WO2016183909A1 - 背光模组及液晶显示装置 - Google Patents

背光模组及液晶显示装置 Download PDF

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Publication number
WO2016183909A1
WO2016183909A1 PCT/CN2015/083244 CN2015083244W WO2016183909A1 WO 2016183909 A1 WO2016183909 A1 WO 2016183909A1 CN 2015083244 W CN2015083244 W CN 2015083244W WO 2016183909 A1 WO2016183909 A1 WO 2016183909A1
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WO
WIPO (PCT)
Prior art keywords
light
light guide
guide plate
backlight module
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/083244
Other languages
English (en)
French (fr)
Inventor
樊勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/778,588 priority Critical patent/US20170090107A1/en
Publication of WO2016183909A1 publication Critical patent/WO2016183909A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0078—Side-by-side arrangements, e.g. for large area displays
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface 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
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—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
    • G02B6/009—Positioning aspects of the light source 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means

Definitions

  • the present invention relates to the field of flat display, and in particular to a backlight module and a liquid crystal display device.
  • the liquid crystal display device generally includes a backlight module and a display panel, and the backlight module is configured to provide a light source for the display panel.
  • the backlight module is a side-input type, and the backlight module includes a light guide plate and a light source disposed on one side or a plurality of sides of the light guide plate, and the light emitted from the light source passes through the light guide plate. A diffusion effect is emitted from the light exit surface of the light guide plate to provide light to the display panel.
  • the intensity of the light emitted from the light exiting surface on the side adjacent to the light source is strong, and the light emitted from the light exiting surface on the side far from the light source is weak.
  • the brightness of the light exiting from the light exiting surface of the lighter portion and the light emitting surface of the weaker light portion is larger, and even the light emitted from the light emitting surface of the weaker light portion is brighter. Can not meet the normal display needs.
  • the backlight module includes a substrate, at least two light guide plates, a light source, and a diffusion plate.
  • the light guide plate is disposed on the same surface of the substrate, and the light guide plate and the light guide plate are Forming an inclination angle between the substrates, the light guide plate includes a first side surface, a second side surface, a light emitting surface, and a bottom surface, wherein the first side surface is opposite to the second side surface, and the light emitting surface is opposite to the bottom surface, and The light emitting surface and the bottom surface respectively intersect the first side surface and the second side surface, the first side surface is disposed adjacent to the light source to serve as a light incident surface of the light guide plate, and the diffusion plate is adjacent to the light guide plate The light emitting surface of the light plate is disposed, and the diffusion plate and the light guide plate are located closest to the diffusion plate Set a preset distance between them.
  • the backlight module further includes a reflective sheet disposed adjacent to the bottom surface and the second side of the light guide plate.
  • the backlight module further includes a light source supporting portion for supporting the light source, and the light source supporting portion is disposed in a receiving space formed by the light guiding plate and the substrate.
  • the backlight module further includes a support member disposed between the light emitting surface of the light guide plate and the diffusion plate, and the support member is configured to support the diffusion plate.
  • the backlight module further includes a fixing member, and the fixing plate is provided with a fixing hole, and the fixing member and the fixing hole cooperate to fix the light guiding plate on the substrate.
  • the backlight module further includes at least one optical film disposed adjacent to a surface of the diffusion plate away from the light guide plate.
  • the preset distance ranges from 5 mm to 20 mm.
  • the light-emitting surface of the light guide plate is provided with a microstructure for diffusing light emitted from the light-emitting surface of the light guide plate.
  • the present invention also provides a liquid crystal display device comprising the backlight module provided by any of the foregoing.
  • the backlight module of the present invention and the liquid crystal display device including the backlight module include at least two light guide plates in the backlight module, and the light guide plate is disposed on the substrate On the same surface, an angle of inclination is formed between each of the light guide plates and the substrate, and the light source is disposed adjacent to the first side of the light guide plate. Therefore, only a plurality of light guide plates and a plurality of light sources corresponding to the light guide plates are disposed, and the backlight module is The size can be made large enough to meet the needs of large sizes, and the light emitted from the backlight module is relatively uniform.
  • the liquid crystal display device has a high display quality.
  • FIG. 1 is a schematic structural view of a backlight module according to a preferred embodiment of the present invention.
  • FIG. 2 is a top plan view of a backlight module according to a preferred embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a liquid crystal display device according to a preferred embodiment of the present invention.
  • FIG. 1 is a schematic structural view of a backlight module according to a preferred embodiment of the present invention
  • FIG. 2 is a top view of a backlight module according to a preferred embodiment of the present invention.
  • the backlight module 10 includes a substrate 110 , at least two light guide plates 120 , a light source 130 , and a diffusion plate 140 .
  • the light guide plate 120 is disposed on the same surface of the substrate 110, and the light guide plate 120 forms an inclination angle a with the substrate 110.
  • the light guide plate 120 includes a first side surface 121, a second side surface 122, and light output. Face 123 and bottom surface 124.
  • the first side surface 121 and the second side surface 122 are opposite to each other, and the light emitting surface 123 is opposite to the bottom surface 124, and the light emitting surface 123 and the bottom surface 124 are respectively opposite to the first side surface 121 and the The second side 122 intersects. That is, the light-emitting surface 123 intersects the first side surface 121 and the second side surface 122, respectively, and the bottom surface 124 intersects the first side surface 121 and the second side surface 122, respectively.
  • the first side surface 121 is disposed adjacent to the light source 130 to serve as a light incident surface of the light guide plate 120 .
  • the diffusion plate 140 is disposed adjacent to the light-emitting surface 123 of the light guide plate 120, and the diffusion plate 140 is disposed at a predetermined distance from a portion of the light guide plate 120 that is adjacent to the diffusion plate 140.
  • the predetermined distance between the diffuser plate 140 and the portion of the light guide plate 120 adjacent to the diffuser plate 140 the light emitted from the light exit surface 123 of the light guide plate 120 can be mixed. It is more uniform and avoids uneven brightness between different light guide plates 120, thereby providing a more uniform surface light source for the liquid crystal display panel.
  • the preset distance ranges from 5 mm to 20 mm.
  • the light guide plate 120 may be a generally printed light guide plate.
  • the light exit surface 123 of the light guide plate 120 is provided with a microstructure, and the microstructure is used for diffusing the light from the light guide plate 120.
  • the light emitted from the smooth surface 123 is such that the light emitted from the light exit surface 123 of the light guide plate 120 is more uniform.
  • the adjacent light guide plates 120 have a overlapping range of a predetermined distance such that there is no edge dark area between the adjacent light guide plates 120.
  • the light source 130 is disposed adjacent to an end of the light guide plate 120 that is far from the diffusion plate 140.
  • the light source 130 includes a light emitting diode or a quantum dot fluorescent tube.
  • the quantum dot fluorescent tube may be composed of a blue light emitting diode and a glass encapsulating a quantum dot phosphor.
  • the backlight module 10 further includes a reflective sheet 180 disposed adjacent to the bottom surface 124 and the second side surface 122 of the light guide plate 120. After the light emitted from the light source 130 enters the light guide plate 120, the light is emitted from the second side surface 122, the light exit surface 123, and the bottom surface 124 of the light guide plate 120. The light emitted from the second side surface 122 of the light guide plate 120 and the light exit surface 123 causes the intensity of the light emitted from the light exit surface 123 to be weak. Therefore, the reflective sheet 180 is disposed on the second side surface 122 and the bottom surface 124 of the light guide plate 120 to reflect light emitted from the bottom surface 124 and the second side surface 122 back to the light guide plate 120.
  • the intensity of the light emitted by the reflected light passing through the light exit surface 123 of the light guide plate 120 is enhanced.
  • the reflective sheet 180 when the reflective sheet 180 is disposed adjacent to the bottom surface 124 and the second side surface 122 of the light guide plate 120, the reflective sheet 180 covers the bottom surface 124 of the light guide plate 120 and the bottom surface 124 is in contact with each other to prevent light loss caused when light in the light guide plate 120 is emitted from the bottom surface 124 and then reflected by the reflection sheet 180 into the light guide plate 120 after passing through a gap; the reflection sheet 180 covering the second side surface 122 of the light guide plate 120 and contacting the second side surface 122 to prevent the light in the light guide plate 120 from exiting the second side surface 122 and then passing through a gap The light loss caused when the reflective sheet 180 is reflected into the light guide plate 120.
  • the reflective sheet 180 may be disposed only adjacent to the bottom surface 124 of the light guide plate 120.
  • the reflective sheet 180 covers the bottom surface 124 of the light guide plate 120. And contacting the bottom surface 124 to avoid the light loss caused when the light in the light guide plate 120 is emitted from the bottom surface 124 and then reflected by the reflective sheet 180 into the light guide plate 120 after passing through a gap.
  • the reflective sheet 180 may also be disposed adjacent to the second side 122 of the light guide plate 120.
  • the reflective sheet 180 covers the second side of the light guide plate 120. And contacting the second side surface 122 to prevent the light in the light guide plate 120 from exiting the second side surface 122 and then passing through a gap before being reversed. The light loss caused when the film 180 is reflected into the light guide plate 120.
  • the backlight module 10 further includes a light source supporting portion 190 for supporting the light source 130.
  • the light source supporting portion 190 is disposed in a receiving space formed by the light guide plate 120 and the substrate 110. .
  • the light source supporting portion 190 is in contact with the substrate 110 such that the substrate 110 supports the light source supporting portion 190, and the light source supporting portion 190 has an angle with the light guide plate 120, thereby An angle is formed between the light source 130 and the light guide plate 120. Light emitted from the light source 130 can be better reflected from the reflection sheet 180 adjacent to the bottom surface 124 to be emitted from the light exit surface 123.
  • the back module 10 further includes a support member 160.
  • the support member 160 is disposed between the light emitting surface 123 of the light guide plate 120 and the diffusion plate 140.
  • the support member 160 is configured to support the diffusion. Board 140.
  • the support member 160 is transparent to reduce light loss of light emitted from the light exit surface 123 of the light guide plate 120.
  • the backlight module 10 further includes a fixing member 170.
  • the light guiding plate 120 is provided with a fixing hole 120a.
  • the fixing member 170 cooperates with the fixing hole 120a to fix the light guiding plate 120 to the substrate. 110 on.
  • the fixing member 170 may be a screw
  • the fixing hole 120a is a screw hole.
  • the fixing member 170 and the fixing hole 120a are not limited to being a screw and a screw hole, as long as the fixing member 170 and the fixing hole 120a cooperate to fix the light pipe 120 to the substrate 110. Just go up.
  • the light guide plate 120 is fixed by the fixing member 170 and the fixing hole 120, so that the looseness of the light guide plate 120 can be avoided, thereby improving the light coupling efficiency between the light source 130 and the light guide plate 120.
  • the backlight module 10 further includes at least one optical film 150 disposed adjacent to the surface of the diffusion plate 140 adjacent to the light guide plate 120.
  • the optical module 150 can be, but is not limited to, a brightness enhancement film that is used to homogenize light exiting the diffuser panel 140.
  • the backlight module 10 of the present invention includes at least two light guide plates 120, and the light guide plate 120 is disposed on the same surface of the substrate 110, between each of the light guide plates 120 and the substrate 110.
  • the light source 130 is disposed adjacent to the first side surface 121 of the light guide plate 120. Therefore, only a plurality of light guide plates 120 and a plurality of light sources 130 corresponding to the light guide plate 120 need to be disposed, and the size of the backlight module 10 can be made. Large enough to meet the needs of large size, and from the backlight module 10 The light emitted is relatively uniform.
  • a predetermined distance is further disposed between the diffusing plate 140 and a portion of the light guide plate 120 adjacent to the diffusing plate 140, so that light rays emitted from the light emitting surface 124 of the adjacent light guiding plate 120 are mixed. The ground is more even.
  • FIG. 3 is a schematic structural diagram of a liquid crystal display device according to a preferred embodiment of the present invention.
  • the liquid crystal display device 1 includes a backlight module 10 and a liquid crystal display panel 30.
  • the backlight module 10 and the liquid crystal display panel 30 are stacked, and the backlight module 10 is used to provide a surface for the liquid crystal display panel 30. light source.
  • the backlight module 10 includes a substrate 110 , at least two light guide plates 120 , a light source 130 , and a diffusion plate 140 .
  • the light guide plate 120 is disposed on the same surface of the substrate 110, and the light guide plate 120 forms an inclination angle a with the substrate 110.
  • the light guide plate 120 includes a first side surface 121, a second side surface 122, and light output. Face 123 and bottom surface 124.
  • the first side surface 121 and the second side surface 122 are opposite to each other, and the light emitting surface 123 is opposite to the bottom surface 124, and the light emitting surface 123 and the bottom surface 124 are respectively opposite to the first side surface 121 and the The second side 122 intersects.
  • the light-emitting surface 123 intersects the first side surface 121 and the second side surface 122, respectively, and the bottom surface 124 intersects the first side surface 121 and the second side surface 122, respectively.
  • the first side surface 121 is disposed adjacent to the light source 130 to serve as a light incident surface of the light guide plate 120 .
  • the diffusion plate 140 is disposed adjacent to the light-emitting surface 123 of the light guide plate 120, and the diffusion plate 140 is disposed at a predetermined distance from a portion of the light guide plate 120 that is adjacent to the diffusion plate 140.
  • the preset distance ranges from 5 mm to 20 mm.
  • the light guide plate 120 may be a generally printed light guide plate.
  • the light exit surface 123 of the light guide plate 120 is provided with a microstructure, and the microstructure is used for diffusing from the light exit surface of the light guide plate 120.
  • the light emitted from 123 is such that the light emitted from the light exit surface 123 of the light guide plate 120 is more uniform.
  • the adjacent light guide plates 120 have a overlapping range of a predetermined distance such that there is no edge dark area between the adjacent light guide plates 120.
  • the light source 130 is disposed adjacent to the light guide plate 120 from a distal end of the diffusion plate 140.
  • the light source 130 includes a light emitting diode or a quantum dot fluorescent tube.
  • Quantum dot The light tube can be composed of a blue light emitting diode and a glass encapsulating the quantum dot phosphor.
  • the backlight module 10 further includes a reflective sheet 180 disposed adjacent to the bottom surface 124 and the second side surface 122 of the light guide plate 120. After the light emitted from the light source 130 enters the light guide plate 120, the light is emitted from the second side surface 122, the light exit surface 123, and the bottom surface 124 of the light guide plate 120. The light emitted from the second side surface 122 of the light guide plate 120 and the light exit surface 123 causes the intensity of the light emitted from the light exit surface 123 to be weak. Therefore, the reflective sheet 180 is disposed on the second side surface 122 and the bottom surface 124 of the light guide plate 120 to reflect light emitted from the bottom surface 124 and the second side surface 122 back to the light guide plate 120.
  • the intensity of the light emitted by the reflected light passing through the light exit surface 123 of the light guide plate 120 is enhanced.
  • the reflective sheet 180 when the reflective sheet 180 is disposed adjacent to the bottom surface 124 and the second side surface 122 of the light guide plate 120, the reflective sheet 180 covers the bottom surface 124 of the light guide plate 120 and the bottom surface 124 is in contact with each other to prevent light loss caused when light in the light guide plate 120 is emitted from the bottom surface 124 and then reflected by the reflection sheet 180 into the light guide plate 120 after passing through a gap; the reflection sheet 180 covering the second side surface 122 of the light guide plate 120 and contacting the second side surface 122 to prevent the light in the light guide plate 120 from exiting the second side surface 122 and then passing through a gap The light loss caused when the reflective sheet 180 is reflected into the light guide plate 120.
  • the reflective sheet 180 may be disposed only adjacent to the bottom surface 124 of the light guide plate 120.
  • the reflective sheet 180 covers the bottom surface 124 of the light guide plate 120. And contacting the bottom surface 124 to avoid the light loss caused when the light in the light guide plate 120 is emitted from the bottom surface 124 and then reflected by the reflective sheet 180 into the light guide plate 120 after passing through a gap.
  • the reflective sheet 180 may also be disposed adjacent to the second side 122 of the light guide plate 120.
  • the reflective sheet 180 covers the second side of the light guide plate 120. And contacting the second side surface 122 to prevent the light in the light guide plate 120 from being reflected from the second side surface 122 and then being reflected by the reflective sheet 180 into the light guide plate 120 after passing through a gap. The light loss caused by the time.
  • the backlight module 10 further includes a light source supporting portion 190 for supporting the light source 130.
  • the light source supporting portion 190 is disposed in a receiving space formed by the light guide plate 120 and the substrate 110. .
  • the light source supporting portion 190 is in contact with the substrate 110 such that the substrate 110 supports the light source supporting portion 190, the light source supporting portion 190 and the light guide plate There is an angle between 120 so that an angle is formed between the light source 130 and the light guide plate 120. Light emitted from the light source 130 can be better reflected from the reflection sheet 180 adjacent to the bottom surface 124 to be emitted from the light exit surface 123.
  • the back module 10 further includes a support member 160.
  • the support member 160 is disposed between the light emitting surface 123 of the light guide plate 120 and the diffusion plate 140.
  • the support member 160 is configured to support the diffusion. Board 140.
  • the support member 160 is transparent to reduce light loss of light emitted from the light exit surface 123 of the light guide plate 120.
  • the backlight module 10 further includes a fixing member 170.
  • the light guiding plate 120 is provided with a fixing hole 120a.
  • the fixing member 170 cooperates with the fixing hole 120a to fix the light guiding plate 120 to the substrate. 110 on.
  • the fixing member 170 may be a screw
  • the fixing hole 120a is a screw hole.
  • the fixing member 170 and the fixing hole 120a are not limited to being a screw and a screw hole, as long as the fixing member 170 and the fixing hole 120a cooperate to fix the light pipe 120 to the substrate 110. Just go up.
  • the light guide plate 120 is fixed by the fixing member 170 and the fixing hole 120, so that the looseness of the light guide plate 120 can be avoided, thereby improving the light coupling efficiency between the light source 130 and the light guide plate 120.
  • the backlight module 10 further includes at least one optical film 150 disposed adjacent to the surface of the diffusion plate 140 adjacent to the light guide plate 120.
  • the optical module 150 can be, but is not limited to, a brightness enhancement film that is used to homogenize light exiting the diffuser panel 140.
  • the liquid crystal display panel 30 is disposed adjacent to a side of the light source film 150 away from the diffusion plate 140 to operate under the light provided by the backlight module 10.
  • the backlight module 10 of the liquid crystal display device 1 of the present invention includes at least two light guide plates 120, and the light guide plate 120 is disposed on the same surface of the substrate 110, and each light guide plate The light source 130 is disposed adjacent to the first side surface 121 of the light guide plate 120. Therefore, only a plurality of light guide plates 120 and a plurality of light sources 130 corresponding to the light guide plate 120 need to be disposed.
  • the backlight module 10 The size can be made large enough to meet the needs of a large size, and the light emitted from the backlight module 10 is relatively uniform.
  • a predetermined distance is further disposed between the diffusing plate 140 and a portion of the light guide plate 120 adjacent to the diffusing plate 140, so that light rays emitted from the light emitting surface 124 of the adjacent light guiding plate 120 are mixed. The ground is more even. Thereby making The liquid crystal display device 1 has a high display quality.

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

Abstract

一种背光模组和液晶显示装置，该背光模组（10）包括基板（110）、至少两个导光板（120）、光源（130）及扩散板（140）。导光板（120）设置在基板（110）的同一表面上，且导光板（120）与基板（110）之间形成倾角a，导光板（120）包括第一侧面（121）、第二侧面（122）、出光面（123）及底面（124）。第一侧面（121）与第二侧面（122）相对设置，出光面（123）与底面（124）相对设置，且出光面（123）以及底面（124）分别与第一侧面（121）及第二侧面（122）相交。即，出光面（123）分别与第一侧面（121）及第二侧面（122）相交，底面（124）分别与第一侧面（121）及第二侧面（122）相交。第一侧面（121）邻近光源（130）设置以作为导光板（120）的入光面。扩散板（140）邻近导光板（120）的出光面（123）设置，且扩散板（140）与导光板（120）邻近扩散板（140）距离最近的部位之间设置一预设距离。一种液晶显示装置包括背光模组（10）。

Description

背光模组及液晶显示装置
本发明要求2015年5月15日递交的发明名称为“背光模组及液晶显示装置”的申请号201510249342.1的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及平面显示领域，尤其涉及一种背光模组及液晶显示装置。
背景技术
液晶显示装置(Liquid Crystal Display,LCD)作为一种常见的显示装置，由于其具有功耗低、体积小、重量轻等特点，因此备受用户的青睐。液晶显示装置通常包括背光模组和显示面板，所述背光模组用于为所述显示面板提供光源。通常，所述背光模组为侧入光式，此种背光模组包括导光板以及设置在导光板的一个侧边或者是多个侧边的光源，自所述光源发出的光线经过导光板的扩散作用自所述导光板的出光面射出，以为所述显示面板提供光线。然而，邻近光源的一侧的出光面出射的光线的强度较强，远离光源一侧的出光面出射出来的光线强度较弱。随着液晶显示装置对显示面板大尺寸的发展需要，光线较强的部分的出光面与光线较弱部分的出光面出射的亮度差异较大，甚至光线较弱部分的出光面出射的光线的亮度不能满足正常的显示需要。
发明内容
本发明提供一种背光模组，所述背光模组包括基板、至少两个导光板、光源及扩散板，所述导光板设置在所述基板的同一表面上，且所述导光板与所述基板之间形成倾角，所述导光板包括第一侧面、第二侧面、出光面及底面，所述第一侧面与所述第二侧面相对设置，所述出光面与所述底面相对设置，且所述出光面以及所述底面分别与所述第一侧面及第二侧面相交，所述第一侧面邻近所述光源设置以作为所述导光板的入光面，所述扩散板邻近所述导光板的所述出光面设置且所述扩散板与所述导光板邻近所述扩散板距离最近的部位之 间设置一预设距离。
其中，所述背光模组还包括反射片，所述反射片邻近所述导光板的所述底面及所述第二侧面设置。
其中，所述背光模组还包括光源支撑部，所述光源支撑部用于支撑所述光源，所述光源支撑部设置在所述导光板与所述基板形成的收容空间内。
其中，所述背光模组还包括支撑件，所述支撑件设置于所述导光板的出光面与所述扩散板之间，所述支撑件用于支撑所述扩散板。
其中，所述背光模组还包括固定件，所述导光板上设置固定孔，所述固定件及所述固定孔配合以将所述导光板固定在所述基板上。
其中，所述背光模组还包括至少一片光学膜片，所述光学膜片邻近所述扩散板远离所述导光板的表面设置。
其中，所述预设距离的范围为5毫米～20毫米。
其中，所述导光板的出光面上设置有微结构，所述微结构用于扩散自所述导光板的出光面出射的光线。
本发明还提供了一种液晶显示装置，所述液晶显示装置包括前述任意一项提供的背光模组。
相较于现有技术，本发明的背光模组和包括所述背光模组的液晶显示装置，由于所述背光模组中包括至少两个导光板，且所述导光板设置在所述基板的同一表面上，每个导光板与基板之间形成倾角，光源邻近导光板的第一侧面设置，因此，只需要设置多个导光板及多个与导光板相应的光源，所述背光模组的尺寸就能够做得足够大，能够满足大尺寸的需求，且自所述背光模组出射的光线比较均匀。进一步地，所述扩散板与所述导光板邻近所述扩散板距离最近的部位之间还设置一预设距离，从而使得自相邻的导光板的出光面出射的光线混合地更加均匀。从而使得所述液晶显示装置具有较高的显示品质。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，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为本发明一较佳实施方式的背光模组的结构示意图。
图2为本发明一较佳实施方式的背光模组的俯视图。
图3为本发明一较佳实施方式的液晶显示装置的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请一并参阅图1及图2，图1为本发明一较佳实施方式的背光模组的结构示意图；图2为本发明一较佳实施方式的背光模组的俯视图。所述背光模组10包括基板110、至少两个导光板120、光源130及扩散板140。所述导光板120设置在所述基板110的同一表面上，且所述导光板120与所述基板110之间形成倾角a，所述导光板120包括第一侧面121、第二侧面122、出光面123及底面124。所述第一侧面121与所述第二侧面122相对设置，所述出光面123与所述底面124相对设置，且所述出光面123以及所述底面124分别与所述第一侧面121及所述第二侧面122相交。即，所述出光面123分别与所述第一侧面121及所述第二侧面122相交，所述底面124分别与所述第一侧面121及所述第二侧面122相交。所述第一侧面121邻近所述光源130设置以作为所述导光板120的入光面。所述扩散板140邻近所述导光板120的所述出光面123设置，且所述扩散板140与所述导光板120邻近所述扩散板140距离最近的部位之间设置一预设距离。通过在所述扩散板140与所述导光板120邻近所述扩散板140距离最近的部位之间设置所述预设距离，可以使得自所述导光板120的所述出光面123出射的光线混合得更加均匀，避免不同的导光板120之间的明暗不均匀，从而能够为液晶显示面板提供更加均匀的面光源。优选地，所述预设距离的范围为5毫米～20毫米。
所述导光板120可以为普通印刷的导光板，优选地，所述导光板120的所述出光面123上设置微结构，所述微结构用于扩散自所述导光板120的所述出 光面123出射的光线，以使得自所述导光板120的出光面123出射的光线更加均匀。优选地，相邻的导光板120之间有一预设距离的重叠范围，以使得相邻的导光板120之间不存在边缘暗区。
优选地，所述光源130邻近所述导光板120距离所述扩散板140较远的一端设置。所述光源130包括发光二极管或者量子点荧光灯管。所述量子点荧光灯管可以由蓝光发光二极管以及封装有量子点荧光粉的玻璃组成。
所述背光模组10还包括反射片180，所述反射片180邻近所述导光板120的所述底面124及所述第二侧面122设置。自所述光源130发出的光线进入到所述导光板120之后，会自所述导光板120的所述第二侧面122、所述出光面123及所述底面124出射。自所述导光板120的所述第二侧面122及所述出光面123出射的光线会使得自所述出光面123出射的光线的强度变弱。因此，在所述导光板120的所述第二侧面122及所述底面124设置所述反射片180可以将从所述底面124及所述第二侧面122出射的光线反射回所述导光板120，进而使得反射回的光线经过所述导光板120的所述出光面123出射的光线的强度增强。优选地，所述反射片180邻近所述导光板120的所述底面124及所述第二侧面122设置时，所述反射片180覆盖所述导光板120的所述底面124且与所述底面124相接触，以避免所述导光板120内的光线自所述底面124出射之后经过一段空隙之后再被所述反射片180反射至所述导光板120内时造成的光损；所述反射片180覆盖所述导光板120的所述第二侧面122且与所述第二侧面122相接触，以避免所述导光板120内的光线自所述第二侧面122出射之后经过一段空隙之后再被所述反射片180反射至所述导光板120内时造成的光损。可以理解地，在其他实施方式中，所述反射片180也可以仅邻近所述导光板120的所述底面124设置，优选地，所述反射片180覆盖所述导光板120的所述底面124且与所述底面124相接触，以避免所述导光板120内的光线自所述底面124出射之后经过一段空隙之后再被所述反射片180反射至所述导光板120内时造成的光损。在其他实施方式中，所述反射片180也可以仅邻近所述导光板120的所述第二侧面122设置，优选地，所述反射片180覆盖所述导光板120内的所述第二侧面122且与所述第二侧面122相接触，以避免所述导光板120内的光线自所述第二侧面122出射之后经过一段空隙之后再被所述反 射片180反射至所述导光板120内时造成的光损。
所述背光模组10还包括光源支撑部190，所述光源支撑部190用于支撑所述光源130，所述光源支撑部190设置在所述导光板120与所述基板110形成的收容空间内。优选地，所述光源支撑部190与所述基板110相接触，以使得所述基板110支撑所述光源支撑部190，所述光源支撑部190与所述导光板120之间具有夹角，从而使得所述光源130与所述导光板120之间形成夹角。自所述光源130发出的光线能够更好地经过邻近所述底面124的反射片180的反射，以自所述出光面123出射。
所述背面模组10还包括支撑件160，所述支撑件160设置于所述导光板120的所述出光面123与所述扩散板140之间，所述支撑件160用于支撑所述扩散板140。优选地，所述支撑件160为透明的，以减少自所述导光板120的所述出光面123出射的光线的光损。
所述背光模组10还包括固定件170，相应地，所述导光板120上设置固定孔120a，所述固定件170与所述固定孔120a配合以将所述导光板120固定在所述基板110上。在本实施方式中，所述固定件170可以为螺钉，相应地，所述固定孔120a为螺孔。可以理解地，所述固定件170及所述固定孔120a也并不仅限于为螺钉和螺孔，只要所述固定件170及所述固定孔120a配合将所述道光管120固定在所述基板110上即可。通过所述固定件170以及所述固定孔120将所述导光板120固定，可以避免所述导光板120的松动，进而提升了所述光源130与所述导光板120之间的光耦合效率。
所述背光模组10还包括至少一片光学膜片150，所述光学膜片150邻近所述扩散板140邻近所述导光板120的表面设置。所述光学模块150可以为但不仅限于为增亮膜，所述光学膜片150用于将自所述扩散板140出射的光线均匀化。
相较于现有技术，本发明的背光模组10中包括至少两个导光板120，且所述导光板120设置在所述基板110的同一表面上，每个导光板120与基板110之间形成倾角，光源130邻近导光板120的第一侧面121设置，因此，只需要设置多个导光板120及多个与导光板120相应的光源130，所述背光模组10的尺寸就能够做得足够大，能够满足大尺寸的需求，且自所述背光模组10 出射的光线比较均匀。进一步地，所述扩散板140与所述导光板120邻近所述扩散板140距离最近的部位之间还设置一预设距离，从而使得自相邻的导光板120的出光面124出射的光线混合地更加均匀。
下面结合图1及图2对本发明的液晶显示装置进行介绍，请一并参阅图3，图3为本发明一较佳实施方式的液晶显示装置的结构示意图。所述液晶显示装置1包括背光模组10和液晶显示面板30，所述背光模组10与所述液晶显示面板30层叠设置，所述背光模组10用于为所述液晶显示面板30提供面光源。
所述背光模组10包括基板110、至少两个导光板120、光源130及扩散板140。所述导光板120设置在所述基板110的同一表面上，且所述导光板120与所述基板110之间形成倾角a，所述导光板120包括第一侧面121、第二侧面122、出光面123及底面124。所述第一侧面121与所述第二侧面122相对设置，所述出光面123与所述底面124相对设置，且所述出光面123以及所述底面124分别与所述第一侧面121及所述第二侧面122相交。即，所述出光面123分别与所述第一侧面121及所述第二侧面122相交，所述底面124分别与所述第一侧面121及所述第二侧面122相交。所述第一侧面121邻近所述光源130设置以作为所述导光板120的入光面。所述扩散板140邻近所述导光板120的所述出光面123设置，且所述扩散板140与所述导光板120邻近所述扩散板140距离最近的部位之间设置一预设距离。通过在所述扩散板140与所述导光板120邻近所述扩散板140距离最近的部位之间设置所述预设距离，可以使得自所述导光板120的所述出光面123出射的光线混合得更加均匀，避免不同的导光板120之间的明暗不均匀，从而能够为液晶显示面板提供更加均匀的面光源。优选地，所述预设距离的范围为5毫米～20毫米。
所述导光板120可以为普通印刷的导光板，优选地，所述导光板120的所述出光面123上设置微结构，所述微结构用于扩散自所述导光板120的所述出光面123出射的光线，以使得自所述导光板120的出光面123出射的光线更加均匀。优选地，相邻的导光板120之间有一预设距离的重叠范围，以使得相邻的导光板120之间不存在边缘暗区。
优选地，所述光源130邻近所述导光板120距离所述扩散板140的较远的一端设置。所述光源130包括发光二极管或者量子点荧光灯管。所述量子点荧 光灯管可以由蓝光发光二极管以及封装有量子点荧光粉的玻璃组成。
所述背光模组10还包括反射片180，所述反射片180邻近所述导光板120的所述底面124及所述第二侧面122设置。自所述光源130发出的光线进入到所述导光板120之后，会自所述导光板120的所述第二侧面122、所述出光面123及所述底面124出射。自所述导光板120的所述第二侧面122及所述出光面123出射的光线会使得自所述出光面123出射的光线的强度变弱。因此，在所述导光板120的所述第二侧面122及所述底面124设置所述反射片180可以将从所述底面124及所述第二侧面122出射的光线反射回所述导光板120，进而使得反射回的光线经过所述导光板120的所述出光面123出射的光线的强度增强。优选地，所述反射片180邻近所述导光板120的所述底面124及所述第二侧面122设置时，所述反射片180覆盖所述导光板120的所述底面124且与所述底面124相接触，以避免所述导光板120内的光线自所述底面124出射之后经过一段空隙之后再被所述反射片180反射至所述导光板120内时造成的光损；所述反射片180覆盖所述导光板120的所述第二侧面122且与所述第二侧面122相接触，以避免所述导光板120内的光线自所述第二侧面122出射之后经过一段空隙之后再被所述反射片180反射至所述导光板120内时造成的光损。可以理解地，在其他实施方式中，所述反射片180也可以仅邻近所述导光板120的所述底面124设置，优选地，所述反射片180覆盖所述导光板120的所述底面124且与所述底面124相接触，以避免所述导光板120内的光线自所述底面124出射之后经过一段空隙之后再被所述反射片180反射至所述导光板120内时造成的光损。在其他实施方式中，所述反射片180也可以仅邻近所述导光板120的所述第二侧面122设置，优选地，所述反射片180覆盖所述导光板120内的所述第二侧面122且与所述第二侧面122相接触，以避免所述导光板120内的光线自所述第二侧面122出射之后经过一段空隙之后再被所述反射片180反射至所述导光板120内时造成的光损。
所述背光模组10还包括光源支撑部190，所述光源支撑部190用于支撑所述光源130，所述光源支撑部190设置在所述导光板120与所述基板110形成的收容空间内。优选地，所述光源支撑部190与所述基板110相接触，以使得所述基板110支撑所述光源支撑部190，所述光源支撑部190与所述导光板 120之间具有夹角，从而使得所述光源130与所述导光板120之间形成夹角。自所述光源130发出的光线能够更好地经过邻近所述底面124的反射片180的反射，以自所述出光面123出射。
所述背面模组10还包括支撑件160，所述支撑件160设置于所述导光板120的所述出光面123与所述扩散板140之间，所述支撑件160用于支撑所述扩散板140。优选地，所述支撑件160为透明的，以减少自所述导光板120的所述出光面123出射的光线的光损。
所述背光模组10还包括固定件170，相应地，所述导光板120上设置固定孔120a，所述固定件170与所述固定孔120a配合以将所述导光板120固定在所述基板110上。在本实施方式中，所述固定件170可以为螺钉，相应地，所述固定孔120a为螺孔。可以理解地，所述固定件170及所述固定孔120a也并不仅限于为螺钉和螺孔，只要所述固定件170及所述固定孔120a配合将所述道光管120固定在所述基板110上即可。通过所述固定件170以及所述固定孔120将所述导光板120固定，可以避免所述导光板120的松动，进而提升了所述光源130与所述导光板120之间的光耦合效率。
所述背光模组10还包括至少一片光学膜片150，所述光学膜片150邻近所述扩散板140邻近所述导光板120的表面设置。所述光学模块150可以为但不仅限于为增亮膜，所述光学膜片150用于将自所述扩散板140出射的光线均匀化。
所述液晶显示面板30邻近所述光源膜片150远离所述扩散板140的一侧设置，以在所述背光模组10提供的光线下进行工作。
相较于现有技术，本发明的液晶显示装置1中的背光模组10中包括至少两个导光板120，且所述导光板120设置在所述基板110的同一表面上，每个导光板120与基板110之间形成倾角，光源130邻近导光板120的第一侧面121设置，因此，只需要设置多个导光板120及多个与导光板120相应的光源130，所述背光模组10的尺寸就能够做得足够大，能够满足大尺寸的需求，且自所述背光模组10出射的光线比较均匀。进一步地，所述扩散板140与所述导光板120邻近所述扩散板140距离最近的部位之间还设置一预设距离，从而使得自相邻的导光板120的出光面124出射的光线混合地更加均匀。从而使得 所述液晶显示装置1具有较高的显示品质。
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (18)

  1. 一种背光模组，其中，所述背光模组包括基板、至少两个导光板、光源及扩散板，所述导光板设置在所述基板的同一表面上，且所述导光板与所述基板之间形成倾角，所述导光板包括第一侧面、第二侧面、出光面及底面，所述第一侧面与所述第二侧面相对设置，所述出光面与所述底面相对设置，且所述出光面以及所述底面分别与所述第一侧面及第二侧面相交，所述第一侧面邻近所述光源设置以作为所述导光板的入光面，所述扩散板邻近所述导光板的所述出光面设置且所述扩散板与所述导光板邻近所述扩散板距离最近的部位之间设置一预设距离。
  2. 如权利要求1所述的背光模组，所述背光模组还包括反射片，所述反射片邻近所述导光板的所述底面及所述第二侧面设置。
  3. 如权利要求1所述的背光模组，其中，所述背光模组还包括光源支撑部，所述光源支撑部用于支撑所述光源，所述光源支撑部设置在所述导光板与所述基板形成的收容空间内。
  4. 如权利要求1所述的背光模组，其中，所述背光模组还包括支撑件，所述支撑件设置于所述导光板的出光面与所述扩散板之间，所述支撑件用于支撑所述扩散板。
  5. 如权利要求1所述的背光模组，其中，所述背光模组还包括固定件，所述导光板上设置固定孔，所述固定件及所述固定孔配合以将所述导光板固定在所述基板上。
  6. 如权利要求1所述的背光模组，其中，所述背光模组还包括至少一片光学膜片，所述光学膜片邻近所述扩散板远离所述导光板的表面设置。
  7. 如权利要求1所述的背光模组，其中，所述预设距离的范围为5毫米～20毫米。
  8. 如权利要求1所述的背光模组，其中，所述导光板的出光面上设置有微结构，所述微结构用于扩散自所述导光板的出光面出射的光线。
  9. 如权利要求1所述的背光模组，其中，所述光源包括发光二极管或者量子点荧光灯管。
  10. 一种液晶显示装置，其中，所述液晶显示装置包括背光模组，所述背光模组包括基板、至少两个导光板、光源及扩散板，所述导光板设置在所述基板的同一表面上，且所述导光板与所述基板之间形成倾角，所述导光板包括第一侧面、第二侧面、出光面及底面，所述第一侧面与所述第二侧面相对设置，所述出光面与所述底面相对设置，且所述出光面以及所述底面分别与所述第一侧面及第二侧面相交，所述第一侧面邻近所述光源设置以作为所述导光板的入光面，所述扩散板邻近所述导光板的所述出光面设置且所述扩散板与所述导光板邻近所述扩散板距离最近的部位之间设置一预设距离。
  11. 如权利要求10所述的液晶显示装置，其中，所述背光模组还包括反射片，所述反射片邻近所述导光板的所述底面及所述第二侧面设置。
  12. 如权利要求10所述的液晶显示装置，其中，所述背光模组还包括光源支撑部，所述光源支撑部用于支撑所述光源，所述光源支撑部设置在所述导光板与所述基板形成的收容空间内。
  13. 如权利要求10所述的液晶显示装置，其中，所述背光模组还包括支撑件，所述支撑件设置于所述导光板的出光面与所述扩散板之间，所述支撑件用于支撑所述扩散板。
  14. 如权利要求10所述的液晶显示装置，其中，所述背光模组还包括固定件，所述导光板上设置固定孔，所述固定件及所述固定孔配合以将所述导光板固定在所述基板上。
  15. 如权利要求10所述的液晶显示装置，其中，所述背光模组还包括至少一片光学膜片，所述光学膜片邻近所述扩散板远离所述导光板的表面设置。
  16. 如权利要求10所述的液晶显示装置，其中，所述预设距离的范围为s5毫米～20毫米。
  17. 如权利要求10所述的液晶显示装置，其中，所述导光板的出光面上设置有微结构，所述微结构用于扩散自所述导光板的出光面出射的光线。
  18. 如权利要求10所述的液晶显示装置，其中所述光源包括发光二极管或者量子点荧光灯管。
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