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WO2021035636A1 - 液晶显示面板及显示装置 - Google Patents

液晶显示面板及显示装置 Download PDF

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Publication number
WO2021035636A1
WO2021035636A1 PCT/CN2019/103411 CN2019103411W WO2021035636A1 WO 2021035636 A1 WO2021035636 A1 WO 2021035636A1 CN 2019103411 W CN2019103411 W CN 2019103411W WO 2021035636 A1 WO2021035636 A1 WO 2021035636A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
display panel
light scattering
polarizer
Prior art date
Application number
PCT/CN2019/103411
Other languages
English (en)
French (fr)
Inventor
张霖
汪洪亮
戴珂
郭磊
廖燕平
Original Assignee
京东方科技集团股份有限公司
合肥京东方显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 合肥京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN201980001555.9A priority Critical patent/CN112752995A/zh
Priority to US16/959,217 priority patent/US11487151B2/en
Priority to PCT/CN2019/103411 priority patent/WO2021035636A1/zh
Priority to JP2020573423A priority patent/JP7474716B2/ja
Priority to EP19933239.6A priority patent/EP4024125B1/en
Publication of WO2021035636A1 publication Critical patent/WO2021035636A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133601—Illuminating devices for spatial active dimming
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or 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
    • G02F2203/00—Function characteristic
    • G02F2203/03—Function characteristic scattering

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a liquid crystal display panel and a display device.
  • Liquid crystal display is an important flat panel display device, which has been widely used in mobile phones, vehicles, monitors, televisions, and public displays. And with the widespread use of liquid crystal display panels and the increase in size, more and more people use liquid crystal display panels to watch movies and play games, and thus pay more and more attention to the display quality.
  • the embodiment of the present disclosure provides a liquid crystal display panel, including:
  • the first polarizer is located on the side of the liquid crystal display structure away from the liquid crystal light control structure;
  • the second polarizer is located on the side of the liquid crystal light control structure away from the liquid crystal display structure;
  • At least one of the first polarizer and the second polarizer has a light scattering structure.
  • the above-mentioned liquid crystal display panel provided by the embodiment of the present disclosure further includes: a third polarizer located between the liquid crystal display structure and the liquid crystal light control structure;
  • At least one of the first polarizer, the second polarizer, and the third polarizer has a light scattering structure.
  • the film layer in the polarizer with the light scattering structure is doped with transparent particles to form the light scattering structure.
  • the polarizer with the light scattering structure includes: a pressure-sensitive adhesive layer, a first optical film layer, and a first optical film layer that are stacked in sequence.
  • An adhesive layer, a polyvinyl alcohol film layer, a second adhesive layer and a second optical film layer; and the pressure-sensitive adhesive layer is located between the first optical film layer and the liquid crystal display structure, or is located in the Between the first optical film layer and the liquid crystal light control structure;
  • At least one of the pressure-sensitive adhesive layer, the first optical film layer, the first adhesive layer, the polyvinyl alcohol film layer, the second adhesive layer, and the second optical film layer A film layer is doped with transparent particles, and the film layer doped with transparent particles constitutes the light scattering structure.
  • the pressure-sensitive adhesive layer of the first polarizer is doped with transparent particles to form the light scattering structure.
  • the polarizer with the light scattering structure includes: a pressure-sensitive adhesive layer, a first optical film layer, and a first optical film layer that are stacked in sequence.
  • An adhesive layer, a polyvinyl alcohol film layer, a second adhesive layer and a second optical film layer; and the pressure-sensitive adhesive layer is located between the first optical film layer and the liquid crystal display structure, or is located in the Between the first optical film layer and the liquid crystal light control structure;
  • the light scattering structure is located on a side of the second optical film layer away from the second adhesive layer, and/or the light scattering structure is located between the pressure-sensitive adhesive layer and the liquid crystal display structure, And/or, the light scattering structure is located on the pressure-sensitive adhesive layer, the first optical film layer, the first adhesive layer, the polyvinyl alcohol film layer, the second adhesive layer and the Between at least two adjacent film layers in the second optical film layer.
  • the light scattering structure includes: an adhesive and transparent particles dispersed in the adhesive.
  • the light scattering structure is located on a side of the second optical film layer away from the second adhesive layer;
  • the polarizer of the light-scattering structure further includes: a transparent protective film on the side of the light-scattering structure away from the second optical film layer.
  • the light scattering structure is a film layer composed of transparent particles.
  • one side of the light scattering structure is in contact with the first adhesive layer or the second adhesive layer;
  • the polarizer with the light-scattering structure further includes a third adhesive layer in contact with the other side of the light-scattering structure.
  • the thickness of the light scattering structure is at least nanometers.
  • the haze value of the polarizer with the light scattering structure is 5%-100%.
  • the haze value of the polarizer with the light scattering structure is 40% to 80%.
  • the diameter of the transparent particles is nanometer level.
  • the material of the transparent particles is acrylic or silicon dioxide.
  • At least one of the first optical film layer and the second optical film layer is made of triacetic acid.
  • the first optical film of the first polarizer, the first optical film of the second polarizer, and The material of the second optical film and the first optical film of the third polarizer is cellulose triacetate; and the second optical film and the third polarizer of the first polarizer
  • the material of the second optical film is polyethylene terephthalate, acrylic acid or cycloolefin polymer.
  • the pressure-sensitive adhesive layer is doped with transparent particles to form the light scattering structure
  • a polarizer having the light scattering structure Also includes:
  • a fourth adhesive layer located on the side of the pressure-sensitive adhesive layer away from the first optical film layer, and a third optical film layer located between the third adhesive layer and the pressure-sensitive adhesive layer.
  • the liquid crystal light control structure includes: a plurality of signal lines extending in a first direction and a second direction that cross each other, and The signal line is a broken line.
  • the liquid crystal display structure includes: a gate line extending along the first direction, and a first shading line, the gate line Overlap with the first shading line in a direction perpendicular to the liquid crystal display panel;
  • the liquid crystal light control structure includes: a second shading line, and the signal line extending along the first direction and the second shading line overlap in a direction perpendicular to the liquid crystal display panel;
  • the ratio of the width of the first shading line to the width of the second shading line is 2.5-4.
  • the width of the first shading line is 100 ⁇ m to 120 ⁇ m
  • the width of the second shading line is 30 ⁇ m to 40 ⁇ m.
  • the liquid crystal light control structure further includes: a plurality of light control units defined by the signal line;
  • the liquid crystal display structure includes a plurality of grid lines extending in the first direction and the second direction crossing each other, the grid lines defining a plurality of sub-pixel units, which are continuously arranged along the first direction
  • the N sub-pixel units constitute a pixel unit, and N is a positive integer;
  • the plurality of pixel units and the plurality of light control units are respectively arranged in an array
  • the maximum length of one light control unit is m times the length of one pixel unit; along the second direction, the width of one light control unit is the same as that of one pixel unit. N times the width; m and n are both positive integers.
  • An embodiment of the present disclosure provides a display device, including: the above-mentioned liquid crystal display panel and a backlight source.
  • the embodiment of the present disclosure provides a liquid crystal display panel, which includes: a liquid crystal display structure and a liquid crystal light control structure that are arranged in a layered manner;
  • the liquid crystal display structure includes: a first grid line extending in a first direction, and a first shading line, the first grid line and the first shading line overlapping in a direction perpendicular to the liquid crystal display panel;
  • the liquid crystal light control structure includes: a second grid line extending along the first direction, and a second shading line, the second grid line and the second shading line are in a direction perpendicular to the liquid crystal display panel Upper overlap, the second gate line is a broken line;
  • the first orthographic projection of the first shading line in the direction perpendicular to the liquid crystal display panel and the second orthographic projection of the second shading line in the direction perpendicular to the liquid crystal display panel at least partially intersect Stack
  • the liquid crystal display panel further includes: a light scattering structure located in an area enclosed by the first orthographic projection and the second obscured orthographic projection.
  • the light scattering structure is also located in other areas outside the area enclosed by the first orthographic projection and the second orthographic projection. In the display area.
  • the shape of the area enclosed by the first orthographic projection and the second orthographic projection is a triangle or a semicircle.
  • Figure 1 is a schematic diagram of the principle of rainbow patterns in related technologies
  • FIG. 20 are respectively schematic cross-sectional structural diagrams of a liquid crystal display panel provided by an embodiment of the present disclosure
  • 21 and 22 are respectively a schematic top view of the structure of a liquid crystal light control structure provided by an embodiment of the disclosure.
  • FIG. 23 is a schematic top view of another liquid crystal display panel provided by an embodiment of the disclosure.
  • the liquid crystal display panel includes a liquid crystal display structure and a backlight unit.
  • LD local dimming technology
  • the display quality of the liquid crystal display panel can be improved.
  • the local dimming technology divides the entire backlight unit into a plurality of individually driveable backlight blocks, and each backlight block includes one or more LEDs. According to the gray scales that need to be displayed in different parts of the display screen, the driving current of the LEDs of the backlight partitions corresponding to these parts is automatically adjusted to realize the individual adjustment of the brightness of each partition in the backlight unit, thereby improving the contrast of the display screen.
  • the local dimming technology is suitable for direct-lit backlight units, and the LEDs as the light source are, for example, evenly distributed across the entire backplane.
  • the liquid crystal light control structure can control the light transmittance in a predetermined area.
  • the screen brightness (gray scale) is higher, and the light transmittance of the corresponding area of the liquid crystal light control structure is also high, allowing more light from the backlight unit to pass.
  • the light transmittance of the corresponding area of the liquid crystal light control structure is also low, allowing less light from the backlight unit to pass through, thereby achieving the purpose of improving the contrast of the display image and enhancing the display image quality.
  • the division of the backlight unit is difficult to achieve high density (the number of backlight units per unit area) and accuracy.
  • the liquid crystal light control structure can be used to achieve this requirement, and the manufacturing process of the liquid crystal light control structure is easy to implement.
  • the liquid crystal display panel including the liquid crystal display structure and the liquid crystal light control structure has a dual cell structure, and each of the liquid crystal display structure and the liquid crystal light control structure contains a layer of BM.
  • the overlay (Overlay) arrangement The grid patterns of the two layers of BM are similar, which is prone to moiré.
  • the BM design of the liquid crystal display structure is different from that of the liquid crystal light control structure.
  • the BM of the liquid crystal display structure (the black strip in Figure 1) is linear, and the BM of the liquid crystal light control structure (the black broken line in Figure 1) It has a zigzag shape, so that the BM in the liquid crystal display structure and the BM in the liquid crystal light control structure do not have the same or similar patterns, so that the human eye does not perceive the moiré and achieves the effect of eliminating or improving the moiré.
  • the zigzag-shaped BM in the liquid crystal light control structure has different shielding degrees for different sub-pixels; specifically, it is located at the overlap between the zigzag-shaped BM in the liquid crystal light control structure and the BM in the liquid crystal display structure.
  • the sub-pixels of are less obscured by the BM in the shape of a broken line. Therefore, the aperture ratio of the sub-pixel is relatively large, and the color of the sub-pixel will appear more when the liquid crystal display panel displays.
  • the zigzag-shaped BM in the liquid crystal light control structure and the BM in the liquid crystal display structure are stacked, resulting in different viewing angles for viewing the zigzag-shaped BM on the sub-pixels in the liquid crystal display structure; for example, in Figure 1 In the mid- ⁇ viewing angle, the broken-line BM shields the G sub-pixels less, and the liquid crystal display panel will show the color of the G sub-pixels more when displaying; while in the ⁇ viewing angle, the broken-line BM shields the R sub-pixels Less, the liquid crystal display panel will show more of the color of the R sub-pixel when displaying. Based on this, the liquid crystal display panel will show a rainbow pattern phenomenon.
  • FIG. 1 only exemplarily shows the sub-pixels of three colors of RGB. In specific implementation, it may also include, for example, white sub-pixel W, yellow sub-pixel Y or sub-pixels of other colors. Make a limit.
  • embodiments of the present disclosure provide a liquid crystal display panel and a display device.
  • the liquid crystal display panel provided by the present disclosure may include:
  • the first polarizer 003 is located on the side of the liquid crystal display structure 001 away from the liquid crystal light control structure 002;
  • the second polarizer 004 is located on the side of the liquid crystal light control structure 002 away from the liquid crystal display structure 001;
  • At least one of the first polarizer 003 and the second polarizer 004 has a light scattering structure 300.
  • the sub-pixels of different colors in the liquid crystal display structure 001 can be uniformly diffused by the light scattering structure 300. That is to say, the light scattering structure 300 can evenly mix the polarized light of different colors to a certain extent, so it can effectively improve or even eliminate The rainbow pattern phenomenon is improved, and the display quality is improved.
  • liquid crystal display panel provided by the embodiment of the present disclosure, as shown in FIGS. 2 to 20, it may further include: a third polarizer 005 located between the liquid crystal display structure 001 and the liquid crystal light control structure 002;
  • At least one of the first polarizer 003, the second polarizer 004, and the third polarizer 005 may be provided with a light scattering structure 300.
  • the light scattering structure 300 in the first polarizer 003 is used as an example for detailed description.
  • the light scattering structure 300 is provided in the second polarizer 004 and the third polarizer 005, please refer to the embodiment having the light scattering structure 300 in the first polarizer 003, and the repetition will not be repeated.
  • transparent particles in order to improve the rainbow pattern without adding a new film layer to achieve a light and thin design, transparent particles can be doped in the film layer of the polarizer. To form the light scattering structure 300. And in order to effectively improve the rainbow pattern, the transparent particles can be evenly distributed in the film layer of the polarizer.
  • the shape of the transparent particles may be, but not limited to, a spherical shape, a tube shape, or a block shape.
  • the particle size of the transparent particles is nanometer.
  • the material of the transparent particles can be acrylic, silica or other transparent materials known to those skilled in the art, which is not limited here.
  • the polarizer having the light scattering structure 300 may include: a pressure-sensitive adhesive layer 301, a first optical film layer 302, a first adhesive layer 303, The polyvinyl alcohol film layer 304, the second adhesive layer 305 and the second optical film layer 306; and the pressure-sensitive adhesive layer 301 is located between the first optical film layer 302 and the liquid crystal display structure 001 (as shown in FIGS. 3 to 8 ), or located between the first optical film layer 302 and the liquid crystal light control structure 002; wherein,
  • At least one of the pressure-sensitive adhesive layer 301, the first optical film layer 302, the first adhesive layer 303, the polyvinyl alcohol film layer 304, the second adhesive layer 305, and the second optical film layer 306 is doped with
  • the transparent particles and the film layer doped with the transparent particles constitute the light scattering structure 300.
  • transparent particles may be doped in the pressure-sensitive adhesive layer 301 to form the light scattering structure 300, as shown in FIG. 3; or, in the first optical film layer 302 is doped with transparent particles to form the light scattering structure 300, as shown in FIG. 4; or, the first adhesive layer 303 is doped with transparent particles to form the light scattering structure 300, as shown in FIG.
  • the vinyl alcohol film layer 304 is doped with transparent particles to form the light scattering structure 300, as shown in FIG. 6, or the second adhesive layer 305 is doped with transparent particles to form the light scattering structure 300, as shown in FIG.
  • transparent particles are doped in the second optical film layer 306 to form the light scattering structure 300, as shown in FIG. 8; or, under the condition of no conflict, the embodiments in FIGS. 3 to 8 can be combined arbitrarily , That is, to effectively improve the rainbow pattern phenomenon, it can be set in multiple layers of the polarizer that are doped with transparent particles.
  • the backlight after the backlight is emitted from each sub-pixel unit in the liquid crystal display structure 001, it will sequentially pass through the film layers of the first polarizer 003, and the emitted light is in the first polarizer 003.
  • only the pressure-sensitive adhesive layer 301 of the first polarizer 003 may be doped with transparent particles to form the light scattering structure 300.
  • the light scattering structure 300 may not only be a film layer doped with transparent particles in the above-mentioned polarizer, but also It is a newly added film layer in the polarizer.
  • the polarizer with a light-scattering structure includes: a pressure-sensitive adhesive layer 301, a first optical film layer 302, a first adhesive layer 303, polyethylene The alcohol film layer 304, the second adhesive layer 305 and the second optical film layer 306; and the pressure-sensitive adhesive layer 301 is located between the first optical film layer 302 and the liquid crystal display structure 001 (as shown in FIGS. 9-19), Or located between the first optical film layer 302 and the liquid crystal light control structure 002; wherein,
  • the light scattering structure 300 may be located on the side of the second optical film layer 306 away from the second adhesive layer 305, and/or the light scattering structure 300 may be located between the pressure-sensitive adhesive layer 301 and the liquid crystal display structure 001, and/or, The light scattering structure 300 may be located in at least two of the pressure-sensitive adhesive layer 301, the first optical film layer 302, the first adhesive layer 303, the polyvinyl alcohol film layer 304, the second adhesive layer 305, and the second optical film layer 306. Between adjacent layers.
  • the light scattering structure 300 may be located on the side of the second optical film layer 306 away from the second adhesive layer 305, as shown in FIG. 9; or, light scattering The structure 300 may be located between the pressure-sensitive adhesive layer 301 and the liquid crystal display structure 001, as shown in FIG. 10; or, the light scattering structure 300 may be located between the pressure-sensitive adhesive layer 301 and the first optical film layer 302, as shown in FIG. Or, the light scattering structure 300 may be located between the first optical film layer 302 and the first adhesive layer 303, as shown in FIG.
  • the light scattering structure 300 may be located between the first adhesive layer 303 and the polyvinyl alcohol Between the film layers 304, as shown in FIG. 13; or, the light scattering structure 300 may be located between the polyvinyl alcohol film layer 304 and the second adhesive layer 305, as shown in FIG. 14; or, the light scattering structure 300 may be located Between the second adhesive layer 305 and the second optical film layer 306, as shown in FIG. 15; or, if there is no conflict, the embodiments of FIGS. 9 to 15 can be combined arbitrarily. It can be understood that, in order to obtain a better effect of improving the rainbow pattern, the embodiments of FIG. 3 to FIG. 15 can also be combined arbitrarily without conflict.
  • the light scattering structure 300 in FIG. 9 is located on the side of the second optical film layer 306 away from the second adhesive layer 305 as a separate film layer: in specific implementation, it can be used as described above.
  • the light scattering structure 300 is used as a part of the polarizer; the light scattering structure 300 can also be regarded as a component independent of the polarizer, which is not limited here. In the same way, for the situation in FIG.
  • the light scattering structure 300 can be used as a part of the polarizer as described above; or The light scattering structure 300 is regarded as an isolated component between the liquid crystal display structure 001 and the polarizer, which is not limited here.
  • the light scattering structure 300 when the light scattering structure 300 is a newly-added film layer, the light scattering structure 300 may include: an adhesive and transparent particles dispersed in the adhesive; or The light scattering structure 300 can also be a film layer composed of transparent particles. In a specific implementation, an extrusion process or other film forming processes in related technologies may be used to fabricate the light scattering structure 300 composed of transparent particles.
  • the polarizer with the light scattering structure 300 may further include: a transparent protective film 307 on the side of the light scattering structure 300 away from the second optical film layer 306.
  • the light scattering structure 300 is fixed, and the light scattering structure 300 is a film layer composed of transparent particles, and one side of the light scattering structure 300 is connected to the first glue Under the condition that the adhesive layer 303 or the second adhesive layer 305 is in contact;
  • the polarizer with the light-scattering structure 300 may further include: a third adhesive layer 308 in contact with the other side of the light-scattering structure 300, as shown in FIGS. 16 to 19.
  • the thickness of the light scattering structure 300 is at least nanometers.
  • the thickness of the light scattering structure 300 is above the nanometer level; when the film layer in the polarizer is doped with transparent particles to form the light scattering structure 300, the light scattering structure 300 The thickness of is the same as or similar to the thickness of the corresponding film before the polarizer in the related art is not doped with transparent particles.
  • the haze value of the polarizer with the light scattering structure 300 may be 5%-100%, such as 25%, 20%, 55% or 60%, In this way, the effective improvement of the rainbow pattern can be achieved.
  • the haze value of the light scattering structure 300 when the haze value of the light scattering structure 300 is low (for example, 5%), the effect of improving the rainbow pattern is not very good; (For example, 100%), although the rainbow pattern can be effectively improved, it will affect the transmittance of the liquid crystal display panel. Therefore, in order to improve both the rainbow pattern phenomenon and the transmittance, the haze value of the polarizer with the light scattering structure 300 may be 40% to 80%, for example, 60%.
  • Table 1 shows the combination of the first polarizer 003, the third polarizer 005, the first polarizer 003 and the third polarizer 005, and the The combination of the second polarizer 004 and the third polarizer 005 is provided with the light scattering structure 300 to improve the related data of the rainbow pattern.
  • Type A in Table 1 represents that the light scattering structure 300 is disposed on the side of the second optical film 306 away from the second adhesive layer 305, and the type B represents that the light scattering structure 300 is a pressure-sensitive adhesive layer 301 doped with transparent particles.
  • the haze value represents the haze value of the polarizer with the light scattering structure 300. Haze is the percentage of the transmitted light intensity that deviates from the incident light at an angle of more than 2.5° to the total transmitted light intensity. In layman's terms, the concept of haze can be understood as the ability to scatter light. In the present disclosure, the volume and mass of the nano-scale transparent particles can be neglected. Therefore, the haze value can be used to consider how many transparent particles are contained in the light scattering structure 300. The larger the haze value, the more transparent particles are contained. many. The smaller the L value of the rainbow pattern, the less obvious the rainbow pattern.
  • the light scattering structure 300 is a pressure-sensitive adhesive layer 301 doped with transparent particles. In the case of type B, the rainbow pattern improvement effect is better.
  • the light scattering structure 300 with a haze value of 60%, 55%, and 40% formed by doping the pressure-sensitive adhesive layer 301 of the first polarizer 003 with transparent particles the light with the higher haze value
  • the improvement effect of the scattering structure 300 on the rainbow pattern is better.
  • the pressure-sensitive adhesive layer 301 of the first polarizer 003 is doped with a light scattering structure 300 with a haze value of 60% composed of transparent particles, which not only can significantly improve the rainbow pattern phenomenon, but also has a higher contrast.
  • the material of at least one of the first optical film layer 302 and the second optical film layer 306 may be triacetyl cellulose (TAC), Polyethylene terephthalate (PET), acrylic (Acrylic) or cycloolefin polymers are not limited here.
  • the first optical film 302 of the first polarizer 003 and the first optical film 302 of the third polarizer 005 The material of the film 302 and the second optical film 306, and the first optical film 302 of the second polarizer 004 is cellulose triacetate; and the second optical film 306 of the first polarizer 003 and the second optical film 306 of the second polarizer 004
  • the material of the optical film 306 is polyethylene terephthalate, acrylic acid, or cycloolefin polymer.
  • a release film is generally provided on the side of the pressure-sensitive adhesive layer 301 away from the first optical film 302.
  • the release film is torn off, and the pressure-sensitive adhesive layer 301 is bonded to the liquid crystal display structure 001 or the liquid crystal light control structure 002.
  • the pressure-sensitive adhesive layer 301 is doped with transparent particles to form the light-scattering structure 300
  • the pressure-sensitive adhesive layer 301 is doped with transparent particles to increase its viscosity, so that the release film may be torn off at the same time. Damage to the pressure-sensitive adhesive layer 301 will weaken or even eliminate the function of the light scattering structure 300 to improve the rainbow pattern, and the polarizer will become a waste piece.
  • the pressure-sensitive adhesive layer 301 is doped with transparent particles to form a light scattering structure
  • the polarizer with light scattering structure 300 may also include:
  • the fourth adhesive layer 309 located on the side of the pressure-sensitive adhesive layer 301 away from the first optical film layer 302, and the third optical film layer 310 located between the third adhesive layer 307 and the pressure-sensitive adhesive layer 301, as shown in FIG. 20 Shown.
  • the polarizer before the polarizer is attached to the liquid crystal display structure 001 or the liquid crystal light control structure 002, there is a layered arrangement between the release film and the light scattering structure 300 composed of the pressure-sensitive adhesive layer 301 doped with transparent particles.
  • the third adhesive layer 307 and the third optical film layer 310 so that in the process of tearing off the release film, through the third optical film layer 310 to achieve the composition of the pressure-sensitive adhesive layer 301 doped with transparent particles
  • the fourth adhesive layer 309 realizes the attachment between the polarizer and the liquid crystal display structure 001 or the liquid crystal light control structure 002. Therefore, the ease of tearing off the polarizer during maintenance is enhanced, and the cost is saved.
  • the material in the third optical film layer 310 may be triacetyl cellulose (TAC), polyethylene terephthalate (PET), acrylic (Acrylic) or cycloolefin polymer, which is not limited here.
  • the third optical film 310 is preferably made of triacetate cellulose (TAC).
  • the material of the first adhesive layer 303, the second adhesive layer 305, the third adhesive layer 308, and the fourth adhesive layer 309 may be ultraviolet rays. (UV) glue, water glue, pressure sensitive adhesive and other adhesives with good light transmittance, which are not limited here.
  • the liquid crystal light control structure 002 includes: a plurality of signal lines extending in a first direction and a second direction that cross each other 201, the signal line is a broken line. Since the signal lines extending in the first direction and the second direction are all trace lines, the grid formed by the signal lines extending in the first direction and the second direction is formed by the gate lines and data lines in the liquid crystal display structure 001 The grids do not have the same or similar patterns, therefore, the effect of eliminating moiré can be effectively improved, and the structure is simple and easy to manufacture. Based on this, the liquid crystal display panel provided by the embodiments of the present disclosure can control the direction or intensity of the backlight incident to the liquid crystal display structure 001 without adding an additional film layer specifically for eliminating moiré to achieve better moire elimination. The effect of the pattern.
  • the liquid crystal display structure 001 includes: a grid line extending in a first direction, and a first shading line, and the grid line and the first shading line are perpendicular to the liquid crystal display. Overlap in the direction of the panels;
  • the liquid crystal light control structure 002 includes: a second shading line, and the signal line extending along the first direction overlaps the second shading line in a direction perpendicular to the liquid crystal display panel;
  • the ratio of the width of the first shading line to the width of the second shading line is 2.5-4.
  • the width of the first shading line is 100 ⁇ m ⁇ 120 ⁇ m
  • the width of the second shading line is 30 ⁇ m ⁇ 40 ⁇ m.
  • the first shading line is a part of the black matrix in the liquid crystal display structure 001; the second shading line is a part of the black matrix in the liquid crystal light control structure 002.
  • the liquid crystal light control structure 002 further includes: a plurality of light control units 202 defined by signal lines 201;
  • the liquid crystal display structure 001 includes a plurality of grid lines (specifically, gate lines and data lines) extending in a first direction and a second direction crossing each other.
  • the grid lines define a plurality of sub-pixel units, which are continuously arranged along the first direction.
  • the N sub-pixel units of, constitute a pixel unit, and N is a positive integer;
  • the plurality of pixel units and the plurality of light control units 202 are respectively arranged in an array;
  • the maximum length of a light control unit 202 is m times the length of a pixel unit; in the second direction, the width of a light control unit 202 is n times the width of a pixel unit; m and n are both Positive integer. That is, the maximum length L1 of a light control unit 202 in the first direction is equal to the sum of the lengths of m consecutively arranged pixel units; the width L2 of a light control unit 202 in the second direction is equal to n consecutively arranged pixel units 6 The sum of the widths.
  • each light control unit 202 corresponds to m*n consecutively arranged pixel units 6 (ie, continuous m columns and n rows of pixel units 6), for example, in the direction perpendicular to the display surface of the display device, each The starting position and ending position of each light control unit 202 are also the starting position and ending position of the corresponding combination of m*n consecutively arranged pixel units.
  • embodiments of the present disclosure provide a display device, including: the above-mentioned liquid crystal display panel.
  • the display device can be applied to any products or components with display functions such as mobile phones, tablet computers, televisions, monitors, notebook computers, digital photo frames, and navigators. Since the principle of solving the problem of the display device is similar to that of the above-mentioned liquid crystal display panel, the implementation of the display device can refer to the implementation of the above-mentioned liquid crystal display panel, and the repetition will not be repeated.
  • the embodiments of the present disclosure provide another liquid crystal display panel, as shown in FIG. 23, including: a laminated liquid crystal display structure and a liquid crystal light control structure;
  • the liquid crystal display structure includes: a first gate line (not shown in the figure) extending along a first direction, and a first shading line 2301, the first gate line and the first shading line 2301 overlap in a direction perpendicular to the liquid crystal display panel ;
  • the liquid crystal light control structure includes: a second grid line (not shown in the figure) extending along a first direction, and a second shading line 2302, the second grid line and the second shading line 2302 are in a direction perpendicular to the liquid crystal display panel Overlap, the second grid line is a broken line;
  • the first orthographic projection of the first shading line 2301 in the direction perpendicular to the liquid crystal display panel and the second orthographic projection of the second shading line 2302 in the direction perpendicular to the liquid crystal display panel at least partially overlap;
  • the liquid crystal display panel further includes a light scattering structure 300 located in the area S enclosed by the first orthographic projection and the second orthographic projection.
  • the light scattering structure 300 may be located in any film layer in the enclosed area S, or be added as an independent film layer at any position from top to bottom in the liquid crystal display panel, which is not limited here.
  • the first shading line 2301 is a part of the black matrix in the liquid crystal display structure 001; the second shading line 2302 is a part of the black matrix in the liquid crystal light control structure 002.
  • the first orthographic projection of the first shading line 2301 in the direction perpendicular to the liquid crystal display panel and the second shading line 2302 in the direction perpendicular to the liquid crystal display panel can diffuse the light emitted by the sub-pixel that induces the rainbow pattern phenomenon, thereby weakening the light emitted by the sub-pixel (for example, blue light) to a certain extent. Brightness, and then improve the rainbow pattern phenomenon.
  • the light scattering structure 300 may also be located at the first shading light 2301 perpendicular to the liquid crystal display panel.
  • the first orthographic projection and the second shading line 2302 in the direction perpendicular to the liquid crystal display panel are in other display areas outside the area enclosed by the second orthographic projection.
  • the light scattering structure 300 covers the display area of the liquid crystal display panel, so that the emitted light of each sub-pixel is evenly diffused, thereby improving the color uniformity of the liquid crystal display panel, thereby effectively improving or even eliminating the rainbow pattern phenomenon, and improving the display quality .
  • the first orthographic projection of the first shading line 2301 in the direction perpendicular to the liquid crystal display panel and the second shading line 2302 in the direction perpendicular to the liquid crystal display panel The shape of the area enclosed by the second orthographic projection is a triangle (as shown in FIG. 23) or a semicircle.
  • the shape of the area enclosed by the first orthographic projection of the first shading line 2301 in the direction perpendicular to the liquid crystal display panel and the second orthographic projection of the second shading line 2302 in the direction perpendicular to the liquid crystal display panel can also be other shapes.
  • the shape is specifically related to the orthographic projection shape of the second shading line 2302 in the direction perpendicular to the liquid crystal display panel, and is not limited here.
  • the sub-pixel units of different colors in the liquid crystal display structure are transmitted through
  • the polarized light of the corresponding color can be uniformly diffused by the light scattering structure, that is to say, the light scattering structure has a uniform mixing effect on the polarized light of different colors to a certain extent, so it can effectively improve or even eliminate the rainbow pattern phenomenon. Improved display quality.

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Abstract

本公开公开的液晶显示面板及显示装置，因在第一偏光片和第二偏光片中的至少之一偏光片中具有光线散射结构，使得液晶显示结构中不同颜色的子像素单元透过的相应颜色的偏振光，可被光线散射结构均匀扩散，即光线散射结构对不同颜色的偏振光起到了均匀混光作用，因此，有效改善甚至消除了彩虹纹，提高了显示品质。

Description

液晶显示面板及显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种液晶显示面板及显示装置。
背景技术
液晶显示面板(Liquid Crystal Display，LCD)是一种重要的平板显示设备,目前在手机、车载、显示器、电视和公共显示等领域已得到广泛的应用。并且随着液晶显示面板的普遍使用和尺寸的增大，越来越多的人使用液晶显示面板来看电影、玩游戏，这样对显示品质的关注也越来越大。
发明内容
本公开实施例提供了一种液晶显示面板，包括：
层叠设置的液晶显示结构和液晶光控结构；
第一偏光片，位于所述液晶显示结构背离所述液晶光控结构一侧；
第二偏光片，位于所述液晶光控结构背离所述液晶显示结构一侧；
其中，所述第一偏光片和所述第二偏光片中的至少之一偏光片具有光线散射结构。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，还包括：位于所述液晶显示结构与所述液晶光控结构之间的第三偏光片；
所述第一偏光片、所述第二偏光片和所述第三偏光片中的至少之一偏光片具有光线散射结构。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，具有所述光线散射结构的偏光片中的膜层掺杂有透明颗粒构成所述光线散射结构。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，具有所述光线散射结构的偏光片包括：依次层叠设置的压敏胶层、第一光学 膜层、第一胶粘层、聚乙烯醇薄膜层、第二胶粘层和第二光学膜层；且所述压敏胶层位于所述第一光学膜层和所述液晶显示结构之间，或位于所述第一光学膜层和所述液晶光控结构之间；其中，
所述压敏胶层、所述第一光学膜层、所述第一胶粘层、所述聚乙烯醇薄膜层、所述第二胶粘层和所述第二光学膜层中的至少之一膜层掺杂有透明颗粒，掺杂有透明颗粒的膜层构成所述光线散射结构。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述第一偏光片的所述压敏胶层内掺杂有透明颗粒构成所述光线散射结构。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，具有所述光线散射结构的偏光片包括：依次层叠设置的压敏胶层、第一光学膜层、第一胶粘层、聚乙烯醇薄膜层、第二胶粘层和第二光学膜层；且所述压敏胶层位于所述第一光学膜层和所述液晶显示结构之间，或位于所述第一光学膜层和所述液晶光控结构之间；其中，
所述光线散射结构位于所述第二光学膜层背离所述第二胶粘层的一侧，和/或，所述光线散射结构位于所述压敏胶层与所述液晶显示结构之间，和/或，所述光线散射结构位于所述压敏胶层、所述第一光学膜层、所述第一胶粘层、所述聚乙烯醇薄膜层、所述第二胶粘层和所述第二光学膜层中至少两个相邻的膜层之间。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述光线散射结构包括：胶粘剂，以及分散于所述胶粘剂中的透明颗粒。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述光线散射结构位于所述第二光学膜层背离所述第二胶粘层的一侧；具有所述光线散射结构的偏光片还包括：位于所述光线散射结构背离所述第二光学膜层一侧的透明保护膜。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述光线散射结构为由透明颗粒构成的膜层。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中， 所述光线散射结构的一侧与所述第一胶粘层或所述第二胶粘层接触；
所述具有光线散射结构的偏光片还包括：与所述光线散射结构的另一侧接触的第三胶粘层。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述光线散射结构的厚度至少为纳米级。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，具有所述光线散射结构的偏光片的雾度值为5％～100％。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，具有所述光线散射结构的偏光片的雾度值为40％～80％。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述透明颗粒的直径为纳米级。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述透明颗粒的材质为亚克力或二氧化硅。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述第一光学膜层和所述第二光学膜层中的至少之一光学膜层的材质为三醋酸纤维素、聚对苯二甲酸乙二醇酯、丙烯酸或环烯烃聚合物。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述第一偏光片的所述第一光学膜，所述第二偏光片的所述第一光学膜和所述第二光学膜，以及所述第三偏光片的所述第一光学膜的材质为三醋酸纤维素；且所述第一偏光片的所述第二光学膜和所述第三偏光片的所述第二光学膜的材质分别为聚对苯二甲酸乙二醇酯、丙烯酸或环烯烃聚合物。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述压敏胶层内掺杂有透明颗粒构成所述光线散射结构，具有所述光线散射结构的偏光片还包括：
位于所述压敏胶层背离所述第一光学膜层一侧的第四胶粘层，以及位于所述第三胶粘层与所述压敏胶层之间的第三光学膜层。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中， 所述液晶光控结构包括：多条沿相互交叉的第一方向和第二方向延伸的信号线，所述信号线为折线走线。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述液晶显示结构包括：沿所述第一方向延伸的栅线，以及第一遮光线，所述栅线与所述第一遮光线在垂直于所述液晶显示面板的方向上重叠；
所述液晶光控结构包括：第二遮光线，沿所述第一方向延伸的所述信号线与所述第二遮光线在垂直于所述液晶显示面板的方向上重叠；
所述第一遮光线的宽度与所述第二遮光线的宽度之比为2.5～4。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述第一遮光线的宽度为100μm～120μm，所述第二遮光线的宽度为30μm～40μm。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述液晶光控结构还包括：由所述信号线限定出的多个光控单元；
所述液晶显示结构包括多条沿相互交叉的所述第一方向和所述第二方向延伸的网格线，所述网格线限定出多个子像素单元，沿所述第一方向连续排列的N个所述子像素单元构成一个像素单元，N为正整数；
多个所述像素单元和所述多个光控单元分别呈阵列排布；
沿所述第一方向，一个所述光控单元的最大长度是一个所述像素单元的长度的m倍；沿所述第二方向，一个所述光控单元的宽度是一个所述像素单元的宽度的n倍；m和n均为正整数。
本公开实施例提供了一种显示装置，包括：上述液晶显示面板和背光源。
本公开实施例提供了一种液晶显示面板，包括：层叠设置的液晶显示结构和液晶光控结构；
所述液晶显示结构包括：沿第一方向延伸的第一栅线，以及第一遮光线，所述第一栅线与所述第一遮光线在垂直于所述液晶显示面板的方向上重叠；
所述液晶光控结构包括：沿所述第一方向延伸的第二栅线，以及第二遮光线，所述第二栅线与所述第二遮光线在垂直于所述液晶显示面板的方向上 重叠，所述第二栅线为折线走线；
所述第一遮光线在垂直于所述液晶显示面板的方向上的第一正投影与所述第二遮光线在垂直于所述液晶显示面板的方向上的第二正投影之间至少部分交叠；
所述液晶显示面板还包括：位于所述第一正投影与所述第二遮正投影围成区域内的光线散射结构。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述光线散射结构，还位于所述第一正投影与所述第二正投影围成区域之外的其他显示区域内。
在一种可能的实现方式中，在本公开实施例提供的上述液晶显示面板中，所述第一正投影与所述第二正投影围成区域的形状为三角形或半圆形。
附图说明
图1为相关技术中彩虹纹的原理示意图；
图2、图3、图4、图5、图6、图7、图8、图9、图10、图11、图12、图13、图14、图15、图16、图17、图18、图19和图20分别为本公开实施例提供的一种液晶显示面板的剖面结构示意图；
图21和图22分别为本公开实施例提供的液晶光控结构的俯视结构示意图；
图23为本公开实施例提供的另一种液晶显示面板的俯视结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其它实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“内”、“外”、“上”、“下”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
相关技术中，液晶显示面板包括液晶显示结构以及背光单元。通过结合局域调光技术(Local Dimming，LD)来控制背光单元，可提升液晶显示面板的显示画质。一般地，局域调光技术是将整个背光单元分割为多个可单独驱动的背光分区(Block)，每个背光分区包括一个或多个LED。根据显示画面不同部分需要显示的灰阶而自动调整与这些部分对应的背光分区的LED的驱动电流，实现背光单元中每个分区的亮度的单独调节，从而可以提升显示画面的对比度。
但是局域调光技术适用于直下式背光单元，且作为光源的LED例如均匀分布于整个背板。为了在例如侧入式背光单元使用局域调光技术，需要在液晶显示面板和侧入式背光单元之间增加液晶光控结构，该液晶光控结构可控制预定区域中的透光率，对于液晶显示结构中画面亮度(灰阶)较高部分，液晶光控结构的相应区域的透光率也高，允许来自背光单元的更多光通过，对于液晶显示结构中画面亮度较低的部分，液晶光控结构的相应区域的透光率也低，允许来自背光单元的较少光通过，从而达到提高显示画面的对比度，增强显示画质的目的。另外，直接在直下式背光源上形成直下式背光单元的情况下，背光单元的划分难以达到较高的密度(单位面积下背光单元的个数)和精度。当对液晶光控结构中光控单元的划分密度和精度要求较高时，利用液晶光控结构能够实现这一要求，并且液晶光控结构的制作工艺易于实现。
具体而言，包括液晶显示结构和液晶光控结构的液晶显示面板为双层结 构(Dual Cell)，且在液晶显示结构和液晶光控结构中分别含有一层BM，然而，层叠(Overlay)设置的两层BM的网格图案相近，容易产生摩尔纹。为了避免摩尔纹不良，液晶显示结构与液晶光控结构的BM设计不同，其中液晶显示结构的BM(图1中黑色长条)为直线型，液晶光控结构的BM(图1中黑色折线)为折线形状，由此使得液晶显示结构中的BM与液晶光控结构中的BM不具有相同或相似的图案，从而使人眼感受不到摩尔纹，达到消除或改善摩尔纹的效果。
然而，如图1所示，液晶光控结构中折线形状的BM对不同子像素的遮挡程度不同；具体表现为：位于液晶光控结构中折线形状的BM与液晶显示结构内的BM交叠处的子像素被折线形状的BM遮挡较少。因此，该子像素的开口率相对较大，液晶显示面板进行显示时会更多地呈现出该子像素的颜色。但是，液晶光控结构中折线形状的BM与液晶显示结构内的BM层叠设置，导致在不同视角下观看到折线形状的BM对液晶显示结构内的子像素的遮挡情况不同；例如，在图1中α视角下，折线形状的BM对G子像素遮挡较少，液晶显示面板进行显示时会更多地呈现出G子像素的颜色；而在β视角下，折线形状的BM对R子像素遮挡较少，液晶显示面板进行显示时会更多地呈现出R子像素的颜色。基于此，液晶显示面板会呈现出彩虹纹现象。
需要说明的是，图1仅示例性地给出了RGB三种颜色的子像素，在具体实施时，还可以包括例如白色子像素W、黄色子像素Y或其他颜色的子像素，在此不做限定。
针对相关技术中存在的彩虹纹的现象，本公开实施例提供了一种液晶显示面板及显示装置。
下面结合附图，对本公开实施例提供的液晶显示面板及显示装置的具体实施方式进行详细地说明。附图中各膜层的厚度和形状不反映真实比例，目的只是示意说明本公开内容。
本公开提供的液晶显示面板，如图2至图20所示，可以包括：
层叠设置的液晶显示结构001和液晶光控结构002；
第一偏光片003，位于液晶显示结构001背离液晶光控结构002一侧；
第二偏光片004，位于液晶光控结构002背离液晶显示结构001一侧；
其中，第一偏光片003和第二偏光片004中的至少之一偏光片具有光线散射结构300。
在本公开实施例提供的液晶显示面板中，由于在第一偏光片003和第二偏光片004中的至少之一偏光片中具有光线散射结构300，使得液晶显示结构001中不同颜色的子像素单元透过的相应颜色的偏振光，可被光线散射结构300均匀扩散，也就是说，光线散射结构300在一定程度上对不同颜色的偏振光起到了均匀混光作用，因此，有效改善甚至消除了彩虹纹现象，提高了显示品质。
可选地，在本公开实施例提供的上述液晶显示面板中，如图2至图20所示，还可以包括：位于液晶显示结构001与液晶光控结构002之间的第三偏光片005；
为有效改善彩虹纹，可以设置第一偏光片003、第二偏光片004和第三偏光片005中的至少之一偏光片具有光线散射结构300。
为便于说明本公开的技术方案，下面仅以在第一偏光片003中具有光线散射结构300为例进行了详细说明。而在第二偏光片004和第三偏光片005中具有光线散射结构300的情况，可以参考在第一偏光片003中具有光线散射结构300的实施例，重复之处不再赘述。
可选地，在本公开实施例提供的上述液晶显示面板中，为在改善彩虹纹的同时，不增加新的膜层，以实现轻薄化设计，可在偏光片的膜层中掺杂透明颗粒来构成光线散射结构300。且为有效改善彩虹纹，可使透明颗粒均匀分布在偏光片的膜层中。可选地，透明颗粒的形状可以但不限于为球状、管状或块状。此外，为不影响相关技术中偏光片内各膜层的固有属性，透明颗粒的粒径为纳米级。透明颗粒的材质可以为亚克力、二氧化硅或本领域技术人员已知的其他透明材料，在此不做限定。
因此，在本公开实施例提供的上述液晶显示面板中，具有光线散射结构 300的偏光片可以包括：依次层叠设置的压敏胶层301、第一光学膜层302、第一胶粘层303、聚乙烯醇薄膜层304、第二胶粘层305和第二光学膜层306；且压敏胶层301位于第一光学膜层302和液晶显示结构001之间(如图3至图8所示)，或位于第一光学膜层302和液晶光控结构002之间；其中，
压敏胶层301、第一光学膜层302、第一胶粘层303、聚乙烯醇薄膜层304、第二胶粘层305和第二光学膜层306中的至少之一膜层掺杂有透明颗粒，掺杂有透明颗粒的膜层构成光线散射结构300。
也就是说，在本公开实施例提供的上述液晶显示面板中，可以在压敏胶层301中掺杂透明颗粒以构成光线散射结构300，如图3所示；或者，在第一光学膜层302中掺杂透明颗粒以构成光线散射结构300，如图4所示；或者，在第一胶粘层303中掺杂透明颗粒以构成光线散射结构300，如图5所示；或者，在聚乙烯醇薄膜层304中掺杂透明颗粒以构成光线散射结构300，如图6所示；或者，在第二胶粘层305中掺杂透明颗粒以构成光线散射结构300，如图7所示；或者，在第二光学膜层306中掺杂透明颗粒以构成光线散射结构300，如图8所示；或者，在不冲突的条件下，可将图3至图8中的实施方式进行任意组合，即为有效改善彩虹纹现象，可以设置在偏光片的多个膜层中均掺杂有透明颗粒。
可选地，在本公开实施例提供的上述液晶显示面板中，因背光自液晶显示结构001中的各子像素单元射出后会依次经过第一偏光片003的各膜层，并且出射光在第一偏光片003中与各子像素单元距离越近的膜层中的出射角度越小，使得光线散射结构300可以更好地对出射光进行均匀扩散，以更有效地改善彩虹纹现象。基于此，以及节约成本的目的，如图3所示，可以仅在第一偏光片003的压敏胶层301内掺杂有透明颗粒构成光线散射结构300。
可选地，在本公开实施例提供的上述液晶显示面板中，为取得改善甚至消除彩虹纹现象的效果，光线散射结构300不仅可以为上述偏光片中掺杂有透明颗粒的膜层，还可以为一在偏光片内新增加的膜层，具体地，具有光线散射结构的偏光片包括：依次层叠设置的压敏胶层301、第一光学膜层302、 第一胶粘层303、聚乙烯醇薄膜层304、第二胶粘层305和第二光学膜层306；且压敏胶层301位于第一光学膜层302和液晶显示结构001之间(如图9至图19所示)，或位于第一光学膜层302和液晶光控结构002之间；其中，
光线散射结构300可以位于第二光学膜层306背离第二胶粘层305的一侧，和/或，光线散射结构300可以位于压敏胶层301与液晶显示结构001之间，和/或，光线散射结构300可以位于压敏胶层301、第一光学膜层302、第一胶粘层303、聚乙烯醇薄膜层304、第二胶粘层305和第二光学膜层306中至少两个相邻的膜层之间。
具体而言，在本公开实施例提供的上述液晶显示面板中，光线散射结构300可以位于第二光学膜层306背离第二胶粘层305的一侧，如图9所示；或者，光线散射结构300可以位于压敏胶层301与液晶显示结构001之间，如图10所示；或者，光线散射结构300可以位于压敏胶层301与第一光学膜层302之间，如图11所示；或者，光线散射结构300可以位于第一光学膜层302与第一胶粘层303之间，如图12所示；或者，光线散射结构300可以位于第一胶粘层303与聚乙烯醇薄膜层304之间，如图13所示；或者，光线散射结构300可以位于聚乙烯醇薄膜层304与第二胶粘层305之间，如图14所示；或者，光线散射结构300可以位于第二胶粘层305与第二光学膜层306之间，如图15所示；或者，在不冲突的情况下，可将图9至图15的实施例进行任意结合。可以理解的是，为获得较好的改善彩虹纹的效果，在不冲突的情况下，还可以将图3至图15的实施例进行任意结合。
值得注意的是，针对图9中光线散射结构300作为单独的一个膜层位于第二光学膜层306背离第二胶粘层305的一侧的情况：在具体实施时，既可以如上所述将光线散射结构300作为偏光片的一部分；也可以将光线散射结构300视为独立于偏光片之上的一个部件，在此不做限定。同理，针对图10中光线散射结构300位于压敏胶层301与液晶显示结构001之间的情况：在具体实施时，既可以如上所述将光线散射结构300作为偏光片的一部分；也可以将光线散射结构300视为液晶显示结构001与偏光片之间的一个孤立部 件，在此也不做限定。
可选地，在本公开实施例提供的上述液晶显示面板中，在光线散射结构300为一新增的膜层时，光线散射结构300可以包括：胶粘剂，以及分散于胶粘剂中的透明颗粒；或者，光线散射结构300还可以为由透明颗粒构成的膜层。在具体实施时，可采用挤出工艺或相关技术中其他成膜工艺来制作由透明颗粒构成的光线散射结构300。
可选地，在本公开实施例提供的上述液晶显示面板中，在光线散射结构300包括胶粘剂，以及分散于胶粘剂中的透明颗粒时，为避免产品使用过程中，光线散射结构300与应用环境中的其他物品粘连在一起，影响显示效果，如图8所示，具有光线散射结构300的偏光片还可以包括：位于光线散射结构300背离第二光学膜层306一侧的透明保护膜307。
可选地，在本公开实施例提供的上述液晶显示面板中，为固定光线散射结构300，在光线散射结构300为由透明颗粒构成的膜层，且光线散射结构300的一侧与第一胶粘层303或第二胶粘层305接触的条件下；
具有光线散射结构300的偏光片还可以包括：与光线散射结构300的另一侧接触的第三胶粘层308，如图16至图19所示。可选地，在本公开实施例提供的上述液晶显示面板中，为有效改善彩虹纹，光线散射结构300的厚度至少为纳米级。具体地，在光线散射结构300为一新增的膜层时，光线散射结构300的厚度在纳米级以上；在偏光片中的膜层掺杂透明颗粒构成光线散射结构300时，光线散射结构300的厚度与相关技术中的偏光片未掺杂透明颗粒前的相应膜层厚度相同或相近。
可选地，在本公开实施例提供的上述液晶显示面板中，具有光线散射结构300的偏光片的雾度值可以为5％～100％，例如25％、20％、55％或60％，以此实现对彩虹纹的有效改善。
可选地，在本公开实施例提供的上述液晶显示面板中，光线散射结构300的雾度值较低(例如5％)的情况下对彩虹纹的改善效果不太好；较高的情况下(例如100％)，虽然可以有效改善彩虹纹，但会影响液晶显示面板的透过 率。因此，为兼顾改善彩虹纹现象和透过率，具有光线散射结构300的偏光片的雾度值可以为40％～80％，例如60％。
相应地，针对本公开实施例提供的上述液晶显示面板，表1给出了在第一偏光片003，第三偏光片005，第一偏光片003和第三偏光片005构成的组合，以及第二偏光片004和第三偏光片005构成的组合中设置光线散射结构300后改善彩虹纹的相关数据。
其中，表1中类型A代表光线散射结构300设置在第二光学膜306背离第二胶粘层305的一侧，类型B代表光线散射结构300为掺杂有透明颗粒的压敏胶层301。雾度值代表具有光线散射结构300的偏光片的雾度值。雾度(haze)是偏离入射光2.5°角以上的透射光强占总透射光强的百分数，通俗来讲，雾度的概念可理解为对光线进行散射的能力。在本公开中因纳米级透明颗粒的体积和质量可以达到被忽略的程度，因此，可以雾度值来考量光线散射结构300内包含透明颗粒的多少，雾度值越大，所含透明颗粒越多。彩虹纹的级别L值越小表示彩虹纹越不明显。
由表1可以看出，光线散射结构300越靠近液晶显示结构001的表面，对彩虹纹的改善效果越好，具体表现为表格中彩虹纹的级别L值越小。同时可以对比看出，相较于光线散射结构300设置在第二光学膜306背离第二胶粘层305的一侧的类型A，光线散射结构300为掺杂有透明颗粒的压敏胶层301的类型B时，彩虹纹改善效果较好。并且，在第一偏光片003的压敏胶层301内掺杂有透明颗粒所构成的雾度值分别为60％、55％和40％的光线散射结构300中，雾度值越高的光线散射结构300对彩虹纹的改善效果越好。此外，在第一偏光片003的压敏胶层301内掺杂有透明颗粒所构成的雾度值为60％的光线散射结构300，不但可明显改善彩虹纹现象，而且对比度也较高。
表1
Figure PCTCN2019103411-appb-000001
Figure PCTCN2019103411-appb-000002
可选地，在本公开实施例提供的上述液晶显示面板中，第一光学膜层302和第二光学膜层306中的至少之一光学膜层的材质可以为三醋酸纤维素(TAC)、聚对苯二甲酸乙二醇酯(PET)、丙烯酸(Acrylic)或环烯烃聚合物，在此不做限定。
可选地，在本公开实施例提供的上述液晶显示面板中，为保证偏振片的起偏效果和耐候性，第一偏光片003的第一光学膜302，第三偏光片005的第一光学膜302和第二光学膜306，以及第二偏光片004的第一光学膜302的材质为三醋酸纤维素；且第一偏光片003的第二光学膜306和第二偏光片004的第二光学膜306的材质分别为聚对苯二甲酸乙二醇酯、丙烯酸或环烯烃聚合物。
可以理解的是，相关技术中，为便于偏光片的存储和运输，一般在压敏胶层301背离第一光学膜302的一侧设置有离型膜。在将偏光片具体应用于终端产品时，会将离型膜撕掉，并通过压敏胶层301与液晶显示结构001或液晶光控结构002进行贴合。而在压敏胶层301内掺杂有透明颗粒构成光线 散射结构300时，压敏胶层301因掺杂有透明颗粒使得其黏性增大，以致在将离型膜撕掉的同时可能会对压敏胶层301造成损坏，如此则会弱化甚至消除光线散射结构300改善彩虹纹的功能，使得偏光片成为废片。
因此，为增强偏光片维修时的可易撕除(rework)性，可选地，在本公开实施例提供的上述液晶显示面板中，压敏胶层301内掺杂有透明颗粒构成光线散射结构300时，具有光线散射结构300的偏光片还可以包括：
位于压敏胶层301背离第一光学膜层302一侧的第四胶粘层309，以及位于第三胶粘层307与压敏胶层301之间的第三光学膜层310，如图20所示。
由此，在将偏光片与液晶显示结构001或液晶光控结构002进行贴附之前，在离型膜与掺杂有透明颗粒的压敏胶层301构成的光线散射结构300之间存在层叠设置的第三胶粘层307和第三光学膜层310，使得在将离型膜撕掉的过程中，通过第三光学膜层310实现了对由掺杂有透明颗粒的压敏胶层301构成的光线散射结构300的保护；并且在将离型膜撕掉后，通过第四胶粘层309实现了偏光片与液晶显示结构001或液晶光控结构002之间的贴附。因此，增强了偏光片维修时的可易撕除性，节约了成本。
可选地，在本公开实施例提供的上述液晶显示面板中，第三光学膜层310中的材质可以为三醋酸纤维素(TAC)、聚对苯二甲酸乙二醇酯(PET)、丙烯酸(Acrylic)或环烯烃聚合物，在此不做限定。并且，在实际应用中第三光学膜310宜采用三醋酸纤维素(TAC)制作。
需要说明的是，在本公开实施例提供的上述液晶显示面板中，第一胶粘层303、第二胶粘层305、第三胶粘层308和第四胶粘层309的材质可以为紫外线(UV)胶、水胶、压敏胶等透光性较好的黏着剂，在此不做限定。
可选地，在本公开实施例提供的上述液晶显示面板中，如图21和图22所示，液晶光控结构002包括：多条沿相互交叉的第一方向和第二方向延伸的信号线201，信号线为折线走线。由于在第一方向和第二方向延伸的信号线均为走线折线，使得第一方向和第二方向延伸的信号线构成的网格，与液晶显示结构001中的栅线和数据线构成的网格不具有相同或相似的图案，因此， 可以有效地提高消除摩尔纹的效果，并且结构简单，便于制作。基于此，本公开实施例提供的液晶显示面板可以在控制入射至液晶显示结构001的背光的方向或强弱的同时，无需额外增加专门用于消除摩尔纹的膜层而达到较好的消除摩尔纹的效果。
可选地，在本公开实施例提供的上述液晶显示面板中，液晶显示结构001包括：沿第一方向延伸的栅线，以及第一遮光线，栅线与第一遮光线在垂直于液晶显示面板的方向上重叠；
液晶光控结构002包括：第二遮光线，沿第一方向延伸的信号线与第二遮光线在垂直于液晶显示面板的方向上重叠；
为有效消除摩尔纹，第一遮光线的宽度与第二遮光线的宽度之比为2.5～4。
可选地，在本公开实施例提供的上述液晶显示面板中，第一遮光线的宽度为100μm～120μm，第二遮光线的宽度为30μm～40μm。
需要说明的是，第一遮光线为液晶显示结构001内黑矩阵的一部分；第二遮光线为液晶光控结构002内黑矩阵的一部分。
可选地，在本公开实施例提供的上述液晶显示面板中，如图21和图22所示，液晶光控结构002还包括：由信号线201限定出的多个光控单元202；
液晶显示结构001包括多条沿相互交叉的第一方向和第二方向延伸的网格线(具体可以为栅线和数据线)，网格线限定出多个子像素单元，沿第一方向连续排列的N个子像素单元构成一个像素单元，N为正整数；
多个像素单元和多个光控单元202分别呈阵列排布；
沿第一方向，一个光控单元202的最大长度是一个像素单元的长度的m倍；沿第二方向，一个光控单元202的宽度是一个像素单元的宽度的n倍；m和n均为正整数。即一个光控单元202在第一方向上的最大长度L1等于m个连续排列的像素单元的长度之和；一个光控单元202在第二方向上的宽度L2等于n个连续排列的像素单元6的宽度之和。由此允许一个光控单元202与m*n个连续排列的像素单元6(即，连续的m列和n行像素单元6)对应，例如，在垂直于显示装置的显示面的方向上，每个光控单元202起始位置和终止位 置也为相应的m*n个连续排列的像素单元这一组合的起始位置和终止位置。
基于同一发明构思，本公开实施例提供了一种显示装置，包括：上述液晶显示面板。该显示装置可以应用于手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。由于该显示装置解决问题的原理与上述液晶显示面板相似，因此该显示装置的实施可以参见上述液晶显示面板的实施，重复之处不再赘述。
基于同一发明构思，本公开实施例提供了另一种液晶显示面板，如图23所示，包括：层叠设置的液晶显示结构和液晶光控结构；
液晶显示结构包括：沿第一方向延伸的第一栅线(图中未示出)，以及第一遮光线2301，第一栅线与第一遮光线2301在垂直于液晶显示面板的方向上重叠；
液晶光控结构包括：沿第一方向延伸的第二栅线(图中未示出)，以及第二遮光线2302，第二栅线与第二遮光线2302在垂直于液晶显示面板的方向上重叠，第二栅线为折线走线；
第一遮光线2301垂直于液晶显示面板的方向上的第一正投影与第二遮光线2302在垂直于液晶显示面板的方向上的第二正投影之间至少部分交叠；
液晶显示面板还包括：位于第一正投影与第二正投影围成区域S内的光线散射结构300。
需要说明的是，光线散射结构300可以位于围成区域S内的任一膜层中，或作为独立的膜层增设在液晶显示面板内自上而下的任意位置，在此不做限定。此外，第一遮光线2301为液晶显示结构001内黑矩阵的一部分；第二遮光线2302为液晶光控结构002内黑矩阵的一部分。
在本公开实施例提供的上述液晶显示面板中，通过位于第一遮光线2301在垂直于液晶显示面板的方向上的第一正投影与第二遮光线2302在垂直于液晶显示面板的方向上的第二正投影围成区域S内的光线散射结构300，可将诱发彩虹纹现象的子像素所发射光线进行扩散，从而在一定程度上，弱化了该子像素所发射光线(例如蓝色光线)的明度，进而改善了彩虹纹现象。
可选地，在本公开实施例提供的上述液晶显示面板中，为了提升彩虹纹的改善效果，如图23所示，光线散射结构300，还可以位于第一遮光线2301在垂直于液晶显示面板的方向上的第一正投影与第二遮光线2302在垂直于液晶显示面板的方向上的第二正投影围成区域之外的其他显示区域内。也就是说，光线散射结构300覆盖液晶显示面板的显示区域，以使得各子像素的出射光线被均匀扩散，从而提高液晶显示面板的色彩均一性，进而有效改善甚至消除彩虹纹现象，提高显示品质。
可选地，在本公开实施例提供的上述液晶显示面板中，第一遮光线2301在垂直于液晶显示面板的方向上的第一正投影与第二遮光线2302在垂直于液晶显示面板的方向上的第二正投影围成区域的形状为三角形(如图23所示)或半圆形。当然，第一遮光线2301在垂直于液晶显示面板的方向上的第一正投影与第二遮光线2302在垂直于液晶显示面板的方向上的第二正投影围成区域的形状还可以为其他形状，具体与第二遮光线2302在垂直于液晶显示面板的方向上的正投影形状有关，在此不做限定。
本公开实施例提供的液晶显示面板及显示装置，由于在第一偏光片和第二偏光片中的至少之一偏光片中具有光线散射结构，使得液晶显示结构中不同颜色的子像素单元透过的相应颜色的偏振光，可被光线散射结构均匀扩散，也就是说，光线散射结构在一定程度上对不同颜色的偏振光起到了均匀混光作用，因此，有效改善甚至消除了彩虹纹现象，提高了显示品质。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (26)

  1. 一种液晶显示面板，其中，包括：
    层叠设置的液晶显示结构和液晶光控结构；
    第一偏光片，位于所述液晶显示结构背离所述液晶光控结构一侧；
    第二偏光片，位于所述液晶光控结构背离所述液晶显示结构一侧；
    其中，所述第一偏光片和所述第二偏光片中的至少之一偏光片具有光线散射结构。
  2. 如权利要求1所述的液晶显示面板，其中，还包括：位于所述液晶显示结构与所述液晶光控结构之间的第三偏光片；
    所述第一偏光片、所述第二偏光片和所述第三偏光片中的至少之一偏光片具有光线散射结构。
  3. 如权利要求1或2所述的液晶显示面板，其中，具有所述光线散射结构的偏光片中的膜层掺杂有透明颗粒构成所述光线散射结构。
  4. 如权利要求3所述的液晶显示面板，其中，具有所述光线散射结构的偏光片包括：依次层叠设置的压敏胶层、第一光学膜层、第一胶粘层、聚乙烯醇薄膜层、第二胶粘层和第二光学膜层；且所述压敏胶层位于所述第一光学膜层和所述液晶显示结构之间，或位于所述第一光学膜层和所述液晶光控结构之间；其中，
    所述压敏胶层、所述第一光学膜层、所述第一胶粘层、所述聚乙烯醇薄膜层、所述第二胶粘层和所述第二光学膜层中的至少之一膜层掺杂有透明颗粒，掺杂有透明颗粒的膜层构成所述光线散射结构。
  5. 如权利要求4所述的液晶显示面板，其中，所述第一偏光片的所述压敏胶层内掺杂有透明颗粒构成所述光线散射结构。
  6. 如权利要求1或2所述的液晶显示面板，其中，具有所述光线散射结构的偏光片包括：依次层叠设置的压敏胶层、第一光学膜层、第一胶粘层、聚乙烯醇薄膜层、第二胶粘层和第二光学膜层；且所述压敏胶层位于所述第 一光学膜层和所述液晶显示结构之间，或位于所述第一光学膜层和所述液晶光控结构之间；其中，
    所述光线散射结构位于所述第二光学膜层背离所述第二胶粘层的一侧，和/或，所述光线散射结构位于所述压敏胶层与所述液晶显示结构之间，和/或，所述光线散射结构位于所述压敏胶层、所述第一光学膜层、所述第一胶粘层、所述聚乙烯醇薄膜层、所述第二胶粘层和所述第二光学膜层中至少两个相邻的膜层之间。
  7. 如权利要求6所述的液晶显示面板，其中，所述光线散射结构包括：胶粘剂，以及分散于所述胶粘剂中的透明颗粒。
  8. 如权利要求7所述的液晶显示面板，其中，所述光线散射结构位于所述第二光学膜层背离所述第二胶粘层的一侧；具有所述光线散射结构的偏光片还包括：位于所述光线散射结构背离所述第二光学膜层一侧的透明保护膜。
  9. 如权利要求6所述的液晶显示面板，其中，所述光线散射结构为由透明颗粒构成的膜层。
  10. 如权利要求9所述的液晶显示面板，其中，所述光线散射结构的一侧与所述第一胶粘层或所述第二胶粘层接触；
    具有所述光线散射结构的偏光片还包括：与所述光线散射结构的另一侧接触的第三胶粘层。
  11. 如权利要求1或2所述的液晶显示面板，其中，所述光线散射结构的厚度至少为纳米级。
  12. 如权利要求1或2所述的液晶显示面板，其中，具有所述光线散射结构的偏光片的雾度值为5％～100％。
  13. 如权利要求12所述的液晶显示面板，其中，具有所述光线散射结构的偏光片的雾度值为40％～80％。
  14. 如权利要求3、7或9所述的液晶显示面板，其中，所述透明颗粒的直径为纳米级。
  15. 如权利要求3、7或9所述的液晶显示面板，其中，所述透明颗粒的 材质为亚克力或二氧化硅。
  16. 如权利要求4或6所述的液晶显示面板，其中，所述第一光学膜层和所述第二光学膜层中的至少之一光学膜层的材质为三醋酸纤维素、聚对苯二甲酸乙二醇酯、丙烯酸或环烯烃聚合物。
  17. 如权利要求16所述的液晶显示面板，其中，所述第一偏光片的所述第一光学膜，所述第二偏光片的所述第一光学膜和所述第二光学膜，以及所述第三偏光片的所述第一光学膜的材质为三醋酸纤维素；且所述第一偏光片的所述第二光学膜和所述第三偏光片的所述第二光学膜的材质分别为聚对苯二甲酸乙二醇酯、丙烯酸或环烯烃聚合物。
  18. 如权利要求4所述的液晶显示面板，其中，所述压敏胶层内掺杂有透明颗粒构成所述光线散射结构，具有所述光线散射结构的偏光片还包括：
    位于所述压敏胶层背离所述第一光学膜一侧的第四胶粘层，以及位于所述第三胶粘层与所述压敏胶层之间的第三光学膜层。
  19. 如权利要求1或2所述的液晶显示面板，其中，所述液晶光控结构包括：多条沿相互交叉的第一方向和第二方向延伸的信号线，所述信号线为折线走线。
  20. 如权利要求19所述的液晶显示面板，其中，所述液晶显示结构包括：沿所述第一方向延伸的栅线，以及第一遮光线，所述栅线与所述第一遮光线在垂直于所述液晶显示面板的方向上重叠；
    所述液晶光控结构包括：第二遮光线，沿所述第一方向延伸的所述信号线与所述第二遮光线在垂直于所述液晶显示面板的方向上重叠；
    所述第一遮光线的宽度与所述第二遮光线的宽度之比为2.5～4。
  21. 如权利要求20所述的液晶显示面板，其中，所述第一遮光线的宽度为100μm～120μm，所述第二遮光线的宽度为30μm～40μm。
  22. 如权利要求19所述的液晶显示面板，其中，所述液晶光控结构还包括：由所述信号线限定出的多个光控单元；
    所述液晶显示结构包括多条沿相互交叉的所述第一方向和所述第二方向 延伸的网格线，所述网格线限定出多个子像素单元，沿所述第一方向连续排列的N个所述子像素单元构成一个像素单元，N为正整数；
    多个所述像素单元和所述多个光控单元分别呈阵列排布；
    沿所述第一方向，一个所述光控单元的最大长度是一个所述像素单元的长度的m倍；沿所述第二方向，一个所述光控单元的宽度是一个所述像素单元的宽度的n倍；m和n均为正整数。
  23. 一种显示装置，其中，包括：如权利要求1-22任一项所述的液晶显示面板和背光源。
  24. 一种液晶显示面板，其中，包括：层叠设置的液晶显示结构和液晶光控结构；
    所述液晶显示结构包括：沿第一方向延伸的第一栅线，以及第一遮光线，所述第一栅线与所述第一遮光线在垂直于所述液晶显示面板的方向上重叠；
    所述液晶光控结构包括：沿所述第一方向延伸的第二栅线，以及第二遮光线，所述第二栅线与所述第二遮光线在垂直于所述液晶显示面板的方向上重叠，所述第二栅线为折线走线；
    所述第一遮光线在垂直于所述液晶显示面板的方向上的第一正投影与所述第二遮光线在垂直于所述液晶显示面板的方向上的第二正投影之间至少部分交叠；
    所述液晶显示面板还包括：位于所述第一正投影与所述第二正投影围成区域内的光线散射结构。
  25. 如权利要求24所述的液晶显示面板，其中，所述光线散射结构，还位于所述第一正投影与所述第二正投影围成区域之外的其他显示区域内。
  26. 如权利要求24或25所述的液晶显示面板，其中，所述第一正投影与所述第二正投影围成区域的形状为三角形或半圆形。
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