CN106773319A - Display device and preparation method thereof - Google Patents
Display device and preparation method thereof Download PDFInfo
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- CN106773319A CN106773319A CN201710055171.8A CN201710055171A CN106773319A CN 106773319 A CN106773319 A CN 106773319A CN 201710055171 A CN201710055171 A CN 201710055171A CN 106773319 A CN106773319 A CN 106773319A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F122/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides or nitriles thereof
- C08F122/10—Esters
- C08F122/12—Esters of phenols or saturated alcohols
- C08F122/20—Esters containing oxygen in addition to the carboxy oxygen
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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Abstract
This application provides a kind of display device, including glass substrate, blue absorption layer and backlight module；The blue absorption layer is coated on the glass substrate, and between the glass substrate and the backlight module, for absorbing the blue light that the backlight module sends, to reduce injury of the blue light to eyes.Present invention also provides a kind of preparation method of display device.The application passes through to set blue absorption layer in a display device, to absorb the blue light that backlight module is sent, so as to reduce injury of the blue light to eyes.
Description
Technical field
The application is related to technical field of liquid crystal display, and in particular to a kind of display device that may filter that blue light and its preparation side
Method.
Background technology
As color gamut liquid crystal display high develops, quantum dot liquid crystal display (QD LCD) is becoming increasingly popular.QD LCD
Need to carry out luminescence generated by light to QD LCD using Blue backlight system, could realize that colour gamut high shows.But Blue backlight system
Include in the light for sending to the great blue light of human injury.Blue light is the high-energy light that wavelength is 380nm~480nm, and it can
Retina is reached to penetrate crystalline lens, the epithelial cell of retinal pigment is become feeble and die, cause photaesthesia cell to lack nutrient, so that
Cause irreversible vision impairment.
Therefore, how effective filter blue light, protect eyes are one of display screen industry problems urgently to be resolved hurrily.
The content of the invention
Problem for more than, the purpose of the application is to provide a kind of display device and preparation method thereof, by display
Blue absorption layer is set on substrate, the blue light that backlight module is sent is absorbed, to reduce the injury to eyes.
In order to solve problem present in background technology, this application provides a kind of display device, including glass substrate, indigo plant
Light absorbing zone and backlight module；The blue absorption layer is coated on the glass substrate, and located at the glass substrate and institute
State between backlight module, for absorbing the blue light that the backlight module sends, to reduce injury of the blue light to eyes.
The blue absorption layer includes azo dyes and polymerisable monomer, and the azo dyes are used to absorb blue light,
Its mass percent is 10~40%, and the polymerisable monomer is used to make azo dyes condense film forming, and its mass percent is
10~40%.
The formula of the azo dyes is
R1、R3、R4、R5、R8、R9For substituted or unsubstituted alkyl or hydroxyl or other, can be OH, CnH2n+1、
OCnH2n+1、CnH2n、OCnH2n, the group such as COOH it is therein one or more etc.；R2Can for substituted or unsubstituted alkyl or
Hydroxyl or azo molecules group, wherein, alkyl or hydroxyl can be OH, CnH2n+1、OCnH2n+1、CnH2n、OCnH2n, the base such as COOH
Group it is therein one or more etc.；R6、R7Can be SO3Na or other groups.
The display device also includes liquid crystal layer and lower polarizer；The liquid crystal layer located at the blue absorption layer with it is described
Between backlight module, the lower polarizer be located between the liquid crystal layer and the backlight module, and with the blue absorption layer
Relatively；The azo dyes are sulfonic acid ice color so that the blue absorption layer carries out orientation under ultraviolet light；Institute
Stating lower polarizer and being engaged with the blue absorption layer carries out orientation with to the liquid crystal layer.
The display device also includes quantum dot three primary colours array layer, and the quantum dot three primary colours array layer is located at the glass
Between glass substrate and the backlight module；The backlight module is blue light backlight module, for sending blue excitation light, so that institute
State the display of quantum dot three primary colours array layer colored.
The quantum dot three primary colours array layer is coated on the blue absorption layer, and away from the one of the glass substrate
Side, the quantum dot three primary colours array layer is to constitute red, green, blue chromatic filter layer, the quanta point material by quanta point material
One or more including CdX, PbX, ZnX, HgX, GaX, InX of mixture, wherein X are S, Se or Te.
The quantum dot three primary colours array layer is located at and is coated on the blue absorption layer, and located at the blue light backlight mould
Between group and the blue absorption layer, the quantum dot three primary colours array layer is to constitute red, green, blue liquid crystal by quanta point material
Layer, the quanta point material includes the mixture of one or more of CdX, PbX, ZnX, HgX, GaX, InX, and wherein X is S, Se
Or Te.
Present invention also provides a kind of preparation method of display device, including
The azo dyes that mass percent is 10~40% are taken with the polymerisable monomer that mass percent is 10~40%
It is well mixed, and be dissolved in organic solvent, so that blue light absorption mixed liquor is obtained；Wherein, the formula of the azo dyes is
R1、R3、R4、R5、R8、R9For substituted or unsubstituted alkyl or hydroxyl or other, can be OH, CnH2n+1、
OCnH2n+1、CnH2n、OCnH2n, the group such as COOH it is therein one or more etc.；R2Can for substituted or unsubstituted alkyl or
Hydroxyl or azo molecules group, wherein, alkyl or hydroxyl can be OH, CnH2n+1、OCnH2n+1、CnH2n、OCnH2n, the base such as COOH
Group it is therein one or more etc.；R6、R7Can be SO3Na or other groups；
The use of wavelength is 300 by blue light absorption mixed liquor coating on the glass substrate so that blue light absorption coating is obtained
Blue light absorption coating surface described in the ultraviolet light of~400nm, then the glass substrate is heat-treated, so that indigo plant must be obtained
Light absorbing zone；And
The glass substrate, the blue absorption layer are combined with liquid crystal layer, TFT substrate, backlight module, so that display is obtained
Device.
Wherein, prepare red, green, blue chromatic filter layer using quanta point material, the quanta point material include CdX, PbX,
The mixture of one or more of ZnX, HgX, GaX, InX, wherein X are S, Se or Te；" blue light absorption is mixed in step
Liquid coating is on the glass substrate with prepared blue light absorption coating " before, the red, green, blue chromatic filter layer is coated on the glass
On glass substrate.
Wherein, in step " by blue light absorption mixed liquor coating on the glass substrate with prepared blue light absorption coating "
Afterwards, chromatic filter layer is coated on the blue light absorption coating；The liquid crystal layer is the red, green, blue prepared with quanta point material
Liquid crystal layer, the quanta point material includes the mixture of one or more of CdX, PbX, ZnX, HgX, GaX, InX, and wherein X is
S, Se or Te.
, for backlight module, particularly blue light backlight module in display device, the blue light for sending is to eye for the embodiment of the present application
Eyeball injures larger problem, and proposition sets blue absorption layer on the glass substrate, to absorb the blue light that backlight module sends, its
In, blue absorption layer includes azo dyes, and its molecular structure is
R1、R3、R4、R5、R8、R9For substituted or unsubstituted alkyl or hydroxyl or other, can be OH, CnH2n+1、
OCnH2n+1、CnH2n、OCnH2n, the group such as COOH it is therein one or more etc.；R2Can for substituted or unsubstituted alkyl or
Hydroxyl or azo molecules group, wherein, alkyl or hydroxyl can be OH, CnH2n+1、OCnH2n+1、CnH2n、OCnH2n, the base such as COOH
Group it is therein one or more etc.；R6、R7Can be SO3Na or other groups.The azo dyes of the molecular structure can be effective
Ground absorbing wavelength is the blue light of 400~480nm, so as to significantly reduce injury of the display device to human eye.Using sulfonic acid idol
The blue absorption layer that nitrogen fuel is made is located between chromatic filter layer and liquid crystal layer, can be used as liquid crystal alignment layer so that display dress
Put while blue light is effectively absorbed, reduce the preparation section of both alignment layers, saved manufacturing cost.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the embodiment of the present application, below will be attached to what is used needed for embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for this area
For those of ordinary skill, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the display device of the application the first embodiment offer；
Trap curve map of the ice color for different wave length that Fig. 2 is provided for the application the first embodiment；
Fig. 3 is the structural representation of the display device that second embodiment of the application is provided；
Fig. 4 is the preparation method schematic diagram of the display device of the application the first embodiment offer；
Fig. 5 is the structural representation of the display device of the application the third embodiment offer；
Fig. 6 is the preparation method schematic diagram of the display device of the application the third embodiment offer.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme of the embodiment of the present application is carried out clear, complete
Ground description.
A kind of display device that the embodiment of the present application is provided, the application field of the display device includes but is not limited to liquid crystal
TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen etc..The application
Embodiment is illustrated by taking LCDs as an example to the application.
Fig. 1 is referred to, a kind of display device 10 that Fig. 1 is provided for the embodiment of the present application, including display base plate 11, TFT is (thin
Film transistor) substrate 13, backlight module 14.The display base plate 11 includes glass substrate 110 and blue absorption layer 111.It is described
Blue absorption layer 111 is coated on the glass substrate 110, and located at the glass substrate 110 and the backlight module 14 it
Between, for absorbing the blue light that the backlight module 14 sends, to reduce injury of the blue light to eyes.
In a kind of implementation method, display device 10 is quantum dot liquid crystal display, and the quantum dot liquid crystal display includes
Quantum dot three primary colours array layer, the quantum dot three primary colours array layer constitutes three primary colours pixel battle array by various sizes of quantum dot
Row (such as rgb pixels dot matrix).The backlight module 14 is blue light backlight module, and the blue light backlight module 14 includes LED light
Source 140, the LED light source 140 is used to provide blue excitation light, i.e. blue light.TFT substrate 13 is used to adjust going out for blue excitation light
Penetrate light intensity.It is colored that the quantum dot three primary colours array layer shows display device in the presence of blue excitation light.The quantum
Point three primary colours array layer is located between display base plate 11 and blue light backlight module 14, can be and the chromatic filter layer amount of combining to form
Son point chromatic filter layer, or quantum dot liquid crystal layer is combined to form with liquid crystal layer, or combine to form quantum with other structures layer
Point three primary colours pel array layer, under blue excitation light action, realizing the colored display of display device.
The blue excitation that blue light backlight module is sent just wave-length coverage be 380~480nm high-energy light, blue light can
Cornea and crystalline lens through retina and macular area are penetrated, eyes is produced a large amount of free radicals, cause macular area to be degenerated, so that
Cause damage of fundus.For this problem, the display base plate 11 that the present embodiment is provided includes glass substrate 110 and is coated on described
Blue absorption layer 111 on glass substrate 110, the blue absorption layer 111 sends for absorbing the blue light backlight module 14
Blue light, to reduce injury of the blue light to human eye.
Wherein, the blue absorption layer 111 includes azo dyes.Azo dyes are a kind of with excellent photo orientated
With the material of heat endurance.The basic structure of ice color is A-N=N-B, wherein, A and B represents different molecular structures.
The difference of the structure of number and A, B according to the azo group being embedded into ice color molecule, can be in larger light absorbs model
Enclose the maximum absorption wavelength of interior regulation ice color.It is the ice color conduct of (1) and/or (2) that the application uses general structure
Blue absorption layer.
R1、R3、R4、R5、R8、R9For substituted or unsubstituted alkyl or hydroxyl or other, can be OH, CnH2n+1、
OCnH2n+1、CnH2n、OCnH2n, the group such as COOH it is therein one or more etc.；R2Can for substituted or unsubstituted alkyl or
Hydroxyl or azo molecules group, wherein, alkyl or hydroxyl can be OH, CnH2n+1、OCnH2n+1、CnH2n、OCnH2n, the base such as COOH
Group it is therein one or more etc.；R6、R7Can be SO3Na or other groups.Fig. 2 is referred to, Fig. 2 is general structure (2)
Trap of the ice color for different wave length.As shown in Fig. 2 the ice color of the formula is for 400~480nm wavelength
Light has larger trap, i.e., the blue light of a length of 400~480nm of the absorbable reflection,many of ice color of described formula.With this
Film layer prepared by the ice color of class formula also can absorb the blue light of 400~480nm, so that part can be intercepted from backlight module
The blue light for sending, reduces injury of the display device to human eye.
The embodiment of the present application for the blue light that blue light backlight module in display device the sends problem larger to eye injury,
Propose and blue absorption layer is set in display base plate, by blue absorption layer located at glass substrate and quantum dot three primary colours array layer
Between, the colored display of display device is not interfered with not only, and, blue absorption layer includes azo dyes, its molecular structure
It is formula (1) and/or (2), it is 400~480nm that such azo dyes can effectively absorb the wavelength that blue light backlight module sends
Blue light, so as to effectively prevent injury of the blue light to human eye, protect eyes health.
The first embodiment：
The embodiment of the present application is explained present invention content by taking quantum dot liquid crystal display (QD LCD) as an example
State.
Fig. 1 is referred to, Fig. 1 is the structural representation of the display device 10 of the application the first embodiment offer.The bag
Include display base plate 11, quantum dot three primary colours array layer, liquid crystal layer 12, TFT (thin film transistor (TFT)) substrate 13 and blue light backlight module
14.Wherein, display base plate 11 includes glass substrate 110, the blue absorption layer 111 and coloured silk being coated on the glass substrate 110
Color filtering optical layer 112, chromatic filter layer 112 is coated on blue absorption layer 111, and away from the side of the glass substrate 110, institute
State quantum dot three primary colours array layer and combine to form quantum dot chromatic filter layer with chromatic filter layer 112.
The quantum dot chromatic filter layer mainly constitutes red-green-blue pel array by quanta point material, by using
Quanta point material is arranged in pairs or groups with Blue backlight, realizes that the red, green, blue of quantum dot chromatic filter layer, white sub-pixel region send respectively
Red, green, blue, white light.Quantum dot (Quantum Dots, QD), the nano particle by particle diameter between 1~20nm is constituted.By
In electronics and hole by quantum confinement, the continuous band structures of QD can launch by discrete independent level structure, therefore after being excited
Fluorescence.The luminescent spectrum of QD is mainly controlled by the particle size of QD, therefore transmitting can be realized by changing the particle diameter of QD
The regulation of spectrum.Meanwhile, QD light conversion efficiencies are very high, can improve the utilization rate of light, and the emission spectrum half-wave of QD is wide very narrow, temperature
Degree good stability.Quantum dot is compared as luminescent material with pigment or fluorescent material, its NTSC (National Television Selection)
Colour gamut can be about higher by 30%~70% than liquid crystal display panel NTSC in the market more than 100%.The quanta point material can be with
For：The mixture of CdX, PbX, ZnX, HgX, GaX, InX (X=S, Se, Te) and any of the above material.With traditional by colourama
The chromatic filter layer for hindering composition is compared, and the quantum dot chromatic filter layer can widen colour gamut, improves the utilization rate of light, and lifting is aobvious
Show brightness and transmitance.
The display device of the application the first embodiment offer is by setting quantum stippling color filtering optical layer and blue light backlight mould
Group, can widen colour gamut, improve the utilization rate of light, lift display brightness and transmitance；Additionally, blue light is set in display base plate inhaling
Layer is received, blue absorption layer includes that molecular structure is formula (1) and/or (2), the indigo plant that absorbable part sends from display device
Light, to reduce injury of the blue light to eyes.
Refer to Fig. 3, the application the first embodiment provides a kind of preparation method of display device, including
S101, take azo dyes that mass percent is 10~40% and mass percent be 10~40% it is polymerizable
Monomer is well mixed, and is dissolved in organic solvent, so that blue absorption layer mixed liquor is obtained.Wherein, mixing and course of dissolution can
Realized with by mechanical agitation.The azo dyes are used to absorb blue light.
In a kind of embodiment, the molecular structural formula of the azo dyes is：
Polymerisable monomer is used to condense azo dyes, in order to film forming.The polymerisable monomer include acrylate,
Acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin
In one or more of combination.
In a kind of embodiment, the molecular structural formula of the polymerisable monomer is：
The organic solvent is used to make azo dyes molecule be well-dispersed in polymerisable monomer, can be methyl alcohol, second
Alcohol, DMF (DMF), dimethyl sulfoxide (DMSO), acetonitrile, sulfolane, acetone, dimethylacetylamide, hexamethyl phosphinylidyne
At least one of amine.
S102, the mixed liquor is coated in the substrate surface, uses the ultraviolet light that wavelength is 300~400nm
The substrate surface, is heat-treated to the substrate, to obtain blue absorption layer.Specifically, by above-mentioned blue absorption layer
Mixed liquor is coated on the substrate surface film forming by modes such as evaporation or spin coatings, and thickness can be 50~300nm；Preferably,
Above-mentioned mixed liquor is coated on the substrate surface by evaporation mode so that the thickness of film forming is more uniform.Before coating may be used
Ultraviolet initiator is added in the blue absorption layer mixed liquor, the use of wavelength is 300~400nm's (preferably 365nm)
Substrate surface described in ultraviolet light, so that the coat precuring on the substrate, then the substrate is put into heating furnace
Heat treatment, so that the coat on the substrate fully solidifies, to obtain blue absorption layer.Then, applied on blue absorption layer
Quantum dot chromatic filter layer and cylindrical spacer (Photo spacer, PS) are covered, wherein, it is thick that PS is used for supporting case.The quantum
Point chromatic filter layer includes the red, green, blue chromatic filter layer prepared by quanta point material, is shown for colour.Red, green, blue is color
Color filtering optical layer is mainly made up of various sizes of quantum dot and photoresist, and red filter layer is by photic red-emitting quantum point and light
Photoresist is constituted, and green color filter is made up of photic green emitting quantum dot and photoresist, and blue color filter layer is by photic blue-light-emitting
Quantum dot and photoresist are constituted.Photoresist can be positive photoresist or negative photoresist, can by epoxy resin, acrylate,
Dispersant, light trigger and solvent etc. are constituted.Quanta point material can be：CdX, PbX, ZnX, HgX, GaX, InX (X=S, Se,
Te) and any of the above material mixture, quanta point material concentration can be 0.01%~3%.
S103, the display base plate is combined with liquid crystal layer, TFT substrate, blue light backlight module, so that display device is obtained.
Second embodiment：
Fig. 4 is referred to, Fig. 4 is the structural representation of the display device 10 that second embodiment of the application is provided.The bag
Include display base plate 11, quantum dot three primary colours array layer, liquid crystal layer 12, TFT (thin film transistor (TFT)) substrate 13 and blue light backlight module
14.The liquid crystal layer 12 is located between the blue light backlight module 14 and the display base plate 11.The liquid crystal layer 12 can be wrapped
Include blue phase liquid crystal.The quantum dot three primary colours array layer combines to form quantum dot liquid crystal layer with liquid crystal layer 12.
The quantum dot liquid crystal layer 12 is by red quantum dot liquid crystal layer, green quantum dot liquid crystal layer, blue quantum dot liquid crystal
The three primary colours array of layer composition.Quanta point material can be：The mixing of one or more of CdX, PbX, ZnX, HgX, GaX, InX
Thing, wherein X are S, Se or Te.The blue light of quantum dot liquid crystal layer 12 excite it is lower luminous, without chromatic filter layer, you can realize aobvious
The colored display of showing device.Compared with traditional liquid crystal layer, the quantum dot liquid crystal layer can widen colour gamut, improve the utilization of light
Rate, lifts display brightness and transmitance.
The display device that second embodiment of the application is provided is by setting quantum dot liquid crystal layer and blue light backlight module, energy
Widen colour gamut, improve the utilization rate of light, lift display brightness and transmitance；Blue absorption layer, blue light are set in display base plate
Absorbed layer includes that molecular structure is formula (1) and/or (2), the blue light that absorbable part sends from display device, to reduce indigo plant
Injury of the light to eyes；Quantum dot liquid crystal layer is combined with liquid crystal layer, without preparing chromatic filter layer, you can realize colored aobvious
Show, reduce the preparation technology of display device, save manufacturing cost.
Present invention also provides second preparation method of the display device of embodiment offer, provided with the first embodiment
Display device preparation method it is similar, difference is：Do not include coating the filter of quantum stippling color on blue absorption layer in S102
Photosphere, and liquid crystal layer is the quantum dot liquid crystal layer prepared by quanta point material.
The quantum dot liquid crystal layer includes the red, green, blue quantum dot liquid crystal layer prepared by quanta point material, aobvious for colour
Show.Red, green, blue quantum dot liquid crystal layer is main by various sizes of quantum dot and blue phase liquid crystal molecular composition, red filter layer by
Photic red-emitting quantum point and blue phase liquid crystal molecular composition, green color filter is by photic green emitting quantum dot and blue phase liquid crystal
Molecular composition, blue color filter layer is by photic blue-light-emitting quantum dot and blue phase liquid crystal molecular composition.Quanta point material can be
The mixture of one or more of CdX, PbX, ZnX, HgX, GaX, InX, wherein X are S, Se or Te.
The third embodiment：
Fig. 5 is referred to, the present embodiment is not limited to liquid crystal display by taking liquid crystal display as an example.
This application provides a kind of display device 10, including display base plate 11, backlight module 14 and located between the two
Liquid crystal layer 12, lower polarizer 113, TFT substrate 13.The display base plate 11 includes glass substrate 110 and located at the glass base
Chromatic filter layer 112 on plate 110.The display base plate 11 also includes blue absorption layer 111, and the blue absorption layer 111 is applied
It is overlying on the chromatic filter layer 112, and between the chromatic filter layer 112 and the liquid crystal layer 12, for absorbing
The blue light that backlight module 14 sends is stated, to reduce injury of the blue light to eyes.The lower polarizer 113 is located at the liquid crystal layer 12
It is between the backlight module 14 and relative with the blue absorption layer 111.Wherein, the blue absorption layer 111 includes azo
Class dyestuff, for absorbing blue light.
Preferably, the azo dyes are sulfonic acid azo dyes, and its molecular structural formula can be：
In the present embodiment, the blue absorption layer 111 is located between the chromatic filter layer 112 and the liquid crystal layer 12,
Sulfonic acid azo dyes cause that the blue absorption layer 111 carries out orientation under action of ultraviolet light so that the blue absorption layer
111 are engaged with lower polarizer 113 and carry out orientation with to the liquid crystal layer.
The application the third embodiment proposes and blue absorption layer is set in display base plate, wherein, blue absorption layer bag
Include sulfonic acid azo dyes, on the one hand, the blue light that wavelength is 400~480nm can be effectively absorbed, it is aobvious so as to significantly reduce
Injury of the showing device to human eye；On the other hand, sulfonic acid azo dyes can carry out orientation, blue absorption layer under action of ultraviolet light
Between chromatic filter layer and liquid crystal layer, being engaged with lower polarizer can be used as liquid crystal alignment layer so that display device is having
While effect absorbs blue light, the preparation section of both alignment layers is reduced, saved manufacturing cost.
Fig. 6 is referred to, this application provides a kind of preparation method of display device, including
S201, chromatic filter layer is prepared on the glass substrate；Take azo dyes that mass percent is 10~40% with
Mass percent is that 10~40% polymerisable monomer is well mixed, and is dissolved in organic solvent, so that blue absorption layer is obtained
Mixed liquor.Wherein, mixing and course of dissolution can be realized by mechanical agitation.The azo dyes are used to absorb blue light.
Preferably, the azo dyes are sulfonic acid azo dyes, and its molecular structural formula can be：
Polymerisable monomer is used to condense azo dyes, in order to film forming.The polymerisable monomer include acrylate,
Acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin
In one or more of combination.
In a kind of embodiment, the molecular structural formula of the polymerisable monomer is：
The organic solvent is used to make azo dyes molecule be well-dispersed in polymerisable monomer, can be methyl alcohol, second
Alcohol, DMF (DMF), dimethyl sulfoxide (DMSO), acetonitrile, sulfolane, acetone, dimethylacetylamide, hexamethyl phosphinylidyne
At least one of amine.
S202, the mixed liquor is coated in the color filter surfaces be obtained blue absorption layer, be using wavelength
Blue absorption layer described in the ultraviolet light of 400~500nm uses the ultraviolet lighting that wavelength is 300~400nm to carry out orientation
The blue light absorption layer surface is penetrated, then the glass substrate is heat-treated, to obtain display base plate.Specifically, will be above-mentioned
Blue absorption layer mixed liquor is coated on the color filter surfaces film forming by modes such as evaporation or spin coatings, and thickness can be 50
~300nm.Preferably, above-mentioned mixed liquor is coated on the substrate surface by spin coating mode, with ensure blue absorption layer into
Film is more smooth.Ultraviolet initiator can be added in the blue absorption layer mixed liquor before coating, using wavelength be 400~
Blue absorption layer described in the ultraviolet light of 500nm (preferably 450nm), to carry out orientation, is 300~400nm using wavelength
Substrate surface described in the ultraviolet light of (preferably 365nm), so that the blue absorption layer precuring, then the substrate is put
Enter heat treatment in heating furnace, so that the blue absorption layer on the substrate fully solidifies, to obtain display base plate.
S203, the display base plate is combined with liquid crystal layer, TFT substrate, lower polarizer, backlight module, so that display is obtained
Device.
The embodiment of the present application for the blue light that blue light backlight module in display device the sends problem larger to eye injury,
Propose and blue absorption layer is set in display base plate, wherein, blue absorption layer includes azo dyes, and its absorbing wavelength can root
Realized according to needing to select different azo materials.The application proposes to prepare indigo plant using the azo dyes of formula (1) and/or (2)
Light absorbing zone, can effectively absorb the blue light that wavelength is 400~480nm, so as to significantly reduce display device to human eye
Injury；Blue absorption layer is located between chromatic filter layer and liquid crystal layer as obtained in sulfonic acid azo dyes, with lower polarizer phase
Cooperation can be used as liquid crystal alignment layer so that display device reduces the preparation section of both alignment layers while blue light is effectively absorbed,
Manufacturing cost is saved.
In sum, although the application is disclosed above with preferred embodiment, but the preferred embodiment and be not used to limitation
The application, one of ordinary skill in the field is not being departed from spirit and scope, can make various changes and profit
Adorn, therefore the protection domain of the application is defined by the scope that claim is defined.
The above is the preferred embodiment of the application, it is noted that for those skilled in the art
For, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications are also considered as
The protection domain of the application.
Claims (10)
1. a kind of display device, it is characterised in that including glass substrate, blue absorption layer and backlight module；The blue light absorption
Layer is coated on the glass substrate, and between the glass substrate and the backlight module, for absorbing the backlight
The blue light that module sends, to reduce injury of the blue light to eyes.
2. a kind of display device according to claim 1, it is characterised in that the blue absorption layer includes azo dyes
And polymerisable monomer, for absorbing blue light, its mass percent is 10~40%, the polymerisable monomer to the azo dyes
For making azo dyes condense film forming, its mass percent is 10~40%.
3. a kind of display device according to claim 2, it is characterised in that the formula of the azo dyes is
R1、R3、R4、R5、R8、R9For substituted or unsubstituted alkyl or hydroxyl or other, can be OH, CnH2n+1、OCnH2n+1、
CnH2n、OCnH2n, the group such as COOH it is therein one or more etc.；R2Can for substituted or unsubstituted alkyl or hydroxyl or
Azo molecules group, wherein, alkyl or hydroxyl can be OH, CnH2n+1、OCnH2n+1、CnH2n、OCnH2n, the group such as COOH wherein
One or more etc.；R6、R7Can be SO3Na or other groups.
4. a kind of display device according to claim 3, it is characterised in that the display device also include liquid crystal layer and under
Polarizer；The liquid crystal layer is located between the blue absorption layer and the backlight module, and the lower polarizer is located at the liquid
It is between crystal layer and the backlight module and relative with the blue absorption layer；The azo dyes are sulfonic acid ice color, are made
Obtain the blue absorption layer carries out orientation under ultraviolet light；The lower polarizer is engaged with right with the blue absorption layer
The liquid crystal layer carries out orientation.
5. a kind of display device according to claim 3, it is characterised in that the display device also includes the base of quantum dot three
Color array layer, the quantum dot three primary colours array layer is located between the glass substrate and the backlight module；The backlight mould
Group is blue light backlight module, for sending blue excitation light, so that quantum dot three primary colours array layer display is colored.
6. a kind of display device according to claim 5, it is characterised in that the quantum dot three primary colours array layer is coated on
On the blue absorption layer, and away from the side of the glass substrate, the quantum dot three primary colours array layer is by quantum dot material
Material composition red, green, blue chromatic filter layer, the quanta point material includes one kind or many of CdX, PbX, ZnX, HgX, GaX, InX
The mixture planted, wherein X is S, Se or Te.
7. a kind of display device according to claim 5, it is characterised in that the quantum dot three primary colours array layer is located at applying
It is overlying on the blue absorption layer, and between the blue light backlight module and the blue absorption layer, the quantum dot three
Primary colours array layer is to constitute red, green, blue liquid crystal layer by quanta point material, the quanta point material include CdX, PbX, ZnX, HgX,
The mixture of one or more of GaX, InX, wherein X are S, Se or Te.
8. a kind of preparation method of display device, it is characterised in that including
The azo dyes that mass percent is 10~40% are taken to mix with the polymerisable monomer that mass percent is 10~40%
Uniformly, and it is dissolved in organic solvent, so that blue light absorption mixed liquor is obtained；Wherein, the formula of the azo dyes is
R1、R3、R4、R5、R8、R9For substituted or unsubstituted alkyl or hydroxyl or other, can be OH, CnH2n+1、OCnH2n+1、
CnH2n、OCnH2n, the group such as COOH it is therein one or more etc.；R2Can for substituted or unsubstituted alkyl or hydroxyl or
Azo molecules group, wherein, alkyl or hydroxyl can be OH, CnH2n+1、OCnH2n+1、CnH2n、OCnH2n, the group such as COOH wherein
One or more etc.；R6、R7Can be SO3Na or other groups；
By blue light absorption mixed liquor coating on the glass substrate so that blue light absorption coating is obtained, using wavelength be 300~
Blue light absorption coating surface described in the ultraviolet light of 400nm, then the glass substrate is heat-treated, so that blue light must be obtained
Absorbed layer；And
The glass substrate, the blue absorption layer are combined with liquid crystal layer, TFT substrate, backlight module, is filled so that display is obtained
Put.
9. the preparation method of a kind of display device according to claim 8, it is characterised in that prepared using quanta point material
Red, green, blue chromatic filter layer, the quanta point material includes the mixed of one or more of CdX, PbX, ZnX, HgX, GaX, InX
Compound, wherein X are S, Se or Te；
Before step " by blue light absorption mixed liquor coating on the glass substrate with prepared blue light absorption coating ", will be described
Red, green, blue chromatic filter layer is coated on the glass substrate.
10. the preparation method of a kind of display device according to claim 8, it is characterised in that in step " by the blue light
Mixed liquor coating is absorbed on the glass substrate so that blue light absorption coating is obtained " after, coated on the blue light absorption coating colored
Filter layer；The liquid crystal layer be with quanta point material prepare red, green, blue liquid crystal layer, the quanta point material include CdX,
The mixture of one or more of PbX, ZnX, HgX, GaX, InX, wherein X are S, Se or Te.
Priority Applications (2)
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| CN201710055171.8A CN106773319B (en) | 2017-01-24 | 2017-01-24 | Display device and preparation method thereof |
| PCT/CN2017/073708 WO2018137262A1 (en) | 2017-01-24 | 2017-02-15 | Display apparatus and preparation method therefor |
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| CN201710055171.8A CN106773319B (en) | 2017-01-24 | 2017-01-24 | Display device and preparation method thereof |
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| CN110379301A (en) * | 2019-01-11 | 2019-10-25 | 友达光电股份有限公司 | Quantum dot diaphragm assembly and preparation method thereof |
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| US10642087B2 (en) | 2014-05-23 | 2020-05-05 | Eyesafe, Llc | Light emission reducing compounds for electronic devices |
| US11810532B2 (en) | 2018-11-28 | 2023-11-07 | Eyesafe Inc. | Systems for monitoring and regulating harmful blue light exposure from digital devices |
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Also Published As
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| CN106773319B (en) | 2019-09-27 |
| WO2018137262A1 (en) | 2018-08-02 |
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