WO2016206156A1 - 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
WO2016206156A1
WO2016206156A1 PCT/CN2015/085092 CN2015085092W WO2016206156A1 WO 2016206156 A1 WO2016206156 A1 WO 2016206156A1 CN 2015085092 W CN2015085092 W CN 2015085092W WO 2016206156 A1 WO2016206156 A1 WO 2016206156A1
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Prior art keywords
electrode
bezel
frame
branch electrodes
electrodes
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PCT/CN2015/085092
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English (en)
French (fr)
Inventor
钟新辉
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深圳市华星光电技术有限公司
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Priority to US14/779,331 priority Critical patent/US20170192310A1/en
Publication of WO2016206156A1 publication Critical patent/WO2016206156A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • G02F1/134336—Matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—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
    • 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 plane conversion
  • 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.
  • the agent generally contains a large amount of chemical solvent NMP (N-methylpyrrolidone) and a polymer material (Polyimide, PI) and other components, and then the substrate is baked at a high temperature (generally 200 degrees Celsius or more) for a long time, so that The solvent in the alignment agent is baked to form a PI alignment layer on the surface of the substrate.
  • a conventional VA type liquid crystal display panel includes an upper substrate 100, a lower substrate 200 disposed opposite the upper substrate 100, and a liquid crystal layer 400 sandwiched between the upper substrate 100 and the lower substrate 200, and is formed on the upper substrate.
  • the surface of the lower substrate 200 faces the PI alignment layer 300 facing the surface of the upper substrate 100. 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 520 into a "m-shaped" pattern, and the common electrode 510 has a uniform thickness.
  • Continuous uninterrupted planar electrode Due to the special ITO pixel electrode pattern, the resulting oblique electric field can induce liquid crystal molecules 400 in different regions to reverse in different directions.
  • FIG. 2 is a top plan view showing a side of the lower substrate 200 of an MVA type liquid crystal display panel, wherein 610 and 620 are scan lines and data lines, respectively, and one sub-pixel is divided into four areas by the pixel electrode 520.
  • the ITO pixel electrode 520 includes a "cross-shaped" keel 511 as a trunk portion, and extends from the "cross-shaped" keel 511 toward the 45°, 135°, -45°, and -135° directions with respect to the horizontal direction.
  • 3 is a cross-sectional view of the MVA type liquid crystal display panel corresponding to AA in FIG.
  • the PI alignment layer 300 covers the pixel electrode 520 and the common electrode 510.
  • 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 ITO pixel electrode 520 has pixel electrode branches extending in the directions of 45°, 135°, ⁇ 45°, and ⁇ 135° with respect to the horizontal direction, respectively, in the four regions of the sub-pixel.
  • 512 and slit spacing pattern upper and lower polarizer directions are 0°, 90°, respectively
  • the long axis of liquid crystal molecules will be inclined by 45°, 135°, -45°, and -135°, respectively, with respect to the horizontal direction.
  • the liquid crystal molecules 400 on the region corresponding to the "cross" keel 511 of the pixel electrode 520 as shown in FIG. 2 tend not to be horizontally opposite to the liquid crystal molecules on the region corresponding to the pattern of the slit electrode 512.
  • the object of the present invention is to provide a pixel electrode, which can solve the problem of low transmittance due to improper lodging of liquid crystal molecules in the main portion of the rice-shaped pixel electrode, improve the transmittance of the liquid crystal panel, and reduce the brightness of the liquid crystal panel. Demand, reduce costs and use power consumption.
  • Another object of the present invention is to provide a liquid crystal display panel.
  • the pixel electrode includes two regions in one sub-pixel, and adopts a design without a keel or only one keel, and has a high transmittance and a low demand for backlight brightness. Use low power consumption.
  • the present invention provides a pixel electrode including a frame, a plurality of first branch electrodes that are parallel to each other and spaced apart from each other, and a plurality of second branch electrodes that are parallel to each other and spaced apart from each other;
  • the frame includes a plurality of frame electrodes connected to each other, and the plurality of first branch electrodes and the plurality of second branch electrodes respectively form an angle of 45° with the plurality of frame electrodes, and the plurality of first branch electrodes and The plurality of second branch electrodes are perpendicular to each other.
  • the frame includes a first frame electrode and a third frame electrode parallel to each other, and a second frame electrode vertically connected to the first frame electrode and the third frame electrode end; the first frame electrode and the third frame
  • the lengths of the electrodes are equal, and the length of the second bezel electrode is greater than the length of the first bezel electrode and the third bezel electrode;
  • the plurality of first branch electrodes and the plurality of second branch electrodes are located in a region surrounded by the first, second, and third bezel electrodes; the plurality of first branch electrodes and the plurality of second The branch electrodes are symmetrical with respect to a vertical bisector of the first and third bezel electrodes.
  • the frame includes a first frame electrode and a third frame electrode parallel to each other, and a second frame electrode vertically connected to the first frame electrode and the third frame electrode end; the first frame electrode and the third frame
  • the lengths of the electrodes are equal, and the length of the second bezel electrode is smaller than the length of the first bezel electrode and the third bezel electrode;
  • the plurality of first branch electrodes and the plurality of second branch electrodes are located in a region surrounded by the first, second, and third bezel electrodes; the plurality of first branch electrodes and the plurality of second The branch electrodes are symmetrical with respect to a vertical bisector of the first and third bezel electrodes.
  • the frame includes a first frame electrode and a second frame electrode vertically connected to a midpoint of the first frame electrode; the length of the second frame electrode is smaller than the length of the first frame electrode;
  • the plurality of first branch electrodes and the plurality of second branch electrodes are respectively located in two regions separated by the second bezel electrode on one side of the first bezel electrode; the plurality of first branch electrodes and The plurality of second branch electrodes are symmetrical with respect to the second bezel electrode.
  • first and second electrode slits Forming a plurality of first and second electrode slits between the plurality of first and second branch electrodes;
  • the first and second electrode slits have the same width;
  • the first and second branch electrodes have the same width.
  • the material of the pixel electrode is ITO.
  • the present invention also provides a pixel electrode including a frame, a plurality of first branch electrodes that are parallel to each other and spaced apart from each other, and a plurality of second branch electrodes that are parallel to each other and spaced apart from each other;
  • the frame includes a plurality of frame electrodes connected to each other, and the plurality of first branch electrodes and the plurality of second branch electrodes respectively form an angle of 45° with the plurality of frame electrodes, and the plurality of first branch electrodes and a plurality of second branch electrodes are perpendicular to each other;
  • the frame includes a first frame electrode and a third frame electrode that are parallel to each other, and a second frame electrode that is perpendicularly connected to the first frame electrode and the third frame electrode end; the first frame electrode and the first frame electrode The lengths of the three bezel electrodes are equal, and the length of the second bezel electrode is greater than the lengths of the first bezel electrode and the third bezel electrode;
  • the plurality of first branch electrodes and the plurality of second branch electrodes are located in a region surrounded by the first, second, and third bezel electrodes; the plurality of first branch electrodes and the plurality of second The branch electrodes are symmetric with respect to a vertical bisector of the first and third bezel electrodes;
  • first and second electrode slits are respectively formed between the plurality of first and second branch electrodes; the first and second electrode slits have the same width; and the first and second branch electrodes are The same width;
  • 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 scan 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 scan line, a source is connected to the data line, and a drain is connected to the pixel electrode;
  • the pixel electrode includes a frame, a plurality of first branch electrodes that are parallel to each other and spaced apart from each other, and a plurality of second branch electrodes that are parallel to each other and spaced apart from each other;
  • the frame includes a plurality of frame electrodes connected to each other, and the plurality of first branch electrodes and the plurality of second branch electrodes respectively form an angle of 45° with the plurality of frame electrodes, and the plurality of first branch electrodes and The plurality of second branch electrodes are perpendicular to each other.
  • the frame includes a first frame electrode and a third frame electrode parallel to each other, and a second frame electrode vertically connected to the first frame electrode and the third frame electrode end; the first frame electrode and the third frame The lengths of the electrodes are equal, and the length of the second bezel electrode is greater than the first The length of the bezel electrode and the third bezel electrode;
  • the plurality of first branch electrodes and the plurality of second branch electrodes are located in a region surrounded by the first, second, and third bezel electrodes; the plurality of first branch electrodes and the plurality of second The branch electrodes are symmetrical with respect to a vertical bisector of the first and third bezel electrodes.
  • the frame includes a first frame electrode and a third frame electrode parallel to each other, and a second frame electrode vertically connected to the first frame electrode and the third frame electrode end; the first frame electrode and the third frame
  • the lengths of the electrodes are equal, and the length of the second bezel electrode is smaller than the length of the first bezel electrode and the third bezel electrode;
  • the plurality of first branch electrodes and the plurality of second branch electrodes are located in a region surrounded by the first, second, and third bezel electrodes; the plurality of first branch electrodes and the plurality of second The branch electrodes are symmetrical with respect to a vertical bisector of the first and third bezel electrodes.
  • the frame includes a first frame electrode and a second frame electrode vertically connected to a midpoint of the first frame electrode; the length of the second frame electrode is smaller than the length of the first frame electrode;
  • the plurality of first branch electrodes and the plurality of second branch electrodes are respectively located in two regions separated by the second bezel electrode on one side of the first bezel electrode; the plurality of first branch electrodes and The plurality of second branch electrodes are symmetrical with respect to the second bezel electrode.
  • the invention has the beneficial effects that the pixel electrode of the invention comprises two regions in one sub-pixel, and adopts a design without a keel or only one keel, which increases the effective display area and solves the "cross shape" due to the rice-shaped pixel electrode.
  • the problem that the transmittance of the liquid crystal molecules in the keel structure is low due to the improper lodging direction improves the transmittance of the liquid crystal panel, reduces the requirement of the backlight brightness of the liquid crystal panel, and reduces the cost and power consumption.
  • the pixel electrode includes two regions in one sub-pixel, and adopts a design without a keel or only one 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;
  • FIG. 4 is a schematic view showing the reverse direction of liquid crystal molecules in the MVA liquid crystal display panel of FIG. 2;
  • FIG. 5 is a top plan view of a first embodiment of a pixel electrode of the present invention.
  • FIG. 6 is a top plan view of a second embodiment of a pixel electrode of the present invention.
  • FIG. 7 is a top plan view showing a third 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 first side of a lower substrate side of a liquid crystal display panel of the present invention.
  • FIG. 10 is a top plan view showing a second plane of a lower substrate side of a liquid crystal display panel of the present invention.
  • FIG. 11 is a top plan view showing a third plane of a lower substrate side of a liquid crystal display panel of the present invention.
  • the present invention first provides a pixel electrode including a frame 1 , a plurality of first branch electrodes 21 that are parallel to each other and spaced apart from each other, and a plurality of second branch electrodes 22 that are parallel to each other and spaced apart from each other.
  • the frame 1 includes a plurality of frame electrodes connected to each other, and the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 respectively form an angle of 45° with the plurality of frame electrodes, and the plurality of first The branch electrode 21 and the plurality of second branch electrodes 22 are perpendicular to each other.
  • FIG. 5 shows a first embodiment of a pixel electrode according to the present invention.
  • the bezel 1 includes a first bezel electrode 11 and a third bezel electrode 13 that are parallel to each other, and is vertically connected to the first bezel electrode 11 and the third.
  • a second frame electrode 12 at the end of the frame electrode 13; the length of the first frame electrode 11 and the third frame electrode 13 are equal, and the length of the second frame electrode 12 is greater than the first frame electrode 11 and the third frame The length of the electrode 13.
  • the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 are located in a region surrounded by the first, second, and third bezel electrodes 11 , 12 , 13 ; the plurality of first branch electrodes 21 is symmetric with respect to the vertical bisector of the first and third bezel electrodes 11, 13 with the plurality of second branch electrodes 22.
  • the first, second, and third bezel electrodes 11, 12, and 13 have the same width as the first and second branch electrodes 21, 22.
  • the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 respectively correspond to the left and right regions in one sub-pixel, and the effective display region is added due to the design without the keel.
  • the problem that the transmittance of the liquid crystal molecules at the "cross-shaped" keel structure of the rice-shaped pixel electrode is not low is solved, the transmittance of the liquid crystal panel is improved, and the backlight panel brightness demand is lowered. Reduced cost and power consumption.
  • FIG. 6 shows a second embodiment of a pixel electrode according to the present invention.
  • the frame 1 includes a first bezel electrode 11 and a third bezel electrode 13 that are parallel to each other, and is vertically connected to the first bezel electrode 11 and the third.
  • a second frame electrode 12 at the end of the frame electrode 13; the length of the first frame electrode 11 and the third frame electrode 13 are equal, and the length of the second frame electrode 12 is smaller than the first frame electrode 11 and the third frame The length of the electrode 13.
  • the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 are located in a region surrounded by the first, second, and third bezel electrodes 11 , 12 , 13 ; the plurality of first branch electrodes 21 is symmetric with respect to the vertical bisector of the first and third bezel electrodes 11, 13 with the plurality of second branch electrodes 22.
  • the first, second, and third bezel electrodes 11, 12, and 13 have the same width as the first and second branch electrodes 21, 22.
  • the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 respectively correspond to upper and lower two regions in one sub-pixel, and an effective display region is added due to the design without a keel.
  • the problem that the transmittance of the liquid crystal molecules at the "cross-shaped" keel structure of the rice-shaped pixel electrode is not low is solved, the transmittance of the liquid crystal panel is improved, and the backlight panel brightness demand is lowered. Reduced cost and power consumption.
  • FIG. 7 shows a third embodiment of the pixel electrode of the present invention
  • the frame 1 includes a first bezel electrode 11 and a second bezel electrode 12 vertically connected to a midpoint of the first bezel electrode 11;
  • the length of the two bezel electrodes 12 is smaller than the length of the first bezel electrode 11.
  • the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 are respectively located in two regions separated by the second bezel electrode 12 on the side of the first bezel electrode 11;
  • the branch electrode 21 and the plurality of second branch electrodes 22 are symmetrical with respect to the second bezel electrode 12.
  • the first and second bezel electrodes 11, 12 are the same width as the first and second branch electrodes 21, 22.
  • the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 respectively correspond to upper and lower two regions in one sub-pixel, and only one second frame electrode 12 is disposed, that is, only one strip is used.
  • the design of the keel increases the effective display area, and solves the problem that the transmittance of the liquid crystal molecules at the "cross-shaped" keel structure of the rice-shaped pixel electrode is low due to the improper lodging direction, thereby improving the transmittance of the liquid crystal panel and reducing the transmittance.
  • the demand for backlight brightness of the liquid crystal panel reduces cost and power consumption.
  • a plurality of first and second electrode slits 91 and 92 are respectively formed between the plurality of first and second branch electrodes 21 and 22;
  • the widths of the second electrode slits 91, 92 are the same; the widths of the first and second branch electrodes 21, 22 are the same.
  • the pixel electrode has two regions in one sub-pixel, and adopts a design without a keel or only one keel, which increases the effective display area and solves the lodging direction of the liquid crystal molecules at the "cross-shaped" keel structure of the rice-shaped pixel electrode.
  • the present invention also provides a liquid crystal display panel.
  • the liquid crystal display panel of the present invention includes: an upper substrate 10 , a lower substrate 20 disposed opposite to the upper substrate 10 , and a common electrode 51 disposed on a side of the upper substrate 10 facing the lower substrate 20 , The pixel electrode 52 on the side of the lower substrate 20 facing the upper substrate 10 and the liquid crystal layer 40 interposed between the common electrode 51 and the pixel electrode 52 are provided.
  • the lower substrate 20 has a scanning line 61 extending in a horizontal direction, a data line 62 extending in a vertical direction, and a TFT, and a gate of the TFT is connected to the scanning line 61, a source connection data line 62, and a drain connection.
  • the pixel electrode 52 is described.
  • FIG 8 also illustrates an alignment layer 30 covering the common electrode 51 and the pixel electrode 52 to align the liquid crystal layer 40.
  • an alignment layer 30 covering the common electrode 51 and the pixel electrode 52 to align the liquid crystal layer 40.
  • a polymer-stabilized vertical alignment polymer- The liquid crystal layer 40 is aligned in a manner of stabilized vertical alignment (PSVA).
  • the pixel electrode 52 includes a frame 1 , a plurality of first branch electrodes 21 that are parallel to each other and spaced apart from each other, and a plurality of second branch electrodes 22 that are parallel to each other and spaced apart from each other.
  • the frame 1 includes a plurality of frame electrodes connected to each other, and the plurality of first branch electrodes 21 and the plurality of second branch electrodes 22 respectively form an angle of 45° with the plurality of frame electrodes, and the plurality of first The branch electrode 21 and the plurality of second branch electrodes 22 are perpendicular to each other.
  • the pixel electrode 52 on the side of the lower substrate 20 may adopt any one of the first to third embodiments of the pixel electrode described above, and details are not described herein again.
  • the pixel electrode includes two regions in one sub-pixel, and adopts a design without a keel or only one keel, and has a high transmittance, a low demand for backlight brightness, and low power consumption.
  • the pixel electrode of the present invention includes two regions in one sub-pixel, and adopts a design without a keel or only one keel, which increases the effective display area and solves the "cross-shaped" keel due to the m-shaped pixel electrode.
  • the problem that the transmittance of the liquid crystal molecules in the structure is not caused by the improper lodging direction is low, the transmittance of the liquid crystal panel is improved, the demand for backlight brightness of the liquid crystal panel is lowered, and the cost and power consumption are reduced.
  • the liquid crystal display panel of the present invention comprises two regions in one sub-pixel, and adopts a design without a keel or only one keel, and has a high transmittance. There is a lower demand for backlight brightness and lower power consumption.

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Abstract

一种像素电极及液晶显示面板。像素电极包括边框(1)、数个相互平行且相互间隔的第一分支电极(21)、及数个相互平行且相互间隔的第二分支电极(22)；边框(1)包括相互连接的数个边框电极，数个第一分支电极(21)、数个第二分支电极(22)分别与数个边框电极呈45°夹角，数个第一分支电极(21)与数个第二分支电极(22)之间相互垂直，像素电极在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，增加了有效显示区域，提高了液晶面板的穿透率。

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)型或超扭曲向列(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100、与上基板100相对设置的下基板200、夹于上基板100和下基板200之间的液晶层400，形成于上基板100面向下基板200一侧表面及下基板200面向上基板100一侧表面的PI配向层300。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520处理成“米字型”图案，公共电极510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400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200一侧的平面俯视示意图，其中610与620分别为扫描线与数据线，一个子像素被像素电极520划分成了四个区域。所述ITO像素电极520包括作为主干部分的“十字形”龙骨511、及相对于水平方向自该“十字形”龙骨511分别向45°、135°、-45°、及-135°方向延伸的像素电极分支512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520设于平坦的下钝化层600上，平面型的公共电极510设于平坦的上钝化层601上，PI配向层300覆盖于像素电极520及公共电极510上。
根据VA型液晶显示面板的穿透率公式：
Figure PCTCN2015085092-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520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512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520的“十字形”龙骨511所对应区域上的液晶分子400往往不能像像素电极分支512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511对应区域上的液晶分子400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，可解决由于米字形像素电极的主干部分液晶分子倒伏方向不当造成的穿透率偏低的问题，提高液晶面板的穿透率，降低液晶面板对背光亮度的需求，降低成本与使用功耗。
本发明的目的还在于提供一种液晶显示面板，像素电极在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，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，本发明提供一种像素电极，包括边框、数个相互平行且相互间隔的第一分支电极、及数个相互平行且相互间隔的第二分支电极；
所述边框包括相互连接的数个边框电极，所述数个第一分支电极、数个第二分支电极分别与所述数个边框电极呈45°夹角，所述数个第一分支电极与数个第二分支电极之间相互垂直。
所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度大于所述第一边框电极与第三边框电极的长度；
所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度小于所述第一边框电极与第三边框电极的长度；
所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
所述边框包括第一边框电极、及垂直连接于所述第一边框电极中点的第二边框电极；所述第二边框电极的长度小于所述第一边框电极的长度；
所述数个第一分支电极、数个第二分支电极分别位于所述第一边框电极一侧由所述第二边框电极分隔成的两个区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第二边框电极对称。
所述数条第一、第二分支电极之间分别形成数个第一、第二电极缝隙； 所述第一、第二电极缝隙的宽度相同；所述第一、第二分支电极的宽度相同。
所述像素电极的材料为ITO。
本发明还提供一种像素电极，包括边框、数个相互平行且相互间隔的第一分支电极、及数个相互平行且相互间隔的第二分支电极；
所述边框包括相互连接的数个边框电极，所述数个第一分支电极、数个第二分支电极分别与所述数个边框电极呈45°夹角，所述数个第一分支电极与数个第二分支电极之间相互垂直；
其中，所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度大于所述第一边框电极与第三边框电极的长度；
所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称；
其中，所述数条第一、第二分支电极之间分别形成数个第一、第二电极缝隙；所述第一、第二电极缝隙的宽度相同；所述第一、第二分支电极的宽度相同；
其中，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扫描线、沿竖直方向延伸的数据线、及TFT，所述TFT的栅极连接扫描线、源极连接数据线、漏极连接所述像素电极；
所述像素电极包括边框、数个相互平行且相互间隔的第一分支电极、及数个相互平行且相互间隔的第二分支电极；
所述边框包括相互连接的数个边框电极，所述数个第一分支电极、数个第二分支电极分别与所述数个边框电极呈45°夹角，所述数个第一分支电极与数个第二分支电极之间相互垂直。
所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度大于所述第一 边框电极与第三边框电极的长度；
所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度小于所述第一边框电极与第三边框电极的长度；
所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
所述边框包括第一边框电极、及垂直连接于所述第一边框电极中点的第二边框电极；所述第二边框电极的长度小于所述第一边框电极的长度；
所述数个第一分支电极、数个第二分支电极分别位于所述第一边框电极一侧由所述第二边框电极分隔成的两个区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第二边框电极对称。
本发明的有益效果：本发明的像素电极，在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，增加了有效显示区域，解决了由于米字形像素电极“十字形”龙骨结构处的液晶分子倒伏方向不当造成的穿透率偏低的问题，提高了液晶面板的穿透率，降低了液晶面板对背光亮度的需求，降低了成本与使用功耗。本发明的液晶显示面板，像素电极在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，穿透率较高，对背光亮度的需求较低，使用功耗较低。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为一种现有的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2所述的MVA型液晶显示面板中的液晶分子倒向示意图；
图5为本发明的像素电极的第一实施例的俯视示意图；
图6为本发明的像素电极的第二实施例的俯视示意图；
图7为本发明的像素电极的第三实施例的俯视示意图；
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第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第二种平面俯视示意图；
图11为本发明液晶显示面板的下基板一侧的第三种平面俯视示意图。
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。
请参阅图5至图7，本发明首先提供一种像素电极，包括边框1、数个相互平行且相互间隔的第一分支电极21、及数个相互平行且相互间隔的第二分支电极22。
所述边框1包括相互连接的数个边框电极，所述数个第一分支电极21、数个第二分支电极22分别与所述数个边框电极呈45°夹角，所述数个第一分支电极21与数个第二分支电极22之间相互垂直。
图5所示为本发明的像素电极的第一实施例，所述边框1包括相互平行的第一边框电极11与第三边框电极13、及垂直连接于所述第一边框电极11与第三边框电极13端部的第二边框电极12；所述第一边框电极11与第三边框电极13的长度相等，所述第二边框电极12的长度大于所述第一边框电极11与第三边框电极13的长度。
所述数个第一分支电极21、数个第二分支电极22位于所述第一、第二、第三边框电极11、12、13所围成的区域内；所述数个第一分支电极21与所述数个第二分支电极22相对于所述第一、第三边框电极11、13的垂直平分线对称。
优选的，所述第一、第二、第三边框电极11、12、13与所述第一、第二分支电极21、22的宽度相同。
在该第一实施例中，所述数个第一分支电极21、数个第二分支电极22分别对应一个子像素中的左右两个区域，并且由于采用无龙骨的设计，增加了有效显示区域，解决了由于米字形像素电极“十字形”龙骨结构处的液晶分子倒伏方向不当造成的穿透率偏低的问题，提高了液晶面板的穿透率，降低了液晶面板对背光亮度的需求，降低了成本与使用功耗。
图6所示为本发明的像素电极的第二实施例，所述边框1包括相互平行的第一边框电极11与第三边框电极13、及垂直连接于所述第一边框电极11与第三边框电极13端部的第二边框电极12；所述第一边框电极11与第三边框电极13的长度相等，所述第二边框电极12的长度小于所述第一边框电极11与第三边框电极13的长度。
所述数个第一分支电极21、数个第二分支电极22位于所述第一、第二、第三边框电极11、12、13所围成的区域内；所述数个第一分支电极21与所述数个第二分支电极22相对于所述第一、第三边框电极11、13的垂直平分线对称。
优选的，所述第一、第二、第三边框电极11、12、13与所述第一、第二分支电极21、22的宽度相同。
在该第二实施例中，所述数个第一分支电极21、数个第二分支电极22分别对应一个子像素中的上下两个区域，并且由于采用无龙骨的设计，增加了有效显示区域，解决了由于米字形像素电极“十字形”龙骨结构处的液晶分子倒伏方向不当造成的穿透率偏低的问题，提高了液晶面板的穿透率，降低了液晶面板对背光亮度的需求，降低了成本与使用功耗。
图7所示为本发明的像素电极的第三实施例，所述边框1包括第一边框电极11、及垂直连接于所述第一边框电极11中点的第二边框电极12；所述第二边框电极12的长度小于所述第一边框电极11的长度。
所述数个第一分支电极21、数个第二分支电极22分别位于所述第一边框电极11一侧由所述第二边框电极12分隔成的两个区域内；所述数个第一分支电极21与所述数个第二分支电极22相对于所述第二边框电极12对称。
优选的，所述第一、第二边框电极11、12与所述第一、第二分支电极21、22的宽度相同。
在该第三实施例中，所述数个第一分支电极21、数个第二分支电极22分别对应一个子像素中的上下两个区域，并且只设置了第二边框电极12即采用只有一条龙骨的设计，增加了有效显示区域，解决了由于米字形像素电极“十字形”龙骨结构处的液晶分子倒伏方向不当造成的穿透率偏低的问题，提高了液晶面板的穿透率，降低了液晶面板对背光亮度的需求，降低了成本与使用功耗。
具体的，在上述第一至第三实施例中，所述数条第一、第二分支电极21、22之间分别形成数个第一、第二电极缝隙91、92；所述第一、第二电极缝隙91、92的宽度相同；所述第一、第二分支电极21、22的宽度相同。
上述像素电极，在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，增加了有效显示区域，解决了由于米字形像素电极“十字形”龙骨结构处的液晶分子倒伏方向不当造成的穿透率偏低的问题，提高了液晶面板的穿透率，降低了液晶面板对背光亮度的需求，降低了成本与使用功耗。
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10、与所述上基板10相对设置的下基板20、设置于所述上基板10面向所述下基板20一侧的公共电极51、设于所述下基板20面向所述上基板10一侧的像素电极52、及夹设于所述公共电极51与像素电极52之间的液晶层40。
所述下基板20具有沿水平方向延伸的扫描线61、沿竖直方向延伸的数据线62、及TFT，所述TFT的栅极连接扫描线61、源极连接数据线62、漏极连接所述像素电极52。
图8还示意出了覆盖所述公共电极51与像素电极52的配向层30，以对液晶层40进行配向，当然，也可以不设置配向层30，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40进行配向。
具体的，请参阅图5至图7，所述像素电极52包括边框1、数个相互平行且相互间隔的第一分支电极21、及数个相互平行且相互间隔的第二分支电极22。
所述边框1包括相互连接的数个边框电极，所述数个第一分支电极21、数个第二分支电极22分别与所述数个边框电极呈45°夹角，所述数个第一分支电极21与数个第二分支电极22之间相互垂直。
请参阅图9至图11，下基板20一侧的像素电极52可以采用上述像素电极的第一至第三实施例的任意一种结构，此处不再赘述。
上述液晶显示面板，像素电极在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，穿透率较高，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，在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，增加了有效显示区域，解决了由于米字形像素电极“十字形”龙骨结构处的液晶分子倒伏方向不当造成的穿透率偏低的问题，提高了液晶面板的穿透率，降低了液晶面板对背光亮度的需求，降低了成本与使用功耗。本发明的液晶显示面板，在一个子像素中包含两个区域，并且采用无龙骨或只有一条龙骨的设计，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后附的权利要求的保护范围。

Claims (11)

  1. 一种像素电极，包括边框、数个相互平行且相互间隔的第一分支电极、及数个相互平行且相互间隔的第二分支电极；
    所述边框包括相互连接的数个边框电极，所述数个第一分支电极、数个第二分支电极分别与所述数个边框电极呈45°夹角，所述数个第一分支电极与数个第二分支电极之间相互垂直。
  2. 如权利要求1所述的像素电极，其中，所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度大于所述第一边框电极与第三边框电极的长度；
    所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
  3. 如权利要求1所述的像素电极，其中，所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度小于所述第一边框电极与第三边框电极的长度；
    所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
  4. 如权利要求1所述的像素电极，其中，所述边框包括第一边框电极、及垂直连接于所述第一边框电极中点的第二边框电极；所述第二边框电极的长度小于所述第一边框电极的长度；
    所述数个第一分支电极、数个第二分支电极分别位于所述第一边框电极一侧由所述第二边框电极分隔成的两个区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第二边框电极对称。
  5. 如权利要求1所述的像素电极，其中，所述数条第一、第二分支电极之间分别形成数个第一、第二电极缝隙；所述第一、第二电极缝隙的宽度相同；所述第一、第二分支电极的宽度相同。
  6. 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。
  7. 一种像素电极，包括边框、数个相互平行且相互间隔的第一分支电极、及数个相互平行且相互间隔的第二分支电极；
    所述边框包括相互连接的数个边框电极，所述数个第一分支电极、数个第二分支电极分别与所述数个边框电极呈45°夹角，所述数个第一分支电极与数个第二分支电极之间相互垂直；
    其中，所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度大于所述第一边框电极与第三边框电极的长度；
    所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称；
    其中，所述数条第一、第二分支电极之间分别形成数个第一、第二电极缝隙；所述第一、第二电极缝隙的宽度相同；所述第一、第二分支电极的宽度相同；
    其中，所述像素电极的材料为ITO。
  8. 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扫描线、沿竖直方向延伸的数据线、及TFT，所述TFT的栅极连接扫描线、源极连接数据线、漏极连接所述像素电极；
    所述像素电极包括边框、数个相互平行且相互间隔的第一分支电极、及数个相互平行且相互间隔的第二分支电极；
    所述边框包括相互连接的数个边框电极，所述数个第一分支电极、数个第二分支电极分别与所述数个边框电极呈45°夹角，所述数个第一分支电极与数个第二分支电极之间相互垂直。
  9. 如权利要求8所述的液晶显示面板，其中，所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度大于所述第一边框电极与第三边框电极的长度；
    所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
  10. 如权利要求8所述的液晶显示面板，其中，所述边框包括相互平行的第一边框电极与第三边框电极、及垂直连接于所述第一边框电极与第三边框电极端部的第二边框电极；所述第一边框电极与第三边框电极的长度相等，所述第二边框电极的长度小于所述第一边框电极与第三边框电极的长度；
    所述数个第一分支电极、数个第二分支电极位于所述第一、第二、第三边框电极所围成的区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第一、第三边框电极的垂直平分线对称。
  11. 如权利要求8所述的液晶显示面板，其中，所述边框包括第一边框电极、及垂直连接于所述第一边框电极中点的第二边框电极；所述第二边框电极的长度小于所述第一边框电极的长度；
    所述数个第一分支电极、数个第二分支电极分别位于所述第一边框电极一侧由所述第二边框电极分隔成的两个区域内；所述数个第一分支电极与所述数个第二分支电极相对于所述第二边框电极对称。
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