WO2016041216A1 - 一种液晶显示面板 - Google Patents

一种液晶显示面板 Download PDF

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Publication number
WO2016041216A1
WO2016041216A1 PCT/CN2014/087382 CN2014087382W WO2016041216A1 WO 2016041216 A1 WO2016041216 A1 WO 2016041216A1 CN 2014087382 W CN2014087382 W CN 2014087382W WO 2016041216 A1 WO2016041216 A1 WO 2016041216A1
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WO
WIPO (PCT)
Prior art keywords
substrate
layer
liquid crystal
common electrode
color filter
Prior art date
Application number
PCT/CN2014/087382
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English (en)
French (fr)
Inventor
郝思坤
Original Assignee
深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/398,460 priority Critical patent/US20160282680A1/en
Publication of WO2016041216A1 publication Critical patent/WO2016041216A1/zh

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Classifications

    • 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
    • G02F1/1335—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
    • G02F1/1337—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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a liquid crystal display panel.
  • the liquid crystal display has the advantages of high display quality, low price, convenient carrying, and the like, and is widely used in display terminals such as mobile communication devices, personal computers, and televisions.
  • the display mode of the liquid crystal display is: twisted nematic (Twist Nematic, TN) mode, Vertical Alignment (VA) mode, and multi-domain vertical alignment (Multi-domain Vertical) Alignment, MVA) mode, etc.
  • the vertical alignment (VA) mode thin film transistor liquid crystal display has high opening, high resolution, wide viewing angle, etc., and is used for large-sized panels such as LCD TVs.
  • the electrodes of the conventional liquid crystal display panel are as shown in FIG. 1 and FIG. 2.
  • the pixel electrode of the thin film transistor (TFT) array substrate is designed to be "fishbone", that is, The vertically intersecting strip-shaped main electrode (keel) divides the entire electrode into a plurality of display regions, and each of the display regions is arranged with strip-shaped branch electrodes spaced apart from each other; referring to FIG. 2, the electrodes of the color filter substrate (CF) are The film shape serves as a common electrode.
  • the liquid crystal display panel formed by combining the pixel electrode of FIG. 1 and the common electrode of FIG. 2 has an optical representation as shown in FIG. 3, and has the disadvantage that at the intermediate portion of the pixel, the liquid crystal orientation is parallel to the penetration of the polarizer.
  • TFT thin film transistor
  • the width of the dark line caused by the electrodes of the liquid crystal display panel in the prior art is still wide, which affects the liquid crystal efficiency, thereby affecting the application in a small-sized high-resolution panel.
  • the technical problem to be solved by the present invention is to provide a liquid crystal display panel capable of improving the liquid crystal efficiency of a pixel and broadening the application range of the vertically aligned display mode in a small-sized high-resolution panel.
  • the present invention adopts a technical solution to provide a liquid crystal display panel, and the liquid crystal display panel includes:
  • a first substrate comprising a plurality of pixels, wherein each pixel comprises a corresponding pixel electrode, and the pixel electrode comprises a stem electrode and a branch electrode extending from the stem electrode;
  • a second substrate disposed opposite to the first substrate, and comprising:
  • the common electrode layer has a plurality of recessed portions facing the substrate substrate, and each of the recessed portions is opposite to a corresponding one of the stem electrodes; the shape of the recessed portion
  • the shape of the main electrode is the same as that of the trunk electrode, and the recessed portion has a trapezoidal cross section and a large width at the opening.
  • the second substrate further includes a color filter layer formed between the base substrate and the common electrode layer; wherein the color filter layer faces the common electrode A plurality of trenches are formed on one side of the layer, and a plurality of the recessed portions in the common electrode layer are respectively formed in the plurality of trenches.
  • the second substrate further includes a color filter layer formed between the base substrate and the protective layer, and a protective layer formed on the color filter layer And a plurality of trenches are formed in a side of the protective layer facing the common electrode layer, and a plurality of the recessed portions in the common electrode layer are respectively formed correspondingly Within the plurality of grooves.
  • liquid crystal display panel includes:
  • a first substrate comprising a plurality of pixels, wherein each pixel comprises a corresponding pixel electrode, and the pixel electrode comprises a stem electrode and a branch electrode extending from the stem electrode;
  • a second substrate disposed opposite to the first substrate, and comprising:
  • a plurality of trenches facing the substrate substrate are opened on the second substrate, and each of the trenches is opposite to a corresponding one of the stem electrodes in the pixel electrode.
  • the trench is formed on a side of the color filter layer facing the common electrode, and the common electrode layer has a plurality of recessed portions respectively formed correspondingly in the color filter layer Within the plurality of grooves.
  • the second substrate further includes a protective layer formed between the color filter layer and the common electrode layer, the trench being formed in the protective layer toward the common electrode One side, and the common electrode layer has a plurality of recessed portions respectively formed in the plurality of trenches in the protective layer.
  • the shape of the trench is the same as the shape of the trunk electrode.
  • the groove has a trapezoidal cross section and a large width at the opening.
  • the present invention adopts a technical solution to provide a liquid crystal display panel, and the liquid crystal display panel includes:
  • a first substrate comprising a plurality of pixels, wherein each pixel comprises a corresponding pixel electrode, and the pixel electrode comprises a stem electrode and a branch electrode extending from the stem electrode;
  • a second substrate disposed opposite to the first substrate, and comprising:
  • the common electrode layer has a plurality of recessed portions facing the substrate substrate, and each of the recessed portions is opposite to the one of the corresponding ones of the pixel electrodes.
  • the second substrate further includes a color filter layer formed between the base substrate and the common electrode layer; wherein the color filter layer faces the common electrode A plurality of trenches are formed on one side of the layer, and a plurality of the recessed portions in the common electrode layer are respectively formed in the plurality of trenches.
  • the second substrate further includes a color filter layer formed between the base substrate and the protective layer, and a protective layer formed on the color filter layer And a plurality of trenches are formed in a side of the protective layer facing the common electrode layer, and a plurality of the recessed portions in the common electrode layer are respectively formed correspondingly Within the plurality of grooves.
  • the shape of the recessed portion is the same as the shape of the trunk electrode.
  • the concave portion has a trapezoidal cross section and a large width at the opening.
  • the present invention forms a recess on a side of the second substrate in contact with the liquid crystal layer, and each recess is directed to the main electrode in a corresponding one of the pixel electrodes An electric field is formed at the recess, which can improve the orientation of the liquid crystal corresponding to the recess, thereby shortening the width of the dark line caused by the main electrode, improving the liquid crystal efficiency of the pixel in the vertically aligned display mode, and broadening the vertical alignment display mode.
  • FIG. 1 is a schematic structural view of a pixel electrode of a thin film transistor array substrate of a liquid crystal display panel in the prior art
  • FIG. 2 is a schematic structural view of a common electrode of a color filter substrate of a liquid crystal display panel in the prior art
  • FIGS. 1 and 2 is an optical effect view of an electrode structure of the liquid crystal display panel shown in FIGS. 1 and 2;
  • FIG. 4 is a schematic structural view of an embodiment of a liquid crystal display panel of the present invention.
  • FIG. 5 is a schematic structural view of another embodiment of a liquid crystal display panel of the present invention.
  • FIG. 6 is a schematic structural view of an embodiment of a pixel electrode of a first substrate of a liquid crystal display panel of the present invention.
  • FIG. 7 is a schematic structural view of an embodiment of a common electrode layer of a second substrate of a liquid crystal display panel of the present invention.
  • FIG. 8 is a schematic structural view of an embodiment of a common electrode layer of a liquid crystal display panel of the present invention.
  • Figure 10 is an optical effect view of the liquid crystal display panel of the present invention.
  • Figure 11 is a graph showing the relationship between the transmittance and the position at the straight line mark in Figures 9 and 10;
  • FIG. 12 is a schematic structural view of another embodiment of a liquid crystal display panel of the present invention.
  • FIG. 13 is a schematic structural view of a color filter layer of the liquid crystal display panel of FIG.
  • an embodiment of the present invention provides a liquid crystal display panel including a first substrate 2 , a second substrate 1 disposed opposite to the first substrate 2 , and a first substrate 2 and a second substrate 1 .
  • the liquid crystal layer 3 as shown in FIG. 6, the first substrate 2 includes a plurality of pixels, wherein each pixel includes a corresponding pixel electrode, and the pixel electrode includes a trunk electrode 21 and a branch electrode 22 extending from the trunk electrode 21.
  • the main electrode 21 divides the pixel into a plurality of regions, and the branch electrode 22 is distributed in a plurality of regions divided by the trunk electrode 21, and the trunk electrode 21 is generally composed of two or more electrodes perpendicular to each other, which divides the corresponding pixel into four a region, six regions, eight regions, and the like;
  • the first substrate 2 includes a glass substrate, and the pixel electrode is formed on the glass substrate;
  • the second substrate 1 includes the substrate substrate 11 and a common body formed on the substrate substrate 11.
  • the electrode layer 14, the base substrate 11 is generally a transparent glass plate, and the common electrode layer 14 is generally a transparent film electrode; wherein, as shown in FIG. 7, the common electrode layer 14 has a plurality of depressions toward the substrate substrate.
  • each recessed portion 4 is directed to the stem electrode 21 in a corresponding pixel electrode, the recessed portion 4 being recessed toward the base substrate 11 by the surface of the common electrode layer 14 in contact with the liquid crystal layer 3 to form a recess .
  • a plurality of recessed portions facing the substrate substrate are disposed in the common electrode layer, and each recessed portion faces a main electrode in a corresponding pixel electrode, and an electric field is formed at the recessed portion, and the electric field can be improved.
  • the orientation of the liquid crystal corresponding to the recessed portion thereby shortening the width of the dark line caused by the stem electrode, improving the liquid crystal efficiency of the pixel in the vertically aligned display mode, and broadening the application range of the vertically aligned display mode in the small-sized high-resolution panel.
  • the second substrate 1 further includes a color filter layer 12 formed between the base substrate 11 and the common electrode layer 14; and the color filter layer 12 is formed by a color filter film.
  • the color filter layer 12 is formed on the surface of the base substrate 11, and the common electrode layer 14 is deposited on the color filter layer 12; wherein a plurality of trenches are formed in a side of the color filter layer 12 toward the common electrode layer 14.
  • the plurality of recessed portions 4 in the common electrode layer 14 are respectively formed in the plurality of trenches, and in the present embodiment, since the common electrode layer 14 is formed on the color filter layer 12 Therefore, a portion of the common electrode layer 14 corresponding to the groove is recessed toward the color filter layer 12 to form a recessed portion 4, and the recessed portion 4 is formed by recessing the entire groove portion of the common electrode layer 14 downward.
  • the groove that is, in the recessed portion 4, the thickness of the common electrode layer 14 is constant; in the process, the processes of the base substrate 11 and the common electrode layer 14 are the same as those of the conventional process, except that in the present embodiment, color is produced.
  • the filter layer 12 When the filter layer 12 is required, it is required to be in the color filter layer 1 2 is formed with a groove corresponding to the portion of the main electrode 21; by providing a groove on the color filter layer 12 without changing the thickness of the common electrode layer 14, the common electrode layer 14 is recessed toward the color filter layer 12, thereby The position of the common electrode layer 14 corresponding to the trunk electrode 21 forms a recessed portion 4, and an electric field can be formed at the recessed portion 4, so that the orientation of the liquid crystal corresponding to the stem electrode 21 is changed, thereby shortening the width of the dark line caused by the stem electrode 21.
  • the second substrate 1 further includes a color filter layer 12 and a protective layer 13, and the color filter layer 12 is formed on the base substrate 11 and the protective layer 13.
  • the protective layer 13 is formed between the color filter layer 12 and the common electrode layer 14.
  • the protective layer 13 is formed on the color filter layer 12 to suppress the image quality, so that the color filter layer 12 is provided.
  • the surface is flat, wherein a color filter layer 12 is formed on the surface of the base substrate 11, a protective layer 13 is deposited on the color filter layer 12, and a common electrode layer 14 is deposited on the protective layer 13, wherein the protective layer 13 faces the common electrode
  • a plurality of trenches (not shown) are formed on one side of the layer 14, and a plurality of recessed portions 4 in the common electrode layer 14 are respectively formed in the plurality of trenches; in the embodiment, the common electrode The layer 14 is formed on the protective layer 13, so that the portion of the common electrode layer 14 corresponding to the trench is recessed toward the color filter layer 12 to form a recessed portion 4, which is corresponding to the common electrode layer 14.
  • the thickness of the common electrode layer 14 is constant; in the process, the processes of the base substrate 11, the color filter layer 12, and the common electrode layer 14 are the same as those of the conventional process, except that in the present embodiment, in the fabrication
  • the protective layer 13 it is necessary to form a trench on the protective layer 13 corresponding to the portion of the main electrode 21; by providing a trench on the protective layer without changing the thickness of the common electrode layer, the common electrode layer is recessed toward the protective layer, thereby A recessed portion 4 is formed on the common electrode layer at a position corresponding to the trunk electrode 21, and an electric field can be formed at the recessed portion 4 such that the orientation of the liquid crystal corresponding to the stem electrode 21 is changed, thereby shortening the width of the dark line caused by the stem electrode 21.
  • the shape of the recessed portion 4 is the same as that of the trunk electrode 21, that is, since the stem electrode 21 is generally composed of two or more electrodes perpendicular to each other, the corresponding pixel is divided into four regions, six a region, eight regions, and the like, the recessed portion 4 on the common electrode layer 14 also correspondingly forms two or more recesses perpendicular to each other on the common electrode layer to divide the corresponding common electrode layer portion into four regions. Six regions, eight regions, and the like, that is, the shape of the depressed portion 4 on the common electrode layer 14 completely coincides with the shape of the trunk electrode 21, so that the dark line becomes the narrowest.
  • the recessed portion 4 has a trapezoidal cross section and a wide opening at the opening thereof, and the opening refers to a bottom edge of the trapezoid adjacent to the side of the first substrate 2, so that the color filter can be retained at most
  • the cross section of the recessed portion may also be other shapes such as a rectangle, an arc, a triangle, and the like.
  • the second substrate of the embodiment of the present invention may further include a black matrix layer and a spacer layer (not shown), and the black matrix layer is disposed between the color filter layer and the substrate, and the process is unchanged, and the conventional The process is the same.
  • FIG. 9 is an optical effect view of a common electrode layer 140 of a liquid crystal display panel in the prior art without a recessed portion
  • FIG. 10 is an optical effect view of the liquid crystal display panel of the embodiment of the present invention
  • FIG. 11 is a straight line of FIGS. 9 and 10.
  • FIG. 9 and FIG. 10 compared to the prior art common electrode layer 140
  • the dark line is significantly thinned.
  • the common electrode layer 140 of the liquid crystal display panel of the embodiment of the present invention is increased. After the recessed portion, the corresponding dark line at the trunk electrode 210 is reduced from the prior art 7 micron to 5.5 micron, and the corresponding transmittance at the same position is also improved as compared with the prior art.
  • FIG. 12 and FIG. 13 another embodiment of the present invention provides a liquid crystal display panel including a first substrate 20 , a second substrate 10 disposed opposite to the first substrate 20 , and a first substrate 20 and a second substrate a liquid crystal layer 30 between the substrates 10,
  • the first substrate 20 includes a plurality of pixels, wherein each pixel includes a corresponding pixel electrode, and the pixel electrode includes a stem electrode 210 and a branch electrode extending from the stem electrode 210, the trunk electrode
  • the pixel is divided into a plurality of regions, and the branch electrodes are distributed in a plurality of regions divided by the trunk electrode 210.
  • the trunk electrodes 210 are generally composed of two or more electrodes perpendicular to each other, and the corresponding pixels are divided into four regions, six.
  • a second substrate 10 including a base substrate 110, a color filter layer 120 formed on the base substrate 110, and a common electrode layer 140 formed on the color filter layer 120, the base substrate 110 is generally a transparent glass plate, and the common electrode layer 140 is generally a transparent film electrode; wherein a plurality of grooves 40 facing the substrate substrate 110 are opened on the second substrate 10, and each Groove 40 for the positive electrode of a pixel corresponding to the trunk electrode 210.
  • a plurality of trenches 40 are formed on the second substrate 10 toward the substrate substrate 110, and each trench 40 is adjacent to the stem electrode 210 in one corresponding pixel electrode, and the second substrate 10 is adjacent to the liquid crystal.
  • An electric field is formed on one side of the groove 40, and the electric field can improve the orientation of the liquid crystal corresponding to the recessed portion, thereby shortening the width of the dark line caused by the stem electrode 210, and improving the liquid crystal efficiency of the pixel in the vertically aligned display mode. , widening the application range of vertical alignment display mode in small-size high-resolution panels.
  • the trench 40 is formed on one side of the color filter layer 120 facing the common electrode, and the common electrode layer 140 has a plurality of recessed portions respectively corresponding to the plurality of trenches 40 formed in the color filter layer 120 Inside.
  • the portion of the common electrode layer 140 corresponding to the trench 40 is recessed toward the color filter layer 120 to form a recessed portion.
  • the recessed portion is formed by recessing the entire portion of the common electrode layer 140 corresponding to the trench 40 to form a recess, that is, in the recessed portion, the thickness of the common electrode layer 140 is constant; in terms of process, the base substrate 110 and the common electrode layer
  • the process of the 140 is the same as that of the conventional process.
  • the groove 40 is formed on the portion of the color filter layer 120 corresponding to the main electrode 210;
  • the trenches 40 are disposed on the layer 120 without changing the thickness of the common electrode layer 140, so that the common electrode layer 140 is recessed toward the color filter layer 120, thereby forming a recessed portion on the common electrode layer 140 corresponding to the position of the stem electrode 210.
  • An electric field can be formed at the recessed portion such that the orientation of the liquid crystal corresponding to the stem electrode 210 is changed, thereby shortening the width of the dark line caused by the stem electrode 210.
  • the second substrate further includes a protective layer formed between the color filter layer and the common electrode layer, the trench being formed on a side of the protective layer facing the common electrode, and
  • the common electrode layer has a plurality of recessed portions respectively formed correspondingly in the plurality of trenches in the protective layer.
  • the common electrode layer is formed on the protective layer, a portion of the common electrode layer corresponding to the trench is recessed toward the color filter layer to form a recessed portion, and the recessed portion is formed by the common electrode layer.
  • the portion corresponding to the groove is entirely recessed downward to form a groove, that is, the thickness of the common electrode layer is constant in the recessed portion; in the process, the processes of the base substrate, the color filter layer and the common electrode layer are the same as the conventional process, The difference is that in the embodiment, when the protective layer is formed, it is necessary to form a trench on the portion of the protective layer corresponding to the main electrode; by providing a trench on the protective layer without changing the thickness of the common electrode layer, the common electrode layer is formed.
  • the recess is recessed toward the protective layer so that a recessed portion is formed on the common electrode layer at a position corresponding to the main electrode, and an electric field can be formed at the recessed portion, so that the liquid crystal orientation of the corresponding main electrode is changed, thereby shortening the width of the dark line caused by the main electrode.
  • the shape of the trench is the same as the shape of the trunk electrode; that is, since the trunk electrode is generally composed of two or more electrodes perpendicular to each other, the corresponding pixel is divided into four regions, six regions, Eight regions and the like, the grooves on the second substrate also correspond to two or more perpendicular to each other, that is, the shape of the groove on the second substrate completely matches the shape of the trunk electrode, which can make the dark line Become the narrowest.
  • the groove has a trapezoidal cross section and a large width at the opening thereof.

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  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种液晶显示面板，所述液晶显示面板包括第一基板（2）、第二基板（1）和夹置于第一基板（2）及第二基板（1）之间的液晶层（3），第一基板（2）包括多个像素，其中，每个像素包括一个对应的像素电极，且所述像素电极包括主干电极（21）和从所述主干电极（21）延伸出去的分支电极（22），第二基板（1）包括衬底基板（11）和形成在衬底基板（11）上的公共电极层（14），其中，所述公共电极层（14）具有多个朝向所述衬底基板（11）方向的凹陷部分（4），且每个所述凹陷部分（4）正对于一个对应的所述像素电极中的所述主干电极（21）。通过上述方式，能够提高像素的液晶效率，拓宽垂直对齐显示模式在小尺寸高分辨率面板中的应用范围。

Description

一种液晶显示面板
【技术领域】
本发明涉及液晶显示器技术领域，特别是涉及一种液晶显示面板。
【背景技术】
液晶显示器具有显示品质高、价格低廉、携带方便等优点，广泛应用在移动通讯设备、个人电脑、电视机等显示终端。目前，液晶显示器的显示模式有：扭曲向列（Twist Nematic，TN）模式，垂直对齐（Vertical Alignment，VA）模式，以及多域垂直对齐（Multi-domain Vertical Alignment，MVA）模式等。
垂直对齐（VA）模式的薄膜晶体管液晶显示器，具有高开口、高分辨率、广视角等特点，为液晶电视等大尺寸面板所采用。对于垂直对齐（VA）模式的显示器，传统的液晶显示面板的电极如图1和图2所示，参照图1，薄膜晶体管（TFT）阵列基板的像素电极设计为“鱼骨状”，即通过垂直相交的条状主干电极（龙骨）将整个电极分割为多个显示区域，每个显示区域中布置有彼此间隔开的条状的分支电极；参照图2，彩膜基板（CF）的电极为膜形状，作为公共电极。图1的像素电极和图2的公共电极组合在一起所形成的液晶显示面板，其光学表现如图3所示，其缺点是在像素的中间区域处，由于液晶取向平行于偏光片的穿透轴或吸收轴，该中间区域会出现垂直相交的两条暗线。通过缩短薄膜晶体管（TFT）阵列基板像素电极的条状主干电极的宽度，可以缩短暗线的宽度。
但是上述现有技术中的液晶显示面板的电极所导致的暗线的宽度仍然较宽，影响液晶效率，从而影响在小尺寸高分辨率的面板中的应用。
【发明内容】
本发明主要解决的技术问题是提供一种液晶显示面板，能够提高像素的液晶效率，拓宽垂直对齐显示模式在小尺寸高分辨率面板中的应用范围。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种液晶显示面板，所述液晶显示面板包括：
第一基板，包括多个像素，其中，每个像素包括一个对应的像素电极，且所述像素电极包括主干电极和从所述主干电极延伸出去的分支电极；
第二基板，与所述第一基板相对设置，且其包括：
衬底基板；
公共电极层，形成在所述衬底基板上；
液晶层，夹置于所述第一基板和第二基板之间；
其中，所述公共电极层具有多个朝向所述衬底基板方向的凹陷部分，且每个所述凹陷部分正对于一个对应的所述像素电极中的所述主干电极；所述凹陷部分的形状与所述主干电极形状相同，所述凹陷部分的截面为梯形，且其开口处宽度较大。
其中，所述第二基板还包括彩色滤光层，所述彩色滤光层形成在所述衬底基板和所述公共电极层之间；其中，所述彩色滤光层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
其中，所述第二基板还包括彩色滤光层和保护层，所述彩色滤光层形成在所述衬底基板和所述保护层之间，所述保护层形成在所述彩色滤光层和所述公共电极层之间，其中，所述保护层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种液晶显示面板，所述液晶显示面板包括：
第一基板，包括多个像素，其中，每个像素包括一个对应的像素电极，且所述像素电极包括主干电极和从所述主干电极延伸出去的分支电极；
第二基板，与所述第一基板相对设置，且其包括：
衬底基板；
彩色滤光层，形成在所述衬底基板上；
公共电极层，形成在所述彩色滤光层上；
液晶层，夹置于所述第一基板和第二基板之间；
其中，在所述第二基板上开设有多个朝向所述衬底基板方向的沟槽，且每个所述沟槽正对于一个对应的所述像素电极中的所述主干电极。
其中，所述沟槽形成在所述彩色滤光层中朝向所述公共电极的一侧，且所述公共电极层具有多个凹陷部分，其分别对应地形成在所述彩色滤光层中的所述多个沟槽内。
其中，所述第二基板还包括保护层，所述保护层形成在所述彩色滤光层和所述公共电极层之间，所述沟槽形成在所述保护层中朝向所述公共电极的一侧，且所述公共电极层具有多个凹陷部分，其分别对应地形成在所述保护层中的所述多个沟槽内。
其中，所述沟槽的形状与所述主干电极形状相同。
其中，所述沟槽的截面为梯形，且其开口处宽度较大。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种液晶显示面板，所述液晶显示面板包括：
第一基板，包括多个像素，其中，每个像素包括一个对应的像素电极，且所述像素电极包括主干电极和从所述主干电极延伸出去的分支电极；
第二基板，与所述第一基板相对设置，且其包括：
衬底基板；
公共电极层，形成在所述衬底基板上；
液晶层，夹置于所述第一基板和第二基板之间；
其中，所述公共电极层具有多个朝向所述衬底基板方向的凹陷部分，且每个所述凹陷部分正对于一个对应的所述像素电极中的所述主干电极。
其中，所述第二基板还包括彩色滤光层，所述彩色滤光层形成在所述衬底基板和所述公共电极层之间；其中，所述彩色滤光层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
其中，所述第二基板还包括彩色滤光层和保护层，所述彩色滤光层形成在所述衬底基板和所述保护层之间，所述保护层形成在所述彩色滤光层和所述公共电极层之间，其中，所述保护层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
其中，所述凹陷部分的形状与所述主干电极形状相同。
其中，所述凹陷部分的截面为梯形，且其开口处宽度较大。
本发明的有益效果是：区别于现有技术的情况，本发明在第二基板与液晶层接触的一侧形成凹陷，且每个凹陷正对于一个对应的所述像素电极中的所述主干电极，该凹陷处会形成一个电场，该电场可以改善与凹陷处对应的液晶的取向，从而缩短由主干电极造成的暗线的宽度，改善垂直对齐显示模式的像素的液晶效率，拓宽垂直对齐显示模式在小尺寸高分辨率面板中的应用范围。
【附图说明】
图1是现有技术中的液晶显示面板的薄膜晶体管阵列基板的像素电极的结构示意图；
图2是现有技术中的液晶显示面板的彩膜基板的公共电极的结构示意图；
图3是图1和图2所示的液晶显示面板的电极结构的光学效果图；
图4是本发明液晶显示面板一实施方式的结构示意图；
图5是本发明液晶显示面板另一实施方式的结构示意图；
图6是本发明液晶显示面板的第一基板的像素电极一实施方式结构示意图；
图7是本发明液晶显示面板的第二基板的公共电极层一实施方式的结构示意图；
图8是本发明液晶显示面板的公共电极层一实施方式的结构示意图；
图9是现有技术中的液晶显示面板的公共电极层无凹陷部分的光学效果图；
图10是本发明液晶显示面板的光学效果图；
图11是图9和图10中直线标识处的穿透率与位置的关系图；
图12是本发明液晶显示面板另一实施方式结构示意图；
图13是图12中液晶显示面板彩色滤光层结构示意图。
【具体实施方式】
参阅图4和图5，本发明实施方式提供一种液晶显示面板，包括第一基板2、与第一基板2相对设置的第二基板1和夹置于第一基板2和第二基板1之间的液晶层3，如图6，第一基板2包括多个像素，其中，每个像素包括一个对应的像素电极，且像素电极包括主干电极21和从主干电极21延伸出去的分支电极22，主干电极21将像素分成多个区域，分支电极22分布在主干电极21分割出的多个区域中，主干电极21一般由相互垂直的两条或多条电极组成，其将对应的像素分成四个区域、六个区域、八个区域等等；一般地，第一基板2包括玻璃基板，像素电极形成在玻璃基板上；第二基板1包括衬底基板11和形成在衬底基板11上的公共电极层14，衬底基板11一般是一层透明玻璃板，公共电极层14一般是一层透明薄膜电极；其中，如图7，公共电极层14具有多个朝向衬底基板方向的凹陷部分4，且每个凹陷部分4正对于一个对应的像素电极中的主干电极21，该凹陷部分4是由公共电极层14与液晶层3接触的表面朝向衬底基板11方向凹陷以形成凹槽。
本发明实施方式在公共电极层设置多个朝向衬底基板方向的凹陷部分，且每个凹陷部分正对于一个对应的像素电极中的主干电极，该凹陷部分处会形成一个电场，该电场可以改善与凹陷部分对应的液晶的取向，从而缩短由主干电极造成的暗线的宽度，改善垂直对齐显示模式的像素的液晶效率，拓宽垂直对齐显示模式在小尺寸高分辨率面板中的应用范围。
进一步地，如图4所示，第二基板1还包括彩色滤光层12，彩色滤光层12形成在衬底基板11和公共电极层14之间；彩色滤光层12由彩色滤光膜构成，彩色滤光层12形成在衬底基板11表面，公共电极层14沉积在彩色滤光层12上；其中，彩色滤光层12中朝向公共电极层14的一侧开设有多个沟槽（图中未示出），公共电极层14中的多个凹陷部分4分别对应地形成在多个沟槽内，在本实施方式中，由于公共电极层14是形成在彩色滤光层上12，所以公共电极层14上对应沟槽的部分随着沟槽向彩色滤光层12方向凹陷形成凹陷部分4，该凹陷部分4是由公共电极层14上对应沟槽的部分整个向下凹陷形成凹槽，即在凹陷部分4，公共电极层14的厚度不变；在制程方面，衬底基板11和公共电极层14的制程与传统的制程相同，不同的是本实施方式中，在制作彩色滤光层12时，需要在彩色滤光层12上对应主干电极21的部分形成沟槽；通过在彩色滤光层12上设置沟槽，而不改变公共电极层14的厚度，使公共电极层14向彩色滤光层12方向凹陷，从而在公共电极层14上对应主干电极21的位置形成凹陷部分4，该凹陷部分4处能形成一个电场，使得对应主干电极21的液晶取向改变，进而缩短由主干电极21造成的暗线的宽度。
进一步地，如图5所示，在本发明另一个实施方式中，第二基板1还包括彩色滤光层12和保护层13，彩色滤光层12形成在衬底基板11和保护层13之间，保护层13形成在彩色滤光层12和公共电极层14之间，保护层13是为了抑制画质的恶劣，而在彩色滤光层12上形成的涂层，使彩色滤光层12表面平坦，其中，彩色滤光层12形成在衬底基板11表面，保护层13沉积在彩色滤光层12上，公共电极层14沉积在保护层13上，其中，保护层13中朝向公共电极层14的一侧开设有多个沟槽（图中未示出），公共电极层14中的多个凹陷部分4分别对应地形成在多个沟槽内；在本实施方式中，由于公共电极层14是形成在保护层13上，所以公共电极层14上对应沟槽的部分随着沟槽向彩色滤光层12方向凹陷形成凹陷部分4，该凹陷部分4是由公共电极层14上对应沟槽的部分整个向下凹陷形成凹槽，即在凹陷部分4，公共电极层14的厚度不变；在制程方面，衬底基板11、彩色滤光层12和公共电极层14的制程与传统的制程相同，不同的是本实施方式中，在制作保护层13时，需要在保护层13上对应主干电极21的部分形成沟槽；通过在保护层上设置沟槽，而不改变公共电极层的厚度，使公共电极层向保护层方向凹陷，从而在公共电极层上对应主干电极21的位置形成凹陷部分4，该凹陷部分4处能形成一个电场，使得对应主干电极21的液晶取向改变，进而缩短由主干电极21造成的暗线的宽度。
进一步地，在上述实施方式中，凹陷部分4的形状与主干电极21形状相同，即由于主干电极21一般由相互垂直的两条或多条电极组成，其将对应的像素分成四个区域、六个区域、八个区域等等，则公共电极层14上的凹陷部分4也对应的在公共电极层上形成相互垂直的两条或多条凹陷，以将对应的公共电极层部分分成四个区域、六个区域、八个区域等等，也就是说公共电极层14上的凹陷部分4的形状与主干电极21的形状完全吻合，这样能使得暗线变得最窄。
进一步地，如图8所示，凹陷部分4的截面为梯形，且其开口处宽度较大，开口是指梯形靠近第一基板2一侧的底边，这样设置能在最多的保留彩色滤光层材料或保护层材料的基础上，使窄化暗线的效果达到最佳；当然，在其它实施方式中，凹陷部分的截面也可为矩形、弓形、三角形等其它形状。
本发明实施方式的第二基板还可包括黑矩阵层和隔垫物层（图中未示出），黑矩阵层设置在彩色滤光层和衬底基板之间，其制程不变，与传统制程相同。
图9是现有技术中的液晶显示面板的公共电极层140无凹陷部分的光学效果图，图10是本发明实施方式的液晶显示面板的光学效果图，图11为图9和图10中直线标识处的穿透率与位置的关系图，其中，纵坐标表示穿透率，横坐标表示位置，从图9和图10的对比可以看出，相比于现有技术中公共电极层140无凹陷部分的情况，本发明实施方式第二基板的公共电极层140增加凹陷部分后，暗线要明显变细，从图11中可以看出，本发明实施方式的液晶显示面板的公共电极层140增加凹陷部分后，主干电极210处对应的暗线由现有技术的7微米降低为5.5微米，并且在相同位置对应的穿透率较现有技术也都有提高。
参阅图12和图13，本发明的另一个实施方式提供一种液晶显示面板，包括第一基板20、与第一基板20相对设置的第二基板10和夹置于第一基板20和第二基板10之间的液晶层30，第一基板20包括多个像素，其中，每个像素包括一个对应的像素电极，且像素电极包括主干电极210和从主干电极210延伸出去的分支电极，主干电极210将像素分成多个区域，分支电极分布在主干电极210分割出的多个区域中，主干电极210一般由相互垂直的两条或多条电极组成，其将对应的像素分成四个区域、六个区域、八个区域等等；第二基板10包括衬底基板110、形成在衬底基板110上的彩色滤光层120和形成在彩色滤光层120上的公共电极层140，衬底基板110一般是一层透明玻璃板，公共电极层140一般是一层透明薄膜电极；其中，在第二基板10上开设有多个朝向衬底基板110方向的沟槽40，且每个沟槽40正对于一个对应的像素电极中的主干电极210。
本发明实施方式在第二基板10上开设有多个朝向衬底基板110方向的沟槽40，且每个沟槽40正对于一个对应的像素电极中的主干电极210，第二基板10靠近液晶的一侧与该沟槽40对应处会形成一个电场，该电场可以改善与凹陷部分对应的液晶的取向，从而缩短由主干电极210造成的暗线的宽度，改善垂直对齐显示模式的像素的液晶效率，拓宽垂直对齐显示模式在小尺寸高分辨率面板中的应用范围。
进一步地，沟槽40形成在彩色滤光层120中朝向公共电极的一侧，且公共电极层140具有多个凹陷部分，其分别对应地形成在彩色滤光层120中的多个沟槽40内。在本实施方式中，由于公共电极层140是形成在彩色滤光层120上，所以公共电极层140上对应沟槽40的部分随着沟槽40向彩色滤光层120方向凹陷形成凹陷部分，该凹陷部分是由公共电极层140上对应沟槽40的部分整个向下凹陷形成凹槽，即在凹陷部分，公共电极层140的厚度不变；在制程方面，衬底基板110和公共电极层140的制程与传统的制程相同，不同的是本实施方式中，在制作彩色滤光层120时，需要在彩色滤光层120上对应主干电极210的部分形成沟槽40；通过在彩色滤光层120上设置沟槽40，而不改变公共电极层140的厚度，使公共电极层140向彩色滤光层120方向凹陷，从而在公共电极层140上对应主干电极210的位置形成凹陷部分，该凹陷部分处能形成一个电场，使得对应主干电极210的液晶取向改变，进而缩短由主干电极210造成的暗线的宽度。
进一步地，在本发明另一个实施方式中，第二基板还包括保护层，保护层形成在彩色滤光层和公共电极层之间，沟槽形成在保护层中朝向公共电极的一侧，且公共电极层具有多个凹陷部分，其分别对应地形成在保护层中的多个沟槽内。本实施方式中，由于公共电极层是形成在保护层上，所以公共电极层上对应沟槽的部分随着沟槽向彩色滤光层方向凹陷形成凹陷部分，该凹陷部分是由公共电极层上对应沟槽的部分整个向下凹陷形成凹槽，即在凹陷部分，公共电极层的厚度不变；在制程方面，衬底基板、彩色滤光层和公共电极层的制程与传统的制程相同，不同的是本实施方式中，在制作保护层时，需要在保护层上对应主干电极的部分形成沟槽；通过在保护层上设置沟槽，而不改变公共电极层的厚度，使公共电极层向保护层方向凹陷，从而在公共电极层上对应主干电极的位置形成凹陷部分，该凹陷部分处能形成一个电场，使得对应主干电极的液晶取向改变，进而缩短由主干电极造成的暗线的宽度。
进一步地，在上述实施方式中，沟槽的形状与主干电极形状相同；即由于主干电极一般由相互垂直的两条或多条电极组成，其将对应的像素分成四个区域、六个区域、八个区域等等，则第二基板上的沟槽也对应为相互垂直的两条或多条，也就是说第二基板上的沟槽的形状与主干电极的形状完全吻合，这样能使得暗线变得最窄。
进一步地，沟槽的截面为梯形，且其开口处宽度较大。
以上仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (13)

  1. 一种液晶显示面板，其中，所述液晶显示面板包括：
    第一基板，包括多个像素，其中，每个像素包括一个对应的像素电极，且所述像素电极包括主干电极和从所述主干电极延伸出去的分支电极；
    第二基板，与所述第一基板相对设置，且其包括：
    衬底基板；
    公共电极层，形成在所述衬底基板上；
    液晶层，夹置于所述第一基板和第二基板之间；
    其中，所述公共电极层具有多个朝向所述衬底基板方向的凹陷部分，且每个所述凹陷部分正对于一个对应的所述像素电极中的所述主干电极；所述凹陷部分的形状与所述主干电极形状相同，所述凹陷部分的截面为梯形，且其开口处宽度较大。
  2. 根据权利要求1所述的液晶显示面板，其中，所述第二基板还包括彩色滤光层，所述彩色滤光层形成在所述衬底基板和所述公共电极层之间；其中，所述彩色滤光层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
  3. 根据权利要求1所述的液晶显示面板，其中，所述第二基板还包括彩色滤光层和保护层，所述彩色滤光层形成在所述衬底基板和所述保护层之间，所述保护层形成在所述彩色滤光层和所述公共电极层之间，其中，所述保护层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
  4. 一种液晶显示面板，其中，所述液晶显示面板包括：
    第一基板，包括多个像素，其中，每个像素包括一个对应的像素电极，且所述像素电极包括主干电极和从所述主干电极延伸出去的分支电极；
    第二基板，与所述第一基板相对设置，且其包括：
    衬底基板；
    彩色滤光层，形成在所述衬底基板上；
    公共电极层，形成在所述彩色滤光层上；
    液晶层，夹置于所述第一基板和第二基板之间；
    其中，在所述第二基板上开设有多个朝向所述衬底基板方向的沟槽，且每个所述沟槽正对于一个对应的所述像素电极中的所述主干电极。
  5. 根据权利要求4所述的液晶显示面板，其中，所述沟槽形成在所述彩色滤光层中朝向所述公共电极的一侧，且所述公共电极层具有多个凹陷部分，其分别对应地形成在所述彩色滤光层中的所述多个沟槽内。
  6. 根据权利要求4所述的液晶显示面板，其中，所述第二基板还包括保护层，所述保护层形成在所述彩色滤光层和所述公共电极层之间，所述沟槽形成在所述保护层中朝向所述公共电极的一侧，且所述公共电极层具有多个凹陷部分，其分别对应地形成在所述保护层中的所述多个沟槽内。
  7. 根据权利要求4-6任一项所述的液晶显示面板，其中，所述沟槽的形状与所述主干电极形状相同。
  8. 根据权利要求4-6任一项所述的液晶显示面板，其中，所述沟槽的截面为梯形，且其开口处宽度较大。
  9. 一种液晶显示面板，其中，所述液晶显示面板包括：
    第一基板，包括多个像素，其中，每个像素包括一个对应的像素电极，且所述像素电极包括主干电极和从所述主干电极延伸出去的分支电极；
    第二基板，与所述第一基板相对设置，且其包括：
    衬底基板；
    公共电极层，形成在所述衬底基板上；
    液晶层，夹置于所述第一基板和第二基板之间；
    其中，所述公共电极层具有多个朝向所述衬底基板方向的凹陷部分，且每个所述凹陷部分正对于一个对应的所述像素电极中的所述主干电极。
  10. 根据权利要求9所述的液晶显示面板，其中，所述第二基板还包括彩色滤光层，所述彩色滤光层形成在所述衬底基板和所述公共电极层之间；其中，所述彩色滤光层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
  11. 根据权利要求9所述的液晶显示面板，其中，所述第二基板还包括彩色滤光层和保护层，所述彩色滤光层形成在所述衬底基板和所述保护层之间，所述保护层形成在所述彩色滤光层和所述公共电极层之间，其中，所述保护层中朝向所述公共电极层的一侧开设有多个沟槽，所述公共电极层中的多个所述凹陷部分分别对应地形成在所述多个沟槽内。
  12. 根据权利要求9-11任一项所述的液晶显示面板，其中，所述凹陷部分的形状与所述主干电极形状相同。
  13. 根据权利要求9-11任一项所述的液晶显示面板，其中，所述凹陷部分的截面为梯形，且其开口处宽度较大。
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