CN105759500A - Quantum dot backlight module and liquid crystal television - Google Patents
Quantum dot backlight module and liquid crystal television Download PDFInfo
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- CN105759500A CN105759500A CN201610158034.2A CN201610158034A CN105759500A CN 105759500 A CN105759500 A CN 105759500A CN 201610158034 A CN201610158034 A CN 201610158034A CN 105759500 A CN105759500 A CN 105759500A
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- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
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- 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
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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- 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
- G02F1/133603—Direct backlight with LEDs
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- 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
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- 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
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- 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
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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)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a quantum dot backlight module and a liquid crystal television. The quantum dot backlight module comprises a plurality of quantum dot surface light source modules, wherein each quantum dot surface light source module comprises a light source, a light guide plate set, a reflector block and a quantum dot fluorescent powder module; the light guide plate set is provided with a through hole; the reflector block is embedded in the through hole; the light source is opposite to the reflector block; and the quantum dot fluorescent powder module is arranged between the light source and the reflector block. According to the technical scheme, the thickness of the quantum dot backlight module can be greatly reduced, the image quality can be improved, and the cost can be reduced.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly to a kind of quantum dot backlight module and the LCD TV applying this quantum dot backlight module.
Background technology
Technology of quantum dots is applied to liquid crystal display, can significantly promote colour gamut and the colour vividness of display device, and reduce energy consumption, LCD TV local dimming (LocalDimming) technology of arranging in pairs or groups again of application technology of quantum dots can obtain high dynamic contrast (HDR), reaches the liquid crystal display effect that image quality is true to nature.With reference to Fig. 1, traditional straight-down negative quantum dot backlight module, is arrange blue light LED light source 12 on pcb board 10, and the light of blue light LED light source 12 expands emission area through diffuser plate 14, then excitation quantum point fluorescent film 16 produces high colour gamut white light.Owing to blue light LED light source 12 and quantum dot fluorescence film 16 exist bigger distance, launching efficiency is caused to decline；And the radiation direction of blue light LED light source 12 is discrete type, the light of different directions excites top quantum dot fluorescence film 16 can cause color non-uniform phenomenon；And along with the diffusion of light source, the area of quantum dot fluorescence film 16 needs to increase so that quantum dot backlight module relatively costly, simultaneously because pcb board 10 is big with the spacing of diffuser plate 14, the thickness also making LCD TV is bigger.
Summary of the invention
It is contemplated that one of technical problem solved at least to a certain extent in correlation technique.For this, the present invention proposes a kind of quantum dot backlight module, it is intended to reduces the thickness of quantum dot backlight module, and improves image quality, saves cost.
For achieving the above object, the present invention proposes a kind of quantum dot backlight module, including multiple quantum dot modular surface light sources, each described quantum dot modular surface light source includes light source, light guide plate group, reflex block and quantum dot fluorescence powder module, described light guide plate group is provided with through hole, described reflex block is embedded at described through hole, and described light source and described reflex block are oppositely arranged, and described quantum dot fluorescence powder module is located between described light source and described reflex block.
Preferably, described light guide plate group includes light guide plate and fits in the reflector plate on described light guide plate one surface, and described reflector plate is towards described quantum dot fluorescence powder module, and described through hole runs through described light guide plate and described reflector plate, and described reflex block is located in described light guide plate.
Preferably, described reflex block includes a plane and a curved surface, and described curved surface is towards described quantum dot fluorescence powder module, and described plane and described light guide plate deviate from the flush of described reflector plate.
Preferably, described quantum dot fluorescence powder module includes two package board being oppositely arranged, and is filled in the quantum dot fluorescence bisque between described package board.
Preferably, described quantum dot fluorescence powder module one end is embedded at described through hole, and the described quantum dot fluorescence powder module other end fits in described light source.
Preferably, described light source includes LED seat and multiple luminescence chip, and described LED seat surface is provided with groove to the side of described quantum dot fluorescence powder module, and described bottom portion of groove is located at the plurality of luminescence chip interval.
Preferably, described quantum dot fluorescence powder module covers described groove.
Preferably, described light guide plate is provided with site with the surface of described reflector plate laminating.
Preferably, this quantum dot backlight module also includes pcb board and diffuser plate, and the plurality of quantum dot modular surface light source is located between described pcb board and described diffuser plate, and described light source fits in described pcb board.
Another object of the present invention is to propose a kind of LCD TV, including quantum dot backlight module and display panels, described quantum dot backlight module is positioned at the incidence surface of described display panels, and described quantum dot backlight module is above-mentioned quantum dot backlight module.
Technical solution of the present invention is by arranging multiple quantum dot modular surface light source, the direct excitation quantum dot fluorescent powder layer of monochromatic light that the light source of each quantum dot modular surface light source sends is mixed to form white light, after light injects the reflex block in the through hole being embedded in light guide plate group, a part directly reflects away, another part reflexes in light guide plate group, is converted into the injection of uniform area source by the diffusion of light guide plate group and refraction.Adopt relative to existing quantum dot backlight module pull open blue light LED light source and diffuser plate spacing so that uniform light distribution and produce the structure of area source, the thickness of the quantum dot backlight module of the present invention reduces, and image quality is high, and reduces cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to the structure according to these accompanying drawings obtains other accompanying drawing.
Fig. 1 is the cross section structure schematic diagram of existing quantum dot backlight module；
Fig. 2 is the cross section structure schematic diagram of quantum dot backlight module one embodiment of the present invention；
Fig. 3 be in Fig. 2 quantum dot backlight module the cross section structure schematic diagram of quantum dot modular surface light source；
Fig. 4 is the light path principle figure of quantum dot modular surface light source in Fig. 3.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 10 | Pcb board | 222 | Reflector plate |
| 12 | Blue light LED light source | 223 | Through hole |
| 14 | Diffuser plate | 230 | Reflex block |
| 16 | Quantum dot fluorescence film | 231 | Plane |
| 200 | Quantum dot modular surface light source | 232 | Curved surface |
| 210 | Light source | 240 | Quantum dot fluorescence powder module |
| 211 | LED seat | 241 | Package board |
| 212 | Luminescence chip | 242 | Quantum dot fluorescence bisque |
| 213 | Groove | 300 | Pcb board |
| 220 | Light guide plate group | 400 | Diffuser plate |
| 221 | Light guide plate |
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Need explanation, directional instruction in the embodiment of the present invention (such as up, down, left, right, before and after ...) is only for explaining relative position relation between each parts, motion conditions etc. under a certain particular pose (as shown in drawings), if this particular pose changes, then directionality instruction also correspondingly changes therewith.
In the present invention, unless otherwise clearly defined and limited, term " connection ", " fixing " etc. should be interpreted broadly, for instance, " fixing " can be fixing connection, it is also possible to is removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be.
It addition, in the present invention such as relating to the description of " first ", " second " etc. only for descriptive purposes, and it is not intended that instruction or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.Additionally; technical scheme between each embodiment can be combined with each other; but must be based on those of ordinary skill in the art are capable of; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme is absent from, also not within the protection domain of application claims.
The present invention proposes a kind of quantum dot backlight module.
Fig. 2 is the cross section structure schematic diagram of quantum dot backlight module one embodiment of the present invention；Fig. 3 is the cross section structure schematic diagram of the quantum dot modular surface light source of quantum dot backlight module in Fig. 2；Fig. 4 is the light path principle figure of quantum dot modular surface light source in Fig. 3.
Incorporated by reference to reference to Fig. 2 and Fig. 3, the quantum dot backlight module of one embodiment of the invention, including multiple quantum dot modular surface light sources 200, each quantum dot modular surface light source 200 includes light source 210, light guide plate group 220, reflex block 230 and quantum dot fluorescence powder module 240, light guide plate group 220 is provided with through hole 223, reflex block 230 is embedded at through hole 223, and light source 210 and reflex block 230 are oppositely arranged, and quantum dot fluorescence powder module 240 is located between light source 210 and reflex block 230.
The present embodiment quantum dot backlight module also includes pcb board 300 and diffuser plate 400, and multiple quantum dot modular surface light sources 200 are located between pcb board 300 and diffuser plate 400, and light source 210 fits in pcb board 300.Pcb board 300 is for providing circuit to connect light source 210, and diffuser plate 400 is used for the light homogenization again sent by multiple quantum dot modular surface light sources 200.Multiple quantum dot modular surface light sources 200 are array splicing between pcb board 300 and diffuser plate 400, and the quantity of quantum dot modular surface light source 200 carrying out splicing can be more than 144, realizes LocalDimming technology with this, reaches high colour gamut dynamic effect.It can be circular hole that the present embodiment runs through the shape of the through hole 223 of light guide plate group 220, it is also possible to being square hole or other shapes, the shape of the reflex block 230 being certainly embedded in through hole 223 should be matched.
Technical solution of the present invention is located between pcb board 300 and diffuser plate 400 by the splicing of multiple quantum dot modular surface light sources 200, it is achieved is converted to quantum dot area source by point source, reaches local controlled light action.Quantum dot modular surface light source 200 is provided with reflex block 230 that light source 210, light guide plate group 220 and light source 210 be oppositely arranged and the quantum dot fluorescence powder module 240 between light source 210 and reflex block 230, refer to Fig. 4, the direct excitation quantum dot fluorescent powder module 240 of monochromatic light that light source 210 sends is mixed to form white light, after light injects the reflex block 230 in the through hole 223 being embedded in light guide plate group 220, a part directly reflects away, another part reflexes in light guide plate group 220, and light is penetrated thus forming area source with reflective homogeneous by the refraction of light guide plate group 220.Produce the scheme of area source by widening the spacing of blue light LED light source 12 and diffuser plate 14 relative to tradition quantum dot backlight module, the quantum dot backlight module of the present invention reduces the distance (OD) that pcb board 300 arrives between diffuser plate 400, OD can narrow down within 6 millimeters by traditional more than 15 millimeters so that the quantum dot backlight module thickness of the present invention greatly reduces.And the direct excitation quantum dot fluorescent powder module 240 of light source 210, light diffusion is few, and the area of required quantum dot fluorescence powder module 240 is little, reduces cost；The angle of light source 210 excitation quantum dot fluorescent powder module 240 is roughly the same simultaneously, can improve the uniform in color of launching efficiency and display, and image quality is high.
Refer to Fig. 3, Fig. 4, concrete, light guide plate group 220 includes light guide plate 221 and fits in the reflector plate 222 on light guide plate 221 1 surface, and reflector plate 222 is towards quantum dot fluorescence powder module 240, through hole 223 runs through light guide plate 221 and reflector plate 222, and reflex block 230 is located in light guide plate 221.
The main material of light guide plate 221 is acrylic PMMA (polymethyl methacrylate), and it has significantly high light transmittance, strong shock resistance.In the present embodiment, at the light guide plate 221 surface configuration reflector plate 222 towards quantum dot fluorescence powder module 240, light more in light guide plate 221 can be reflexed to the exiting surface of light guide plate 221 by reflector plate 222, improves the utilization rate of light.
In the present embodiment, reflex block 230 includes plane 231 and a curved surface 232, and curved surface 232 is towards quantum dot fluorescence powder module 240, and plane 231 and light guide plate 221 deviate from the flush of reflector plate 222.
The material of reflex block 230 can be acrylic or other materials.The shape of reflex block 230 should with the mating shapes of through hole 223, and when through hole 223 is circular hole, reflex block 230 can be hemisphere；When being shaped as square of through hole 223, the plane 231 of reflex block 230 is shaped as square.
In the present embodiment, the curved surface 232 of reflex block 230 is towards quantum dot fluorescence powder module 240, namely this curved surface 232 is the incidence surface of reflex block 230, the white light directive curved surface 232 of light source 210 excitation quantum dot fluorescent powder module 240 injection, curved surface 232 can make more light reflex to light guide plate 221 in the way of the reflection of surface, and the light reflected more uniformly directive is to light guide plate 221, light is evenly distributed after entering light guide plate 221 in light guide plate 221 so that in light guide plate 221, the light of injection is evenly.
Concrete, referring once again to Fig. 3, quantum dot fluorescence powder module 240 includes two package board 241 being oppositely arranged and the quantum dot fluorescence bisque 242 being filled between package board 241.
Quantum dot fluorescence bisque 242 is general to be mixed by quantum dot fluorescence powder particles and colloid, and it is more uniform that colloid can make quantum dot fluorescence powder be mixed to get, and is less likely to occur to reunite.Quantum dot fluorescence powder particles in quantum dot fluorescence bisque 242 has many good qualities compared to common phosphors: first, and quantum dot fluorescence powder particles has quantum size effect, because its particle size is much smaller than the size of common fluorescent powder particles；Furthermore, quantum dot fluorescence powder particles illuminant color purity is high, is more suitable for high colour gamut liquid crystal indicator, because its luminescent spectrum is less than 50 nanometers, the luminescent spectrum of common phosphors is then more than 50 nanometers.
The material of package board 241 is generally glass, it is also possible to be in addition to glass possess that air-tightness is good, light transmittance is high, the other materials of Heat stability is good.Package board 241 surrounding can be carried out edge sealing by fluid sealant by encapsulation process, so that quantum dot fluorescence bisque 242 to be completely enclosed.Quantum dot fluorescence bisque 242 is packaged between two package board 241 by the present embodiment; quantum dot fluorescence bisque 242 can be effectively protected by two package board 241; improve stability and the reliability of quantum dot fluorescence bisque 242; extend the service life of quantum dot fluorescence bisque 242; luminous efficiency is stable, and light Color uniformity is good simultaneously.
Specifically, quantum dot fluorescence powder module 240 one end is embedded in through hole 221, and the other end that quantum dot fluorescence powder module 240 deviates from through hole 221 fits in light source 210.
One end of quantum dot fluorescence powder module 240 is embedded at through hole 223 by the present embodiment, the shape of quantum dot fluorescence powder module 240 need to the mating shapes of through hole 223, more being received by reflex block 230 of white light sent after so can making excitation quantum dot fluorescent powder layer 242, improves absorbance and the utilization rate of light further.Simultaneously quantum dot fluorescence powder module 240 deviates from the other end of through hole 223 and fits with light source 210, the direct excitation quantum dot fluorescent powder layer 242 of light that light source 210 sends can be made, the light-wave band intensity inspired is consistent, and the LCD TV picture obtained is more uniform, is not likely to produce aberration.
Specifically, light source 210 includes LED seat 211 and multiple luminescence chip 212, and LED seat 211 is provided with groove 213 towards the side of quantum dot fluorescence powder module 240, and multiple luminescence chip 212 intervals are located at bottom groove 213.
Luminescence chip 212 can be monochromatic light, and technical solution of the present invention uses blue chip, because its blue light source frequency spectrum is higher, it is possible to produce different wavelength, can meet the backlighting requirements of high colour gamut.Accordingly, quantum dot fluorescence bisque 242 constituent at least includes CdSe, Mn/CaS or the ZnS of rubescent green glow.Certain luminescence chip 212 can also is that the light source of other colors, and quantum dot fluorescence bisque 242 needs cooperating therewith, so that can be mixed into uniform white light after exciting.
In the present embodiment, LED seat 211 can be aluminium alloy or copper product, and LED seat 211 can provide certain protection for luminescence chip 212, it is also possible to provides for quantum dot fluorescence powder module 240 and supports.Luminescence chip 212 array arranges, and initial light source so can be made uniformly to penetrate.
Referring once again to Fig. 3, quantum dot fluorescence powder module 240 covers described groove 213.
In the present embodiment, quantum dot fluorescence powder module 240 is completely covered groove 213, the area of the area of quantum dot fluorescence bisque 242 and light source 210 matches, light whole directive quantum dot fluorescence powder module 240 that light source 210 sends can be made, at utmost improve the utilization rate of light；Meanwhile, the quantum dot fluorescence bisque 242 in quantum dot fluorescence powder module 240 can farthest be excited, it is to avoid the waste of quantum dot fluorescence bisque 242, has saved cost.
In the present embodiment, light guide plate 221 is additionally provided with multiple site (sign) with the surface of reflector plate 222 laminating.
The surface of light guide plate 221 can arrange multiple site by the mode of printing, laser or ejection formation, the shape of site has semicircle, circle, ellipse and hexagon etc., the dot area of close through hole 223 is more than the dot area away from through hole 223, and the setting of site can promote the diffusion effect of light.In the present embodiment, one side at light guide plate 221 with reflector plate 222 laminating is provided with multiple site, can fully be broken up when light arrives multiple site of light guide plate 221, show better reflection and refraction effect, and light losing is less, so that light guide plate 221 has higher emitting brightness and better outgoing light homogeneity.
Another object of the present invention is to propose a kind of LCD TV (not shown), including quantum dot backlight module and display panels (not shown), quantum dot backlight module is positioned at the incidence surface of display panels, and quantum dot backlight module is above-mentioned quantum dot backlight module.Owing to the quantum dot backlight module of LCD TV have employed whole technical schemes of above-mentioned all embodiments, therefore at least having all beneficial effects that the technical scheme of above-described embodiment is brought, this is no longer going to repeat them.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every under the inventive concept of the present invention; utilize the equivalent structure transformation that description of the present invention and accompanying drawing content are made, or directly/be indirectly used in other relevant technical fields and be included in the scope of patent protection of the present invention.
Claims (10)
1. a quantum dot backlight module, it is characterized in that, including multiple quantum dot modular surface light sources, each described quantum dot modular surface light source includes light source, light guide plate group, reflex block and quantum dot fluorescence powder module, described light guide plate group is provided with through hole, described reflex block is embedded at described through hole, and described light source and described reflex block are oppositely arranged, and described quantum dot fluorescence powder module is located between described light source and described reflex block.
2. quantum dot backlight module as claimed in claim 1, it is characterized in that, described light guide plate group includes light guide plate and fits in the reflector plate on described light guide plate one surface, described reflector plate is towards described quantum dot fluorescence powder module, described through hole runs through described light guide plate and described reflector plate, and described reflex block is located in described light guide plate.
3. quantum dot backlight module as claimed in claim 2, it is characterised in that described reflex block includes a plane and a curved surface, described curved surface is towards described quantum dot fluorescence powder module, and described plane and described light guide plate deviate from the flush of described reflector plate.
4. the quantum dot backlight module as described in claim 1,2 or 3, it is characterised in that described quantum dot fluorescence powder module includes two package board being oppositely arranged, and is filled in the quantum dot fluorescence bisque between described package board.
5. quantum dot backlight module as claimed in claim 4, it is characterised in that described quantum dot fluorescence powder module one end is embedded at described through hole, and the described quantum dot fluorescence powder module other end fits in described light source.
6. quantum dot backlight module as claimed in claim 1, it is characterized in that, described light source includes LED seat and multiple luminescence chip, and described LED seat surface is provided with groove to the side of described quantum dot fluorescence powder module, and described bottom portion of groove is located at the plurality of luminescence chip interval.
7. quantum dot backlight module as claimed in claim 6, it is characterised in that described quantum dot fluorescence powder module covers described groove.
8. quantum dot backlight module as claimed in claim 2 or claim 3, it is characterised in that the surface that described light guide plate is fitted with described reflector plate is provided with site.
9. quantum dot backlight module as claimed in claim 1, it is characterised in that this quantum dot backlight module also includes pcb board and diffuser plate, and the plurality of quantum dot modular surface light source is located between described pcb board and described diffuser plate, and described light source fits in described pcb board.
10. a LCD TV, including quantum dot backlight module and display panels, described quantum dot backlight module is positioned at the incidence surface of described display panels, it is characterised in that described quantum dot backlight module is the quantum dot backlight module described in claim 1 to 9 any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158034.2A CN105759500A (en) | 2016-03-16 | 2016-03-16 | Quantum dot backlight module and liquid crystal television |
| PCT/CN2016/085867 WO2017156902A1 (en) | 2016-03-16 | 2016-06-15 | Quantum dot backlight module and liquid crystal television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158034.2A CN105759500A (en) | 2016-03-16 | 2016-03-16 | Quantum dot backlight module and liquid crystal television |
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| Publication Number | Publication Date |
|---|---|
| CN105759500A true CN105759500A (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610158034.2A Pending CN105759500A (en) | 2016-03-16 | 2016-03-16 | Quantum dot backlight module and liquid crystal television |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105759500A (en) |
| WO (1) | WO2017156902A1 (en) |
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Also Published As
| Publication number | Publication date |
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| WO2017156902A1 (en) | 2017-09-21 |
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Application publication date: 20160713 |