WO2017177497A1 - 液晶显示装置及其制作方法 - Google Patents

液晶显示装置及其制作方法 Download PDF

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Publication number
WO2017177497A1
WO2017177497A1 PCT/CN2016/081938 CN2016081938W WO2017177497A1 WO 2017177497 A1 WO2017177497 A1 WO 2017177497A1 CN 2016081938 W CN2016081938 W CN 2016081938W WO 2017177497 A1 WO2017177497 A1 WO 2017177497A1
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Prior art keywords
liquid crystal
quantum dot
substrate
crystal display
display device
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PCT/CN2016/081938
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English (en)
French (fr)
Inventor
陈兴武
马小龙
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US15/115,684 priority Critical patent/US10222670B2/en
Publication of WO2017177497A1 publication Critical patent/WO2017177497A1/zh

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    • 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
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/02—Materials and properties organic material
    • G02F2202/022—Materials and properties organic material polymeric
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a liquid crystal display device and a method of fabricating the same.
  • Liquid crystal display is one of the most widely used flat panel displays.
  • the liquid crystal panel is a core component of liquid crystal displays.
  • a conventional liquid crystal display panel usually consists of a color filter (CF) substrate, a thin film transistor array substrate (TFT Array Substrate), and a liquid crystal layer disposed between the two substrates (Liquid Crystal). Layer), the working principle is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The liquid crystal molecules can be controlled to change direction by energizing or not. The light is refracted to produce a picture.
  • the thin film transistor array substrate is provided with a thin film transistor (TFT) array for driving the rotation of the liquid crystal to control the display of each pixel, and the color filter substrate is provided with an RGB color filter layer for forming each pixel. color.
  • TFT thin film transistor
  • Quantum dots (QDs) luminescent materials are a new technology applied to the field of liquid crystal display technology.
  • Quantum dots consist of nanoparticles with a particle size between 1 and 20 nm. Since the electrons and holes are quantum confined, the continuous band structure of the quantum dots is separated into independent energy levels, which can emit fluorescence after being excited.
  • the spectrum of quantum dots is mainly controlled by the particle size of quantum dots. Therefore, the emission spectrum can be adjusted by changing the particle size of quantum dots, and then white light can be formed by combining quantum dots of different particle diameters at a certain ratio.
  • the quantum dot luminescent material has the advantages of concentrated luminescence spectrum and high color purity, and is applied to the field of liquid crystal display technology, which can greatly improve the color gamut of the conventional liquid crystal display and enhance the color reproduction capability of the liquid crystal display. At the same time, the quantum dot luminescent material has high light conversion efficiency and can improve the utilization of light.
  • the blue phase (BP) is a phase state with special properties in the phase transition of the liquid crystal. It appears between the nematic phase and the identical phase.
  • the blue phase liquid crystal has a unique double twisted spiral arrangement.
  • the advantage of fast response, response time can be less than 1ms, can be applied to field sequential display and 3D display.
  • the blue phase liquid crystal is an isotropic structure, the optical birefringence can be generated by applying electricity, and the liquid crystal display device using the blue phase liquid crystal does not need to produce an alignment layer, which can reduce the difficulty of the process and reduce the cost.
  • the blue phase liquid crystal has a narrow temperature range (generally 1-2 ° C), a high driving voltage, and difficulty in returning to the initial state due to power supply, there is a problem of hysteresis, which is difficult to be utilized in practical applications.
  • the temperature range of the blue phase liquid crystal can be broadened by the method of stabilizing the blue phase liquid crystal by the polymer.
  • This method requires adding a polymerizable monomer to the liquid crystal when the liquid crystal is heated to blue.
  • Ultraviolet irradiation polymerization of the polymerizable monomer in the phase temperature range can largely broaden the temperature range of the blue phase.
  • This method requires high temperature accuracy.
  • the temperature during polymerization needs to be controlled within ⁇ 1 ° C or even a smaller temperature range. The process is very difficult; another method of widening the temperature range of the blue phase liquid crystal is to increase the certain amount in the blue phase liquid crystal.
  • the proportion of nanoparticles can control the temperature range of the blue phase to a certain extent.
  • the object of the present invention is to provide a liquid crystal display device, which is a blue phase liquid crystal display device, which has a wide blue phase temperature domain, does not require an alignment layer, has low fabrication cost, fast response, high backlight utilization, and high display color gamut. For fast display and 3D display.
  • Another object of the present invention is to provide a method of fabricating a liquid crystal display device, which can reduce the manufacturing cost, improve the response speed of the liquid crystal display device, the backlight utilization rate, and the display color gamut.
  • the present invention firstly provides a liquid crystal display device comprising: a liquid crystal display panel; and a backlight module located under the liquid crystal display panel;
  • the liquid crystal display panel includes a TFT array substrate and a color filter substrate disposed opposite to each other, a liquid crystal layer interposed between the TFT array substrate and the color filter substrate, and is disposed on the TFT array substrate away from the a lower polarizer on one side of the liquid crystal layer; and an upper polarizer disposed on a side of the color filter substrate away from the liquid crystal layer;
  • the liquid crystal layer is formed by a liquid crystal composition comprising a liquid crystal material, a quantum dot material mixed in the liquid crystal material, a polymerizable monomer, and a chiral agent;
  • the liquid crystal material in the liquid crystal layer is a blue phase liquid crystal
  • the polymerizable monomer polymerizes to form a polymer network in the blue phase temperature domain of the liquid crystal material when forming a liquid crystal layer.
  • the mass percentage of the polymerizable monomer in the liquid crystal composition is from 0.1% by weight to 25% by weight.
  • the quantum dot material in the liquid crystal composition comprises: a photoinduced red luminescent quantum dot, a photoinduced green luminescent quantum dot, and a photoinduced blue luminescent quantum dot;
  • the mass percentage concentration of the photoluminescence red luminescent quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; the mass concentration of the photoluminescent green luminescent quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; The mass percentage concentration of the photoluminescent blue luminescent quantum dots in the liquid crystal composition is less than 2% by weight.
  • the quantum dot material in the liquid crystal composition is a quantum dot having a surface modified with a ligand molecule, and the material of the quantum dot is CdS, CSe, CTe, PbS, PbSe, PbTe, ZnS, ZnSe, One or more of ZnTe, HgS, HgSe, HgTe, GaS, GaSe, Gae, InS, InSe, InTe, the quantum dots having a size of 1-30 nm.
  • the TFT array substrate includes: a first substrate, a TFT array disposed on the first substrate, and an electrode layer disposed on the TFT array;
  • the color filter substrate includes: a second substrate; a black matrix disposed on the second substrate; a color filter layer disposed on the second substrate and the black matrix; a column spacer on the color filter layer;
  • the backlight module is a blue backlight module.
  • the invention also provides a method for fabricating a liquid crystal display device, comprising the following steps:
  • Step 1 Providing a TFT array substrate and a color filter substrate
  • Step 2 providing a liquid crystal composition, the liquid crystal composition is dropped on the TFT array substrate or the color filter substrate;
  • the liquid crystal composition includes a liquid crystal material, a quantum dot material mixed in the liquid crystal material, a polymerizable monomer, and a chiral agent;
  • the liquid crystal material in the liquid crystal composition is a nematic liquid crystal
  • Step 3 the TFT array substrate and the color filter substrate are paired to obtain a liquid crystal cell
  • Step 4 After the liquid crystal cell is heated to a clearing point of the liquid crystal material, the temperature is lowered, and when the temperature is lowered to the blue phase temperature range of the liquid crystal material, the temperature is kept constant, and the liquid crystal cell is irradiated with ultraviolet light from the TFT array substrate side. Polymerizing the polymerizable monomer therein to form a polymer network, and obtaining a liquid crystal layer interposed between the TFT array substrate and the color filter substrate. At this time, the liquid crystal material in the liquid crystal layer is blue phase liquid crystal. ;
  • Step 5 attaching a lower polarizer on the side of the TFT array substrate away from the liquid crystal layer, and attaching a polarizer on the side of the color filter substrate away from the liquid crystal layer to obtain a liquid crystal display panel;
  • Step 6 Providing a backlight module, combining the liquid crystal display panel and the backlight module to complete the fabrication of the liquid crystal display device.
  • the quantum dot material comprises: a photoinduced red luminescent quantum dot, a photoinduced green luminescent quantum dot, and a photoinduced blue luminescent quantum dot;
  • the mass percentage concentration of the photoluminescence red luminescent quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; the mass concentration of the photoluminescent green luminescent quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; The mass percentage concentration of the photoluminescent blue luminescent quantum dots in the liquid crystal composition is less than 2 wt%;
  • the quantum dot material in the liquid crystal composition is a quantum dot having a surface modified with a ligand molecule, and the material of the quantum dot is CdS, CSe, CTe, PbS, PbSe, PbTe, ZnS, ZnSe, One or more of ZnTe, HgS, HgSe, HgTe, GaS, GaSe, Gae, InS, InSe, InTe, the quantum dots having a size of 1-30 nm.
  • the liquid crystal composition provided in the step 2 has a mass percentage concentration of the polymerizable monomer in the liquid crystal composition of 0.1% by weight to 25% by weight.
  • the temperature drop rate of the liquid crystal cell is 0.01 ° C / min - 2 ° C / min.
  • the TFT array substrate includes: a first substrate, a TFT array disposed on the first substrate, and an electrode layer disposed on the TFT array;
  • the color filter substrate includes: a second substrate; a black matrix disposed on the second substrate; a color filter layer disposed on the second substrate and the black matrix; a column spacer on the color filter layer;
  • the backlight module is a blue backlight module.
  • the present invention also provides a liquid crystal display device comprising: a liquid crystal display panel; and a backlight module located below the liquid crystal display panel;
  • the liquid crystal display panel includes a TFT array substrate and a color filter substrate disposed opposite to each other, a liquid crystal layer interposed between the TFT array substrate and the color filter substrate, and is disposed on the TFT array substrate away from the a lower polarizer on one side of the liquid crystal layer; and an upper polarizer disposed on a side of the color filter substrate away from the liquid crystal layer;
  • the liquid crystal layer is formed by a liquid crystal composition comprising a liquid crystal material, a quantum dot material mixed in the liquid crystal material, a polymerizable monomer, and a chiral agent;
  • the liquid crystal material in the liquid crystal layer is a blue phase liquid crystal
  • the polymerizable monomer polymerizes to form a polymer network in a blue phase temperature domain of the liquid crystal material when forming a liquid crystal layer;
  • the mass percentage concentration of the polymerizable monomer in the liquid crystal composition is from 0.1 wt% to 25 wt%;
  • the quantum dot material in the liquid crystal composition comprises: a photoinduced red luminescent quantum dot, a photoinduced green luminescent quantum dot, and a photoinduced blue luminescent quantum dot;
  • the mass percentage concentration of the photoluminescence red luminescent quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; the mass concentration of the photoluminescent green luminescent quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; The mass percentage concentration of the photoluminescent blue luminescent quantum dots in the liquid crystal composition is less than 2% by weight.
  • the liquid crystal display device provided by the present invention is a blue phase liquid crystal display device, which does not require an alignment layer, and the liquid crystal composition forming the liquid crystal layer includes a liquid crystal material, a quantum dot material mixed in the liquid crystal material, and a polymerizable layer.
  • the polymerizable monomer polymerizes to form a polymer network in a blue phase temperature range of the liquid crystal material when forming a liquid crystal layer, and is capable of stabilizing the blue phase liquid Crystallizing and broadening the blue phase temperature range of the liquid crystal material, the quantum dot material has a particle size of nanometer level, which can widen the temperature range of the blue phase liquid crystal, that is, the blue phase temperature domain of the liquid crystal material is broadened before the polymerization of the polymerizable monomer.
  • the liquid crystal composition forming the liquid crystal layer comprises a liquid crystal material, a quantum dot material mixed in the liquid crystal material, a polymerizable monomer, and a chiral agent, and the liquid crystal material is in a blue phase.
  • the polymerizable monomer is irradiated by ultraviolet light to polymerize to form a polymer network, thereby forming a blue phase liquid crystal display device having a wide temperature range and a low hysteresis effect, thereby eliminating the fabrication of the alignment layer in the liquid crystal display device.
  • the cost is reduced, the response speed of the liquid crystal display device is improved, and the backlight utilization ratio and display color gamut of the liquid crystal display device are improved.
  • FIG. 1 is a schematic structural view of a liquid crystal display device of the present invention
  • FIG. 2 is a flow chart showing a method of fabricating a liquid crystal display device of the present invention
  • FIG. 3 is a schematic view showing a step 1 of a method of fabricating a liquid crystal display device of the present invention
  • FIG. 4 is a schematic view showing a step 3 of a method for fabricating a liquid crystal display device of the present invention
  • FIG. 5 is a schematic view showing a step 4 of a method of fabricating a liquid crystal display device of the present invention.
  • Fig. 6 is a schematic view showing the fifth step of the method for fabricating the liquid crystal display device of the present invention.
  • the present invention provides a liquid crystal display device, comprising: a liquid crystal display panel 1, and a backlight module 2 located below the liquid crystal display panel 1;
  • the liquid crystal display panel 1 includes a TFT array substrate 100 and a color filter substrate 200 disposed opposite to each other, a liquid crystal layer 300 interposed between the TFT array substrate 100 and the color filter substrate 200, and is disposed on the TFT array substrate 100.
  • the TFT array substrate 100 includes: a first substrate substrate, and is disposed on the first substrate substrate. a TFT array on the board and an electrode layer disposed on the TFT array; the color filter substrate 200 is configured to prevent color mixing and light leakage, form a color display, and provide a cell thickness, including: the second substrate 210; A black light-shielding matrix 230 on the second substrate, a color filter layer 220 provided on the second substrate and the black light-shielding matrix 230, and a column spacer disposed on the color filter layer 220.
  • the liquid crystal layer 300 is formed of a liquid crystal composition including a liquid crystal material 310, a quantum dot material 320 mixed in the liquid crystal material 310, a polymerizable monomer 330, and a chiral agent.
  • the liquid crystal material 310 in the liquid crystal layer 300 is a blue phase liquid crystal.
  • the polymerizable monomer 330 polymerizes to form a polymer network in the blue phase temperature range of the liquid crystal material 310 when the liquid crystal layer 300 is formed, and can stabilize the blue phase liquid crystal, thereby widening the blue phase temperature range of the liquid crystal material 310.
  • the mass percentage of the polymerizable monomer 330 in the liquid crystal composition is from 0.1% by weight to 25% by weight.
  • the blue phase liquid crystal material 310 in the liquid crystal layer 300 is made of a nematic liquid crystal material 310, which is a positive liquid crystal.
  • the molecular structure of the liquid crystal material 310 is one or more of the following:
  • n 3, 4, 5, 6, 7, 8.
  • the mass percentage of the chiral agent in the liquid crystal composition is from 2% by weight to 5% by weight.
  • the molecular structure of the chiral agent is
  • the polymerizable monomer 330 is an ultraviolet polymerizable monomer having liquid crystallinity and a terminal group containing a double bond.
  • the ultraviolet polymerizable monomer itself has liquid crystallinity, and the terminal group contains a double bond, which can dissolve better. To the liquid crystal molecules.
  • the polymerizable monomer 330 is: 1,4-bis(4-(6'-propyleneoxyhexyloxy)benzoyloxy)-2-toluene, and its molecular structural formula is
  • the quantum dot material 320 in the liquid crystal composition includes: a photoinduced red luminescent quantum dot, a photoinduced green luminescent quantum dot, and a photoinduced blue luminescent quantum dot; the quality of the photoinduced red luminescent quantum dot in the liquid crystal composition
  • the percentage concentration is 0.01 wt% to 2 wt%; the mass concentration of the photoluminescent green light-emitting quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; the mass concentration of the photoluminescence blue light-emitting quantum dots in the liquid crystal composition is 2wt% or less.
  • the backlight module 2 is a blue backlight module that emits a blue backlight.
  • the quantum dot material 320 may not include a photoluminescence blue quantum dot.
  • the quantum dot material 320 in the liquid crystal composition is a surface-modified quantum dot having a ligand molecule on its surface.
  • the material of the quantum dot is one or more of CdS, CSe, CTe, PbS, PbSe, PbTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, GaS, GaSe, Gae, InS, InSe, InTe.
  • the ligand molecule is mainly a ligand having a liquid crystal group
  • the quantum dot material 320 having a ligand molecule on the surface is lipophilic, thereby making the quantum dot material 320 better.
  • the surface modification method of the quantum dot material 320 may be a microcapsule method, a microemulsion method, a composite method, and a surfactant method.
  • the quantum dot material 320 in the liquid crystal composition is a mixture of particles having different particle diameters, and the quantum dots forming the quantum dot material 320 have a size of 1 to 30 nm.
  • the response time of the blue phase liquid crystal can be less than 1 ms, the response speed of the liquid crystal display device is improved, and at the same time, the alignment layer is not required in the liquid crystal display device due to the characteristics of the blue phase liquid crystal, which can reduce the difficulty of the process and reduce the production cost.
  • the polymerizable monomer 330 receives ultraviolet light irradiation to generate polymerization when the liquid crystal material 310 is in the blue phase temperature range, forms a polymer network, can stabilize the blue phase liquid crystal, broadens the blue phase temperature range of the liquid crystal material 310, and reduces the blue phase liquid crystal application.
  • the quantum dot material 320 acts as a nanoparticle, which broadens the blue phase temperature range of the liquid crystal material 310, that is, widens the blue phase temperature range of the liquid crystal material 310 before the polymerization of the polymerizable monomer 330, and polymerizes the polymerizable monomer.
  • the process is less difficult, and can reduce the hysteresis phenomenon and achieve zero hysteresis effect.
  • the utilization ratio of the backlight of the liquid crystal display device and the display color gamut are improved, and the liquid crystal display device has good performance and can be applied to the fast. Display and 3D display areas.
  • the present invention further provides a method for fabricating a liquid crystal display device, including the following steps:
  • Step 1 A TFT array substrate 100 and a color filter substrate 200 are provided.
  • the TFT array substrate 100 includes: a first substrate, a TFT array disposed on the first substrate and an electrode layer disposed on the TFT array;
  • the color filter substrate 200 includes: a second substrate 210 and a black layer disposed on the second substrate 210 The light shielding matrix 230, the color filter layer 220 disposed on the second substrate 210 and the black light shielding matrix 230, and the column spacer disposed on the color filter layer 220.
  • Step 2 providing a liquid crystal composition, the liquid crystal composition is dripped on the TFT array substrate 100 or the color filter substrate 200;
  • the liquid crystal composition includes a liquid crystal material 310, a quantum dot material 320 mixed in the liquid crystal material 310, a polymerizable monomer 330, and a chiral agent;
  • the liquid crystal material 310 in the liquid crystal composition is a nematic liquid crystal.
  • the liquid crystal material 310 is a positive liquid crystal.
  • the molecular structure of the liquid crystal material 310 is one or more of the following:
  • n 3, 4, 5, 6, 7, 8.
  • the mass percentage of the chiral agent in the liquid crystal composition is from 2% by weight to 5% by weight.
  • the molecular structure of the chiral agent is
  • the polymerizable monomer 330 is an ultraviolet polymerizable monomer having liquid crystallinity and a terminal group containing a double bond.
  • the ultraviolet polymerizable monomer itself has liquid crystallinity, and the terminal group contains a double bond, which can dissolve better. To the liquid crystal molecules.
  • the polymerizable monomer 330 is: 1,4-bis(4-(6'-propyleneoxyhexyloxy)benzoyloxy)-2-toluene, and its molecular structural formula is
  • the mass percentage of the polymerizable monomer 330 in the liquid crystal composition is from 0.1% by weight to 25% by weight.
  • the quantum dot material 320 in the liquid crystal composition includes: a photoinduced red luminescent quantum dot, a photoinduced green luminescent quantum dot, and a photoinduced blue luminescent quantum dot; the quality of the photoinduced red luminescent quantum dot in the liquid crystal composition
  • the percentage concentration is 0.01 wt% to 2 wt%; the mass concentration of the photoluminescent green light-emitting quantum dots in the liquid crystal composition is 0.01 wt% to 2 wt%; the mass concentration of the photoluminescence blue light-emitting quantum dots in the liquid crystal composition is 2wt% or less.
  • the quantum dot material 320 in the liquid crystal composition is a surface-modified quantum dot having a ligand molecule on its surface.
  • the material of the quantum dot is one or more of CdS, CSe, CTe, PbS, PbSe, PbTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, GaS, GaSe, Gae, InS, InSe, InTe.
  • the ligand molecule is mainly a ligand having a liquid crystal group
  • the quantum dot material 320 having a ligand molecule on the surface is lipophilic, thereby making the quantum dot material 320 better.
  • the surface modification method of the quantum dot material 320 may be a microcapsule method, a microemulsion method, a composite method, and a surfactant method.
  • the quantum dot material 320 in the liquid crystal composition is a mixture of particles having different particle diameters, and the quantum dots forming the quantum dot material 320 have a size of 1 to 30 nm.
  • Step 3 As shown in FIG. 4, the TFT array substrate 100 and the color filter substrate 200 are paired to obtain a liquid crystal cell.
  • Step 4 as shown in FIG. 5, after the liquid crystal cell is heated to a clearing point of the liquid crystal material 310 therein, the temperature is lowered, and when the temperature is lowered to the blue phase temperature range of the liquid crystal material 310, the temperature is kept constant, from the TFT array substrate.
  • the liquid crystal cell is irradiated with ultraviolet light on the 100 side to polymerize the polymerizable monomer 330 therein to form a polymer network, thereby obtaining a liquid crystal layer 300 interposed between the TFT array substrate 100 and the color filter substrate 200.
  • the liquid crystal material 310 in the liquid crystal layer 300 is a blue phase liquid crystal.
  • the blue phase temperature range of the liquid crystal material 310 can be broadened, that is, before the polymerization of the polymerizable monomer 330 in the step 4 is broadened.
  • the blue phase temperature domain of the liquid crystal material 310 reduces the accuracy requirement of the polymerizable monomer 330 in the step 4 in the blue phase temperature domain, and reduces the difficulty of the polymerization process.
  • the temperature drop rate of the liquid crystal cell is 0.01 ° C / min - 2 ° C / min.
  • Step 5 as shown in FIG. 6, the lower polarizer 410 is attached to the side of the TFT array substrate 100 away from the liquid crystal layer 300, and the polarizing film 410 is disposed on the side of the color filter substrate 200 away from the liquid crystal layer 300.
  • the sheet 420 obtains the liquid crystal display panel 1.
  • Step 6 providing a backlight module 2, combining the liquid crystal display panel 1 and the backlight module 2 to complete the fabrication of the liquid crystal display device.
  • the backlight module 2 is a blue backlight module that emits a blue backlight; optionally,
  • the quantum dot material 320 in the liquid crystal composition provided in the step 2 may also not include photoluminescence blue luminescent quantum dots.
  • the liquid crystal display device produced by the method for fabricating the liquid crystal display device is a blue phase liquid crystal liquid crystal display device. Since the response time of the blue phase liquid crystal can be less than 1 ms, the response speed of the liquid crystal display device produced is improved, and at the same time, due to the blue phase liquid crystal In the manufacturing method of the liquid crystal display device, the alignment layer process is not required, the process difficulty can be reduced, and the production cost can be reduced.
  • the polymerizable monomer 330 receives ultraviolet light to generate polymerization when the liquid crystal material 310 is in the blue phase temperature range, and forms a polymer.
  • the network can stabilize the blue phase liquid crystal, broaden the blue phase temperature range, and reduce the difficulty of the blue phase liquid crystal application.
  • the quantum dot material 320 acts as a nano particle, which can broaden the blue phase temperature range of the liquid crystal material 310, that is, polymerize in the polymerizable monomer 330.
  • the blue phase temperature domain of the liquid crystal material 310 has been previously reduced, the difficulty of the polymerization process of the polymerizable monomer is reduced, and the hysteresis phenomenon can be reduced, the zero hysteresis effect can be realized, and the liquid crystal display device can be manufactured due to the characteristics of the quantum dot material.
  • the utilization ratio of the backlight of the produced liquid crystal display device and the display color gamut are improved, and the performance of the liquid crystal display device is improved.
  • the liquid crystal display device can be used to quickly display and 3D display field.
  • the liquid crystal display device of the present invention is a blue phase liquid crystal display device, which does not require an alignment layer, and the liquid crystal composition forming the liquid crystal layer includes a liquid crystal material, a quantum dot material mixed in the liquid crystal material, and a polymerizable monomer.
  • the polymerizable monomer polymerizes to form a polymer network in a blue phase temperature range of the liquid crystal material when forming a liquid crystal layer, can stabilize a blue phase liquid crystal, and broaden a blue phase temperature domain of the liquid crystal material, the quantum
  • the particle size of the point material is nanometer, which can widen the temperature range of the blue phase liquid crystal, that is, the blue phase temperature domain of the liquid crystal material is broadened before the polymerization of the polymerizable monomer, thereby reducing the temperature precision requirement of the polymerization process, and the quantum dot material
  • the hysteresis phenomenon can be improved, and the utilization ratio of the backlight of the liquid crystal display device and the display color gamut are improved, so that the liquid crystal display device can be used in the fields of fast display and 3D display.
  • the liquid crystal composition forming the liquid crystal layer comprises a liquid crystal material, a quantum dot material mixed in the liquid crystal material, a polymerizable monomer, and a chiral agent, and the liquid crystal material is in a blue phase.
  • the polymerizable monomer is irradiated by ultraviolet light to polymerize to form a polymer network, thereby forming a blue phase liquid crystal display device having a wide temperature range and a low hysteresis effect, thereby eliminating the fabrication of the alignment layer in the liquid crystal display device.
  • the cost is reduced, the response speed of the liquid crystal display device is improved, and the backlight utilization ratio and display color gamut of the liquid crystal display device are improved.

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Abstract

一种液晶显示装置及其制作方法，该液晶显示装置为蓝相液晶显示装置，无需配向层，形成液晶层（300）的液晶组合物包括液晶材料（310）、混合于所述液晶材料（310）中的量子点材料（320）、可聚合单体（330）、及手性剂；所述可聚合单体（330）在形成液晶层（300）时在液晶材料（310）的蓝相温域下聚合形成聚合物网络，能够稳定蓝相液晶、拓宽液晶材料（310）的蓝相温域，所述量子点材料（320）的粒径为纳米级别，能够拓宽蓝相液晶温域，即在可聚合单体（330）聚合前已将液晶材料（310）的蓝相温域拓宽，从而降低了聚合制程的温度精度要求及难度，并且量子点材料（320）可改善磁滞现象，同时提升了液晶显示装置的背光的利用率及显示色域，使该液晶显示装置可用于快速显示及3D显示领域。

Description

液晶显示装置及其制作方法 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种液晶显示装置及其制作方法。
背景技术
液晶显示器(Liquid Crystal Display，LCD)是目前最广泛使用的平板显示器之一，液晶面板是液晶显示器的核心组成部分。
传统的液晶显示面板通常是由一彩色滤光片(Color Filter，CF)基板、一薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)以及一配置于两基板间的液晶层(Liquid Crystal Layer)所构成，其工作原理是在两片平行的玻璃基板当中放置液晶分子，两片玻璃基板中间有许多垂直和水平的细小电线，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。其中薄膜晶体管阵列基板上制备有薄膜晶体管(TFT)阵列，用于驱动液晶的旋转，控制每个像素的显示，而彩色滤光片基板上设置RGB彩色滤光层，用于形成每个像素的色彩。
量子点(Quantumdots，QDs)发光材料是一种应用于液晶显示技术领域的新技术。量子点由粒径介于1～20nm之间的纳米颗粒组成。由于电子和空穴被量子限域，量子点连续的能带结构被分立独立能级结构，受激后可以发射荧光。量子点的发生光谱主要由量子点的粒径大小来控制，因此可以通过改变量子点的粒径来实现发射光谱的调节，再通过不同粒径的量子点按一定比率组合形成白色光。量子点发光材料具有发光光谱集中、色纯度高的优点，应用于液晶显示技术领域，可以大幅度提高传统液晶显示器的色域，使液晶显示器的色彩还原能力得到增强。同时，量子点发光材料的光转换效率很高，可以提高光的利用率。
蓝相(Blue phase，BP)是液晶相态变化过程中具有特殊性质的一个相态，出现在向列相和各相同性相之间，蓝相液晶由于其特有的双扭曲螺旋排列结构，具有快速响应的优点，响应时间可小于1ms，可应用于场序显示及3D显示方面。同时由于蓝相液晶为各向同性结构，可加电产生光学双折射，应用蓝相液晶的液晶显示装置无需制作配向层，可降低制程难度减少成本。但由于蓝相液晶存在温域窄(一般1-2℃)、驱动电压高、及加电很难恢复到初始状态即存在磁滞现象的问题，在实际应用中很难被利用。
现有技术中为了拓宽蓝相液晶的温域，一般可以通过聚合物稳定蓝相液晶的方法拓宽蓝相液晶的温域，这种方法需要在液晶中加入可聚合单体，当液晶加热到蓝相温域的时候对可聚合单体进行紫外照射聚合，可以很大程度上拓宽蓝相的温域。此种方法对温度精度要求很高，聚合时温度需控制在±1℃甚至更小温度范围内，工艺难度很大；另一种拓宽蓝相液晶温域的方法是在蓝相液晶中增加一定比例的纳米粒子，可以在一定程度控制蓝相的温域。
发明内容
本发明的目的在于提供一种液晶显示装置，为蓝相液晶显示装置，具有较宽的蓝相温域，无需配向层，制作成本低，响应快速，背光利用率高，显示色域高，可用于快速显示及3D显示领域。
本发明的另一目的在于提供一种液晶显示装置的制作方法，降低制作成本，提升液晶显示装置的响应速度、背光利用率、及显示色域。
为实现上述目的，本发明首先提供一种液晶显示装置，包括：液晶显示面板、及位于液晶显示面板下方的背光模组；
所述液晶显示面板包括相对设置的TFT阵列基板和彩色滤光片基板、夹设于所述TFT阵列基板和彩色滤光片基板之间的液晶层、设于所述TFT阵列基板上远离所述液晶层一侧的下偏光片、及设于所述彩色滤光片基板上远离所述液晶层一侧的上偏光片；
所述液晶层由一液晶组合物所形成，该液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；
所述液晶层中的液晶材料为蓝相液晶；
所述可聚合单体在形成液晶层时在所述液晶材料的蓝相温域下聚合形成聚合物网络。
所述可聚合单体在液晶组合物中的质量百分比浓度为0.1wt％-25wt％。
所述液晶组合物中的量子点材料包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；
所述光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致蓝色发光量子点在液晶组合物中的质量百分比浓度为小于2wt％。
所述液晶组合物中的量子点材料为表面经过修饰具有配体分子的量子点，该量子点的材料为CdS，CSe，CTe，PbS，PbSe，PbTe，ZnS，ZnSe， ZnTe，HgS，HgSe，HgTe，GaS，GaSe，Gae，InS，InSe，InTe中的一种或多种，该量子点的尺寸为1-30nm。
所述TFT阵列基板包括：第一衬底基板、设于所述第一衬底基板上的TFT阵列、及设于所述TFT阵列上的电极层；
所述彩色滤光片基板包括：第二衬底基板、设于所述第二衬底基板上的黑色矩阵、设于所述第二衬底基板及黑色矩阵上的彩色滤光层、及设于所述彩色滤光层上的柱状隔垫物；
所述背光模组为蓝光背光模组。
本发明还提供一种液晶显示装置的制作方法，包括以下步骤：
步骤1、提供一TFT阵列基板和一彩色滤光片基板；
步骤2、提供一液晶组合物，将所述液晶组合物滴加在TFT阵列基板或彩色滤光片基板上；
所述液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；
此时，液晶组合物中的液晶材料为向列相液晶；
步骤3、将TFT阵列基板和彩色滤光片基板对组，得到液晶盒；
步骤4、对所述液晶盒加热至液晶材料的清亮点后进行降温，当温度降至液晶材料的蓝相温域时保持温度恒定，从TFT阵列基板侧对所述液晶盒进行紫外光照射，使其内的可聚合单体聚合形成聚合物网络，得到夹设于所述TFT阵列基板和彩色滤光片基板之间的液晶层，此时，所述液晶层内的液晶材料为蓝相液晶；
步骤5、在所述TFT阵列基板上远离所述液晶层一侧贴设下偏光片，在所述彩色滤光片基板上远离所述液晶层一侧贴设上偏光片，得到液晶显示面板；
步骤6、提供背光模组，将液晶显示面板与背光模组进行组合，完成液晶显示装置的制作。
所述步骤2提供的液晶组合物中，所述量子点材料包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；
所述光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致蓝色发光量子点在液晶组合物中的质量百分比浓度为小于2wt％；
所述液晶组合物中的量子点材料为表面经过修饰具有配体分子的量子点，该量子点的材料为CdS，CSe，CTe，PbS，PbSe，PbTe，ZnS，ZnSe， ZnTe，HgS，HgSe，HgTe，GaS，GaSe，Gae，InS，InSe，InTe中的一种或多种，该量子点的尺寸为1-30nm。
所述步骤2提供的液晶组合物，可聚合单体在液晶组合物中的质量百分比浓度为0.1wt％-25wt％。
所述步骤4中，对所述液晶盒的降温速度为0.01℃/min-2℃/min。
所述TFT阵列基板包括：第一衬底基板、设于所述第一衬底基板上的TFT阵列、及设于所述TFT阵列上的电极层；
所述彩色滤光片基板包括：第二衬底基板、设于所述第二衬底基板上的黑色矩阵、设于所述第二衬底基板及黑色矩阵上的彩色滤光层、及设于所述彩色滤光层上的柱状隔垫物；
所述背光模组为蓝光背光模组。
本发明还提供一种液晶显示装置，包括：液晶显示面板、及位于液晶显示面板下方的背光模组；
所述液晶显示面板包括相对设置的TFT阵列基板和彩色滤光片基板、夹设于所述TFT阵列基板和彩色滤光片基板之间的液晶层、设于所述TFT阵列基板上远离所述液晶层一侧的下偏光片、及设于所述彩色滤光片基板上远离所述液晶层一侧的上偏光片；
所述液晶层由一液晶组合物所形成，该液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；
所述液晶层中的液晶材料为蓝相液晶；
所述可聚合单体在形成液晶层时在所述液晶材料的蓝相温域下聚合形成聚合物网络；
其中，所述可聚合单体在液晶组合物中的质量百分比浓度为0.1wt％-25wt％；
其中，所述液晶组合物中的量子点材料包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；
所述光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致蓝色发光量子点在液晶组合物中的质量百分比浓度为小于2wt％。
本发明的有益效果：本发明提供的液晶显示装置，为蓝相液晶显示装置，无需配向层，形成液晶层的液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；所述可聚合单体在形成液晶层时在液晶材料的蓝相温域下聚合形成聚合物网络，能够稳定蓝相液 晶、拓宽液晶材料的蓝相温域，所述量子点材料的粒径为纳米级别，能够拓宽蓝相液晶温域，即在可聚合单体聚合前已将液晶材料的蓝相温域拓宽，从而降低了聚合制程的温度精度要求，并且量子点材料可改善磁滞现象，同时提升了液晶显示装置的背光的利用率及显示色域，使该液晶显示装置可用于快速显示及3D显示领域。本发明提供的液晶显示装置的制作方法，形成液晶层的液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂，在液晶材料处于蓝相温域时利用紫外光对可聚合单体进行照射使其聚合形成聚合物网络，从而形成了具有宽温域、低磁滞效应的蓝相液晶显示装置，省去液晶显示装置中配向层的制作，降低成本，提高了液晶显示装置的响应速度，并且提高液晶显示装置的背光利用率及显示色域。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的液晶显示装置的结构示意图；
图2为本发明的液晶显示装置的制作方法的流程图；
图3为本发明的液晶显示装置的制作方法步骤1的示意图；
图4为本发明的液晶显示装置的制作方法步骤3的示意图；
图5为本发明的液晶显示装置的制作方法步骤4的示意图；
图6为本发明的液晶显示装置的制作方法步骤5的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1，本发明提供一种液晶显示装置，其特征在于，包括：液晶显示面板1、及位于液晶显示面板1下方的背光模组2；
所述液晶显示面板1包括相对设置的TFT阵列基板100和彩色滤光片基板200、夹设于TFT阵列基板100和彩色滤光片基板200之间的液晶层300、设于TFT阵列基板100上远离液晶层300一侧的下偏光片410，及设于彩色滤光片基板200上远离液晶层300一侧的上偏光片420。
其中，所述TFT阵列基板100包括：第一衬底基板、设于第一衬底基 板上的TFT阵列、及设于TFT阵列上的电极层；所述彩色滤光片基板200用于防止混色及漏光、形成彩色显示及提供盒厚，包括：第二衬底基板210、设于第二衬底基板上的黑色遮光矩阵230、设于第二衬底基板及黑色遮光矩阵230上的彩色滤光层220、及设置在彩色滤光层220上的柱状隔垫物。
所述液晶层300由一液晶组合物所形成，该液晶组合物包括：液晶材料310、混合于所述液晶材料310中的量子点材料320、可聚合单体330、及手性剂。
所述液晶层300中的液晶材料310为蓝相液晶。
所述可聚合单体330在形成液晶层300时在所述液晶材料310的蓝相温域下聚合形成聚合物网络，能够稳定蓝相液晶，从而拓宽液晶材料310的蓝相温域。
具体地，可聚合单体330在液晶组合物中的质量百分比浓度为0.1wt％-25wt％。
具体地，所述液晶层300中蓝相的液晶材料310由向列相的液晶材料310制得，所述液晶材料310为正性液晶。
优选地，所述液晶材料310的分子结构式为以下的一种或多种：
Figure PCTCN2016081938-appb-000001
其中，n＝3,4,5,6,7,8。
具体地，所述手性剂在液晶组合物中的质量百分比浓度为2wt％～5wt％。
优选地，所述手性剂的分子结构式为
Figure PCTCN2016081938-appb-000002
具体地，所述可聚合单体330为具有液晶性且端基含有双键的紫外可聚合单体，这种紫外可聚合单体自身具有液晶性，端基含有双键，可以更好的溶解到液晶分子中。
优选地，所述可聚合单体330为：1，4-双(4-(6’-丙烯氧基己氧基)苯甲酰氧基)-2-甲苯，其分子结构式为
Figure PCTCN2016081938-appb-000003
具体地，液晶组合物中的量子点材料320包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；光致蓝色发光量子点在液晶组合物中的质量百分比浓度为2wt％以下。
具体的，所述背光模组2为发出蓝光背光的蓝光背光模组；可选的，所述量子点材料320中也可不包括光致蓝色发光量子点。
进一步地，液晶组合物中的量子点材料320为经过表面修饰的量子点，其表面具有配体分子。具体的，该量子点的材料为CdS，CSe，CTe，PbS，PbSe，PbTe，ZnS，ZnSe，ZnTe，HgS，HgSe，HgTe，GaS，GaSe，Gae，InS，InSe，InTe中的一种或多种，包括以上任意材料组合形成的核壳结构；配体分子主要为带液晶基团的配体，表面具有配体分子的量子点材料320为亲油性，从而可使量子点材料320更好地在蓝相液晶310中分散。具体的，量子点材料320的表面修饰方法可以为微胶囊法、微乳液法、复合法、及表面活性剂法。
具体的，液晶组合物中的量子点材料320为具有不同粒径颗粒的混合物，形成量子点材料320的量子点的尺寸为1-30nm。
具体地，由于蓝相液晶响应时间可小于1ms，该液晶显示装置的响应速度得到提升，同时由于蓝相液晶的特性，该液晶显示装置中无需制作配向层，能够降低制程的难度减少生产成本，所述可聚合单体330在液晶材料310处于蓝相温域时接收紫外光照射产生聚合，形成聚合物网络，能够稳定蓝相液晶，拓宽液晶材料310的蓝相温域，降低蓝相液晶应用的难度，所述量子点材料320作为纳米粒子，可拓宽液晶材料310的蓝相温域，即在可聚合单体330聚合前已拓宽液晶材料310的蓝相温域，使可聚合单体聚合制程的难度降低，并且能降低磁滞现象，实现零磁滞效果，同时由于量子点材料的特性，液晶显示装置的背光的利用率及显示色域提高，液晶显示装置性能好，可应用于快速显示及3D显示领域。
请参阅图2，本发明还提供一种液晶显示装置的制作方法，包括以下步骤：
步骤1、提供一TFT阵列基板100和一彩色滤光片基板200。
请参阅图3，具体地，所述TFT阵列基板100包括：第一衬底基板、 设置在第一衬底基板上的TFT阵列、及设于TFT阵列上的电极层；所述彩色滤光片基板200包括：第二衬底基板210、设于第二衬底基板210上的黑色遮光矩阵230、及设于第二衬底基板210及黑色遮光矩阵230上的彩色滤光层220、及设置在彩色滤光层220上的柱状隔垫物。
步骤2、提供一液晶组合物，将所述液晶组合物滴布在在TFT阵列基板100或彩色滤光片基板200上；
所述液晶组合物包括液晶材料310、混合于所述液晶材料310中的量子点材料320、可聚合单体330、及手性剂；
此时，液晶组合物中的液晶材料310为向列相液晶。
具体地，所述液晶材料310为正性液晶。
优选地，所述液晶材料310的分子结构式为以下的一种或多种：
Figure PCTCN2016081938-appb-000004
其中，n＝3,4,5,6,7,8。
具体地，所述手性剂在液晶组合物中的质量百分比浓度为2wt％～5wt％。
优选地，所述手性剂的分子结构式为
Figure PCTCN2016081938-appb-000005
具体地，所述可聚合单体330为具有液晶性且端基含有双键的紫外可聚合单体，这种紫外可聚合单体自身具有液晶性，端基含有双键，可以更好的溶解到液晶分子中。
优选地，所述可聚合单体330为：1，4-双(4-(6’-丙烯氧基己氧基)苯甲酰氧基)-2-甲苯，其分子结构式为
Figure PCTCN2016081938-appb-000006
具体地，可聚合单体330在液晶组合物中的质量百分比浓度为0.1wt％-25wt％。
具体地，液晶组合物中的量子点材料320包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；光致蓝色发光量子点在液晶组合物中的质量百分比浓度为2wt％以下。
进一步地，液晶组合物中的量子点材料320为经过表面修饰的量子点，其表面具有配体分子。具体的，该量子点的材料为CdS，CSe，CTe，PbS，PbSe，PbTe，ZnS，ZnSe，ZnTe，HgS，HgSe，HgTe，GaS，GaSe，Gae，InS，InSe，InTe中的一种或多种，包括以上任意材料组合形成的核壳结构；配体分子主要为带液晶基团的配体，表面具有配体分子的量子点材料320为亲油性，从而可使量子点材料320更好地在蓝相液晶310中分散。具体的，量子点材料320的表面修饰方法可以为微胶囊法、微乳液法、复合法、及表面活性剂法。
具体地，液晶组合物中的量子点材料320为具有不同粒径颗粒的混合物，形成量子点材料320的量子点的尺寸为1-30nm。
步骤3、如图4所示，将TFT阵列基板100和彩色滤光片基板200进行对组，得到液晶盒。
步骤4、如图5所示，对所述液晶盒加热至其内的液晶材料310的清亮点后进行降温，当温度降至液晶材料310的蓝相温域时保持温度恒定，从TFT阵列基板100侧对液晶盒进行紫外光照射，使其内的可聚合单体330聚合形成聚合物网络，得到夹设于所述TFT阵列基板100和彩色滤光片基板200之间的液晶层300，此时，所述液晶层300内的液晶材料310为蓝相液晶。
值得一提的是，由于液晶组合物中的量子点材料320的粒径为纳米级别，可拓宽液晶材料310的蓝相温域，即在步骤4的可聚合单体330聚合前已拓了宽液晶材料310的蓝相温域，从而降低了该步骤4的可聚合单体330在蓝相温域聚合的精度要求，降低了聚合制程的难度。
具体地，步骤4中，对液晶盒的降温速度为0.01℃/min-2℃/min。
步骤5、如图6所示，在TFT阵列基板100上远离所述液晶层300一侧贴设下偏光片410，在彩色滤光片基板200上远离所述液晶层300一侧设贴上偏光片420，得到液晶显示面板1。
步骤6、提供背光模组2，将液晶显示面板1与背光模组2进行组合，完成液晶显示装置的制作。
具体地，所述背光模组2为发出蓝光背光的蓝光背光模组；可选的， 所述步骤2中提供的液晶组合物中量子点材料320也可不包括光致蓝色发光量子点。
具体地，该液晶显示装置制作方法制作的液晶显示装置为蓝相液晶液晶显示装置，由于蓝相液晶响应时间可小于1ms，所制作的液晶显示装置的响应速度得到提升，同时由于蓝相液晶的特性，该液晶显示装置的制作方法中无需进行配向层制程，能够降低制程的难度减少生产成本，可聚合单体330在液晶材料310处于蓝相温域时接收紫外光照射产生聚合，形成聚合物网络，能够稳定蓝相液晶，拓宽蓝相温域，降低了蓝相液晶应用的难度，量子点材料320作为纳米粒子，可拓宽液晶材料310的蓝相温域，即在可聚合单体330聚合前已拓液晶材料310的蓝相温域，使可聚合单体聚合制程的难度降低，并且能降低磁滞现象，实现零磁滞效果，同时由于量子点材料的特性，该液晶显示装置制作方法制作的液晶显示装置的背光的利用率及显示色域提高，提升液晶显示装置性能，使液晶显示装置可用于快速显示及3D显示领域。
综上所述，本发明的液晶显示装置，为蓝相液晶显示装置，无需配向层，形成液晶层的液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；所述可聚合单体在形成液晶层时在液晶材料的蓝相温域下聚合形成聚合物网络，能够稳定蓝相液晶、拓宽液晶材料的蓝相温域，所述量子点材料的粒径为纳米级别，能够拓宽蓝相液晶温域，即在可聚合单体聚合前已将液晶材料的蓝相温域拓宽，从而降低了聚合制程的温度精度要求，并且量子点材料可改善磁滞现象，同时提升了液晶显示装置的背光的利用率及显示色域，使该液晶显示装置可用于快速显示及3D显示领域。本发明提供的液晶显示装置的制作方法，形成液晶层的液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂，在液晶材料处于蓝相温域时利用紫外光对可聚合单体进行照射使其聚合形成聚合物网络，从而形成了具有宽温域、低磁滞效应的蓝相液晶显示装置，省去液晶显示装置中配向层的制作，降低成本，提高了液晶显示装置的响应速度，并且提高液晶显示装置的背光利用率及显示色域。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (13)

  1. 一种液晶显示装置，包括：液晶显示面板、及位于液晶显示面板下方的背光模组；
    所述液晶显示面板包括相对设置的TFT阵列基板和彩色滤光片基板、夹设于所述TFT阵列基板和彩色滤光片基板之间的液晶层、设于所述TFT阵列基板上远离所述液晶层一侧的下偏光片、及设于所述彩色滤光片基板上远离所述液晶层一侧的上偏光片；
    所述液晶层由一液晶组合物所形成，该液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；
    所述液晶层中的液晶材料为蓝相液晶；
    所述可聚合单体在形成液晶层时在所述液晶材料的蓝相温域下聚合形成聚合物网络。
  2. 如权利要求1所述的液晶显示装置，其中，所述可聚合单体在液晶组合物中的质量百分比浓度为0.1wt％-25wt％。
  3. 如权利要求1所述的液晶显示装置，其中，所述液晶组合物中的量子点材料包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；
    所述光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致蓝色发光量子点在液晶组合物中的质量百分比浓度为小于2wt％。
  4. 如权利要求3所述的液晶显示装置，其中，所述液晶组合物中的量子点材料为表面经过修饰具有配体分子的量子点，该量子点的材料为CdS，CSe，CTe，PbS，PbSe，PbTe，ZnS，ZnSe，ZnTe，HgS，HgSe，HgTe，GaS，GaSe，Gae，InS，InSe，InTe中的一种或多种，该量子点的尺寸为1-30nm。
  5. 如权利要求1所述的液晶显示装置，其中，所述TFT阵列基板包括：第一衬底基板、设于所述第一衬底基板上的TFT阵列、及设于所述TFT阵列上的电极层；
    所述彩色滤光片基板包括：第二衬底基板、设于所述第二衬底基板上的黑色矩阵、设于所述第二衬底基板及黑色矩阵上的彩色滤光层、及设于所述彩色滤光层上的柱状隔垫物；
    所述背光模组为蓝光背光模组。
  6. 一种液晶显示装置的制作方法，包括以下步骤：
    步骤1、提供一TFT阵列基板和一彩色滤光片基板；
    步骤2、提供一液晶组合物，将所述液晶组合物滴加在TFT阵列基板或彩色滤光片基板上；
    所述液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；
    此时，液晶组合物中的液晶材料为向列相液晶；
    步骤3、将TFT阵列基板和彩色滤光片基板对组，得到液晶盒；
    步骤4、对所述液晶盒加热至液晶材料的清亮点后进行降温，当温度降至液晶材料的蓝相温域时保持温度恒定，从TFT阵列基板侧对所述液晶盒进行紫外光照射，使其内的可聚合单体聚合形成聚合物网络，得到夹设于所述TFT阵列基板和彩色滤光片基板之间的液晶层，此时，所述液晶层内的液晶材料为蓝相液晶；
    步骤5、在所述TFT阵列基板上远离所述液晶层一侧贴设下偏光片，在所述彩色滤光片基板上远离所述液晶层一侧贴设上偏光片，得到液晶显示面板；
    步骤6、提供背光模组，将液晶显示面板与背光模组进行组合，完成液晶显示装置的制作。
  7. 如权利要求6所述的液晶显示装置的制作方法，其中，所述步骤2提供的液晶组合物中，所述量子点材料包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；
    所述光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致蓝色发光量子点在液晶组合物中的质量百分比浓度为小于2wt％；
    所述液晶组合物中的量子点材料为表面经过修饰具有配体分子的量子点，该量子点的材料为CdS，CSe，CTe，PbS，PbSe，PbTe，ZnS，ZnSe，ZnTe，HgS，HgSe，HgTe，GaS，GaSe，Gae，InS，InSe，InTe中的一种或多种，该量子点的尺寸为1-30nm。
  8. 如权利要求6所述的液晶显示装置的制作方法，其中，所述步骤2提供的液晶组合物，可聚合单体在液晶组合物中的质量百分比浓度为0.1wt％-25wt％。
  9. 如权利要求6所述的液晶显示装置的制作方法，其中，所述步骤4 中，对所述液晶盒的降温速度为0.01℃/min-2℃/min。
  10. 如权利要求6所述的液晶显示装置的制作方法，其中，所述TFT阵列基板包括：第一衬底基板、设于所述第一衬底基板上的TFT阵列、及设于所述TFT阵列上的电极层；
    所述彩色滤光片基板包括：第二衬底基板、设于所述第二衬底基板上的黑色矩阵、设于所述第二衬底基板及黑色矩阵上的彩色滤光层、及设于所述彩色滤光层上的柱状隔垫物；
    所述背光模组为蓝光背光模组。
  11. 一种液晶显示装置，包括：液晶显示面板、及位于液晶显示面板下方的背光模组；
    所述液晶显示面板包括相对设置的TFT阵列基板和彩色滤光片基板、夹设于所述TFT阵列基板和彩色滤光片基板之间的液晶层、设于所述TFT阵列基板上远离所述液晶层一侧的下偏光片、及设于所述彩色滤光片基板上远离所述液晶层一侧的上偏光片；
    所述液晶层由一液晶组合物所形成，该液晶组合物包括液晶材料、混合于所述液晶材料中的量子点材料、可聚合单体、及手性剂；
    所述液晶层中的液晶材料为蓝相液晶；
    所述可聚合单体在形成液晶层时在所述液晶材料的蓝相温域下聚合形成聚合物网络；
    其中，所述可聚合单体在液晶组合物中的质量百分比浓度为0.1wt％-25wt％；
    其中，所述液晶组合物中的量子点材料包括：光致红色发光量子点、光致绿色发光量子点、及光致蓝色发光量子点；
    所述光致红色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致绿色发光量子点在液晶组合物中的质量百分比浓度为0.01wt％-2wt％；所述光致蓝色发光量子点在液晶组合物中的质量百分比浓度为小于2wt％。
  12. 如权利要求11所述的液晶显示装置，其中，所述液晶组合物中的量子点材料为表面经过修饰具有配体分子的量子点，该量子点的材料为CdS，CSe，CTe，PbS，PbSe，PbTe，ZnS，ZnSe，ZnTe，HgS，HgSe，HgTe，GaS，GaSe，Gae，InS，InSe，InTe中的一种或多种，该量子点的尺寸为1-30nm。
  13. 如权利要求11所述的液晶显示装置，其中，所述TFT阵列基板包括：第一衬底基板、设于所述第一衬底基板上的TFT阵列、及设于所述TFT 阵列上的电极层；
    所述彩色滤光片基板包括：第二衬底基板、设于所述第二衬底基板上的黑色矩阵、设于所述第二衬底基板及黑色矩阵上的彩色滤光层、及设于所述彩色滤光层上的柱状隔垫物；
    所述背光模组为蓝光背光模组。
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