WO2016201749A1 - 量子管发光装置、背光模组及液晶显示器 - Google Patents

量子管发光装置、背光模组及液晶显示器 Download PDF

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Publication number
WO2016201749A1
WO2016201749A1 PCT/CN2015/083741 CN2015083741W WO2016201749A1 WO 2016201749 A1 WO2016201749 A1 WO 2016201749A1 CN 2015083741 W CN2015083741 W CN 2015083741W WO 2016201749 A1 WO2016201749 A1 WO 2016201749A1
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WIPO (PCT)
Prior art keywords
light
quantum
guide plate
backlight module
structures
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/CN2015/083741
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English (en)
French (fr)
Inventor
曾杰
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.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
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Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US14/890,231 priority Critical patent/US9835784B2/en
Publication of WO2016201749A1 publication Critical patent/WO2016201749A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • 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
    • G02B6/0055—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
    • G02B6/0083—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
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/852—Encapsulations
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a quantum tube light emitting device, a backlight module, and a liquid crystal display.
  • quantum dots can pass through an external light source such as a light emitting diode (Light Emitting) Diode, LED) and other illumination to excite quantum dots to emit high-color solid-state light, its luminescent properties have far exceeded the luminescent properties of phosphors in LED backlights. Therefore, quantum tubes encapsulating quantum dots are widely used in liquid crystal display technology. In the field.
  • an external light source such as a light emitting diode (Light Emitting) Diode, LED) and other illumination to excite quantum dots to emit high-color solid-state light
  • the quantum tube is usually disposed in a plurality of light emitting diodes (Light Emitting) Diode, LED) between the light and the light guide.
  • LED Light Emitting Diode
  • the technical problem to be solved by the present invention is to provide a quantum tube light-emitting device, a backlight module and a liquid crystal display, which can improve light utilization efficiency.
  • a technical solution adopted by the present invention is to provide a backlight module, including:
  • a quantum tube light-emitting device comprising a transparent tubular packaging device and quantum dots encapsulated in the transparent tubular packaging device, the transparent tubular packaging device comprising a light incident surface and a light exit surface, the surfaces of the light incident surface being spaced apart a plurality of raised structures and a plurality of groove structures;
  • LED Light Emitting Diode
  • a light guide plate comprising a light incident side, wherein the light incident side of the light guide plate and the light emitting surface of the quantum tube light emitting device mutually correspond;
  • the surface of the light-emitting surface has a plurality of convex structures and a plurality of groove structures disposed at intervals; the light-incident side of the light-guiding plate is correspondingly provided with a plurality of convex structures and groove structures, and Each of the convex structures on the light incident side of the light guide plate is respectively placed in the groove structure between the two adjacent convex structures of the light emitting surface of the quantum tube light-emitting device ;
  • the groove structure in the light incident surface of the quantum tube illumination device matches the shape of the LED lamp it houses.
  • the method further includes: a plastic frame disposed outside the LED lamp, the quantum tube light emitting device, and the light guide plate.
  • the method further includes: a reflective sheet disposed on a bottom surface of the light guide plate.
  • the method further includes: a flexible circuit board disposed on a top surface of the plurality of LED lamps.
  • the groove structure on the light incident surface and the groove structure on the light exit surface in the transparent tubular packaging device have a square shape.
  • the method further includes: at least one optical film disposed on a top surface of the light guide plate.
  • a backlight module including:
  • a quantum tube light-emitting device comprising a transparent tubular packaging device and quantum dots encapsulated in the transparent tubular packaging device, the transparent tubular packaging device comprising a light incident surface and a light exit surface, the surfaces of the light incident surface being spaced apart a plurality of raised structures and a plurality of groove structures;
  • LED Light Emitting Diode
  • the light guide plate includes a light incident side, wherein the light incident side of the light guide plate and the light emitting surface of the quantum tube light emitting device mutually correspond to each other.
  • the surface of the light-emitting surface has a plurality of convex structures and a plurality of groove structures disposed at intervals; the light-incident side of the light-guiding plate is correspondingly provided with a plurality of convex structures and groove structures, and Each of the convex structures on the light incident side of the light guide plate is respectively placed in the groove structure between the two adjacent convex structures of the light emitting surface of the quantum tube light-emitting device .
  • the method further includes: a plastic frame disposed outside the LED lamp, the quantum tube light emitting device, and the light guide plate.
  • the method further includes: a reflective sheet disposed on a bottom surface of the light guide plate.
  • the groove structure in the light incident surface of the quantum tube light-emitting device matches the shape of the LED lamp housed therein.
  • the method further includes: a flexible circuit board disposed on a top surface of the plurality of LED lamps.
  • the groove structure on the light incident surface and the groove structure on the light exit surface in the transparent tubular packaging device have a square shape.
  • the method further includes: at least one optical film disposed on a top surface of the light guide plate.
  • a quantum tube illuminating device including:
  • a transparent tubular packaging device comprising a light incident surface and a light exit surface, the light incident surface and/or the surface of the light exit surface having a plurality of convex structures and a plurality of groove structures disposed at intervals; the quantum dots are encapsulated in the In a transparent tubular packaging device;
  • the quantum dot When the excitation light illuminates the quantum dot from the light incident surface, the quantum dot is excited to emit light, and light emitted by the quantum dot is emitted from the light exiting surface.
  • the quantum tube light-emitting device of the present invention comprises a transparent tubular packaging device, the surface of the light-incident surface and/or the light-emitting surface is provided with a plurality of spaced apart convex structures and a plurality of a groove structure, wherein a plurality of LED lamps are respectively disposed in a groove structure between two adjacent convex structures in a light incident surface of the quantum tube light-emitting device, and a light-in side of the light guide plate and the quantum tube light-emitting device
  • the illuminating surfaces are set corresponding to each other. In this way, it is possible to prevent light from leaking out between the LED lamp and the quantum tube and between the quantum tube and the light guide plate, thereby improving light utilization.
  • FIG. 1 is a schematic top plan view showing an embodiment of a quantum tube light-emitting device of the present invention.
  • FIG. 2 is a cross-sectional structural view showing an embodiment of a backlight module of the present invention.
  • FIG 3 is a schematic top plan view of an embodiment of a backlight module of the present invention.
  • Figure 4 is an enlarged schematic view of a portion A in Figure 3.
  • FIG. 1 is a schematic top plan view of an embodiment of a quantum tube light-emitting device of the present invention.
  • the quantum tube illumination device 10 includes a quantum dot 11 and a transparent tubular package device 12.
  • Quantum dots 11 are encapsulated in the transparent tubular package device 12.
  • the quantum dot is a nanoparticle composed of a group II-VI or a group III-V.
  • the particle size of a quantum dot is generally less than or equal to 10 nm. Since electrons and holes are quantum confined, a continuous band structure becomes a discrete energy level structure having molecular characteristics, and can emit fluorescence after being excited.
  • the transparent tubular packaging device 12 includes a light incident surface 122 and a light exit surface 124.
  • the surface of the light incident surface 122 and/or the light exit surface 124 has a plurality of convex structures and a plurality of groove structures disposed at intervals.
  • the surface of the light-incident surface 122 and the light-emitting surface 124 have a plurality of convex structures and a plurality of groove structures disposed at intervals.
  • the surface of the light-incident surface 122 has a plurality of intervals.
  • the protrusion structure 1220 and the plurality of groove structures 1221; the surface of the light exit surface 124 has a plurality of protrusion structures 1240 and a plurality of groove structures 1241 spaced apart.
  • the light-incident surface 122 refers to the surface of the tubular packaging device 12 that receives the excitation light when the excitation light is irradiated on the tubular packaging device 12; the light-emitting surface 124 refers to the excitation light entering the tubular packaging device 12 from the light-incident surface 122.
  • the quantum dots 11 are irradiated and the quantum dots 11 are excited to emit light, and the light emitted from the quantum dots 11 emits the surface of the outside.
  • the groove structure and the convex structure may be disposed only on one side of the quantum tube light-emitting device 10, for example, only a plurality of convex structures are disposed on the surface of the light-incident surface 122. 1220 and a plurality of groove structures 1221 for accommodating LED lamps to improve light utilization and color gamut, while the light exit surface 124 abuts the light guide plate in a conventional manner.
  • a plurality of raised structures and a plurality of groove structures are provided on the surface of the light-emitting surface 124. It should be noted that the present embodiment is merely an optimal embodiment and is not intended to limit the present invention.
  • the quantum tube light-emitting device of the present embodiment includes a transparent tubular packaging device, and a surface of the light-incident surface and/or the light-emitting surface is provided with a plurality of spaced apart convex structures and a plurality of groove structures. Quantum dots are packaged in the transparent tubular package.
  • the quantum tube illuminating device is applied to the liquid crystal display device, in this way, the light incident surface and the light exit surface of the quantum tube illuminating device can be closely adhered to the LED lamp and the light guide plate, respectively, to avoid light from the LED lamp and the quantum tube.
  • the gap between the quantum tube and the light guide plate leaks out, thereby improving the light utilization efficiency.
  • the light emitted by the LED lamp can be made uniform, and the light excited by the quantum tube light-emitting device can be made uniform, thereby effectively preventing the occurrence of the pattern between the light and dark of the liquid crystal display device.
  • the surface of the light incident surface and/or the light exit surface of the transparent tubular packaging device is provided with a plurality of spaced apart convex structures and a plurality of groove structures, the surfaces of the light incident surface and the light exit surface are formed into a convex and concave structure. The emission effect of different light rays can be formed under the illumination of different light sources.
  • the groove structure 1221 on the light incident surface 122 of the transparent tubular packaging device 12 has a square shape, and is convenient for accommodating the LED lamp when applied to the liquid crystal display device. Further, the groove structure 1221 in the light incident surface 122 of the quantum tube light-emitting device 12 can match the shape of the LED lamp it accommodates.
  • the groove structure 1241 on the light-emitting surface 124 of the transparent tubular packaging device 12 can also have a square shape. When applied to a liquid crystal display device, it can be fixedly coupled with a square protrusion on the light guide plate.
  • the size of the groove structure 1221 on the light incident surface 122 is larger than the size of the groove structure 1241 on the light exit surface 124.
  • the groove structure 1221 of the light incident surface 122 is not limited to the square shape described above, and may be any other shape corresponding to the LED lamp, so that the LED lamp can be just engaged in the groove.
  • the groove structure 1221 is matched with the shape of the LED lamp housed therein, so that the gap region between the plurality of LED lamps can be sufficiently matched, and the plurality of LED lamp gap regions can be avoided as much as possible. Leaking out the light.
  • the groove structure 1241 of the light-emitting surface 124 is not limited to the square shape described above, and may be any shape that can be more firmly fixed to the light guide plate.
  • the light-emitting surface 124 can also be set to The microstructure of the surface of the light guide plate is matched.
  • the sizes of the groove structures 1221 and 1241 and the protruding structures 1220 and 1240 are not limited to the above-mentioned sizes, and may be adjusted one by one or uniformly according to actual needs or effects when assembled into a backlight module.
  • the quantum dots 10 encapsulated in the transparent tubular packaging device 12 can be one or a mixture of two or more quantum dots having a diameter of less than or equal to 10 nm, and quantum dots of different diameters are illuminated by the same excitation light.
  • the transparent tubular package device 12 can be made to exhibit different colors of light.
  • the quantum tube illuminating device in the embodiment can improve the light utilization efficiency and eliminate the need for mechanical devices such as double-sided tape and hooks through the groove structure and the convex structure of the surface.
  • an auxiliary structure it is firmly attached to the LED lamp and the light guide plate, and the quantum dot can be changed, and the color gamut can be improved after the external light source is transmitted through the quantum tube light-emitting device of the present embodiment.
  • the backlight color gamut formed in the display device is also significantly improved, thereby increasing the color gamut of the display device, making the color of the display device more colorful and gorgeous.
  • the backlight module 100 includes a quantum tube light emitting device 10, a plurality of LED lamps 20, and a light guide plate 30.
  • the quantum tube illuminating device 10 employs the quantum tube illuminating device 10 described above, and will not be described herein.
  • Each LED lamp 20 is placed in a recess structure 1221 between two adjacent raised structures 1220 in the light incident surface 122 of the quantum tube illumination device 10, respectively.
  • the light guide plate 30 includes a light incident side 31, wherein the light incident side 31 and the light exiting surface 124 of the quantum tube light-emitting device 10 correspond to each other.
  • the light incident side 31 of the light guide plate 30 is provided with a plurality of convex structures 312 and groove structures 314, and each convex structure on the light incident side 31 of the light guide plate 30 312 is respectively placed in the groove structure 314 between the two convex structures 312 of the light-emitting surface 124 of the quantum tube light-emitting device 10.
  • the light guide plate 30 is configured to convert the point light source or the line light source emitted from the quantum tube light-emitting device 10 and the LED lamp 20 into a surface light source, and the material of the light guide plate 30 can be any material of the existing light guide plate, such as optical. Grade acrylic and so on.
  • the backlight module 100 further includes a plastic frame 40 disposed outside the plurality of LED lamps 20, the quantum tube illuminating device 10, and the light guide plate 30 for supporting and protecting the quantum tube illuminating device. 10.
  • the backlight module 100 further includes a reflective sheet 50, and a bottom surface 33 of the light guide plate 30 is disposed.
  • the reflective sheet 50 is adhered to the bottom surface 41 of the bezel 40 and/or the bottom surface 33 of the light guide plate 30 by a bonding technique.
  • the pasting technique refers to a technical means for bonding two kinds of unused articles to each other by using a viscous substance.
  • the bonding technique includes, but is not limited to, a coating layer or a double-sided tape.
  • the backlight module 100 further includes a flexible circuit board 60 disposed on the top surface 22 of the plurality of LED lamps 20.
  • the flexible circuit board 60 can be made of a substrate including, but not limited to, a polyimide or a polyester film.
  • the flexible circuit board 60 is disposed on the top surface 22 of the plurality of LED lamps 20 and the top surface 15 of the quantum light emitting device 10.
  • the backlight module 100 further includes at least one optical film (not shown) disposed on the top surface of the light guide plate 30.
  • the backlight module in this embodiment includes a quantum tube light-emitting device, and the quantum tube light-emitting device includes a transparent tubular packaging device, and a plurality of spaced surfaces are disposed on a surface of the light incident surface and/or the light exit surface.
  • a convex structure and a plurality of groove structures the quantum dots being encapsulated in the transparent tubular packaging device, wherein the plurality of LED lamps are respectively placed in recesses between adjacent two convex structures in the light incident surface of the quantum tube light-emitting device
  • the groove structure correspondingly, a plurality of convex structures and groove structures are disposed on the light incident side of the light guide plate corresponding to the light emitting surface of the transparent tubular packaging device, and each convex structure on the light incident side is respectively placed
  • the light-emitting surface of the quantum tube illuminating device is adjacent to the groove structure between the two convex structures.
  • the light incident surface and the light exit surface of the quantum tube light-emitting device can be closely adhered to the LED lamp and the light guide plate, respectively, to avoid light from the gap between the LED lamp and the quantum tube and between the quantum tube and the light guide plate. Leakage, which in turn increases light utilization.
  • the light emitted by the LED lamp can be made uniform, and the light emitted by the quantum tube light-emitting device can be made uniform, thereby effectively preventing the occurrence of light and dark between the patterns exhibited by the liquid crystal display device.
  • the surface of the light-incident surface and the surface of the light-emitting surface of the transparent tubular packaging device are provided with a plurality of protruding structures and a plurality of groove structures, the surface of the light-incident surface and the light-emitting surface is formed into a convex and concave structure.
  • Different light sources can form different light emission effects, and can change the quantum dots, and after the external light source is transmitted through the quantum tube light-emitting device in the embodiment, the color gamut can be improved and applied in the display device.
  • the backlight gamut is also significantly improved, which in turn increases the color gamut of the display device, making it more colorful and colorful.
  • the present invention also provides a liquid crystal display, which includes the backlight module in any of the embodiments described above, and details are not described herein.

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

Abstract

一种量子管发光装置（10）、包含上述量子管发光装置（10）的背光模组（100）及液晶显示器，所述量子管发光装置（10）包括：透明管状封装装置（12），其包括入光面（122）和出光面（124），入光面（122）和/或出光面（124）的表面具有间隔设置的多个凸起结构（1220，1240）和多个凹槽结构（1221，1241）；量子点（11），封装在透明管状封装装置（12）中；当激发光从入光面（122）照射量子点（11）时，激发量子点（11）发光，且量子点（11）发出的光从出光面（124）发射出去。通过这种方式，能够避免光线从LED灯（20）与量子管之间以及量子管与导光板（30）之间的间隙处漏出，进而提高光线利用率。

Description

量子管发光装置、背光模组及液晶显示器
【技术领域】
本发明涉及液晶显示技术领域，特别是涉及一种量子管发光装置、背光模组及液晶显示器。
【背景技术】
由于量子点可通过外部光源如发光二极管（Light Emitting Diode，LED）等照射以激发量子点发出高色度的纯色光线，其发光特性已远远超过LED背光的荧光粉的发光特性，因此，封装有量子点的量子管被广泛应用到液晶显示技术领域中。
目前，在现有的液晶显示装置中，量子管通常设置在多个发光二极管（Light Emitting Diode，LED）灯和导光板之间。然而，光线容易从LED灯与量子管之间以及量子管与导光板之间的间隙处漏出，导致光线利用率较低。
【发明内容】
本发明主要解决的技术问题是提供一种量子管发光装置、背光模组及液晶显示器，能够提高光线利用率。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光模组，包括：
量子管发光装置，其包括透明管状封装装置和封装在所述透明管状封装装置内的量子点，所述透明管状封装装置包括入光面和出光面，所述入光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；
多个发光二极管（Light Emitting Diode，LED）灯，每个所述LED灯分别置入所述量子管发光装置的所述入光面中的相邻两个所述凸起结构之间的所述凹槽结构中；
导光板，其包括入光侧，其中，所述导光板的所述入光侧与所述量子管发光装置的所述出光面相互对应；
其中，所述出光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；所述导光板的所述入光侧上对应设置有多个凸起结构和凹槽结构，且所述导光板的所述入光侧上的每个所述凸起结构分别置入所述量子管发光装置的所述出光面相邻两个所述凸起结构之间的所述凹槽结构中；
所述量子管发光装置的入光面中的所述凹槽结构与其所容纳的所述LED灯的形状相匹配。
其中，进一步还包括：胶框，套设在所述LED灯、所述量子管发光装置以及所述导光板的外部。
其中，进一步还包括：反射片，设置在所述导光板的底面。
其中，进一步还包括：柔性电路板，设置在所述多个LED灯的顶面。
其中，所述透明管状封装装置中的所述入光面上的所述凹槽结构与所述出光面上的所述凹槽结构的形状为方形。
其中，进一步包括：至少一个光学膜片，设置在所述导光板的顶面上。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种背光模组，包括：
量子管发光装置，其包括透明管状封装装置和封装在所述透明管状封装装置内的量子点，所述透明管状封装装置包括入光面和出光面，所述入光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；
多个发光二极管（Light Emitting Diode，LED）灯，每个所述LED灯分别置入所述量子管发光装置的所述入光面中的相邻两个所述凸起结构之间的所述凹槽结构中；
导光板，其包括入光侧，其中，所述导光板的所述入光侧与所述量子管发光装置的所述出光面相互对应。
其中，所述出光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；所述导光板的所述入光侧上对应设置有多个凸起结构和凹槽结构，且所述导光板的所述入光侧上的每个所述凸起结构分别置入所述量子管发光装置的所述出光面相邻两个所述凸起结构之间的所述凹槽结构中。
其中，进一步还包括：胶框，套设在所述LED灯、所述量子管发光装置以及所述导光板的外部。
其中，进一步还包括：反射片，设置在所述导光板的底面。
其中，所述量子管发光装置的入光面中的所述凹槽结构与其所容纳的所述LED灯的形状相匹配。
其中，进一步还包括：柔性电路板，设置在所述多个LED灯的顶面。
其中，所述透明管状封装装置中的所述入光面上的所述凹槽结构与所述出光面上的所述凹槽结构的形状为方形。
其中，进一步包括：至少一个光学膜片，设置在所述导光板的顶面上。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种量子管发光装置，包括：
透明管状封装装置，其包括入光面和出光面，所述入光面和/或所述出光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；量子点，封装在所述透明管状封装装置中；
当激发光从所述入光面照射所述量子点时，激发所述量子点发光，且所述量子点发出的光从所述出光面发射出去。
本发明的有益效果是：区别于现有技术的情况，本发明量子管发光装置包括透明管状封装装置，其入光面和/或出光面的表面设置有间隔的多个凸起结构和多个凹槽结构，其中多个LED灯分别置入量子管发光装置的入光面中的相邻两个凸起结构之间的凹槽结构中，且导光板的入光侧与该量子管发光装置的出光面相互对应设置。通过这种方式，能够避免光线从LED灯与量子管之间以及量子管与导光板之间的间隙处漏出，进而提高光线利用率。
【附图说明】
图1是本发明量子管发光装置的一实施方式的俯视结构示意图。
图2是本发明背光模组的一实施方式的剖视结构示意图。
图3是本发明背光模组的一实施方式的俯视结构示意图。
图4是图3中A处的放大示意图。
【具体实施方式】
下面结合附图和实施方式对本发明进行详细说明。
请参阅图1，图1是本发明量子管发光装置的一实施方式的俯视结构示意图。 该量子管发光装置10包括量子点11和透明管状封装装置12。
量子点11封装在该透明管状封装装置12中。该量子点是一种由II－VI族或III－V族元素组成的纳米颗粒。量子点的粒径一般小于等于10nm，由于电子和空穴被量子限域，连续的能带结构变成具有分子特性的分立能级结构，受激后可以发射荧光。
透明管状封装装置12包括入光面122和出光面124，该入光面122和/或出光面124的表面具有间隔设置的多个凸起结构和多个凹槽结构。在本实施方式中，该入光面122和该出光面124的表面均具有间隔设置的多个凸起结构和多个凹槽结构，具体地，该入光面122的表面具有间隔设置的多个凸起结构1220和多个凹槽结构1221；该出光面124的表面具有间隔设置的多个凸起结构1240和多个凹槽结构1241。其中，入光面122是指当激发光照射在该管状封装装置12时，该管状封装装置12接收激发光的表面；出光面124是指激发光从入光面122进入管状封装装置12内后，照射量子点11并激发量子点11发光，量子点11发出的光发射出外界的表面。
可以理解的是，在其他一些实施方式中，也可以只在量子管发光装置10的一侧设置所述凹槽结构和凸起结构，比如只在入光面122的表面设置多个凸起结构1220和多个凹槽结构1221，以容置LED灯来提高光线利用率和色域，而出光面124则以传统方式与导光板抵接。又或者或者只在该出光面124的表面设置间隔设置的多个凸起结构和多个凹槽结构。需要说明的是，本实施例只是给出了最优实施方式，并不用于限制本发明。
区别于现有技术的情况，本实施方式中的量子管发光装置包括透明管状封装装置，其入光面和/或出光面的表面设置有间隔的多个凸起结构和多个凹槽结构，量子点封装在该透明管状封装装置中。当量子管发光装置应用至液晶显示装置中，通过这种方式，其量子管发光装置的入光面和出光面能够分别与LED灯和导光板紧密贴合，避免光线从LED灯与量子管之间以及量子管与导光板之间的间隙处漏出，进而提高光线利用率。而且通过这种方式能够使LED灯发射出的光线均匀，进而使得量子管发光装置被激发出的光线均匀，从而能够有效防止液晶显示装置所呈现的图案明暗相间的情况发生。另外，由于透明管状封装装置的入光面和/或出光面的表面设置有间隔的多个凸起结构和多个凹槽结构，使该入光面和出光面的表面形成凸凹不平的结构，在不同光源的照射下能够形成不同的光线的发射效果。
进一步地，该透明管状封装装置12中的入光面122上的凹槽结构1221的形状为方形，当应用在液晶显示装置中时，便于容置LED灯。更进一步地，该量子管发光装置12的入光面122中的凹槽结构1221可与其所容置的LED灯的形状相匹配。
该透明管状封装装置12中的出光面124上的凹槽结构1241的形状也可为方形，当应用在液晶显示装置中时，可与导光板上的方形凸起相互配合固定。
进一步地，在一些实施方式中，该入光面122上的凹槽结构1221的大小大于出光面124上的凹槽结构1241的大小。
可以理解的，上述入光面122的凹槽结构1221并不局限于上述所述的方形，还可为其他与LED灯相对应的任何形状，以使该LED灯能够刚好卡合在该凹槽结构1221内，即满足凹槽结构1221与其所容纳的LED灯的形状相匹配即可，如此能充分地与多个LED灯之间间隙区域贴合，最大可能性地避免多个LED灯间隙区域漏出光线。
可以理解的，上述出光面124的凹槽结构1241并不局限于上述所述的方形，还可为其他能够更牢固与导光板固定贴合的任何形状，比如，出光面124还可以设置为与导光板表面的微结构相匹配。
可以理解的，上述凹槽结构1221、1241以及凸起结构1220、1240的大小也不局限于上述所述的大小，可根据实际需要或组装成背光模组时的效果，来逐一或统一调整入光面和出光面上凹槽结构及凸起结构的尺寸。
可以理解的，封装在透明管状封装装置12内的量子点10可为直径小于或等于10nm的量子点中的一种或两种以上的混合物，其不同直径的量子点在同一种激发光照射时可使透明管状封装装置12呈现出不同颜色的光。
区别于现有技术的情况，本实施方式中的量子管发光装置通过表面的凹槽结构和凸起结构，在提高光线利用率的同时，还能在无需例如双面胶、卡勾等机械装置等的辅助结构的情况下，牢固地贴合在LED灯和导光板上，而且可以通过改变量子点，在外部光源透过本实施方式中的量子管发光装置后还能够提高色域，应用在显示装置中后形成的背光色域也显著提高，进而提高显示装置的色域，使其呈现的色彩更加丰富艳丽。
请一并参阅图2至图4。该背光模组100包括量子管发光装置10、多个LED灯20以及导光板30。
量子管发光装置10采用上文所描述的量子管发光装置10，在此不再赘述。
每个LED灯20分别置入量子管发光装置10的入光面122中的相邻两个凸起结构1220之间的凹槽结构1221中。
导光板30包括入光侧31，其中，该入光侧31与量子管发光装置10的出光面124相互对应。
进一步地，在其他一些实施方式中，该导光板30的入光侧31上设置有多个凸起结构312和凹槽结构314，且导光板30的入光侧31上的每个凸起结构312分别置入量子管发光装置10的出光面124相邻两个凸起结构312之间的凹槽结构314中。该导光板30在于使量子管发光装置10和LED灯20发出的点光源或线光源转变为面光源，制成该导光板30的材质可为现有的任何制成导光板的材质，例如光学级的亚克力等。
进一步地，在一些实施方式中，该背光模组100还包括胶框40，套设在多个LED灯20、量子管发光装置10以及导光板30的外部，用于支撑并保护量子管发光装置10、多个LED灯20以及导光板30。
进一步地，在一些实施方式中，该背光模组100还包括反射片50，设置导光板30的底面33。
更进一步地，在一些实施方式中，该反射片50通过粘贴技术而粘贴在胶框40的底面41和/或导光板30的底面33上。其中，所述粘贴技术是指采用具有粘性的物质将两种不用物件相互粘结的技术手段。该粘贴技术包括但不局限于涂布胶层或粘贴双面胶等技术手段。
进一步地，在一些实施方式中，该背光模组100还包括柔性电路板60，设置在多个LED灯20的顶面22。该柔性电路板60可采用包括但不局限于如聚酰亚胺或聚酯薄膜等基材所制成。
更进一步地，在一些实施方式中，该柔性电路板60设置在多个LED灯20的顶面22和量子发光装置10的顶面15。
进一步地，在一些实施方式中，该背光模组100还包括至少一个光学膜片（图未示），设置在导光板30的顶面上。
区别于现有技术的情况，本实施方式中的背光模组包括量子管发光装置，该量子管发光装置包括透明管状封装装置，其入光面和/或出光面的表面设置有间隔的多个凸起结构和多个凹槽结构，量子点封装在该透明管状封装装置中，其中多个LED灯分别置入量子管发光装置的入光面中的相邻两个凸起结构之间的凹槽结构中，对应地，与透明管状封装装置的出光面相互对应的导光板的入光侧上设置有多个凸起结构和凹槽结构，入光侧上的每个凸起结构分别置入量子管发光装置的出光面相邻两个凸起结构之间的凹槽结构中。
通过这种方式，其量子管发光装置的入光面和出光面能够分别与LED灯和导光板紧密贴合，避免光线从LED灯与量子管之间以及量子管与导光板之间的间隙处漏出，进而提高光线利用率。而且能够使LED灯发射出的光线均匀，进而使得量子管发光装置被激发出的光线均匀，从而能够有效防止液晶显示装置所呈现的图案明暗相间的情况发生。另外，由于透明管状封装装置的入光面与出光面的表面均设置有间隔的多个凸起结构和多个凹槽结构，使该入光面和出光面的表面形成凸凹不平的结构，在不同光源的照射下能够形成不同的光线的发射效果，而且可以通过改变量子点，在外部光源透过本实施方式中的量子管发光装置后还能够提高色域，应用在显示装置中后形成的背光色域也显著提高，进而提高显示装置的色域，使其呈现的色彩更加丰富艳丽。
本发明还提供一种液晶显示器，该液晶显示器包括如上文所述的任意一种实施方式中的背光模组，在此不再赘述。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明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，均同理包括在本发明的专利保护范围内。

Claims (15)

  1. 一种背光模组，其中，包括：
    量子管发光装置，其包括透明管状封装装置和封装在所述透明管状封装装置内的量子点，所述透明管状封装装置包括入光面和出光面，所述入光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；
    多个发光二极管（Light Emitting Diode，LED）灯，每个所述LED灯分别置入所述量子管发光装置的所述入光面中的相邻两个所述凸起结构之间的所述凹槽结构中；
    导光板，其包括入光侧，其中，所述导光板的所述入光侧与所述量子管发光装置的所述出光面相互对应；
    其中，所述出光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；
    所述导光板的所述入光侧上对应设置有多个凸起结构和凹槽结构，且所述导光板的所述入光侧上的每个所述凸起结构分别置入所述量子管发光装置的所述出光面相邻两个所述凸起结构之间的所述凹槽结构中；
    所述量子管发光装置的入光面中的所述凹槽结构与其所容纳的所述LED灯的形状相匹配。
  2. 根据权利要求1所述的背光模组，其中，进一步还包括：
    胶框，套设在所述LED灯、所述量子管发光装置以及所述导光板的外部。
  3. 根据权利要求1所述的背光模组，其中，进一步还包括：
    反射片，设置在所述导光板的底面。
  4. 根据权利要求1所述的背光模组，其中，进一步还包括：
    柔性电路板，设置在所述多个LED灯的顶面。
  5. 根据权利要求1所述的背光模组，其中，所述透明管状封装装置中的所述入光面上的所述凹槽结构与所述出光面上的所述凹槽结构的形状为方形。
  6. 根据权利要求1所述的背光模组，其中，进一步包括：
    至少一个光学膜片，设置在所述导光板的顶面上。
  7. 一种背光模组，其中，包括：
    量子管发光装置，其包括透明管状封装装置和封装在所述透明管状封装装置内的量子点，所述透明管状封装装置包括入光面和出光面，所述入光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；
    多个发光二极管灯，每个所述LED灯分别置入所述量子管发光装置的所述入光面中的相邻两个所述凸起结构之间的所述凹槽结构中；
    导光板，其包括入光侧，其中，所述导光板的所述入光侧与所述量子管发光装置的所述出光面相互对应。
  8. 根据权利要求7所述的背光模组，其中，所述出光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；
    所述导光板的所述入光侧上对应设置有多个凸起结构和凹槽结构，且所述导光板的所述入光侧上的每个所述凸起结构分别置入所述量子管发光装置的所述出光面相邻两个所述凸起结构之间的所述凹槽结构中。
  9. 根据权利要求7所述的背光模组，其中，进一步还包括：
    胶框，套设在所述LED灯、所述量子管发光装置以及所述导光板的外部。
  10. 根据权利要求7所述的背光模组，其中，进一步还包括：
    反射片，设置在所述导光板的底面。
  11. 根据权利要求7所述的背光模组，其中，所述量子管发光装置的入光面中的所述凹槽结构与其所容纳的所述LED灯的形状相匹配。
  12. 根据权利要求7所述的背光模组，其中，进一步还包括：
    柔性电路板，设置在所述多个LED灯的顶面。
  13. 根据权利要求7所述的背光模组，其中，所述透明管状封装装置中的所述入光面上的所述凹槽结构与所述出光面上的所述凹槽结构的形状为方形。
  14. 根据权利要求7所述的背光模组，其中，进一步包括：
    至少一个光学膜片，设置在所述导光板的顶面上。
  15. 一种量子管发光装置，其中，包括：
    透明管状封装装置，其包括入光面和出光面，所述入光面和/或所述出光面的表面具有间隔设置的多个凸起结构和多个凹槽结构；
    量子点，封装在所述透明管状封装装置中；
    当激发光从所述入光面照射所述量子点时，激发所述量子点发光，且所述量子点发出的光从所述出光面发射出去。
PCT/CN2015/083741 2015-06-19 2015-07-10 量子管发光装置、背光模组及液晶显示器 Ceased WO2016201749A1 (zh)

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