light homogenizing member 14, and a portion of the flexible circuit board 16 not disposed on the light guide plate 13 is disposed above the first plastic frame 19 and the light source 21.
  • the light source 21 is fixed to a lower surface of a portion of the flexible circuit board 16 that is not disposed on the light guide plate 13, and the light source 21 is electrically connected to the flexible circuit board 16.
  • a line on the flexible circuit board 16 connects the light source 21 to an external supply pin to enable the external supply pin to power the source 21.
  • the flexible circuit board 16 is bonded to a region where the light guide plate 13 is not covered by the light homogenizing element 14 by the connection tape 17.
  • the connecting tape 17 can be a double-sided tape. One surface of the double-sided tape is bonded to the lower surface of the corresponding position of the flexible circuit board 17, and the other surface is bonded to the upper surface of the corresponding position of the light guide plate 13.
  • the flexible circuit board 16 and the connecting tape 17 have a reserved gap a between the end of the light homogenizing element 14 and the end of the light homogenizing element 14 adjacent to the flexible circuit board 16.
  • the reserved gap a is used to match the assembly error on the one hand, and the backlight module can still be used normally under a certain degree of thermal deformation.
  • the light shielding tape 18 is disposed on the flexible circuit board 16 and disposed on a partial area of the light homogenizing element 14.
  • the light-shielding tape 18 can be bonded to the upper surface of the light-homing element 14 to fix the light-smoothing element 14.
  • the light-shielding tape 18 may include a first sub-shield tape portion 181 and a second sub-shield tape portion 182.
  • the first sub-shield tape portion 181 covers the flexible circuit board 16, and the second sub-shield tape portion 182 covers the uniform On a partial area of the light element 14.
  • the thickness of the first sub-shield tape portion 181 may be greater than the thickness of the second sub-shield tape portion 182.
  • the second frame 20 secures the light-shielding tape 18 and the flexible circuit board 16 on the side of the light-shielding tape 18 and the flexible circuit board 16 away from the light-shazing element 14 (for example, the left side shown in FIG. 2).
  • the first plastic frame 19 is located in the accommodating cavity of the back frame 11
  • the second plastic frame 20 is located outside the accommodating cavity of the back frame 11 .
  • the light shielding layer 15 is disposed in the non-display area of the backlight module, and is configured to block the light emitted by the light source 21 through the reserved gap a, so as to block the light leaked by the light source 21 through the reserved gap a through the light shielding layer 15.
  • the non-display area refers to an area covered by the light-shielding tape 18, and the display area refers to an area not covered by the light-shielding tape 18.
  • the light shielding layer 15 is disposed between the light homogenizing element 14 and the light guide plate 13 , and the coverage area of the light shielding layer 15 corresponds to the end of the light homogenizing element 14 or the light guide plate 13 adjacent to the end of the light source 21 .
  • the light shielding layer 15 may be disposed on the surface of the light homogenizing element 14 adjacent to the light guide plate 13 or on the surface of the light guide plate 13 close to the light homogenizing element 14.
  • the light shielding layer 15 may be disposed at any position in the non-display area as long as the light source 21 can be shielded from light leaking directly through the reserved gap a.
  • the light shielding layer may be disposed between the diffusion film 141 and the first brightness enhancement film 142. Specifically, it may be disposed on the surface of the diffusion film 141 adjacent to the first brightness enhancement film 142, or may be disposed near the first brightness enhancement film 142. On the surface of the diffusion film 141. The coverage area of the light shielding layer corresponds to the end region of the diffusion film 141 or the first light enhancement film 142 near one end of the light source 21.
  • the material of the light shielding layer 15 is a light shielding material.
  • the light shielding layer 15 may be a black ink layer.
  • the light shielding layer 15 may be formed by a printing or coating process.
  • the printing process can be a screen printing process.
  • the light shielding layer 15 includes a plurality of first light blocking portions 151 and a plurality of second light blocking portions 152 .
  • the first light blocking portion 151 is disposed in a region corresponding to the light source 13
  • the second light blocking portion 152 is disposed adjacent to the two light blocking portions 152 . 13 The area corresponding to the interval area between the light sources.
  • the number of times of printing or coating forming the first light blocking portion 151 is greater than the number of printing or coating of the second light blocking portion 152 such that the thickness of the first light blocking portion 151 is greater than the thickness of the second light blocking portion 152.
  • the light shielding layer 15 is formed between the light guide plate 13 and the light homogenizing element 14 and is formed on the upper surface of the light guide plate 13.
  • the first light shielding portion 151 is formed by the two printing processes on the upper surface of the light guide plate 13,
  • the two light shielding portions 151 are formed by the upper surface of the light guide plate 13 by a single printing process.
  • the specific number of times mentioned above may be other, which is not limited by the embodiment of the present application.
  • the thickness of the first light shielding portion 151 is smaller than the thickness of the connection tape 17 .
  • the thickness of the light shielding layer 15 (first light shielding portion 151) in the corresponding region of the light source 12 is larger than the thickness of the light shielding layer 15 (second light shielding portion 152) corresponding to the interval region between the adjacent two light sources 12, the light source can be avoided. 12
  • the problem is that the area where the light intensity is large and the light intensity between the adjacent two light sources 12 is relatively small, resulting in uneven brightness.
  • FIG. 2 is a cross-sectional view of a corresponding region of the light source, so that the light shielding layer 15 in FIG. 2 is specifically the first light shielding portion 151, and FIG. 3 is a cross-sectional view of the space between the adjacent two light sources. Therefore, the light shielding layer 15 in FIG. 3 is specifically the second light shielding portion 152.
  • the light shielding layer 15 may be formed by a photolithography or etching process.
  • the lithography or etching degree of forming the first light shielding portion 151 is smaller than the lithography or etching degree of the second light shielding portion 152 such that the thickness of the first light shielding portion 151 is greater than the thickness of the second light shielding portion 152.
  • the light shielding layer 15 is formed between the light guide plate 13 and the light homogenizing element 14 and is formed on the upper surface of the light guide plate 13 , and a light-shielding substrate having a uniform thickness is formed on the upper surface of the light guide plate 13 . Then, the mask is placed on the light-shielding substrate so that the corresponding area of the light source 13 is blocked by the mask, and the area corresponding to the interval between the light sources 13 is exposed through the opening of the mask, and the exposed area of the light-shielding layer 15 is lighted.
  • the second light-shielding portion 152 having a small thickness is formed in the exposed region, and the first light-shielding portion 151 having a large thickness is formed in the region blocked by the mask.
  • the degree of photolithography of the first light-shielding portion 151 is formed.
  • the degree of photolithography of the second light blocking portion 151 is greater than zero.
  • the light shielding layer 15 is still formed between the light guide plate 13 and the light homogenizing element 14 and is formed on the upper surface of the light guide plate 13.
  • a light-shielding substrate having a uniform thickness is formed on the upper surface of the light guide plate 13.
  • the semi-transparent mask comprising a plurality of first regions and a plurality of second regions, wherein the first region has a light transmission degree smaller than that of the second region, the first The area corresponds to the position of the light source 13 , and the second area corresponds to the position corresponding to the interval area between the adjacent light sources, and the light of the same parameter is used to illuminate the semi-transparent mask plate, so that the light-shielding substrate area covered by the first area A first light shielding portion 151 having a large thickness is formed, and a light shielding substrate region covered by the second region forms a second light shielding portion 152 having a small thickness.
  • the light intensity of the first light-shielding portion 151 formed by photolithography is smaller than the light intensity of the second light-shielding portion 152 by photolithography, and different degrees of photolithography are realized.
  • different degrees of lithography may be achieved by different durations of photolithography.
  • the lithography duration of photolithography forming the first opaque portion 151 is less than the lithography duration of lithography forming the second opaque portion 152. Achieve varying degrees of lithography.
  • first light blocking portion 151 and the second light blocking portion 152 may also be formed by an etching process, and the first light blocking portion 151 is etched to a lesser degree than the second light blocking portion 152.
  • different etching degrees can be achieved by different etching parameters such as etching time and concentration of the etching solution.
  • the etching time of the first light shielding portion 151 is smaller than the etching time of the second light shielding portion 152 and/or etching the first light shielding portion.
  • the concentration of the etching solution of 151 is smaller than the concentration of the etching solution that etches the second light shielding portion 152, so that the thickness of the formed first light shielding portion 151 is greater than the thickness of the second light shielding portion 152.
  • the thickness of the first light-shielding portion 151 is greater than the thickness of the second light-shielding portion 152, which is not limited by the embodiment of the present application.
  • FIG. 4 is a schematic diagram of the shading principle of the backlight module of the backlight unit shown in FIG. 2
  • FIG. 5 is a schematic diagram of the shading principle of the backlight module of the backlight unit shown in FIG. 3 .
  • the light S1 is originally a light that is directly leaked from the light source 21 through the reserved gap a, and can be blocked by the light shielding layer 15 (specifically, the first light blocking portion 151 at the position) without directly emitting the backlight module. Avoid direct injection into the human eye.
  • the light shielding layer 15 does not occupy a separate width space, and therefore, the width of the non-display area of the backlight module can be reduced, and light leakage can be prevented.
  • the light S2 is the light emitted by the light source 21 adjacent to the interval between the light sources 21.
  • the light S2 is weaker than the light S1, and the light S2 is directly emitted from the backlight module through the reserved gap a.
  • the light shielding layer 15 specifically, the second light blocking portion 152 is disposed at the position
  • the light shielding layer 15 is shielded from the backlight module, it does not directly enter the human eye.
  • the thickness of the first light blocking portion 151 is set larger than the thickness of the second light blocking portion 152.
  • the light shielding effect of the light shielding layer 15 in the corresponding region of the light source 21 can be made larger than the light shielding effect of the light shielding layer 15 in the region between the adjacent light sources 21, thereby avoiding the problem of uneven brightness.
  • FIG. 6 is a schematic structural diagram of a backlight module according to another embodiment of the present application.
  • the difference from the above embodiment is that the first light shielding portion 151 is gradually reduced in thickness in a direction away from the light guide plate 13, and the light intensity is stronger as the light source 21 is closer to the light source 21, so that the light guide plate 13 can be avoided by this arrangement.
  • the problem of uneven brightness in the length direction is that the first light shielding portion 151 is gradually reduced in thickness in a direction away from the light guide plate 13, and the light intensity is stronger as the light source 21 is closer to the light source 21, so that the light guide plate 13 can be avoided by this arrangement.
  • the problem of uneven brightness in the length direction is that the first light shielding portion 151 is gradually reduced in thickness in a direction away from the light guide plate 13, and the light intensity is stronger as the light source 21 is closer to the light source 21, so that the light guide plate 13 can be avoided by this arrangement. The problem of uneven brightness in the length direction.
  • the thickness of the first light blocking portion 151 is greater than the thickness of the second light blocking portion 152, specifically, the thickness of the first light blocking portion 151 is smaller than the thickness of the second light blocking portion 152.
  • FIG. 7 is a schematic exploded view of an electronic device according to an embodiment of the present application.
  • the electronic device 50 may be a smart phone.
  • the electronic device may also be a tablet computer, a palmtop computer, a smart watch, or the like.
  • the electronic device 20 may include a rear case 51, a middle frame 52, a display assembly 53, and a cover plate 54.
  • the middle frame 52 is fixedly coupled to the rear case 51.
  • the display assembly 53 is fixed to the middle frame 52.
  • the display component 53 includes a backlight module 531 and a display panel 532 for providing backlighting to the display panel 532.
  • the display panel 532 can be a liquid crystal display panel or other display panel.
  • the cover plate 54 is covered on the display assembly 53.
  • the cover 54 can be a clear glass cover, and the cover 54 can be opaque in the non-display area.
  • the cover 54 is coated with a light-shielding ink in the non-display area.
  • the electronic device 50 can also adopt other structures.
  • the description of the structure of the electronic device 50 does not limit the scope of the present application.
  • the backlight module includes: a light guide plate; a plurality of light sources are disposed on the side of the light guide plate and spaced apart in the width direction of the light guide plate; the light homogenizing element is disposed on the light guide plate; the flexible circuit board And partially disposed on the area where the light guide plate is not covered by the light homogenizing element, the flexible circuit board and the light homogenizing element have a reserved gap; the light shielding layer is disposed in the non-display area of the backlight module, and is used to block the light source The light shielding layer leaks out light, the light shielding layer includes a plurality of first light shielding portions and a plurality of second light shielding portions, the first light shielding portion is disposed in a region corresponding to the light source, and the second light shielding portion is disposed between the adjacent two light sources The area corresponding to the interval area, the thickness of the first light shielding portion is greater than the thickness of the second light shielding portion, and the backlight module may be prevented from

Abstract

一种电子装置（50）及其显示组件（53）、背光模组（531），背光模组（531）包括：导光板（13）；多个光源（21），均设置在导光板（13）侧边且在导光板（13）的宽度方向上间隔设置；匀光元件（14），设置在导光板（13）上；柔性电路板（16），部分设置在导光板（13）未被匀光元件（14）覆盖的区域上，柔性电路板（16）和匀光元件（14）之间具有预留间隙；遮光层（15），设置于背光模组（531）的非显示区域中，遮光层（15）包括多个第一和第二遮光部（151、152），第一遮光部（151）设置在光源（21）对应的区域，第二遮光部（152）设置在相邻两个光源（21）之间的间隔区域所对应的区域，第一遮光部（151）的厚度大于第二遮光部（152）的厚度。上述方式能够在减小背光模组（531）的非显示区域占用的宽度的情况下，避免背光模组（531）出现漏光和亮度不均的问题。

Description

电子装置及其显示组件、背光模组 【技术领域】
本发明涉及电子装置的背光技术领域，特别是涉及一种电子装置及其显示组件、背光模组。
【背景技术】
目前，随着科学技术的发展，智能手机等电子装置日渐成为人们生活的必需品。
背光模组是电子装置的重要部件，目前智能手机等便携式电子装置的背光模组通常采用侧入式背光模组，即光源发出的光从导光板侧边射入导光板，从而经导光板为电子装置的显示面板提供背光，然而由于这种侧入式背光模组的光源和一些相关的结构需要设置在导光板的侧边，因此，占用了较大的非显示区域，不利于窄边框和全面屏的实现，如何缩短背光模组在非显示区域的宽度而又不影响背光模组和显示面板的正常显示，成为人们关注的焦点问题。
【发明内容】
本申请实施例采用的一个技术方案是：提供一种背光模组，该背光模组包括：导光板；多个光源，均设置在导光板侧边且在导光板的宽度方向上间隔设置；匀光元件，设置在导光板上；柔性电路板，部分设置在导光板未被匀光元件覆盖的区域上，柔性电路板和匀光元件之间具有预留间隙；遮光层，设置于背光模组的非显示区域中，且用于遮挡光源发出的经预留间隙漏出的光线，遮光层包括多个第一遮光部和多个第二遮光部，第一遮光部设置在光源对应的区域，第二遮光部设置在相邻两个光源之间的间隔区域所对应的区域，第一遮光部的厚度大于第二遮光部的厚度。
本申请实施例采用的另一个技术方案是：提供一种显示组件，该显示组件包括显示面板和用于为显示面板提供背光的背光模组，背光模组上述的背光模组。
本申请实施例采用的又一个技术方案是：提供一种电子装置，该电子装置包括上述的显示组件。
【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。
图1是本申请实施例的导光板、遮光层、光源以导光板俯视视角的位置关系示意图；
图2是本申请实施例背光模组沿图1中A-A方向的剖视结构示意图；
图3是本申请实施例背光模组沿图1中B-B方向的剖视结构示意图；
图4是图2所示位置的背光模组遮光层遮光原理示意图；
图5是图3所示位置的背光模组遮光层遮光原理示意图；
图6是本申请另一种实施例背光模组的结构示意图；
图7是本申请实施例电子装置的分解结构示意图。
【具体实施方式】
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。可以理解的是，此处所描述的具体实施例仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。基于本申请中的实施例，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他实施例，都属于本申请保护的范围。
本申请中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
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。
本申请实施例一方面提供一种背光模组，所述背光模组包括：
导光板；
多个光源，均设置在所述导光板侧边且在所述导光板的宽度方向上间隔设置；
匀光元件，设置在所述导光板上；
柔性电路板，部分设置在所述导光板未被所述匀光元件覆盖的区域上，所述柔性电路板和所述匀光元件之间具有预留间隙；
遮光层，设置于所述背光模组的非显示区域中，且用于遮挡所述光源发出的经所述预留间隙漏出的光线，所述遮光层包括多个第一遮光部和多个第二遮光部，所述第一遮光部设置在所述光源对应的区域，所述第二遮光部设置在相邻两个所述光源之间的间隔区域所对应的区域，所述第一遮光部的厚度大于所述第二遮光部的厚度。
其中，所述导光板包括入光端部和导光板主体部，所述多个光源设置在所述入光端部背离所述导光板主体部的一侧，所述匀光元件设置于所述导光板主体部上。
其中，所述遮光层设置于所述匀光元件与所述导光板之间，且所述遮光层的覆盖区域对应于所述匀光元件或所述导光板靠近所述光源的一端的端部区域。
其中，所述匀光元件包括沿远离所述导光板方向依次设置的扩散膜、第一增光膜、第二增光膜，所述遮光层设置在所述扩散膜和所述第一增光膜之间或者所述遮光层设置在所述第一增光膜和第二增光膜之间。
其中，所述第一遮光部沿远离所述导光板的方向厚度逐渐减小。
其中，所述背光模组进一步包括设置在所述柔性电路板远离所述光源一面的遮光胶带，所述遮光胶带与所述匀光元件连接。
其中，所述背光模组进一步包括连接胶带，柔性电路板部分通过所述连接胶带在所述导光板未被所述匀光元件覆盖的区域上，所述第一遮光部的厚度小于所述连接胶带的厚度。
其中，所述遮光层由印刷或涂布工艺形成，形成所述第一遮光部的印刷或者涂布次数大于所述第二遮光部印刷或涂布次数。
其中，所述遮光层由光刻或者蚀刻工艺形成，形成所述第一遮光部的光刻或者蚀刻程度小于所述第二遮光部的光刻或者蚀刻程度。
本申请实施例另一方面提供一种显示组件，所述显示组件包括显示面板和用于为所述显示面板提供背光的背光模组；所述背光模组包括：
导光板；
多个光源，均设置在所述导光板侧边且在所述导光板的宽度方向上间隔设置；
匀光元件，设置在所述导光板上；
柔性电路板，部分设置在所述导光板未被所述匀光元件覆盖的区域上，所述柔性电路板和所述匀光元件之间具有预留间隙；
遮光层，设置于所述背光模组的非显示区域中，且用于遮挡所述光源发出的经所述预留间隙漏出的光线，所述遮光层包括多个第一遮光部和多个第二遮光部，所述第一遮光部设置在所述光源对应的区域，所述第二遮光部设置在相邻两个所述光源之间的间隔区域所对应的区域，所述第一遮光部的厚度大于所述第二遮光部的厚度。
其中，所述导光板包括入光端部和导光板主体部，所述多个光源设置在所述入光端部背离所述导光板主体部的一侧，所述匀光元件设置于所述导光板主体部上。
其中，所述遮光层设置于所述匀光元件与所述导光板之间，且所述遮光层的覆盖区域对应于所述匀光元件或所述导光板靠近所述光源的一端的端部区域。
其中，所述匀光元件包括沿远离所述导光板方向依次设置的扩散膜、第一增光膜、第二增光膜，所述遮光层设置在所述扩散膜和所述第一增光膜之间或者所述遮光层设置在所述第一增光膜和第二增光膜之间。
其中，所述第一遮光部沿远离所述导光板的方向厚度逐渐减小。
其中，所述背光模组进一步包括设置在所述柔性电路板远离所述光源一面的遮光胶带，所述遮光胶带与所述匀光元件连接。
其中，所述背光模组进一步包括连接胶带，柔性电路板部分通过所述连接胶带在所述导光板未被所述匀光元件覆盖的区域上，所述第一遮光部的厚度小于所述连接胶带的厚度。
其中，所述遮光层由印刷或涂布工艺形成，形成所述第一遮光部的印刷或者涂布次数大于所述第二遮光部印刷或涂布次数。
其中，所述遮光层由光刻或者蚀刻工艺形成，形成所述第一遮光部的光刻或者蚀刻程度小于所述第二遮光部的光刻或者蚀刻程度。
本申请实施例还提供一种电子装置，所述电子装置包括后壳、中框以及显示组件；所述中框与所述后壳固定连接，所述显示组件固定于中框；所述所述显示组件包括显示面板和用于为所述显示面板提供背光的背光模组；所述背光模组包括：
导光板；
多个光源，均设置在所述导光板侧边且在所述导光板的宽度方向上间隔设置；
匀光元件，设置在所述导光板上；
柔性电路板，部分设置在所述导光板未被所述匀光元件覆盖的区域上，所述柔性电路板和所述匀光元件之间具有预留间隙；
遮光层，设置于所述背光模组的非显示区域中，且用于遮挡所述光源发出的经所述预留间隙漏出的光线，所述遮光层包括多个第一遮光部和多个第二遮光部，所述第一遮光部设置在所述光源对应的区域，所述第二遮光部设置在相邻两个所述光源之间的间隔区域所对应的 区域，所述第一遮光部的厚度大于所述第二遮光部的厚度。
其中，所述电子装置还包括盖板，所述盖板盖设于显示组件上。
请一并参阅图1至图3，图1是本申请实施例的导光板、遮光层、光源以导光板俯视视角的位置关系示意图。图2是本申请实施例背光模组沿图1中A-A方向的剖视结构示意图；图3是本申请实施例背光模组沿图1中B-B方向的剖视结构示意图。
在本实施例中，背光模组包括背框11、反射片12、导光板13、匀光元件14、遮光层15、柔性电路板16、连接胶带17、遮光胶带18、第一胶框19、第二胶框20以及多个光源21。
背框11为一面开口的盒状结构，背框11包括底壁111和侧壁112，底壁111与侧壁112弯折连接，底壁111与侧壁112围成容置腔。背框11的材质可以为金属，例如，铁、铝等。
反射片12设置于背框11的底壁111上，且位于容置腔内部。
导光板13设置于反射片12上，且位于容置腔内部。
导光板13包括入光端部131和导光板主体部132，导光板13在靠近其入光侧的入光端部131厚度大于导光板主体部132的厚度。
可选地，该入光端部131从入光侧至远离入光侧的方向厚度逐渐减小，导光板主体部132厚度均匀，即处处厚度相等。
多个光源21设置于反射片12未被导光板13覆盖的区域上，且多个光源21均位于导光板13的侧边。光源21位于导光板13的入光侧。光源21可以LED灯。光源21设置在入光端部131背离导光板主体部132的一侧，例如，如图2所示，光源21位于导光板13的左侧。
如图1所示，导光板13从其正面观看可以为长方形，多个光源21沿导光板13的宽度方向间隔设置。
匀光元件14设置在导光板主体部132上，匀光元件14包括依次远离导光板设置的扩散膜141、第一增光膜142、第二增光膜143。可选地，扩散膜141、第一增光膜142、第二增光膜143彼此互为独立的膜层，或者，扩散膜141、第一增光膜142、第二增光膜143中至少两者设置为一体。
第一胶框19设置在背框11的底壁111上且与背框11的侧壁112贴靠设置。第一胶框19设置在光源21远离导光板13的一侧，例如，第一胶框19设置在光源21的左侧，第一胶框19和光源21之间留有混光散热空间。
柔性电路板16部分设置在导光板13未被匀光元件14覆盖的区域上，且柔性电路板16未设置在导光板13的部分设置在第一胶框19和光源21上方。
光源21与柔性电路板16未设置在导光板13上的部分的下表面固定，且光源21与柔性电路板16电连接。柔性电路板16上的线路连接光源21和外部供电引脚，以使外部供电引脚能够为光源21供电。
柔性电路板16通过连接胶带17与导光板13未被匀光元件14覆盖的区域粘接。连接胶带17可以为双面胶带。双面胶带的一面与柔性电路板17对应位置的下表面贴合，另一面与导光板13对应位置的上表面贴合。
柔性电路板16和连接胶带17靠近匀光元件14的端部与匀光元件14的靠近柔性电路板16的端部之间具有预留间隙a。该预留间隙a一方面用于匹配装配误差，另一方面，在一定程度的冷热变形情况下使背光模组仍能正常使用。
遮光胶带18设置在柔性电路板16上，且设置在匀光元件14的部分区域上。遮光胶带18可与匀光元件14上表面粘接，从而将匀光元件14固定。
可选地，遮光胶带18可以包括第一子遮光胶带部181和第二子遮光胶带部182，第一子遮光胶带部181覆盖于柔性电路板16上，第二子遮光胶带部182覆盖于匀光元件14的部分区域上。第一子遮光胶带部181的厚度可以大于第二子遮光胶带部182的厚度。
第二胶框20在遮光胶带18和柔性电路板16远离匀光元件14的一侧(例如，图2中所示的左侧)将遮光胶带18和柔性电路板16固定。
第一胶框19位于背框11的容置腔内，第二胶框20位于背框11的容置腔外。
遮光层15设置于背光模组的非显示区域中，且用于遮挡光源21发出的经预留间隙a漏出的光线，从而通过遮光层15遮挡由光源21经预留间隙a直射漏出的光线。其中，非显示区域是指遮光胶带18覆盖的区域，显示区域是指遮光胶带18未覆盖的区域。
可选地，在本实施例中，遮光层15设置于匀光元件14与导光板13之间，且遮光层15的覆盖区域对应于匀光元件14或导光板13靠近光源21的一端的端部区域，遮光层15可以设置在匀光元件14靠近所述导光板13的表面，或者设置在导光板13靠近匀光元件14的表面。
应理解，遮光层15可以设置在非显示区域中的任意位置，只要能够对光源21经预留间隙a直射漏出的光线进行遮挡即可。
例如，遮光层还可以设置于扩散膜141和第一增光膜142之间，具体而言，可以设置在扩散膜141靠近第一增光膜142的表面上，或者，设置在第一增光膜142靠近扩散膜141的表面上。遮光层的覆盖区域对应于扩散膜141或者第一增光膜142靠近光源21的一端的端部区域。
遮光层15的材质为遮光材料。例如遮光层15可以为黑色油墨层。
可选地，遮光层15可以通过印刷或者涂布工艺形成。印刷工艺可以为丝网印刷工艺。
如图1所示，遮光层15包括多个第一遮光部151和多个第二遮光部152，第一遮光部151设置在光源13对应的区域，第二遮光部152设置在相邻两个13光源之间的间隔区域所对应的区域。
形成第一遮光部151的印刷或者涂布次数大于第二遮光部152印刷或涂布次数，以使第一遮光部151的厚度大于第二遮光部152的厚度。例如，以遮光层15形成在导光板13和匀光元件14之间且形成于导光板13的上表面为例，第一遮光部151为在导光板13上表面通过两次印刷工艺形成，第二遮光部151为导光板13上表面通过一次印刷工艺形成。上述具体的次数可以为其他，本申请实施例对此不做限定。
可选地，第一遮光部151的厚度小于连接胶带17的厚度。
由于在光源12对应区域的遮光层15(第一遮光部151)的厚度大于相邻两个光源12之间的间隔区域对应的遮光层15(第二遮光部152)的厚度，可以避免因光源12所在区域光强较大而相邻两光源12之间的间隔区域光强相对较小导致的亮度不均匀的问题。
如图2和3所示，图2是在光源对应区域的剖视图，因此图2中的遮光层15具体是第一遮光部151，图3是在相邻两个光源之间的间隔区域的剖视图，因此图3中的遮光层15具体是第二遮光部152。
在另一种实施方式中，遮光层15可以通过光刻或者蚀刻工艺形成。
形成第一遮光部151的光刻或者蚀刻程度小于第二遮光部152光刻或者蚀刻程度，以使第一遮光部151的厚度大于第二遮光部152的厚度。
例如，在一种情形下，以遮光层15形成在导光板13和匀光元件14之间且形成于导光板 13的上表面为例，先在导光板13上表面形成厚度均匀的遮光基材，再将掩膜板放在遮光基材上使光源13对应区域被掩膜板遮挡，光源13之间的间隔区域对应的区域经过掩膜板的开口外露，对遮光层15外露的区域进行光刻，以在外露的区域形成厚度较小的第二遮光部152，在掩膜板遮挡的区域形成厚度较大的第一遮光部151，这种情况下，第一遮光部151的光刻程度为零，第二遮光部151的光刻程度大于零。
在另一种情形下，仍然以遮光层15形成在导光板13和匀光元件14之间且形成于导光板13的上表面为例，先在导光板13上表面形成厚度均匀的遮光基材，将半透掩膜板放在遮光基材上，半透掩膜板包括多个第一区域和多个第二区域，第一区域的透光程度小于第二区域的透光程度，第一区域对应于光源13所在位置，第二区域对应于相邻光源之间的间隔区域对应的位置，利用相同参数的光线照射在半透掩膜板上，从而使第一区域覆盖的遮光基材区域形成厚度较大的第一遮光部151，第二区域覆盖的遮光基材区域形成厚度较小的第二遮光部152。这种情况下，通过光刻形成第一遮光部151的光线强度小于光刻形成第二遮光部152的光线强度，实现不同程度的光刻。
在其他实施例中，还可以通过光刻的时长的不同实现不同的光刻程度，例如，光刻形成第一遮光部151的光刻时长小于光刻形成第二遮光部152的光刻时长，实现不同程度的光刻。
类似地，第一遮光部151和第二遮光部152也可以通过蚀刻工艺形成，第一遮光部151的蚀刻程度小于第二遮光部152的蚀刻程度。具体可以通过蚀刻的时间，蚀刻溶液的浓度等蚀刻参数的不同来实现不同的蚀刻程度，例如，第一遮光部151的蚀刻时长小于第二遮光部152的蚀刻时长和/或蚀刻第一遮光部151的蚀刻溶液的浓度小于蚀刻第二遮光部152的蚀刻溶液的浓度，从而使得形成的第一遮光部151的厚度大于第二遮光部152的厚度。
在其他实施例中，也可以通过其他方式使得形成的第一遮光部151的厚度大于第二遮光部152的厚度，本申请实施例对此不做限定。
请参阅图4和图5，图4是图2所示位置的背光模组遮光层遮光原理示意图，图5是图3所示位置的背光模组遮光层遮光原理示意图。
如图4所示，光线S1原本是从光源21经过预留间隙a直射漏出的光线，可由遮光层15(具体在该位置是第一遮光部151)遮挡而不会直射出背光模组，可避免直射入人眼。遮光层15没有占用单独的宽度空间，因此，可以减小背光模组非显示区域的宽度，又可以防止漏光。
类似地，如图5所示，光线S2是光源21之间的间隔区域邻近的光源21发出的光线，光线S2强度弱于光线S1，光线S2原本会经预留间隙a直射出背光模组，但由于设置遮光层15(具体在该位置是第二遮光部152)遮挡而不会射出背光模组，不会直射入人眼。
进一步，由于光源21对应区域的光线S1的强度大于相邻光源21之间的间隔区域对应区域的光线S2的强度，而通过将第一遮光部151的厚度设置成大于第二遮光部152的厚度，可以使得遮光层15在光源21对应区域的遮光效果大于遮光层15在相邻光源21之间区域的遮光效果，进而可以避免亮度不均匀的问题。
请参阅图6，图6是本申请另一种实施例背光模组的结构示意图。与上述实施例不同之处在于，第一遮光部151沿远离导光板13的方向厚度逐渐减小，由于越靠近光源21光线强度越强，因此，通过这种设置方式，可以避免在导光板13长度方向上的亮度不均匀问题。
在这种情况下，第一遮光部151的厚度大于第二遮光部152具体是指第一遮光部151的厚度最小处的厚度大于，第二遮光部152的厚度。
请参阅图7，图7是本申请实施例电子装置的分解结构示意图。在本实施例中，电子装置50可以为智能手机，在其他实施例中，电子装置也可以为平板电脑、掌上电脑、智能手表等。
在本实施例中，电子装置20可以包括包括后壳51、中框52、显示组件53以及盖板54。
中框52与后壳51固定连接。
显示组件53固定于中框52。
显示组件53包括背光模组531和显示面板532，背光模组53用于为显示面板532提供背光。
显示面板532可以为液晶显示面板或者其他的显示面板。
盖板54盖设于显示组件53上。盖板54可以为透明玻璃盖板，在非显示区域，盖板54可以为不透明。例如，盖板54在非显示区域涂有遮光油墨。
应理解，在后壳51和中框52之间可以设置有电子装置50的其他结构，例如，电路板等，由于本申请不涉及对这些部件的改进，因此此处不做具体说明。
在其他实施例中，电子装置50还可以采用其他的结构，上述电子装置50的结构的说明并非限定本申请的保护范围。
本申请实施例通过设置该背光模组包括：导光板；多个光源，均设置在导光板侧边且在导光板的宽度方向上间隔设置；匀光元件，设置在导光板上；柔性电路板，部分设置在导光板未被匀光元件覆盖的区域上，柔性电路板和匀光元件之间具有预留间隙；遮光层，设置于背光模组的非显示区域中，且用于遮挡光源发出的经预留间隙漏出的光线，遮光层包括多个第一遮光部和多个第二遮光部，第一遮光部设置在光源对应的区域，第二遮光部设置在相邻两个光源之间的间隔区域所对应的区域，第一遮光部的厚度大于第二遮光部的厚度，可以在减小背光模组的非显示区域占用的宽度的情况下，避免背光模组出现漏光，进一步，由于在光源对应位置遮光层的厚度大于未设置光源的间隔区域的遮光层厚度，可以避免亮度不均匀的问题。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，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，其特征在于，所述背光模组包括：
    导光板；
    多个光源，均设置在所述导光板侧边且在所述导光板的宽度方向上间隔设置；
    匀光元件，设置在所述导光板上；
    柔性电路板，部分设置在所述导光板未被所述匀光元件覆盖的区域上，所述柔性电路板和所述匀光元件之间具有预留间隙；
    遮光层，设置于所述背光模组的非显示区域中，且用于遮挡所述光源发出的经所述预留间隙漏出的光线，所述遮光层包括多个第一遮光部和多个第二遮光部，所述第一遮光部设置在所述光源对应的区域，所述第二遮光部设置在相邻两个所述光源之间的间隔区域所对应的区域，所述第一遮光部的厚度大于所述第二遮光部的厚度。
  2. 根据权利要求1所述的背光模组，其特征在于，所述导光板包括入光端部和导光板主体部，所述多个光源设置在所述入光端部背离所述导光板主体部的一侧，所述匀光元件设置于所述导光板主体部上。
  3. 根据权利要求1所述的背光模组，其特征在于，所述遮光层设置于所述匀光元件与所述导光板之间，且所述遮光层的覆盖区域对应于所述匀光元件或所述导光板靠近所述光源的一端的端部区域。
  4. 根据权利要求1所述的背光模组，其特征在于，所述匀光元件包括沿远离所述导光板方向依次设置的扩散膜、第一增光膜、第二增光膜，所述遮光层设置在所述扩散膜和所述第一增光膜之间或者所述遮光层设置在所述第一增光膜和第二增光膜之间。
  5. 根据权利要求1所述的背光模组，其特征在于，所述第一遮光部沿远离所述导光板的方向厚度逐渐减小。
  6. 根据权利要求1所述的背光模组，其特征在于，所述背光模组进一步包括设置在所述柔性电路板远离所述光源一面的遮光胶带，所述遮光胶带与所述匀光元件连接。
  7. 根据权利要求1所述的背光模组，其特征在于，所述背光模组进一步包括连接胶带，柔性电路板部分通过所述连接胶带在所述导光板未被所述匀光元件覆盖的区域上，所述第一遮光部的厚度小于所述连接胶带的厚度。
  8. 根据权利要求1所述的背光模组，其特征在于，所述遮光层由印刷或涂布工艺形成，形成所述第一遮光部的印刷或者涂布次数大于所述第二遮光部印刷或涂布次数。
  9. 根据权利要求1所述的背光模组，其特征在于，所述遮光层由光刻或者蚀刻工艺形成，形成所述第一遮光部的光刻或者蚀刻程度小于所述第二遮光部的光刻或者蚀刻程度。
  10. 一种显示组件，其特征在于，所述显示组件包括显示面板和用于为所述显示面板提供背光的背光模组；所述背光模组包括：
    导光板；
    多个光源，均设置在所述导光板侧边且在所述导光板的宽度方向上间隔设置；
    匀光元件，设置在所述导光板上；
    柔性电路板，部分设置在所述导光板未被所述匀光元件覆盖的区域上，所述柔性电路板和所述匀光元件之间具有预留间隙；
    遮光层，设置于所述背光模组的非显示区域中，且用于遮挡所述光源发出的经所述预留 间隙漏出的光线，所述遮光层包括多个第一遮光部和多个第二遮光部，所述第一遮光部设置在所述光源对应的区域，所述第二遮光部设置在相邻两个所述光源之间的间隔区域所对应的区域，所述第一遮光部的厚度大于所述第二遮光部的厚度。
  11. 根据权利要求10所述的显示组件，其特征在于，所述导光板包括入光端部和导光板主体部，所述多个光源设置在所述入光端部背离所述导光板主体部的一侧，所述匀光元件设置于所述导光板主体部上。
  12. 根据权利要求10所述的显示组件，其特征在于，所述遮光层设置于所述匀光元件与所述导光板之间，且所述遮光层的覆盖区域对应于所述匀光元件或所述导光板靠近所述光源的一端的端部区域。
  13. 根据权利要求10所述的显示组件，其特征在于，所述匀光元件包括沿远离所述导光板方向依次设置的扩散膜、第一增光膜、第二增光膜，所述遮光层设置在所述扩散膜和所述第一增光膜之间或者所述遮光层设置在所述第一增光膜和第二增光膜之间。
  14. 根据权利要求10所述的显示组件，其特征在于，所述第一遮光部沿远离所述导光板的方向厚度逐渐减小。
  15. 根据权利要求10所述的显示组件，其特征在于，所述背光模组进一步包括设置在所述柔性电路板远离所述光源一面的遮光胶带，所述遮光胶带与所述匀光元件连接。
  16. 根据权利要求10所述的显示组件，其特征在于，所述背光模组进一步包括连接胶带，柔性电路板部分通过所述连接胶带在所述导光板未被所述匀光元件覆盖的区域上，所述第一遮光部的厚度小于所述连接胶带的厚度。
  17. 根据权利要求10所述的显示组件，其特征在于，所述遮光层由印刷或涂布工艺形成，形成所述第一遮光部的印刷或者涂布次数大于所述第二遮光部印刷或涂布次数。
  18. 根据权利要求10所述的显示组件，其特征在于，所述遮光层由光刻或者蚀刻工艺形成，形成所述第一遮光部的光刻或者蚀刻程度小于所述第二遮光部的光刻或者蚀刻程度。
  19. 一种电子装置，其特征在于，所述电子装置包括后壳、中框以及显示组件；所述中框与所述后壳固定连接，所述显示组件固定于中框；所述所述显示组件包括显示面板和用于为所述显示面板提供背光的背光模组；所述背光模组包括：
    导光板；
    多个光源，均设置在所述导光板侧边且在所述导光板的宽度方向上间隔设置；
    匀光元件，设置在所述导光板上；
    柔性电路板，部分设置在所述导光板未被所述匀光元件覆盖的区域上，所述柔性电路板和所述匀光元件之间具有预留间隙；
    遮光层，设置于所述背光模组的非显示区域中，且用于遮挡所述光源发出的经所述预留间隙漏出的光线，所述遮光层包括多个第一遮光部和多个第二遮光部，所述第一遮光部设置在所述光源对应的区域，所述第二遮光部设置在相邻两个所述光源之间的间隔区域所对应的区域，所述第一遮光部的厚度大于所述第二遮光部的厚度。
  20. 根据权利要求19所述的电子装置，其特征在于，所述电子装置还包括盖板，所述盖板盖设于显示组件上。
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