CN105717723A - Blue phase liquid crystal display device and manufacturing method thereof - Google Patents
Blue phase liquid crystal display device and manufacturing method thereof Download PDFInfo
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- CN105717723A CN105717723A CN201610248577.3A CN201610248577A CN105717723A CN 105717723 A CN105717723 A CN 105717723A CN 201610248577 A CN201610248577 A CN 201610248577A CN 105717723 A CN105717723 A CN 105717723A
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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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
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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
- G02F1/133621—Illuminating devices providing coloured light
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13775—Polymer-stabilized liquid crystal layers
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13793—Blue phases
Abstract
The invention provides a blue phase liquid crystal display device and a manufacturing method thereof. The blue phase liquid crystal display device provided by the invention is characterized in that a quantum dot is doped in a blue phase liquid crystal layer, the grain size of the quantum dot is nanometer-scale, the temperature range of blue phase liquid crystal can be widened, the hysteresis can be reduced and the quantum dot can realize photoluminescence so as to form colorful display. The blue backlight can be applied to the display device, so that the backlight use ratio can be effectively increased, the color gamut of the panel can be promoted and the backlight can be applied to the aspects of quick display and 3D display. According to the manufacturing method for the blue phase liquid crystal display device provided by the invention, the manufacturing difficulty is low, the manufactured blue phase liquid crystal display device has wide blue phase temperature range, the alignment layer and the colorful light-filtering layer are not required, and the blue backlight can be applied to 3D display.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of blue phase liquid crystal display device and preparation method thereof.
Background technology
Development along with Display Technique, liquid crystal display (LiquidCrystalDisplay, etc. LCD) flat display apparatus is because having that high image quality, power saving, fuselage be thin and the advantage such as applied range, and it is widely used in the various consumption electronic products such as mobile phone, TV, personal digital assistant, digital camera, notebook computer, desk computer, become the main flow in display device.
Liquid crystal indicator major part on existing market is backlight liquid crystal display, and it includes display panels and backlight module (backlightmodule).The operation principle of display panels is placement liquid crystal molecule in the middle of the glass substrate that two panels is parallel, many tiny electric wires vertically and horizontally are had in the middle of two panels glass substrate, control liquid crystal molecule by whether being energized and change direction, the light of backlight module is reflected generation picture.
Usual display panels is by color film (CF, ColorFilter) substrate, thin film transistor (TFT) (TFT, ThinFilmTransistor) substrate, the liquid crystal (LC, LiquidCrystal) being sandwiched between color membrane substrates and thin film transistor base plate and fluid sealant frame (Sealant) composition.
Blue phase liquid crystal is a kind of Thermodynamically stable phase that cholesteric liquid crystal exists when being slightly less than clearing point, and it is the phase of a narrow temperature interval between cholesteric phase and isotropic phase, and phase is stable, owing to typically exhibiting blueness, therefore is called blue phase.With other liquid crystalline phase ratio, blue phase liquid crystal has the characteristic of following excellence: (1) has the response time (2) of sub-millisecond and do not need both alignment layers, can be greatly simplified processing technology process；(3) being optically isotropic during details in a play not acted out on stage, but told through dialogues, visual angle is big.But, there is a lot of shortcoming in blue phase liquid crystal itself, for instance: temperature range is narrow, general 1-2 DEG C；Driving voltage is high, powers up and is difficult to return to original state, namely there is hysteresis, be difficult in practical application.
In order to widen the temperature range of blue phase liquid crystal, the method that generally can pass through polymer stabilizing blue phase liquid crystal, this method needs to add polymerisable monomer in liquid crystal, ultra-vioket radiation polymerization is carried out when being heated to blue phase temperature range, can largely widen the temperature range of blue phase, but temperature accuracy is required significantly high by this kind of method, need to control in ± 1 DEG C even less temperature range, it is achieved difficulty is very big.
Another is to increase a certain proportion of nanoparticle in blue phase liquid crystal, can effectively widen the existence temperature range of blue phase liquid crystal, this kind of method can in the temperature range to a certain degree controlling blue phase, blue phase liquid crystal temperature range is made to widen more than 10 DEG C, the problem that the front temperature range of polymer stabilizing blue phase liquid crystal polymerization is narrow can be solved, reduce processing procedure difficulty, hysteresis can be reduced, it is achieved zero hysteresis effects simultaneously.
Quantum dot (QuantumDots, QD), is properly termed as again nanocrystalline, is made up of particle diameter nano-particle between 1～20nm；Owing to electronics and hole are by quantum confinement, QD continuous print band structure, can emitting fluorescence after being therefore excited by discrete independent level structure；The spectrum that occurs of QD is mainly controlled by the size of QD, therefore can realize the adjustment of emission spectrum by changing the particle diameter of QD；Meanwhile, QD light conversion efficiency is significantly high, it is possible to improving the utilization rate of light, the emission spectrum half-wave width of QD is very narrow, and temperature stability is good.Quantum dot is compared as luminescent material with pigment or fluorescent material, its NTSC (National Television Selection) colour gamut can more than 100%, about higher by 30%～70% than display panels NTSC in the market.
Summary of the invention
It is an object of the invention to provide a kind of blue phase liquid crystal display device, blue phase liquid crystal temperature range can be widened, lower magnetic hysteresis.
The present invention also aims to provide the manufacture method of a kind of blue phase liquid crystal display device, processing procedure difficulty is low, and the blue phase liquid crystal display device prepared has wide blue phase temperature range.
For achieving the above object, the present invention provides a kind of blue phase liquid crystal display device, including blue-phase liquid crystal display panel and the backlight module being located at described blue-phase liquid crystal display panel side, described blue-phase liquid crystal display panel includes the upper substrate and the infrabasal plate that are oppositely arranged and is located at the blue phase liquid crystal layer between described upper substrate and infrabasal plate；
Described infrabasal plate includes infrabasal plate body and is located at infrabasal plate body towards several barricade on blue phase liquid crystal layer side, several barricade described surrounds several pixel groove on described infrabasal plate body, described several pixel groove includes several red pixel groove, several green pixel groove and several blue pixel groove, seamless applying between a side surface of described blue phase liquid crystal layer on the top end surface of several barricade described and described upper substrate；
Red quantum point blue phase liquid crystal layer that described blue phase liquid crystal layer includes being located in described red pixel groove, the green quantum being located in described green pixel groove fill enamel phase liquid crystal layer and the blue quantum of being located in described blue pixel groove is filled enamel phase liquid crystal layer；Described red quantum point blue phase liquid crystal layer includes blue phase liquid crystal, polymer, chiral agent and red quantum point；Described green quantum phase liquid crystal layer of filling enamel includes blue phase liquid crystal, polymer, chiral agent and green quantum dot；Described blue quantum phase liquid crystal layer of filling enamel includes blue phase liquid crystal, polymer, chiral agent and blue quantum dot.
In described red green blue quantum dot blue phase liquid crystal layer, the mass percent of described polymer is 5-25%, and the mass percent of described red green blue quantum dot is 0.01-2%, and the mass percent of described chiral agent is 3-15%.
Described polymer is polymerized by polymerisable monomer, and described polymerisable monomer includes one or more the combination in acrylate, acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin；
Described red green blue quantum dot includes one or more the mixture in CdX, PbX, ZnX, HgX, GaX and InX or the nucleocapsid structure of the formation of the multiple combination in CdX, PbX, ZnX, HgX, GaX and InX, and wherein X is S, Se or Te；
Described chiral agent is isosorbide class chiral agent.
Described backlight module includes blue-light source.
Described infrabasal plate also includes the blue color filter layer being located on described infrabasal plate body, and described blue color filter layer lays respectively at described red pixel groove and green pixel bottom portion of groove and is positioned at bottom the barricade of described red pixel groove and green pixel recessed circumferential.
The present invention also provides for the manufacture method of a kind of blue phase liquid crystal display device, comprises the steps:
Step 1, red quantum point blue phase liquid crystal material, green quantum is provided to fill enamel phase liquid crystal material and blue quantum is filled enamel phase liquid crystal material；Described red quantum point blue phase liquid crystal material includes liquid crystal, chiral agent, polymerisable monomer and red quantum point；Described green quantum phase liquid crystal material of filling enamel includes liquid crystal, chiral agent, polymerisable monomer and green quantum dot；Described blue quantum phase liquid crystal material of filling enamel includes liquid crystal, chiral agent, polymerisable monomer and blue quantum dot；
Step 2, offer upper substrate and infrabasal plate, described infrabasal plate includes infrabasal plate body and several barricade being located on infrabasal plate body, several barricade described surrounds several pixel groove on described infrabasal plate body, and described several pixel grooves include several red pixel groove, several green pixel groove and several blue pixel groove；
Step 3, in described red pixel groove, add red quantum point blue phase liquid crystal material, in described green pixel groove, add green quantum fill enamel phase liquid crystal material, in described blue pixel groove, add blue quantum fill enamel phase liquid crystal material；
By described upper substrate and infrabasal plate para-position laminating, the top end surface of several barricade on described infrabasal plate and described upper substrate realize between a side surface of described blue phase liquid crystal layer seamless applying, form a blue-phase liquid crystal display panel；Described blue-phase liquid crystal display panel is heated, by red, green, blue quantum is filled enamel after phase liquid crystal material is heated to clearing point and is lowered the temperature, cool to when liquid crystal transfers blue phase to and keep temperature constant, carry out irradiation under ultraviolet ray, make red, green, blue quantum is filled enamel the polymerisable monomer polymerization in phase liquid crystal material, form polymer, obtain red quantum point blue phase liquid crystal layer, green quantum is filled enamel phase liquid crystal layer, and blue quantum fills enamel phase liquid crystal layer, thus obtaining including several red quantum point blue phase liquid crystal layer, several green quantum are filled enamel phase liquid crystal layer, and several blue quantum fills enamel the blue phase liquid crystal layer of phase liquid crystal layer；
Step 4, offer backlight module, after being combined with blue-phase liquid crystal display panel by described backlight module, obtain blue phase liquid crystal display device.
In described red green blue quantum dot blue phase liquid crystal material, the mass percent of described polymerisable monomer is 5-25%, and the mass percent of described red green blue quantum dot is 0.01-2%, and the mass percent of described chiral agent is 3-15%；
Described liquid crystal is nematic liquid crystal；
Described polymerisable monomer includes one or more the combination in acrylate, acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin；
Described red green blue quantum dot includes one or more the mixture in CdX, PbX, ZnX, HgX, GaX and InX or the nucleocapsid structure of the formation of the multiple combination in CdX, PbX, ZnX, HgX, GaX and InX, and wherein X is S, Se or Te；
Described chiral agent is isosorbide class chiral agent.
In described step 3, from clearing point, red, green, blue colo(u)r specification point blue phase liquid crystal material is cooled to the cooling rate blue phase process is 0.01 DEG C/min-2 DEG C/min；Described ultraviolet light is irradiated from upper substrate side or infrabasal plate side；Described ultraviolet light is common ultraviolet or polarized ultraviolet.
Described backlight module includes blue-light source.
In described step 2, described infrabasal plate also includes the blue color filter layer being located on described infrabasal plate body, and described blue color filter layer lays respectively at described red pixel groove and green pixel bottom portion of groove and is positioned at bottom the barricade of described red pixel groove and green pixel recessed circumferential.
Beneficial effects of the present invention: the blue phase liquid crystal display device of the present invention, doped with quantum dot in its blue phase liquid crystal layer, the particle diameter of described quantum dot is Nano grade, blue phase liquid crystal temperature range can be widened, lowering magnetic hysteresis, described quantum dot can realize luminescence generated by light simultaneously, it is achieved colored display；Described display device uses Blue backlight, can be effectively improved backlight utilization ratio and improve the colour gamut of panel, can be used for the aspects such as quickly display and 3D show.The manufacture method of the blue phase liquid crystal display device of the present invention, processing procedure difficulty is low, and the blue phase liquid crystal display device prepared has wide blue phase temperature range, it is not necessary to both alignment layers and chromatic filter layer, uses Blue backlight, can be used for 3D display aspect.
In order to be able to be further understood that inventive feature and technology contents, refer to the detailed description below in connection with the present invention and accompanying drawing, but accompanying drawing only provides reference and use is described, be not used for the present invention is any limitation as.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, technical scheme and other beneficial effect will be made apparent.
In accompanying drawing,
Fig. 1 is the structural representation of the first embodiment of the blue phase liquid crystal display device of the present invention；
Fig. 2 is the schematic flow diagram of the manufacture method of the first embodiment of the blue phase liquid crystal display device of the present invention；
Fig. 3 is the schematic diagram of the step 2 of the manufacture method of the first embodiment of the blue phase liquid crystal display device of the present invention；
Fig. 4 is the schematic diagram of the step 3 of the manufacture method of the first embodiment of the blue phase liquid crystal display device of the present invention；
Fig. 5 is the structural representation of the second embodiment of the blue phase liquid crystal display device of the present invention；
Fig. 6 is the schematic flow diagram of the manufacture method of the second embodiment of the blue phase liquid crystal display device of the present invention.
Detailed description of the invention
For further setting forth the technological means and effect thereof that the present invention takes, it is described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
Fig. 1 is the structural representation of the first embodiment of the blue phase liquid crystal display device of the present invention, described blue phase liquid crystal display device includes blue-phase liquid crystal display panel 50 and is located at the backlight module 60 of described blue-phase liquid crystal display panel 50 side, and described blue-phase liquid crystal display panel 50 includes the upper substrate 10 and the infrabasal plate 20 that are oppositely arranged and is located at the blue phase liquid crystal layer 40 between described upper substrate 10 and infrabasal plate 20；
Described infrabasal plate 20 includes infrabasal plate body 21 and several barricade 22 being located at infrabasal plate body 21 on blue phase liquid crystal layer 40 side, several barricade 22 described surrounds several pixel groove 30 on described infrabasal plate body 21, described several pixel groove 30 includes several red pixel groove 31, several green pixel groove 32 and several blue pixel groove 33, seamless applying between a side surface of described blue phase liquid crystal layer 40 on the top end surface of several barricade 22 described and described upper substrate 10；
Red quantum point blue phase liquid crystal layer 41 that described blue phase liquid crystal layer 40 includes being located in described red pixel groove 31, the green quantum being located in described green pixel groove 32 fill enamel phase liquid crystal layer 42 and the blue quantum of being located in described blue pixel groove 33 is filled enamel phase liquid crystal layer 43；Described red quantum point blue phase liquid crystal layer 41 includes blue phase liquid crystal, polymer, chiral agent and red quantum point；Described green quantum phase liquid crystal layer 42 of filling enamel includes blue phase liquid crystal, polymer, chiral agent and green quantum dot；Described blue quantum phase liquid crystal layer 43 of filling enamel includes blue phase liquid crystal, polymer, chiral agent and blue quantum dot.
Concrete, described polymer is network-like, described polymer and red green blue quantum dot be gathered in blue phase liquid crystal to wrong position, make the phase of blue phase liquid crystal remain stable for, thus widening the temperature range of blue liquid crystal.
Concrete, in described red green blue quantum dot blue phase liquid crystal layer 41/42/43, the mass percent of described polymer is 5-25%, and the mass percent of described red green blue quantum dot is 0.01-2%, and the mass percent of described chiral agent is 3-15%.
Concrete, described polymer is polymerized by polymerisable monomer, and described polymerisable monomer includes one or more the combination in acrylate, acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin.Wherein, described epoxy resin can be fatty amines epoxy resin.
Preferably, described polymerisable monomer is:
Concrete, described red green blue quantum dot includes one or more the mixture in CdX, PbX, ZnX, HgX, GaX and InX or the nucleocapsid structure of the formation of the multiple combination in CdX, PbX, ZnX, HgX, GaX and InX, and wherein X is S, Se or Te.
Concrete, described red green blue quantum dot is of a size of 1-30nm.
Concrete, described chiral agent is isosorbide class chiral agent.
Preferably, described chiral agent is:
Concrete, described upper substrate 10 is thin-film transistor array base-plate, has electrode structure.
Concrete, described barricade 22 is formed by photoresistance separation material (Photospacer, PS) or black matrix" (Blackmatrix, BM), described photoresistance separation material is thick for the box providing blue-phase liquid crystal display panel 50, and described black matrix" is used for preventing pixel light leak.
Concrete, described backlight module 60 includes blue-light source.
Concrete, owing to blue phase liquid crystal is isotropic structure, generation optical birefringence can be powered up, therefore blue phase liquid crystal display device is without using both alignment layers.
Refer to Fig. 2, for the manufacture method of first embodiment of the blue phase liquid crystal display device of the present invention, comprise the steps:
Step 1, red quantum point blue phase liquid crystal material, green quantum is provided to fill enamel phase liquid crystal material and blue quantum is filled enamel phase liquid crystal material；Described red quantum point blue phase liquid crystal material includes liquid crystal, chiral agent, polymerisable monomer and red quantum point；Described green quantum phase liquid crystal material of filling enamel includes liquid crystal, chiral agent, polymerisable monomer and green quantum dot；Described blue quantum phase liquid crystal material of filling enamel includes liquid crystal, chiral agent, polymerisable monomer and blue quantum dot.
Concrete, in described red green blue quantum dot blue phase liquid crystal material, the mass percent of described polymerisable monomer is 5-25%, and the mass percent of described red green blue quantum dot is 0.01-2%, and the mass percent of described chiral agent is 3-15%.
Concrete, in described red green blue quantum dot blue phase liquid crystal material, described liquid crystal is nematic liquid crystal, and described chiral agent is for by nematic liquid crystal induced synthesis cholesteric liquid crystal.
Concrete, described polymerisable monomer includes one or more the combination in acrylate, acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin.Wherein, described epoxy resin can be fatty amines epoxy resin.
Preferably, described polymerisable monomer is:
Concrete, described red green blue quantum dot includes one or more the mixture in CdX, PbX, ZnX, HgX, GaX and InX or the nucleocapsid structure of the formation of the multiple combination in CdX, PbX, ZnX, HgX, GaX and InX, and wherein X is S, Se or Te.
Concrete, described red green blue quantum dot is of a size of 1-30nm.
Concrete, described chiral agent is isosorbide class chiral agent.Preferably, described chiral agent is:
Concrete, described red green blue quantum dot blue phase liquid crystal material also includes light trigger, and the mass percent of described light trigger is 0.1-1%, and described light trigger can be commercial light trigger Irgacure651, and its structure is:
Concrete, in described step 1, by adding red green blue quantum dot in red green blue quantum dot blue phase liquid crystal material, the temperature range of blue phase liquid crystal can be widened, solve the problem that the front blue phase liquid crystal temperature range of polymerisable monomer polymerization is narrow, reducing processing procedure difficulty, can realize colored display simultaneously, the liquid crystal indicator prepared is without using chromatic filter layer.
Step 2, as shown in Figure 3, upper substrate 10 and infrabasal plate 20 are provided, described infrabasal plate 20 includes infrabasal plate body 21 and several barricade 22 being located on infrabasal plate body 21, several barricade 22 described surrounds several pixel groove 30 on described infrabasal plate body 21, and described several pixel grooves 30 include several red pixel groove 31, several green pixel groove 32 and several blue pixel groove 33.
Concrete, described upper substrate 10 is thin-film transistor array base-plate, and its concrete structure belongs to the state of the art, no longer illustrates herein.
Concrete, described barricade 22 is formed by photoresistance separation material (Photospacer, PS) or black matrix" (Blackmatrix, BM), described photoresistance separation material is thick for the box providing blue-phase liquid crystal display panel 50, and described black matrix" is used for preventing pixel light leak.
Step 3, as shown in Figure 4, red quantum point blue phase liquid crystal material is added in described red pixel groove 31, in described green pixel groove 32, add green quantum fill enamel phase liquid crystal material, described blue pixel groove 33 in, add blueness quantum fill enamel phase liquid crystal material；
By described upper substrate 10 and infrabasal plate 20 para-position laminating, the top end surface of several barricade 22 on described infrabasal plate 20 and described upper substrate 10 realize between a side surface of described blue phase liquid crystal layer 40 seamless applying, form a blue-phase liquid crystal display panel 50；Described blue-phase liquid crystal display panel 50 is heated, by red, green, blue quantum is filled enamel after phase liquid crystal material is heated to clearing point and is lowered the temperature, cool to when liquid crystal transfers blue phase to and keep temperature constant, carry out ultraviolet light (UV) to irradiate, make red, green, blue quantum is filled enamel the polymerisable monomer polymerization in phase liquid crystal material, form polymer, obtain red quantum point blue phase liquid crystal layer 41, green quantum is filled enamel phase liquid crystal layer 42, and blue quantum fills enamel phase liquid crystal layer 43, thus obtaining including several red quantum point blue phase liquid crystal layer 41, several green quantum are filled enamel phase liquid crystal layer 42, and several blue quantum fills enamel the blue phase liquid crystal layer 40 of phase liquid crystal layer 43.
Concrete, described polymer is network-like, described polymer and red green blue quantum dot be gathered in blue phase liquid crystal to wrong position, make the phase of blue phase liquid crystal remain stable for, thus widening the temperature range of blue liquid crystal.
Concrete, in described step 3, from clearing point, red, green, blue colo(u)r specification point blue phase liquid crystal material is cooled to the cooling rate blue phase process is 0.01 DEG C/min-2 DEG C/min.
Concrete, in described step 3, described ultraviolet light can be irradiated from upper substrate 10 side or infrabasal plate 20 side；Described ultraviolet light can be common ultraviolet or polarized ultraviolet.
Step 4, refer to Fig. 1, it is provided that backlight module 60, after being combined with blue-phase liquid crystal display panel 50 by described backlight module 60, obtain blue phase liquid crystal display device.
Concrete, described backlight module 60 includes blue-light source.
Fig. 5 is the structural representation of the second embodiment of the blue phase liquid crystal display device of the present invention, compared with the structure of the first embodiment of blue phase liquid crystal display device, being distinguished by of the blue phase liquid crystal display device of this second embodiment, described infrabasal plate 20 also includes the blue color filter layer 80 being located on described infrabasal plate body 21, described blue color filter layer 80 lays respectively at bottom described red pixel groove 31 and green pixel groove 32, and it is positioned at bottom the barricade 22 of described red pixel groove 31 and green pixel groove 32 periphery, non-switched blue light after described blue color filter layer 80 is used for being filtered through red quantum point blue phase liquid crystal layer 41 and green quantum is filled enamel phase liquid crystal layer 42, improve excitation, widen colour gamut.
Fig. 6 is the schematic flow diagram of the manufacture method of the second embodiment of the blue phase liquid crystal display device of the present invention, compared with the manufacture method of the first embodiment of blue phase liquid crystal display device, being distinguished by of the manufacture method of the second embodiment of this blue phase liquid crystal display device, in described step 2, described infrabasal plate 20 also includes the blue color filter layer 80 being located on described infrabasal plate body 21, described blue color filter layer 80 lays respectively at bottom described red pixel groove 31 and green pixel groove 32, and be positioned at bottom the barricade 22 of described red pixel groove 31 and green pixel groove 32 periphery.
In sum, the present invention provides a kind of blue phase liquid crystal display device and preparation method thereof.The blue phase liquid crystal display device of the present invention, doped with quantum dot in its blue phase liquid crystal layer, the particle diameter of described quantum dot is Nano grade, can widen blue phase liquid crystal temperature range, lowers magnetic hysteresis, and described quantum dot can realize luminescence generated by light simultaneously, it is achieved colored display；Described display device uses Blue backlight, can be effectively improved backlight utilization ratio and improve the colour gamut of panel, can be used for the aspects such as quickly display and 3D show.The manufacture method of the blue phase liquid crystal display device of the present invention, processing procedure difficulty is low, and the blue phase liquid crystal display device prepared has wide blue phase temperature range, it is not necessary to both alignment layers and chromatic filter layer, uses Blue backlight, can be used for 3D display aspect.
The above, for the person of ordinary skill of the art, it is possible to conceive according to technical scheme and technology and make other various corresponding changes and deformation, and all these change and deform the protection domain that all should belong to the claims in the present invention.
Claims (10)
1. a blue phase liquid crystal display device, it is characterized in that, including blue-phase liquid crystal display panel (50) and the backlight module (60) being located at described blue-phase liquid crystal display panel (50) side, described blue-phase liquid crystal display panel (50) includes the upper substrate (10) that is oppositely arranged and infrabasal plate (20) and the blue phase liquid crystal layer (40) being located between described upper substrate (10) and infrabasal plate (20)；
Described infrabasal plate (20) includes infrabasal plate body (21) and is located at infrabasal plate body (21) towards several barricade (22) on blue phase liquid crystal layer (40) side, described several barricade (22) surrounds several pixel groove (30) on described infrabasal plate body (21), described several pixel groove (30) includes several red pixel groove (31), several green pixel grooves (32), and several blue pixel groove (33), on the top end surface of described several barricade (22) and described upper substrate (10) seamless applying between a side surface of described blue phase liquid crystal layer (40)；
Red quantum point blue phase liquid crystal layer (41) that described blue phase liquid crystal layer (40) includes being located in described red pixel groove (31), the green quantum being located in described green pixel groove (32) fill enamel phase liquid crystal layer (42) and the blue quantum of being located in described blue pixel groove (33) is filled enamel phase liquid crystal layer (43)；Described red quantum point blue phase liquid crystal layer (41) includes blue phase liquid crystal, polymer, chiral agent and red quantum point；Described green quantum phase liquid crystal layer (42) of filling enamel includes blue phase liquid crystal, polymer, chiral agent and green quantum dot；Described blue quantum phase liquid crystal layer (43) of filling enamel includes blue phase liquid crystal, polymer, chiral agent and blue quantum dot.
2. blue phase liquid crystal display device as claimed in claim 1, it is characterized in that, in described red green blue quantum dot blue phase liquid crystal layer (41/42/43), the mass percent of described polymer is 5-25%, the mass percent of described red green blue quantum dot is 0.01-2%, and the mass percent of described chiral agent is 3-15%.
3. blue phase liquid crystal display device as claimed in claim 1, it is characterized in that, described polymer is polymerized by polymerisable monomer, and described polymerisable monomer includes one or more the combination in acrylate, acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin；
Described red green blue quantum dot includes one or more the mixture in CdX, PbX, ZnX, HgX, GaX and InX or the nucleocapsid structure of the formation of the multiple combination in CdX, PbX, ZnX, HgX, GaX and InX, and wherein X is S, Se or Te；
Described chiral agent is isosorbide class chiral agent.
4. blue phase liquid crystal display device as claimed in claim 1, it is characterised in that described backlight module (60) includes blue-light source.
5. blue phase liquid crystal display device as claimed in claim 4, it is characterized in that, described infrabasal plate (20) also includes the blue color filter layer (80) being located on described infrabasal plate body (21), and described blue color filter layer (80) lays respectively at described red pixel groove (31) and green pixel groove (32) bottom and is positioned at barricade (22) bottom of described red pixel groove (31) and green pixel groove (32) periphery.
6. the manufacture method of a blue phase liquid crystal display device, it is characterised in that comprise the steps:
Step 1, red quantum point blue phase liquid crystal material, green quantum is provided to fill enamel phase liquid crystal material and blue quantum is filled enamel phase liquid crystal material；Described red quantum point blue phase liquid crystal material includes liquid crystal, chiral agent, polymerisable monomer and red quantum point；Described green quantum phase liquid crystal material of filling enamel includes liquid crystal, chiral agent, polymerisable monomer and green quantum dot；Described blue quantum phase liquid crystal material of filling enamel includes liquid crystal, chiral agent, polymerisable monomer and blue quantum dot；
Step 2, offer upper substrate (10) and infrabasal plate (20), described infrabasal plate (20) includes infrabasal plate body (21) and several barricade (22) being located on infrabasal plate body (21), described several barricade (22) surrounds several pixel groove (30) on described infrabasal plate body (21), and described several pixel grooves (30) include several red pixel groove (31), several green pixel groove (32) and several blue pixel groove (33)；
Step 3, in described red pixel groove (31) add red quantum point blue phase liquid crystal material, in described green pixel groove (32), add green quantum fill enamel phase liquid crystal material, described blue pixel groove (33) in, add blueness quantum fill enamel phase liquid crystal material；
By described upper substrate (10) and infrabasal plate (20) para-position laminating, the top end surface of several barricade (22) on described infrabasal plate (20) and described upper substrate (10) realize between a side surface of described blue phase liquid crystal layer (40) seamless applying, form a blue-phase liquid crystal display panel (50)；Described blue-phase liquid crystal display panel (50) is heated, by red, green, blue quantum is filled enamel after phase liquid crystal material is heated to clearing point and is lowered the temperature, cool to when liquid crystal transfers blue phase to and keep temperature constant, carry out irradiation under ultraviolet ray, make red, green, blue quantum is filled enamel the polymerisable monomer polymerization in phase liquid crystal material, form polymer, obtain red quantum point blue phase liquid crystal layer (41), green quantum is filled enamel phase liquid crystal layer (42), and blue quantum fills enamel phase liquid crystal layer (43), thus obtaining including several red quantum point blue phase liquid crystal layer (41), several green quantum are filled enamel phase liquid crystal layer (42), and several blue quantum fills enamel the blue phase liquid crystal layer (40) of phase liquid crystal layer (43)；
Step 4, offer backlight module (60), after being combined with blue-phase liquid crystal display panel (50) by described backlight module (60), obtain blue phase liquid crystal display device.
7. the manufacture method of blue phase liquid crystal display device as claimed in claim 6, it is characterised in that in described red green blue quantum dot blue phase liquid crystal material, the mass percent of described polymerisable monomer is 5-25%；The mass percent of described red green blue quantum dot is 0.01-2%；The mass percent of described chiral agent is 3-15%；
Described liquid crystal is nematic liquid crystal；
Described polymerisable monomer includes one or more the combination in acrylate, acrylate derivative, methacrylate, methacrylate derivative, styrene, styrene derivative and epoxy resin；
Described red green blue quantum dot includes one or more the mixture in CdX, PbX, ZnX, HgX, GaX and InX or the nucleocapsid structure of the formation of the multiple combination in CdX, PbX, ZnX, HgX, GaX and InX, and wherein X is S, Se or Te；
Described chiral agent is isosorbide class chiral agent.
8. the manufacture method of blue phase liquid crystal display device as claimed in claim 6, it is characterised in that in described step 3, from clearing point, red, green, blue colo(u)r specification point blue phase liquid crystal material is cooled to the cooling rate blue phase process is 0.01 DEG C/min-2 DEG C/min；Described ultraviolet light is irradiated from upper substrate (10) side or infrabasal plate (20) side；Described ultraviolet light is common ultraviolet or polarized ultraviolet.
9. the manufacture method of blue phase liquid crystal display device as claimed in claim 6, it is characterised in that described backlight module (60) includes blue-light source.
10. the manufacture method of blue phase liquid crystal display device as claimed in claim 9, it is characterized in that, in described step 2, described infrabasal plate (20) also includes the blue color filter layer (80) being located on described infrabasal plate body (21), and described blue color filter layer (80) lays respectively at described red pixel groove (31) and green pixel groove (32) bottom and is positioned at barricade (22) bottom of described red pixel groove (31) and green pixel groove (32) periphery.
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