CN106773289A - A kind of quantum dot light emitting device and backlight module and liquid crystal display device - Google Patents
A kind of quantum dot light emitting device and backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN106773289A CN106773289A CN201611159573.4A CN201611159573A CN106773289A CN 106773289 A CN106773289 A CN 106773289A CN 201611159573 A CN201611159573 A CN 201611159573A CN 106773289 A CN106773289 A CN 106773289A
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- light
- wave length
- emitting device
- light emitting
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
A kind of quantum dot light emitting device and backlight module and liquid crystal display device provided in the embodiment of the present application, wherein, a kind of quantum dot light emitting device that the present invention is provided is packaged with quantum dot layer and is placed in the illuminating source of the quantum dot layer lower section and transmitting first wave length light, and the quantum dot light emitting device also includes：It is arranged on the illuminating source top and for quantum dot layer described in support and the substrate of transmission first wave length light, is provided for spreading the cambered surface of first wave length light on the surface of the illuminating source in the substrate.There is light diffusion when the first wave length light concentrated in the range of center is by cambered surface, the light beam that light after diffusion is formed has relatively low luminous power and energy, reduce quanta point material suffered luminous power in center range, when preventing quanta point material by concentrating light to irradiate, due to own temperature it is too high caused by fail, improve quantum dot functional reliability, it is ensured that the stabilization output in colour gamut white backlight source high.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of quantum dot light emitting device and backlight module and liquid
Crystal device.
Background technology
With the raising that consumer is required image quality, the colour gamut backlight technology high for improving image quality just turns into liquid crystal display
Research emphasis in technical field.The white backlight source of colour gamut high is generally produced using blue light excitation quantum point material at present, with
Meet demand of the consumer to image quality.
Shown in reference picture 1a, quantum dot light source device 100 includes being packaged between layer glass plate 103 in correlation technique
Quantum dot layer 102, and be placed in the lower section of quantum dot layer 102 and the illuminating source 101 of blue light is provided, quantum dot layer 102 includes receiving
Blue light excites the quanta point material for producing feux rouges and green glow, excites the feux rouges and green glow of gained to be obtained with the blue light for transmiting
The white backlight source of colour gamut high.
The present inventor has found when correlation technique is implemented：The light launched by illuminating source 101 concentrated in center and
Both sides sparse distribution, so the concentration light in center range can form the excitation beam that luminous power is high and energy is big, reference
Shown in Fig. 1 b, quantum dot layer suffered luminous power in center range is high and far above both sides scope.Due to the heat of quanta point material
Stability is poor, and when own temperature is too high, launching efficiency rapid drawdown is even failed, the bloom work(in the range of quanta point material acceptor center
When rate and the big beam excitation of energy, own temperature rises rapidly so that the reduction of quanta point material launching efficiency is even failed, amount
The functional reliability reduction of son point material, it is impossible to ensure that the white backlight source stabilization of colour gamut high is exported.
The content of the invention
To overcome problem present in correlation technique, the present patent application to provide a kind of quantum dot light emitting device and backlight module
And liquid crystal display device, when the optical power beam high formed by concentration light with solving quanta point material to receive is excited, due to
The problem that own temperature raises and causes launching efficiency low or even fail.
In a first aspect, the present patent application provides a kind of quantum dot light emitting device in implementing, it is packaged with quantum dot layer and is placed in
The quantum dot layer lower section and the illuminating source of transmitting first wave length light, the quantum dot layer include being swashed by first wave length light
The quanta point material of second wave length light can be sent after hair, the quantum dot light emitting device also includes：It is arranged on the luminous light
Above source and for quantum dot layer described in support and the substrate of transmission first wave length light, in the substrate near the luminous light
It is provided for spreading the cambered surface of first wave length light on the surface in source.
Further, the quantum dot light emitting device also includes protective layer, and the protective layer is coated on the quantum dot layer
Outer surface and by the quantum dot layer encapsulation on the substrate.
Further, the quantum dot layer and protective layer are set on the substrate in tabular or ellipsoid, wherein, institute
Ellipsoid is stated in away from the direction of the substrate surface toward outer lug.
Further, the first wave length light is blue light and the second wave length light includes feux rouges and green glow, or,
The first wave length light is for purple light and the second wave length light includes feux rouges, green glow and blue light.
Further, the diffusion for spreading the second wave length and first wave length light is also included in the quantum dot layer
Particle.
Further, the quantum dot light emitting device also includes be encapsulated between the substrate and the quantum dot layer two
To chromatograph, the dichroic layer is used to transmit first wave length light and reflects second wave length light.
Second aspect, the present patent application provides a kind of backlight module in implementing, including：Quantum dot hair described in first aspect
Optical device as backlight module backlight.
The third aspect, the present patent application also provides a kind of liquid crystal display device, including display panel and second party in implementing
Backlight module described in face, the display panel is arranged at the top of the backlight module and the back of the body provided by the backlight module
Light completes picture and shows.
Compared with correlation technique, the beneficial effect that the present patent application implements proposed technical scheme includes：
A kind of quantum dot light emitting device that the present patent application is implemented to be provided includes being arranged on illuminating source top and for support
The substrate of quantum dot layer and transmission first wave length light, diffusion the is provided in substrate on the surface of the illuminating source
The cambered surface of one wavelength light.When the first wave length light concentrated in the range of center is by cambered surface, there is light diffusion, after diffusion
The light beam that light is formed has relatively low luminous power and energy, so as to reduce quanta point material institute's light work(in center range
Rate, prevents quanta point material because by concentrating light to irradiate, being failed caused by own temperature is too high, improves the work of quanta point material
Make reliability, it is ensured that the stabilization output in colour gamut white backlight source high.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows and meets implementation of the invention
Example simultaneously is used to explain principle of the invention together with specification.
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 a are the structural representation of the quantum dot light emitting device in correlation technique；
Fig. 1 b are the schematic diagram of the blue light luminous power suffered by the quantum dot layer in correlation technique；
A kind of structural representation of quantum dot light emitting device that Fig. 2 a are provided by the embodiment of the present invention one；
Fig. 2 b are the structural representation of substrate in the embodiment of the present invention one；
The schematic diagram of blue light luminous powers of Fig. 2 c suffered by quantum dot layer in the embodiment of the present invention one；
A kind of structural representation of quantum dot light emitting device that Fig. 2 d are provided by the embodiment of the present invention one；
Fig. 2 e are the structural representation of dichroic layer in the embodiment of the present invention one
The structural representation of the variation that Fig. 3 a are provided by the embodiment of the present invention one；
The structural representation of another variation that Fig. 3 b are provided by the embodiment of the present invention one；
Fig. 4 is a kind of structural representation of quantum dot light emitting device of offer in the embodiment of the present invention two；
A kind of structural representation of backlight module that Fig. 5 a are provided by the embodiment of the present invention three；
Fig. 5 b are the structural representation of the variation of offer in the embodiment of the present invention three；
Fig. 6 is a kind of structural representation of liquid crystal display device of offer in the embodiment of the present invention four.
Specific embodiment
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 carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " on ", D score, " vertical ", " level ", " interior ",
The orientation or position relationship of the instruction such as " outward " are, based on method shown in the drawings or position relationship, to be for only for ease of description this hair
Bright and simplified description, must be with specific orientation, with specific orientation rather than the device or element for indicating or imply meaning
Construction and operation, therefore be not considered as limiting the invention.Term " first ", " second " are only used for describing purpose, without
Be understood that for indicate or imply relative importance or it is implicit indicate or imply it is special including one or more technology
Levy.Thus, " first " is defined, one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the description of the invention, unless otherwise indicated, " multiple " is meant that two or more.
Embodiment one：
A kind of quantum dot light emitting device 200 that embodiments of the invention one are provided, its concrete structure refer to shown in Fig. 2 a, should
Quantum dot light emitting device 200 includes：Substrate 230, coated by protective layer 240 and be encapsulated in the quantum dot layer 220 on substrate 230,
And it is placed in the lower section of substrate 230 and the illuminating source 210 for launching first wave length light.First wave length light is saturating through substrate 230
The quanta point material 221 for being mapped in quantum dot layer 220 and exciting it internal.
Specifically, the concrete structure of substrate 230 refer to Fig. 2 b, and substrate 230 includes top surface 231 and under top surface 231
Side and the bottom surface 232 be arrangeding in parallel, open up the cambered surface 232a of indent on bottom surface 232 along the direction for being close to top surface 231, work as hair
When the first wave length light that radiant 210 is launched incides bottom surface 232, can be to incident from concave surface in the cambered surface 232a of inner concavity
Light be diffused, by spreading after the light beam that is formed of light there is relatively low luminous power and energy.The institute of quantum dot layer 220
Fig. 2 c are refer to by the optical power value of diffusing light, as can be seen that the institute's light in center range of quantum dot layer 220 from Fig. 2 c
Power is uniform and relatively low, and own temperature will not be substantially increased, prevent quanta point material from concentrating because of suffered light, luminous power it is higher and
Caused high temperature failure.
To enable that cambered surface 232a is effectively spread to the light for concentrating on center range, the cambered surface 232a for being opened up
Area it is unsuitable too small, at least so that can be dropped into the concentration light being emitted in center range by illuminating source 210
In its cambered surface 232a.Preferably, at least ensure to fall into the first wave length light of the launch angle within 20 ° with launching centre
Enter in cambered surface 232a.
It is pointed out that the structure type of the cambered surface 232a in the present embodiment can be regular or irregular cambered surface, by
In globoidal structure can be prior art to being diffused from the line of concave surface incident light, so, one of ordinary skill in the art exists
Given other globoidal structures under creative work are not made within the scope of the present invention.
Substrate 230 can be the glass material that can be transmitted first wave length light and intercept moisture and oxygen in external environment, from
Bottom protection quantum dot layer 220 intercepts the moisture and oxygen in the external world, and it is right to be realized in the lump with cladding protective layer 240 on the outer surface
The overall package of quantum dot layer 220, prevents quanta point material 221 from causing failure because meeting moisture and oxygen, improves quantum dot work
The reliability of work.
Specifically, as shown in Figure 2 d, it is packaged with quanta point material 221 and can be by silk in flat quantum dot layer 220
Wire mark brush or the mode of spraying are arranged on substrate top surface 231.Wherein, quanta point material 221 is a diameter of 1nm-10nm and energy
The semiconductor nanocrystal of quantum dot restriction effect is enough shown, the quanta point material of different structure size is excited to launch not
The light of co-wavelength.
Example, when first wave length light is blue light, being packaged with quantum dot layer 220 can launch in the case where blue light is excited
Second wave length light is the quanta point material 221 of feux rouges and green glow, is the feux rouges of 620nm-760nm by exciting gained wave-length coverage
It is the green glow of 500nm-578nm with wave-length coverage, white backlight source is obtained with the blue light transmitted through quantum dot layer 220；Or
Person, when first wave length light be purple light when, be included in quantum dot layer 220 blue light excite down can send second wave length light be it is red
The quanta point material 221 of light, green glow and blue light, by exciting gained wave-length coverage to be for the feux rouges of 620nm-760nm, wave-length coverage
The green glow and wave-length coverage of 500nm-578nm are the blue light of 446nm-464nm, and three is mixed to get white backlight source jointly.
Because quanta point material 221 is influenceed that failure can be triggered by high temperature, oxygen or moisture, it usually needs by quantum dot material
Material 221 is packaged.In the present embodiment, the bottom of the protective layer 240 being coated on completely on the outer surface of quantum dot layer 220 and base
Plate top surface 231 connects so that quantum dot layer 220 is encapsulated in the envelope formed with substrate top surface 231 by the inner surface of protective layer 240
Close in space, prevent quanta point material 221 from being failed because of oxygen or moisture in meeting external environment.Wherein, protective layer 240
Aluminium oxide Al can be used2O3Or silica SiO2As its material, while outside moisture and oxygen is effectively isolated, improve
The translucency of quantum dot light emitting device 200.
For increase excites the rising angle of gained second wave length light and improves light extraction efficiency, it is preferable that in quantum dot layer
Diffusion particle can be equably encapsulated in 220.Wherein, diffusion particle can be SiO2、TiO2、Al2O3、CaCO3、BaSO4, poly- methyl
In methyl acrylate PMMA, polystyrene PS, alkene nitrile-BS ABS, polyurethane PU, organosilicon polymer
One or more.Diffusion particle can uniformly be spread to the second wave length light that quanta point material 221 is excited to send, increase
The rising angle of second wave length light, improves light extraction efficiency and light mixing effect, meanwhile, can also be to inciding in quantum dot layer 220
First wave length light be diffused, prevent from causing the local high temperature failure of quanta point material 221 because light is excessively intensive.
To reduce light losing and improving light utilization, it is preferable that between quantum dot layer 220 and substrate top surface 231
It is packaged with flat dichroic layer 250, concrete structure refer to shown in Fig. 2 e, the transmissive first wave of dichroic layer 250
Light long and second wave length light is reflected.By quanta point material 221 is excited launched second wave length light to appoint
Meaning direction, which part light is not transmitted away directly from quantum dot layer 220 but scattered backward towards substrate top surface, and is dissipated backward
The light penetrated normally outgoing and cannot cause light extraneoas loss.Set dichroic layer 250 can be to the light that scatters backward
Reflected so that some light can directly be transmitted away from quantum dot layer 220, reduced light losing.
Example, if first wave length light is blue light, blue light through dichroic layer 250 be injected into thoroughly quantum dot layer 220 it is interior with
Excitation quantum point material 221, the second wave length light obtained by exciting includes feux rouges and green glow, when the feux rouges for scattering backward and green
Reflected during dichroic layer 250 of the light through being placed on substrate top surface 231, the feux rouges and green glow after reflection are from quantum dot layer 220
Outer surface project, improve light utilization.
Specifically, as shown in Figure 2 a, the illuminating source 210 positioned at the lower section of substrate 230 is settable on circuit boards, by electricity
Road plate provides the electric power needed for illuminating source 210 works.Example, when the first wave length light tool that illuminating source 210 is launched
When body is the blue light that wave-length coverage is 446nm-464nm, illuminating source 210 can select blue LED（LED）Chip；Or
Person, when purple light of the first wave length light specially wave-length coverage that illuminating source 210 is launched for 400nm-446nm, lights
Light source 210 can select violet light emitting diodes（LED）Chip.
Used as a kind of variation of the present embodiment, quantum dot layer 220 can be ellipsoid, and the concrete structure of the variation please join
According to shown in Fig. 3 a, the quantum dot layer 220 of ellipsoid along away from the direction of substrate top surface 231 toward outer lug, quantum dot layer 220 it is whole
Individual ellipsoid outer surface all faces out launching light line as light extraction, and the exiting surface of flat quantum dot layer is top surface and its area
Less than the lighting area of ellipsoid outer surface, therefore, the quantum dot layer of ellipsoid can increasing light lighting area and shooting angle,
Diffusion and homogenization beneficial to light.
As another variation of the present embodiment, be can be set for white obtained by diffusion in the top of quantum dot layer 220
The lens 260 of light source, the concrete structure of the variation refer to shown in Fig. 3 b, wherein, lens 260 include affixed with top surface 231
Bottom surface 262 and outwardly convex arc-shaped outer surface 261, be opened between the arc groove 263 on bottom surface 262 and top surface 231
The cavity for placing quantum dot light emitting device 200 is formed, lens 260 can be carried on the back to the mixture of white sent by quantum dot layer 220
Light source is uniformly spread, and improves the output quality in white backlight source.
A kind of quantum dot light emitting device architecture provided in the present embodiment is simple, for transmiting first wave length light
The cambered surface for diffusing light is opened up in substrate bottom surface, light occurs when the excitation line concentrated in the range of center is by cambered surface
Diffusion, the light beam that the light after diffusion is formed has relatively low luminous power and energy, so as to reduce quanta point material at center
In the range of suffered luminous power, prevent quanta point material by concentrate light irradiate when, due to own temperature it is too high caused by fail,
Moisture and oxygen that the protective layer being coated on quantum dot layer outer surface simultaneously can be intercepted effectively in external environment, so, this reality
Applying the quantum dot light emitting device that example provided can improve the functional reliability and stability of quantum dot, it is ensured that colour gamut white backlight high
The stabilization output in source.
Embodiment two
The structural representation of another quantum dot light emitting device 200 that Fig. 4 is provided by the embodiment of the present invention two, the present embodiment mesh
Be the quantum dot light emitting device for proposing to have another encapsulating structure, shown in reference picture 4, the quantum dot light emitting device 200
Including：Illuminating source 210, quantum dot layer 220, substrate 230, protective layer 240 and packaging part 270.
Specifically, the first cylinder 271 and the second cylinder 272 connect and run through the inside of packaging body 270, the first cylinder
, more than the cross-sectional area of the second cylinder 272, illuminating source 210 sets for 271 tops for being located at the second cylinder 272 and its cross-sectional area
The transmitting first wave length light of quantum dot layer 220 in the center of the first cylinder 271 and upward, substrate bottom surface 232 is fixed in
On the step surface formed between the first cylinder 271 and the second cylinder 272, opened up for spreading first wave in substrate bottom surface 232
Quantum dot layer 220 is encapsulated in substrate top surface by the cambered surface of light long, the protective layer 240 being coated on the outer surface of quantum dot layer 220
On 231, the overall package to quantum dot light emitting device 200 is realized by packaging body 270.
It should be noted that cross-sectional area refers to the face that the plane perpendicular with the axis of packaging body 270 intercepts plane
Product, furthermore, the cross sectional shape of the first cylinder 271 and the second cylinder 272 can be rectangle or circle, not limit herein.
The present embodiment purpose is the encapsulating structure for proposing another quantum dot light emitting device, and substrate and quantum dot layer are consolidated
It is scheduled in packaging body, the overall package to quantum dot light emitting device, quantum dot light emitting device in the present embodiment will be realized by packaging body
The other structures and function of part are identical with the 26S Proteasome Structure and Function of the quantum dot light emitting device provided in embodiment one, herein no longer
Repeated.
Embodiment three
The embodiment of the present invention three provides a kind of backlight module 300 of use straight-down negative structure, shown in reference picture 5a, backlight module
300 include the quantum dot light emitting device 200 provided in above-described embodiment one or embodiment two, also including the backboard in groove-like
301, and positioned at the top of quantum dot light emitting device 200 and the diffuser plate 302 and diaphragm 303 that are cascading.Wherein, quantum dot
Luminescent device 200 is fixed on the bottom portion of groove of backboard 301, and diffuser plate 302 and diaphragm 303 are limited in backboard 301 by backboard frame.
Quantum dot light emitting device 200 is uniformly spread through diffuser plate 302 to the white light source of emission and is penetrated from the surface of diaphragm 303
Go out, diaphragm 303 carries out colorized optical filtering to white light source, improve the output quality of the white light source of backlight module 300.
Used as a kind of variation of the present embodiment, backlight module 300 can also use side entering type structure, shown in reference picture 5b,
Backlight module includes that 300 include the quantum dot light emitting device 200 provided in above-described embodiment one or embodiment two, also including being in
The backboard 301 of groove-like, and it is placed in the groove base plate of backboard 301 and the light guide plate 304 and diaphragm 303 that are cascading.Wherein,
Quantum dot light emitting device 200 is fixed on the side frame of backboard 301 and relative with the incidence surface of light guide plate 304.By quantum dot light emitting
Device 200 is projected through light guide plate 304 to the white light source of emission from the surface of diaphragm 303.
Example IV
Fig. 6 is the liquid crystal display device provided in the present embodiment four, and shown in reference picture 6, the liquid crystal display device includes display
Backlight module 300 provided in panel 501 and embodiment three, display panel 501 is oppositely arranged on the top of backlight module 400
And shown by the white backlight source completion picture that backlight module 400 is provided.
Wherein, the display panel 501 in the present embodiment can be TFT-LCD（Thin Film Transistor Liquid
Crystal Display, liquid crystal display panel of thin film transistor）And AMOLED（Active Matrix Organic Light
Emitting Diode, active matrix organic LED panel）Deng display panel, display panel 501 is used to draw image
Face is shown.
In sum, the present patent application implements a kind of quantum dot light emitting device and backlight module and the liquid crystal for being provided
Showing device, the quantum dot light emitting device for being provided includes being arranged on illuminating source top and for support quantum dot layer and transmission the
The substrate of one wavelength light, is provided for spreading the cambered surface of first wave length light in substrate on the surface of illuminating source.When
When the first wave length light concentrated in center range is by cambered surface, there is light diffusion, the light beam tool that the light after diffusion is formed
There is relatively low luminous power and energy, so as to reduce quanta point material suffered luminous power in center range, prevent quanta point material
Because by light irradiation is concentrated, being failed caused by own temperature is too high, the functional reliability of quanta point material is improved, it is ensured that color high
The stabilization output in domain white backlight source.
Although the present invention, those skilled in the art has shown and described relative to one or more implementations
Equivalent variations and modification will appreciate that based on the reading and understanding to the specification and drawings.The present invention includes all such repair
Change and modification, and be limited only by the scope of the following claims.Particularly with the various functions performed by said modules, use
It is intended to correspond to the specified function of performing the component that (for example it is functionally of equal value in the term of the such component of description
) random component (unless otherwise instructed), even if in structure with the exemplary realization for performing this specification shown in this article
The open structure of the function in mode is not equivalent.Although additionally, the special characteristic of this specification is relative to some realization sides
Only one in formula is disclosed, but this feature can with as that can be to expect and favourable for given or application-specific
One or more of other implementations other combinations of features.And, with regard to term " including ", " having ", " containing " or its deformation
For being used in specific embodiment or claim, such term is intended to the mode bag similar to term "comprising"
Include.
The above is only specific embodiment of the invention, it is noted that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (8)
1. a kind of quantum dot light emitting device, is packaged with quantum dot layer and is placed in the quantum dot layer lower section and transmitting first wave length light
The illuminating source of line, the quantum dot layer includes to be sent after being excited by first wave length light the quantum dot material of second wave length light
Material, it is characterised in that also include：It is arranged on the illuminating source top and for quantum dot layer described in support and transmission first wave
The substrate of light long, is provided for spreading the arc of first wave length light in the substrate on the surface of the illuminating source
Face.
2. quantum dot light emitting device according to claim 1, it is characterised in that also including protective layer, the protective layer bag
Overlay on the outer surface of the quantum dot layer and encapsulate on the substrate the quantum dot layer.
3. quantum dot light emitting device according to claim 2, it is characterised in that the quantum dot layer and protective layer are in flat board
Shape or ellipsoid are set on the substrate, wherein, the ellipsoid is in away from the direction of the substrate surface toward outer lug.
4. quantum dot light emitting device according to claim 1, it is characterised in that the first wave length light is blue light and institute
Stating second wave length light includes feux rouges and green glow, or, the first wave length light is purple light and the second wave length light bag
Include feux rouges, green glow and blue light.
5. quantum dot light emitting device according to claim 1, it is characterised in that also include for expanding in the quantum dot layer
Dissipate the diffusion particle of the second wave length and first wave length light.
6. quantum dot light emitting device according to claim 1, it is characterised in that also including be encapsulated in the substrate with it is described
Dichroic layer between quantum dot layer, the dichroic layer is used to transmit first wave length light and reflects second wave length light.
7. a kind of backlight module, including quantum dot light emitting device as described in right 1-7 any claims is used as the backlight
The backlight of module.
8. a kind of liquid crystal display device, including display panel and backlight module as claimed in claim 7, the display panel set
It is placed in the top of the backlight module and picture is completed by the backlight that the backlight module is provided and shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611159573.4A CN106773289A (en) | 2016-12-15 | 2016-12-15 | A kind of quantum dot light emitting device and backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611159573.4A CN106773289A (en) | 2016-12-15 | 2016-12-15 | A kind of quantum dot light emitting device and backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106773289A true CN106773289A (en) | 2017-05-31 |
Family
ID=58887509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611159573.4A Pending CN106773289A (en) | 2016-12-15 | 2016-12-15 | A kind of quantum dot light emitting device and backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106773289A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020881A (en) * | 2017-12-04 | 2018-05-11 | 福州大学 | It is a kind of to contain light guide plate encapsulating structure of quantum dot micro structure array and preparation method thereof for surface |
| CN108279528A (en) * | 2018-01-17 | 2018-07-13 | 惠州市华星光电技术有限公司 | A kind of backlight |
| CN109407200A (en) * | 2017-08-18 | 2019-03-01 | 三星显示有限公司 | Optical component and display device including it |
| CN109902655A (en) * | 2019-03-11 | 2019-06-18 | 深圳阜时科技有限公司 | Biological characteristic detects mould group and backlight module and electronic device |
| CN110242939A (en) * | 2019-05-31 | 2019-09-17 | 青岛海信电器股份有限公司 | A kind of backlight module and display device |
| CN111308779A (en) * | 2020-03-05 | 2020-06-19 | 深圳市隆利科技股份有限公司 | Direct type backlight device and display equipment |
| CN111338129A (en) * | 2020-04-13 | 2020-06-26 | Tcl华星光电技术有限公司 | Backlight module and display device |
| CN112631021A (en) * | 2020-12-25 | 2021-04-09 | 舟山扑浪实业有限公司 | Quantum dot display panel and self-assembly preparation method thereof |
| WO2023159690A1 (en) * | 2022-02-28 | 2023-08-31 | 广州华星光电半导体显示技术有限公司 | Display backplane and mobile terminal |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232066A (en) * | 2006-09-01 | 2008-07-30 | 克里公司 | Encapsulant profile for light emitting diodes |
| CN101556023A (en) * | 2009-05-14 | 2009-10-14 | 上海广电光电子有限公司 | LED light source with wide-angle lens |
| CN201425257Y (en) * | 2009-05-14 | 2010-03-17 | 上海广电光电子有限公司 | Led light source device |
| CN102620215A (en) * | 2012-04-11 | 2012-08-01 | 深圳市华星光电技术有限公司 | LED backlight light source |
| CN102829392A (en) * | 2012-07-26 | 2012-12-19 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN103672609A (en) * | 2013-12-02 | 2014-03-26 | 深圳市华星光电技术有限公司 | Light source with quantum dots and manufacturing method and application of light source with quantum dots |
| US20140176866A1 (en) * | 2012-12-21 | 2014-06-26 | Hon Hai Precision Industry Co., Ltd. | Led device and liquid crystal display device |
| CN104914622A (en) * | 2015-06-10 | 2015-09-16 | 青岛海信电器股份有限公司 | Quantum dot light generating device and backlight module |
| JP2015225994A (en) * | 2014-05-29 | 2015-12-14 | 日亜化学工業株式会社 | Light-emitting device |
| CN105259701A (en) * | 2015-10-30 | 2016-01-20 | 青岛海信电器股份有限公司 | Light source assembly, backlight module and display device |
| CN105449078A (en) * | 2015-12-21 | 2016-03-30 | 华中科技大学 | White light LED and preparation method thereof |
| CN105444045A (en) * | 2014-09-24 | 2016-03-30 | 青岛海信电器股份有限公司 | LED luminescent device, a backlight unit and a display panel |
| CN105444044A (en) * | 2014-09-24 | 2016-03-30 | 青岛海信电器股份有限公司 | LED luminescent device, backlight unit and display panel |
| CN105867026A (en) * | 2016-06-03 | 2016-08-17 | 青岛海信电器股份有限公司 | Quantum dot light source device, backlight module and liquid crystal display device |
| CN105929635A (en) * | 2016-04-29 | 2016-09-07 | 京东方科技集团股份有限公司 | Quantum dot photo-resist, preparation method thereof, display substrate and display device |
| CN106098906A (en) * | 2016-06-13 | 2016-11-09 | 青岛海信电器股份有限公司 | Quantum dot light emitting device packaging part, backlight module and liquid crystal indicator |
-
2016
- 2016-12-15 CN CN201611159573.4A patent/CN106773289A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232066A (en) * | 2006-09-01 | 2008-07-30 | 克里公司 | Encapsulant profile for light emitting diodes |
| CN101556023A (en) * | 2009-05-14 | 2009-10-14 | 上海广电光电子有限公司 | LED light source with wide-angle lens |
| CN201425257Y (en) * | 2009-05-14 | 2010-03-17 | 上海广电光电子有限公司 | Led light source device |
| CN102620215A (en) * | 2012-04-11 | 2012-08-01 | 深圳市华星光电技术有限公司 | LED backlight light source |
| CN102829392A (en) * | 2012-07-26 | 2012-12-19 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| US20140176866A1 (en) * | 2012-12-21 | 2014-06-26 | Hon Hai Precision Industry Co., Ltd. | Led device and liquid crystal display device |
| CN103672609A (en) * | 2013-12-02 | 2014-03-26 | 深圳市华星光电技术有限公司 | Light source with quantum dots and manufacturing method and application of light source with quantum dots |
| JP2015225994A (en) * | 2014-05-29 | 2015-12-14 | 日亜化学工業株式会社 | Light-emitting device |
| CN105444045A (en) * | 2014-09-24 | 2016-03-30 | 青岛海信电器股份有限公司 | LED luminescent device, a backlight unit and a display panel |
| CN105444044A (en) * | 2014-09-24 | 2016-03-30 | 青岛海信电器股份有限公司 | LED luminescent device, backlight unit and display panel |
| CN104914622A (en) * | 2015-06-10 | 2015-09-16 | 青岛海信电器股份有限公司 | Quantum dot light generating device and backlight module |
| CN105259701A (en) * | 2015-10-30 | 2016-01-20 | 青岛海信电器股份有限公司 | Light source assembly, backlight module and display device |
| CN105449078A (en) * | 2015-12-21 | 2016-03-30 | 华中科技大学 | White light LED and preparation method thereof |
| CN105929635A (en) * | 2016-04-29 | 2016-09-07 | 京东方科技集团股份有限公司 | Quantum dot photo-resist, preparation method thereof, display substrate and display device |
| CN105867026A (en) * | 2016-06-03 | 2016-08-17 | 青岛海信电器股份有限公司 | Quantum dot light source device, backlight module and liquid crystal display device |
| CN106098906A (en) * | 2016-06-13 | 2016-11-09 | 青岛海信电器股份有限公司 | Quantum dot light emitting device packaging part, backlight module and liquid crystal indicator |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407200A (en) * | 2017-08-18 | 2019-03-01 | 三星显示有限公司 | Optical component and display device including it |
| CN108020881A (en) * | 2017-12-04 | 2018-05-11 | 福州大学 | It is a kind of to contain light guide plate encapsulating structure of quantum dot micro structure array and preparation method thereof for surface |
| CN108279528A (en) * | 2018-01-17 | 2018-07-13 | 惠州市华星光电技术有限公司 | A kind of backlight |
| CN109902655A (en) * | 2019-03-11 | 2019-06-18 | 深圳阜时科技有限公司 | Biological characteristic detects mould group and backlight module and electronic device |
| CN110242939A (en) * | 2019-05-31 | 2019-09-17 | 青岛海信电器股份有限公司 | A kind of backlight module and display device |
| CN111308779A (en) * | 2020-03-05 | 2020-06-19 | 深圳市隆利科技股份有限公司 | Direct type backlight device and display equipment |
| CN111338129A (en) * | 2020-04-13 | 2020-06-26 | Tcl华星光电技术有限公司 | Backlight module and display device |
| CN112631021A (en) * | 2020-12-25 | 2021-04-09 | 舟山扑浪实业有限公司 | Quantum dot display panel and self-assembly preparation method thereof |
| WO2023159690A1 (en) * | 2022-02-28 | 2023-08-31 | 广州华星光电半导体显示技术有限公司 | Display backplane and mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106773289A (en) | A kind of quantum dot light emitting device and backlight module and liquid crystal display device | |
| US9803831B2 (en) | Backlight module and display device | |
| CN104566015B (en) | A kind of quantum dot backlight module and display device | |
| JP5070222B2 (en) | Light emitting device with non-activated light emitting material | |
| WO2018113316A1 (en) | Direct backlight module and liquid crystal display device | |
| WO2018120502A1 (en) | Backlight module and display device | |
| US8035122B2 (en) | Light diffusion type light emitting diode | |
| WO2018201610A1 (en) | Light conversion film for use in backlight module, backlight module, and display device | |
| CN108257948B (en) | White light LED and backlight module | |
| CN102628580A (en) | Light guide plate structure, backlight module and manufacturing method thereof | |
| CN103791455B (en) | Side backlight module and preparation method thereof, display device | |
| CN106058015A (en) | Quantum dot light emitting device, backlight module and liquid crystal display device | |
| CN106299076A (en) | A kind of quantum dot light emitting element, backlight module and display device | |
| WO2018120602A1 (en) | Backlight module, display device using same, and manufacturing method of light guide | |
| CN102142510A (en) | Solid light source based on optical wavelength conversion and application of solid light source | |
| TW201320406A (en) | Improved white LED packaging structure for improving light mixing effect | |
| JP6324683B2 (en) | Direct type light source device | |
| CN206946014U (en) | A kind of optical film assembly, backlight module and display device | |
| CN108361566A (en) | A kind of light supply apparatus | |
| TW200850046A (en) | Back light module and light emitting diode package structure therefor | |
| CN209215806U (en) | A kind of backlight module | |
| CN106895278A (en) | A kind of preparation method of LED, backlight module, display device and backlight module | |
| CN106229401A (en) | Fluorescence LED array of packages | |
| CN110085730A (en) | Light emitting device package structure, quantum dot LED light source and electronic device | |
| CN218783048U (en) | LED four-side light-emitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |