WO2017166345A1 - 一种背光模组及液晶显示装置 - Google Patents

一种背光模组及液晶显示装置 Download PDF

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Publication number
WO2017166345A1
WO2017166345A1 PCT/CN2016/080037 CN2016080037W WO2017166345A1 WO 2017166345 A1 WO2017166345 A1 WO 2017166345A1 CN 2016080037 W CN2016080037 W CN 2016080037W WO 2017166345 A1 WO2017166345 A1 WO 2017166345A1
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WO
WIPO (PCT)
Prior art keywords
buffer block
middle frame
guide plate
light guide
backlight module
Prior art date
Application number
PCT/CN2016/080037
Other languages
English (en)
French (fr)
Inventor
李全
Original Assignee
深圳市华星光电技术有限公司
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 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US15/120,500 priority Critical patent/US10379287B2/en
Publication of WO2017166345A1 publication Critical patent/WO2017166345A1/zh

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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
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • 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
    • G02B6/0085—Means for removing heat created by the light source from 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
    • G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
    • 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
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • 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
    • G02F1/133628—Illuminating devices with cooling means
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G02F2201/503—Arrangements improving the resistance to shock

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight module and a liquid crystal display device.
  • LCD LCD Liquid Crystal
  • the principle of illumination is blue light-emitting diode (Light-Emitting) Diode, LED) excited yellow phosphor, its color gamut saturation value NTSC is about 60% ⁇ 80%, in order to enhance the NTSC value, the use of blue LED to stimulate nano-scale quantum dots, using quantum effects, can make NTSC reach 100 More than %, improve the display quality of the panel.
  • Quantum dots are usually packed into quantum strips to protect quantum dots.
  • the existing quantum strips (QDs) are relatively fixed, and the space for mounting positions is relatively narrow, which is inconvenient to replace, resulting in easy damage to the quantum strips.
  • An object of the present invention is to provide a backlight module and a liquid crystal display device, which solve the technical problem that the backlight module and the liquid crystal display device of the prior art are inconvenient to replace and easily damage the quantum strip.
  • the present invention constructs a backlight module, including:
  • a heat dissipating plate provided with a groove, wherein the groove is provided with a first buffer block;
  • the light guide plate between the heat dissipation plate and the middle frame, the light guide plate having a light incident side;
  • a light source disposed on a light incident side of the light guide plate
  • the middle frame is located on the light guide plate and the light source
  • a second buffer block is disposed on an inner surface of the sidewall of the back frame, and a spacing between the second buffer block and the quantum strip is smaller than a distance between the light source and the quantum strip; as well as
  • a reflective sheet disposed between the light guide plate and the heat dissipation plate.
  • a spacing between the second buffer block and the middle frame is smaller than a distance between the light source and the middle frame.
  • the second buffer block is bonded to the middle frame toward the end of the middle frame.
  • a third buffer block is disposed between the first side of the light guide plate and the second side of the middle frame, and between the third buffer block and the quantum strip
  • the pitch is smaller than a distance between the light guide plate and the quantum strip
  • the first side is a side facing the middle frame
  • the second side is a side facing the heat dissipation plate.
  • the first buffer block is bonded to the bottom of the recess.
  • the present invention constructs a backlight module, including:
  • a heat dissipating plate provided with a groove, wherein the groove is provided with a first buffer block;
  • the light guide plate between the heat dissipation plate and the middle frame, the light guide plate having a light incident side;
  • a light source disposed on a light incident side of the light guide plate
  • the middle frame is located on the light guide plate and the light source
  • a quantum strip is inserted into the recess, and one end of the quantum strip abuts the first buffer block.
  • the backlight module further includes a back frame, and a second buffer block is disposed on an inner surface of the sidewall of the back frame, and the second buffer block is between the quantum strip and the quantum strip The spacing is less than the spacing between the source and the quantum strip.
  • a spacing between the second buffer block and the middle frame is smaller than a distance between the light source and the middle frame.
  • the second buffer block is bonded to the middle frame toward the end of the middle frame.
  • a third buffer block is disposed between the first side of the light guide plate and the second side of the middle frame, and between the third buffer block and the quantum strip
  • the pitch is smaller than a distance between the light guide plate and the quantum strip
  • the first side is a side facing the middle frame
  • the second side is a side facing the heat dissipation plate.
  • the backlight module further includes a reflective sheet, and the reflective sheet is disposed between the light guide plate and the heat dissipation plate.
  • the first buffer block is bonded to the bottom of the recess.
  • the invention also provides a liquid crystal display device comprising:
  • a backlight module comprising:
  • a heat dissipating plate provided with a groove, wherein the groove is provided with a first buffer block;
  • the light guide plate between the heat dissipation plate and the middle frame, the light guide plate having a light incident side;
  • a light source disposed on a light incident side of the light guide plate
  • the middle frame is located on the light guide plate and the light source
  • a quantum strip is inserted into the recess, and one end of the quantum strip abuts the first buffer block.
  • the backlight module further includes a back frame, and a second buffer block is disposed on an inner surface of the sidewall of the back frame, and the second buffer block is interposed between the second buffer block and the quantum strip The spacing is less than the spacing between the source and the quantum strip.
  • a spacing between the second buffer block and the middle frame is smaller than a distance between the light source and the middle frame.
  • the second buffer block is bonded to the center frame toward the end of the middle frame.
  • a third buffer block is disposed between the first side of the light guide plate and the second side of the middle frame, and between the third buffer block and the quantum strip
  • the pitch is smaller than a distance between the light guide plate and the quantum strip
  • the first side is a side facing the middle frame
  • the second side is a side facing the heat dissipation plate.
  • the backlight module further includes a reflective sheet, and the reflective sheet is disposed between the light guide plate and the heat dissipation plate.
  • the first buffer block is bonded to the bottom of the groove.
  • the quantum strip is inserted into the groove having the buffer block, thereby facilitating replacement of the quantum strip. Prevent damage to the quantum bars.
  • FIG. 1 is a schematic structural view of a backlight module of the present invention
  • FIG. 2 is a schematic enlarged view of a quantum strip of the present invention.
  • FIG. 1 is a schematic structural view of a backlight module of the present invention
  • the backlight module of the present invention includes a heat dissipation plate 11 , a light guide plate 13 , a middle frame 14 , a light source 16 , and a quantum strip 17 ;
  • the light guide plate 13 is disposed between the heat dissipation plate 11 and the middle frame 14 ;
  • the light guide plate has a light incident side 121 and a light emitting side.
  • a backing plate may be disposed under the heat dissipation plate 11;
  • the light source 16 is disposed on the light incident side 121 of the light guide plate 13; the backlight module may further include a back frame 15, and the light source 16 is fixed on an inner surface of a sidewall of the back frame 15,
  • Light source 16 is, for example, a blue LED light source.
  • the middle frame 14 is located on the light guide plate 13 and the light source 16; that is, on the light guide plate 13 and the light source 16; a groove 111 is disposed on the heat dissipation plate 11 a first buffer block 18 is disposed in the recess 111; the quantum strip 17 is inserted into the recess 111, and one end of the quantum strip 17 abuts the first buffer block 18, the first buffer Block 18 can be bonded to the bottom of the groove 111.
  • the quantum strip 17 of the present invention includes a first substrate 31 and a second substrate 32.
  • the quantum dot material 34 is filled between the first substrate 31 and the second substrate 32, and the first substrate 31 and the second substrate The edges around the substrate 32 are bonded together by a sealant 33.
  • the buffer block is disposed at the bottom of the groove in which the quantum strip is inserted, it is more convenient to replace the quantum strip, avoid collision with the bottom of the groove, and prevent damage to the quantum strip.
  • a second buffer block 19 may be disposed on an inner surface of the sidewall of the back frame 15, and a spacing between the second buffer block 19 and the quantum strip 17 is smaller than the light source 16 and the quantum strip 17
  • the spacing between the two that is, the thickness of the second buffer block 19 (i.e., the width in the horizontal direction in the drawing) is larger than the thickness of the light source 16. Since the thickness of the second buffer block 19 is larger than the thickness of the light source 16, it is prevented from colliding with the light source when the quantum strip is tilted, thereby avoiding damage to the light source.
  • the spacing between the second buffer block 19 and the middle frame 14 is smaller than the spacing between the light source 16 and the middle frame 14, that is, the second buffer block 19 is located above the light source. That is, the second buffer block is closer to the middle frame. Since the top end of the quantum strip is not fixed, the second buffer block is disposed at the top end of the quantum strip, which can better prevent the quantum strip from colliding with the light source when tilted.
  • the second buffer block 19 is bonded to the inner surface of the side wall of the back frame 15, so that the second buffer block can be easily replaced.
  • the end of the second buffer block 19 facing the middle frame 14 is bonded to the middle frame, that is, the upper end of the second buffer block 19
  • the portion is bonded to the surface of the middle frame 14 toward the side of the heat dissipation plate.
  • a third buffer block 20 is disposed between the first side of the light guide plate 13 and the second side of the middle frame 14 , the first side being a side facing the middle frame 14 and the The second side is a side facing the heat dissipation plate 11 , and a spacing between the third buffer block 20 and the quantum strip 17 is smaller than a distance between the light guide plate 13 and the quantum strip 17 , that is,
  • the third buffer block 20 is disposed above the light guide plate 13 near the quantum strip 17, and the side of the third buffer block adjacent to the quantum strip exceeds the light incident surface of the light guide plate, thereby preventing the quantum strip from tilting
  • the light guide plate collides to avoid damage to the light guide plate.
  • the backlight module further includes a reflective sheet 12 disposed between the light guide plate 13 and the heat dissipation plate 11 .
  • the material of the middle frame 14 may be plastic.
  • the quantum strip is inserted into the groove having the buffer block, thereby facilitating replacement of the quantum strip and preventing damage to the quantum strip.
  • the present invention also provides a liquid crystal display device including a backlight module and a liquid crystal display panel.
  • the backlight module of the present invention includes a heat dissipation plate 11 , a light guide plate 13 , a middle frame 14 , a light source 16 , and a quantum strip .
  • the light guide plate 13 is disposed between the heat dissipation plate 11 and the middle frame 14; the light guide plate has a light incident side 121 and a light emitting side, and of course, a back plate may be disposed under the heat dissipation plate 11;
  • the light source 16 is disposed on the light incident side 121 of the light guide plate 13; the backlight module may further include a back frame 15, and the light source 16 is fixed on an inner surface of a sidewall of the back frame 15,
  • Light source 16 is, for example, a blue LED light source.
  • the middle frame 14 is located on the light guide plate 13 and the light source 16; that is, on the light guide plate 13 and the light source 16; a groove 111 is disposed on the heat dissipation plate 11 a first buffer block 18 is disposed in the recess 111; the quantum strip 17 is inserted into the recess 111, and one end of the quantum strip 17 abuts the first buffer block 18, the first buffer Block 18 can be bonded to the bottom of the groove 111.
  • the quantum strip 17 of the present invention includes a first substrate 31 and a second substrate 32.
  • the quantum dot material 34 is filled between the first substrate 31 and the second substrate 32, and the first substrate 31 and the second substrate The edges around the substrate 32 are bonded together by a sealant 33.
  • the buffer block is disposed at the bottom of the groove in which the quantum strip is inserted, it is more convenient to replace the quantum strip, avoid collision with the bottom of the groove, and prevent damage to the quantum strip.
  • a second buffer block 19 may be disposed on an inner surface of the sidewall of the back frame 15, and a spacing between the second buffer block 19 and the quantum strip 17 is smaller than the light source 16 and the quantum strip 17
  • the spacing between the two that is, the thickness of the second buffer block 19 (i.e., the width in the horizontal direction in the drawing) is larger than the thickness of the light source 16. Since the thickness of the second buffer block 19 is larger than the thickness of the light source 16, it is prevented from colliding with the light source when the quantum strip is tilted, thereby avoiding damage to the light source.
  • the spacing between the second buffer block 19 and the middle frame 14 is smaller than the spacing between the light source 16 and the middle frame 14, that is, the second buffer block 19 is located above the light source. That is, the second buffer block is closer to the middle frame. Since the top end of the quantum strip is not fixed, the second buffer block is disposed at the top end of the quantum strip, which can better prevent the quantum strip from colliding with the light source when tilted.
  • the second buffer block 19 is bonded to the inner surface of the side wall of the back frame 15, so that the second buffer block can be easily replaced.
  • the end of the second buffer block 19 facing the middle frame 14 is bonded to the middle frame, that is, the upper end of the second buffer block 19
  • the portion is bonded to the surface of the middle frame 14 toward the side of the heat dissipation plate.
  • a third buffer block 20 is disposed between the first side of the light guide plate 13 and the second side of the middle frame 14 , the first side being a side facing the middle frame 14 and the The second side is a side facing the heat dissipation plate 11 , and a spacing between the third buffer block 20 and the quantum strip 17 is smaller than a distance between the light guide plate 13 and the quantum strip 17 , that is,
  • the third buffer block 20 is disposed above the light guide plate 13 near the quantum strip 17, and the side of the third buffer block adjacent to the quantum strip exceeds the light incident surface of the light guide plate, thereby preventing the quantum strip from tilting
  • the light guide plate collides to avoid damage to the light guide plate.
  • the backlight module further includes a reflective sheet 12 disposed between the light guide plate 13 and the heat dissipation plate 11 .
  • the material of the middle frame 14 may be plastic.
  • the quantum strip is inserted into the groove having the buffer block, thereby facilitating replacement of the quantum strip and preventing damage to the quantum strip.

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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)
  • Liquid Crystal (AREA)

Abstract

一种背光模组及液晶显示装置，包括散热板（11），设置有凹槽（111），其中凹槽（111）内设置有第一缓冲块（18）；导光板（13），位于散热板（11）和中框（14）之间，所述导光板（13）具有入光侧；光源（16），设置在所述导光板（13）的入光侧；中框（14），位于所述导光板（13）和所述光源（16）上；量子条（17），插入所述凹槽（111）内，且所述量子条（17）的一端部与所述第一缓冲块（18）相抵接。

Description

一种背光模组及液晶显示装置 技术领域
本发明涉及显示器技术领域，特别是涉及一种背光模组及液晶显示装置。
 背景技术
随着液晶显示器LCD（Liquid Crystal Display）的不断发展，使得用户对面板的显示质量要求越来越高。
在目前常见的白色背光中，其发光原理为蓝色发光二极管（Light-Emitting Diode，LED）激发黄色荧光粉，其色域饱和值NTSC约在60%~80%之间，为了提升NTSC值，目前采用蓝光LED激发纳米级的量子点，利用量子效应，可使NTSC达到100%以上，提升面板的显示品质。
目前通常将量子点分装在量子条内，以对量子点进行保护。然而现有的量子条（QD）固定的比较牢固，由于其安装位置的空间比较狭窄，不方便更换，导致容易损坏量子条。
因此，有必要提供一种背光模组及液晶显示装置，以解决现有技术所存在的问题。
 技术问题
本发明的目的在于提供一种背光模组及液晶显示装置，以解决现有技术的背光模组及液晶显示装置不方便更换，且容易损坏量子条的技术问题。
 技术解决方案
为解决上述技术问题，本发明构造了一种背光模组，包括：
散热板，设置有凹槽，其中所述凹槽内设置有第一缓冲块；
导光板，位于所述散热板和中框之间，所述导光板具有入光侧；
光源，设置在所述导光板的入光侧；
所述中框，位于所述导光板和所述光源上；
量子条，插入所述凹槽内，且所述量子条的一端部与所述第一缓冲块相抵接；
背框，所述背框的侧壁的内表面上设置有第二缓冲块，所述第二缓冲块与所述量子条之间的间距小于所述光源与所述量子条之间的间距；以及
反射片，设置于所述导光板和所述散热板之间。
在本发明的背光模组中，所述第二缓冲块与所述中框之间的间距小于所述光源与所述中框之间的间距。
在本发明的背光模组中，所述第二缓冲块朝向所述中框的端部粘结在所述中框上。
在本发明的背光模组中，在所述导光板的第一侧以及所述中框的第二侧之间设置有第三缓冲块，所述第三缓冲块与所述量子条之间的间距小于所述导光板与所述量子条之间的间距，所述第一侧为朝向所述中框的一侧，所述第二侧为朝向所述散热板的一侧。
在本发明的背光模组中，所述第一缓冲块粘结在所述凹槽的底部。
为解决上述技术问题，本发明构造了一种背光模组，包括：
散热板，设置有凹槽，其中所述凹槽内设置有第一缓冲块；
导光板，位于所述散热板和中框之间，所述导光板具有入光侧；
光源，设置在所述导光板的入光侧；
所述中框，位于所述导光板和所述光源上；
量子条，插入所述凹槽内，且所述量子条的一端部与所述第一缓冲块相抵接。
在本发明的背光模组中，所述背光模组还包括背框，所述背框的侧壁的内表面上设置有第二缓冲块，所述第二缓冲块与所述量子条之间的间距小于所述光源与所述量子条之间的间距。
在本发明的背光模组中，所述第二缓冲块与所述中框之间的间距小于所述光源与所述中框之间的间距。
在本发明的背光模组中，所述第二缓冲块朝向所述中框的端部粘结在所述中框上。
在本发明的背光模组中，在所述导光板的第一侧以及所述中框的第二侧之间设置有第三缓冲块，所述第三缓冲块与所述量子条之间的间距小于所述导光板与所述量子条之间的间距，所述第一侧为朝向所述中框的一侧，所述第二侧为朝向所述散热板的一侧。
在本发明的背光模组中，所述背光模组还包括反射片，所述反射片设置于所述导光板和所述散热板之间。
在本发明的背光模组中，所述第一缓冲块粘结在所述凹槽的底部。
本发明还提供一种液晶显示装置，其包括：
液晶显示面板，以及
背光模组，其包括：
散热板，设置有凹槽，其中所述凹槽内设置有第一缓冲块；
导光板，位于所述散热板和中框之间，所述导光板具有入光侧；
光源，设置在所述导光板的入光侧；
所述中框，位于所述导光板和所述光源上；
量子条，插入所述凹槽内，且所述量子条的一端部与所述第一缓冲块相抵接。
在本发明的液晶显示装置中，所述背光模组还包括背框，所述背框的侧壁的内表面上设置有第二缓冲块，所述第二缓冲块与所述量子条之间的间距小于所述光源与所述量子条之间的间距。
在本发明的液晶显示装置中，所述第二缓冲块与所述中框之间的间距小于所述光源与所述中框之间的间距。
在本发明的液晶显示装置中，所述第二缓冲块朝向所述中框的端部粘结在所述中框上。
在本发明的液晶显示装置中，在所述导光板的第一侧以及所述中框的第二侧之间设置有第三缓冲块，所述第三缓冲块与所述量子条之间的间距小于所述导光板与所述量子条之间的间距，所述第一侧为朝向所述中框的一侧，所述第二侧为朝向所述散热板的一侧。
在本发明的液晶显示装置中，所述背光模组还包括反射片，所述反射片设置于所述导光板和所述散热板之间。
在本发明的液晶显示装置中，所述第一缓冲块粘结在所述凹槽的底部。
 有益效果
本发明的背光模组及液晶显示装置，通过在现有散热板上设置凹槽，并在凹槽底部设置缓冲块，将量子条插在具有缓冲块的凹槽中，从而便于更换量子条，防止损坏量子条。
 附图说明
图1为本发明的背光模块的结构示意图；
图2为本发明的量子条的放大结构示意图。
图中：11-散热板、12-反射片、13-导光板、14-中框、15-背框、16-光源、17-量子条；18-第一缓冲块、19-第一缓冲块、20-第三缓冲块、111-凹槽、121-入光侧。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是以相同标号表示。
请参照图1，图1为本发明的背光模块的结构示意图；
如图1所示，本发明的背光模块，包括散热板11、导光板13、中框14、光源16、量子条17；导光板13设置于所述散热板11和中框14之间；所述导光板具有入光侧121和发光侧，当然在所述散热板11下方还可设置背板；
所述光源16设置在所述导光板13的入光侧121；所述背光模组还可包括背框15，所述光源16固定在所述背框15的侧壁的内表面上，所述光源16比如为蓝色LED光源。所述中框14位于所述导光板13和所述光源16上；也即盖在所述导光板13和所述光源16上；在所述散热板11上设置有凹槽111，在所述凹槽111内设置有第一缓冲块18；所述量子条17插入所述凹槽111内，且所述量子条17的一端部与所述第一缓冲块18相抵接，所述第一缓冲块18可以粘结在所述凹槽111的底部。
如图2所示，本发明的量子条17包括第一基板31以及第二基板32，所述量子点材料34填充在第一基板31和第二基板32之间，第一基板31和第二基板32四周的边缘通过框胶33粘结在一起。
由于在插入量子条的凹槽底部设置缓冲块，从而可以在更换量子条的时候，更加方便，避免与凹槽底部碰撞，防止损坏量子条。
所述背框15的侧壁的内表面上还可设置有第二缓冲块19，所述第二缓冲块19与所述量子条17之间的间距小于所述光源16与所述量子条17之间的间距，也即第二缓冲块19的厚度（即图中水平方向的宽度）大于所述光源16的厚度。由于第二缓冲块19的厚度大于所述光源16的厚度，从而防止在量子条倾斜时与光源发生碰撞，避免损坏光源。
优选地，所述第二缓冲块19与所述中框14之间的间距小于所述光源16与所述中框14之间的间距，也即所述第二缓冲块19位于所述光源上方，也即所述第二缓冲块更靠近所述中框。由于量子条的顶端未固定，因此，将第二缓冲块设置在量子条顶端位置，可以更好地防止量子条倾斜时与光源发生碰撞。
优选地，所述第二缓冲块19粘结在所述背框15的侧壁的内表面上，从而可以方便地更换第二缓冲块。
为了增强第二缓冲块的固定性，优选地，所述第二缓冲块19的朝向所述中框14的端部粘结在所述中框上，也即所述第二缓冲块19的上端部与所述中框14朝向散热板一侧的表面粘结。
优选地，在所述导光板13的第一侧以及所述中框14的第二侧之间设置有第三缓冲块20，该第一侧为朝向所述中框14的一侧以及所述第二侧为朝向所述散热板11的一侧，所述第三缓冲块20与所述量子条17之间的间距小于所述导光板13与所述量子条17之间的间距，也即所述第三缓冲块20设置在所述导光板13靠近量子条17的上方，且第三缓冲块靠近所述量子条的一侧超出导光板的入光面，从而防止在量子条倾斜时与导光板发生碰撞，避免损坏导光板。
优选地，所述背光模组还可包括反射片12，所述反射片12设置于所述导光板13和所述散热板11之间。所述中框14的材料可以为塑料。
本发明的背光模组，通过在现有散热板上设置凹槽，并在凹槽底部设置缓冲块，将量子条插在具有缓冲块的凹槽中，从而便于更换量子条，防止损坏量子条。
本发明还提供一种液晶显示装置，其包括背光模组和液晶显示面板，如图1所示，本发明的背光模块，包括散热板11、导光板13、中框14、光源16、量子条17；导光板13设置于所述散热板11和中框14之间；所述导光板具有入光侧121和发光侧，当然在所述散热板11下方还可设置背板；
所述光源16设置在所述导光板13的入光侧121；所述背光模组还可包括背框15，所述光源16固定在所述背框15的侧壁的内表面上，所述光源16比如为蓝色LED光源。所述中框14位于所述导光板13和所述光源16上；也即盖在所述导光板13和所述光源16上；在所述散热板11上设置有凹槽111，在所述凹槽111内设置有第一缓冲块18；所述量子条17插入所述凹槽111内，且所述量子条17的一端部与所述第一缓冲块18相抵接，所述第一缓冲块18可以粘结在所述凹槽111的底部。
如图2所示，本发明的量子条17包括第一基板31以及第二基板32，所述量子点材料34填充在第一基板31和第二基板32之间，第一基板31和第二基板32四周的边缘通过框胶33粘结在一起。
由于在插入量子条的凹槽底部设置缓冲块，从而可以在更换量子条的时候，更加方便，避免与凹槽底部碰撞，防止损坏量子条。
所述背框15的侧壁的内表面上还可设置有第二缓冲块19，所述第二缓冲块19与所述量子条17之间的间距小于所述光源16与所述量子条17之间的间距，也即第二缓冲块19的厚度（即图中水平方向的宽度）大于所述光源16的厚度。由于第二缓冲块19的厚度大于所述光源16的厚度，从而防止在量子条倾斜时与光源发生碰撞，避免损坏光源。
优选地，所述第二缓冲块19与所述中框14之间的间距小于所述光源16与所述中框14之间的间距，也即所述第二缓冲块19位于所述光源上方，也即所述第二缓冲块更靠近所述中框。由于量子条的顶端未固定，因此，将第二缓冲块设置在量子条顶端位置，可以更好地防止量子条倾斜时与光源发生碰撞。
优选地，所述第二缓冲块19粘结在所述背框15的侧壁的内表面上，从而可以方便地更换第二缓冲块。
为了增强第二缓冲块的固定性，优选地，所述第二缓冲块19的朝向所述中框14的端部粘结在所述中框上，也即所述第二缓冲块19的上端部与所述中框14朝向散热板一侧的表面粘结。
优选地，在所述导光板13的第一侧以及所述中框14的第二侧之间设置有第三缓冲块20，该第一侧为朝向所述中框14的一侧以及所述第二侧为朝向所述散热板11的一侧，所述第三缓冲块20与所述量子条17之间的间距小于所述导光板13与所述量子条17之间的间距，也即所述第三缓冲块20设置在所述导光板13靠近量子条17的上方，且第三缓冲块靠近所述量子条的一侧超出导光板的入光面，从而防止在量子条倾斜时与导光板发生碰撞，避免损坏导光板。
优选地，所述背光模组还可包括反射片12，所述反射片12设置于所述导光板13和所述散热板11之间。所述中框14的材料可以为塑料。
本发明的液晶显示装置，通过在现有散热板上设置凹槽，并在凹槽底部设置缓冲块，将量子条插在具有缓冲块的凹槽中，从而便于更换量子条，防止损坏量子条。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (19)

  1. 一种背光模组，其包括：
    散热板，设置有凹槽，其中所述凹槽内设置有第一缓冲块；
    导光板，位于所述散热板和中框之间，所述导光板具有入光侧；
    光源，设置在所述导光板的入光侧；
    所述中框，位于所述导光板和所述光源上；
    量子条，插入所述凹槽内，且所述量子条的一端部与所述第一缓冲块相抵接；
    背框，所述背框的侧壁的内表面上设置有第二缓冲块，所述第二缓冲块与所述量子条之间的间距小于所述光源与所述量子条之间的间距；以及
    反射片，设置于所述导光板和所述散热板之间。
  2. 根据权利要求1所述的背光模组，其中
    所述第二缓冲块与所述中框之间的间距小于所述光源与所述中框之间的间距。
  3. 根据权利要求1所述的背光模组，其中
    所述第二缓冲块朝向所述中框的端部粘结在所述中框上。
  4. 根据权利要求1所述的背光模组，其中
    在所述导光板的第一侧以及所述中框的第二侧之间设置有第三缓冲块，所述第三缓冲块与所述量子条之间的间距小于所述导光板与所述量子条之间的间距，所述第一侧为朝向所述中框的一侧，所述第二侧为朝向所述散热板的一侧。
  5. 根据权利要求1所述的背光模组，其中
    所述第一缓冲块粘结在所述凹槽的底部。
  6. 一种背光模组，其包括：
    散热板，设置有凹槽，其中所述凹槽内设置有第一缓冲块；
    导光板，位于所述散热板和中框之间，所述导光板具有入光侧；
    光源，设置在所述导光板的入光侧；
    所述中框，位于所述导光板和所述光源上；以及
    量子条，插入所述凹槽内，且所述量子条的一端部与所述第一缓冲块相抵接。
  7. 根据权利要求6所述的背光模组，其中
    所述背光模组还包括背框，所述背框的侧壁的内表面上设置有第二缓冲块，所述第二缓冲块与所述量子条之间的间距小于所述光源与所述量子条之间的间距。
  8. 根据权利要求7所述的背光模组，其中
    所述第二缓冲块与所述中框之间的间距小于所述光源与所述中框之间的间距。
  9. 根据权利要求7所述的背光模组，其中
    所述第二缓冲块朝向所述中框的端部粘结在所述中框上。
  10. 根据权利要求6所述的背光模组，其中
    在所述导光板的第一侧以及所述中框的第二侧之间设置有第三缓冲块，所述第三缓冲块与所述量子条之间的间距小于所述导光板与所述量子条之间的间距，所述第一侧为朝向所述中框的一侧，所述第二侧为朝向所述散热板的一侧。
  11. 根据权利要求6所述的背光模组，其中
    所述背光模组还包括反射片，所述反射片设置于所述导光板和所述散热板之间。
  12. 根据权利要求6所述的背光模组，其中
    所述第一缓冲块粘结在所述凹槽的底部。
  13. 一种液晶显示装置，其包括：
    液晶显示面板，以及
    背光模组，其包括：
    散热板，设置有凹槽，其中所述凹槽内设置有第一缓冲块；
    导光板，位于所述散热板和中框之间，所述导光板具有入光侧；
    光源，设置在所述导光板的入光侧；
    所述中框，位于所述导光板和所述光源上；以及
    量子条，插入所述凹槽内，且所述量子条的一端部与所述第一缓冲块相抵接。
  14. 根据权利要求13所述的液晶显示装置，其中
    所述背光模组还包括背框，所述背框的侧壁的内表面上设置有第二缓冲块，所述第二缓冲块与所述量子条之间的间距小于所述光源与所述量子条之间的间距。
  15. 根据权利要求14所述的液晶显示装置，其中
    所述第二缓冲块与所述中框之间的间距小于所述光源与所述中框之间的间距。
  16. 根据权利要求14所述的液晶显示装置，其中
    所述第二缓冲块朝向所述中框的端部粘结在所述中框上。
  17. 根据权利要求13所述的液晶显示装置，其中
    在所述导光板的第一侧以及所述中框的第二侧之间设置有第三缓冲块，所述第三缓冲块与所述量子条之间的间距小于所述导光板与所述量子条之间的间距，所述第一侧为朝向所述中框的一侧，所述第二侧为朝向所述散热板的一侧。
  18. 根据权利要求13所述的液晶显示装置，其中
    所述背光模组还包括反射片，所述反射片设置于所述导光板和所述散热板之间。
  19. 根据权利要求13所述的液晶显示装置，其中
    所述第一缓冲块粘结在所述凹槽的底部。
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