WO2013174012A1 - 液晶显示面板及其应用的显示装置 - Google Patents

液晶显示面板及其应用的显示装置 Download PDF

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Publication number
WO2013174012A1
WO2013174012A1 PCT/CN2012/076079 CN2012076079W WO2013174012A1 WO 2013174012 A1 WO2013174012 A1 WO 2013174012A1 CN 2012076079 W CN2012076079 W CN 2012076079W WO 2013174012 A1 WO2013174012 A1 WO 2013174012A1
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Prior art keywords
liquid crystal
substrate
crystal display
display panel
degrees
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PCT/CN2012/076079
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English (en)
French (fr)
Inventor
康志聪
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深圳市华星光电技术有限公司
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Priority to US13/522,957 priority Critical patent/US9063369B2/en
Publication of WO2013174012A1 publication Critical patent/WO2013174012A1/zh
Priority to US14/723,464 priority patent/US9720276B2/en

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/01—Number of plates being 1
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/08—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates with a particular optical axis orientation

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a liquid crystal display panel and a display device thereof.
  • Liquid crystal display (Liquid Crystal Display, LCD) has been widely used in a variety of electronic products, most of the liquid crystal display is a backlight type liquid crystal display, which is composed of a liquid crystal display panel and a backlight module (backlight Module).
  • the liquid crystal display panel is composed of two transparent substrates and a liquid crystal sealed between the substrates.
  • VA Vertical Alignment
  • PSA Polymer Stabilized Vertical Alignment
  • PSVA Polymer Stabilized Vertical Alignment
  • the liquid crystal between the two transparent substrates can be doped with a reactive monomer (reactive Monomer) mixed with liquid crystal molecules, wherein the surface of each transparent substrate is coated with polyimide (PI) as an alignment substrate.
  • a reactive monomer reactive Monomer
  • PI polyimide
  • the reactive monomer can be phase separated from the liquid crystal molecules (phase The phenomenon of separation forms a polymer on the alignment substrate of the transparent substrate. Due to the interaction between the polymer and the liquid crystal molecules, the liquid crystal molecules are aligned along the direction of the polymer molecules, and therefore, the liquid crystal molecules between the transparent substrates may have a pretilt angle (pre-tile) Angle).
  • the current VA type liquid crystal display is easy to have color shift (Color Shift) problem, thus seriously affecting the display quality of the liquid crystal display.
  • the pixel structure of the liquid crystal display panel can be changed.
  • the change in the pixel structure may cause the transmittance of the liquid crystal display panel to decrease.
  • the invention provides a liquid crystal display panel and a display device thereof for solving the problem of color shift and transmittance reduction of a VA type liquid crystal display.
  • a main object of the present invention is to provide a liquid crystal display panel.
  • the liquid crystal display panel includes: a first substrate including a first electrode; a second substrate including a second electrode, wherein the second electrode has a pixel electrode structure,
  • the pixel electrode structure includes a trunk portion and a plurality of branch portions, wherein the trunk portion and the branch portion have a predetermined angle, and the predetermined angle is an angle between 5 degrees and 85 degrees and 45 degrees; a liquid crystal layer formed between the first substrate and the second substrate; a first polarizer disposed outside the first substrate; a second polarizer disposed outside the second substrate; And a one-wavelength retardation film attached to an outer surface of the first substrate or the second substrate.
  • Another object of the present invention is to provide a liquid crystal display panel comprising: a first substrate including a first electrode; a second substrate including a second electrode, wherein the second electrode has a pixel electrode structure,
  • the pixel electrode structure includes a trunk portion and a plurality of branch portions, the stem portion and the branch portion have a predetermined angle, the predetermined angle is less than or greater than 45 degrees, and a liquid crystal layer is formed in the first a substrate between the substrate and the second substrate; a first polarizer disposed outside the first substrate; a second polarizer disposed outside the second substrate; and a half-wave retardation film, Bonding to the outer surface of the first substrate or the second substrate.
  • the liquid crystal display panel includes: a first substrate including a first electrode; a second substrate including a second electrode, wherein the second electrode has a pixel electrode structure, the pixel electrode structure includes a trunk portion and a plurality of branch portions, a predetermined angle between the trunk portion and the branch portion, the predetermined angle is less than or greater than 45 degrees; a liquid crystal layer formed between the first substrate and the second substrate; the first polarized light a sheet disposed on an outer side of the first substrate; a second polarizer disposed outside the second substrate; and a half-wave retardation sheet attached to the first substrate or the second substrate On the outside surface.
  • the preset angle is between 5 degrees and 42.5 degrees.
  • the preset angle is between 47.5 degrees and 85 degrees.
  • the one-half wavelength phase difference plate is located between the first substrate and the first polarizer.
  • the predetermined angle ( ⁇ ) is less than 45 degrees, and a slow axis of the one-half wavelength phase difference plate has a clip between the absorption axis of the first polarizer and the absorption axis of the first polarizer.
  • An angle ( ⁇ 1), wherein the predetermined angle ( ⁇ ) and the included angle ( ⁇ 1) satisfy the following formula: ⁇ 1+ ⁇ 45°.
  • the predetermined angle ( ⁇ ) is greater than 45 degrees, and a slow axis of the one-half wavelength phase difference plate has a clip between the absorption axis of the first polarizer and the absorption axis of the first polarizer.
  • An angle ( ⁇ 3), wherein the predetermined angle ( ⁇ ) and the included angle ( ⁇ 3) satisfy the following formula: ⁇ 3+ ⁇ 135°.
  • the one-half wavelength phase difference plate is located between the second substrate and the second polarizer.
  • the predetermined angle ( ⁇ ) is less than 45 degrees, and a slow axis between the one-half wavelength phase difference plate and the absorption axis of the second polarizer has a clip.
  • An angle ( ⁇ 2), wherein the predetermined angle ( ⁇ ) and the included angle ( ⁇ 2) satisfy the following formula: ⁇ 2+ ⁇ 45°.
  • the liquid crystal display panel of the present invention and the display device therefor can improve the color shift problem of the VA liquid crystal display by designing the pixel electrode structure, and can adjust the tilting direction and polarization of the liquid crystal molecules by using the one-half wavelength retardation film.
  • FIG. 1 is a partial cross-sectional view showing a liquid crystal display panel in accordance with an embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view showing a PSVA type liquid crystal display panel in accordance with an embodiment of the present invention
  • FIG. 3 is a schematic view showing a structure of a pixel electrode of a liquid crystal display panel according to an embodiment of the present invention
  • Figure 4 shows a schematic view of various angles in accordance with an embodiment of the present invention
  • FIG. 5A is a partial cross-sectional view showing a liquid crystal display panel in accordance with an embodiment of the present invention.
  • Figure 5B shows a schematic view of various angles in accordance with an embodiment of the present invention.
  • Figure 6 shows a schematic view of polarized light rays in accordance with the present invention
  • FIG. 7 is a schematic view showing a pixel electrode structure of a liquid crystal display panel according to another embodiment of the present invention.
  • FIG. 8A is a partial cross-sectional view showing a liquid crystal display panel in accordance with another embodiment of the present invention.
  • Figure 8B shows a schematic view of various angles in accordance with another embodiment of the present invention.
  • FIG. 9A is a partial cross-sectional view showing a liquid crystal display panel in accordance with another embodiment of the present invention.
  • Figure 9B shows a schematic diagram of various angles in accordance with another embodiment of the present invention.
  • the display device of this embodiment may include a liquid crystal display panel 100 and a backlight module (not shown).
  • the liquid crystal display panel 100 is disposed relative to the backlight module, and the backlight module can be side-lit (side Lighting) backlight module or direct-lit light (Bottom A backlight module to provide backlighting to the liquid crystal display panel 100.
  • the liquid crystal display panel 100 can be a VA type liquid crystal display panel, and can be applied to a polymer stabilized vertical alignment (PSVA) type liquid crystal display panel or a pattern vertical alignment (Pattern). Vertical Alignment, PVA) LCD panel.
  • PSVA polymer stabilized vertical alignment
  • Pattern pattern vertical alignment
  • the liquid crystal display panel 100 may include a first substrate 110, a second substrate 120, a liquid crystal layer 130, a first polarizer 140, a second polarizer 150, and a half-wavelength ( ⁇ /2) phase difference.
  • Slice 160 The liquid crystal layer 130 is formed between the first substrate 110 and the second substrate 120, that is, the liquid crystal layer 130 is located inside the first substrate 110 and the second substrate 120.
  • the first polarizer 140 is disposed on the outer side of the first substrate 110
  • the second polarizer 150 is disposed on the outer side of the second substrate 120
  • the ⁇ /2 retardation film 160 is conformable to the first substrate 110 or the second substrate 120.
  • the outside surface On the outside surface.
  • the substrate material of the first substrate 110 and the second substrate 120 may be a glass substrate or a flexible plastic substrate, and the first substrate 110 may be, for example, a color filter (Color). a glass substrate of Filter, CF) or a substrate of other materials, and the second substrate 120 may be, for example, a Thin Film Transistor (TFT). A glass substrate of a matrix or a substrate of another material. It should be noted that in some embodiments, the color filter and the TFT matrix may also be disposed on the same substrate.
  • the liquid crystal display panel 100 is, for example, a PSVA type liquid crystal display panel.
  • the liquid crystal layer 130 may include a reactive monomer and liquid crystal molecules, and the reactive monomer is preferably a photosensitive monomer mixed in the liquid crystal molecules. .
  • the first polarizer 140 is a side on which the first substrate 110 is disposed, and is opposite to the liquid crystal layer 130 (that is, the light exiting side of the first substrate 110), and the second polarizer 150 is a side on which the second substrate 120 is disposed, and With respect to the liquid crystal layer 130 (that is, the light incident side of the second substrate 120).
  • the liquid crystal display panel 100 can be a PSVA type liquid crystal display panel
  • the first substrate 110 can include a first electrode 111, a first alignment layer 112, and a first polymer alignment layer 113.
  • An alignment layer 112 and a first polymer alignment layer 113 are sequentially formed on the first electrode 111.
  • the second substrate 120 may include a second electrode 121, a second alignment layer 122, and a second polymer alignment layer 123.
  • the second alignment layer 122 and the second polymer alignment layer 123 are sequentially formed on the second electrode 121.
  • the first electrode 111 and the second electrode 121 are preferably made of a light-transmitting conductive material such as ITO, IZO, AZO, GZO, TCO or ZnO, and the first electrode 111 and the second electrode 121 may apply a voltage to the liquid crystal layer 130. Liquid crystal molecules.
  • the first electrode 111 is, for example, a common electrode
  • the second electrode 121 is, for example, a pixel electrode.
  • the second electrode 121 may have a plurality of regions (not shown), and the voltage applied to each region may be the same or different.
  • the alignment layers 112, 122 and the polymer alignment layers 113, 123 may have an alignment direction for determining the alignment of the liquid crystal molecules of the liquid crystal layer 130, and the alignment layers 112, 122 and the polymer alignment layers 113, 123 may have a pretilt angle. This pretilt angle is less than 90 degrees, preferably less than 60 degrees.
  • the alignment layers 112 and 122 are formed on the substrates 110 and 120, and the polymer alignment layers 113 and 123 are polymerized by the reactive monomer 101 and formed on the alignment layers 112 and 122.
  • FIG. 3 shows a schematic diagram of a pixel area of a liquid crystal display panel in accordance with an embodiment of the present invention.
  • the second substrate 120 includes a plurality of signal lines (not shown), which are, for example, gate lines and data lines, and are vertically interlaced with each other, and are arranged in a matrix, thereby forming a plurality of pixel regions 101.
  • the second electrode 121 has a pixel electrode structure for forming a multi-display domain alignment (multi-domain) Alignment).
  • the second electrode 121 in each of the pixel regions 101 includes a trunk portion 124 and a plurality of strip-shaped branch portions 125.
  • the trunk portion 124 may have a cross-shaped pattern, and thus each pixel region 101 may be a trunk portion. 124 is divided into four sub-pixel regions 102. In each of the sub-pixel regions 102, the branch portions 125 are obliquely extended by the trunk portion 124 and arranged in parallel with each other.
  • the preset portion ⁇ is less than or greater than 45 degrees, that is, the preset angle ⁇ is not equal to 45 degrees ( ⁇ ⁇ 45°). Therefore, the preset angle ⁇ may be, for example, an angle of 5 degrees and 85 degrees and 45 degrees or more for improving the color shift problem of the VA type liquid crystal display.
  • the liquid crystal display panel when the angle between the tilting direction of the liquid crystal molecules and the absorption axis of the polarizer is 45 degrees, the liquid crystal display panel can have the maximum transmittance. Therefore, in the embodiment of the present invention, by adjusting the angle between the tilting direction of the liquid crystal molecules and the absorption axis of the polarizers 140, 150 and the slow axis of the one-half wavelength phase difference sheet and the polarizers 140, 150 The angle between the absorption axes ensures the transmittance of the liquid crystal display panel 100.
  • the preset angle ⁇ between the trunk portion 124 of the pixel electrode structure and the branch portion 125 may be less than 45 degrees ( ⁇ ⁇ 45°), for example, between 5 degrees and 42.5 degrees. Between, for example, between 10 degrees and 40 degrees.
  • the ⁇ /2 phase difference plate 160 may be attached to the outer surface of the first substrate 110 or the second substrate 120 for adjusting the polarization angle of the light.
  • FIG. 4 shows a schematic view of various angles in accordance with an embodiment of the present invention.
  • the ⁇ /2 phase difference plate 160 is attached to the outer surface of the first substrate 110, the ⁇ /2 phase difference plate 160 is located between the first substrate 110 and the first polarizer 140, and the first polarizer 140
  • the absorption axis is, for example, an absorption axis perpendicular to the second polarizer 150, that is, an angle between the first polarizer 140 and the absorption axis of the second polarizer 150 is 90 degrees, and the ⁇ /2 retardation plate 160 is slow.
  • the axis (C axis) and the absorption axis of the first polarizer 140 have an angle ⁇ 1, wherein the preset angle ⁇ ( ⁇ 45°) and the angle ⁇ 1 satisfy the following formula (1):
  • FIG. 5A is a partial cross-sectional view showing a liquid crystal display panel according to an embodiment of the present invention
  • FIG. 5B is a schematic view showing various angles according to an embodiment of the present invention.
  • the absorption axis is, for example, an absorption axis perpendicular to the second polarizer 150, that is, an angle between the first polarizer 140 and the absorption axis of the second polarizer 150 is 90 degrees, and the ⁇ /2 retardation plate 160 is slow.
  • the axis has an angle ⁇ 2 with the absorption axis of the second polarizer 150, wherein the preset angle ⁇ ( ⁇ 45°) and the angle ⁇ 2 satisfy the following formula (2)
  • FIG. 6 shows a schematic diagram of polarized light rays in accordance with the present invention.
  • the ⁇ /2 retardation film 160 may be used by the second polarizer.
  • the vertically polarized light emitted by 150 is converted into another linearly polarized light having an angle of 2 ⁇ between the polarization direction of the polarized light and the polarization direction of the vertically polarized light.
  • the other linearly polarized light can be converted into a horizontally linearly polarized light by the liquid crystal layer 130 (ie, the liquid crystal cell) so that the light can pass through the transmission axis of the first polarizer 140.
  • the liquid crystal layer 130 may be equivalent to a ⁇ /2 retardation film. Therefore, the polarization direction and angle of the light can be adjusted by the ⁇ /2 retardation film 160 to ensure the transmittance of the liquid crystal display panel 100.
  • FIG. 7 is a schematic diagram showing a pixel electrode structure of a liquid crystal display panel according to another embodiment of the present invention.
  • the predetermined angle ⁇ between the trunk portion 124 of the pixel electrode structure and the branch portion 225 may be greater than 45 degrees ( ⁇ >45°), for example between 47.5 degrees and 85 degrees, for example It is between 50 degrees and 80 degrees.
  • the ⁇ /2 phase difference plate 260 may be attached to the outer surface of the first substrate 110 or the second substrate 120 for adjusting the polarization angle of the light.
  • FIG. 8A is a partial cross-sectional view showing a liquid crystal display panel according to another embodiment of the present invention
  • FIG. 8B is a schematic view showing angles according to another embodiment of the present invention.
  • the absorption axis is, for example, an absorption axis perpendicular to the second polarizer 150, that is, an angle between the first polarizer 140 and the absorption axis of the second polarizer 150 is 90 degrees, and the ⁇ /2 retardation plate 260 is slow.
  • the axis (C axis) and the absorption axis of the first polarizer 140 have an angle ⁇ 3, wherein the preset angle ⁇ ( ⁇ >45°) and the angle ⁇ 3 satisfy the following formula (3):
  • FIG. 9A is a partial cross-sectional view showing a liquid crystal display panel according to another embodiment of the present invention
  • FIG. 9B is a schematic view showing angles according to another embodiment of the present invention.
  • the absorption axis is, for example, an absorption axis perpendicular to the second polarizer 150, that is, an angle between the first polarizer 140 and the absorption axis of the second polarizer 150 is 90 degrees, and the ⁇ /2 retardation plate 260 is slow.
  • the axis has an angle ⁇ 4 with the absorption axis of the second polarizer 150, wherein the preset angle ⁇ ( ⁇ >45°) and the angle ⁇ 4 satisfy the following formula (4):
  • the liquid crystal display panel can be, for example, a pattern vertical alignment (PVA) A liquid crystal display panel, in which case the liquid crystal display panel may not include a polymer alignment layer.
  • PVA pattern vertical alignment
  • the color shift problem of the VA liquid crystal display can be improved by the design of the pixel electrode structure, and the liquid crystal molecules can be adjusted by the ⁇ /2 retardation film.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Geometry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

一种液晶显示面板及其应用的显示装置。液晶显示面板（100）包括第一基板（110）、第二基板（120）、液晶层（130）、第一偏光片（140）、第二偏光片（150）及二分之一波长相位差片（160）。第二基板（120）包括第二电极（121），第二电极（121）包括主干部（124）及多个分支部（125），其之间的预设角度为介于5度与85度且为45度以外的角度。二分之一波长相位差片（160）是贴合于第一基板（110）或第二基板（120）的外侧表面上。本发明可改善液晶显示面板的色偏及穿透率下降问题。

Description

液晶显示面板及其应用的显示装置 技术领域
本发明涉及液晶显示技术领域，特别是涉及一种液晶显示面板及其应用的显示装置。
 背景技术
液晶显示器(Liquid Crystal Display，LCD)已被广泛应用于各种电子产品中，液晶显示器大部分为背光型液晶显示器，其是由液晶显示面板及背光模块(backlight module)所组成。液晶显示面板是由两片透明基板以及被封于基板之间的液晶所构成。
目前，已发展一种垂直配向(Vertical Alignment, VA)技术，用于液晶显示面板。例如，由聚合物稳定垂直配向(polymer－stabilized alignment，PSA)制程所制造而成的聚合物稳定垂直配向型(Polymer Stabilized Vertical Alignment, PSVA)液晶显示器，其可具有广视角、高开口率、高对比及制程简单等优点。
在PSVA液晶显示器中，两透明基板之间的液晶可被掺有反应型单体(reactive monomer)，其混合于液晶分子，其中，每一透明基板的表面涂布有聚酰亚胺(polyimide，PI)，其作为配向基材。接着，当施加电压及紫外光(UV)光照射于两透明基板时，反应型单体可与液晶分子发生相分离(phase separation)现象，而在透明基板的配向基材上形成聚合物。由于聚合物跟液晶分子之间的相互作用，液晶分子会沿着聚合分子的方向来排列，因此，透明基板之间的液晶分子可具有预倾角(pre-tile angle)。
然而，目前的VA型液晶显示器容易具有色偏(Color Shift)问题，因而严重地影响液晶显示器的显示质量。为改善上述色偏问题，可改变液晶显示面板的像素结构。然而像素结构的改变，可能会导致液晶显示面板的穿透率下降。
故，有必要提供一种液晶显示面板及其应用的显示装置，以解决现有技术所存在的问题。
 技术问题
本发明提供一种液晶显示面板及其应用的显示装置，以解决VA型液晶显示器的色偏及穿透率下降问题。
 技术解决方案
本发明的主要目的在于提供一种液晶显示面板，液晶显示面板包括：第一基板，包括第一电极；第二基板，包括第二电极，其中所述第二电极具有一像素电极结构，所述像素电极结构包括主干部及多个分支部，所述主干部与所述分支部之间具有一预设角度，所述预设角度为介于5度与85度且为45度以外的角度；液晶层，形成于所述第一基板与所述第二基板之间；第一偏光片，设置于所述第一基板的外侧；第二偏光片，设置于所述第二基板外侧；以及二分之一波长相位差片，贴合于所述第一基板或所述第二基板的外侧表面上。
本发明的另一目的在于提供一种液晶显示面板，液晶显示面板包括：第一基板，包括第一电极；第二基板，包括第二电极，其中所述第二电极具有一像素电极结构，所述像素电极结构包括主干部及多个分支部，所述主干部与所述分支部之间具有一预设角度，所述预设角度是小于或大于45度；液晶层，形成于所述第一基板与所述第二基板之间；第一偏光片，设置于所述第一基板的外侧；第二偏光片，设置于所述第二基板外侧；以及二分之一波长相位差片，贴合于所述第一基板或所述第二基板的外侧表面上。
本发明的又一目的在于提供一种显示装置，显示装置包括：背光模块；以及液晶显示面板。液晶显示面板包括：第一基板，包括第一电极；第二基板，包括第二电极，其中所述第二电极具有一像素电极结构，所述像素电极结构包括主干部及多个分支部，所述主干部与所述分支部之间具有一预设角度，所述预设角度是小于或大于45度；液晶层，形成于所述第一基板与所述第二基板之间；第一偏光片，设置于所述第一基板的外侧；第二偏光片，设置于所述第二基板外侧；以及二分之一波长相位差片，贴合于所述第一基板或所述第二基板的外侧表面上。
在本发明的一实施例中，所述预设角度是介于5度与42.5度之间。
在本发明的一实施例中，所述预设角度是介于47.5度与85度之间。
在本发明的一实施例中，所述二分之一波长相位差片是位于所述第一基板与所述第一偏光片之间。
在本发明的一实施例中，所述预设角度(θ)是小于45度，所述二分之一波长相位差片的慢轴与所述第一偏光片的吸收轴之间具有一夹角(Ψ1)，其中所述预设角度(θ)与所述夹角(Ψ1)是满足如下公式：Ψ1+θ=45°。
在本发明的一实施例中，所述预设角度(θ)是大于45度，所述二分之一波长相位差片的慢轴与所述第一偏光片的吸收轴之间具有一夹角(Ψ3)，其中所述预设角度(θ)与所述夹角(Ψ3)是满足如下公式：Ψ3+θ=135°。
在本发明的一实施例中，所述二分之一波长相位差片是位于所述第二基板与所述第二偏光片之间。
在本发明的一实施例中，所述预设角度(θ)是小于45度，所述二分之一波长相位差片的慢轴与所述第二偏光片的吸收轴之间具有一夹角(Ψ2)，其中所述预设角度(θ)与所述夹角(Ψ2)是满足如下公式：Ψ2+θ=45°。
在本发明的一实施例中，所述预设角度(θ)是大于45度，所述二分之一波长相位差片的慢轴与所述第二偏光片的吸收轴之间具有一夹角(Ψ4)，其中所述预设角度(θ)与所述夹角(Ψ4)是满足如下公式：θ－Ψ4 =45°。
 有益效果
本发明的液晶显示面板及其应用的显示装置可通过像素电极结构的设计来改善VA型液晶显示器的色偏问题，且可通过二分之一波长相位差片来调整液晶分子的倾倒方向与偏光片的吸收轴之间的夹角，以同时确保液晶显示面板的穿透率。
 附图说明
图1显示依照本发明的一实施例的液晶显示面板的局部剖面示意图；
图2显示依照本发明的一实施例的PSVA型液晶显示面板的局部剖面示意图；
图3显示依照本发明的一实施例的液晶显示面板的像素电极结构的示意图；
图4显示依照本发明的一实施例的各角度的示意图；
图5A显示依照本发明的一实施例的液晶显示面板的局部剖面示意图；
图5B显示依照本发明的一实施例的各角度的示意图；
图6显示依照本发明的偏振光线的示意图；
图7显示依照本发明的另一实施例的液晶显示面板的像素电极结构的示意图；
图8A显示依照本发明的另一实施例的液晶显示面板的局部剖面示意图；
图8B显示依照本发明的另一实施例的各角度的示意图；
图9A显示依照本发明的另一实施例的液晶显示面板的局部剖面示意图；以及
图9B显示依照本发明的另一实施例的各角度的示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
在图中，结构相似的单元是以相同标号表示。
请参照图1，其显示依照本发明的一实施例的液晶显示面板的局部剖面示意图。本实施例的显示装置可包括液晶显示面板100和背光模块(未绘示)。液晶显示面板100相对于背光模块来设置，此背光模块可为侧光式(side Lighting)背光模块或直下式入光(Bottom Lighting)背光模块，以提供背光至液晶显示面板100。液晶显示面板100可为VA型液晶显示面板，并可应用于聚合物稳定垂直配向(PSVA)型液晶显示面板、或是图案垂直配向(Pattern Vertical Alignment，PVA) 型液晶显示面板。
如图1所示，液晶显示面板100可包括第一基板110、第二基板120、液晶层130、第一偏光片140、第二偏光片150及二分之一波长(λ/2)相位差片160。液晶层130是形成于第一基板110及第二基板120之间，亦即液晶层130是位于第一基板110及第二基板120的内侧。第一偏光片140是设置于第一基板110的外侧，第二偏光片150是设置于第二基板120的外侧，λ/2相位差片160可贴合于第一基板110或第二基板120的外侧表面上。
如图1所示，第一基板110和第二基板120的基板材料可为玻璃基板或可挠性塑料基板，第一基板110可例如为具有彩色滤光片(Color Filter，CF)的玻璃基板或其它材质的基板，而第二基板120可例如为具有薄膜晶体管(Thin Film Transistor，TFT) 矩阵的玻璃基板或其它材质的基板。值得注意的是，在一些实施例中，彩色滤光片和TFT矩阵亦可配置在同一基板上。
请参照图2，其显示依照本发明的一实施例的PSVA型液晶显示面板的局部剖面示意图。在本实施例中，液晶显示面板100例如为PSVA型液晶显示面板，此时，液晶层130可包括反应型单体和液晶分子，反应型单体优选是光敏单体，其混合于液晶分子中。第一偏光片140是设置第一基板110的一侧，并相对于液晶层130(亦即为第一基板110的出光侧)，第二偏光片150是设置第二基板120的一侧，并相对于液晶层130(亦即为第二基板120的入光侧)。
如图2所示，在本实施例中，液晶显示面板100可为PSVA型液晶显示面板，第一基板110可包括第一电极111、第一配向层112、第一聚合物配向层113，第一配向层112及第一聚合物配向层113是依序形成于第一电极111上。第二基板120可包括第二电极121、第二配向层122、第二聚合物配向层123，第二配向层122及第二聚合物配向层123是依序形成于第二电极121上。第一电极111和第二电极121优选是以透光导电材料所制成，例如：ITO、IZO、AZO、GZO、TCO或ZnO，第一电极111和第二电极121可施加电压于液晶层130的液晶分子。在本实施例中，第一电极111例如为共同电极，第二电极121例如为像素电极。且第二电极121可具有多个区域(未绘示)，而每一区域所被施加的电压可为相同或不相同。配向层112、122及聚合物配向层113、123可具有一配向方向，用来决定液晶层130的液晶分子的配向，且配向层112、122及聚合物配向层113、123可具有一预倾角，此预倾角是小于90度，优选是小于60度。配向层112、122是形成于基板110、120上，聚合物配向层113、123是由反应型单体101所聚合而成，其形成于配向层112、122上。
请参照图3，其显示依照本发明的一实施例的液晶显示面板的像素区域的示意图。第二基板120包括多条信号线(未显示)，其例如为栅极线及数据线，且相互垂直交错，而呈矩阵式排列，因而形成多个像素区域101。在每一像素区域101中，第二电极121具有一像素电极结构，用于形成多显示域配向(multi－domain alignment)。在本实施例中，每一像素区域101内的第二电极121包括主干部124及多个条状的分支部125，主干部124可呈十字形图案，因而每一像素区域101可被主干部124分为四个子像素区域102。在每一子像素区域102中，分支部125是由主干部124来倾斜地延伸出，并相互平行排列。其中，主干部124与分支部125之间具有一预设角度θ，此预设角度θ是小于或大于45度，亦即预设角度θ不等于45度(θ≠45°) ，因此，预设角度θ例如可为介于5度与85度且为45度以外的角度，用于以改善VA型液晶显示器的色偏(Color Shift)问题。
依据光学原理，液晶分子的倾倒方向与偏光片的吸收轴之间的夹角为45度时，液晶显示面板可具有最大的穿透率。因此，在本发明的实施例中，通过调整液晶分子的倾倒方向与偏光片140、150的吸收轴之间的夹角及二分之一波长相位差片的慢轴与偏光片140、150的吸收轴之间的夹角，可确保液晶显示面板100的穿透率。
在一实施例中，如图3所示，像素电极结构的主干部124与分支部125之间的预设角度θ可小于45度(θ＜45°)，例如是介于5度与42.5度之间，又例如是介于10度与40度之间。此时，λ/2相位差片160可贴合于第一基板110或第二基板120的外侧表面上，用于调整光线的偏振角度。
请参照图2及4，图4显示依照本发明的一实施例的各角度的示意图。当λ/2相位差片160是贴合于第一基板110的外侧表面上时，λ/2相位差片160是位于第一基板110与第一偏光片140之间，第一偏光片140的吸收轴例如是垂直于第二偏光片150的吸收轴，亦即第一偏光片140与第二偏光片150的吸收轴之间的夹角为90度，且λ/2相位差片160的慢轴(C轴)与第一偏光片140的吸收轴之间具有一夹角Ψ1，其中预设角度θ(θ＜45°)与夹角Ψ1是满足如下公式(1)：
Ψ1+θ=45° (1)。
请参照图5A及5B，图5A显示依照本发明的一实施例的液晶显示面板的局部剖面示意图，图5B显示依照本发明的一实施例的各角度的示意图。当λ/2相位差片160是贴合于第二基板120的外侧表面上时，λ/2相位差片160是位于第二基板120与第二偏光片150之间，第一偏光片140的吸收轴例如是垂直于第二偏光片150的吸收轴，亦即第一偏光片140与第二偏光片150的吸收轴之间的夹角为90度，且λ/2相位差片160的慢轴与第二偏光片150的吸收轴之间具有夹角Ψ2，其中预设角度θ(θ＜45°)与夹角Ψ2是满足如下公式(2)
Ψ2+θ=45° (2)。
请参照图6，其显示依照本发明的偏振光线的示意图。以图5A所示的液晶显示面板100为例，当光线是由第二偏光片150至第一偏光片140来透过液晶显示面板100时，λ/2相位差片160可将由第二偏光片150所发出的垂直线偏振光转换为另一线偏振光，此另一线偏振光的偏振方向与垂直线偏振光的偏振方向之间具有2Ψ的夹角。接着，此另一线偏振光可通过液晶层130(亦即液晶盒)来转换为一水平线偏振光，使得光线可通过第一偏光片140的穿透轴。此时，液晶层130可等效于一λ/2相位差片。因此，通过λ/2相位差片160，可调整光线的偏振方向及角度，以确保液晶显示面板100的穿透率。
请参照图7，其显示依照本发明的另一实施例的液晶显示面板的像素电极结构的示意图。在另一实施例中，像素电极结构的主干部124与分支部225之间的预设角度θ可大于45度(θ＞45°)，例如是介于47.5度与85度之间，又例如是介于50度与80度之间。此时，λ/2相位差片260可贴合于第一基板110或第二基板120的外侧表面上，用于调整光线的偏振角度。
请参照图8A及8B，图8A显示依照本发明的另一实施例的液晶显示面板的局部剖面示意图，图8B显示依照本发明的另一实施例的各角度的示意图。当λ/2相位差片260是贴合于第一基板110的外侧表面上时，λ/2相位差片260是位于第一基板110与第一偏光片140之间，第一偏光片140的吸收轴例如是垂直于第二偏光片150的吸收轴，亦即第一偏光片140与第二偏光片150的吸收轴之间的夹角为90度，且λ/2相位差片260的慢轴(C轴)与第一偏光片140的吸收轴之间具有一夹角Ψ3，其中预设角度θ(θ＞45°)与夹角Ψ3是满足如下公式(3)：
Ψ3+θ=135° (3)。
请参照图9A及9B，图9A显示依照本发明的另一实施例的液晶显示面板的局部剖面示意图，图9B显示依照本发明的另一实施例的各角度的示意图。当λ/2相位差片260是贴合于第二基板120的外侧表面上时，λ/2相位差片260是位于第二基板120与第二偏光片150之间，第一偏光片140的吸收轴例如是垂直于第二偏光片150的吸收轴，亦即第一偏光片140与第二偏光片150的吸收轴之间的夹角为90度，且λ/2相位差片260的慢轴与第二偏光片150的吸收轴之间具有夹角Ψ4，其中预设角度θ(θ＞45°)与夹角Ψ4是满足如下公式(4)：
θ－Ψ4 =45° (4)。
在又一实施例中，液晶显示面板可例如为图案垂直配向(PVA) 型液晶显示面板，此时，液晶显示面板可未包括聚合物配向层。
由上述可知，在本发明的液晶显示面板及其应用的显示装置中，可通过像素电极结构的设计来改善VA型液晶显示器的色偏问题，且可通过λ/2相位差片来调整液晶分子的倾倒方向与偏光片的吸收轴之间的夹角，以确保液晶显示面板的穿透率。因此，本发明的液晶显示面板及其应用的显示装置可改善液晶显示面板的色偏问题，并同时确保其穿透率。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
 本发明的实施方式
工业实用性
序列表自由内容

Claims (19)

  1. 一种液晶显示面板，包括：
    第一基板，包括第一电极；
    第二基板，包括第二电极，其中所述第二电极具有一像素电极结构，所述像素电极结构包括主干部及多个分支部，所述主干部与所述分支部之间具有一预设角度，所述预设角度为介于5度与85度且为45度以外的角度；
    液晶层，形成于所述第一基板与所述第二基板之间；
    第一偏光片，设置于所述第一基板的外侧；
    第二偏光片，设置于所述第二基板外侧；以及
    二分之一波长相位差片，贴合于所述第一基板或所述第二基板的外侧表面上。
  2. 根据权利要求1所述的液晶显示面板，其中所述预设角度是介于5度与42.5度之间。
  3. 根据权利要求1所述的液晶显示面板，其中所述预设角度是介于47.5度与85度之间。
  4. 根据权利要求1所述的液晶显示面板，其中所述二分之一波长相位差片是位于所述第一基板与所述第一偏光片之间。
  5. 根据权利要求4所述的液晶显示面板，其中所述预设角度(θ)是小于45度，所述二分之一波长相位差片的慢轴与所述第一偏光片的吸收轴之间具有一夹角(Ψ1)，其中所述预设角度(θ)与所述夹角(Ψ1)是满足如下公式：
    Ψ1+θ=45°。
  6. 根据权利要求4所述的液晶显示面板，其中所述预设角度(θ)是大于45度，所述二分之一波长相位差片的慢轴与所述第一偏光片的吸收轴之间具有一夹角(Ψ3)，其中所述预设角度(θ)与所述夹角(Ψ3)是满足如下公式：
    Ψ3+θ=135°。
  7. 根据权利要求1所述的液晶显示面板，其中所述二分之一波长相位差片是位于所述第二基板与所述第二偏光片之间。
  8. 根据权利要求7所述的液晶显示面板，其中所述预设角度(θ)是小于45度，所述二分之一波长相位差片的慢轴与所述第二偏光片的吸收轴之间具有一夹角(Ψ2)，其中所述预设角度(θ)与所述夹角(Ψ2)是满足如下公式：
    Ψ2+θ=45°。
  9. 根据权利要求7所述的液晶显示面板，其中所述预设角度(θ)是大于45度，所述二分之一波长相位差片的慢轴与所述第二偏光片的吸收轴之间具有一夹角(Ψ4)，其中所述预设角度(θ)与所述夹角(Ψ4)是满足如下公式：
    θ－Ψ4 =45°。
  10. 一种液晶显示面板，包括：
    第一基板，包括第一电极；
    第二基板，包括第二电极，其中所述第二电极具有一像素电极结构，所述像素电极结构包括主干部及多个分支部，所述主干部与所述分支部之间具有一预设角度，所述预设角度是小于或大于45度；
    液晶层，形成于所述第一基板与所述第二基板之间；
    第一偏光片，设置于所述第一基板的外侧；
    第二偏光片，设置于所述第二基板外侧；以及
    二分之一波长相位差片，贴合于所述第一基板或所述第二基板的外侧表面上。
  11. 根据权利要求10所述的液晶显示面板，其中所述预设角度是介于5度与42.5度之间。
  12. 根据权利要求10所述的液晶显示面板，其中所述预设角度是介于47.5度与85度之间。
  13. 根据权利要求10所述的液晶显示面板，其中所述二分之一波长相位差片是位于所述第一基板与所述第一偏光片之间。
  14. 根据权利要求13所述的液晶显示面板，其中所述预设角度(θ)是小于45度，所述二分之一波长相位差片的慢轴与所述第一偏光片的吸收轴之间具有一夹角(Ψ1)，其中所述预设角度(θ)与所述夹角(Ψ1)是满足如下公式：
    Ψ1+θ=45°。
  15. 根据权利要求13所述的液晶显示面板，其中所述预设角度(θ)是大于45度，所述二分之一波长相位差片的慢轴与所述第一偏光片的吸收轴之间具有一夹角(Ψ3)，其中所述预设角度(θ)与所述夹角(Ψ3)是满足如下公式：
    Ψ3+θ=135°。
  16. 根据权利要求10所述的液晶显示面板，其中所述二分之一波长相位差片是位于所述第二基板与所述第二偏光片之间。
  17. 根据权利要求16所述的液晶显示面板，其中所述预设角度(θ)是小于45度，所述二分之一波长相位差片的慢轴与所述第二偏光片的吸收轴之间具有一夹角(Ψ2)，其中所述预设角度(θ)与所述夹角(Ψ2)是满足如下公式：
    Ψ2+θ=45°。
  18. 根据权利要求16所述的液晶显示面板，其中所述预设角度(θ)是大于45度，所述二分之一波长相位差片的慢轴与所述第二偏光片的吸收轴之间具有一夹角(Ψ4)，其中所述预设角度(θ)与所述夹角(Ψ4)是满足如下公式：
    θ－Ψ4 =45°。
  19. 一种显示装置，包括：
    背光模块；以及
    液晶显示面板，包括：
    第一基板，包括第一电极；
    第二基板，包括第二电极，其中所述第二电极具有一像素电极结构，所述像素电极结构包括主干部及多个分支部，所述主干部与所述分支部之间具有一预设角度，所述预设角度是小于或大于45度；
    液晶层，形成于所述第一基板与所述第二基板之间；
    第一偏光片，设置于所述第一基板的外侧；
    第二偏光片，设置于所述第二基板外侧；以及
    二分之一波长相位差片，贴合于所述第一基板或所述第二基板的外侧表面上。
PCT/CN2012/076079 2012-05-24 2012-05-25 液晶显示面板及其应用的显示装置 WO2013174012A1 (zh)

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