WO2022007146A1 - 一种液晶显示面板及其制备方法 - Google Patents

一种液晶显示面板及其制备方法 Download PDF

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Publication number
WO2022007146A1
WO2022007146A1 PCT/CN2020/111710 CN2020111710W WO2022007146A1 WO 2022007146 A1 WO2022007146 A1 WO 2022007146A1 CN 2020111710 W CN2020111710 W CN 2020111710W WO 2022007146 A1 WO2022007146 A1 WO 2022007146A1
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WIPO (PCT)
Prior art keywords
sub
grating
pixel
light
layer
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Ceased
Application number
PCT/CN2020/111710
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English (en)
French (fr)
Inventor
尹炳坤
黄长治
刘广辉
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US17/051,090 priority Critical patent/US11947207B2/en
Publication of WO2022007146A1 publication Critical patent/WO2022007146A1/zh
Anticipated expiration legal-status Critical
Priority to US18/591,459 priority patent/US12271074B2/en
Ceased legal-status Critical Current

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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
    • G02F1/133357—Planarisation layers
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G—PHYSICS
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    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • 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
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133553—Reflecting elements
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02F1/133302—Rigid substrates, e.g. inorganic substrates
    • 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
    • G02F1/133624—Illuminating devices characterised by their spectral emissions
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device

Definitions

  • the present application relates to the field of display panels, and in particular, to a liquid crystal display panel and a preparation method thereof.
  • liquid crystal display products have been widely used in all aspects of daily life, and the requirements for thinning and lightweighting of liquid crystal display modules have gradually increased.
  • the liquid crystal display module adopts the structure of a liquid crystal display panel and a backlight module.
  • the traditional side-illuminated backlight module is usually composed of independent optical films such as a reflective sheet, a light guide plate, a diffuser sheet, a prism sheet, etc., and the assembly process is not only complicated. , and it is difficult to achieve lightweight and thin modules.
  • An object of the present invention is to provide a liquid crystal display panel, which can solve the problem that the liquid crystal display panel in the prior art is difficult to achieve light and thin.
  • the present invention provides a liquid crystal display panel, which includes a pixel area, and a glass substrate, which is a light guide plate; a reflective layer, which is arranged on one side surface of the light guide plate; and a grating structure, which is arranged on the light guide plate away from On one side of the reflective layer, the position of the grating structure corresponds to the position of the pixel region; the flat layer is arranged on the side of the grating structure away from the light guide plate; the thin film transistor layer is arranged on the flat layer layer away from the side of the light guide plate.
  • the pixel area includes several pixel units, each pixel unit has several sub-pixels;
  • the grating structure has several grating units, each grating unit has sub-gratings, and each grating unit corresponds to in a pixel unit; in the grating unit and its corresponding pixel unit, each sub-grating corresponds to each sub-pixel.
  • the sub-grating includes several film layers, the red sub-pixel regions, green sub-pixel regions, blue sub-pixel regions
  • the thickness of the film layer of the sub-grating, the incidence angle of incident light and the refractive index of the film layer of the sub-grating control the wavelength of the outgoing light of the sub-grating.
  • the sub-grating in the red sub-pixel region emits light with a wavelength of 580nm-660nm
  • the sub-grating in the green sub-pixel region emits light with a wavelength of 500nm-580nm.
  • the sub-grating in the blue sub-pixel region emits light with a wavelength of 440nm-500nm.
  • a light shielding layer is provided between the sub-gratings.
  • a light source is included, which is provided on the side of the glass substrate.
  • it also includes a lower polarizer, which is arranged on a side of the thin film transistor layer away from the flat layer; a liquid crystal layer is arranged on a side of the lower polarizer away from the thin film transistor layer.
  • the second glass substrate is arranged on the side of the liquid crystal layer away from the lower polarizer; the upper polarizer is arranged on the side of the substrate away from the liquid crystal layer.
  • the present invention also provides a preparation method for preparing the liquid crystal display panel involved in the present invention.
  • the liquid crystal display panel includes a pixel area, and the preparation method includes the following steps: providing a glass substrate as a light guide plate; prepare a reflective layer on one side surface of the light guide plate; prepare a grating structure on the side of the light guide plate away from the reflective layer, the position of the grating structure corresponds to the position of the pixel area; prepare a flat The layer is on the side of the grating structure away from the light guide plate; the thin film transistor layer is prepared on the side of the flat layer away from the light guide plate.
  • the material used for the grating structure is silicon oxide
  • the silicon oxide is doped with a photosensitive material
  • the grating structure is prepared by chemical vapor deposition.
  • the pixel area includes several pixel units, each pixel unit has several sub-pixels;
  • the grating structure has several grating units, each grating unit has sub-gratings, and each grating unit corresponds to in a pixel unit; in the grating unit and its corresponding pixel unit, each sub-grating corresponds to each sub-pixel.
  • the sub-grating includes several film layers, the red sub-pixel regions, green sub-pixel regions, blue sub-pixel regions
  • the thickness of the film layer of the sub-grating, the incidence angle of incident light and the refractive index of the film layer of the sub-grating control the wavelength of the outgoing light of the sub-grating.
  • the step of preparing the grating structure includes: depositing a silicon oxide film doped with a photosensitive material on the side of the light guide plate away from the reflective layer, and fabricating the red sub-pixel area and the green sub-pixel area through exposing, developing and etching processes and the sub-gratings within the blue sub-pixel regions.
  • the sub-grating in the red sub-pixel region emits light with a wavelength of 580 nm-660 nm
  • the sub-grating in the green sub-pixel region emits light with a wavelength of 500 nm-580 nm
  • the blue sub-pixel region emits light with a wavelength of 500 nm-580 nm.
  • the inner sub-grating emits light with a wavelength of 440nm-500nm.
  • a light-shielding layer is also included between the sub-gratings, and the material of the light-shielding layer adopts an opaque material or a reflective material. Material.
  • the step of preparing the thin film transistor layer further includes: preparing a lower polarizer on the side of the thin film transistor layer away from the flat layer; preparing a liquid crystal layer on the lower polarizer away from all the the side of the thin film transistor layer; the second glass substrate is prepared on the side of the liquid crystal layer away from the lower polarizer; the upper polarizer is prepared on the side of the second glass substrate away from the liquid crystal layer.
  • the present invention provides a liquid crystal display panel and a preparation method thereof, by forming a grating on the upper surface of a glass substrate, by adjusting the thickness of the film layer of the sub-grating, the incident light
  • the angle of incidence and the refractive index of the film layer of the sub-gratings make the gratings in the red, green and blue sub-pixel regions pass red light, green light and blue light respectively, and the gratings that can transmit red, green and blue light can replace the existing
  • the red and green color resistance of the light-shielding layer between the gratings can replace the existing black matrix, so that the liquid crystal display panel does not need to be provided with a color filter substrate, thereby reducing the overall thickness of the liquid crystal display panel.
  • using the glass substrate in the array substrate as the light guide plate can further reduce the thickness of the liquid crystal display panel.
  • FIG. 1 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for manufacturing a liquid crystal display panel according to an embodiment of the present invention.
  • Reflective layer-10 Glass substrate-20;
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • FIG. 1 is a schematic structural diagram of a liquid crystal display panel 100 provided in this embodiment.
  • the liquid crystal display panel 100 includes a pixel area, a reflective layer 10, a glass substrate 20, a grating Structure 30, light shielding layer 40, flat layer 50, thin film transistor layer 60, lower polarizer 70, liquid crystal layer 80, second glass substrate 21 and upper polarizer 90, and a light source (not shown in the figure).
  • the light shielding layer 40 is arranged between the grating structures 30; the flat layer 50 is arranged on the grating structure 30; the thin film transistor layer 60 is arranged on the flat layer 50; the lower polarizer 70 is arranged on the thin film transistor layer 60; the liquid crystal layer 80 is arranged on the the lower polarizer 70 ; the second glass substrate 21 is arranged on the liquid crystal layer 80 ; the upper polarizer 90 is arranged on the substrate away from the liquid crystal layer 80 .
  • using the glass substrate 20 in the array substrate as the light guide plate can reduce the thickness of the liquid crystal display panel 100 .
  • the pixel area includes several pixel units, each pixel unit has several sub-pixels; the grating structure 30 has several grating units, each grating unit has a sub-grating 31, and each grating unit corresponds to a pixel unit; In the pixel unit, each sub-grating 31 corresponds to each sub-pixel.
  • the sub-pixels include red sub-pixels 101, green sub-pixels 102 and blue sub-pixels 103.
  • the sub-grating 31 in each sub-pixel includes several film layers with the same thickness, red sub-pixel 101, green sub-pixel 102, blue sub-pixel
  • the emission angle and the refractive index of the film layer of the sub-grating control the wavelength of the light emitted by the sub
  • the sub-grating 31 in the red sub-pixel 101 area emits light with a wavelength of 580 nm-660 nm
  • the sub-grating in the green sub-pixel 102 area emits light with a wavelength of 500 nm-580 nm
  • the sub-grating in the blue sub-pixel 103 area emits light with a wavelength of 440 nm -500nm light.
  • the wavelength of the outgoing light of the grating is controlled by adjusting the distance between the diffractive planes, the incident ray angle and the diffraction order, so that the gratings in the red, green, and blue sub-pixel regions pass through red light, green light, and green light respectively.
  • the grating that can transmit red, green and blue light can replace the existing red and green color resistance, and the light shielding layer between the grating can replace the existing black matrix, so that the liquid crystal display panel does not need to set the color filter substrate, and then The overall thickness of the liquid crystal display panel is reduced.
  • An embodiment of the present invention further provides a preparation method for preparing the liquid crystal display panel 100 involved in the present invention.
  • the liquid crystal display panel 100 includes a pixel area. Please refer to FIG. 2 , which shows the liquid crystal display panel provided in this embodiment.
  • the flow chart of the preparation method, the preparation method includes step 1-step 5.
  • Step 1 Provide a glass substrate 20 as a light guide plate. Wherein, step 1 further includes providing a light source, and the light source is located on the side of the glass substrate 20 .
  • Step 2 preparing the reflective layer 10 on one side surface of the light guide plate.
  • Step 3 The grating structure 30 is prepared on the side of the light guide plate away from the reflective layer 10, and the position of the grating structure 30 corresponds to the position of the pixel area.
  • the material used for the grating structure 30 is silicon oxide, and the silicon oxide is doped with a photosensitive material, and the grating structure 30 is prepared by chemical vapor deposition.
  • the pixel area includes several pixel units, each pixel unit has several sub-pixels; the grating structure 30 has several grating units, each grating unit has sub-gratings, and each grating unit corresponds to a pixel unit; between the grating unit and its corresponding pixel In the unit, each sub-grating and each sub-pixel correspond to a sub-pixel.
  • the sub-pixels include red sub-pixels 101, green sub-pixels 102 and blue sub-pixels 103.
  • the sub-grating 31 in each sub-pixel includes several film layers with the same thickness, red sub-pixel 101, green sub-pixel 102, blue sub-pixel
  • the emission angle and the refractive index of the film layer of the sub-grating control the wavelength of the light emitted by the sub
  • the step of preparing the grating structure 30 specifically includes: depositing a silicon oxide film doped with a photosensitive material on the side of the light guide plate away from the reflective layer 10, and fabricating the red sub-pixel 101 area, the green sub-pixel 102 area and the Sub-grating 31 within blue sub-pixel 103 region.
  • the sub-grating 31 in the red sub-pixel 101 area emits light with a wavelength of 580 nm-660 nm
  • the sub-grating in the green sub-pixel 102 area emits light with a wavelength of 500 nm-580 nm
  • the sub-grating in the blue sub-pixel 103 area emits light with a wavelength of 440 nm -500nm light.
  • Step 4 preparing the flat layer 50 on the side of the grating structure 30 away from the light guide plate.
  • Step 5 preparing the thin film transistor layer 60 on the side of the flat layer 50 away from the light guide plate.
  • a light shielding layer 40 is also prepared between the sub-gratings, and the material of the light shielding layer 40 is opaque material or reflective material.
  • the steps of preparing the thin film transistor layer 60 further include steps 6-9.
  • Step 6 preparing the lower polarizer 70 on the side of the thin film transistor layer 60 away from the flat layer 50 .
  • Step 7 preparing the liquid crystal layer 80 on the side of the lower polarizer 70 away from the thin film transistor layer 60 .
  • Step 8 preparing the second glass substrate 21 on the side of the liquid crystal layer 80 away from the lower polarizer 70 .
  • Step 9 preparing the upper polarizer 90 on the side of the second glass substrate 21 away from the liquid crystal layer 80 .
  • the present invention provides a liquid crystal display panel and a preparation method thereof.
  • a grating By forming a grating on the upper surface of a glass substrate, the thickness of the film layer of the sub-grating, the angle of incidence of incident light and the sub-grating are adjusted.
  • the refractive index of the film layer of the grating makes the gratings in the red, green and blue sub-pixel regions pass red light, green light and blue light respectively, and the gratings that can transmit red, green and blue light can replace the existing red and green color resistance,
  • the light shielding layer between the gratings can replace the existing black matrix, so that the liquid crystal display panel does not need to be provided with a color filter substrate, thereby reducing the overall thickness of the liquid crystal display panel.
  • using the glass substrate in the array substrate as the light guide plate can further reduce the thickness of the liquid crystal display panel.
  • a liquid crystal display panel and a manufacturing method thereof provided by the embodiments of the present application have been described in detail above.
  • the principles and implementations of the present application are described with specific examples. The descriptions of the above embodiments are only used to help understanding.
  • the technical solution of the present application and its core idea; those of ordinary skill in the art should understand that it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements , does not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

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Abstract

一种液晶显示面板（100），包括像素区；玻璃基板（20），为导光板；反射层（10），设于导光板的一侧表面；光栅结构（30），设于导光板远离反射层（10）的一侧，光栅结构（30）的位置与像素区的位置对应；平坦层（50），设于光栅结构（30）远离导光板的一侧；薄膜晶体管层（60），设于平坦层（50）远离导光板的一侧。还公开液晶显示面板（100）的制备方法。

Description

一种液晶显示面板及其制备方法 技术领域
本申请涉及显示面板领域，尤其地涉及一种液晶显示面板及其制备方法。
 背景技术
随着数字科技的发展，液晶显示产品已经广泛地应用在日常生活的各个层面中，对液晶显示模组的薄型化、轻量化要求也逐步提高。
现有技术中液晶显示模组采用液晶显示面板和背光模组架构，传统侧入式背光模组通常由反射片、导光板、扩散片、棱镜片等独立的光学膜片组成，不仅组装工序复杂，且难以实现模组的轻型化和薄型化。
因此，确有必要来开发一种新型的液晶显示面板，以克服现有技术的缺陷。
 技术问题
本发明的一个目的是提供一种液晶显示面板，其能够解决现有技术中液晶显示面板难以实现轻薄化的问题。
 技术解决方案
为实现上述目的，本发明提供一种液晶显示面板，包括像素区，以及玻璃基板，为导光板；反射层，设于所述导光板的一侧表面；光栅结构，设于所述导光板远离所述反射层的一侧，所述光栅结构的位置与所述像素区的位置对应；平坦层，设于所述光栅结构远离所述导光板的一侧；薄膜晶体管层，设于所述平坦层远离所述导光板的一侧。
进一步的，在其他实施方式中，其中所述像素区包括若干像素单元，每一像素单元具有若干子像素；所述光栅结构具有若干光栅单元，每一光栅单元具有子光栅，每一光栅单元对应于一像素单元；在所述光栅单元和其对应的所述像素单元之中，每一子光栅与每一子像素对应。
进一步的，在其他实施方式中，其中所述子像素包括红色子像素、绿色子像素和蓝色子像素，所述子光栅包括若干膜层，所述红色子像素区、绿色子像素区、蓝色子像素区内的所述子光栅的膜层的厚度和折射率不同，根据布拉格方程控制所述红色子像素区、绿色子像素和蓝色子像素内的所述子光栅出射波长；所述据布拉格方程为：2dsinθ=nλ，其中d为所述子光栅的膜层的厚度，θ为入射光线射角，n为所述子光栅的膜层的折射率，λ为出射波长，通过调节所述子光栅的膜层的厚度、入射光线射角和所述子光栅的膜层的折射率控制所述子光栅的出射光波长。
进一步的，在其他实施方式中，其中所述红色子像素区内的所述子光栅出射波长在580nm-660nm的光，所述绿色子像素区内的所述子光栅出射波长在500nm-580nm的光，所述蓝色子像素区内的所述子光栅出射波长440nm-500nm的光。
进一步的，在其他实施方式中，其中所述子光栅之间设置有遮光层。
进一步的，在其他实施方式中，其中包括光源，设于所述玻璃基板的侧边。
进一步的，在其他实施方式中，其中还包括下偏光片，设于所述薄膜晶体管层远离所述平坦层的一侧；液晶层，设于所述下偏光片远离所述薄膜晶体管层的一侧；第二玻璃基板，设于所述液晶层远离所述下偏光片的一侧；上偏光片，设于所述基板远离所述液晶层的一侧。
为实现上述目的，本发明还提供一种制备方法，用以制备本发明涉及的所述液晶显示面板，所述液晶显示面板包括像素区，所述制备方法包括以下步骤：提供一玻璃基板，作为导光板；制备反射层于所述导光板的一侧表面；制备光栅结构于所述导光板远离所述反射层的一侧，所述光栅结构的位置与所述像素区的位置对应；制备平坦层于所述光栅结构远离所述导光板的一侧；制备薄膜晶体管层于所述平坦层远离所述导光板的一侧。
进一步的，在其他实施方式中，其中所述光栅结构所用的材料为氧化硅，所述氧化硅中掺杂光敏材料，所述光栅结构是通过化学气相沉积方式制备的。
进一步的，在其他实施方式中，其中所述像素区包括若干像素单元，每一像素单元具有若干子像素；所述光栅结构具有若干光栅单元，每一光栅单元具有子光栅，每一光栅单元对应于一像素单元；在所述光栅单元和其对应的所述像素单元之中，每一子光栅与每一子像素对应。
进一步的，在其他实施方式中，其中所述子像素包括红色子像素、绿色子像素和蓝色子像素，所述子光栅包括若干膜层，所述红色子像素区、绿色子像素区、蓝色子像素区内的所述子光栅的膜层的厚度和折射率不同，根据布拉格方程控制所述红色子像素区、绿色子像素和蓝色子像素内的所述子光栅出射波长；所述据布拉格方程为：2dsinθ=nλ，其中d为所述子光栅的膜层的厚度，θ为入射光线射角，n为所述子光栅的膜层的折射率，λ为出射波长，通过调节所述子光栅的膜层的厚度、入射光线射角和所述子光栅的膜层的折射率控制所述子光栅的出射光波长。
其中制备光栅结构的步骤包括：沉积掺杂光敏材料的氧化硅薄膜于所述导光板远离所述反射层的一侧，通过曝光、显影、蚀刻工艺制作所述红色子像素区、绿色子像素区和蓝色子像素区内的所述子光栅。
其中所述红色子像素区内的所述子光栅出射波长在580nm-660nm的光，所述绿色子像素区内的所述子光栅出射波长在500nm-580nm的光，所述蓝色子像素区内的所述子光栅出射波长440nm-500nm的光。
进一步的，在其他实施方式中，其中在制备所述光栅结构和制备所述平坦层之间还包括制备遮光层于所述子光栅之间，所述遮光层的材料采用不透光材料或反光材料。
进一步的，在其他实施方式中，其中制备薄膜晶体管层的步骤后还包括：制备下偏光片于所述薄膜晶体管层远离所述平坦层的一侧；制备液晶层于所述下偏光片远离所述薄膜晶体管层的一侧；制备第二玻璃基板于所述液晶层远离所述下偏光片的一侧；制备上偏光片于所述第二玻璃基板远离所述液晶层的一侧。
 有益效果
相对于现有技术，本发明的有益效果在于：本发明提供一种液晶显示面板及其制备方法，通过在玻璃基板的上表面形成光栅，通过调节所述子光栅的膜层的厚度、入射光线射角和所述子光栅的膜层的折射率，使得红、绿、蓝子像素区内的光栅各通过红光、绿光和蓝光，可透过红、绿、蓝光的光栅可以替代现有的红绿色色阻，光栅之间的遮光层可以替代现有的黑色矩阵，使得液晶显示面板不用再设置彩膜基板，进而减薄液晶显示面板的整体厚度。
进一步地，将阵列基板中的玻璃基板作为导光板，可以进一步地降低液晶显示面板的厚度。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本发明实施例提供的液晶显示面板的结构示意图；
图2为本发明实施例提供的液晶显示面板的制备方法的流程图。
附图说明：
液晶显示面板-100；
反射层-10；玻璃基板-20；
光栅结构-30；子光栅-31；
遮光层-40
平坦层-50；薄膜晶体管层-60；
下偏光片-70；液晶层-80；
第二玻璃基板-21；上偏光片-90；
红色子像素-101；
绿色子像素-102；蓝色子像素-103。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本发明实施例提供一种液晶显示面板，请参阅图1，图1为本实施例提供的液晶显示面板100的结构示意图，液晶显示面板100包括像素区，以及反射层10、玻璃基板20、光栅结构30、遮光层40、平坦层50、薄膜晶体管层60、下偏光片70、液晶层80、第二玻璃基板21和上偏光片90，以及光源（图中未表示）。
玻璃基板20，作为导光板，光源位于导光板的侧边；反射层10涂布于玻璃基板20的下表面；光栅结构30设于导光板的上方，光栅结构30的位置与像素区的位置对应；遮光层40设于光栅结构30之间；平坦层50设于光栅结构30上；薄膜晶体管层60设于平坦层50上；下偏光片70设于薄膜晶体管层60上；液晶层80设于下偏光片70上；第二玻璃基板21设于液晶层80上；上偏光片90设于基板远离液晶层80上。
其中，将阵列基板中的玻璃基板20作为导光板，可以降低液晶显示面板100的厚度。
像素区包括若干像素单元，每一像素单元具有若干子像素；光栅结构30具有若干光栅单元，每一光栅单元具有子光栅31，每一光栅单元对应于一像素单元；在光栅单元和其对应的像素单元之中，每一子光栅31与每一子像素对应。
子像素包括红色子像素101、绿色子像素102和蓝色子像素103，每一子像素内的子光栅31包括若干厚度相同的膜层，红色子像素101、绿色子像素102、蓝色子像素103内的子光栅31的膜层的厚度和折射率不同，根据布拉格方程控制红色子像素101、绿色子像素102和蓝色子像素103内的子光栅31出射波长；据布拉格方程为：2dsinθ=nλ，其中d为子光栅各膜层的厚度，θ为入射光线射角，n为子光栅31的膜层的折射率，λ为出射波长，通过调节子光栅31的膜层的厚度、入射光线射角和子光栅的膜层的折射率控制子光栅31的出射光波长。
红色子像素101区内的子光栅31出射波长在580nm-660nm的光，绿色子像素102区内的子光栅出射波长在500nm-580nm的光，蓝色子像素103区内的子光栅出射波长440nm-500nm的光。
通过在玻璃基板20的上表面形成光栅，通过调节衍射面间距、入射线射角和衍射级数控制光栅的出射光波长，使得红、绿、蓝子像素区内的光栅各通过红光、绿光和蓝光，可透过红、绿、蓝光的光栅可以替代现有的红绿色色阻，光栅之间的遮光层可以替代现有的黑色矩阵，使得液晶显示面板不用再设置彩膜基板，进而减薄液晶显示面板的整体厚度。
本发明实施例还提供一种制备方法，用以制备本发明涉及的液晶显示面板100，液晶显示面板100包括像素区，请参阅图2，图2所示为本实施例提供的液晶显示面板的制备方法的流程图，制备方法包括步骤1-步骤5。
步骤1：提供一玻璃基板20，作为导光板。其中，步骤1中还包括提供一光源，光源位于玻璃基板20的侧边。
步骤2：制备反射层10于导光板的一侧表面。
步骤3：制备光栅结构30于导光板远离反射层10的一侧，光栅结构30的位置与像素区的位置对应。
光栅结构30所用的材料为氧化硅，氧化硅中掺杂光敏材料，光栅结构30是通过化学气相沉积方式制备的。
像素区包括若干像素单元，每一像素单元具有若干子像素；光栅结构30具有若干光栅单元，每一光栅单元具有子光栅，每一光栅单元对应于一像素单元；在光栅单元和其对应的像素单元之中，每一子光栅与每一子像素对应子像素。
子像素包括红色子像素101、绿色子像素102和蓝色子像素103，每一子像素内的子光栅31包括若干厚度相同的膜层，红色子像素101、绿色子像素102、蓝色子像素103内的子光栅31的膜层的厚度和折射率不同，根据布拉格方程控制红色子像素101、绿色子像素102和蓝色子像素103内的子光栅31出射波长；据布拉格方程为：2dsinθ=nλ，其中d为子光栅各膜层的厚度，θ为入射光线射角，n为子光栅31的膜层的折射率，λ为出射波长，通过调节子光栅31的膜层的厚度、入射光线射角和子光栅的膜层的折射率控制子光栅31的出射光波长。
其中制备光栅结构30的步骤具体包括：沉积掺杂光敏材料的氧化硅薄膜于导光板远离反射层10的一侧，通过曝光、显影、蚀刻工艺制作红色子像素101区、绿色子像素102区和蓝色子像素103区内的子光栅31。
红色子像素101区内的子光栅31出射波长在580nm-660nm的光，绿色子像素102区内的子光栅出射波长在500nm-580nm的光，蓝色子像素103区内的子光栅出射波长440nm-500nm的光。
步骤4：制备平坦层50于光栅结构30远离导光板的一侧。
步骤5：制备薄膜晶体管层60于平坦层50远离导光板的一侧。
在制备光栅结构30和制备平坦层50之间还包括制备遮光层40于子光栅之间，遮光层40的材料采用不透光材料或反光材料。
制备薄膜晶体管层60的步骤后还包括步骤6-步骤9。
步骤6：制备下偏光片70于薄膜晶体管层60远离平坦层50的一侧。
步骤7：制备液晶层80于下偏光片70远离薄膜晶体管层60的一侧。
步骤8：制备第二玻璃基板21于液晶层80远离下偏光片70的一侧。
步骤9：制备上偏光片90于第二玻璃基板21远离液晶层80的一侧。
本发明的有益效果在于：本发明提供一种液晶显示面板及其制备方法，通过在玻璃基板的上表面形成光栅，通过调节所述子光栅的膜层的厚度、入射光线射角和所述子光栅的膜层的折射率，使得红、绿、蓝子像素区内的光栅各通过红光、绿光和蓝光，可透过红、绿、蓝光的光栅可以替代现有的红绿色色阻，光栅之间的遮光层可以替代现有的黑色矩阵，使得液晶显示面板不用再设置彩膜基板，进而减薄液晶显示面板的整体厚度。
进一步地，将阵列基板中的玻璃基板作为导光板，可以进一步地降低液晶显示面板的厚度。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种液晶显示面板及其制备方法进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (10)

  1. 一种液晶显示面板，其中，包括像素区，以及
    玻璃基板，为导光板；
    反射层，设于所述导光板的一侧表面；
    光栅结构，设于所述导光板远离所述反射层的一侧，所述光栅结构的位置与所述像素区的位置对应；
    平坦层，设于所述光栅结构远离所述导光板的一侧；
    薄膜晶体管层，设于所述平坦层远离所述导光板的一侧。
  2. 根据权利要求1所述的液晶显示面板，其中，所述像素区包括若干像素单元，每一像素单元具有若干子像素；所述光栅结构具有若干光栅单元，每一光栅单元具有子光栅，每一光栅单元对应于一像素单元；在所述光栅单元和其对应的所述像素单元之中，每一子光栅与每一子像素对应。
  3. 根据权利要求2所述的液晶显示面板，其中，所述子像素包括红色子像素、绿色子像素和蓝色子像素，每一子像素内的所述子光栅包括若干厚度相同的膜层，所述红色子像素区、绿色子像素区、蓝色子像素区内的所述子光栅的膜层的厚度和折射率不同，根据布拉格方程控制所述红色子像素区、绿色子像素和蓝色子像素内的所述子光栅出射波长；所述据布拉格方程为：2dsinθ=nλ，其中d为所述子光栅的膜层的厚度，θ为入射光线射角，n为所述子光栅的膜层的折射率，λ为出射波长，通过调节所述子光栅的膜层的厚度、入射光线射角和所述子光栅的膜层的折射率控制所述子光栅的出射光波长。
  4. 根据权利要求3所述的液晶显示面板，其中，所述红色子像素区内的所述子光栅出射波长在580nm-660nm的光，所述绿色子像素区内的所述子光栅出射波长在500nm-580nm的光，所述蓝色子像素区内的所述子光栅出射波长440nm-500nm的光。
  5. 根据权利要求1所述的液晶显示面板，其中，还包括
    光源，设于所述玻璃基板的侧边。
  6. 一种制备方法，用以制备如权利要求1所述的液晶显示面板，所述液晶显示面板包括像素区，其中，包括以下步骤：
    提供一玻璃基板，作为导光板；
    制备反射层于所述导光板的一侧表面；
    制备光栅结构于所述导光板远离所述反射层的一侧，所述光栅结构的位置与所述像素区的位置对应；
    制备平坦层于所述光栅结构远离所述导光板的一侧；
    制备薄膜晶体管层于所述平坦层远离所述导光板的一侧。
  7. 根据权利要求6所述的制备方法，其中，所述光栅结构所用的材料为氧化硅，所述氧化硅中掺杂光敏材料，所述光栅结构是通过化学气相沉积方式制备的。
  8. 根据权利要求6所述的制备方法，其中，所述像素区包括若干像素单元，每一像素单元具有若干子像素；所述光栅结构具有若干光栅单元，每一光栅单元具有子光栅，每一光栅单元对应于一像素单元；在所述光栅单元和其对应的所述像素单元之中，每一子光栅与每一子像素对应；所述子像素包括红色子像素、绿色子像素和蓝色子像素，每一子像素内的所述子光栅包括若干厚度相同的膜层，所述红色子像素区、绿色子像素区、蓝色子像素区内的所述子光栅的膜层的厚度和折射率不同，根据布拉格方程控制所述红色子像素区、绿色子像素和蓝色子像素内的所述子光栅出射波长；所述据布拉格方程为：2dsinθ=nλ，其中d为所述子光栅的膜层的厚度，θ为入射光线射角，n为所述子光栅的膜层的折射率，λ为出射波长，通过调节所述子光栅的膜层的厚度、入射光线射角和所述子光栅的膜层的折射率控制所述子光栅的出射光波长。
  9. 根据权利要求8所述的制备方法，其中，所述红色子像素区内的所述子光栅出射波长在580nm-660nm的光，所述绿色子像素区内的所述子光栅出射波长在500nm-580nm的光，所述蓝色子像素区内的所述子光栅出射波长440nm-500nm的光。
  10. 根据权利要求8所述的制备方法，其中，在制备所述光栅结构和制备所述平坦层之间还包括
    制备遮光层于所述子光栅之间，所述遮光层的材料采用不透光材料或反光材料。
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