WO2017084175A1 - 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
WO2017084175A1
WO2017084175A1 PCT/CN2015/099105 CN2015099105W WO2017084175A1 WO 2017084175 A1 WO2017084175 A1 WO 2017084175A1 CN 2015099105 W CN2015099105 W CN 2015099105W WO 2017084175 A1 WO2017084175 A1 WO 2017084175A1
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Prior art keywords
liquid crystal
quantum rod
layer
crystal display
quantum
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English (en)
French (fr)
Inventor
韦宏权
王亚楠
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/908,548 priority Critical patent/US9874780B2/en
Publication of WO2017084175A1 publication Critical patent/WO2017084175A1/zh
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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
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0641—Nitrides
    • C23C14/0652—Silicon nitride
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/225—Oblique incidence of vaporised material on substrate
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
    • 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
    • G02F1/133528—Polarisers
    • G02F1/133533—Colour selective polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • 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 display technologies, and in particular, to a liquid crystal display device and a method of fabricating the same.
  • LCD Liquid crystal display
  • PDA personal digital assistant
  • digital camera computer screen Or laptop screens, etc.
  • a conventional liquid crystal display panel generally includes an array substrate, a color filter substrate disposed opposite to the array substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate, wherein the array substrate is attached with a lower polarizing plate.
  • An upper polarizing plate is attached to the color filter substrate.
  • the polarizing plate is an optical film which is composed of a plurality of polymer materials and has a function of generating polarized light. The function is to convert natural light without polarization into polarized light, thereby achieving penetration and blocking of the optical path for display purposes. .
  • the transmittance of the upper and lower polarizing plates to the backlight can theoretically be only 50% or less, and the light passes through the electrode layer, the color filter, the liquid crystal layer and the glass substrate of the liquid crystal panel.
  • the display brightness actually visible to the user is only less than 10% of the brightness of the light emitted by the backlight, and the transmittance of the light and the utilization rate of the backlight are relatively low.
  • Quantum Rod like Quantum Dot (QD), has a nanometer size. Since electrons and holes are quantum confined, the continuous band structure becomes a discrete level structure with molecular characteristics, and fluorescence can occur after excitation. By changing the size of the quantum rod, different wavelengths of light can be excited. It is a major characteristic that a quantum rod can emit polarized light when excited.
  • the quantum rod is a nano-scale semiconductor material, and the shape belongs to a one-dimensional structure.
  • the long-axis direction can absorb the unpolarized light and excite the polarized light longer than the wavelength of the original incident light source, and the light of the backlight can be high due to the high internal quantum efficiency. A large amount of converted to polarized light, after adjusting the long axis alignment direction of the quantum rod, the polarized light excited by the quantum rod can easily pass through the transmission axis of the polarizing plate on the liquid crystal panel.
  • vapor deposition refers to vapor deposition of the evaporation source perpendicular to the surface of the substrate, that is, in the normal direction of the substrate
  • oblique vapor deposition refers to the inorganic material such as silicon oxide (SiOx) on the normal side of the substrate.
  • SiOx silicon oxide
  • an alignment film 300 in which a plurality of trenches are obliquely arranged can be formed by oblique vapor deposition, and the alignment direction of the formed alignment film can be changed by controlling the size of the vapor deposition angle, as shown in FIG.
  • Parallel alignment can be achieved from 20 degrees to 45 degrees.
  • An object of the present invention is to provide a liquid crystal display device capable of improving light transmittance and backlight utilization, increasing display brightness, and saving production cost.
  • Another object of the present invention is to provide a method for fabricating a liquid crystal display device, which can improve light transmittance and backlight utilization, increase display brightness, and save production cost.
  • the present invention provides a liquid crystal display device including a liquid crystal display panel and a backlight disposed under the liquid crystal display panel;
  • the liquid crystal display panel includes a lower substrate, a quantum rod alignment layer disposed on the lower substrate, a quantum rod layer disposed on the quantum rod alignment layer, and an upper substrate disposed opposite the lower substrate, and disposed at the liquid crystal display panel An upper polarizing plate on a side of the substrate away from the lower substrate, a first liquid crystal alignment layer disposed on the quantum rod layer on a side of the lower substrate adjacent to the upper substrate, and a substrate disposed adjacent to the upper substrate a second liquid crystal alignment layer on the substrate side and a liquid crystal layer interposed between the first liquid crystal alignment layer and the second liquid crystal alignment layer;
  • the quantum rod orientation layer has a plurality of grooves arranged in parallel and extending in a direction perpendicular to a transmission axis direction of the upper polarizing plate;
  • the quantum rod layer includes a plurality of quantum rods, the long axis directions of the plurality of quantum rods being parallel to the extending direction of the grooves.
  • the quantum rod alignment layer is prepared by a tilt evaporation process, and the material is silicon oxide.
  • the vapor deposition angle of the oblique vapor deposition process is 20 degrees to 45 degrees.
  • the backlight is an ultraviolet backlight
  • the plurality of quantum rods are distributed according to different sizes to respectively excite red polarized light, green polarized light, and blue polarized light.
  • the backlight is a blue backlight
  • the plurality of quantum rods are distributed according to different sizes to respectively excite red polarized light and green polarized light.
  • the invention also provides a method for fabricating a liquid crystal display device, comprising the following steps:
  • Step 1 providing a substrate, prepared by oblique vapor deposition on the surface of the lower substrate a quantum rod orientation layer having a plurality of grooves arranged in parallel on the quantum rod alignment layer;
  • Step 2 coating a quantum rod solution on the quantum rod alignment layer to form a quantum rod layer, the quantum rod layer comprising a plurality of quantum rods, the plurality of quantum rods being aligned in parallel under the action of the quantum rod orientation layer, Thereby, the long axis directions of the plurality of quantum rods are all parallel to the extending direction of the trench;
  • Step 3 preparing a first liquid crystal alignment layer on the quantum rod layer
  • Step 4 providing an upper substrate, preparing a second liquid crystal alignment layer on one side of the upper substrate;
  • Step 5 forming the lower and upper substrates such that the first liquid crystal alignment layer and the second liquid crystal alignment layer are oppositely disposed, and liquid crystal is poured between the first liquid crystal alignment layer and the second liquid crystal alignment layer. Forming a liquid crystal layer;
  • Step 6 attaching a polarizing plate on a side of the upper substrate away from the lower substrate, the direction of the transmission axis of the upper polarizing plate being perpendicular to the extending direction of the groove, to obtain a liquid crystal display panel;
  • Step 7 Set a backlight under the liquid crystal display panel to obtain a liquid crystal display device.
  • the vapor deposition angle of the oblique vapor deposition process in the step 1 is 20 degrees to 45 degrees, and the material of the quantum rod alignment layer is silicon oxide.
  • the step 2 is to prepare a quantum rod solution by uniformly coating a quantum rod coated with a tri-n-octylphosphine oxide solvent on a quantum rod with a tri-n-octylphosphine oxide solvent.
  • the plurality of quantum rods in the step 2 are distributed according to different sizes to respectively emit red polarized light, green polarized light, and blue polarized light; and the backlight provided in the step 7 is an ultraviolet light backlight.
  • the plurality of quantum rods in the step 2 are distributed according to different sizes to respectively emit red polarized light and green polarized light; and the backlight provided in the step 7 is a blue light backlight.
  • the present invention also provides a liquid crystal display device including a liquid crystal display panel and a backlight disposed under the liquid crystal display panel;
  • the liquid crystal display panel includes a lower substrate, a quantum rod alignment layer disposed on the lower substrate, a quantum rod layer disposed on the quantum rod alignment layer, and an upper substrate disposed opposite the lower substrate, and disposed at the liquid crystal display panel An upper polarizing plate on a side of the substrate away from the lower substrate, a first liquid crystal alignment layer disposed on the quantum rod layer on a side of the lower substrate adjacent to the upper substrate, and a substrate disposed adjacent to the upper substrate a second liquid crystal alignment layer on the substrate side and a liquid crystal layer interposed between the first liquid crystal alignment layer and the second liquid crystal alignment layer;
  • the quantum rod orientation layer has a plurality of grooves arranged in parallel and extending in a direction perpendicular to a transmission axis direction of the upper polarizing plate;
  • the quantum rod layer includes a plurality of quantum rods, and a longitudinal direction of the plurality of quantum rods is parallel to an extending direction of the trench;
  • the quantum rod alignment layer is prepared by a tilt evaporation process, and the material is silicon oxide;
  • the evaporation evaporation angle of the oblique evaporation process is 20 degrees to 45 degrees;
  • the backlight is an ultraviolet backlight
  • the plurality of quantum rods are distributed according to different sizes to respectively excite red polarized light, green polarized light, and blue polarized light.
  • a liquid crystal display device provides parallel alignment of quantum rod layers by providing a quantum rod alignment layer, and a good quantum rod layer can replace a conventional lower polarizer, thereby improving light penetration. Rate and backlight utilization, increase display brightness and save production costs.
  • the invention provides a method for fabricating a liquid crystal display device, wherein a quantum rod orientation layer is prepared by a tilt evaporation process at a large angle, and the quantum rod alignment layer is formed with a plurality of parallel alignments and extending directions and an upper polarizing plate.
  • the parallel direction that is, the parallel alignment of the quantum rod layers, the well-aligned quantum rod layer can replace the traditional lower polarizing plate, thereby improving the light transmittance and the backlight utilization rate, increasing the display brightness, and saving the production cost.
  • Figure 1 is a schematic view of the principle of oblique evaporation
  • FIG. 2 is a schematic view of an alignment film obtained by oblique vapor deposition
  • FIG. 3 is a schematic view of an alignment film obtained by oblique evaporation of an evaporation angle between 20 degrees and 45 degrees;
  • FIG. 4 is a schematic structural view of a liquid crystal display device of the present invention.
  • FIG. 5 is a schematic view showing a polarization direction of an optical path of a liquid crystal display device of the present invention.
  • Fig. 6 is a flow chart showing a method of fabricating a liquid crystal display device of the present invention.
  • the present invention first provides a liquid crystal display device including a liquid crystal display panel 10 and a backlight 20 disposed under the liquid crystal display panel 10.
  • the liquid crystal display panel 10 includes a lower substrate 1 and a quantum rod disposed on the lower substrate 1 a layer 2, a quantum rod layer 3 provided on the quantum rod alignment layer 2, an upper substrate 6 disposed opposite to the lower substrate 1, and an upper substrate 6 disposed on a side of the upper substrate 6 away from the lower substrate 1 a polarizing plate 7, a first liquid crystal alignment layer 41 provided on the quantum rod layer 3 on a side of the lower substrate 1 adjacent to the upper substrate 6, and a side of the upper substrate 6 adjacent to the lower substrate 1
  • the second liquid crystal alignment layer 42 and the liquid crystal layer 5 interposed between the first liquid crystal alignment layer 41 and the second liquid crystal alignment layer 42.
  • the quantum rod alignment layer 2 has a plurality of nano-sized grooves 21 arranged in parallel and extending in a direction perpendicular to the transmission axis direction of the upper polarizing plate 7.
  • the quantum rod layer 3 includes a plurality of quantum rods 21, and the longitudinal direction of the plurality of quantum rods 21 is parallel to the extending direction of the trenches 21, that is, the quantum rod layer 3 is in the quantum rod alignment layer 2. Parallel alignment is achieved under the action.
  • one of the lower substrate 1 and the upper substrate 6 is an array substrate, and the other is a color filter substrate.
  • the specific structure of the array substrate and the color filter substrate is prior art, and expansion description will not be made here.
  • the material of the first liquid crystal alignment layer 41 and the second liquid crystal alignment layer 42 is usually polyimide (PI).
  • the quantum rod orientation layer 2 is prepared by a tilt evaporation process, the material is silicon oxide, and the vapor deposition angle of the oblique evaporation process is 20 degrees to 45 degrees, and the quantum rod orientation layer 2 is prepared at the evaporation angle. Parallel alignment can be achieved.
  • the backlight 20 can select an ultraviolet backlight, and the plurality of quantum rods 31 are matched with the ultraviolet backlight, and are distributed according to different sizes to respectively excite red polarized light, green polarized light, and blue polarized light.
  • the backlight 20 can also be selected as a blue backlight.
  • the plurality of quantum rods 31 are matched with the blue backlight, and are distributed according to different sizes to respectively excite red polarized light and green polarized light.
  • the light provided by the backlight 20 illuminates the quantum rod layer 3 to excite the plurality of quantum rods 31, and the polarization direction of the excited polarized light is consistent with the long axis direction of the quantum rod 31.
  • the long axis direction of the quantum rod 31 is parallel to the extending direction of the groove 21, and the extending direction of the groove 21 is again perpendicular to the transmission axis direction of the upper polarizing plate 7, that is, the plurality of quantum rods 31 are excited.
  • the polarization direction of the polarized light is perpendicular to the transmission axis direction of the upper polarizing plate 7, so that the well-aligned quantum rod layer 3 can replace the conventional lower polarizing plate, and the polarization direction is excited by the aligned quantum rod layer 3. Consistent polarized light can improve light transmittance and backlight utilization, increase display brightness, omit the lower polarizer, and save production costs.
  • the present invention further provides a method for fabricating a liquid crystal display device, including the following steps:
  • Step 1 the substrate 1 is provided, and a quantum rod orientation layer 2 is prepared on the surface of the lower substrate 1 by an oblique evaporation process.
  • the quantum rod alignment layer 2 is formed with a plurality of grooves 21 arranged in parallel.
  • the material of the quantum rod alignment layer 2 is silicon oxide, and the plurality of parallel-arranged trenches 21 are nano-scale trenches with uniform pitch.
  • the vapor deposition angle of the oblique vapor deposition process is 20 to 45 degrees, and the quantum rod alignment layer 2 produced at the vapor deposition angle can achieve parallel alignment.
  • Step 2 coating a quantum rod solution on the quantum rod orientation layer 2 to form a quantum rod layer 3, the quantum rod layer 3 comprising a plurality of quantum rods 31, and the plurality of quantum rods 31 in the quantum rod orientation layer 2
  • the parallel alignment is performed such that the long axis directions of the plurality of quantum rods 31 are both parallel to the extending direction of the trenches 21.
  • a tri-n-octylphosphine oxide (TOPO) solvent is first coated on the quantum rod, and the quantum rod coated with the tri-n-octylphosphine oxide solvent is uniformly dispersed in a toluene solvent to prepare a quantum rod solution.
  • the quantum rod solution is coated on the quantum rod orientation layer 2, and the quantum rods 31 are arranged along the lowest energy state due to the space displacement effect, that is, the long axis of the quantum rod 31 is neatly parallel along the extending direction of the groove 21. Arrangement, and finally the toluene solvent is completely evaporated at room temperature to form the quantum rod layer 3.
  • Step 3 Prepare a first liquid crystal alignment layer 41 on the quantum rod layer 2.
  • the material of the first liquid crystal alignment layer 41 is usually PI.
  • Step 4 An upper substrate 6 is provided, and a second liquid crystal alignment layer 42 is prepared on one side of the upper substrate 6.
  • one of the upper substrate 6 in the step 4 and the lower substrate 1 in the above step 1 is an array substrate, and the other is a color filter substrate.
  • the specific structure of the array substrate and the color filter substrate is prior art, and expansion description will not be made here.
  • the material of the second liquid crystal alignment layer 42 is usually PI.
  • Step 5 forming the lower and upper substrates 1, 6 such that the first liquid crystal alignment layer 41 and the second liquid crystal alignment layer 42 are oppositely disposed, and in the first liquid crystal alignment layer 41 and the second liquid crystal alignment layer Liquid crystal is poured between 42 to form a liquid crystal layer 5.
  • Step 6 attaching a polarizing plate 7 on a side of the upper substrate 6 away from the lower substrate 1.
  • the direction of the transmission axis of the upper polarizing plate 7 is perpendicular to the extending direction of the groove 21, thereby obtaining a liquid crystal display panel. 10.
  • Step 7 A backlight 20 is disposed under the liquid crystal display panel 10 to obtain a liquid crystal display device.
  • the backlight 20 can select an ultraviolet backlight, and then the plurality of quantum rods 31 of the quantum rod layer 3 prepared in the above step 2 are matched with the ultraviolet backlight, and are distributed according to different sizes. Red polarized light, green polarized light, and blue polarized light are respectively excited.
  • the backlight 20 can also be selected as a blue backlight. Then, the plurality of quantum rods 31 of the quantum rod layer 3 prepared in the above step 2 are matched with the blue backlight, and are distributed according to different sizes to respectively respectively emit red polarized light. And green polarized light.
  • the long axis direction of the quantum rod 31 is uniform, and the long axis direction of the quantum rod 31 is parallel to the extending direction of the groove 21, and the extending direction of the groove 21 is again perpendicular to the transmission axis direction of the upper polarizing plate 7.
  • the polarization direction of the polarized light excited by the plurality of quantum rods 31 is perpendicular to the transmission axis direction of the upper polarizing plate 7, so that the well-aligned quantum rod layer 3 can replace the conventional lower polarizing plate.
  • the well-aligned quantum rod layer 3 excites polarized light with uniform polarization directions to improve light transmittance and backlight utilization, increase display brightness, omit the lower polarizer, and save production costs.
  • the quantum rod layer is arranged in parallel by providing a quantum rod alignment layer, and the aligned quantum rod layer can replace the conventional lower polarizing plate, thereby improving light transmittance and backlight utilization. Rate, increase display brightness, and save production costs.
  • a quantum rod alignment layer is prepared by a tilt evaporation process at a large angle, and the quantum rod alignment layer is formed with a plurality of parallel alignments and extending directions and a transmission axis of the upper polarizing plate.
  • the quantum rod layer is parallelly aligned, and the well-aligned quantum rod layer can replace the traditional lower polarizing plate, thereby improving light transmittance and backlight utilization, increasing display brightness, and saving production cost.

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Abstract

一种液晶显示装置及其制作方法。液晶显示装置通过设置量子棒取向层(2)对量子棒层(3)进行平行配向，配向好的量子棒层(3)能够取代传统的下偏光板。液晶显示装置的制作方法，采用倾斜蒸镀工艺制备出量子棒取向层(2)，量子棒取向层(2)上形成有多条平行排列且延伸方向与上偏光板(7)的穿透轴方向垂直的沟槽(21)，再于量子棒取向层(2)上制备量子棒层(3)，制得的量子棒层(3)中的多个量子棒(31)的长轴方向与沟槽(21)的延伸方向平行，即量子棒层(3)平行配向，配向好的量子棒层(3)能够取代传统的下偏光板，从而能够提高光线穿透率及背光利用率，增加显示亮度，节约生产成本。

Description

液晶显示装置及其制作方法 技术领域
本发明涉及显示技术领域，尤其涉及一种液晶显示装置及其制作方法。
背景技术
液晶显示装置(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如：液晶电视、移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等，在平板显示领域中占主导地位。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶显示面板及背光模组，液晶显示面板本身并不发光，需将背光模组的光线折射出来产生画面。传统的液晶显示面板一般包括：阵列基板、与阵列基板相对贴合设置的彩膜基板及设于阵列基板与彩膜基板之间的液晶层，所述阵列基板上贴附有下偏光板，所述彩膜基板上贴附有上偏光板。偏光板是一种由多层高分子材料复合而成的具有产生偏振光功能的光学薄膜，作用是将不具偏振性的自然光转化为偏振光，实现光路的穿透与阻挡，以达到显示的目的。
针对现有的液晶显示装置，上、下两层偏光板对背光源的透光度理论上仅能达50％以下，光线再经过液晶面板的电极层、彩色滤光片、液晶层及玻璃基板等结构后，使用者实际可见的显示亮度，则仅剩下背光源所发出光线亮度的10％以下，光线的穿透率及背光源的利用率相当低。
量子棒(Quantum Rod，QR)和量子点(Quantum Dot，QD)一样，具有纳米尺寸。由于电子和空穴被量子限域，连续的能带结构变成具有分子特性的分立能级结构，受激后可以发生荧光。通过改变量子棒的尺寸，可以激发出不同波段的光。量子棒受激发时可以发出偏振光的特性，是其一重大特性。量子棒为纳米级半导体材料，形状属于一维结构，其长轴方向可吸收非偏振光线后激发出比原入射光源波长较长的偏振光线，且因内部量子效率高，故背光源的光线可大量转换为偏振光，经过调整量子棒的长轴配向方向，量子棒所激发的偏振光可易于通过液晶面板上的偏光板的穿透轴。
一般蒸镀指的是将蒸发源垂直于基板表面即在基板的法线方向上进行蒸镀，而倾斜蒸镀指的是将氧化硅(SiOx)等无机材料在与基板的法线方 向成某个角度的方向上进行蒸镀的工艺。请参阅图1，基板100竖直放置，无机蒸发源200设于基板100的斜下方，使得蒸发束与基板100的表面形成一个夹角，角度为θ，该夹角即为蒸镀角。请参阅图2，通过倾斜蒸镀能够形成多条沟槽倾斜排列的取向膜300，通过控制蒸镀角的大小可以改变形成的取向膜的配向方向，如图3所示，当蒸镀角在20度至45度时，可以实现平行配向。
发明内容
本发明的目的在于提供一种液晶显示装置，能够提高光线穿透率及背光利用率，增加显示亮度，节约生产成本。
本发明的目的还在于一种液晶显示装置的制作方法，能够提高光线穿透率及背光利用率，增加显示亮度，节约生产成本。
为实现上述目的，本发明提供了一种液晶显示装置，包括液晶显示面板、及设于所述液晶显示面板下方的背光源；
所述液晶显示面板包括下基板、设于所述下基板上的量子棒取向层、设于所述量子棒取向层上的量子棒层、与所述下基板相对设置的上基板、设于所述上基板远离所述下基板一侧的上偏光板、于所述下基板靠近所述上基板一侧设于所述量子棒层上的第一液晶配向层、设于所述上基板靠近所述下基板一侧的第二液晶配向层、及夹设于所述第一液晶配向层与第二液晶配向层之间的液晶层；
所述量子棒取向层具有多条平行排列且延伸方向与上偏光板的穿透轴方向垂直的沟槽；
所述量子棒层包括多个量子棒，所述多个量子棒的长轴方向均与所述沟槽的延伸方向平行。
所述量子棒取向层采用倾斜蒸镀工艺制备，材料为氧化硅。
所述倾斜蒸镀工艺的蒸镀角为20度至45度。
所述背光源为紫外光背光源；
所述多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光。
所述背光源为蓝光背光源；
所述多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、及绿色偏振光。
本发明还提供一种液晶显示装置的制作方法，包括如下步骤：
步骤1、提供一下基板，在所述下基板的表面上通过倾斜蒸镀工艺制备 出量子棒取向层，所述量子棒取向层上形成有多条平行排列的沟槽；
步骤2、在所述量子棒取向层上涂布量子棒溶液，形成量子棒层，所述量子棒层包括多个量子棒，所述多个量子棒在量子棒取向层的作用下平行配向，从而所述多个量子棒的长轴方向均与所述沟槽的延伸方向平行；
步骤3、在所述量子棒层上制备第一液晶配向层；
步骤4、提供一上基板，在所述上基板的一侧制备第二液晶配向层；
步骤5、组立所述下、上基板，使所述第一液晶配向层与第二液晶配向层相对设置，并在所述第一液晶配向层与第二液晶配向层之间灌入液晶，形成液晶层；
步骤6、在所述上基板远离下基板的一侧贴附上偏光板，所述上偏光板的穿透轴方向与所述沟槽的延伸方向垂直，制得液晶显示面板；
步骤7、在所述液晶显示面板下设置背光源，制得液晶显示装置。
所述步骤1中倾斜蒸镀工艺的蒸镀角为20度至45度，所述量子棒取向层的材料为氧化硅。
所述步骤2通过在量子棒上涂覆三正辛基氧化磷溶剂，并将涂覆有三正辛基氧化磷溶剂的量子棒均匀分散于甲苯溶剂中制得量子棒溶液。
所述步骤2中的多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光；所述步骤7中设置的背光源为紫外光背光源。
所述步骤2中的多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、及绿色偏振光；所述步骤7中设置的背光源为蓝光背光源。
本发明还提供一种液晶显示装置，包括液晶显示面板、及设于所述液晶显示面板下方的背光源；
所述液晶显示面板包括下基板、设于所述下基板上的量子棒取向层、设于所述量子棒取向层上的量子棒层、与所述下基板相对设置的上基板、设于所述上基板远离所述下基板一侧的上偏光板、于所述下基板靠近所述上基板一侧设于所述量子棒层上的第一液晶配向层、设于所述上基板靠近所述下基板一侧的第二液晶配向层、及夹设于所述第一液晶配向层与第二液晶配向层之间的液晶层；
所述量子棒取向层具有多条平行排列且延伸方向与上偏光板的穿透轴方向垂直的沟槽；
所述量子棒层包括多个量子棒，所述多个量子棒的长轴方向均与所述沟槽的延伸方向平行；
其中，所述量子棒取向层采用倾斜蒸镀工艺制备，材料为氧化硅；
其中，所述倾斜蒸镀工艺的蒸镀角为20度至45度；
其中，所述背光源为紫外光背光源；
所述多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光。
本发明的有益效果：本发明提供的一种液晶显示装置，通过设置量子棒取向层对量子棒层进行平行配向，配向好的量子棒层能够取代传统的下偏光板，从而能够提高光线穿透率及背光利用率，增加显示亮度，节约生产成本。本发明提供的一种液晶显示装置的制作方法，采用大角度下的倾斜蒸镀工艺制备出量子棒取向层，所述量子棒取向层上形成有多条平行排列且延伸方向与上偏光板的穿透轴方向垂直的沟槽，再利用空间排挤效应于所述量子棒取向层上制备量子棒层，制得的量子棒层中的多个量子棒的长轴方向与所述沟槽的延伸方向平行，即量子棒层平行配向，该配向好的量子棒层能够取代传统的下偏光板，从而能够提高光线穿透率及背光利用率，增加显示亮度，节约生产成本。
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为倾斜蒸镀的原理示意图；
图2为通过倾斜蒸镀获得的取向膜的示意图；
图3为通过蒸镀角在20度至45度之间的倾斜蒸镀获得的取向膜的示意图；
图4为本发明的液晶显示装置的结构示意图；
图5为本发明的液晶显示装置的光路偏振方向示意图；
图6为本发明的液晶显示装置的制作方法的流程图。
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。
请同时参阅图4与图5，本发明首先提供一种液晶显示装置，包括液晶显示面板10及设于所述液晶显示面板10下方的背光源20。
所述液晶显示面板10包括下基板1、设于所述下基板1上的量子棒取 向层2、设于所述量子棒取向层2上的量子棒层3、与所述下基板1相对设置的上基板6、设于所述上基板6远离所述下基板1一侧的上偏光板7、于所述下基板1靠近所述上基板6一侧设于所述量子棒层3上的第一液晶配向层41、设于所述上基板6靠近所述下基板1一侧的第二液晶配向层42、及夹设于所述第一液晶配向层41与第二液晶配向层42之间的液晶层5。所述量子棒取向层2具有多条平行排列且延伸方向与上偏光板7的穿透轴方向垂直的纳米级别的沟槽21。
所述量子棒层3包括多个量子棒21，所述多个量子棒21的长轴方向均与所述沟槽21的延伸方向平行，即所述量子棒层3在量子棒取向层2的作用下实现了平行配向。
具体地，所述下基板1与上基板6的其中之一为阵列基板，另一个为彩膜基板。阵列基板及彩膜基板的具体结构为现有技术，此处不进行展开描述。
所述第一液晶配向层41与第二液晶配向层42的材料通常为聚酰亚胺(polyimide，PI)。
所述量子棒取向层2采用倾斜蒸镀工艺制备，材料为氧化硅，所述倾斜蒸镀工艺的蒸镀角为20度至45度，在该蒸镀角下制得的量子棒取向层2可以实现平行配向。
所述背光源20可选择紫外光背光源，所述多个量子棒31与紫外光背光源匹配，按照不同尺寸分布，以分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光。
所述背光源20还可以选择为蓝光背光源，所述多个量子棒31与蓝光背光源匹配，按照不同尺寸分布，以分别对应激发出红色偏振光、及绿色偏振光。
结合图4与图5，背光源20提供的光线照射所述量子棒层3，激发所述多个量子棒31，激发出的偏振光的偏振方向与量子棒31的长轴方向一致，而所述量子棒31的长轴方向与所述沟槽21的延伸方向平行，沟槽21的延伸方向又与所述上偏光板7的穿透轴方向垂直，即所述多个量子棒31激发出的偏振光的偏振方向与所述上偏光板7的穿透轴方向垂直，从而该配向好的量子棒层3可以取代传统的下偏光板，由该配向好的量子棒层3激发出偏振方向一致的偏振光能够提高光线穿透率及背光利用率，增加显示亮度，省略下偏光板，节约生产成本。
请参阅图6，结合图4与图5，本发明还提供一种液晶显示装置的制作方法，包括如下步骤：
步骤1、提供一下基板1，在所述下基板1的表面上通过倾斜蒸镀工艺制备出量子棒取向层2，所述量子棒取向层2上形成有多条平行排列的沟槽21。
具体地，所述量子棒取向层2的材料为氧化硅，所述多条平行排列的沟槽21为间距均匀的纳米级沟槽。
所述倾斜蒸镀工艺的蒸镀角为20度至45度，在该蒸镀角下制得的量子棒取向层2可以实现平行配向。
步骤2、在所述量子棒取向层2上涂布量子棒溶液，形成量子棒层3，所述量子棒层3包括多个量子棒31，所述多个量子棒31在量子棒取向层2的作用下平行配向，从而所述多个量子棒31的长轴方向均与所述沟槽21的延伸方向平行。
具体地，该步骤2首先在量子棒上涂覆三正辛基氧化磷(TOPO)溶剂，再将涂覆有三正辛基氧化磷溶剂的量子棒均匀分散于甲苯溶剂中，制得量子棒溶液，将量子棒溶液涂布在量子棒取向层2上，由于空间排挤效应，量子棒31会沿着能量最低的状态排列，即量子棒31的长轴沿着沟槽21的延伸方向整齐地平行排列，最后将甲苯溶剂在室温下挥发完全，形成所述量子棒层3。
步骤3、在所述量子棒层2上制备第一液晶配向层41。
具体地，所述第一液晶配向层41的材料通常为PI。
步骤4、提供一上基板6，在所述上基板6的一侧制备第二液晶配向层42。
具体地，该步骤4中的上基板6与上述步骤1中的下基板1的其中之一为阵列基板，另一个为彩膜基板。阵列基板及彩膜基板的具体结构为现有技术，此处不进行展开描述。
所述第二液晶配向层42的材料通常为PI。
步骤5、组立所述下、上基板1、6，使所述第一液晶配向层41与第二液晶配向层42相对设置，并在所述第一液晶配向层41与第二液晶配向层42之间灌入液晶，形成液晶层5。
步骤6、在所述上基板6远离下基板1的一侧贴附上偏光板7，所述上偏光板7的穿透轴方向与所述沟槽21的延伸方向垂直，制得液晶显示面板10。
步骤7、在所述液晶显示面板10下设置背光源20，制得液晶显示装置。
具体地，所述背光源20可选择紫外光背光源，那么上述步骤2制得的量子棒层3的多个量子棒31与紫外光背光源匹配，按照不同尺寸分布，以 分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光。
所述背光源20还可以选择为蓝光背光源，那么上述步骤2制得的量子棒层3的多个量子棒31与蓝光背光源匹配，按照不同尺寸分布，以分别对应激发出红色偏振光、及绿色偏振光。
经上述方法制得的液晶显示装置，结合图4与图5，其背光源20提供的光线照射所述量子棒层3，激发所述多个量子棒31，激发出的偏振光的偏振方向与量子棒31的长轴方向一致，而所述量子棒31的长轴方向与所述沟槽21的延伸方向平行，沟槽21的延伸方向又与所述上偏光板7的穿透轴方向垂直，即所述多个量子棒31激发出的偏振光的偏振方向与所述上偏光板7的穿透轴方向垂直，从而该配向好的量子棒层3可以取代传统的下偏光板，由该配向好的量子棒层3激发出偏振方向一致的偏振光能够提高光线穿透率及背光利用率，增加显示亮度，省略下偏光板，节约生产成本。
综上所述，本发明的液晶显示装置，通过设置量子棒取向层对量子棒层进行平行配向，配向好的量子棒层能够取代传统的下偏光板，从而能够提高光线穿透率及背光利用率，增加显示亮度，节约生产成本。本发明的液晶显示装置的制作方法，采用大角度下的倾斜蒸镀工艺制备出量子棒取向层，所述量子棒取向层上形成有多条平行排列且延伸方向与上偏光板的穿透轴方向垂直的沟槽，再利用空间排挤效应于所述量子棒取向层上制备量子棒层，制得的量子棒层中的多个量子棒的长轴方向与所述沟槽的延伸方向平行，即量子棒层平行配向，该配向好的量子棒层能够取代传统的下偏光板，从而能够提高光线穿透率及背光利用率，增加显示亮度，节约生产成本。
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权利要求的保护范围。

Claims (11)

  1. 一种液晶显示装置，包括液晶显示面板、及设于所述液晶显示面板下方的背光源；
    所述液晶显示面板包括下基板、设于所述下基板上的量子棒取向层、设于所述量子棒取向层上的量子棒层、与所述下基板相对设置的上基板、设于所述上基板远离所述下基板一侧的上偏光板、于所述下基板靠近所述上基板一侧设于所述量子棒层上的第一液晶配向层、设于所述上基板靠近所述下基板一侧的第二液晶配向层、及夹设于所述第一液晶配向层与第二液晶配向层之间的液晶层；
    所述量子棒取向层具有多条平行排列且延伸方向与上偏光板的穿透轴方向垂直的沟槽；
    所述量子棒层包括多个量子棒，所述多个量子棒的长轴方向均与所述沟槽的延伸方向平行。
  2. 如权利要求1所述的液晶显示装置，其中，所述量子棒取向层采用倾斜蒸镀工艺制备，材料为氧化硅。
  3. 如权利要求2所述的液晶显示装置，其中，所述倾斜蒸镀工艺的蒸镀角为20度至45度。
  4. 如权利要求1所述的液晶显示装置，其中，所述背光源为紫外光背光源；
    所述多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光。
  5. 如权利要求1所述的液晶显示装置，其中，所述背光源为蓝光背光源；
    所述多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、及绿色偏振光。
  6. 一种液晶显示装置的制作方法，包括如下步骤：
    步骤1、提供一下基板，在所述下基板的表面上通过倾斜蒸镀工艺制备出量子棒取向层，所述量子棒取向层上形成有多条平行排列的沟槽；
    步骤2、在所述量子棒取向层上涂布量子棒溶液，形成量子棒层，所述量子棒层包括多个量子棒所述多个量子棒在量子棒取向层的作用下平行配向，从而所述多个量子棒的长轴方向均与所述沟槽的延伸方向平行；
    步骤3、在所述量子棒层上制备第一液晶配向层；
    步骤4、提供一上基板，在所述上基板的一侧制备第二液晶配向层；
    步骤5、组立所述下、上基板，使所述第一液晶配向层与第二液晶配向层相对设置，并在所述第一液晶配向层与第二液晶配向层之间灌入液晶，形成液晶层；
    步骤6、在所述上基板远离下基板的一侧贴附上偏光板，所述上偏光板的穿透轴方向与所述沟槽的延伸方向垂直，制得液晶显示面板；
    步骤7、在所述液晶显示面板下设置背光源，制得液晶显示装置。
  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1中倾斜蒸镀工艺的蒸镀角为20度至45度，所述量子棒取向层的材料为氧化硅。
  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通过在量子棒上涂覆三正辛基氧化磷溶剂，并将涂覆有三正辛基氧化磷溶剂的量子棒均匀分散于甲苯溶剂中制得量子棒溶液。
  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2中的多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光；所述步骤7中设置的背光源为紫外光背光源。
  10. 如权利要求6所述的液晶显示装置的制作方法，其中，所述步骤2中的多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、及绿色偏振光；所述步骤7中设置的背光源为蓝光背光源。
  11. 一种液晶显示装置，包括液晶显示面板、及设于所述液晶显示面板下方的背光源；
    所述液晶显示面板包括下基板、设于所述下基板上的量子棒取向层、设于所述量子棒取向层上的量子棒层、与所述下基板相对设置的上基板、设于所述上基板远离所述下基板一侧的上偏光板、于所述下基板靠近所述上基板一侧设于所述量子棒层上的第一液晶配向层、设于所述上基板靠近所述下基板一侧的第二液晶配向层、及夹设于所述第一液晶配向层与第二液晶配向层之间的液晶层；
    所述量子棒取向层具有多条平行排列且延伸方向与上偏光板的穿透轴方向垂直的沟槽；
    所述量子棒层包括多个量子棒，所述多个量子棒的长轴方向均与所述沟槽的延伸方向平行；
    其中，所述量子棒取向层采用倾斜蒸镀工艺制备，材料为氧化硅；
    其中，所述倾斜蒸镀工艺的蒸镀角为20度至45度；
    其中，所述背光源为紫外光背光源；
    所述多个量子棒按照不同尺寸分布，以分别对应激发出红色偏振光、绿色偏振光、及蓝色偏振光。
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