CN106125399A - Quantum dot film, back light unit and display device - Google Patents
Quantum dot film, back light unit and display device Download PDFInfo
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- CN106125399A CN106125399A CN201610677034.3A CN201610677034A CN106125399A CN 106125399 A CN106125399 A CN 106125399A CN 201610677034 A CN201610677034 A CN 201610677034A CN 106125399 A CN106125399 A CN 106125399A
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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
- G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
-
- 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)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
Abstract
This application provides a kind of quantum dot film, back light unit and display device.This quantum dot film includes quantum dot layer, quantum dot layer includes: the first red quantum point region, first red quantum point edges of regions is closed and is arranged in the marginal zone of quantum dot layer, first red quantum point region includes the first red quantum point resin, red quantum point resin includes red quantum point and the first substrate, and the first substrate includes any one of epoxy resin, acrylate, 1170-002 and polyurethane resin；Green quantum dot region, green quantum dot region is arranged in the non-edge district of quantum dot layer, and green quantum dot region includes that green quantum dot resin, green quantum dot resin include green quantum dot and the second substrate, and the second substrate includes acrylate.The problem that this quantum dot film can alleviate invalid edges.
Description
Technical field
The application relates to display field, in particular to a kind of quantum dot film, back light unit and display device.
Background technology
LCD backlight unit of the prior art begins with quantum dot film and improves display colour gamut, but due to quantum dot itself
Chemical stability is not enough, easily reacts with water oxygen, causes quantum dot generation inefficacy degeneration, affect the luminescent properties of device.In order to
Avoiding water oxygen to attack quantum dot, generally arrange Obstruct membrane in the upper and lower both sides of quantum layer, Obstruct membrane can be carried out by water oxygen to external world
Intercept.
The price of the Obstruct membrane that water oxygen rejection rate is the highest is the highest, but the four of quantum dot layer sides do not have Obstruct membrane to be coated with,
Invalid edges easily occurs, thus need a kind of can low cost solve quantum dot layer invalid edges problem scheme.
Summary of the invention
The main purpose of the application is to provide a kind of quantum dot film, back light unit and display device, to solve existing skill
In art, there is the problem that invalid edges is excessive in quantum dot layer.
To achieve these goals, according to an aspect of the application, it is provided that a kind of quantum dot film, this quantum dot film bag
Including quantum dot layer, above-mentioned quantum dot layer includes: the first red quantum point region, and above-mentioned first red quantum point edges of regions is closed
And be arranged in the marginal zone of described quantum dot layer, above-mentioned first red quantum point region includes the first red quantum point resin,
Above-mentioned first red quantum point resin includes that red quantum point and the first substrate, above-mentioned first substrate include epoxy resin, propylene
Acid ester resin, 1170-002 and polyurethane resin any one；Green quantum dot region, above-mentioned green quantum dot region
Territory is arranged in the non-edge district of above-mentioned quantum dot layer, and above-mentioned green quantum dot region includes green quantum dot resin, above-mentioned green
Color quantum dot resin includes green quantum dot and the second substrate, and above-mentioned second substrate includes acrylate.
Further, above-mentioned first substrate is epoxy resin.
Further, above-mentioned quantum dot layer on the first plane be projected as circle or rectangle, on above-mentioned first plane is
State the extended planar of quantum dot film.
Further, above-mentioned quantum dot layer also includes the second red quantum point region, above-mentioned second red quantum point region
Being arranged on above-mentioned non-edge district, above-mentioned second red quantum point region includes the second red quantum point resin.
Further, above-mentioned first red quantum point region includes multiple first red quantum point subregion and multiple isolation
Wall, adjacent above-mentioned first red quantum point subregion is separated by above-mentioned divider wall.
Further, above-mentioned green quantum dot region includes multiple green quantum dot regions and multiple above-mentioned divider wall,
Above-mentioned second red quantum point region includes multiple second red quantum point subregion and multiple above-mentioned divider wall, above-mentioned quantum dot
Layer also includes that transmission region, above-mentioned transmission region are arranged in above-mentioned non-edge district, and above-mentioned transmission region includes multiple printing opacity
Region and multiple above-mentioned divider wall, above-mentioned divider wall makes adjacent subregion mutually separate.
Further, above-mentioned first red quantum point subregion, above-mentioned green quantum dot region, above-mentioned second amount of red
Son point subregion, the projection on the first plane of above-mentioned printing opacity subregion are rectangle, and above-mentioned first plane is described quantum dot
The extended planar of film.
Further, the emission wavelength of above-mentioned red quantum point is between 600～650nm.
Further, the emission wavelength of above-mentioned green quantum dot is between 490～540nm.
Further, the half-peak breadth of the light wave that above-mentioned red quantum point sends is less than 35nm, preferably smaller than 30nm, further
Preferably smaller than 26nm.
Further, the half-peak breadth of the light wave that above-mentioned green quantum dot sends is less than 35nm, preferably smaller than 30nm, further
Preferably smaller than 26nm.
Further, above-mentioned quantum dot film also includes: the first Obstruct membrane, is arranged on a surface of above-mentioned quantum dot layer
On；Second Obstruct membrane, is arranged on the surface away from above-mentioned first Obstruct membrane of above-mentioned quantum dot layer.
Another aspect according to the application, it is provided that a kind of back light unit, this back light unit includes quantum dot film, this quantum
Point film is above-mentioned quantum dot film.
Further, the light source of above-mentioned back light unit is blue-ray LED, Nan dian Yao or blue light QLED.
Another aspect according to the application, it is provided that a kind of display device, this display device includes quantum dot film, this quantum
Point film is above-mentioned quantum dot film.
The technical scheme of application the application, quantum dot layer is divided into the first red quantum point region and amount of green color by quantum dot film
Son point region, the first red quantum point resin forming the first red quantum point region comprises red quantum point and the first substrate,
Further, the first red quantum point region surrounds above-mentioned green quantum dot region and arranges with the second red quantum point region, because red,
The size of the nano-particle of green quantum dot is different, thus stability is different, and the stability of red quantum point own is higher than green quantum
Point, therefore, the application by red quantum point and the green separate structure of quantum dot, utilize the stability of red quantum point itself
Improve the water and oxygen barrier property of quantum dot film, it is possible to alleviate the invalid edges problem of quantum dot film, it addition, the knot of this quantum dot film
Structure improves the alternative of the host material in the first red quantum point resin, and then can select more cheap substrate material
Expect to reduce the cost of quantum dot film.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing further understanding of the present application, and the application shows
Meaning property embodiment and explanation thereof are used for explaining the application, are not intended that the improper restriction to the application.In the accompanying drawings:
Fig. 1 shows the structural representation of the quantum dot film that a kind of embodiment provides；
Fig. 2 shows the structural representation of the quantum dot film of another kind of embodiment offer；
Fig. 3 shows the structural representation of the quantum dot film that another embodiment provides；
Fig. 4 shows the structural representation of the quantum dot film that another embodiment provides；
Fig. 5 shows the structural representation of the quantum dot film of another kind of embodiment offer；And
Fig. 6 shows the structural representation of the quantum dot film that a kind of embodiment provides.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, the first Obstruct membrane；20, quantum dot layer；21, the first red quantum point region；211, the first red quantum idea
Region；22, green quantum dot region；221, green quantum dot region；23, the second red quantum point region；231, second is red
Color quantum dot region；241, printing opacity subregion；30, the second Obstruct membrane；25, divider wall.
Detailed description of the invention
It it is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless it is another
Indicating, all technology used herein and scientific terminology have usual with the application person of an ordinary skill in the technical field
The identical meanings understood.
It should be noted that term used herein above merely to describe detailed description of the invention, and be not intended to restricted root
Illustrative embodiments according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when using term " to comprise " in this manual and/or " bag
Include " time, it indicates existing characteristics, step, operation, device, assembly and/or combinations thereof.As background technology is introduced,
In prior art, it be not provided with Obstruct membrane in four sides of quantum dot layer and the problem of invalid edges easily occur, in order to solve
As above technical problem, present applicant proposes a kind of quantum dot film, back light unit and display device.
In the application, red quantum point or green quantum dot are that the photoluminescent color according to quantum dot is named, red green amount
Son point component is identical can also be different, according to prior art, and the components unchanged of quantum dot and size change, can obtain not
Quantum dot with glow color.In a kind of typical embodiment of the application, it is proposed that a kind of quantum dot film, as it is shown in figure 1,
This quantum dot film includes quantum dot layer, and this quantum dot layer includes the first red quantum point region 21 and green quantum dot region 22,
Above-mentioned first red quantum point region 21 border seal and be arranged on the marginal zone of described quantum dot layer, above-mentioned first amount of red
Son point region 21 includes that the first red quantum point resin, above-mentioned first red quantum point resin include red quantum point and the first base
Matter, above-mentioned first substrate includes that epoxy resin, acrylate, 1170-002 are any one with polyurethane resin
Kind；Above-mentioned green quantum dot region 22 is arranged in the non-edge district of above-mentioned quantum dot layer, and above-mentioned green quantum dot region 22 is wrapped
Including green quantum dot resin, above-mentioned green quantum dot resin includes green quantum dot and the second substrate, and above-mentioned second substrate includes
Acrylate, above-mentioned first red quantum point region 21 is the first red quantum point region, above-mentioned first red quantum point
Region surrounds above-mentioned green quantum dot region 22 first red quantum point region 21 red with second and arranges.
Quantum dot layer is included red quantum point region and green quantum dot region by above-mentioned quantum dot film, forms amount of red
The first red quantum point resin in son point region comprises red quantum point and the first substrate, and, the first red quantum point region
Surround above-mentioned green quantum dot region the second red quantum point region to arrange, because the size of the nano-particle of quantum dot red, green
Difference, thus stability is different, the stability of red quantum point own is higher than green quantum dot, therefore, the application by amount of red
Son point and the green separate structure of quantum dot, the water oxygen utilizing the stability of red quantum point itself to improve quantum dot film intercepts
Performance, it is possible to alleviate the invalid edges problem of quantum dot film, it addition, the structure of this quantum dot film improves the first red quantum point tree
The alternative of the host material in fat, and then more cheap host material can be selected to reduce the cost of quantum dot film.
Preferably, the first substrate in this first red quantum point region is epoxy resin, and epoxy resin has relatively itself
The water oxygen barrier performance got well and then the water oxygen that the invasion of quantum dot film edge can be intercepted well, and then can preferably alleviate quantum
The problem of the invalid edges of some film, and the method is for the scheme that four sides at quantum dot layer arrange Obstruct membrane, becomes
This is relatively low, and preparation technology is the simplest.It addition, the program also to alleviate green quantum dot green with what epoxy resin poor compatibility caused
The problem of color quantum dot cancellation (causing quantum dot to lose efficacy), and then alleviate the luminosity of the quantum dot film caused due to cancellation
The problem reduced.
The first red quantum point region in the application and the red quantum point in the second following red quantum point region
Resin includes red quantum point and the first substrate, and the first substrate includes epoxy resin, acrylate, 1170-002
With any one of polyurethane resin；Wherein, epoxy resin refers to the organic high score containing two or more epoxide groups
The general name of son, acrylate refers to the general name of the macromolecular material in molecular backbone structure with acrylate group, has
Organic siloxane resin includes polydimethylsiloxane, dimethyl siloxane and methyl vinyl silicone copolymer, dimethyl-silicon
The 1170-002 of other structures containing vinyl in oxygen alkane and phenyl vinyl silicone copolymers or molecule, preferably
Described 1170-002 is selected from acrylate modified organic siliconresin, and acrylate modified organic siliconresin refers to that molecule is tied
With the general name of polysiloxane resin of acrylate group in structure；Polyurethane resin refers in molecular structure with amino
The general name of the macromolecular material of carbamate group, the most described polyurethane resin be selected from polymerization of acrylic modified polyurethane resin, third
The ester modified polyurethane resin of olefin(e) acid refers to the macromolecule material in molecular structure with acrylate group and carbamate groups
The general name of material.The resin of above-mentioned first substrate can also include other and the compatible good resin of red quantum point.
In the another kind of embodiment of the application, the first red quantum point resin can also include light trigger, such as free radical
Firming agent, thermal curing agents, cation curing agent, it is also possible to include additive, such as granule proliferation etc..Wherein, red quantum point
Weight account for the 0.05～1% of red quantum point resin.Certainly those skilled in the art can contain by quantum point as required
Amount is to reach specific light intensity.
Similarly, the green quantum dot resin of the application includes green quantum dot and the second substrate, and the second substrate includes third
Alkene acid ester resin, it is also possible to include light trigger, such as free radical curing agent, thermal curing agents, cation curing agent, it is also possible to bag
Include some additives, such as granule proliferation etc..Wherein, the weight of green quantum dot accounts for the 0.05～1% of green quantum dot resin.
Certainly those skilled in the art can as required quantum point content to reach specific light intensity.
The another kind of embodiment of the application can also include the second red quantum point region, the second red quantum point region
Being arranged in the non-edge district of quantum layer, the second red quantum point region includes the second red quantum point resin.Second amount of red
Son point resin includes red quantum point and the first substrate, and the first substrate includes epoxy resin, acrylate, organosiloxane
Any one of resin and polyurethane resin.First red quantum point resin and the second red quantum point resin can be identical
, it is also possible to being different, those skilled in the art can select suitable first red quantum point resin according to practical situation
With the second red quantum point resin.
The first red quantum point region in the application can include multiple first red quantum point subregion and multiple every
From wall, the first adjacent red quantum point subregion is separated by described divider wall.Preferably, this divider wall has light blocking,
Luminescence between the first adjacent red quantum point subregion is not interfere with each other.
The another kind of embodiment Green quantum dot region of the application include multiple green quantum dot region and multiple every
From wall, the second red quantum point region includes multiple second red quantum point subregion and multiple divider wall, quantum dot layer non-
Can also include transmission region in marginal zone, transmission region includes multiple printing opacity subregion and multiple divider wall.This transmission region
The light sent in order to light source without light conversion, go out, so that light is formed richer after quantum dot layer by direct transmission
Rich color.The material that transmission region is formed includes but not limited to curable transparent or semitransparent resin.Work as excitation source
When sending blue light, the excitated red and green quantum dot of some blue light forms HONGGUANG and green glow respectively, and also some blue light is the most saturating
Penetrate transmission region, thus obtain RGB primaries.Divider wall makes tinctorial yield point subregion and non-quantum point subregion mutually minute
Every.Preferably, this divider wall has light blocking so that the adjacent luminescence between quantum dot region does not interfere with each other, the most thoroughly
The light of light subregion also will not be revealed and cause the quantum dot in assorted quantum dot region to be stimulated and luminous.This quantum dot film is permissible
It is used in combination with electroluminescent device (OLED or QLED), it is also possible to substitute the optical filter in conventional liquid crystal, thus carry
High-energy utilization rate.
In another embodiment of the application in another embodiment of above-mentioned the application in the quantum dot layer in non-edge district
Blue quantum dot region can also be included.
The constituent in assorted quantum dot region can be identical, it is also possible to is different.
Described quantum dot layer 20 on the first plane be projected as rectangle or circle, described first plane is described quantum dot
The extended planar of film.Assorted quantum dot region and the projection on the first plane of printing opacity subregion in the application can be to appoint
What shape, such as, can be circle, rectangle, annular, and rectangle frame, triangle, polygon, corner are the rectangle of arc shaped, annular
And rectangle frame etc..Those skilled in the art can be according to practical situation by red quantum point subregion and green quantum dot district
Territory is set to suitable shape.
Such as, the quantum dot layer in Fig. 1 includes the first red quantum point region 21 and green quantum dot region 22, wherein,
First red quantum point region 21 is rectangle frame, and green quantum dot region 22 is rectangle；Quantum dot layer in Fig. 2 includes that first is red
Color quantum dot region 21 and green quantum dot region 22, wherein the first red quantum point region 21 is annular, green quantum dot region
Territory 22 is circular；Quantum dot layer shown in Fig. 3 includes first the 21, second red quantum point region, red quantum point region 23, bag
Including the second red quantum point subregion 231 of two rectangles, green quantum dot region 22, including the green quantum dot of two rectangles
Subregion 221, the quantum dot layer shown in Fig. 4 includes 2, one, the first red quantum point region the second red quantum point subregion
231 and two green quantum dot regions 221, wherein, the first red quantum point region 21 and one of them green quantum dot
Region 221 is rectangle frame, and another one green quantum dot region 221 is rectangle；Quantum dot layer shown in Fig. 5 includes array
Multiple first red quantum point subregions 211 of arrangement, multiple second red quantum point subregion 231 and multiple green quantum dots
Subregion 221, multiple printing opacity subregions 241, divider wall 25 (thick line represents) separates adjacent quantum dot region and the sub-district of printing opacity
Territory 241, thus prevent two form and aspect from mixing, it is also possible to the light preventing the sub regions from sending excites or is transmitted through and adjacent need not luminescence
Subregion.
In a kind of embodiment of the application, above-mentioned quantum dot layer on the first plane be projected as rectangle, above-mentioned first flat
Face is the extended planar of above-mentioned quantum dot film.So that the light that light source can be sent by quantum dot layer is preferably converted to be suitable for
In the white light of display device, the emission wavelength of the preferred above-mentioned red quantum point of the application is between 600～650nm.
Similarly, the emission wavelength of the preferred above-mentioned green quantum dot of the application is between 490～540nm.
In a kind of embodiment of the application, the half-peak breadth of the light wave that above-mentioned red quantum point sends is less than 35nm, the least
In 30nm, it is further preferably no larger than 26nm.So excitation of the light that red quantum point sends is high, it is possible to green quantum dot,
The mixing that LED blue-light source sends, obtains high colour gamut (CIE is more than or equal to 100%) and the display of stability.
So that the excitation of light wave that green quantum dot sends is high, the preferred above-mentioned green quantum dot of the application sends
The half-peak breadth of light wave is less than 35nm, preferably smaller than 30nm, is further preferably no larger than 26nm.
Entering quantum dot layer to preferably intercept water oxygen, as shown in Figure 6, the preferred above-mentioned quantum dot film of the application also includes
First Obstruct membrane 10 and the second Obstruct membrane 30, wherein, the first Obstruct membrane 10 is arranged on the surface of quantum dot layer 20, and second intercepts
Film 30 is arranged on the surface away from the first Obstruct membrane 10 of quantum dot layer 20.
First Obstruct membrane and the second Obstruct membrane can be the Obstruct membranes of the stack layer structure of polymer and inorganic matter, or nothing
Machine oxide or the monofilm of nitride, such as pellumina, oxidation titanium film, silicon oxide film, silicon nitride film etc..But do not limit
In the above-mentioned Obstruct membrane enumerated, and, the first Obstruct membrane and the second Obstruct membrane can be identical, it is also possible to be different.This
Skilled person can select suitable material and the first Obstruct membrane of structure and the second Obstruct membrane according to practical situation.
In the another kind of typical embodiment of the application, it is provided that a kind of back light unit, this back light unit includes quantum
Point film, this quantum dot film is above-mentioned quantum dot film.
The problem that quantum dot film in this back light unit is not easy invalid edges occur so that this back light unit has longer
Service life.
In above-mentioned back light unit, when quantum dot film is red green quantum dot film, excitation source can be blue light source or
Purple light light source.When quantum dot film is RGB color quantum dot film, excitation source can be purple light light source.Another of the application
In embodiment, the light source of above-mentioned back light unit is blue-ray LED or blue-ray organic electroluminescent diode (OLED) or quantum dot electricity
Photoluminescence diode (QLED).So can realize white light in a simpler manner.
In the typical embodiment of another of the application, it is provided that a kind of display device, this display device includes quantum
Point film, this quantum dot film is above-mentioned quantum dot film.This display device includes above-mentioned quantum dot film so that this display device has
There is longer service life.
So that those skilled in the art can be best understood from the technical scheme of the application, below with reference to concrete
The technical scheme of the application is illustrated by embodiment with comparative example.
Embodiment 1
Quantum dot film includes quantum dot layer, this quantum dot layer, as it is shown in figure 1, this quantum dot layer includes one first redness
Quantum dot region 21 and green quantum dot region 22.Wherein, the first red quantum point region 21 is the first red quantum point region,
First red quantum point region by red quantum point resin formation, above-mentioned red quantum point resin include red quantum point, first
Substrate, additive and thermal curing agents, wherein, red quantum point is CdSe/CdS nucleocapsid structure, a diameter of 4nm of CdSe core, part
For oleic acid root, the emission wavelength of this quantum dot is 620nm, and its percentage by weight is 0.1%, a width of 33nm of its half-peak；First base
Matter is bisphenol A epoxide resin, and its percentage by weight is 98.8%；Additive be spherical particle diameter be 10 μm titanium dioxide diffusion
Particle, its percentage by weight is 0.2%；Thermal curing agents is ethylenediamine, and percentage by weight is 0.9%.Green quantum dot region 22
By green quantum dot resin formation, above-mentioned green quantum dot resin includes green quantum dot, the second substrate, diffusion particle and thermosetting
Agent, wherein, green quantum dot is CdSe/CdS nucleocapsid structure, and a diameter of 2.5nm of CdSe core, part is oleic acid root, this quantum
The emission wavelength of point is 540nm, and its percentage by weight is 0.1%, a width of 33nm of its half-peak；Second substrate is polymethylacrylic acid
Ester resin, its percentage by weight is 98.8%；Diffusion particle be spherical particle diameter be the titanium dioxide of 10 μm, its percentage by weight
It is 0.2%；Light curing agent is 1-hydroxycyclohexylphenylketone, and its percentage by weight is 0.9%.The size of quantum dot film is 6cm
×6cm。
Embodiment 2
Difference with embodiment 1 is: quantum dot film also includes the first Obstruct membrane 10 and the second Obstruct membrane 30, concrete structure
As shown in Figure 6, the first Obstruct membrane 10 and the second Obstruct membrane 30 are aluminium oxide Obstruct membrane, and its permeability rate is 0.1g/m2Day,
Its oxygen transmission rate is 0.01cc/m2·day。
Embodiment 3
Difference with embodiment 2 is: the first substrate is polymethacrylate resin.
Embodiment 4
Difference with embodiment 2 is: the first substrate is acrylate modified organic siliconresin.
Embodiment 5
Difference with embodiment 2 is: the first substrate is polymerization of acrylic modified polyurethane resin.
Comparative example 1
Difference with embodiment 1 is, quantum dot layer 20 is by red quantum point, green quantum dot, epoxy resin, acrylic acid
Resin additive, thermal curing agents and light curing agent, wherein, red quantum point is CdSe/CdS nucleocapsid structure, and CdSe core is a diameter of
4nm, part is oleic acid root, and the emission wavelength of this quantum dot is 620nm, and its percentage by weight is 0.05%, and its half-peak is a width of
33nm；Green quantum dot is CdSe/CdS nucleocapsid structure, a diameter of 2.5nm of CdSe core, and part is oleic acid root, sending out of this quantum dot
The a length of 540nm of light wave, its percentage by weight is 0.05%, a width of 33nm of its half-peak, and the percentage by weight of bisphenol A epoxide resin is
50%；The percentage by weight of polymethacrylate resin is 48.8%, additive be spherical particle diameter be the titanium dioxide of 50 μm
Titanium diffusion particle, its percentage by weight is 0.2%, and wherein thermal curing agents and light curing agent are 0.4% and 0.5% respectively.
Comparative example 2
Difference with comparative example 1 is: quantum dot film also includes the first Obstruct membrane and the second Obstruct membrane, and this Obstruct membrane is oxidation
Aluminum Obstruct membrane, its permeability rate is 0.1g/m2Day, its oxygen transmission rate is 0.01cc/m2·day。
Testing the luminous efficiency before and after aging of the quantum dot film in each embodiment and light transmittance, test result is shown in
Table 1 wherein, aging after quantum dot film be in high temperature blue light illumination, under conditions of high temperature (65 DEG C) high humidity (95%), aging
Obtain after 1000h.
The luminous efficiency detection method of corresponding quantum dot film is: utilize wavelength for 450nm blue led lamp as backlight light
Source, utilizes integrating sphere to test Blue backlight spectrum and the spectrum through quantum dot film respectively, utilizes the integral area meter of spectrogram
Calculate luminous efficiency.Luminous efficiency=(red quantum point absworption peak area+green quantum dot absworption peak area)/(Blue backlight face
Long-pending-through the unabsorbed blue peak area of quantum dot film) × 100%.And determine quantum dot film edge by under microscope
The size of invalid edges.
Table 1
From the data of table 1, compared with comparative example 1, the quantum dot film of embodiment 1 and embodiment 5 is after aging, luminous
Efficiency change is less, and invalid edges is narrower.Wherein, compared with Example 1, embodiment 2 includes the first Obstruct membrane and the second resistance
Barrier film so that quantum dot film is after aging, and luminous efficiency change is less, and invalid edges is narrower；With embodiment 3,4 compared with 5, by
The first substrate in embodiment 2 have employed epoxy resin so that quantum dot film is after aging, and luminous efficiency change is less, and nothing
Effect limit is narrower.
As can be seen from the above description, the application the above embodiments achieve following technique effect:
1), quantum dot layer is divided into red quantum point region and green quantum dot region, shape by the quantum dot film in the application
The red quantum point resin becoming red quantum point region comprises red quantum point and the first substrate, and, the first red quantum point
Region surrounds above-mentioned green quantum dot region and arranges, because the size of the nano-particle of quantum dot red, green is different, thus stability
Difference, the stability of red quantum point own is higher than green quantum dot, therefore, the application by red quantum point and green quantum dot
Separate structure, utilizes the stability of red quantum point itself to improve the water and oxygen barrier property of quantum dot film, it is possible to relieving amount
The invalid edges problem of son point film, it addition, the structure of this quantum dot film improves the host material in the first red quantum point resin
Alternative, and then can select more cheap host material with reduce quantum dot film cost.
2), the problem that the back light unit in the application is not easy invalid edges occur so that this back light unit has longer
Service life.
3), the display device in the application includes above-mentioned quantum dot film, owing to this quantum dot film has longer use
Life-span so that display device also has the longer life-span.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.All within spirit herein and principle, that is made any repaiies
Change, equivalent, improvement etc., within should be included in the protection domain of the application.
Claims (15)
1. a quantum dot film, including quantum dot layer (20), it is characterised in that described quantum dot layer (20) including:
First red quantum point region (21), described red quantum point region (21) border seal and be arranged on described quantum dot layer
(20), in marginal zone, described first red quantum point region (21) includes the first red quantum point resin, and described first is red
Quantum dot resin includes that red quantum point and the first substrate, described first substrate include epoxy resin, acrylate, organic
Any one of silicone resin and polyurethane resin；And
Green quantum dot region (22), described green quantum dot region (22) is arranged on the non-edge district of described quantum dot layer (20)
In, described green quantum dot region (22) includes that green quantum dot resin, described green quantum dot resin include green quantum dot
With the second substrate, described second substrate includes acrylate.
Quantum dot film the most according to claim 1, it is characterised in that described first substrate is epoxy resin.
Quantum dot film the most according to claim 1, it is characterised in that described quantum dot layer (20) throwing on the first plane
Shadow is rectangle or circle, and described first plane is the extended planar of described quantum dot film.
Quantum dot film the most according to claim 1, it is characterised in that described quantum dot layer (20) also includes the second amount of red
Son point region (23), described second red quantum point region (23) is arranged on described non-edge district, described second red quantum point
Region (23) includes the second red quantum point resin.
Quantum dot film the most according to claim 4, it is characterised in that described first red quantum point region (21) includes many
Individual first red quantum point subregion (211) and multiple divider wall (25), adjacent described first red quantum point subregion (211)
Separated by described divider wall (25).
Quantum dot film the most according to claim 5, it is characterised in that described green quantum dot region (22) includes multiple green
Color quantum dot region (221) and multiple described divider wall (25), described second red quantum point region (23) includes multiple
Two red quantum point subregion (231) and multiple described divider wall (25)；Described quantum dot layer (20) also includes transmission region, institute
Stating transmission region to be arranged in described non-edge district, described transmission region includes multiple printing opacity subregion (241) and multiple described
Divider wall (25), described divider wall (25) makes adjacent described printing opacity subregion (241) mutually separate.
Quantum dot film the most according to claim 6, described first red quantum point subregion (211), described green quantum
Point subregion (221), described second red quantum point subregion (231) and described printing opacity subregion (24) are on the first plane
Projection is rectangle, and described first plane is the extended planar of described quantum dot film.
Quantum dot film the most according to claim 1, it is characterised in that the emission wavelength of described red quantum point 600～
Between 650nm.
Quantum dot film the most according to claim 1, it is characterised in that the emission wavelength of described green quantum dot 490～
Between 540nm.
Quantum dot film the most according to claim 1, it is characterised in that the half-peak of the light wave that described red quantum point sends
Wide less than 35nm, preferably smaller than 30nm, it is further preferably no larger than 26nm.
11. quantum dot films according to claim 1, it is characterised in that the half-peak of the light wave that described green quantum dot sends
Wide less than 35nm, preferably smaller than 30nm, it is further preferably no larger than 26nm.
12. quantum dot films according to claim 1, it is characterised in that described quantum dot film also includes:
First Obstruct membrane (10), is arranged on a surface of described quantum dot layer (20)；And
Second Obstruct membrane (30), is arranged on the surface away from described first Obstruct membrane (10) of described quantum dot layer (20).
13. 1 kinds of back light units, including quantum dot film, it is characterised in that described quantum dot film is arbitrary in claim 1 to 12
Quantum dot film described in Xiang.
14. according to the back light unit shown in claim 13, it is characterised in that the light source of described back light unit is blue-ray LED, indigo plant
Light OLED or blue light QLED.
15. 1 display devices, including quantum dot film, it is characterised in that described quantum dot film is arbitrary in claim 1 to 12
Quantum dot film described in Xiang.
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