WO2017107281A1 - 液晶显示面板 - Google Patents

液晶显示面板 Download PDF

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Publication number
WO2017107281A1
WO2017107281A1 PCT/CN2016/071760 CN2016071760W WO2017107281A1 WO 2017107281 A1 WO2017107281 A1 WO 2017107281A1 CN 2016071760 W CN2016071760 W CN 2016071760W WO 2017107281 A1 WO2017107281 A1 WO 2017107281A1
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Prior art keywords
domain structure
liquid crystal
rotation
polarizer
angle
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PCT/CN2016/071760
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English (en)
French (fr)
Inventor
唐岳军
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Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/909,814 priority Critical patent/US9904115B2/en
Publication of WO2017107281A1 publication Critical patent/WO2017107281A1/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
    • G02F1/1337—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
    • G02F1/1337—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
    • G02F1/1335—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
    • G02F1/136—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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • 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
    • G02F1/133538—Polarisers with spatial distribution of the polarisation direction
    • 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
    • G02F1/133757—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 with different alignment orientations
    • 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
    • G02F1/133761—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 with different pretilt angles
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/441—Interconnections, e.g. scanning lines
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices

Definitions

  • the present invention generally relates to the field of liquid crystal display technologies, and in particular, to a liquid crystal display panel.
  • a liquid crystal display or LCD (Liquid Crystal Display) is a flat, ultra-thin display device composed of a certain number of color or black-and-white pixels placed in front of a light source or a reflector.
  • LCD monitors have low power consumption and are characterized by high image quality, small size, and light weight. Therefore, they are favored by everyone and become the mainstream of displays.
  • Liquid crystal displays have been widely used in various electronic products, for example, computer devices with display screens, mobile phones, or digital photo frames.
  • the liquid crystal display panel is an important part of the liquid crystal display.
  • VA display technology is a general term for display technology of all liquid crystal vertical alignment.
  • MVA technology multi-quadrant vertical alignment technology
  • Conventional MVA technology has a relatively serious dark state light leakage due to the presence of protrusions. After the improvement, the protrusions are removed, the problem of light leakage in the dark state is greatly improved, and the penetration rate is also greatly improved, and the picture is more three-dimensional.
  • FIG. 1 is a plan view showing a liquid crystal of a conventional 8-domain VA liquid crystal display
  • FIG. 2 is a cross-sectional view showing a liquid crystal of the 8-domain VA liquid crystal display.
  • the liquid crystals of the upper and lower regions in FIG. 1 are respectively a four-domain structure, and the two four-domain structures constitute one sub-pixel.
  • the reference azimuth angles of the liquid crystal rotation of the two four-domain structures are the same.
  • FIG. 2 the tilt angles of the liquid crystals of the two four-domain structures are different, and therefore, one sub-pixel has eight liquid crystal rotation states.
  • the visual compensation effect is better. However, there is still a large amount of light leakage in the oblique direction, and there is also a certain color shift.
  • an object of the present invention is to provide a liquid crystal display panel to reduce oblique light leakage and color shift of a conventional liquid crystal display.
  • a liquid crystal display panel wherein a liquid crystal layer of the liquid crystal display panel includes a first four-domain structure, a second four-domain structure, a third four-domain structure, and a fourth a four-four domain structure, wherein the first four-domain structure, the second four-domain structure, the third four-domain structure, and the fourth four-domain structure constitute one sub-pixel, wherein the sub-pixel has 16 liquid crystal rotation states, wherein
  • the reference azimuth angle of the rotation of the liquid crystal of the first four-domain structure is the same as the reference azimuth angle of the liquid crystal rotation of the second four-domain structure
  • the reference azimuth angle of the liquid crystal rotation of the third four-domain structure is the same as the reference azimuth angle of the liquid crystal rotation of the fourth four-domain structure.
  • the reference azimuth angle of the first four-domain structure liquid crystal rotation is different from the reference azimuth angle of the third four-domain structure liquid crystal rotation by 40 degrees to 50 degrees, the inclination angle of the first four-domain structure liquid crystal rotation and the inclination angle of the second four-domain structure liquid crystal rotation are not Similarly, the tilt angle of the rotation of the third four-domain structure liquid crystal and the tilt angle of the liquid crystal rotation of the fourth four-domain structure are different.
  • the liquid crystal display panel further includes a polarizer, the first four-domain structure and the second four-domain structure share the polarizer, the third four-domain structure and the fourth four-domain structure share the polarizer, and the first four-domain structure
  • the angle between the absorption axis of the polarizer and the absorption axis of the polarizer of the third four-domain structure is 38 to 52 degrees.
  • the tilt angle of the rotation of the first four-domain structure liquid crystal is the same as the tilt angle of the liquid crystal rotation of the third four-domain structure
  • the tilt angle of the rotation of the liquid crystal of the second four-domain structure is the same as the tilt angle of the liquid crystal rotation of the fourth four-domain structure.
  • the first four domain structure and the third four domain structure receive data signals from the same TFT
  • the second four domain structure and the fourth four domain structure receive data signals from the same TFT
  • a liquid crystal display panel wherein a liquid crystal layer of the liquid crystal display panel includes a first four-domain structure, a second four-domain structure, a third four-domain structure, and a fourth a domain structure, wherein the first four-domain structure and the second four-domain structure constitute a first sub-pixel, and the third four-domain structure and the fourth four-domain structure constitute a second sub-pixel, the first sub-pixel and The second sub-pixel has a total of 16 liquid crystal rotation states, wherein the reference azimuth angle of the first four-domain structure liquid crystal rotation is the same as the reference azimuth angle of the second four-domain structure liquid crystal rotation, and the reference azimuth angle of the third four-domain structure liquid crystal rotation The reference azimuth angle of the liquid crystal rotation of the fourth four-domain structure is the same, the reference azimuth angle of the first four-domain structure liquid crystal rotation is different from the reference azimuth angle of the third four-domain structure liquid crystal rotation by 40 degrees to
  • the liquid crystal display panel further includes a polarizer, the first four-domain structure and the second four-domain structure share the polarizer, the third four-domain structure and the fourth four-domain structure share the polarizer, and the first four-domain structure
  • the angle between the absorption axis of the polarizer and the absorption axis of the polarizer of the third four-domain structure is 38 to 52 degrees.
  • the tilt angle of the rotation of the first four-domain structure liquid crystal is the same as the tilt angle of the liquid crystal rotation of the third four-domain structure
  • the tilt angle of the rotation of the liquid crystal of the second four-domain structure is the same as the tilt angle of the liquid crystal rotation of the fourth four-domain structure.
  • the first four domain structure and the third four domain structure receive data signals from the same TFT
  • second The four-domain structure and the fourth four-domain structure receive data signals from the same TFT.
  • a liquid crystal display panel wherein a liquid crystal layer of the liquid crystal display panel includes a first four-domain structure, a fourth four-domain structure, a second four-domain structure, and a third a domain structure, wherein the first four-domain structure and the fourth four-domain structure constitute a first sub-pixel, and the second four-domain structure and the third four-domain structure constitute a second sub-pixel, the first sub-pixel and The second sub-pixel has a total of 16 liquid crystal rotation states, wherein the reference azimuth angle of the first four-domain structure liquid crystal rotation is the same as the reference azimuth angle of the second four-domain structure liquid crystal rotation, and the reference azimuth angle of the third four-domain structure liquid crystal rotation The reference azimuth angle of the liquid crystal rotation of the fourth four-domain structure is the same, the reference azimuth angle of the first four-domain structure liquid crystal rotation is different from the reference azimuth angle of the third four-domain structure liquid crystal rotation by 40 degrees to
  • the liquid crystal display panel further includes a polarizer, the absorption axis of the polarizer of the first four-domain structure and the absorption axis of the polarizer of the second four-domain structure are parallel, and the absorption axis of the polarizer of the third four-domain structure
  • the angle of the absorption axis of the polarizer of the fourth four-domain structure is parallel to the absorption axis of the polarizer of the fourth four-domain structure, and the angle between the absorption axis of the polarizer of the third four-domain structure is 38 to 52 degrees.
  • the tilt angle of the rotation of the first four-domain structure liquid crystal is the same as the tilt angle of the liquid crystal rotation of the third four-domain structure
  • the tilt angle of the rotation of the liquid crystal of the second four-domain structure is the same as the tilt angle of the liquid crystal rotation of the fourth four-domain structure.
  • the first four domain structure and the third four domain structure receive data signals from the same TFT
  • the second four domain structure and the fourth four domain structure receive data signals from the same TFT
  • the liquid crystal layer of the liquid crystal display panel according to an exemplary embodiment of the present invention has 16 liquid crystal rotation states, which can reduce oblique light leakage to half of the existing 8-domain display technology, and increases the large viewing angle contrast of the squint.
  • the rotation directions of the liquid crystal molecules of the four four-domain structures are evenly distributed, and the color shift at the squint angle can be effectively reduced.
  • FIG. 1 shows a top view of a liquid crystal of a conventional 8-domain VA liquid crystal display
  • FIG. 2 is a cross-sectional view showing a liquid crystal of a conventional 8-domain VA liquid crystal display
  • FIG. 3 illustrates a liquid crystal top view of a liquid crystal display panel according to an exemplary embodiment of the present invention
  • FIG. 4 illustrates a liquid crystal pointing sectional view of a liquid crystal display panel according to an exemplary embodiment of the present invention
  • FIG. 5 is a cross-sectional view showing a liquid crystal of a liquid crystal display panel according to another embodiment of the present invention.
  • Figure 6 is a cross-sectional view showing a liquid crystal of a liquid crystal display panel according to another embodiment of the present invention.
  • FIG. 3 illustrates a liquid crystal top view of a liquid crystal display panel according to an exemplary embodiment of the present invention.
  • the liquid crystal layer of the liquid crystal layer liquid crystal display panel of the liquid crystal display panel shown in FIG. 3 includes the first four domain structure 10, the second four domain structure 20, the third four domain structure 30, and the fourth four domain structure 40 which are repeatedly arranged.
  • the arrangement of the four four-domain structures shown in FIG. 3 is not intended to limit the structure of the liquid crystal layer according to an exemplary embodiment of the present invention, and the four four-domain structures may be arranged in other ways.
  • a four domain structure has four liquid crystal rotation states. Specifically, the liquid crystal molecules in each domain of a four-domain structure are rotated in four directions under the action of voltage, and the angles between the projections of the four directions in the horizontal plane and the horizontal line are ⁇ , ⁇ +90, respectively. ⁇ +180, ⁇ +270, generally referred to as ⁇ is the reference azimuth angle of the rotation of the liquid crystal of the four-domain structure, and the four directions are the same as the angle of the horizontal plane, and the angle is referred to as the inclination angle of the rotation of the liquid crystal of the four-domain structure.
  • the above four four-domain structures included in the liquid crystal layer according to an exemplary embodiment of the present invention have a total of 16 liquid crystal rotation states.
  • the reference azimuth angle ⁇ 1 of the liquid crystal rotation of the first four-domain structure 10 and the reference azimuth angle ⁇ 2 of the liquid crystal rotation of the second four-domain structure 20 are the same, and the third four-domain structure 30 liquid crystal
  • the reference azimuth angle ⁇ 3 of the rotation is the same as the reference azimuth angle ⁇ 4 of the liquid crystal rotation of the fourth four-domain structure 40, and the reference azimuth angle ⁇ 1 of the liquid crystal rotation of the first four-domain structure 10 and the reference of the liquid crystal rotation of the third four-domain structure 30
  • the azimuth angle ⁇ 3 differs by 40 degrees to 50 degrees.
  • the angle at which the reference azimuth of the liquid crystal rotation of the first four-domain structure 10 is different from the reference azimuth angle of the liquid crystal rotation of the third four-domain structure 30 is preferably 45 degrees.
  • the reference azimuth angle of the liquid crystal rotation of the first four-domain structure 10 and the second four-domain structure 20 may be 45 degrees, the reference azimuth angle of the liquid crystal rotation of the third four-domain structure 30, and the reference orientation of the liquid crystal rotation of the fourth four-domain structure 40.
  • the angle can be 0 degrees. As shown in FIG.
  • the tilt angle ⁇ 1 of the liquid crystal rotation of the first four-domain structure 10 and the tilt angle ⁇ 2 of the liquid crystal rotation of the second four-domain structure 20 are different, and the tilt angle ⁇ 3 and the fourth fourth of the liquid crystal rotation of the third four-domain structure 30
  • the tilt angle ⁇ 4 of the domain structure 40 liquid crystal rotation is different.
  • the liquid crystal layer of the exemplary embodiment of the present invention has 16 liquid crystal rotation states, which are 8 liquid crystal rotation states more than the 8-domain display technology in the prior art, and can reduce the oblique light leakage to half of the 8-domain display technology. Left and right, the large viewing angle contrast of the squint is increased.
  • the reference azimuth of the liquid crystal rotation of the first four-domain structure 10, the second four-domain structure 20, the third four-domain structure 30, and the fourth four-domain structure 40 With a difference of 45 degrees, the liquid crystal molecules of the four four-domain structure are evenly distributed, which can effectively reduce the color shift when the squint angle is obtained.
  • the convex angle of the convex structure and the angle of the electrode slit of the third four-domain structure 30 and the fourth four-domain structure may be respectively set to the first four-domain structure 10 and the second four-domain structure.
  • the convex angle of the convex structure of 20 and the angle of the electrode slit are at an angle of 45 degrees to make the first four-domain structure 10, the second four-domain structure 20 and the third four-domain structure 30, and the fourth four-domain structure 40
  • the reference azimuth of the liquid crystal rotation is 45 degrees apart.
  • a photo-alignment method may also be employed to make the reference azimuth of the liquid crystal rotation of the first four-domain structure 10 and the second four-domain structure 20 and the third four-domain structure 30 and the fourth four-domain structure 40 45 degrees apart, for example,
  • the incident direction of the ultraviolet light of the alignment of the first four-domain structure 10 and the second four-domain structure 20 is different from the incident direction of the ultraviolet light of the alignment of the third four-domain structure 30 and the fourth four-domain structure 40 by 45 degrees.
  • the tilt angle of the rotation of a four-domain structure liquid crystal is related to the magnitude of the voltage received, in order to reduce the voltage-control element, in the exemplary embodiment according to the present invention, the tilt angle of the liquid crystal of the first four-domain structure 10 can be compared with the third four-domain.
  • the tilt angle of the liquid crystal rotation of the structure 30 is the same, and the tilt angle of the liquid crystal rotation of the second four-domain structure 20 is the same as the tilt angle of the liquid crystal rotation of the fourth four-domain structure 40.
  • four four-domain structures can receive data signals from four TFTs, and in order to reduce components, preferably, four sub-domain structures are located in the same sub-pixel.
  • the first four domain structure 10 and the third four domain structure 30 can receive data signals from the same TFT
  • the second four domain structure 20 and the fourth four domain structure 40 receive data signals from the same TFT, such that The 16-domain display can be realized without increasing the number of TFTs in the existing 8-domain display scheme.
  • the liquid crystal display panel according to an exemplary embodiment of the present invention may further include a polarizer.
  • the polarizer may be a metal wire grid polarizer or other structure that can achieve light polarization.
  • the absorption axis of the polarizer of the first four-domain structure 10 and the absorption axis of the polarizer of the second four-domain structure 20 are parallel.
  • the absorption axis of the polarizer of the third four-domain structure 30 and the absorption axis of the polarizer of the fourth four-domain structure 40 are parallel.
  • the angle between the absorption axis of the polarizer of the first four-domain structure 10 and the absorption axis of the polarizer of the third four-domain structure 30 is 38 to 52 degrees.
  • the angle between the absorption axes of the polarizers of the domain structure 30 is preferably 45 degrees.
  • each of the four four-domain structures can be rotated at a 45-degree angle with the absorption axis of the polarizer when rotated by a voltage, and the liquid crystal display panel has the highest light efficiency.
  • First four-domain junction in the same sub-pixel The structure 10 and the second four-domain structure 20 may share a polarizer, and the third four-domain structure 30 and the fourth four-domain structure 40 located in the same sub-pixel may share a polarizer.
  • the polarizer may be disposed in two upper and lower layers, and the upper and lower polarizers are hereinafter referred to as an upper polarizer and a lower polarizer.
  • the upper polarizer and the lower polarizer may be disposed outside the upper and lower substrates, or may be disposed in the upper and lower substrates, or one of the upper polarizer and the lower polarizer may be disposed outside the upper and lower substrates, and the other is disposed at Within the upper and lower substrates, a better optical effect can be obtained when both the upper polarizer and the lower polarizer are disposed within the upper and lower substrates.
  • the absorption axes of the upper polarizer and the lower polarizer in the same four-domain structure are perpendicular to each other.
  • the angle between the absorption axis of the upper polarizer or the lower polarizer of the first four-domain structure 10 and the absorption axis of the upper polarizer or the lower polarizer of the third four-domain structure 30 is preferably 45 degrees, and the second four-domain structure
  • the angle between the absorption axis of the upper polarizer or the lower polarizer of 20 and the absorption axis of the upper polarizer or the lower polarizer of the fourth four-domain structure 40 is preferably 45 degrees.
  • the upper polarizer and the lower polarizer may both be provided in a single layer structure, or may be provided in a double layer structure, or may be provided as a single layer structure, and the other may be provided in a double layer structure.
  • the structure of the single layer may be a metal wire grid polarizing plate, and the axial direction of the metal wire grid polarizing plate may be patterned.
  • the upper polarizing plate and the lower polarizing plate are disposed as metal wire grid polarizing plates, the upper polarizing plate and The pattern of the lower polarizer is preferably at an angle of 45 degrees.
  • the structure of the double layer may be a two-layer patterned organic polarizer such as a polyvinyl alcohol film optical polarizing plate or a dichroic organic dye type polarizing plate, and the axial direction of the double-layer organic polarizing plate is preferably 45.
  • the double-layered organic polarizer can be bonded together, but it is necessary to etch away the polarizer of the second organic polarizer while retaining the polarizer of the first organic polarizer, and it is necessary to retain the second
  • the polarizer of the first organic polarizer is etched away from the polarizer of the organic polarizer. .
  • the structure of the double layer may be a structure in which a layer of organic polarizer and a layer of patterned half wave plate are superimposed, wherein the half wave plate of the third four domain structure 30 and the fourth four domain structure 40 has a half wave
  • the phase delay, the half-wave plate of the first four-domain structure 10 and the second four-domain structure 20 has a phase retardation of zero.
  • the upper polarizer is arranged as a structure in which one layer of the organic polarizer and one layer of the patterned half-wave plate are superimposed, a patterned half-wave plate and a half-wave plate are added to the polarizer near the liquid crystal side of the organic polarizer.
  • the slow axis and the organic polarizer are about 22.5 degrees in the axial direction, and the vibration direction of the polarized light passing through the liquid crystal layer can be deflected by 45 degrees and then passed through the upper polarized photo; for the lower polarizer to be an organic polarizer and a
  • a patterned half-wave plate is added to the polarizer near the liquid crystal side of the organic polarizer, and the slow axis of the half-wave plate and the organic polarizer are about 22.5 degrees in the axial direction.
  • the vibration direction of the polarized light after passing through the organic polarizer can be deflected by 45 degrees and then passed through the liquid crystal layer.
  • liquid crystal display panel may further include other components, and since the improvement of the present invention mainly lies in the liquid crystal layer, other components are not described in detail.
  • the first four-domain structure 10, the second four-domain structure 20, the third four-domain structure 30, and the fourth four-domain structure 40 may constitute one sub-pixel.
  • a liquid crystal directivity cross-sectional view of a liquid crystal display panel according to an exemplary embodiment of the present invention, as shown in FIG. 4, a first four-domain structure 10, a second four-domain structure 20, a third four-domain structure 30, and a fourth four-domain structure 40 The first four-domain structure 10 and the second four-domain structure 20 share the polarizer 501, and the third four-domain structure 30 and the fourth four-domain structure 40 share the polarizer 502, the polarizer 501 and the polarizer 502.
  • the direction of the absorption axis is shown by the direction of the arrow in the arrow, and the angle between the absorption axis of the polarizer 501 of the first four-domain structure 10 and the absorption axis of the polarizer 502 of the third four-domain structure 30 is preferably 45 degrees.
  • the first four-domain structure 10 and the second four-domain structure 20 constitute a first sub-pixel
  • the third four-domain structure 30 and the fourth four-domain structure 40 constitute a second sub-pixel.
  • a liquid crystal pointing sectional view of a liquid crystal display panel according to another embodiment of the present invention, a first four-domain structure 10 and a second four-domain structure 20 constitute a first sub-pixel, a third four-domain structure 30 and The fourth four-domain structure 40 constitutes a second sub-pixel, the first sub-pixel and the second sub-pixel are separated by a black matrix 60, and the first four-domain structure 10 and the second four-domain structure 20 share the polarizer 501, the third four The domain structure 30 and the fourth four-domain structure 40 share the polarizer 502.
  • the direction of the absorption axis of the polarizer 501 and the polarizer 502 is shown in the direction of the arrow, and the absorption axis of the polarizer 501 of the first four-domain structure 10 is the third and fourth.
  • the angle between the absorption axes of the polarizer 502 of the domain structure 30 is preferably 45 degrees.
  • first four-domain structure 10 and the fourth four-domain structure 40 constitute a first sub-pixel
  • the second four-domain structure 20 and the third four-domain structure 30 constitute a second sub-pixel.
  • a liquid crystal pointing sectional view of a liquid crystal display panel according to another embodiment of the present invention, a first four-domain structure 10 and a fourth four-domain structure 40 constitute a first sub-pixel, a second four-domain structure 20 and The third four-domain structure 30 constitutes a second sub-pixel, and the first sub-pixel and the second sub-pixel are separated by a black matrix 60.
  • the directions of the absorption axes of the polarizer 503, the polarizer 504, the polarizer 505, and the polarizer 506 are shown in the direction of the arrow, the absorption axis of the polarizer 503 of the first four-domain structure 10, and the polarizer 504 of the second four-domain structure 20.
  • the absorption axes are parallel, the absorption axis of the polarizer 505 of the third four-domain structure 30 is parallel to the absorption axis of the polarizer 506 of the fourth four-domain structure 40, and the absorption axis of the polarizer 503 of the first four-domain structure 10 is
  • the angle between the absorption axes of the polarizer 505 of the third four-domain structure 30 is preferably 45 degrees.
  • the first sub-pixel and the second sub-pixel are alternately arranged in the column direction or the row direction of the pixel array.
  • the sub-pixels of each color of RGB are arranged in an alternating arrangement of the first sub-pixel and the second sub-pixel, It may be that the R sub-pixel odd-numbered behavior is the first sub-pixel structure, and the R sub-pixel even-number behavior is the second sub-pixel structure.
  • the liquid crystal layer of the liquid crystal display panel according to an exemplary embodiment of the present invention has 16 liquid crystal rotation states, which can reduce oblique light leakage to half of the existing 8-domain display technology, and increases the large viewing angle contrast of the squint.
  • the rotation directions of the four four-domain liquid crystal molecules are uniformly distributed, and the color shift at the squint angle can be effectively reduced.
  • first, second, etc. may be used to describe different components, components, regions, layers and/or portions, but these components, components, regions, layers and/or portions should not be referred to by these terms. limit. These terms are only used to distinguish one component, component, region, layer, or section from another component, component, region, layer or section. Thus, a first component, component, region, layer or section discussed below may be referred to as a second component, component, region, layer or section, without departing from the teachings of the exemplary embodiments.

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Abstract

一种液晶显示面板，液晶显示面板的液晶层包括重复排列的第一四畴结构（10）、第二四畴结构（20）、第三四畴结构（30）和第四四畴结构（40），上述四个四畴结构组成一个子像素，子像素具有16个液晶转动状态，其中，第一四畴结构（10）液晶转动的基准方位角（θ1）和第二四畴结构（20）液晶转动的基准方位角（θ2）相同，第三四畴结构（30）液晶转动的基准方位角（θ3）和第四四畴结构（40）液晶转动的基准方位角（θ4）相同，第一四畴结构（10）液晶转动的基准方位角（θ1）与第三四畴结构（30）液晶转动的基准方位角（θ3）相差40度至50度，第一四畴结构（10）液晶转动的倾角（β1）和第二四畴结构（20）液晶转动的倾角（β2）不相同，第三四畴结构（30）液晶转动的倾角（β3）和第四四畴结构（40）液晶转动的倾角（β4）不相同。可减少斜向漏光和色偏，增大斜视的大视角对比度。

Description

液晶显示面板 技术领域
本发明总体说来涉及液晶显示器技术领域,尤其涉及一种液晶显示面板。
背景技术
液晶显示器，或称LCD(Liquid Crystal Display)，为平面超薄的显示设备，它由一定数量的彩色或黑白像素组成，放置于光源或者反射板前方。液晶显示器功耗很低，并且具有高画质、体积小、重量轻的特点，因此倍受大家青睐，成为显示器的主流。液晶显示器已广泛使用于各种电子产品中，例如，具显示屏幕的计算机设备、行动电话、或数字相框等。
液晶显示面板是液晶显示器的重要组成部分。目前已有多种显示技术，其中，VA显示技术是所有液晶垂直配向的显示技术的统称。根据像素结构的不同与液晶转动模式的不同，VA显示技术分为多种，MVA技术(多象限垂直配向技术)是其中的一种，其属于广视角显示技术。传统的MVA技术由于凸起物的存在，液晶显示画面存在比较严重的暗态漏光。经过改进，将所述凸起物进行了移除之后，大幅度地改善了暗态漏光的问题，同时穿透率也有了大幅度地提升，画面也更加立体。
图1示出现有的8畴VA液晶显示器的液晶俯视图，图2示出所述8畴VA液晶显示器的液晶指向断面图。图1中的上下两个区域的液晶分别为一个四畴结构，两个四畴结构组成了一个子像素。如图1所示，两个四畴结构的液晶转动的基准方位角相同，如图2所示，两个四畴结构的液晶转动的倾角不相同，因此，一个子像素具有8个液晶转动状态，视觉补偿效果更佳。但是，其在斜向的方向上还存在很大的漏光，同时也还存在一定的色偏。
发明内容
有鉴于此，本发明目的是提供一种液晶显示面板，以减少现有的液晶显示器的斜向漏光以及色偏。
根据本发明示例性实施例的一方面提供一种液晶显示面板，该液晶显示面板的液晶层包括重复排列的第一四畴结构、第二四畴结构、第三四畴结构和第 四四畴结构，其中，所述第一四畴结构、第二四畴结构、第三四畴结构和第四四畴结构组成一个子像素，所述子像素具有16个液晶转动状态，其中，第一四畴结构液晶转动的基准方位角和第二四畴结构液晶转动的基准方位角相同，第三四畴结构液晶转动的基准方位角和第四四畴结构液晶转动的基准方位角相同，第一四畴结构液晶转动的基准方位角与第三四畴结构液晶转动的基准方位角相差40度至50度，第一四畴结构液晶转动的倾角和第二四畴结构液晶转动的倾角不相同，第三四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角不相同。
可选地，所述液晶显示面板还包括偏光片，第一四畴结构和第二四畴结构共用偏光片，第三四畴结构和第四四畴结构共用偏光片，第一四畴结构的偏光片的吸收轴与第三四畴结构的偏光片的吸收轴之间的夹角为38度至52度。
可选地，第一四畴结构液晶转动的倾角和第三四畴结构液晶转动的倾角相同，第二四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角相同。
可选地，第一四畴结构和第三四畴结构从同一个TFT接收数据信号，第二四畴结构和第四四畴结构从同一个TFT接收数据信号。
根据本发明示例性实施例的另一方面提供一种液晶显示面板，该液晶显示面板的液晶层包括重复排列的第一四畴结构、第二四畴结构、第三四畴结构和第四四畴结构，其中，所述第一四畴结构、第二四畴结构组成第一子像素，所述第三四畴结构和第四四畴结构组成第二子像素，所述第一子像素与第二子像素一共具有16个液晶转动状态，其中，第一四畴结构液晶转动的基准方位角和第二四畴结构液晶转动的基准方位角相同，第三四畴结构液晶转动的基准方位角和第四四畴结构液晶转动的基准方位角相同，第一四畴结构液晶转动的基准方位角与第三四畴结构液晶转动的基准方位角相差40度至50度，第一四畴结构液晶转动的倾角和第二四畴结构液晶转动的倾角不相同，第三四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角不相同。
可选地，所述液晶显示面板还包括偏光片，第一四畴结构和第二四畴结构共用偏光片，第三四畴结构和第四四畴结构共用偏光片，第一四畴结构的偏光片的吸收轴与第三四畴结构的偏光片的吸收轴之间的夹角为38度至52度。
可选地，第一四畴结构液晶转动的倾角和第三四畴结构液晶转动的倾角相同，第二四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角相同。
可选地，第一四畴结构和第三四畴结构从同一个TFT接收数据信号，第二 四畴结构和第四四畴结构从同一个TFT接收数据信号。
根据本发明示例性实施例的另一方面提供一种液晶显示面板，该液晶显示面板的液晶层包括重复排列的第一四畴结构、第四四畴结构、第二四畴结构和第三四畴结构，其中，所述第一四畴结构、第四四畴结构组成第一子像素，所述第二四畴结构和第三四畴结构组成第二子像素，所述第一子像素与第二子像素一共具有16个液晶转动状态，其中，第一四畴结构液晶转动的基准方位角和第二四畴结构液晶转动的基准方位角相同，第三四畴结构液晶转动的基准方位角和第四四畴结构液晶转动的基准方位角相同，第一四畴结构液晶转动的基准方位角与第三四畴结构液晶转动的基准方位角相差40度至50度，第一四畴结构液晶转动的倾角和第二四畴结构液晶转动的倾角不相同，第三四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角不相同。
可选地，所述液晶显示面板还包括偏光片，第一四畴结构的偏光片的吸收轴和第二四畴结构的偏光片的吸收轴平行，第三四畴结构的偏光片的吸收轴和第四四畴结构的偏光片的吸收轴平行，第一四畴结构的偏光片的吸收轴与第三四畴结构的偏光片的吸收轴之间的夹角为38度至52度。
可选地，第一四畴结构液晶转动的倾角和第三四畴结构液晶转动的倾角相同，第二四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角相同。
可选地，第一四畴结构和第三四畴结构从同一个TFT接收数据信号，第二四畴结构和第四四畴结构从同一个TFT接收数据信号。
根据本发明示例性实施例的液晶显示面板的液晶层具有16个液晶转动状态，可以将斜向漏光减少为现有的8畴显示技术的一半，增大了斜视的大视角对比度。此外，四个四畴结构的液晶分子的转动方向均匀分布，可有效地减小斜视角度时的色偏。
附图说明
通过下面结合附图进行的详细描述，本发明示例性实施例的上述和其它目的、特点和优点将会变得更加清楚，其中：
图1示出现有的8畴VA液晶显示器的液晶俯视图；
图2示出现有的8畴VA液晶显示器的液晶指向断面图；
图3示出根据本发明示例性实施例的液晶显示面板的液晶俯视图；
图4示出根据本发明示例性实施例的液晶显示面板的液晶指向断面图；
图5示出根据本发明另一实施例的液晶显示面板的液晶指向断面图；
图6示出根据本发明另一实施例的液晶显示面板的液晶指向断面图。
具体实施方式
现将详细参照本发明的示例性实施例，所述实施例的示例在附图中示出，其中，相同的标号始终指的是相同的部件。以下将通过参照附图来说明所述实施例，以便解释本发明。
图3示出根据本发明示例性实施例的液晶显示面板的液晶俯视图。图3所示的液晶显示面板的液晶层液晶显示面板的液晶层包括重复排列的第一四畴结构10、第二四畴结构20、第三四畴结构30和第四四畴结构40。图3所示的四个四畴结构的排列方式不用于限制根据本发明的示例性实施例的液晶层的结构，所述四个四畴结构还可以其他的排列方式。
本领域技术人员可以理解，一个四畴结构具有4个液晶转动状态。具体说来，一个四畴结构的各个畴中的液晶分子在电压的作用下，会分别沿着4个方向转动，这4个方向在水平面的投影与水平线的夹角分别为θ、θ+90、θ+180、θ+270，一般称θ为该四畴结构液晶转动的基准方位角，这4个方向与水平面的夹角相同，该夹角被称为该四畴结构液晶转动的倾角。
根据本发明示例性实施例的液晶层包括的上述四个四畴结构一共具有16个液晶转动状态。具体说来，如图3所示，所述第一四畴结构10液晶转动的基准方位角θ1和第二四畴结构20液晶转动的基准方位角θ2相同，第三四畴结构30液晶转动的基准方位角θ3和第四四畴结构40液晶转动的基准方位角θ4相同，且第一四畴结构10液晶转动的基准方位角θ1与第三四畴结构30液晶转动的基准方位角θ3相差40度至50度。这里，第一四畴结构10液晶转动的基准方位角与第三四畴结构30液晶转动的基准方位角相差的角度优选为45度。例如，第一四畴结构10和第二四畴结构20液晶转动的基准方位角可以为45度，第三四畴结构30液晶转动的基准方位角和第四四畴结构40液晶转动的基准方位角可以为0度。如图4所示，第一四畴结构10液晶转动的倾角β1和第二四畴结构20液晶转动的倾角β2不相同，第三四畴结构30液晶转动的倾角β3和第四四畴结构40液晶转动的倾角β4不相同。
这样，本发明示例性实施例的液晶层具有16个液晶转动状态，其比现有技术中的8畴显示技术多了8个液晶转动状态，可以将斜向漏光减少为8畴显示技术的一半左右，增大了斜视的大视角对比度。此外，由于第一四畴结构10、第二四畴结构20与第三四畴结构30、第四四畴结构40液晶转动的基准方位角 相差45度，四个四畴结构的液晶分子的转动方向均匀分布，可有效地减小斜视角度时的色偏。
作为优选示例，可通过将设置第三四畴结构30、第四四畴结构的凸起结构的凸起角度以及电极slit(缝隙)的角度分别与第一四畴结构10、第二四畴结构20的凸起结构的凸起角度以及电极slit的角度成45度的夹角，来使第一四畴结构10、第二四畴结构20与第三四畴结构30、第四四畴结构40液晶转动的基准方位角相差45度。例如，还可以采用光配向方法来使第一四畴结构10、第二四畴结构20与第三四畴结构30、第四四畴结构40液晶转动的基准方位角相差45度，例如，将第一四畴结构10、第二四畴结构20的配向的紫外光的入射方向与第三四畴结构30、第四四畴结构40的配向的紫外光的入射方向相差45度。由于一个四畴结构液晶转动的倾角与受到的电压的大小有关，为了减少控制电压的元件，在根据本发明示例性实施例中，第一四畴结构10液晶转动的倾角可和第三四畴结构30液晶转动的倾角相同，第二四畴结构20液晶转动的倾角可和第四四畴结构40液晶转动的倾角相同。这样，在由TFT(薄膜场效应晶体管)控制电压的液晶显示面板中，四个四畴结构可以从四个TFT接收数据信号，为了减少元件，优选地，在四个四畴结构位于同一个子像素中的情况，第一四畴结构10和第三四畴结构30可从同一个TFT接收数据信号，第二四畴结构20和第四四畴结构40从同一个TFT接收数据信号，这样，在现有的8畴显示方案中不增加TFT的数量就可实现16畴显示。此外，也可以在向第一四畴结构10和第三四畴结构30提供数据信号的TFT基础上增加一个电容并通过电容自耦效应向第二四畴结构20和第四四畴结构40提供数据信号。
根据本发明示例性实施例的液晶显示面板还可包括偏光片。所述偏光片可以是金属线栅偏振片或其他可实现光偏振的结构。第一四畴结构10的偏光片的吸收轴和第二四畴结构20的偏光片的吸收轴平行。第三四畴结构30的偏光片的吸收轴和第四四畴结构40的偏光片的吸收轴平行。并且，第一四畴结构10的偏光片的吸收轴与第三四畴结构30的偏光片的吸收轴之间的夹角为38度至52度。在第一四畴结构10液晶转动的基准方位角与第三四畴结构30液晶转动的基准方位角相差的角度为45度时,第一四畴结构10的偏光片的吸收轴与第三四畴结构30的偏光片的吸收轴之间的夹角优选为45度。这样，可以使上述四个四畴结构中的每个液晶分子在电压的作用下转动时与其偏光片的吸收轴成45度夹角，这时液晶显示面板的光效率最高。位于同一个子像素中的第一四畴结 构10与第二四畴结构20可共用偏光片，位于同一个子像素中的第三四畴结构30和第四四畴结构40可共用偏光片。
作为示例，所述偏光片可以设置为上下两层，以下将上下两层偏光片称为上偏光片和下偏光片。上偏光片和下偏光片可以都设置在上下基板之外，也可以都设置在上下基板之内，也可以上偏光片和下偏光片中的一个设置在上下基板之外，另一个设置在在上下基板之内，当上偏光片和下偏光片都设置在上下基板之内时可以取得更好的光学效果。同一四畴结构中的上偏光片和下偏光片的吸收轴相互垂直。第一四畴结构10的上偏光片或下偏光片的吸收轴与第三四畴结构30的上偏光片或下偏光片的吸收轴之间的夹角优选为45度，第二四畴结构20的上偏光片或下偏光片的吸收轴与第四四畴结构40的上偏光片或下偏光片的吸收轴之间的夹角优选为45度。
所述上偏光片和下偏光片可以都设置为单层的结构，也可以都设置为双层的结构，还可以一个设置为单层的结构，另一个设置为双层的结构。
所述单层的结构可以是金属线栅偏振片，金属线栅偏振片的轴向可以是图案化的，当上偏光片和下偏光片都设置为金属线栅偏振片时，上偏光片和下偏光片的图案优选成45度夹角。
所述双层的结构可以为双层的图案化的有机偏光片，如聚乙烯醇薄膜光学偏振片、二色性有机染料型偏振片，所述双层的有机偏光片的轴向优选成45度夹角，所述双层的有机偏光片可以粘结在一起，但是需要在保留第一层有机偏光片的偏光子的地方蚀刻掉第二层有机偏光片的偏光子，需要在保留第二层有机偏光片的偏光子的地方蚀刻掉第一层机偏光片的偏光子。。
所述双层的结构可以为为一层有机偏光片和一层图案化的半波片相叠加的结构，其中,第三四畴结构30和第四四畴结构40的半波片具有半波的相位延迟，第一四畴结构10和第二四畴结构20的半波片具有0相位延迟。对于将上偏光片设置为一层有机偏光片和一层图案化的半波片相叠加的结构的情况，在有机偏光片的偏光子近液晶侧增加一图案化的半波片，半波片的慢轴与有机偏光片轴向成22.5度左右，可以将通过液晶层后的偏振光的振动方向偏转45度后再通过上偏光子；对于将下偏光片设置为一层有机偏光片和一层图案化的半波片相叠加的结构的情况，在有机偏光片的偏光子近液晶侧增加一图案化的半波片，半波片的慢轴与有机偏光片轴向成22.5度左右，可以将通过有机偏光片后的偏振光的振动方向偏转45度后再经过液晶层。
应该理解，根据本发明示例性实施例的液晶显示面板还可以包括其他部件，由于本发明的改进点主要在于液晶层，因此未对其他部件进行详细描述。
在根据本发明示例性实施例中，第一四畴结构10、第二四畴结构20、第三四畴结构30和第四四畴结构40可组成一个子像素。如图4所示的根据本发明示例性实施例的液晶显示面板的液晶指向断面图，第一四畴结构10、第二四畴结构20、第三四畴结构30和第四四畴结构40组成了一个子像素，第一四畴结构10和第二四畴结构20共用偏光片501，第三四畴结构30和第四四畴结构40共用偏光片502，偏光片501和偏光片502的吸收轴的方向见图中箭头方向，第一四畴结构10的偏光片501的吸收轴与第三四畴结构30的偏光片502的吸收轴之间的夹角优选为45度。
在另一个实施例中，第一四畴结构10和第二四畴结构20组成第一子像素，第三四畴结构30和第四四畴结构40组成第二子像素。如图5所示的根据本发明的另一实施例的液晶显示面板的液晶指向断面图，第一四畴结构10和第二四畴结构20组成第一子像素，第三四畴结构30和第四四畴结构40组成第二子像素，第一子像素和第二子像素通过黑色矩阵60进行了隔离，第一四畴结构10和第二四畴结构20共用偏光片501，第三四畴结构30和第四四畴结构40共用偏光片502，偏光片501和偏光片502的吸收轴的方向见图中箭头方向，第一四畴结构10的偏光片501的吸收轴与第三四畴结构30的偏光片502的吸收轴之间的夹角优选为45度。
在另一个实施例中，第一四畴结构10和第四四畴结构40组成第一子像素，第二四畴结构20和第三四畴结构30组成第二子像素。如图6所示的根据本发明的另一实施例的液晶显示面板的液晶指向断面图，第一四畴结构10和第四四畴结构40组成第一子像素，第二四畴结构20和第三四畴结构30组成第二子像素，第一子像素和第二子像素通过黑色矩阵60进行了隔离。偏光片503、偏光片504、偏光片505和偏光片506的吸收轴的方向见图中箭头方向，第一四畴结构10的偏光片503的吸收轴和第二四畴结构20的偏光片504的吸收轴平行，第三四畴结构30的偏光片505的吸收轴和第四四畴结构40的偏光片506的吸收轴平行，并且，第一四畴结构10的偏光片503的吸收轴与第三四畴结构30的偏光片505的吸收轴之间的夹角优选为45度。
上述第一子像素和第二子像素在像素阵列的列方向上或者行方向上交替排列。例如RGB每种颜色的子像素排布为第一子像素和第二子像素交替的排列， 可以是R子像素奇数行为第一次像素结构，R子像素偶数行为第二次像素结构。
根据本发明示例性实施例的液晶显示面板的液晶层具有16个液晶转动状态，可以将斜向漏光减少为现有的8畴显示技术的一半，增大了斜视的大视角对比度。此外，四个四畴的液晶分子的转动方向均匀分布，可有效地减小斜视角度时的色偏。
应该理解，尽管在这里可使用术语第一、第二等来描述不同的组件、组件、区域、层和/或部分，但是这些组件、组件、区域、层和/或部分不应被这些术语所限制。这些术语仅用于区分一个组件、组件、区域、层或部分与另一组件、组件、区域、层或部分。因此，在不脱离示例性实施例的教导的情况下，下面讨论的第一组件、组件、区域、层或部分可以被称为第二组件、组件、区域、层或部分。
尽管已经参照其示例性实施例具体显示和描述了本发明，但是本领域的技术人员应该理解，在不脱离权利要求所限定的本发明的精神和范围的情况下，可以对其进行形式和细节上的各种改变。

Claims (10)

  1. 一种液晶显示面板，其中，液晶显示面板的液晶层包括重复排列的第一四畴结构、第二四畴结构、第三四畴结构和第四四畴结构，
    其中，所述第一四畴结构、第二四畴结构、第三四畴结构和第四四畴结构组成一个子像素，所述子像素具有16个液晶转动状态，
    其中，第一四畴结构液晶转动的基准方位角和第二四畴结构液晶转动的基准方位角相同，第三四畴结构液晶转动的基准方位角和第四四畴结构液晶转动的基准方位角相同，第一四畴结构液晶转动的基准方位角与第三四畴结构液晶转动的基准方位角相差40度至50度，第一四畴结构液晶转动的倾角和第二四畴结构液晶转动的倾角不相同，第三四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角不相同。
  2. 根据权利要求1所述的液晶显示面板，其中，还包括偏光片，第一四畴结构和第二四畴结构共用偏光片，第三四畴结构和第四四畴结构共用偏光片，第一四畴结构的偏光片的吸收轴与第三四畴结构的偏光片的吸收轴之间的夹角为38度至52度。
  3. 根据权利要求1所述的液晶显示面板，其中，第一四畴结构液晶转动的倾角和第三四畴结构液晶转动的倾角相同，第二四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角相同。
  4. 根据权利要求3所述的液晶显示面板，其中，第一四畴结构和第三四畴结构从同一个TFT接收数据信号，第二四畴结构和第四四畴结构从同一个TFT接收数据信号。
  5. 一种液晶显示面板，其中，液晶显示面板的液晶层包括重复排列的第一四畴结构、第二四畴结构、第三四畴结构和第四四畴结构，
    其中，所述第一四畴结构、第二四畴结构组成第一子像素，所述第三四畴结构和第四四畴结构组成第二子像素，所述第一子像素与第二子像素一共具有16个液晶转动状态，
    其中，第一四畴结构液晶转动的基准方位角和第二四畴结构液晶转动的基准方位角相同，第三四畴结构液晶转动的基准方位角和第四四畴结构液晶转动的基准方位角相同，第一四畴结构液晶转动的基准方位角与第三四畴结构液晶转动的基准方位角相差40度至50度，第一四畴结构液晶转动的倾角和第二四畴结构液晶转动的倾角不相同，第三四畴结构液晶转动的倾角和第四四畴结构 液晶转动的倾角不相同。
  6. 根据权利要求5所述的液晶显示面板，其中，还包括偏光片，第一四畴结构和第二四畴结构共用偏光片，第三四畴结构和第四四畴结构共用偏光片，第一四畴结构的偏光片的吸收轴与第三四畴结构的偏光片的吸收轴之间的夹角为38度至52度。
  7. 根据权利要求5所述的液晶显示面板，其中，第一四畴结构液晶转动的倾角和第三四畴结构液晶转动的倾角相同，第二四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角相同。
  8. 一种液晶显示面板，其中，液晶显示面板的液晶层包括重复排列的第一四畴结构、第四四畴结构、第二四畴结构和第三四畴结构，
    其中，所述第一四畴结构、第四四畴结构组成第一子像素，所述第二四畴结构和第三四畴结构组成第二子像素，所述第一子像素与第二子像素一共具有16个液晶转动状态，
    其中，第一四畴结构液晶转动的基准方位角和第二四畴结构液晶转动的基准方位角相同，第三四畴结构液晶转动的基准方位角和第四四畴结构液晶转动的基准方位角相同，第一四畴结构液晶转动的基准方位角与第三四畴结构液晶转动的基准方位角相差40度至50，第一四畴结构液晶转动的倾角和第二四畴结构液晶转动的倾角不相同，第三四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角不相同。
  9. 根据权利要求8所述的液晶显示面板，其中，还包括偏光片，第一四畴结构的偏光片的吸收轴和第二四畴结构的偏光片的吸收轴平行，第三四畴结构的偏光片的吸收轴和第四四畴结构的偏光片的吸收轴平行，第一四畴结构的偏光片的吸收轴与第三四畴结构的偏光片的吸收轴之间的夹角为38度至52度。
  10. 根据权利要求8所述的液晶显示面板，其中，第一四畴结构液晶转动的倾角和第三四畴结构液晶转动的倾角相同，第二四畴结构液晶转动的倾角和第四四畴结构液晶转动的倾角相同。
PCT/CN2016/071760 2015-12-25 2016-01-22 液晶显示面板 Ceased WO2017107281A1 (zh)

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