WO2016176896A1 - 像素电极及液晶显示面板 - Google Patents

像素电极及液晶显示面板 Download PDF

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Publication number
WO2016176896A1
WO2016176896A1 PCT/CN2015/081725 CN2015081725W WO2016176896A1 WO 2016176896 A1 WO2016176896 A1 WO 2016176896A1 CN 2015081725 W CN2015081725 W CN 2015081725W WO 2016176896 A1 WO2016176896 A1 WO 2016176896A1
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Prior art keywords
pixel electrode
strip
shaped pixel
electrode branches
rectangular frame
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Ceased
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PCT/CN2015/081725
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English (en)
French (fr)
Inventor
钟新辉
李泳锐
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/770,826 priority Critical patent/US9927664B2/en
Publication of WO2016176896A1 publication Critical patent/WO2016176896A1/zh
Anticipated expiration legal-status Critical
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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
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment 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
    • G02F1/1343—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
    • G02F1/133—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
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • 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
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
    • 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
    • G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a pixel electrode and a liquid crystal display panel.
  • TFT-LCD Active Thin Film Transistor-LCD
  • TN Twisted Nematic
  • STN Super Twisted Nematic
  • IPS In -Plane Switching
  • VA Vertical Alignment
  • the VA type liquid crystal display has a very high contrast ratio compared with other kinds of liquid crystal displays, generally reaching 4000-8000, and has a very wide application in large-size display, such as television.
  • the reason why the VA type liquid crystal display panel has a very high contrast is because the liquid crystal molecules are arranged perpendicular to the surface of the substrate in the uncharged dark state, and no phase difference is generated, the light leakage is extremely low, and the dark state brightness is small, which is calculated according to the contrast ratio.
  • a conventional VA liquid crystal display panel includes an upper substrate 10 , a lower substrate 20 disposed opposite the upper substrate 10 , and a liquid crystal layer 50 sandwiched between the lower substrate 10 and the upper substrate 20 , formed on the upper substrate. 10 faces the surface of the lower substrate 20 and the PI alignment layer 30 of the lower substrate 20 facing the surface of the upper substrate 10. Since the VA type liquid crystal display panel adopts a vertically rotating liquid crystal, the difference in birefringence of the liquid crystal molecules is relatively large, resulting in a serious color shift problem at a large viewing angle.
  • multi-domain VA (MVA) is usually adopted, that is, one sub-pixel is divided into a plurality of regions, and each is made The liquid crystals in the region are undulating in different directions after the voltage is applied, so that the effects seen in the respective directions tend to be average and uniform.
  • MVA multi-domain VA
  • one method is to process one side of the ITO pixel electrode 70 into a "m-shaped" pattern, and the common electrode 80 has a uniform thickness. Continuous uninterrupted planar electrode, For a particular ITO pixel electrode pattern, the resulting oblique electric field can induce liquid crystal molecules 50 in different regions to reverse in different directions.
  • FIG. 2 is a top plan view showing a side of the lower substrate 20 of an MVA type liquid crystal display panel, wherein 210 and 220 are scan lines and data lines, respectively, and one sub-pixel is divided into four areas by the pixel electrode 70.
  • the ITO pixel electrode 70 includes a "cross" keel 701, and a pixel electrode branch 702 extending from the "cross" keel 701 toward the 45°, 135°, -45°, and ⁇ 135° directions with respect to the horizontal direction.
  • a pattern spaced from the slit. 3 is a cross-sectional view of the MVA type liquid crystal display panel corresponding to AA in FIG.
  • the PI alignment layer 30 covers the pixel electrode 70 and the common electrode 80.
  • T is the transmittance
  • ⁇ is the angle between the long axis of the liquid crystal and the polarizer, and the efficiency is the largest at 45°
  • ⁇ is the phase difference, that is, the modulation effect of the liquid crystal molecules deflected by the electric field to polarize light.
  • a is the angle between the long axis of the liquid crystal molecule and the normal to the substrate, and the size is determined by the magnitude of the electric field received by the liquid crystal molecules
  • d is the cell thickness of the liquid crystal cell
  • ⁇ n is the difference between the liquid crystal length and the short axis refractive index.
  • the liquid crystal molecules 50 on the region corresponding to the "cross" keel 701 of the pixel electrode 40 shown in FIG. 2 tend not to be opposite to the liquid crystal molecules on the region corresponding to the pattern of the slit electrode spacing 702.
  • the horizontal direction is inclined in four directions of 45°, 135°, -45°, and -135°, but as shown in FIG. 5, the liquid crystal molecules 50 located on the corresponding regions of the “cross-shaped” keel 701 are inclined with respect to the horizontal direction.
  • An object of the present invention is to provide a pixel electrode capable of solving the problem of lowering the transmittance of a liquid crystal display panel caused by a "cross-shaped" keel portion of a pixel electrode in the prior art, improving the transmittance of the liquid crystal display panel, and lowering the liquid crystal.
  • the display panel requires backlight brightness to reduce power consumption.
  • Another object of the present invention is to provide a liquid crystal display panel having a high transmittance, a low requirement for backlight brightness, and low power consumption.
  • the present invention provides a pixel electrode, comprising: a rectangular frame, a plurality of first strip-shaped pixel electrode branches parallel to each other and spaced apart from each other, and a plurality of mutually parallel branches connecting the rectangular frame inside the rectangular frame a second strip-shaped pixel electrode branch spaced apart from each other, a plurality of third strip-shaped pixel electrode branches that are parallel to each other and spaced apart from each other, and a plurality of fourth strip-shaped pixel electrode branches that are parallel to each other and spaced apart from each other;
  • the plurality of first, second, third, and fourth strip-shaped pixel electrode branches are respectively inclined by 45°, 135°, -135°, and -45° with respect to the horizontal direction; the first and second strips a pixel electrode branch, and a plurality of third and fourth strip pixel electrode branches are symmetric with respect to a vertical center line of the rectangular frame, the plurality of first and fourth strip pixel electrode branches, and a plurality of second and The third strip-shaped pixel electrode branch is symmetrical with respect to a horizontal center line of the rectangular frame;
  • a portion of the plurality of first strip-shaped pixel electrode branches vertically intersects a corresponding number of second strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining first strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of fourth strip-shaped pixel electrode branches;
  • a portion of the plurality of second strip-shaped pixel electrode branches perpendicularly intersects a corresponding number of first strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining second strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of third strip-shaped pixel electrode branches;
  • a portion of the plurality of third strip-shaped pixel electrode branches vertically intersects a corresponding number of fourth strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining third strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of second strip-shaped pixel electrode branches;
  • a portion of the plurality of fourth strip-shaped pixel electrode branches vertically intersects a corresponding number of third strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining fourth strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame A perpendicular intersection with a corresponding number of first strip-shaped pixel electrode branches.
  • a first strip-shaped pixel electrode branch, a second strip-shaped pixel electrode branch, a third strip-shaped pixel electrode branch, and a fourth strip-shaped pixel electrode branch are vertically connected to each other at a center point of the rectangular frame .
  • the pixel electrode further includes a center block disposed at a center point of the rectangular frame, and first and second strip-shaped pixel electrode branches vertically adjacent to a center point of the rectangular frame, and closest to the center of the rectangular frame Second and third strip-shaped pixel electrode branches that are perpendicularly connected to each other, The third and fourth strip-shaped pixel electrode branches that are vertically connected to each other closest to the center point of the rectangular bezel, and the fourth and first strip-shaped pixel electrode branches that are vertically connected to each other closest to the center point of the rectangular bezel are respectively The center blocks are connected.
  • the center block has a rectangular shape.
  • the material of the pixel electrode is ITO.
  • the present invention also provides a liquid crystal display panel, comprising: an upper substrate, a lower substrate disposed opposite to the upper substrate, a common electrode disposed on a side of the upper substrate facing the lower substrate, and a surface disposed on the lower substrate a pixel electrode on one side of the upper substrate, and a liquid crystal layer interposed between the common electrode and the pixel electrode;
  • the lower substrate has a gate line extending in a horizontal direction, a data line extending in a vertical direction, and a TFT, a gate of the TFT is connected to the gate line, a source is connected to the data line, and a drain is connected to the pixel electrode. ;
  • the pixel electrode includes: a rectangular frame, a plurality of first strip-shaped pixel electrode branches parallel to each other and spaced apart from each other inside the rectangular frame, and a plurality of second strip-shaped pixel electrodes that are parallel to each other and spaced apart from each other a branch, a plurality of third strip-shaped pixel electrode branches that are parallel to each other and spaced apart from each other, and a plurality of fourth strip-shaped pixel electrode branches that are parallel to each other and spaced apart from each other;
  • the plurality of first, second, third, and fourth strip-shaped pixel electrode branches are respectively inclined by 45°, 135°, -135°, and -45° with respect to the horizontal direction; the first and second strips a pixel electrode branch, and a plurality of third and fourth strip-shaped four-pixel electrode branches are symmetric with respect to a vertical center line of the rectangular frame, the plurality of first and fourth strip-shaped pixel electrode branches, and a plurality of second and The third strip-shaped pixel electrode branch is symmetrical with respect to a horizontal center line of the rectangular frame;
  • a portion of the plurality of first strip-shaped pixel electrode branches vertically intersects a corresponding number of second strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining first strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of fourth strip-shaped pixel electrode branches;
  • a portion of the plurality of second strip-shaped pixel electrode branches perpendicularly intersects a corresponding number of first strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining second strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of third strip-shaped pixel electrode branches;
  • a portion of the plurality of third strip-shaped pixel electrode branches vertically intersects a corresponding number of fourth strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining third strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of second strip-shaped pixel electrode branches;
  • a portion of the plurality of fourth strip-shaped pixel electrode branches vertically intersects a corresponding number of third strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining fourth strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame A perpendicular intersection with a corresponding number of first strip-shaped pixel electrode branches.
  • first strip-shaped pixel electrode branch and a second strip image at a center point of the rectangular frame The element electrode branch, a third strip-shaped pixel electrode branch, and a fourth strip-shaped pixel electrode branch are perpendicularly connected to each other.
  • the pixel electrode further includes a center block disposed at a center point of the rectangular frame, and first and second strip-shaped pixel electrode branches vertically adjacent to a center point of the rectangular frame, and closest to the center of the rectangular frame Second and third strip-shaped pixel electrode branches perpendicularly connected to each other, third and fourth strip-shaped pixel electrode branches vertically adjacent to a center point of the rectangular bezel, and closest to a center point of the rectangular frame The fourth, first strip-shaped pixel electrode branches that are vertically connected to each other are respectively connected to the center block.
  • the center block has a rectangular shape.
  • the material of the pixel electrode is ITO.
  • the gate line and the data line at least partially overlap with a rectangular frame of the pixel electrode.
  • the present invention also provides a liquid crystal display panel, comprising: an upper substrate, a lower substrate disposed opposite to the upper substrate, a common electrode disposed on a side of the upper substrate facing the lower substrate, and a surface disposed on the lower substrate a pixel electrode on one side of the upper substrate, and a liquid crystal layer interposed between the common electrode and the pixel electrode;
  • the lower substrate has a gate line extending in a horizontal direction, a data line extending in a vertical direction, and a TFT, a gate of the TFT is connected to the gate line, a source is connected to the data line, and a drain is connected to the pixel electrode. ;
  • the pixel electrode includes: a rectangular frame, a plurality of first strip-shaped pixel electrode branches parallel to each other and spaced apart from each other inside the rectangular frame, and a plurality of second strip-shaped pixel electrodes that are parallel to each other and spaced apart from each other a branch, a plurality of third strip-shaped pixel electrode branches that are parallel to each other and spaced apart from each other, and a plurality of fourth strip-shaped pixel electrode branches that are parallel to each other and spaced apart from each other;
  • the plurality of first, second, third, and fourth strip-shaped pixel electrode branches are respectively inclined by 45°, 135°, -135°, and -45° with respect to the horizontal direction; the first and second strips a pixel electrode branch, and a plurality of third and fourth strip pixel electrode branches are symmetric with respect to a vertical center line of the rectangular frame, the plurality of first and fourth strip pixel electrode branches, and a plurality of second and The third strip-shaped pixel electrode branch is symmetrical with respect to a horizontal center line of the rectangular frame;
  • a portion of the plurality of first strip-shaped pixel electrode branches vertically intersects a corresponding number of second strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining first strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of fourth strip-shaped pixel electrode branches;
  • a portion of the plurality of second strip-shaped pixel electrode branches perpendicularly intersects a corresponding number of first strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining second strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of third strip-shaped pixel electrode branches;
  • a portion of the plurality of third strip-shaped pixel electrode branches along a vertical center line of the rectangular frame The number of fourth strip-shaped pixel electrode branches intersect perpendicularly, and the remaining third strip-shaped pixel electrode branches perpendicularly intersect the corresponding number of second strip-shaped pixel electrode branches along the horizontal center line of the rectangular frame;
  • a portion of the plurality of fourth strip-shaped pixel electrode branches vertically intersects a corresponding number of third strip-shaped pixel electrode branches along a vertical center line of the rectangular frame, and the remaining fourth strip-shaped pixel electrode branches along a horizontal center line of the rectangular frame Vertically intersecting a corresponding number of first strip-shaped pixel electrode branches;
  • a first strip pixel electrode branch, a second strip pixel electrode branch, a third strip pixel electrode branch, and a fourth strip pixel electrode branch are mutually Vertical connection
  • the pixel electrode further includes a center block disposed at a center point of the rectangular frame, and first and second strip-shaped pixel electrode branches vertically adjacent to a center point of the rectangular frame, closest to the rectangle Second and third strip-shaped pixel electrode branches perpendicularly connected to each other at a center point of the bezel, third and fourth strip-shaped pixel electrode branches vertically adjacent to a center point of the rectangular bezel, and closest to the rectangular frame
  • the fourth and first strip-shaped pixel electrode branches of the central point that are vertically connected to each other are respectively connected to the center block;
  • the gate line and the data line at least partially overlap the rectangular frame of the pixel electrode.
  • the invention provides a pixel electrode, which adopts a structure without a "cross-shaped” keel, and can solve the transmittance of the liquid crystal display panel caused by the "cross-shaped" keel portion of the pixel electrode in the prior art.
  • the problem of reduction is improved, the transmittance of the liquid crystal display panel is improved, the demand for backlight brightness of the liquid crystal display panel is lowered, and power consumption is reduced.
  • the liquid crystal display panel provided by the invention adopts a structure without a "cross-shaped" keel, and has a high transmittance, a low demand for backlight brightness, and low power consumption.
  • FIG. 1 is a schematic cross-sectional view of a conventional VA type liquid crystal display panel
  • FIG. 2 is a plan top plan view showing a lower substrate side of a conventional MVA liquid crystal display panel
  • FIG. 3 is a schematic cross-sectional view of a conventional MVA type liquid crystal display panel corresponding to A-A in FIG. 2;
  • Figure 4 is a plan view showing a common electrode in the MVA type liquid crystal display panel shown in Figure 3;
  • FIG. 5 is a schematic view showing the reverse direction of liquid crystal molecules in the MVA liquid crystal display panel shown in FIG. 3;
  • Figure 6 is a plan view showing a first embodiment of a pixel electrode of the present invention.
  • Figure 7 is a plan view showing a second embodiment of a pixel electrode of the present invention.
  • FIG. 8 is a schematic cross-sectional structural view of a liquid crystal display panel of the present invention.
  • FIG. 9 is a top plan view showing a side of a lower substrate of a liquid crystal display panel of the present invention.
  • FIG. 10 is another top plan view of the lower substrate side of the liquid crystal display panel of the present invention.
  • FIG. 6 shows a first embodiment of a pixel electrode according to the present invention, comprising: a rectangular frame 40, and a plurality of first strip-shaped pixel electrode branches that are parallel to each other and spaced apart from each other in the interior of the rectangular frame 40. 41.
  • the plurality of first, second, third, and fourth strip-shaped pixel electrode branches 41, 42, 43, 44 are respectively inclined by 45°, 135°, -135°, and -45° with respect to the horizontal direction;
  • the first and second strip-shaped pixel electrode branches 41, 42 and the plurality of third and fourth strip-shaped pixel electrode branches 43, 44 are symmetrical with respect to a vertical center line of the rectangular frame 40, the plurality of first and The fourth strip-shaped pixel electrode branches 41, 44, and the plurality of second and third strip-shaped pixel electrode branches 42, 43 are symmetrical with respect to a horizontal center line of the rectangular bezel 40.
  • the pixel electrode of the present invention does not contain a "cross-shaped" keel structure as compared with the pixel electrode of the prior art, but a part of the plurality of first strip-shaped pixel electrode branches 41 along the vertical center line of the rectangular frame 40 and Corresponding numbers of the second strip-shaped pixel electrode branches 42 intersect perpendicularly, and the remaining first strip-shaped pixel electrode branches 41 intersect perpendicularly with the corresponding number of fourth strip-shaped pixel electrode branches 44 along the horizontal center line of the rectangular frame 40; A portion of the two strip-shaped pixel electrode branches 42 vertically intersects a corresponding number of first strip-shaped pixel electrode branches 41 along a vertical center line of the rectangular bezel 40, and the remaining second strip-shaped pixel electrode branches 42 are along the level of the rectangular bezel 40.
  • the center line vertically intersects the corresponding number of third strip-shaped pixel electrode branches 43; a portion of the plurality of third strip-shaped pixel electrode branches 43 are along a vertical center line of the rectangular bezel 40 and a corresponding number of fourth strip-shaped pixel electrode branches 44 intersect perpendicularly, and the remaining third strip-shaped pixel electrode branches 43 vertically intersect the corresponding number of second strip-shaped pixel electrode branches 42 along the horizontal center line of the rectangular frame 40; Third vertical centerline and a corresponding number of rectangular border strip along a portion of the pixel electrode 40 in the branch 44
  • the pixel electrode branches 43 intersect perpendicularly, and the remaining fourth strip pixel electrode branches 44 vertically intersect the corresponding number of first strip pixel electrode branches 41 along the horizontal center line of the rectangular frame 40.
  • a first strip-shaped pixel electrode branch 41 at the center point of the rectangular frame 40, a first strip-shaped pixel electrode branch 41, a second strip-shaped pixel electrode branch 42, and a third strip-shaped pixel electrode branch 43.
  • a fourth strip-shaped pixel electrode branch 44 is perpendicularly connected to each other.
  • the material of the pixel electrode is ITO.
  • the plurality of first, second, third, and fourth strip-shaped pixel electrode branches 41, 42, 43, 44 respectively correspond to four sub-pixels region.
  • the pixel electrode of the present invention does not have a "cross-shaped" keel structure, the liquid crystal molecules on the corresponding region of the "cross-shaped" keel are not inclined by 0° or 90° with respect to the horizontal direction.
  • Fig. 7 shows a second embodiment of the pixel electrode of the present invention.
  • the pixel electrode further includes a center block 45 disposed at a center point of the rectangular frame 40, and the first vertical connection of the center point of the rectangular frame 40 1.
  • the second strip-shaped pixel electrode branches 41, 42 and the second and third strip-shaped pixel electrode branches 42, 43 closest to the center point of the rectangular frame 40, which are closest to each other, are closest to the center point of the rectangular frame 40.
  • the third and fourth strip-shaped pixel electrode branches 43, 44 which are mutually perpendicularly connected to each other, and the fourth and first strip-shaped pixel electrode branches 44, 41 which are vertically connected to each other closest to the center point of the rectangular frame 40 are respectively The center block 45 is connected.
  • the shape of the center block 45 is a rectangle.
  • the present invention also provides a liquid crystal display panel.
  • the liquid crystal display panel of the present invention includes: an upper substrate 1 , a lower substrate 2 disposed opposite to the upper substrate 1 , and a common electrode 3 disposed on a side of the upper substrate 1 facing the lower substrate 2 , The pixel electrode 4 on the side of the lower substrate 2 facing the upper substrate 1 and the liquid crystal layer 5 interposed between the common electrode 3 and the pixel electrode 4 are provided. 8 also illustrates an alignment layer 6 covering the common electrode 3 and the pixel electrode 4 to align the liquid crystal layer 5.
  • a polymer-stabilized vertical alignment polymer- The liquid crystal layer 5 is aligned in a manner of stabilized vertical alignment (PSVA).
  • the lower substrate 2 has a gate line 21 extending in a horizontal direction,
  • the data line 22 extending in the vertical direction and the TFT, the gate of the TFT is connected to the gate line 21, the source is connected to the data line 22, and the drain is connected to the pixel electrode 4 via a via.
  • the pixel electrode 4 is different from the pixel electrode of the prior art having a “cross-shaped” keel structure, and includes a rectangular frame 40 , and the rectangular frame 40 is connected to the inside of the rectangular frame 40 .
  • a plurality of first strip-shaped pixel electrode branches 41 that are parallel to each other and spaced apart from each other
  • a plurality of second strip-shaped pixel electrode branches 42 that are parallel to each other and spaced apart from each other
  • a plurality of third strip-shaped pixel electrode branches 43 that are parallel to each other and spaced apart from each other
  • a plurality of fourth strip-shaped pixel electrode branches 44 that are parallel to each other and spaced apart from each other.
  • the plurality of first, second, third, and fourth strip-shaped pixel electrode branches 41, 42, 43, 44 are respectively inclined by 45°, 135°, -135°, and -45° with respect to the horizontal direction;
  • the first and second strip-shaped pixel electrode branches 41, 42 and the plurality of third and fourth strip-shaped pixel electrode branches 43, 44 are symmetrical with respect to a vertical center line of the rectangular frame 40, the plurality of first and The fourth strip-shaped pixel electrode branches 41, 44, and the plurality of second and third strip-shaped pixel electrode branches 42, 43 are symmetrical with respect to a horizontal center line of the rectangular bezel 40.
  • the second strip-shaped pixel electrode branches 42 intersect perpendicularly; a portion of the plurality of fourth strip-shaped pixel electrode branches 44 are along a vertical centerline of the rectangular bezel 40 and a corresponding number of third
  • the strip-shaped pixel electrode branches 43 vertically intersect, and the remaining fourth strip-shaped pixel electrode branches 44 vertically intersect the corresponding number of first strip-shaped pixel electrode branches 41 along the horizontal center line of the rectangular bezel 40.
  • the pixel electrode 4 can be a center of the rectangular frame 40, a first strip-shaped pixel electrode branch 41, a second strip-shaped pixel electrode branch 42, and a third strip-shaped pixel electrode branch. 43.
  • a fourth strip-shaped pixel electrode branch 44 is perpendicularly connected to each other.
  • the pixel electrode 4 may also be provided with a center block 45 at a center point of the rectangular frame 40, and first and second strip-shaped pixel electrodes vertically connected to each other at a center point of the rectangular frame 40.
  • the branches 41, 42 and the second and third strip-shaped pixel electrode branches 42, 43 which are closest to each other at the center point of the rectangular frame 40, and the phase closest to the center point of the rectangular frame 40
  • the third and fourth strip-shaped pixel electrode branches 43, 44 which are mutually perpendicularly connected, and the fourth and first strip-shaped pixel electrode branches 44, 41 which are vertically connected to each other closest to the center point of the rectangular bezel 40 are respectively
  • the center block 45 is connected.
  • the shape of the center block 45 is a rectangle.
  • the gate line 21 and the data line 22 at least partially overlap the rectangular side 40 of the pixel electrode 4, and the area of the effective display area can be fully utilized.
  • the plurality of first, second, third, and fourth strip-shaped pixel electrode branches 41, 42, 43, and 44 of the pixel electrode 4 respectively correspond to four regions of one sub-pixel.
  • the pixel electrode 4 does not have a "cross-shaped" keel structure, the liquid crystal molecules on the corresponding region of the "cross-shaped” keel do not tilt in the direction of 0 or 90° with respect to the horizontal direction.
  • the pixel electrode of the present invention adopts a structure without a "cross-shaped" keel, which can solve the problem of lowering the transmittance of the liquid crystal display panel caused by the "cross-shaped" keel portion of the pixel electrode in the prior art. Improve the transmittance of the liquid crystal display panel, reduce the demand for backlight brightness of the liquid crystal display panel, and reduce the power consumption.
  • the liquid crystal display panel of the present invention adopts a structure without a "cross-shaped" keel, and has a high transmittance, a low demand for backlight brightness, and low power consumption.

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Abstract

一种像素电极及液晶显示面板，该像素电极包括：矩形边框(40)、于所述矩形边框(40)内部连接该矩形边框(40)的数个第一条状像素电极分支(41)、数个第二条状像素电极分支(42)、数个第三条状像素电极分支(43)、及数个第四条状像素电极分支(44)，由于该像素电极不含"十字形"龙骨，能够解决现有技术中由像素电极的"十字形"龙骨部分导致的液晶显示面板穿透率降低的问题，提高液晶显示面板的穿透率，降低液晶显示面板对背光亮度的需求，降低使用功耗。所述液晶显示面板，其像素电极(4)采用不含"十字形"龙骨的结构，穿透率较高，对背光亮度的需求较低，使用功耗较低。

Description

像素电极及液晶显示面板 技术领域
本发明涉及显示技术领域，尤其涉及一种像素电极及液晶显示面板。
背景技术
主动式薄膜晶体管液晶显示器(Thin Film Transistor-LCD，TFT-LCD)近年来得到了飞速的发展和广泛的应用。就目前主流市场上的TFT-LCD显示面板而言，可分为三种类型，分别是扭曲向列(Twisted Nematic，TN)或超扭曲向列(Super Twisted Nematic，STN)型，平面转换(In-Plane Switching，IPS)型、及垂直配向(Vertical Alignment，VA)型。其中VA型液晶显示器相对其他种类的液晶显示器具有极高的对比度，一般可达到4000-8000，在大尺寸显示，如电视等方面具有非常广的应用。
VA型液晶显示面板之所以具有极高的对比度是因为在不加电的暗态时，液晶分子垂直于基板表面排列，不产生任何相位差，漏光极低，暗态亮度很小，根据对比度计算公式暗态亮度越低，则对比度越高。为了使VA型液晶显示面板中的液晶分子能够垂直于基板表面排列，需要对液晶分子进行垂直配向处理，现行最为普遍的做法是在上、下基板表面的特定区域涂布垂直配向剂，垂直配向剂一般包含大量的化学溶剂NMP(N-甲基吡咯烷酮)以及高分子材料聚酰亚胺(Polyimide，PI)等成分，然后将基板在高温(一般200摄氏度以上)下进行长时间烘烤，使配向剂中的溶剂被烤干，从而在基板表面形成PI配向层。如图1所示，传统的VA型液晶显示面板包括：上基板10、与上基板10相对设置的下基板20、夹于下基板10和上基板20之间的液晶层50，形成于上基板10面向下基板20一侧表面及下基板20面向上基板10一侧表面的PI配向层30。由于VA型液晶显示面板采用垂直转动的液晶，液晶分子双折射率的差异比较大，导致大视角下的色偏(color shift)问题比较严重。
为了使VA型液晶显示面板获得更好的广视角特性，改善色偏问题，通常会采取多畴VA技术(multi-domain VA，MVA)，即将一个子像素划分成多个区域，并使每个区域中的液晶在施加电压后倒伏向不同的方向，从而使各个方向看到的效果趋于平均，一致。实现MVA技术的方法有多种，请参阅图2、图3、及图4，其中一种方法是将一侧的ITO像素电极70处理成“米字型”图案，公共电极80为厚度均匀、连续不间断的平面电极，由 于特殊的ITO像素电极图案，其产生的倾斜电场可以诱导不同区域中的液晶分子50倒向不同的方向。
图2所示为一种MVA型液晶显示面板的下基板20一侧的平面俯视示意图，其中210与220分别为扫描线与数据线，一个子像素被像素电极70划分成了四个区域。所述ITO像素电极70包括“十字形”龙骨701、及相对于水平方向自该“十字形”龙骨701分别向45°、135°、-45°、及-135°方向延伸的像素电极分支702与狭缝间隔的图案。图3所示为该MVA型液晶显示面板在对应图2中A-A处的剖面示意图，其中具有狭缝的像素电极70设于平坦的下钝化层60上，平面型的公共电极80设于平坦的上钝化层90上，PI配向层30覆盖于像素电极70及公共电极80上。
根据VA型液晶显示面板的穿透率公式：
Figure PCTCN2015081725-appb-000001
其中T为穿透率，ΔΦ为液晶长轴与偏光片夹角，45°时效率最大；Γ为相位差，即由液晶分子在电场驱动下偏转对偏振光的调制效果。
Γ的计算公式为：
Γ＝cos(a)*2π*Δn*d/λ  (2)
其中，a为液晶分子长轴与基板法线的夹角，其大小受液晶分子受到的电场大小决定，d为液晶盒盒厚，Δn为液晶长、短轴折射率差。
由以上穿透率公式可知，由于在子像素的四个区域内，ITO像素电极70具有分别向相对于水平方向倾斜45°、135°、-45°、及-135°方向延伸的像素电极分支702与狭缝间隔的图案(上、下偏光片方向分别为0°、90°)，液晶分子长轴将分别向相对于水平方向倾斜45°、135°、-45°、及-135°方向倒伏，穿透率公式中sin22ΔΦ＝1，能够实现穿透率的最大化。
但是如图2所示的像素电极40的的“十字形”龙骨701所对应区域上的液晶分子50往往不能像像素电极分支702与狭缝间隔的图案所对应区域上的液晶分子那样向相对于水平方向倾斜45°、135°、-45°、及-135°四个方向倒伏，而是如图5所示，位于“十字形”龙骨701对应区域上的液晶分子50向相对于水平方向倾斜0°、或90°方向倒伏，使得穿透率公式中sin22ΔΦ＝0，显示为不透光态，造成液晶显示面板的整体穿透率下降。
发明内容
本发明的目的在于提供一种像素电极，能够解决现有技术中由像素电极的“十字形”龙骨部分导致的液晶显示面板穿透率降低的问题，提高液晶显示面板的穿透率，降低液晶显示面板对背光亮度的需求，降低使用功耗。
本发明的目的还在于提供一种液晶显示面板，其穿透率较高，对背光亮度的需求较低，使用功耗较低。
为实现上述目的，本发明提供了一种像素电极，包括：矩形边框、于所述矩形边框内部连接该矩形边框的数个相互平行且相互间隔的第一条状像素电极分支、数个相互平行且相互间隔的第二条状像素电极分支、数个相互平行且相互间隔的第三条状像素电极分支、及数个相互平行且相互间隔的第四条状像素电极分支；
数个第一、第二、第三、与第四条状像素电极分支分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支、以及数个第三与第四条状像素电极分支相对于矩形边框的竖直中心线对称，所述数个第一与第四条状像素电极分支、以及数个第二与第三条状像素电极分支相对于矩形边框的水平中心线对称；
数个第一条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第二条状像素电极分支垂直相交，剩余的第一条状像素电极分支沿矩形边框的水平中心线与对应数量的第四条状像素电极分支垂直相交；
数个第二条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第一条状像素电极分支垂直相交，剩余的第二条状像素电极分支沿矩形边框的水平中心线与对应数量的第三条状像素电极分支垂直相交；
数个第三条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第四条状像素电极分支垂直相交，剩余的第三条状像素电极分支沿矩形边框的水平中心线与对应数量的第二条状像素电极分支垂直相交；
数个第四条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第三条状像素电极分支垂直相交，剩余的第四条状像素电极分支沿矩形边框的水平中心线与对应数量的第一条状像素电极分支垂直相交。
在所述矩形边框的中心点，一第一条状像素电极分支、一第二条状像素电极分支、一第三条状像素电极分支、与一第四条状像素电极分支四者相互垂直连接。
所述像素电极还包括设于所述矩形边框中心点的一中心块，最靠近所述矩形边框中心点的相互垂直连接的第一、第二条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第二、第三条状像素电极分支、 最靠近所述矩形边框中心点的相互垂直连接的第三、第四条状像素电极分支、及最靠近所述矩形边框中心点的相互垂直连接的第四、第一条状像素电极分支分别与所述中心块相连接。
所述中心块呈矩形。
所述像素电极的材料为ITO。
本发明还提供一种液晶显示面板，包括：上基板、与所述上基板相对设置的下基板、设置于所述上基板面向所述下基板一侧的公共电极、设于所述下基板面向所述上基板一侧的像素电极、及夹设于所述公共电极与像素电极之间的液晶层；
所述下基板具有沿水平方向延伸的栅极线、沿竖直方向延伸的数据线、及TFT，所述TFT的栅极连接栅极线、源极连接数据线、漏极连接所述像素电极；
所述像素电极包括：矩形边框、于所述矩形边框内部连接该矩形边框的数个相互平行且相互间隔的第一条状像素电极分支、数个相互平行且相互间隔的第二条状像素电极分支、数个相互平行且相互间隔的第三条状像素电极分支、及数个相互平行且相互间隔的第四条状像素电极分支；
数个第一、第二、第三、与第四条状像素电极分支分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支、以及数个第三与第条状四像素电极分支相对于矩形边框的竖直中心线对称，所述数个第一与第四条状像素电极分支、以及数个第二与第三条状像素电极分支相对于矩形边框的水平中心线对称；
数个第一条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第二条状像素电极分支垂直相交，剩余的第一条状像素电极分支沿矩形边框的水平中心线与对应数量的第四条状像素电极分支垂直相交；
数个第二条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第一条状像素电极分支垂直相交，剩余的第二条状像素电极分支沿矩形边框的水平中心线与对应数量的第三条状像素电极分支垂直相交；
数个第三条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第四条状像素电极分支垂直相交，剩余的第三条状像素电极分支沿矩形边框的水平中心线与对应数量的第二条状像素电极分支垂直相交；
数个第四条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第三条状像素电极分支垂直相交，剩余的第四条状像素电极分支沿矩形边框的水平中心线与对应数量的第一条状像素电极分支垂直相交。
在所述矩形边框的中心点，一第一条状像素电极分支、一第二条状像 素电极分支、一第三条状像素电极分支、与一第四条状像素电极分支四者相互垂直连接。
所述像素电极还包括设于所述矩形边框中心点的一中心块，最靠近所述矩形边框中心点的相互垂直连接的第一、第二条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第二、第三条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第三、第四条状像素电极分支、及最靠近所述矩形边框中心点的相互垂直连接的第四、第一条状像素电极分支分别与所述中心块相连接。
所述中心块呈矩形。
所述像素电极的材料为ITO。
所述栅极线、数据线与所述像素电极的矩形边框至少部分重叠。
本发明还提供一种液晶显示面板，包括：上基板、与所述上基板相对设置的下基板、设置于所述上基板面向所述下基板一侧的公共电极、设于所述下基板面向所述上基板一侧的像素电极、及夹设于所述公共电极与像素电极之间的液晶层；
所述下基板具有沿水平方向延伸的栅极线、沿竖直方向延伸的数据线、及TFT，所述TFT的栅极连接栅极线、源极连接数据线、漏极连接所述像素电极；
所述像素电极包括：矩形边框、于所述矩形边框内部连接该矩形边框的数个相互平行且相互间隔的第一条状像素电极分支、数个相互平行且相互间隔的第二条状像素电极分支、数个相互平行且相互间隔的第三条状像素电极分支、及数个相互平行且相互间隔的第四条状像素电极分支；
数个第一、第二、第三、与第四条状像素电极分支分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支、以及数个第三与第四条状像素电极分支相对于矩形边框的竖直中心线对称，所述数个第一与第四条状像素电极分支、以及数个第二与第三条状像素电极分支相对于矩形边框的水平中心线对称；
数个第一条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第二条状像素电极分支垂直相交，剩余的第一条状像素电极分支沿矩形边框的水平中心线与对应数量的第四条状像素电极分支垂直相交；
数个第二条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第一条状像素电极分支垂直相交，剩余的第二条状像素电极分支沿矩形边框的水平中心线与对应数量的第三条状像素电极分支垂直相交；
数个第三条状像素电极分支中的一部分沿矩形边框的竖直中心线与对 应数量的第四条状像素电极分支垂直相交，剩余的第三条状像素电极分支沿矩形边框的水平中心线与对应数量的第二条状像素电极分支垂直相交；
数个第四条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第三条状像素电极分支垂直相交，剩余的第四条状像素电极分支沿矩形边框的水平中心线与对应数量的第一条状像素电极分支垂直相交；
其中，在所述矩形边框的中心点，一第一条状像素电极分支、一第二条状像素电极分支、一第三条状像素电极分支、与一第四条状像素电极分支四者相互垂直连接；
其中，所述像素电极还包括设于所述矩形边框中心点的一中心块，最靠近所述矩形边框中心点的相互垂直连接的第一、第二条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第二、第三条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第三、第四条状像素电极分支、及最靠近所述矩形边框中心点的相互垂直连接的第四、第一条状像素电极分支分别与所述中心块相连接；
其中，所述栅极线、数据线与所述像素电极的矩形边框至少部分重叠。
本发明的有益效果：本发明提供的一种像素电极，采用不含“十字形”龙骨的结构，能够解决现有技术中由像素电极的“十字形”龙骨部分导致的液晶显示面板穿透率降低的问题，提高液晶显示面板的穿透率，降低液晶显示面板对背光亮度的需求，降低使用功耗。本发明提供的一种液晶显示面板，其像素电极采用不含“十字形”龙骨的结构，穿透率较高，对背光亮度的需求较低，使用功耗较低。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为一种现有的VA型液晶显示面板的剖面示意图；
图2为一种现有的MVA型液晶显示面板的下基板一侧的平面俯视示意图；
图3为一种现有的MVA型液晶显示面板在对应图2中A-A处的剖面示意图；
图4为图3所示MVA型液晶显示面板中的公共电极的平面图；
图5为图3所示的MVA型液晶显示面板中的液晶分子倒向示意图；
图6为本发明的像素电极的第一实施例的平面示意图；
图7为本发明的像素电极的第二实施例的平面示意图；
图8为本发明的液晶显示面板的剖面结构示意图；
图9为本发明液晶显示面板的下基板一侧的一种平面俯视示意图；
图10为本发明液晶显示面板的下基板一侧的另一种平面俯视示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
本发明首先提供一种像素电极。图6所示为本发明的像素电极的第一实施例，包括：矩形边框40、于所述矩形边框40内部连接该形边框40的数个相互平行且相互间隔的第一条状像素电极分支41、数个相互平行且相互间隔的第二条状像素电极分支42、数个相互平行且相互间隔的第三条状像素电极分支43、及数个相互平行且相互间隔的第四条状像素电极分支44。
数个第一、第二、第三、与第四条状像素电极分支41、42、43、44分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支41、42、以及数个第三与第四条状像素电极分支43、44相对于矩形边框40的竖直中心线对称，所述数个第一与第四条状像素电极分支41、44、以及数个第二与第三条状像素电极分支42、43相对于矩形边框40的水平中心线对称。
本发明的像素电极与现有技术中的像素电极相比，不含“十字形”龙骨结构，而是数个第一条状像素电极分支41中的一部分沿矩形边框40的竖直中心线与对应数量的第二条状像素电极分支42垂直相交，剩余的第一条状像素电极分支41沿矩形边框40的水平中心线与对应数量的第四条状像素电极分支44垂直相交；数个第二条状像素电极分支42中的一部分沿矩形边框40的竖直中心线与对应数量的第一条状像素电极分支41垂直相交，剩余的第二条状像素电极分支42沿矩形边框40的水平中心线与对应数量的第三条状像素电极分支43垂直相交；数个第三条状像素电极分支43中的一部分沿矩形边框40的竖直中心线与对应数量的第四条状像素电极分支44垂直相交，剩余的第三条状像素电极分支43沿矩形边框40的水平中心线与对应数量的第二条状像素电极分支42垂直相交；数个第四条状像素电极分支44中的一部分沿矩形边框40的竖直中心线与对应数量的第三条 状像素电极分支43垂直相交，剩余的第四条状像素电极分支44沿矩形边框40的水平中心线与对应数量的第一条状像素电极分支41垂直相交。
在图6所示的第一实施例中，在所述矩形边框40的中心点，一第一条状像素电极分支41、一第二条状像素电极分支42、一第三条状像素电极分支43、与一第四条状像素电极分支44四者相互垂直连接。
优选的，所述像素电极的材料为ITO。
将本发明的像素电极应用于液晶显示面板时，所述数个第一、第二、第三、与第四条状像素电极分支41、42、43、44分别对应于一个子像素的四个区域。对液晶显示面板施加电压时，由于本发明的像素电极不含“十字形”龙骨结构，不存在“十字形”龙骨对应区域上的液晶分子倒向相对于水平方向倾斜0°或90°方向使得穿透率下降的的问题，一个子像素的四个区域中的液晶分子分别倒向相对于水平方向倾斜45°、135°、-135°、-45°方向，任一区域中均有sin22ΔΦ＝1，从而使得液晶效率最大化，穿透率提高。
图7所示为本发明的像素电极的第二实施例。该第二实施例与第一实施例的区别在于：所述像素电极还包括设于所述矩形边框40中心点的一中心块45，最靠近所述矩形边框40中心点的相互垂直连接的第一、第二条状像素电极分支41、42、最靠近所述矩形边框40中心点的相互垂直连接的第二、第三条状像素电极分支42、43、最靠近所述矩形边框40中心点的相互垂直连接的第三、第四条状像素电极分支43、44、及最靠近所述矩形边框40中心点的相互垂直连接的第四、第一条状像素电极分支44、41分别与所述中心块45相连接。
优选的，所述中心块45的形状为矩形。
其余均与第一实施例相同，此处不再赘述。
基于同一个发明构思，本发明还提供一种液晶显示面板。请参阅图8，本发明的液晶显示面板包括：上基板1、与所述上基板1相对设置的下基板2、设置于所述上基板1面向所述下基板2一侧的公共电极3、设于所述下基板2面向所述上基板1一侧的像素电极4、及夹设于所述公共电极3与像素电极4之间的液晶层5。图8还示意出了覆盖所述公共电极3与像素电极4的配向层6，以对液晶层5进行配向，当然，也可以不设置配向层6，而是采用聚合物稳定垂直配向(polymer-stabilized vertical alignment，PSVA)的方式对液晶层5进行配向。
请参阅图9或图10，所述下基板2具有沿水平方向延伸的栅极线21、 沿竖直方向延伸的数据线22、及TFT，所述TFT的栅极连接栅极线21、源极连接数据线22、漏极经由一过孔连接所述像素电极4。
如图9或图10所示，所述像素电极4与现有技术中的含有“十字形”龙骨结构的像素电极不同，包括矩形边框40、于所述矩形边框40内部连接该矩形边框40的数个相互平行且相互间隔的第一条状像素电极分支41、数个相互平行且相互间隔的第二条状像素电极分支42、数个相互平行且相互间隔的第三条状像素电极分支43、及数个相互平行且相互间隔的第四条状像素电极分支44。
数个第一、第二、第三、与第四条状像素电极分支41、42、43、44分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支41、42、以及数个第三与第四条状像素电极分支43、44相对于矩形边框40的竖直中心线对称，所述数个第一与第四条状像素电极分支41、44、以及数个第二与第三条状像素电极分支42、43相对于矩形边框40的水平中心线对称。
所述数个第一条状像素电极分支41中的一部分沿矩形边框40的竖直中心线与对应数量的第二条状像素电极分支42垂直相交，剩余的第一条状像素电极分支41沿矩形边框40的水平中心线与对应数量的第四条状像素电极分支44垂直相交；数个第二条状像素电极分支42中的一部分沿矩形边框40的竖直中心线与对应数量的第一条状像素电极分支41垂直相交，剩余的第二条状像素电极分支42沿矩形边框40的水平中心线与对应数量的第三条状像素电极分支43垂直相交；数个第三条状像素电极分支43中的一部分沿矩形边框40的竖直中心线与对应数量的第四条状像素电极分支44垂直相交，剩余的第三条状像素电极分支43沿矩形边框40的水平中心线与对应数量的第二条状像素电极分支42垂直相交；数个第四条状像素电极分支44中的一部分沿矩形边框40的竖直中心线与对应数量的第三条状像素电极分支43垂直相交，剩余的第四条状像素电极分支44沿矩形边框40的水平中心线与对应数量的第一条状像素电极分支41垂直相交。
所述像素电极4可如图9所示，在所述矩形边框40的中心点，一第一条状像素电极分支41、一第二条状像素电极分支42、一第三条状像素电极分支43、与一第四条状像素电极分支44四者相互垂直连接。
所述像素电极4也可如图10所示，在所述矩形边框40中心点设置一中心块45，最靠近所述矩形边框40中心点的相互垂直连接的第一、第二条状像素电极分支41、42、最靠近所述矩形边框40中心点的相互垂直连接的第二、第三条状像素电极分支42、43、最靠近所述矩形边框40中心点的相 互垂直连接的第三、第四条状像素电极分支43、44、及最靠近所述矩形边框40中心点的相互垂直连接的第四、第一条状像素电极分支44、41分别与所述中心块45相连接。优选的，所述中心块45的形状为矩形。
值得一提的是，所述栅极线21、数据线22与所述像素电极4的矩形边40至少部分重叠，能够充分利用有效显示区域的面积。
本发明的液晶显示面板中，像素电极4的数个第一、第二、第三、与第四条状像素电极分支41、42、43、44分别对应于一个子像素的四个区域。对该液晶显示面板施加电压时，由于像素电极4不含“十字形”龙骨结构，不存在“十字形”龙骨对应区域上的液晶分子倒向相对于水平方向倾斜0°或90°方向使得穿透率下降的的问题，一个子像素的四个区域中的液晶分子分别倒向相对于水平方向倾斜45°、135°、-135°、-45°方向，任一区域中均有sin22ΔΦ＝1，从而使得液晶效率最大化，穿透率提高，对背光亮度的需求较低，使用功耗较低。
综上所述，本发明的像素电极，采用不含“十字形”龙骨的结构，能够解决现有技术中由像素电极的“十字形”龙骨部分导致的液晶显示面板穿透率降低的问题，提高液晶显示面板的穿透率，降低液晶显示面板对背光亮度的需求，降低使用功耗。本发明的液晶显示面板，其像素电极采用不含“十字形”龙骨的结构，穿透率较高，对背光亮度的需求较低，使用功耗较低。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (12)

  1. 一种像素电极，包括：矩形边框、于所述矩形边框内部连接该矩形边框的数个相互平行且相互间隔的第一条状像素电极分支、数个相互平行且相互间隔的第二条状像素电极分支、数个相互平行且相互间隔的第三条状像素电极分支、及数个相互平行且相互间隔的第四条状像素电极分支；
    数个第一、第二、第三、与第四条状像素电极分支分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支、以及数个第三与第四条状像素电极分支相对于矩形边框的竖直中心线对称，所述数个第一与第四条状像素电极分支、以及数个第二与第三条状像素电极分支相对于矩形边框的水平中心线对称；
    数个第一条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第二条状像素电极分支垂直相交，剩余的第一条状像素电极分支沿矩形边框的水平中心线与对应数量的第四条状像素电极分支垂直相交；
    数个第二条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第一条状像素电极分支垂直相交，剩余的第二条状像素电极分支沿矩形边框的水平中心线与对应数量的第三条状像素电极分支垂直相交；
    数个第三条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第四条状像素电极分支垂直相交，剩余的第三条状像素电极分支沿矩形边框的水平中心线与对应数量的第二条状像素电极分支垂直相交；
    数个第四条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第三条状像素电极分支垂直相交，剩余的第四条状像素电极分支沿矩形边框的水平中心线与对应数量的第一条状像素电极分支垂直相交。
  2. 如权利要求1所述的像素电极，其中，在所述矩形边框的中心点，一第一条状像素电极分支、一第二条状像素电极分支、一第三条状像素电极分支、与一第四条状像素电极分支四者相互垂直连接。
  3. 如权利要求1所述的像素电极，还包括设于所述矩形边框中心点的一中心块，最靠近所述矩形边框中心点的相互垂直连接的第一、第二条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第二、第三条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第三、第四条状像素电极分支、及最靠近所述矩形边框中心点的相互垂直连接的第四、第一条状像素电极分支分别与所述中心块相连接。
  4. 如权利要求3所述的像素电极，其中，所述中心块呈矩形。
  5. 如权利要求1所述的像素电极，其中，所述像素电极的材料为ITO。
  6. 一种液晶显示面板，包括：上基板、与所述上基板相对设置的下基板、设置于所述上基板面向所述下基板一侧的公共电极、设于所述下基板面向所述上基板一侧的像素电极、及夹设于所述公共电极与像素电极之间的液晶层；
    所述下基板具有沿水平方向延伸的栅极线、沿竖直方向延伸的数据线、及TFT，所述TFT的栅极连接栅极线、源极连接数据线、漏极连接所述像素电极；
    所述像素电极包括：矩形边框、于所述矩形边框内部连接该矩形边框的数个相互平行且相互间隔的第一条状像素电极分支、数个相互平行且相互间隔的第二条状像素电极分支、数个相互平行且相互间隔的第三条状像素电极分支、及数个相互平行且相互间隔的第四条状像素电极分支；
    数个第一、第二、第三、与第四条状像素电极分支分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支、以及数个第三与第四条状像素电极分支相对于矩形边框的竖直中心线对称，所述数个第一与第四条状像素电极分支、以及数个第二与第三条状像素电极分支相对于矩形边框的水平中心线对称；
    数个第一条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第二条状像素电极分支垂直相交，剩余的第一条状像素电极分支沿矩形边框的水平中心线与对应数量的第四条状像素电极分支垂直相交；
    数个第二条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第一条状像素电极分支垂直相交，剩余的第二条状像素电极分支沿矩形边框的水平中心线与对应数量的第三条状像素电极分支垂直相交；
    数个第三条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第四条状像素电极分支垂直相交，剩余的第三条状像素电极分支沿矩形边框的水平中心线与对应数量的第二条状像素电极分支垂直相交；
    数个第四条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第三条状像素电极分支垂直相交，剩余的第四条状像素电极分支沿矩形边框的水平中心线与对应数量的第一条状像素电极分支垂直相交。
  7. 如权利要求6所述的液晶显示面板，其中，在所述矩形边框的中心点，一第一条状像素电极分支、一第二条状像素电极分支、一第三条状像素电极分支、与一第四条状像素电极分支四者相互垂直连接。
  8. 如权利要求6所述的液晶显示面板，其中，所述像素电极还包括设于所述矩形边框中心点的一中心块，最靠近所述矩形边框中心点的相互垂 直连接的第一、第二条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第二、第三条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第三、第四条状像素电极分支、及最靠近所述矩形边框中心点的相互垂直连接的第四、第一条状像素电极分支分别与所述中心块相连接。
  9. 如权利要求8所述的液晶显示面板，其中，所述中心块呈矩形。
  10. 如权利要求6所述的液晶显示面板，其中，所述栅极线、数据线与所述像素电极的矩形边框至少部分重叠。
  11. 一种液晶显示面板，包括：上基板、与所述上基板相对设置的下基板、设置于所述上基板面向所述下基板一侧的公共电极、设于所述下基板面向所述上基板一侧的像素电极、及夹设于所述公共电极与像素电极之间的液晶层；
    所述下基板具有沿水平方向延伸的栅极线、沿竖直方向延伸的数据线、及TFT，所述TFT的栅极连接栅极线、源极连接数据线、漏极连接所述像素电极；
    所述像素电极包括：矩形边框、于所述矩形边框内部连接该矩形边框的数个相互平行且相互间隔的第一条状像素电极分支、数个相互平行且相互间隔的第二条状像素电极分支、数个相互平行且相互间隔的第三条状像素电极分支、及数个相互平行且相互间隔的第四条状像素电极分支；
    数个第一、第二、第三、与第四条状像素电极分支分别相对于水平方向倾斜45°、135°、-135°、与-45°；所述数个第一与第二条状像素电极分支、以及数个第三与第四条状像素电极分支相对于矩形边框的竖直中心线对称，所述数个第一与第四条状像素电极分支、以及数个第二与第三条状像素电极分支相对于矩形边框的水平中心线对称；
    数个第一条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第二条状像素电极分支垂直相交，剩余的第一条状像素电极分支沿矩形边框的水平中心线与对应数量的第四条状像素电极分支垂直相交；
    数个第二条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第一条状像素电极分支垂直相交，剩余的第二条状像素电极分支沿矩形边框的水平中心线与对应数量的第三条状像素电极分支垂直相交；
    数个第三条状像素电极分支中的一部分沿矩形边框的竖直中心线与对应数量的第四条状像素电极分支垂直相交，剩余的第三条状像素电极分支沿矩形边框的水平中心线与对应数量的第二条状像素电极分支垂直相交；
    数个第四条状像素电极分支中的一部分沿矩形边框的竖直中心线与对 应数量的第三条状像素电极分支垂直相交，剩余的第四条状像素电极分支沿矩形边框的水平中心线与对应数量的第一条状像素电极分支垂直相交；
    其中，在所述矩形边框的中心点，一第一条状像素电极分支、一第二条状像素电极分支、一第三条状像素电极分支、与一第四条状像素电极分支四者相互垂直连接；
    其中，所述像素电极还包括设于所述矩形边框中心点的一中心块，最靠近所述矩形边框中心点的相互垂直连接的第一、第二条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第二、第三条状像素电极分支、最靠近所述矩形边框中心点的相互垂直连接的第三、第四条状像素电极分支、及最靠近所述矩形边框中心点的相互垂直连接的第四、第一条状像素电极分支分别与所述中心块相连接；
    其中，所述栅极线、数据线与所述像素电极的矩形边框至少部分重叠。
  12. 如权利要求11所述的液晶显示面板，其中，所述中心块呈矩形。
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