WO2021227640A1 - 阵列基板及其液晶显示面板 - Google Patents

阵列基板及其液晶显示面板 Download PDF

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Publication number
WO2021227640A1
WO2021227640A1 PCT/CN2021/080591 CN2021080591W WO2021227640A1 WO 2021227640 A1 WO2021227640 A1 WO 2021227640A1 CN 2021080591 W CN2021080591 W CN 2021080591W WO 2021227640 A1 WO2021227640 A1 WO 2021227640A1
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Prior art keywords
electrode
liquid crystal
array substrate
strip
plane
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PCT/CN2021/080591
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English (en)
French (fr)
Inventor
赵彦礼
李晓吉
吴海龙
陈刚
孙贺
王迪
王玉
Original Assignee
京东方科技集团股份有限公司
重庆京东方光电科技有限公司
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Priority to US17/628,149 priority Critical patent/US11822186B2/en
Publication of WO2021227640A1 publication Critical patent/WO2021227640A1/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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • 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
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • 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
    • G02F1/133509—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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • 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
    • G02F1/137—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

Definitions

  • the present disclosure relates to the technical field of display devices, and in particular to an array substrate and a liquid crystal display panel thereof.
  • TFT-LCD Thin Film Transistor-Liquid Crystal Display
  • IPS In Plane Switching
  • ADS Advanced Super Dimension Switch
  • the ADS mode liquid crystal display has been widely used due to its wide viewing angle, high aperture ratio, high transmittance, high resolution, fast response speed, low power consumption, low chromatic aberration, etc., and has become one of the important technologies in the field of liquid crystal display. one.
  • a first aspect of the embodiments of the present disclosure provides an array substrate, including a base, the base having a plurality of pixel regions arranged in an array, and each of the pixel regions includes:
  • the second electrode is located on a side of the first electrode away from the substrate; an electric field is formed between the second electrode and the first electrode, the second electrode includes a slit electrode, and the slit
  • the electrode includes a slit portion and an electrode portion located between adjacent slit portions.
  • the electrode portion includes at least a first strip portion and a second strip portion. The extending directions of the second strip-shaped portions intersect, and the first strip-shaped portion and the second strip-shaped portion of each electrode portion are connected at the bending portion;
  • the insulating protrusion is located on the side of the second electrode away from the first electrode; the orthographic projection of the bent portion of the second electrode on the plane where the base is located is located on the plane where the insulating protrusion is on the base Within the orthographic projection;
  • the reflective electrode is located on the side of the insulating protrusion away from the second electrode; an electric field is formed between the reflective electrode and the second electrode, and the orthographic projection of the reflective electrode on the plane where the substrate is located is
  • the insulating protrusion is in an orthographic projection of the plane where the substrate is located.
  • the reflective electrode is electrically connected to the first electrode.
  • the first electrode is a common electrode
  • the second electrode is a pixel electrode
  • the insulating protrusions extend in the row direction, and the orthographic projection of the bent portions of the second electrodes of the pixel regions of one row on the plane where the substrate is located is located in a corresponding row of the insulating protrusions in the row direction. In the orthographic projection of the plane where the base is located.
  • the reflective electrodes extend in a row direction, and the orthographic projection of a row of the reflective electrodes on the plane where the substrate is located is in a corresponding row of the orthographic projections of the insulating protrusions on the plane where the substrate is located.
  • the common electrode of each of the pixel regions is connected to form a surface electrode.
  • the dielectric constant of the insulating protrusion is 20-30; and/or the material of the insulating protrusion includes: at least one of TiO 2 nanoparticles, Ti 2 O 5 nanoparticles, and BaTiO 3 nanoparticles A sort of.
  • the width range of the electrode part includes: 2 ⁇ m to 6 ⁇ m; and/or the width range of the slit part includes: 2 ⁇ m to 8 ⁇ m.
  • the ratio of the height of the insulating protrusion to the thickness of the liquid crystal layer ranges from 0.4 to 0.6.
  • the distance between the same side edge of the reflective electrode and the same side edge of the insulating protrusion includes: 0.3 ⁇ m to 0.8 ⁇ m.
  • a second aspect of the embodiments of the present disclosure provides a liquid crystal display panel, including: a color filter substrate, the array substrate described in any one of the above, and a liquid crystal layer disposed between the color filter substrate and the array substrate.
  • the material of the liquid crystal layer is blue phase liquid crystal.
  • a third aspect of the embodiments of the present disclosure provides a display device including: the liquid crystal display panel described in any one of the above.
  • an electric field is suitable for forming an electric field between the second electrode and the first electrode, and an electric field is also suitable for forming an electric field between the reflective electrode and the second electrode, so that the liquid crystal display panel displays a picture with a gray scale other than 0.
  • the ambient light can be effectively used to increase the transmittance of the liquid crystal display panel, increase the aperture ratio of the liquid crystal display panel, and adjust the transmitted light according to the intensity of the ambient light.
  • FIG. 1 is a schematic diagram showing a cross-sectional structure of a liquid crystal display panel according to an embodiment of the present disclosure
  • FIG. 2 is a schematic top view of the structure of the array substrate in FIG. 1;
  • FIG. 3 is a schematic top view of the array substrate in FIG. 2 after removing the insulating protrusions and reflective electrodes;
  • Figure 4 is a cross-sectional view taken along line AA in Figure 2;
  • FIG. 5 is a driving principle diagram of the liquid crystal display panel in FIG. 1;
  • FIG. 6 is a schematic diagram of the light transmission of the backlight source and the reflection of ambient light when the liquid crystal display panel in FIG. 1 is driven;
  • Figure 7 is a diagram showing the relationship between transmittance and driving voltage
  • FIG. 8 is a schematic diagram showing a cross-sectional structure of a liquid crystal display panel according to another embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of the light transmission of the backlight source and the reflection of ambient light when the liquid crystal display panel in FIG. 8 is not driven.
  • the working principle of ADS mode display is to use slit electrodes to generate a multi-dimensional electric field to drive the deflection of the liquid crystal.
  • the electrode part of the slit electrode is set to include strip electrodes with different orientations. Forming electric fields in multiple directions, and then driving the liquid crystal molecules to display multi-domains.
  • FIG. 1 is a schematic diagram showing a cross-sectional structure of a liquid crystal display panel according to an embodiment of the present disclosure.
  • FIG. 2 is a schematic top view of the structure of the array substrate in FIG. 1.
  • 3 is a schematic top view of the array substrate in FIG. 2 after removing the insulating protrusions and reflective electrodes.
  • Fig. 4 is a cross-sectional view taken along line AA in Fig. 2.
  • the liquid crystal display panel 1 includes:
  • the liquid crystal layer 13 is disposed between the color filter substrate 11 and the array substrate 12;
  • the first polarizer 14 is arranged on the side of the color filter substrate 11 away from the liquid crystal layer 13;
  • the second polarizer 15 is arranged on the side of the array substrate 12 away from the liquid crystal layer 13.
  • the material of the liquid crystal layer 13 may be Nematic liquid crystal.
  • a first alignment layer (not shown) may be provided on the side of the color filter substrate 11 facing the liquid crystal layer 13
  • a second alignment layer (not shown) may be provided on the side of the array substrate 12 facing the liquid crystal layer 13 , The first alignment layer and the second alignment layer are used to make the liquid crystal molecules have an initial deflection angle.
  • a backlight source (not shown) may be provided on the side of the second polarizer 15 away from the array substrate 12.
  • the polarization directions of the first polarizer 14 and the second polarizer 15 may be perpendicular to allow light from the backlight source to selectively pass through the liquid crystal display panel 1.
  • the first polarizer 14 and/or the second polarizer 15 may be replaced with other structures that can realize light polarization.
  • the array substrate 12 includes a base 120.
  • the base 120 has a plurality of pixel regions 120a arranged in an array, and each pixel region 120a includes:
  • the second electrode 122 is located on the side of the first electrode 121 away from the substrate 120; an electric field is formed between the second electrode 122 and the first electrode 121, the second electrode 122 includes a slit electrode 123, and the slit electrode 123 includes a slit
  • the electrode portion 123b includes at least a first strip portion 124a and a second strip portion 124b. The extending directions of the portions 124b intersect, and the first strip portion 124a and the second strip portion 124b of each electrode portion 123b are connected at the bending portion 124c;
  • the insulating protrusion 125 is located on the side of the second electrode 122 away from the first electrode 121; the orthographic projection of the bent portion 124c of the second electrode 122 on the plane of the substrate 120 is located in the orthographic projection of the insulating protrusion 125 on the plane of the substrate 120 ;
  • the reflective electrode 126 is located on the side of the insulating protrusion 125 away from the second electrode 122; an electric field is formed between the reflective electrode 126 and the second electrode 122, and the orthographic projection of the reflective electrode 126 on the plane where the substrate 120 is located is on the insulating protrusion 125 In the orthographic projection of the plane where the base 120 is located.
  • the substrate 120 may be a hard substrate, such as glass, or a soft substrate, such as polyimide.
  • the surface of the substrate 120 may be provided with a plurality of scan lines extending in the row direction and a plurality of data lines extending in the column direction, and the intersection area of each scan line and each data line defines a pixel area 120a.
  • Each pixel area 120a has a transistor. The source of the transistor is connected to the data line, the drain is connected to the pixel electrode, and the gate is connected to the scan line.
  • the “row” in the embodiment of the present application refers to the extending direction of the parallel scan line.
  • the first electrode 121 is a common electrode
  • the second electrode 122 is a pixel electrode
  • an insulating layer may be used for electrical insulation between the two.
  • An electric field is formed between the common electrode and the pixel electrode to drive the rotation of liquid crystal molecules.
  • the first electrode 121 may also be a pixel electrode
  • the second electrode 122 is a common electrode.
  • the common electrode of each pixel area 120a is connected to form a surface electrode.
  • the common electrode of each pixel area 120a may also be a slit electrode.
  • the pixel electrode adopts an electrode portion 123b having a double domain structure.
  • the width range of the electrode portion 123b may include: 2 ⁇ m to 6 ⁇ m.
  • the width of the electrode portion 123b refers to the width of the electrode portion 123b in the extending direction of the vertical electrode portion 123b.
  • the width range of the slit portion 123a may include: 2 ⁇ m to 8 ⁇ m.
  • the width of the slit portion 123a refers to the width and width of the slit portion 123a in the extending direction of the slit portion 123a.
  • each slit electrode 123 has five electrode portions 123b.
  • the number of electrode portions 123b may also be one, two, or other numbers.
  • the first strip portions 124a of each electrode portion 123b may be parallel to each other, and the second strip portions 124b of each electrode portion 123b may be parallel to each other .
  • the ends of the first strips 124a that are parallel to each other can be connected by horizontal strips, and the ends of the second strips 124b that are parallel to each other can be connected by horizontal strips, as shown in FIGS. 2 and 3.
  • the ends of the first strips 124a that are parallel to each other or the ends of the second strips 124b that are parallel to each other are connected by horizontal strips.
  • the voltage can be applied to each electrode part through the horizontal strip.
  • the insulating protrusions 125 above the bent portion 124c of each electrode portion 123b are preferably connected together to connect the reflective electrode 126 above the bent portion 124c of each electrode portion 123b together, so as to facilitate reflection
  • the electrode 126 applies a voltage.
  • the electrode portion 123b may further include a third strip-shaped portion, ... the N-th strip-shaped portion, N ⁇ 3, the extension direction of the N-th strip-shaped portion and the extension direction of the N-1th strip-shaped portion Intersect, the M-th stripe portion of each electrode portion 123b is connected to the M-1th stripe portion at the bending portion 124c, and M is any positive integer in [2, N].
  • the insulating protrusions 125 above the bending portions 124c of one electrode portion 123b are not connected together, but the reflective electrodes 126 above the bending portions 124c of one electrode portion 123b can be connected together to facilitate the application of voltage to the reflective electrode 126.
  • the material of the reflective electrode 126 may be metal, such as aluminum, silver, and the like.
  • An electric field can also be formed between the reflective electrode 126 and the second electrode 122 to drive the liquid crystal on the side of the second electrode 122 away from the substrate 120 to rotate, thereby increasing the driving depth and reducing the driving voltage of the liquid crystal display panel 1 to a certain extent.
  • the reflective electrode 126 may be electrically connected to the first electrode 121 to simplify the driving circuit. In some embodiments, the reflective electrode 126 may also be provided with an additional driving voltage by the driving circuit.
  • the distance D between the edge of the reflective electrode 126 and the edge on the same side of the insulating protrusion 125 may include a range of 0.3 ⁇ m to 0.8 ⁇ m.
  • the edge of the reflective electrode 126 is not aligned with the edge of the insulating protrusion 125 on the same side.
  • the insulating protrusion 125 is used to electrically insulate the reflective electrode 126 and the second electrode 122.
  • the ratio of the height of the insulating protrusion 125 to the thickness of the liquid crystal layer 13 may range from 0.4 to 0.6 to increase the driving depth of the liquid crystal.
  • the insulating protrusion 125 preferably uses a material with a high dielectric constant, for example, a dielectric constant of 20-30.
  • a material with a high dielectric constant for example, a dielectric constant of 20-30.
  • nanoparticles can be added to the transparent polymer to achieve a high dielectric constant.
  • the transparent polymer may be polyimide or the like.
  • the nanoparticles may include: at least one of TiO 2 nanoparticles, Ti 2 O 5 nanoparticles, and BaTiO 3 nanoparticles.
  • the mass percentage of the nanoparticles in the insulating protrusion 125 may be 30%-40%.
  • the display driving mode of the liquid crystal display panel 1 is line scan, that is, one scan line turns on the transistors of a row of pixels at the same time. Therefore, in the pixel area 120a of the same line, the reflective electrode 126 above the bending portion 124c of each second electrode 122 can be Simultaneously apply the same fixed voltage. In this way, in the embodiment shown in FIGS.
  • the insulating protrusion 125 and the reflective electrode 126 may extend along the row direction, and the orthographic projection of the bent portion 124c of the second electrode 122 of the pixel region 120a of a row on the plane of the substrate 120 is located
  • the corresponding row of insulating protrusions 125 is in the orthographic projection of the plane where the substrate 120 is located, and the orthographic projection of a row of reflective electrodes 126 on the plane of the base 120 is located in the orthographic projection of the corresponding row of insulating protrusions 125 on the plane of the base 120.
  • the insulating protrusions 125 above the bent portion 124c of each second electrode 122 can be connected together, and located in the pixel area 120a of the same row, above the bent portion 124c of each second electrode 122
  • the reflective electrodes 126 can be connected together.
  • Fig. 5 is a driving principle diagram of the liquid crystal display panel in Fig. 1.
  • 6 is a schematic diagram of the light transmission of the backlight source and the reflection of ambient light when the liquid crystal display panel in FIG. 1 is driven.
  • 0V is applied to the first electrode 121
  • a driving voltage is applied to the second electrode 122 (electrode portion 123b of the slit electrode 123)
  • 0V is applied to the reflective electrode 126 (When the reflective electrode 126 is connected to the first electrode 121) or other fixed voltage (when the reflective electrode 126 is not connected to the first electrode 121).
  • an electric field E1 is formed between the first electrode 121 and the second electrode 122, and the liquid crystal molecules near the non-bending portion 124c are separated by the horizontal electrode (i.e., the first electrode) and the slit electrode 123.
  • the oblique electric field at the edge induces a display mode similar to the coplanar conversion, thereby achieving higher transmittance and wider viewing angle contrast.
  • An electric field E2 is formed between the reflective electrode 126 and the second electrode 122 to deflect the liquid crystal molecules near the bending portion 124c, and the polarized light formed by the backlight through the second polarizer 15 can still pass through this area.
  • the liquid crystal display panel 1 of this embodiment can effectively use ambient light to increase the transmittance of the liquid crystal display panel 1, thereby increasing the aperture ratio of the liquid crystal display panel 1 (the effective display area accounts for the percentage of the total display area).
  • the liquid crystal display panel 1 of this embodiment can use the reflective electrode 126 to reflect the ambient light to increase the display brightness, the liquid crystal display panel 1 can adjust the intensity of the transmitted light according to the intensity of the ambient light while increasing the aperture ratio. .
  • the height of the insulating protrusion 125 is 1/2 of the thickness of the liquid crystal layer 13
  • the driving voltage is 30V
  • the light intensity of the transmitted light/the backlight is the maximum, that is, the maximum transmittance is achieved.
  • FIG. 8 is a schematic diagram showing a cross-sectional structure of a liquid crystal display panel according to another embodiment of the present disclosure.
  • the liquid crystal display panel 2 of this embodiment is substantially the same as the liquid crystal display panel 1 of the embodiment in FIGS. 1 to 7, except that the material of the liquid crystal layer 13 is blue phase liquid crystal.
  • the first alignment layer and the second alignment layer can be omitted. Two alignment layer.
  • the isotropic medium does not have "selectivity" in the refraction of light, so the liquid crystal display panel 2 has a good dark state when viewed at different viewing angles.
  • 9 is a schematic diagram of the light transmission of the backlight source and the reflection of ambient light when the liquid crystal display panel in FIG. 8 is not driven. Referring to FIGS. 8 and 9, when a screen with a gray scale of 0 is displayed, 0V is applied to the first electrode 121, the second electrode 122, and the reflective electrode 126, and the blue phase liquid crystal is isotropic. The good dark state is because the ambient light passes through the first polarizer 14 to obtain linearly polarized light.
  • the liquid crystal display panel 2 can automatically adjust the intensity of the transmitted light according to the intensity of the ambient light.
  • the driving method and principle of the liquid crystal display panel 2 are the same as the driving method and principle of the liquid crystal display panel 1 when displaying a screen whose grayscale is not 0.
  • the response speed of the liquid crystal display panel 2 is faster than the response speed of the liquid crystal display panel 1.
  • the array substrate 12 in the liquid crystal display panels 1 and 2 can also be produced and sold as semi-finished products.
  • an embodiment of the present disclosure further provides a display device including any of the above-mentioned liquid crystal display panels 1 and 2.
  • the display device can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator, etc.

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Abstract

一种阵列基板（12）及其液晶显示面板（1），阵列基板（12）包括基底（120），基底（120）具有若干阵列式排布的像素区域（120a），每一像素区域（120a）包括：第一电极（121）、第二电极（122）、绝缘凸起（125）与反射电极（126）；其中，第二电极（122）与第一电极（121）之间适于形成电场，反射电极（126）与第二电极（122）之间也适于形成电场，第二电极（122）包括狭缝电极（123），狭缝电极（123）包括狭缝部（123a）以及位于相邻狭缝部（123a）之间的电极部（123b），电极部（123b）至少包括第一条状部（124a）与第二条状部（124b），第一条状部（124a）的延伸方向与第二条状部（124b）的延伸方向相交，每个电极部（123b）的第一条状部（124a）与第二条状部（124b）在弯折部（124c）连接；在基底（120）所在平面的正投影上，第二电极（122）的弯折部（124c）位于绝缘凸起（125）内，反射电极（126）位于绝缘凸起（125）内，从而使得液晶显示面板（1）在显示灰度不为0的画面时，整个厚度液晶层（13）内的液晶分子被诱导双折射，能够有效利用环境光提升液晶显示面板（1）的透过率。

Description

阵列基板及其液晶显示面板
相关申请的交叉引用
本专利申请要求于2020年5月11日提交的、申请号为2020103939430、发明名称为“阵列基板及其液晶显示面板”的中国专利申请的优先权，该申请的全文以引用的方式并入本文中。
技术领域
本公开涉及显示设备技术领域，尤其涉及一种阵列基板及其液晶显示面板。
背景技术
薄膜晶体管液晶显示器(Thin Film Transistor-Liquid Crystal Display，TFT-LCD)具有体积小、功耗低、无辐射等特点，近年来得到迅速发展，在当前的平板显示器市场中占据主导地位。目前，TFT-LCD按照显示模式可以分为：扭曲向列(Twisted Nematic，TN)型、平面转换(In Plane Switching，IPS)型和高级超维场转换(Advanced Super Dimension Switch，ADS)型。其中，ADS模式液晶显示器因具备广视角、高开口率、高穿透率、高分辨率、响应速度快、低功耗、低色差等优点而得到广泛的应用，成为液晶显示领域的重要技术之一。
发明内容
本公开实施例的第一方面提供一种阵列基板，包括基底，所述基底具有若干阵列式排布的像素区域，每一所述像素区域包括：
第一电极；
第二电极，位于所述第一电极远离所述基底的一侧；所述第二电极与所述第一电极之间适于形成电场，所述第二电极包括狭缝电极，所述狭缝电极包括狭缝部以及位于相邻所述狭缝部之间的电极部，所述电极部至少包括第一条状部与第二条状部，所述第一条状部的延伸方向与所述第二条状部的延伸方向相交，每个电极部的第一条状部与第二条状部在弯折部连接；
绝缘凸起，位于所述第二电极远离所述第一电极的一侧；所述第二电极的弯折部在所述基底所在平面的正投影位于所述绝缘凸起在所述基底所在平面的正投影内；
反射电极，位于所述绝缘凸起远离所述第二电极的一侧；所述反射电极与所述第二电极之间适于形成电场，所述反射电极在所述基底所在平面的正投影位于所述绝缘凸起在所述基底所在平面的正投影内。
可选地，所述反射电极与所述第一电极电连接。
可选地，所述第一电极为公共电极，所述第二电极为像素电极。
可选地，所述绝缘凸起沿行方向延伸，一行所述像素区域的所述第二电极的弯折部在所述基底所在平面的正投影位于对应的一行所述绝缘凸起在所述基底所在平面的正投影内。
可选地，所述反射电极沿行方向延伸，一行所述反射电极在所述基底所在平面的正投影位于对应的一行所述绝缘凸起在所述基底所在平面的正投影内。
可选地，各个所述像素区域的所述公共电极连接成一面电极。
可选地，所述绝缘凸起的介电常数介于20～30；和/或所述绝缘凸起的材料包括：TiO 2纳米粒子、Ti 2O 5纳米粒子以及BaTiO 3纳米粒子中的至少一种。
可选地，所述电极部的宽度范围包括：2μm～6μm；和/或所述狭缝部的宽度范围包括：2μm～8μm。
可选地，所述绝缘凸起的高度与所述液晶层的厚度之比范围包括：0.4～0.6。
可选地，在所述基底所在平面的正投影上，所述反射电极的同侧边缘与所述绝缘凸起的同侧边缘之间的间距范围包括：0.3μm～0.8μm。
本公开实施例的第二方面提供一种液晶显示面板，包括：彩膜基板、上述任一项所述的阵列基板、以及设置在所述彩膜基板与所述阵列基板之间的液晶层。
可选地，所述液晶层的材料为蓝相液晶。
本公开实施例的第三方面提供一种显示装置，包括：上述任一项所述的液晶显示面板。
根据本公开的上述实施例中，第二电极与第一电极之间适于形成电场，反射电极与第二电极之间也适于形成电场，使得液晶显示面板在显示灰度不为0的画面时，整个厚 度液晶层内的液晶分子被诱导双折射，能够有效利用环境光提升液晶显示面板的透过率，提升液晶显示面板的开口率，还能根据环境光的强弱来自行调节透射光的强弱。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是根据本公开一实施例示出的液晶显示面板的截面结构示意图；
图2是图1中的阵列基板的俯视结构示意图；
图3是图2中的阵列基板去除绝缘凸起与反射电极后的俯视结构示意图；
图4是沿着图2中的AA线的剖视图；
图5是图1中的液晶显示面板的驱动原理图；
图6是图1中的液晶显示面板在驱动时的背光源透光与环境光反光的原理图；
图7是透过率与驱动电压的关系图；
图8是根据本公开另一实施例示出的液晶显示面板的截面结构示意图；
图9是图8中的液晶显示面板在未被驱动时的背光源透光与环境光反光的原理图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
ADS模式显示的工作原理是利用狭缝电极产生多维电场，驱动液晶偏转。为防止被驱动的液晶分子为单畴模式，即液晶分子取向具有单一性，导致在不同角度观看时会存在色偏问题，将狭缝电极的电极部设置成包括不同走向的条状电极，以形成多种方向的电场，进而驱动液晶分子多畴显示。
然而，电极部的弯折处由于多种电场叠加，附近液晶偏转会出现紊乱，形成驱动“真 空区”，即液晶不能实现有效驱动，在像素内形成“显示死区”。这降低了液晶的透过率进而降低了液晶显示面板的对比度，在高亮度环境光的场景使用时会出现灰度和对比度不足的现象，严重影响了显示效果。
图1是根据本公开一实施例示出的液晶显示面板的截面结构示意图。图2是图1中的阵列基板的俯视结构示意图。图3是图2中的阵列基板去除绝缘凸起与反射电极后的俯视结构示意图。图4是沿着图2中的AA线的剖视图。
参照图1至图4所示，液晶显示面板1，包括：
彩膜基板11；
阵列基板12；
液晶层13，设置在彩膜基板11与阵列基板12之间；
第一偏振片14，设置在彩膜基板11远离液晶层13的一侧；
第二偏振片15，设置在阵列基板12远离液晶层13的一侧。
液晶层13的材料可以为向列相(Nematic)液晶。为了保证图像正常显示，彩膜基板11朝向液晶层13的一侧可以设置第一配向层(未图示)，阵列基板12朝向液晶层13的一侧可以设置第二配向层(未图示)，第一配向层与第二配向层用于使液晶分子具有初始的偏转角度。
第二偏振片15远离阵列基板12的一侧可以设置背光源(未图示)。第一偏振片14与第二偏振片15的偏振方向可以垂直，用于使背光源的光线选择性地通过液晶显示面板1。
一些实施例中，第一偏振片14和/或第二偏振片15可以替换为其它能实现光线偏振的结构。
参照图2至图4所示，阵列基板12包括基底120，基底120具有若干阵列式排布的像素区域120a，每一像素区域120a包括：
第一电极121；
第二电极122，位于第一电极121远离基底120的一侧；第二电极122与第一电极121之间适于形成电场，第二电极122包括狭缝电极123，狭缝电极123包括狭缝部123a以及位于相邻狭缝部123a之间的电极部123b，电极部123b至少包括第一条状部124a与第二条状部124b，第一条状部124a的延伸方向与第二条状部124b的延伸方向相交， 每个电极部123b的第一条状部124a与第二条状部124b在弯折部124c连接；
绝缘凸起125，位于第二电极122远离第一电极121的一侧；第二电极122的弯折部124c在基底120所在平面的正投影位于绝缘凸起125在基底120所在平面的正投影内；
反射电极126，位于绝缘凸起125远离第二电极122的一侧；反射电极126与第二电极122之间适于形成电场，反射电极126在基底120所在平面的正投影位于绝缘凸起125在基底120所在平面的正投影内。
基底120可以为硬质基底，例如玻璃，也可以为软质基底，例如聚酰亚胺。基底120表面可以设置若干条沿行方向延伸的扫描线以及若干条沿列方向延伸的数据线，每条扫描线与每条数据线的交叉区域限定了一个像素区域120a。每个像素区域120a具有一晶体管。晶体管的源极连接数据线，漏极连接像素电极，栅极连接扫描线。
需要说明的是，本申请的实施例中的“行”是指平行扫描线的延伸方向。
本实施例中，第一电极121为公共电极，第二电极122为像素电极，两者之间可以采用绝缘层电绝缘。公共电极与像素电极之间适于形成电场，以驱动液晶分子旋转。其它实施例中，第一电极121也可以为像素电极，第二电极122为公共电极。
本实施例中，各个像素区域120a的公共电极连接成一面电极。其它实施例中，各个像素区域120a的公共电极也可以为狭缝电极。
本实施例中，像素电极采用具有双畴结构的电极部123b。电极部123b的宽度范围可以包括：2μm～6μm。电极部123b的宽度是指：在垂直电极部123b延伸方向上，电极部123b的宽窄尺寸。狭缝部123a的宽度范围可以包括：2μm～8μm。狭缝部123a的宽度是指：在垂直狭缝部123a延伸方向上，狭缝部123a的宽窄尺寸。
需要说明的是，本申请实施例中的“范围包括”是指包括两个端点值。
图2与图3所示实施例中，每个狭缝电极123具有五个电极部123b，其它实施例中，电极部123b的数目还可以为一个、两个等其它数目。当电极部123b的数目为两个及其以上时，一个狭缝电极123中，各个电极部123b的第一条状部124a可以相互平行，各个电极部123b的第二条状部124b可以相互平行。相互平行的第一条状部124a的末端可以通过水平条状部相连，相互平行的第二条状部124b的末端可以通过水平条状部相连，如图2和3所示。在一些实施例中，可以仅相互平行的第一条状部124a的末端或相互平行的第二条状部124b的末端通过水平条状部相连。可以通过水平条状部向各电 极部施加电压。一个狭缝电极123中，各个电极部123b的弯折部124c上方的绝缘凸起125优选连接在一起，以将各个电极部123b的弯折部124c上方的反射电极126连接在一起，便于对反射电极126施加电压。
此外，一些实施例中，电极部123b还可以包括第三条状部、……第N条状部，N≥3，第N条状部的延伸方向与第N-1条状部的延伸方向相交，每个电极部123b的第M条状部与第M-1条状部在弯折部124c连接，M为[2，N]中的任一正整数。一个电极部123b的各个弯折部124c上方的绝缘凸起125不连接在一起，但一个电极部123b的各个弯折部124c上方的反射电极126可以连接在一起，便于对反射电极126施加电压。
反射电极126的材料可以为金属，例如铝、银等。
反射电极126与第二电极122之间也可以形成电场，以驱动第二电极122远离基底120一侧的液晶旋转，从而增加驱动纵深，在一定程度上降低液晶显示面板1的驱动电压。
一些实施例中，反射电极126可以与第一电极121电连接，以简化驱动电路。一些实施例中，反射电极126也可以由驱动电路提供额外的驱动电压。
参照图2所示，反射电极126的边缘与绝缘凸起125的同侧边缘之间的间距D范围可以包括：0.3μm～0.8μm。换言之，反射电极126的边缘与绝缘凸起125的同侧边缘不对齐，好处在于：可防止反射电极126的尖端放电、避免电场过于密集。
绝缘凸起125用于电绝缘反射电极126与第二电极122。绝缘凸起125的高度与液晶层13的厚度之比范围可以包括：0.4～0.6，以增加液晶的驱动纵深。
绝缘凸起125优选采用高介电常数的材料，例如介电常数介于20～30。好处在于：可使电势降不消耗在绝缘凸起125上，全部用在液晶分子的偏转上，有利于进一步降低驱动电压，节省能耗。
值得说明的是，本申请实施例中的“介于”是指包括两个端点值。
具体地，可在透明聚合物中加入纳米粒子以实现高介电常数。透明聚合物可以为聚酰亚胺等。纳米粒子可以包括：TiO 2纳米粒子、Ti 2O 5纳米粒子以及BaTiO 3纳米粒子中的至少一种。绝缘凸起125中，纳米粒子的质量百分比可以为30％～40％。
由于液晶显示面板1的显示驱动方式为行扫描，即一条扫描线同时打开一行像素的晶体管，因而，位于同行的像素区域120a中，各个第二电极122的弯折部124c上方的 反射电极126可以同步施加同一固定电压。如此，图2与图3所示实施例中，绝缘凸起125与反射电极126可以沿行方向延伸，一行像素区域120a的第二电极122的弯折部124c在基底120所在平面的正投影位于对应的一行绝缘凸起125在基底120所在平面的正投影内，一行反射电极126在基底120所在平面的正投影位于对应的一行绝缘凸起125在基底120所在平面的正投影内。换言之，位于同行的像素区域120a中，各个第二电极122的弯折部124c上方的绝缘凸起125可以连接在一起，位于同行的像素区域120a中，各个第二电极122的弯折部124c上方的反射电极126可以连接在一起。
图5是图1中的液晶显示面板的驱动原理图。图6是图1中的液晶显示面板在驱动时的背光源透光与环境光反光的原理图。参照图5所示，在显示灰度不为0的画面时，第一电极121被施加0V，第二电极122(狭缝电极123的电极部123b)被施加驱动电压，反射电极126被施加0V(反射电极126连接第一电极121时)或其它固定电压(反射电极126不连接第一电极121时)。参照图5、图6与图3所示，第一电极121与第二电极122之间形成电场E1，非弯折部124c附近的液晶分子被水平电极(即第一电极)和狭缝电极123边缘的倾斜电场诱导实现类似于共面转换的显示模式，从而实现较高的透过率和较宽的视角对比度。反射电极126与第二电极122之间形成电场E2，使弯折部124c附近的液晶分子偏转，背光源透过第二偏振片15形成的偏振光依然能够通过该区域。
当环境光照射到上述被驱动的液晶显示面板1时，先通过第一偏振片14得到线偏振光，由于液晶层13整个厚度内的液晶分子被诱导双折射，因而线偏振光经过液晶层13后全部形成双折射光，双折射光被反射电极126反射后能够通过第一偏振片14进入外界。换言之，本实施例的液晶显示面板1能够有效利用环境光提升液晶显示面板1的透过率，从而提升了液晶显示面板1的开口率(有效显示面积占显示区域总面积的百分比)。
当环境光的光强较大时，液晶显示面板1的显示亮度与环境光的光强对比度要求较高，否则会出现显示不明显的情况。由于本实施例的液晶显示面板1可利用反射电极126反射环境光增加显示亮度，因而，液晶显示面板1在提升开口率的同时，还能根据环境光的强弱来自行调节透射光的强弱。
在第一电极121被施加0V，第二电极122被施加驱动电压，反射电极126被施加0V(反射电极126连接第一电极121时)的情况下：当绝缘凸起125的高度为液晶层13的厚度的1/2时，环境光与反射光、背光源与透射光能实现相同的光程差，能够在同一驱动电压下实现最大透过率。为验证上述结论，图7提供了透过率与驱动电压的关系 图。可以看出，当绝缘凸起125的高度为液晶层13的厚度的1/2时，在驱动电压为30V时，反射光的光强/环境光的光强、透射光的光强/背光源的光强都为最大，即实现了最大透过率。
图8是根据本公开另一实施例示出的液晶显示面板的截面结构示意图。参照图8所示，本实施例的液晶显示面板2与图1至图7中实施例的液晶显示面板1大致相同，区别仅在于：液晶层13的材料为蓝相液晶。
不同于向列相液晶在不施加驱动电压时表现为各向异性介质，蓝相液晶在不施加驱动电压时表现为各向同性介质，因而液晶显示面板2中，可以省略第一配向层与第二配向层。
此外，各向同性的介质对光线的折射不存在“选择性”，因而液晶显示面板2在不同的视角观察都具有良好的暗态。图9是图8中的液晶显示面板在未被驱动时的背光源透光与环境光反光的原理图。参照图8与图9所示，在显示灰度为0的画面时，第一电极121、第二电极122以及反射电极126都被施加0V，蓝相液晶呈现各向同性。良好暗态是因为：环境光通过第一偏振片14得到线偏振光，若线偏振光以布鲁斯特角入射反射电极126时，反射后的线偏振光旋转90°可被第一偏振片14完全吸收，无法出射；若线偏振光以非布鲁斯特角入射反射电极126时，反射后的线偏振光会变为椭圆偏振光，可大部分被第一偏振片14吸收，出射较少。可见，液晶显示面板2能根据环境光的强弱来自行调节透射光的强弱。
当对蓝相液晶施加驱动电压后其会发生科尔效应，表现为各向异性介质，线偏振光在通过科尔效应后的蓝相液晶后会发生双折射现象。因而在显示灰度不为0的画面时，液晶显示面板2的驱动方式及原理与液晶显示面板1的驱动方式及原理相同。
由于蓝相液晶的科尔效应具有ms级的响应速度，因而液晶显示面板2的响应速度快于液晶显示面板1的响应速度。
一些实施例中，液晶显示面板1、2中的阵列基板12也可以作为半成品生产与销售。
基于上述液晶显示面板1、2，本公开一实施例还提供一种包括上述任一种液晶显示面板1、2的显示装置。显示装置可以为：电子纸、手机、平板电脑、电视机、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
需要指出的是，在附图中，为了图示的清晰可能夸大了层和区域的尺寸。而且可以理解，当元件或层被称为在另一元件或层“上”时，它可以直接在其他元件上，或者可以 存在中间的层。另外，可以理解，当元件或层被称为在另一元件或层“下”时，它可以直接在其他元件下，或者可以存在一个以上的中间的层或元件。另外，还可以理解，当层或元件被称为在两层或两个元件“之间”时，它可以为两层或两个元件之间唯一的层，或还可以存在一个以上的中间层或元件。通篇相似的参考标记指示相似的元件。
在本公开中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (12)

  1. 一种阵列基板，包括基底，所述基底具有若干阵列式排布的像素区域，每一所述像素区域包括：
    第一电极；
    第二电极，位于所述第一电极远离所述基底的一侧；所述第二电极与所述第一电极之间适于形成电场，所述第二电极包括狭缝电极，所述狭缝电极包括狭缝部以及位于相邻所述狭缝部之间的电极部，所述电极部至少包括第一条状部与第二条状部，所述第一条状部的延伸方向与所述第二条状部的延伸方向相交，每个所述电极部的第一条状部与第二条状部在弯折部连接；
    绝缘凸起，位于所述第二电极远离所述第一电极的一侧；所述第二电极的弯折部在所述基底所在平面的正投影位于所述绝缘凸起在所述基底所在平面的正投影内；
    反射电极，位于所述绝缘凸起远离所述第二电极的一侧；所述反射电极与所述第二电极之间适于形成电场，所述反射电极在所述基底所在平面的正投影位于所述绝缘凸起在所述基底所在平面的正投影内。
  2. 根据权利要求1所述的阵列基板，其中，所述反射电极与所述第一电极电连接。
  3. 根据权利要求1所述的阵列基板，其中，所述绝缘凸起沿行方向延伸，一行所述像素区域的所述第二电极的弯折部在所述基底所在平面的正投影位于对应的一行所述绝缘凸起在所述基底所在平面的正投影内。
  4. 根据权利要求3所述的阵列基板，其中，所述反射电极沿行方向延伸，一行所述反射电极在所述基底所在平面的正投影位于对应的一行所述绝缘凸起在所述基底所在平面的正投影内。
  5. 根据权利要求1或2所述的阵列基板，其中，所述第一电极为公共电极，所述第二电极为像素电极。
  6. 根据权利要求5所述的阵列基板，其中，各个所述像素区域的所述公共电极连接成一面电极。
  7. 根据权利要求1所述的阵列基板，其中，所述绝缘凸起的介电常数介于20～30；和/或所述绝缘凸起的材料包括：TiO 2纳米粒子、Ti 2O 5纳米粒子以及BaTiO 3纳米粒子中的至少一种。
  8. 根据权利要求1所述的阵列基板，其中，所述电极部的宽度范围包括：2μm～6μm；和/或所述狭缝部的宽度范围包括：2μm～8μm。
  9. 根据权利要求1所述的阵列基板，其中，所述绝缘凸起的高度与所述液晶层的 厚度之比范围包括：0.4～0.6。
  10. 根据权利要求1所述的阵列基板，其中，在所述基底所在平面的正投影上，所述反射电极的边缘与所述绝缘凸起的同侧边缘之间的间距范围包括：0.3μm～0.8μm。
  11. 一种液晶显示面板，包括：彩膜基板、权利要求1至10任一项所述的阵列基板、以及设置在所述彩膜基板与所述阵列基板之间的液晶层。
  12. 根据权利要求11所述的液晶显示面板，其中，所述液晶层的材料为蓝相液晶。
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