WO2014153865A1 - 显示面板及3d显示装置 - Google Patents

显示面板及3d显示装置 Download PDF

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Publication number
WO2014153865A1
WO2014153865A1 PCT/CN2013/077532 CN2013077532W WO2014153865A1 WO 2014153865 A1 WO2014153865 A1 WO 2014153865A1 CN 2013077532 W CN2013077532 W CN 2013077532W WO 2014153865 A1 WO2014153865 A1 WO 2014153865A1
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Prior art keywords
substrate
display panel
polarizer
alignment layer
electrode
Prior art date
Application number
PCT/CN2013/077532
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English (en)
French (fr)
Inventor
董天松
占红明
刘家安
朱载荣
郑英花
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京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 US14/348,409 priority Critical patent/US9423625B2/en
Publication of WO2014153865A1 publication Critical patent/WO2014153865A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/31—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers involving active parallax barriers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
    • G02B30/36—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using refractive optical elements, e.g. prisms, in the optical path between the images and the observer
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • 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
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133784—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by rubbing
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned

Definitions

  • Embodiments of the present invention relate to a display panel and a three-dimensional (3D) display device. Background technique
  • the commonly used grating 3D technology uses a TN-type grating structure, and its viewing angle is basically the same as that of a conventional Twisted Nematic (TN) display.
  • TN Twisted Nematic
  • the display screens that match the TN-type grating structure use a wide viewing angle display with wide viewing angle technology, such as plane conversion (IPS), fringe field switch (FFS), and ultra-dimensional switch (ADS) display.
  • IPS plane conversion
  • FFS fringe field switch
  • ADS ultra-dimensional switch
  • the transmission axes of the upper polarizer and the lower polarizer are perpendicular to each other, and the orientation directions of the upper alignment layer (such as the alignment layer on the color filter substrate) and the lower alignment layer (such as the alignment layer on the array substrate) are opposite.
  • the transmission axis of the lower polarizer is parallel to the line in which the orientation direction of the lower alignment layer is located.
  • the pixel electrodes are generally strip-shaped, and for the single domain mode (all strip-shaped pixel electrodes are parallel to each other), the strip-shaped pixel electrodes are parallel to the line in which the orientation direction of the lower alignment layer is located, and are parallel to the gate lines. Or vertical.
  • the angle ⁇ is usually at 7. ⁇ 11. .
  • These two display modes have some differences in the transmission angle of the polarizer, and generally differ by 45.
  • the angle is related to the orientation direction of the orientation layer of the panel with different wide viewing angles).
  • solid arrows indicate the initial alignment direction of the liquid crystal (i.e., the orientation direction of the alignment layer)
  • the dotted arrow indicates the transmission axis direction of the polarizer
  • the dotted line indicates the optical path direction.
  • the transmission direction of the polarizer of the exit surface of the wide viewing angle display is 45° from the direction of the transmission axis of the incident surface of the 3D grating.
  • the transmission axis direction of the 3D grating (ie, the 3D grating) is generally The direction in which the polarizer is attached, and the orientation direction of the alignment layer are rotated by about 45 degrees to match the optimum transmission axis direction on the exit side of the wide viewing angle display.
  • the angle of view of the 3D grating is deflected, which deviates from the optimal direction of the human eye (the optimal direction is generally 6).
  • the point direction that is, the front of the line of sight
  • Embodiments of the present invention can enable a wide viewing angle display panel to match a 3D raster, improving the visual angle characteristics of a raster 3D display.
  • An aspect of the invention provides a display panel, including: a first substrate, a first polarizer on the first substrate, a second substrate, and a second polarizer on the second substrate, located on the first substrate And a liquid crystal layer between the second substrate; and a pixel electrode, a common electrode, a first alignment layer, and a gate line formed on the first substrate; at least one of the pixel electrode and the common electrode is a comb
  • the electrode, the transmission axis of the first polarizer is parallel to a line in which the orientation direction of the first alignment layer is located, and the transmission axis of the first polarizer is perpendicular to the transmission axis of the second polarizer.
  • the straight line in which the orientation direction of the first alignment layer is located and the gate line are at a predetermined angle greater than 0° and less than 90°.
  • the predetermined included angle is 40° to 50°.
  • the predetermined included angle is 45°.
  • the pixel electrode is a comb electrode
  • the common electrode is a plate electrode
  • the comb-shaped pixel electrode is closer to the liquid crystal layer than the common electrode
  • the orientation direction of the comb-shaped pixel electrode and the first alignment layer is The line is parallel or has a straight line with the direction in which the orientation direction of the first alignment layer is located. ⁇ 11 ° angle.
  • the common electrode is a comb electrode
  • the pixel electrode is a plate electrode
  • the comb-shaped common electrode is closer to the liquid crystal layer than the pixel electrode
  • the orientation direction of the comb-shaped common electrode and the first alignment layer is The line is parallel or has a straight line with the direction in which the orientation direction of the first alignment layer is located. ⁇ 11 ° angle.
  • the pixel electrode and the common electrode are both comb electrodes, each of which is parallel to a line in which the orientation direction of the first alignment layer is located or a line in which the orientation direction of the first alignment layer is located. ⁇ 11 ° angle.
  • the display panel further includes: a second alignment layer formed on the second substrate, the orientation direction of the first alignment layer being opposite to the orientation direction of the second alignment layer.
  • Another aspect of the present invention provides a 3D display device comprising a twisted nematic 3D grating and the display panel according to any of the above, wherein the twisted nematic 3D grating is located on a light exiting side of the display panel.
  • a transmission axis of the second polarizer on the light exit side of the display panel is parallel to a transmission axis of the polarizer on the twisted nematic 3D grating light incident side.
  • FIG. 1 is a schematic diagram of a pixel structure in a display panel in the prior art
  • FIG. 2 is a schematic diagram of a matching structure of a display panel and a 3D grating in the prior art
  • FIG. 3 is a schematic diagram of a matching structure between a display panel and a 3D grating according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a pixel structure in a display panel according to an embodiment of the invention.
  • Words such as “connected” or “connected” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Upper”, “Down”, “Left”, “Right”, etc. are only used to indicate the relative positional relationship. When the absolute position of the object to be described is changed, the relative positional relationship may also change accordingly.
  • the display panel in this embodiment may be an IPS or ADS type wide viewing angle display panel, as shown in FIG. 3 .
  • the display panel 10 includes: a first substrate (not shown), a first polarizer 11 on the first substrate, a second substrate (not shown), and a second polarizer 12 on the second substrate. And a liquid crystal layer 15 between the first substrate and the second substrate.
  • the first substrate and the second substrate are disposed opposite to each other, and the liquid crystal cell is formed by, for example, a sealant.
  • the first polarizer 11 is formed, for example, on the outer side of the first substrate with respect to the liquid crystal layer 15, and the second polarizer 12 is formed on the outer side of the second substrate, for example, with respect to the liquid crystal layer 15.
  • the display panel further includes a plurality of pixel units formed over the first substrate, each of the pixel units including a pixel electrode, a common electrode, a first alignment layer, a gate line 1 and a data line 3.
  • the gate line 1 and the data line 3 intersect, for example, perpendicularly to each other.
  • the first alignment layer is coated, for example, on the inner side of the first substrate with respect to the liquid crystal layer 15, and the fine grooves in a certain direction are formed by, for example, a rubbing process.
  • At least one of the pixel electrode and the common electrode is a comb electrode 2.
  • the transmission axis of the first polarizer is parallel to the line in which the orientation direction of the first alignment layer is located, and the transmission axis of the first polarizer is perpendicular to the transmission axis of the second polarizer.
  • a second alignment layer is provided on the second substrate, the second alignment layer being coated, for example, on the inner side of the second substrate with respect to the liquid crystal layer 15, and the fine grooves in a certain direction are formed by, for example, a rubbing process.
  • the orientation direction of the second alignment layer on the second substrate in the wide viewing angle display panel 10 is opposite to the orientation direction of the first alignment layer on the first substrate.
  • the first substrate is an array substrate
  • the second substrate is an opposite substrate
  • the opposite substrate is, for example, a color filter substrate.
  • the straight line in which the orientation direction of the first alignment layer of the wide viewing angle display panel 10 is located is larger than 0 in the gate line 1 in the wide viewing angle display panel. Less than 90.
  • the predetermined angle is larger than 0 in the gate line 1 in the wide viewing angle display panel. Less than 90. The predetermined angle.
  • the orientation direction of the first alignment layer in the conventional wide viewing angle display panel is generally parallel or perpendicular to the direction of the gate line 1.
  • the angular relationship between the two polarizers of the light incident side and the light exiting side and the angular relationship of the orientation directions of the first polarizer 11 and the first alignment layer are parallel to each other.
  • the second polarizer and the gate line on the light exit side of the display panel are also greater than zero. Less than 90.
  • the angle of the. In order to secure the transmittance, the transmission axis of the first polarizer 11 is parallel to the line in which the orientation direction of the first alignment layer is located. Since the TN mode 3D grating and the wide viewing angle display panel generally have a transmission angle of 45.
  • the angle between the transmission axis of the second polarizer on the panel light exit side and the transmission axis of the polarizer on the 3D grating light incident side of the TN mode is less than 45°, that is, closer to parallel.
  • the predetermined included angle is 40. ⁇ 50. , for example 45. , making the two completely parallel.
  • the wide viewing angle display panel 10 of the present embodiment corresponds to the penetration of the polarizing plate (including the two polarizing plates 11, 12 on the light incident side and the light exit side).
  • the orientation direction of the over-axis direction and the alignment layer is rotated by a predetermined angle so that the second polarizer 12 on the light-emitting side of the wide-angle display panel 10 transmits light.
  • the transmission axis of the polarizer 21 on the light incident side of the axis and the TN mode of the 3D grating 20 is nearly parallel to match the optimum transmission axis direction of the light incident side of the 3D grating 20 of the TN mode as much as possible; Then, the optimum transmission axis direction of the incident side of the 3D grating 20 of the TN mode is completely matched. Since the present embodiment does not change the transmission axis direction of the polarizer of the TN mode 3D grating 20, the viewing angle of the display device formed by the wide viewing angle display panel 10 and the TN mode 3D grating 20 does not deviate from the best viewed by the human eye. The direction makes the 3D display device still achieve better visual angle characteristics.
  • the comb electrode and the gate line in the wide viewing angle display panel 10 Since the orientation direction of the polarizer and the alignment layer of the wide viewing angle display panel 10 is changed, if the comb electrode and the gate line in the wide viewing angle display panel maintain the original tilt angle, the difference between the edge electric field direction and the initial direction of the liquid crystal is large. , causing the liquid crystal orientation to be disordered, affecting the display effect. Therefore, further, the comb electrode structure in the wide viewing angle display panel is also adjusted accordingly.
  • the common electrode is a plate electrode, the comb-shaped pixel electrode is closer to the liquid crystal layer than the common electrode, and the comb-shaped pixel electrode is parallel to the line of the orientation direction of the first alignment layer or the first
  • the straight line in which the orientation direction of the alignment layer is located is at an angle of 7° to 11°.
  • the common electrode is a comb electrode, the pixel electrode is a plate electrode, the comb-shaped common electrode is closer to the liquid crystal layer than the pixel electrode, and the comb-shaped common electrode is parallel to the line in which the orientation direction of the first alignment layer is located or the first orientation
  • the straight line in which the orientation direction of the layer is located is 7. ⁇ 11. Angle.
  • both the pixel electrode and the common electrode are comb electrodes, both are parallel to a line in which the orientation direction of the first alignment layer is located or an angle of 7° to 11° with a line in which the orientation direction of the first alignment layer is located.
  • the comb-shaped electrode 2 is parallel to the line in which the orientation direction of the first alignment layer (the direction of the arrow in FIG. 4) is located (single-domain mode) or is 7. ⁇ 11.
  • the angle, that is, the angle oc in Figure 4 is 7. ⁇ 11. (Single-domain mode or dual-domain mode, Figure 4 is a schematic diagram of the dual-domain mode).
  • the comb electrode 2 is adjusted in accordance with the orientation direction adjustment of the first alignment layer, so that the angle between the comb electrode 2 and the gate line 1 is zero. ⁇ 90. between.
  • the included angle is 40. ⁇ 50. , such as 45. ; Correct In the dual domain mode, the angle is, for example, 29° to 61°, such as 33° and 52°.
  • a plate electrode or a comb electrode below the dressing electrode 2 perpendicular to the direction of the paper) is not shown.
  • Embodiments of the present invention also provide a 3D display device including a TN mode 3D raster 20 and the above wide viewing angle display panel 10.
  • the 3D grating 20 of the TN mode is located on the light exit side of the wide viewing angle display panel 10.
  • the TN mode 3D grating 20 includes a first substrate (not shown), a first polarizer 21 on the first substrate, a second substrate (not shown), and a second substrate.
  • the first substrate and the second substrate are disposed opposite to each other, and the liquid crystal cell is formed by, for example, a sealant.
  • the first polarizer 21 is formed on the outer side of the first substrate with respect to the liquid crystal layer 25, for example, and the second polarizer 22 is formed on the outer side of the second substrate, for example, with respect to the liquid crystal layer 25.
  • a first alignment layer and a second alignment layer are respectively disposed on the first substrate and the second substrate, for example, coated on the inner sides of the first substrate and the second substrate with respect to the liquid crystal layer 25, respectively, and formed in a certain direction by, for example, a rubbing process Fine grooves.
  • the transmission axis of the first polarizer 21 is parallel to the line of the orientation direction of the first alignment layer
  • the transmission axis of the second polarizer 22 is parallel to the line of the orientation direction of the second alignment layer
  • the first polarizer 21 The transmission axis and the transmission axis of the second polarizer 22 are perpendicular to each other.
  • the second substrate serves as an array substrate
  • the first substrate serves as a counter substrate.
  • evenly spaced strip electrodes are formed on the first substrate, and evenly spaced strip electrodes are formed on the second substrate, and the strip electrodes of the first substrate and the strip electrodes of the second substrate are opposite to each other.
  • a voltage can be applied to the strip electrodes to control the orientation of the liquid crystal layer to form a grating (baffle).
  • the transmission axis of the second polarizer 12 on the light exit side of the display panel 10 is parallel to the transmission axis of the polarizer 21 on the light incident side of the twisted nematic 3D grating 20, so that the 3D grating 20 and the display panel 10 are fitted to each other.
  • the polarizer of the TN mode 3D grating 20 remains unchanged in the transmission axis direction, thereby ensuring the TN mode.
  • the best viewing angle characteristics of the 3D display device Preferably, the transmission axis of the second polarizer 12 on the light exit side of the wide viewing angle display panel 10 is parallel to the transmission axis of the polarizer 21 on the light incident side of the TN mode 3D grating 20, that is, the 3D grating matching the TN mode. The direction of the best transmission axis of the incident side of 20.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Geometry (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种显示面板（10），包括：第一基板、位于第一基板上的第一偏光片（11）、第二基板和位于第二基板上的第二偏光片（12）、以及位于第一基板和第二基板之间的液晶层（15），还包括形成在第一基板之上的像素电极、公共电极、第一取向层和栅线（1），像素电极和公共电极两者至少之一为梳状电极（2），第一偏光片（11）的透过轴与第一取向层的取向方向所在的直线平行，第一偏光片（11）的透过轴与第二偏光片（12）的透过轴垂直，第一取向层的取向方向所在的直线与栅线呈大于0°小于90°的预定夹角。该显示面板可达到较好的3D视觉角度特性。

Description

显示面板及 3D显示装置 技术领域
本发明的实施例涉及一种显示面板及三维（3D )显示装置。 背景技术
目前普遍使用的光栅式（ barrier )棵眼 3D技术， 大多采用 TN型光栅结 构， 其视角与普通扭曲向列型（ Twisted Nematic, TN )显示屏的视角基本相 同。
但是， 与 TN型光栅结构匹配的显示屏多采用广视角技术的广视角显示 屏， 如平面转换 ( IPS ) 、 边缘场开关（FFS ) 、 超维开关（ADS )显示屏。 广视角显示屏中， 上偏光片和下偏光片的透过轴相互垂直， 上取向层（如彩 膜基板上的取向层）和下取向层 (如阵列基板上的取向层）的取向方向相反， 下偏光片的透过轴与下取向层的取向方向所在的直线平行。 广视角显示屏的 像素结构中像素电极通常为条状， 对于单畴模式（所有条状像素电极相互平 行） ， 条状像素电极与下取向层的取向方向所在的直线平行， 且与栅线平行 或垂直。 对于双畴模式， 如图 1所示， 下取向层的取向方向 （图 1中箭头所 示）所在的直线与栅线 1平行， 条状像素电极 2与下取向层的取向方向所在 的直线所呈的夹角 α通常在 7。~ 11。。
这两种显示模式（ΤΝ型与广视角技术）在偏光片透射角度上存在着一 定差异， 一般情况下相差 45。（该角度随不同的广视角显示面板的取向层的 取向方向有关） 。 如图 2所示， 实线箭头表示液晶初始取向方向 （即取向层 的取向方向） ， 虚线箭头表示偏光片的透过轴方向， 点线表示光路方向。 由 图 2可见， 广视角显示屏的出射面的偏光片透过轴方向与 3D光栅的入射面 的偏光片透过轴方向相差 45°。
为了使 3D光栅匹配广视角显示屏部分， 即使广视角显示面板的上偏光 片透光轴应该和 3D光栅的下偏光片的透光轴平行，一般将 3D光栅的透过轴 方向（即 3D光栅的偏光片贴附方向， 以及取向层取向方向）进行 45度左右 旋转， 以匹配广视角显示屏出射侧的最佳透射轴方向。 但是， 旋转后会造成 3D 光栅的视角随之偏转， 偏离人眼观看的最佳方向 （该最佳方向一般是 6 点方向， 即视线正前方） ， 从而造成 3D显示的视角特性较差。 发明内容
本发明的实施例可使得广视角显示面板匹配 3D光栅，提高光栅式 3D显 示的视觉角度特性。
本发明的一个方面提供了一种显示面板， 包括： 第一基板、 位于第一基 板上的第一偏光片、 第二基板和位于第二基板上的第二偏光片、 位于所述第 一基板和第二基板之间的液晶层、以及形成在所述第一基板之上的像素电极、 公共电极、 第一取向层和栅线； 所述像素电极和公共电极两者至少之一为梳 状电极， 所述第一偏光片的透过轴与所述第一取向层的取向方向所在的直线 平行， 所述第一偏光片的透过轴与所述第二偏光片的透过轴垂直， 所述第一 取向层的取向方向所在的直线与所述栅线呈大于 0°小于 90°的预定夹角。
在一个示例中， 所述预定夹角为 40° ~ 50°。
在一个示例中， 所述预定夹角为 45°。
在一个示例中， 所述像素电极为梳状电极， 公共电极为板状电极， 梳状 的像素电极相对公共电极更靠近所述液晶层， 梳状的像素电极与第一取向层 的取向方向所在的直线平行或与第一取向层的取向方向所在的直线呈 7。 ~ 11°夹角。
在一个示例中， 所述公共电极为梳状电极， 像素电极为板状电极， 梳状 的公共电极相对像素电极更靠近所述液晶层， 梳状的公共电极与第一取向层 的取向方向所在的直线平行或与第一取向层的取向方向所在的直线呈 7。 ~ 11°夹角。
在一个示例中， 所述像素电极和公共电极均为梳状电极， 均与第一取向 层的取向方向所在的直线平行或与第一取向层的取向方向所在的直线呈 7。 ~ 11°夹角。
在一个示例中， 该显示面板还包括： 形成在第二基板上的第二取向层， 第一取向层的取向方向与第二取向层的取向方向相反。
本发明的另一个方面还提供了一种 3D显示装置，包括扭曲向列型 3D光 栅以及上述任一项所述的显示面板， 所述扭曲向列型 3D光栅位于所述显示 面板的出光侧。 在一个示例中， 所述显示面板光出射侧的所述第二偏光片的透过轴与所 述扭曲向列型 3D光栅光入射侧的偏光片的透过轴平行。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1是现有技术中的一种显示面板中像素结构示意图；
图 2是现有技术中的显示面板和 3D光栅的匹配结构示意图；
图 3是本发明实施例的一种显示面板与 3D光栅匹配结构示意图； 图 4是本发明实施例的一种显示面板中像素结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明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发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
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发明所属领 域内具有一般技能的人士所理解的通常意义。 本发明专利申请说明书以及权 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。 同样， "一个" 、 "一" 或者 "该"等类似词语也不表示数量限制， 而是表示存在至少一个。 "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。 "连接" 或者 "相连" 等类似的词语并非限定于物理的或者机械的连接， 而是可以包 括电性的连接， 不管是直接的还是间接的。 "上" 、 "下" 、 "左" 、 "右" 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。
本实施例中的显示面板可以为 IPS或 ADS型广视角显示面板， 如图 3 所示， 该显示面板 10包括： 第一基板（未示出）、 位于第一基板上的第一偏 光片 11、 第二基板（未示出）和位于第二基板上的第二偏光片 12、 以及位于 第一基板和第二基板之间的液晶层 15。
第一基板和第二基板彼此相对设置， 并通过例如封框胶形成液晶盒。 第 一偏光片 11相对于液晶层 15例如形成在第一基板的外侧； 第二偏光片 12 相对于液晶层 15例如形成在第二基板的外侧。
参见图 4, 该显示面板还包括形成在第一基板之上的多个像素单元， 每 个像素单元包括像素电极、 公共电极、 第一取向层、 栅线 1和数据线 3。 栅 线 1和数据线 3例如彼此垂直相交。 第一取向层例如涂覆在第一基板相对于 液晶层 15的内侧，并通过例如摩擦工艺形成沿一定方向的细沟槽。像素电极 和公共电极两者至少之一为梳状电极 2。 第一偏光片的透过轴与第一取向层 的取向方向所在的直线平行， 第一偏光片的透过轴与第二偏光片的透过轴彼 此垂直。
第二基板上还设有第二取向层， 该第二取向层例如涂覆在第二基板相对 于液晶层 15的内侧，并通过例如摩擦工艺形成沿一定方向的细沟槽。在该广 视角显示面板 10 中第二基板上的第二取向层的取向方向和第一基板上的第 一取向层的取向方向相反。
在该实施例中， 第一基板为阵列基板， 相应地第二基板为对置基板， 该 对置基板例如为彩膜基板。
为了使广视角显示面板 10的光出射侧的第二偏光片 12的透光轴和 TN 模式的 3D光栅光入射面的偏光片的透光轴接近于平行或平行， 在本实施例 中，使广视角显示面板 10的第一取向层的取向方向所在的直线与广视角显示 面板中的栅线 1呈大于 0。小于 90。的预定夹角。
比较而言， 现有的广视角显示面板中第一取向层的取向方向通常与栅线 1 的方向平行或垂直。 而在本实施例中， 由于光入射侧和光出射侧的两个偏 光片的彼此垂直的角度关系，及第一偏光片 11与第一取向层的取向方向的彼 此平行的角度关系， 可知广视角显示面板光出射侧的第二偏光片与栅线也呈 大于 0。小于 90。的夹角。 为了保证透过率， 第一偏光片 11的透过轴与第一取 向层的取向方向所在的直线平行。 由于 TN模式的 3D光栅和广视角显示面 板的透射角度通常相差 45。， 在与 TN模式 3D光栅配合后， 使得广视角显示 面板光出射侧的第二偏光片的透过轴与 TN模式的 3D光栅光入射侧的偏光 片的透过轴之间的夹角小于 45°, 即更接近于平行。 优选地， 例如， 预定夹 角为 40。 ~ 50。， 例如 45。， 使两者完全平行。
如图 2和 3所示， 对于现有的广视角显示面板， 本实施例的广视角显示 面板 10相当于将偏光片 （包括光入射侧和光出射侧的两个偏光片 11、 12 ) 的透过轴方向及取向层（包括第一基板和第二基板上的两个取向层） 的取向 方向进行预定角度的旋转,使得广视角显示面板 10的光出射侧的第二偏光片 12的透光轴和 TN模式的 3D光栅 20的光入射侧的偏光片 21的透光轴接近 于平行， 以尽量匹配 TN模式的 3D光栅 20的光入射侧的最佳透射轴方向； 在出现完全平行时， 则完全匹配 TN模式的 3D光栅 20的入射侧的最佳透射 轴方向。 由于本实施例并未改变 TN模式的 3D光栅 20的偏光片的透射轴方 向， 因此由该广视角显示面板 10和该 TN模式 3D光栅 20形成的显示装置 视角不会偏离人眼观看的最佳方向， 使得 3D显示装置仍然能达到较好的视 觉角度特性。
由于广视角显示面板 10的偏光片和取向层取向方向发生了变化，若广视 角显示面板中的梳状电极与栅线还保持原有的倾斜角度， 与边缘电场方向与 液晶初始方向相差较大， 导致液晶取向混乱， 影响显示效果。 因此， 进一步 地， 对广视角显示面板中的梳状电极结构也做相应调整。 当像素电极为梳状 电极，公共电极为板状电极，梳状的像素电极相对于公共电极更靠近液晶层， 梳状的像素电极与第一取向层的取向方向所在的直线平行或与第一取向层的 取向方向所在的直线呈 7° ~ 11°夹角。 当公共电极为梳状电极， 像素电极为 板状电极， 梳状的公共电极相对像素电极更靠近液晶层， 梳状的公共电极与 第一取向层的取向方向所在的直线平行或与第一取向层的取向方向所在的直 线呈 7。 ~ 11。夹角。 当像素电极和公共电极均为梳状电极时， 两者均与第一 取向层的取向方向所在的直线平行或与第一取向层的取向方向所在的直线呈 7° ~ 11°夹角。 如图 4所示， 梳状电极 2与第一取向层取向方向（图 4中箭头 方向）所在的直线平行（单畴模式）或呈 7。 ~ 11。夹角， 即图 4中夹角 oc为 7。 ~ 11。（单畴模式或双畴模式， 图 4为双畴模式的示意图） 。 即， 梳状电极 2 随着第一取向层的取向方向调整而调整， 使梳状电极 2与栅线 1所呈的夹角 在 0。 ~ 90。之间。 优选地， 对于单畴模式， 例如夹角为 40。 ~ 50。， 如 45。； 对 于双畴模式， 夹角例如为 29° ~ 61°, 如 33°和 52°。 在图 4中， 在梳妆电极 2 之下 （垂直于纸面方向） 的板状电极或梳状电极未示出。
本发明的实施例还提供了一种 3D显示装置， 包括 TN模式的 3D光栅 20和上述广视角显示面板 10。 TN模式的 3D光栅 20位于广视角显示面板 10的出光侧。
如图 3所示， 该 TN模式的 3D光栅 20包括第一基板 (未示出） 、 位于 第一基板上的第一偏光片 21、 第二基板（未示出）和位于第二基板上的第二 偏光片 22、 以及位于第一基板和第二基板之间的液晶层 25。第一基板和第二 基板彼此相对设置，并通过例如封框胶形成液晶盒。第一偏光片 21相对于液 晶层 25例如形成在第一基板的外侧；第二偏光片 22相对于液晶层 25例如形 成在第二基板的外侧。 第一基板和第二基板上分别设有第一取向层和第二取 向层，例如相对于液晶层 25分别涂覆在第一基板和第二基板的内侧，并通过 例如摩擦工艺形成沿一定方向的细沟槽。第一偏光片 21的透过轴与第一取向 层的取向方向所在的直线平行，第二偏光片 22的透过轴与第二取向层的取向 方向所在的直线平行， 且第一偏光片 21的透过轴与第二偏光片 22的透过轴 彼此垂直。 例如， 第二基板作为阵列基板， 第一基板作为对置基板。 例如， 第一基板上形成均匀间隔开的条状电极， 同样第二基板上也形成有均匀间隔 开的条状电极， 且第一基板的条状电极和第二基板的条状电极彼此相对， 从 而可以对这些条状电极施加电压以控制液晶层的取向形成光栅（挡板） 。 显 示面板 10光出射侧的第二偏光片 12的透过轴与扭曲向列型 3D光栅 20的光 入射侧的偏光片 21的透过轴平行，从而使得 3D光栅 20与显示面板 10彼此 配合。
由于采用了上述尽量匹配 TN模式的 3D光栅 20的入射侧的最佳透射轴 方向的广视角显示面板 10, TN模式的 3D光栅 20的偏光片透过轴方向保持 不变， 从而保证了 TN模式的 3D显示装置的最佳视角特性。 优选地， 广视 角显示面板 10的光出射侧的第二偏光片 12的透过轴与 TN模式的 3D光栅 20的光入射侧的偏光片 21的透过轴平行， 即匹配 TN模式的 3D光栅 20的 入射侧的最佳透射轴方向。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、 一种显示面板， 包括： 第一基板、 位于第一基板上的第一偏光片、 第 二基板和位于第二基板上的第二偏光片、 位于所述第一基板和第二基板之间 的液晶层、 以及形成在所述第一基板之上的像素电极、 公共电极、 第一取向 层和栅线，
其中， 所述像素电极和公共电极两者至少之一为梳状电极， 所述第一偏 光片的透过轴与所述第一取向层的取向方向所在的直线平行， 所述第一偏光 片的透过轴与所述第二偏光片的透过轴垂直，
其中， 所述第一取向层的取向方向所在的直线与所述栅线呈大于 0。小于
90°的预定夹角。
2、 如权利要求 1所述的显示面板， 其中， 所述预定夹角为 40° ~ 50°。
3、 如权利要求 2所述的显示面板， 其中， 所述预定夹角为 45°。
4、 如权利要求 1~3 中任一项所述的显示面板， 其中， 所述像素电极为 梳状电极， 公共电极为板状电极， 梳状的像素电极相对公共电极更靠近所述 液晶层， 梳状的像素电极与第一取向层的取向方向所在的直线平行或与第一 取向层的取向方向所在的直线呈 7° ~ 11°夹角。
5、 如权利要求 1~3 中任一项所述的显示面板， 其中， 所述公共电极为 梳状电极， 像素电极为板状电极， 梳状的公共电极相对像素电极更靠近所述 液晶层， 梳状的公共电极与第一取向层的取向方向所在的直线平行或与第一 取向层的取向方向所在的直线呈 7° ~ 11°夹角。
6、 如权利要求 1~3 中任一项所述的显示面板， 其中， 所述像素电极和 公共电极均为梳状电极， 均与第一取向层的取向方向所在的直线平行或与第 一取向层的取向方向所在的直线呈 7° ~ 11°夹角。
7、 如权利要求 1~6 中任一项所述的显示面板， 还包括： 形成在第二基 板上的第二取向层， 所述第一取向层的取向方向与所述第二取向层的取向方 向相反。
8、 一种 3D显示装置， 包括扭曲向列型 3D光栅、 如权利要求 1~7中任 一项所述的显示面板， 其中， 所述扭曲向列型 3D光栅位于所述显示面板的 出光侧。
9、 如权利要求 7所述的 3D显示装置， 其中， 所述显示面板光出射侧的 所述第二偏光片的透过轴与所述扭曲向列型 3D光栅光入射侧的偏光片的透 过轴平行。
PCT/CN2013/077532 2013-03-29 2013-06-20 显示面板及3d显示装置 WO2014153865A1 (zh)

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CN103149740B (zh) 2013-03-29 2015-08-12 京东方科技集团股份有限公司 显示面板及3d显示装置
CN110727141A (zh) * 2019-10-23 2020-01-24 京东方科技集团股份有限公司 透明显示装置、制备方法和控制方法
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CN101424806A (zh) * 2007-11-01 2009-05-06 株式会社日立显示器 液晶显示装置
CN103149740A (zh) * 2013-03-29 2013-06-12 京东方科技集团股份有限公司 显示面板及3d显示装置
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