WO2016155180A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2016155180A1
WO2016155180A1 PCT/CN2015/086246 CN2015086246W WO2016155180A1 WO 2016155180 A1 WO2016155180 A1 WO 2016155180A1 CN 2015086246 W CN2015086246 W CN 2015086246W WO 2016155180 A1 WO2016155180 A1 WO 2016155180A1
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WIPO (PCT)
Prior art keywords
polarizing layer
display panel
display
disposed
transmission axis
Prior art date
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PCT/CN2015/086246
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English (en)
French (fr)
Inventor
朴求铉
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to EP15832663.7A priority Critical patent/EP3279719A4/en
Priority to US14/912,858 priority patent/US10139670B2/en
Publication of WO2016155180A1 publication Critical patent/WO2016155180A1/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
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
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    • 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
    • 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
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    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G—PHYSICS
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    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • G—PHYSICS
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    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses
    • 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
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133567—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the back side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
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    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/01—Number of plates being 1

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
  • the display mode of the existing LCD display panel is generally TN (Twisted Nematic) mode.
  • the display panel is composed of an upper polarizing layer 101, a lower polarizing layer 102, and a liquid crystal display substrate 103.
  • the upper polarizing layer 101 and the lower polarizing layer 102 are located on both sides of the liquid crystal display substrate 103, and the transmission axis directions of the upper polarizing layer 101 and the lower polarizing layer 102 are perpendicular to each other.
  • a light component of the incident light parallel to the transmission axis direction of the second polarizing layer 102 may pass through the lower polarizing layer 102.
  • the angle between the underlying liquid crystal molecules and the top liquid crystal molecules is 90 degrees, and when the light component passing through the second polarizing layer 102 is incident on the liquid crystal display substrate, the polarization direction of the light component is rotated. 90 degrees, that is, the polarization direction after the rotation of the light component is parallel to the transmission axis direction of the upper polarizing layer 101. At this time, all the light components can pass through the upper polarizing layer 101, and the display mode of the display panel is a wide viewing angle.
  • the display mode of the display panel is the wide viewing angle mode
  • the surrounding users may view the content on the display screen of the device, causing the privacy of the user to be leaked.
  • embodiments of the present invention provide a display panel and a display device.
  • the technical solutions are as follows:
  • a display panel comprising: a first polarizing layer, a display substrate, a second polarizing layer, and a retardation film;
  • the first polarizing layer is disposed on one side of the display substrate, and the first polarizing layer is disposed between the second polarizing layer and the display substrate, and a transmission axis direction of the first polarizing layer is The transmission axis directions of the second polarizing layer are perpendicular to each other;
  • the retardation film is disposed between the first polarizing layer and the second polarizing layer.
  • the display substrate is a liquid crystal display substrate
  • the display mode of the liquid crystal display substrate is an ADS mode (advanced super-dimensional field conversion mode) or a TN mode. (twisted nematic mode).
  • the display panel further includes a third polarizing layer
  • the first polarizing layer is disposed on a light emitting side of the display substrate, and the second polarizing layer is disposed on a light emitting side of the first polarizing layer;
  • the third polarizing layer is disposed on a light incident side of the display substrate, and a transmission axis direction of the third polarizing layer and a transmission axis direction of the first polarizing layer are perpendicular to each other.
  • the display panel further includes a third polarizing layer
  • the first polarizing layer is disposed on a light incident side of the display substrate, and the second polarizing layer is disposed on a light incident side of the first polarizing layer;
  • the third polarizing layer is disposed on a light emitting side of the display substrate, and a transmission axis direction of the third polarizing layer and a transmission axis direction of the first polarizing layer are perpendicular to each other.
  • the display substrate is an OLED display substrate.
  • the first polarizing layer is disposed on a light emitting side of the display substrate, and the second polarizing layer is disposed On the light exiting side of the first polarizing layer.
  • the display panel further includes an optical substrate
  • the optical substrate is disposed on a light exiting side of the second polarizing layer or between a light emitting side of the first polarizing layer and the retardation film.
  • the display panel further includes an optical substrate
  • the optical substrate is disposed on a light exiting side of the third polarizing layer.
  • the optical substrate is a touch pad or a cover glass.
  • the retardation film is a uniaxial retardation film.
  • the retardation film has a thickness of 90 nm to 320 nm.
  • a display device comprising the display panel of the first aspect described above.
  • the second polarizing layer and the retardation film are disposed such that the linearly polarized light whose polarization direction is parallel to the transmission axis direction of the second polarizing layer can be emitted from the display panel, and therefore, the viewing angle is perpendicular to The user of the display panel can view the content in the display panel, while the user with the other direction of view can not view the content in the display panel, thereby effectively protecting the privacy of the user.
  • FIG. 1 is a schematic structural view of a conventional display panel
  • FIG. 2(A) is a schematic structural diagram of a display panel according to an embodiment of the present invention.
  • FIG. 2(B) is a schematic structural view of a display panel according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 7 is a perspective view of a conventional display panel
  • FIG. 8(A) is a perspective view of a display panel according to an embodiment of the present invention.
  • FIG. 8(B) is a perspective view of a display panel according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
  • the existing display panel usually has a polarizing layer on the display substrate side.
  • the incident light passes through the polarizing layer, the incident light in all directions can be emitted from the polarizing layer, and the display panel operates in a wide viewing angle mode. Not well protected.
  • an embodiment of the present invention provides a display panel.
  • the display panel includes a first polarizing layer 201, a display substrate 202, a second polarizing layer 203, and a retardation film 204.
  • the first polarizing layer 201 is disposed on one side of the display substrate 202, and the first polarizing layer 201 is disposed between the second polarizing layer 203 and the display substrate 202, and the transmission axis direction of the first polarizing layer 201 and the second polarizing layer.
  • the transmission axis directions of 203 are perpendicular to each other; the phase difference film 204 is disposed between the first polarizing layer 201 and the second polarizing layer 203.
  • the display substrate In the display field, the display substrate generally has two sides, which are the light incident side and the light exit side, and the first polarizing layer 201 may be disposed on the light incident side of the display substrate 202 or on the light exit side of the display substrate 202.
  • the structure of the display panel provided by this embodiment is also different for different positional relationships between the first polarizing layer 201 and the display substrate 202.
  • the first polarizing layer 201 is disposed on the light emitting side of the display substrate 202, and the second polarizing layer 203 is disposed on the light emitting side of the first polarizing layer 201, and the phase difference is
  • the diaphragm 204 is disposed between the light exiting side of the first polarizing layer 201 and the light incident side of the second polarizing layer 203.
  • the first polarizing layer 201 is disposed on the light incident side of the display substrate 202, and the second polarizing layer 203 is disposed on the light incident side of the first polarizing layer 201.
  • the retardation film 204 is disposed on the light incident side and the second bias of the first polarizing layer 201 Between the light exit sides of the light layer 203.
  • the second polarizing layer and the retardation film are disposed on the basis of the existing display panel, so that the linearly polarized light whose polarization direction is parallel to the transmission axis direction of the second polarizing layer can be displayed. Shot in the panel. Therefore, the user whose viewing angle is perpendicular to the display panel can view the content in the display panel, and the user whose viewing angle is in other directions cannot view the content in the display panel, thereby effectively protecting the privacy of the user.
  • an embodiment of the present invention provides a display panel including a first polarizing layer 201, a display substrate 202, a second polarizing layer 203, and a retardation film 204.
  • the display substrate 202 is a liquid crystal display substrate as an example.
  • the first polarizing layer 201 is disposed on the light emitting side of the liquid crystal display substrate 202
  • the second polarizing layer 203 is disposed on the light emitting side of the first polarizing layer 201
  • the retardation film 204 is disposed on the light emitting side of the first polarizing layer 201 and Between the light incident sides of the second polarizing layer 203.
  • the polarizing layer usually consists of a polarizer. Since the polarizer has a transmission axis, only incident light having a polarization direction parallel to the transmission axis direction is allowed to be emitted. Therefore, when the incident light passes through the polarizing layer, if the polarization direction of the incident light is parallel to the transmission axis direction of the polarizing layer, the incident light may be All pass through the polarizing layer; if the polarization direction of the incident light is perpendicular to the transmission axis direction of the polarizing layer, the incident light cannot pass through the polarizing layer; if the polarization direction of the incident light forms a certain angle with the transmission axis direction of the polarizing layer, the incident light Part of the light component may pass through the polarizing layer, and the polarization direction of the partial light component is parallel to the transmission axis direction of the polarizing layer.
  • the polarizing layer also has good absorption, scattering and reflection characteristics, and can hide the
  • a plurality of polarizing layers are involved.
  • the polarizing layer is divided into the first polarizing layer 201 and the second polarizing layer according to different positions of the polarizing layers in the display panel.
  • Layer 203 In this embodiment, the transmission axis direction of the first polarizing layer 201 and the transmission axis direction of the second polarizing layer 203 are perpendicular to each other.
  • the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 90 degrees
  • the angle between the transmission axis direction of the second polarizing layer 203 and the horizontal direction is 0 degrees; when the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 0 degrees, the transmission axis direction and level of the second polarizing layer 203 The angle of the direction is 90 degrees.
  • the display mode of the liquid crystal display substrate may be an ADS mode, a TN mode, or the like.
  • the TN mode is the most representative display mode in the current display field.
  • the liquid crystal molecules in the liquid crystal material are arranged in a spiral, and the angle between the underlying liquid crystal molecules and the top liquid crystal molecules is 90 degrees.
  • the pixel electrode is connected to a TFT (Thin Film Transistor).
  • the pixel electrode and the common electrode may be disposed vertically or horizontally to enable them to generate an electric field in a vertical or horizontal direction.
  • a vertical electric field can be generated;
  • a horizontal electric field can be generated.
  • the retardation film 204 is a uniaxial retardation film composed of a uniaxial birefringent crystal.
  • the retardation film 204 has a thickness of 90 nm (nanometer) to 320 nm. In practical applications, the retardation film 204 is usually a quarter-wave plate or a half-wave plate. It is known from the properties of the uniaxial birefringent crystal in physics that the retardation film 204 can change the polarization direction of the incident light by changing the phase of the incident light.
  • the phase difference of the uniaxial birefringent crystal retardation is:
  • ⁇ is the phase difference of the uniaxial birefringent crystal retardation
  • ⁇ is the wavelength of the incident light
  • n o is the refractive index of the ordinary light
  • n e is the refractive index of the extraordinary light
  • d is the thickness of the uniaxial birefringent crystal.
  • the display panel provided by the embodiment of the present invention may further include a third polarizing layer 205 whose transmission axis direction is perpendicular to the transmission axis direction of the first polarizing layer 201.
  • a third polarizing layer 205 whose transmission axis direction is perpendicular to the transmission axis direction of the first polarizing layer 201.
  • the first polarizing layer 201 is disposed on the light emitting side of the liquid crystal display substrate 202
  • the second polarizing layer 203 is disposed on the light emitting side of the first polarizing layer 201
  • the third polarizing layer 205 is disposed on the liquid crystal display substrate 202.
  • the phase difference film 204 is disposed between the light outgoing side of the first polarizing layer 201 and the light incident side of the second polarizing layer 203.
  • the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 90 degrees
  • the angle between the transmission axis direction of the second polarizing layer 203 and the horizontal direction is 0 degrees
  • the transmission of the third polarizing layer 205 Shaft side For example, the angle between the horizontal direction and the horizontal direction is 0 degree
  • the phase difference film 204 is a quarter wave plate.
  • the natural light becomes the first linearly polarized light whose polarization direction is at an angle of 0 degrees with respect to the horizontal direction, and when passing through the liquid crystal display substrate 202, in the liquid crystal Under the action of molecules, the polarization direction of the first linearly polarized light is rotated by 90 degrees, and becomes a second linearly polarized light having an angle between the polarization direction and the horizontal direction of 90 degrees.
  • the second linearly polarized light passes through the phase difference film 204 And obtaining a third polarized light whose polarization direction is at an angle with the horizontal direction.
  • the polarization direction of the third polarized light is not parallel to the transmission axis direction of the third polarizing layer 205.
  • the display panel operates in a narrow viewing angle mode, and only the user whose viewing angle is perpendicular to the display panel can view the content in the display panel.
  • the display panel provided by the embodiment of the present invention may further include an optical substrate 206, which has the functions of protecting the display panel from damage, increasing the transmittance of incident light, and the like.
  • the optical substrate 206 can be a touch panel or a protective glass.
  • the optical substrate 206 is not specifically limited in the embodiment of the present invention. Referring to FIG. 5, the optical substrate 206 may be disposed on the light exiting side of the second polarizing layer 203. Referring to FIG. 6 , the optical substrate 206 may also be disposed between the light exiting side of the first polarizing layer 201 and the retardation film 204 .
  • the angle between the optical axis direction of the retardation film 204 and the horizontal direction may be selected as appropriate, for example, any angle from 0° to 45° may be selected.
  • FIG. 7 is a perspective view of a conventional display panel
  • FIGS. 8(A) and 8(B) are perspective views of a display panel according to an embodiment of the present invention.
  • the viewing angle range of the display panel of the present invention is the area indicated by 1 in FIG. 7.
  • the viewing angle range of the display panel provided by the embodiment of the present invention is the area indicated by 2 in FIG. 8(A) and 3 in FIG. 8(B).
  • the second polarizing layer and the retardation film are disposed on the basis of the existing display panel, so that the linearly polarized light whose polarization direction is parallel to the transmission axis direction of the second polarizing layer can be displayed.
  • the panel is ejected. Therefore, the user whose viewing angle is perpendicular to the display panel can view the content in the display panel, and the user whose viewing angle is in other directions cannot view the content in the display panel, thereby effectively protecting the privacy of the user.
  • an embodiment of the present invention provides a display panel, the display surface
  • the board includes a first polarizing layer 201, a display substrate 202, a second polarizing layer 203, and a retardation film 204.
  • the display substrate 202 is a liquid crystal display substrate as an example.
  • the first polarizing layer 201 is disposed on the light incident side of the display substrate 202
  • the second polarizing layer 203 is disposed on the light incident side of the first polarizing layer 201
  • the retardation film 204 is disposed on the light incident side of the first polarizing layer 201.
  • the polarizing layer usually consists of a polarizer. Since the polarizer has a transmission axis, only incident light having a polarization direction parallel to the transmission axis direction is allowed to be emitted. Therefore, when the incident light passes through the polarizing layer, if the polarization direction of the incident light is parallel to the transmission axis direction of the polarizing layer, the incident light may be All pass through the polarizing layer; if the polarization direction of the incident light is perpendicular to the transmission axis direction of the polarizing layer, the incident light cannot pass through the polarizing layer; if the polarization direction of the incident light forms a certain angle with the transmission axis direction of the polarizing layer, the incident light Part of the light component may pass through the polarizing layer, and the polarization direction of the partial light component is parallel to the transmission axis direction of the polarizing layer.
  • the polarizing layer also has good absorption, scattering and reflection characteristics, and can hide the
  • the polarizing layer is divided into the first polarizing layer 201 and the second polarizing layer according to the position of each polarizing layer in the display panel. 203.
  • the transmission axis direction of the first polarizing layer 201 and the transmission axis direction of the second polarizing layer 203 are perpendicular to each other.
  • the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 90 degrees
  • the angle between the transmission axis direction of the second polarizing layer 203 and the horizontal direction is 0 degrees; when the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 0 degrees, the transmission axis direction and level of the second polarizing layer 203 The angle of the direction is 90 degrees.
  • the display mode of the liquid crystal display substrate may be an ADS mode, a TN mode, or the like.
  • the TN mode is the most representative display mode in the current display field.
  • the liquid crystal molecules in the liquid crystal material are arranged in a spiral, and the angle between the underlying liquid crystal molecules and the top liquid crystal molecules is 90 degrees.
  • the pixel electrode is connected to a TFT (Thin Film Transistor).
  • the pixel electrode and the common electrode may be disposed vertically or horizontally to enable them to generate an electric field in a vertical or horizontal direction.
  • a vertical electric field can be generated;
  • a horizontal electric field can be generated.
  • the retardation film 204 is a uniaxial retardation film composed of a uniaxial birefringent crystal.
  • the retardation film 204 has a thickness of 90 nm (nanometer) to 320 nm. In practical applications, the retardation film 204 is usually a quarter-wave plate or a half-wave plate. It is known from the properties of the uniaxial birefringent crystal in physics that the retardation film 204 can change the polarization direction of the incident light by changing the phase of the incident light.
  • the phase difference of the uniaxial birefringent crystal retardation is:
  • ⁇ is the phase difference of the uniaxial birefringent crystal retardation
  • ⁇ is the wavelength of the incident light
  • n o is the refractive index of the ordinary light
  • n e is the refractive index of the extraordinary light
  • d is the thickness of the uniaxial birefringent crystal.
  • the display panel provided by the embodiment of the present invention may further include a third polarizing layer 205 whose transmission axis direction is perpendicular to the transmission axis direction of the first polarizing layer 201 .
  • a third polarizing layer 205 whose transmission axis direction is perpendicular to the transmission axis direction of the first polarizing layer 201 .
  • the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 90 degrees
  • the angle between the transmission axis direction of the third polarizing layer and the horizontal direction is 0 degrees
  • the transmission axis direction of the first polarizing layer 201 is When the angle in the horizontal direction is 0 degrees, the angle between the transmission axis direction of the third polarizing layer and the horizontal direction is 90 degrees.
  • the first polarizing layer 201 is disposed on the light incident side of the liquid crystal display substrate 202
  • the second polarizing layer 203 is disposed on the light incident side of the first polarizing layer 201
  • the third polarizing layer 205 is disposed on the liquid crystal display substrate 202 .
  • the retardation film 204 is disposed between the light incident side of the first polarizing layer 201 and the light emitting side of the second polarizing layer 203.
  • Figure 10 illustrates a narrow viewing angle mode in accordance with one embodiment of the present invention.
  • the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 0 degrees
  • the angle between the transmission axis direction of the second polarizing layer 203 and the horizontal direction is 90 degrees
  • the transmission of the third polarizing layer 205 The angle between the axial direction and the horizontal direction is 90 degrees
  • the phase difference diaphragm 204 is a quarter-wave plate.
  • the natural light becomes the first linearly polarized light whose polarization direction is at an angle of 90 degrees with respect to the horizontal direction, when the first linearly polarized light passes through the retardation film.
  • the polarization direction of the first linearly polarized light will change, and a second polarized light whose polarization direction is at an angle with the horizontal direction is obtained.
  • the second polarized light After the second polarized light passes through the first polarizing layer 201, the second polarized light is Only a light component whose polarization direction is parallel to the transmission axis direction of the first polarizing layer 201 may pass through the first polarizing layer 201 if it will pass
  • the light component of the first polarizing layer 201 is referred to as a third polarized light, and the angle of polarization of the third polarized light with the horizontal direction is 0 degrees.
  • the polarization direction of the third polarized light is rotated by 90 degrees to obtain a fourth polarized light, and the angle of polarization of the fourth polarized light with the horizontal direction is 90 degrees.
  • the fourth polarized light passes through the third polarizing layer 205
  • the polarization direction of the fourth polarized light is parallel to the transmission axis direction of the third polarizing layer 205, and may pass through the third polarizing layer 205, and the display panel operates in a narrow viewing angle mode. Only the user whose viewing angle is perpendicular to the display panel can view the content in the display panel.
  • the display panel provided by the embodiment of the present invention may further include an optical substrate 206 having the functions of protecting the display panel from damage, increasing the transmittance of incident light, and the like.
  • the optical substrate 206 can be a touch panel or a protective glass.
  • the optical substrate 206 is not specifically limited in the embodiment of the present invention. Referring to FIG. 11 , the optical substrate 206 may be disposed on the light exiting side of the third polarizing layer 205 .
  • the angle between the optical axis direction of the retardation film 204 and the horizontal direction may be selected as appropriate, for example, any angle from 0° to 45° may be selected.
  • the second polarizing layer and the retardation film are disposed on the basis of the existing display panel, so that the linearly polarized light whose polarization direction is parallel to the transmission axis direction of the second polarizing layer can be displayed. Shot in the panel. Therefore, the user whose viewing angle is perpendicular to the display panel can view the content in the display panel, and the user whose viewing angle is in other directions cannot view the content in the display panel, thereby effectively protecting the privacy of the user.
  • an embodiment of the present invention further provides a display panel including a first polarizing layer 201, a display substrate 202, a second polarizing layer 203, and a phase difference film 204.
  • This embodiment takes the display substrate 202 as an OLED display substrate as an example.
  • the first polarizing layer 201 is disposed on the light emitting side of the OLED display substrate 202
  • the second polarizing layer 203 is disposed on the light emitting side of the first polarizing layer 201
  • the retardation film 204 is disposed on the light emitting side of the first polarizing layer 201.
  • the polarizing layer usually consists of a polarizer. Since the polarizer has a transmission axis, only incident light having a polarization direction parallel to the transmission axis direction is allowed to be emitted. Therefore, when the incident light passes through the polarizing layer, if the polarization direction of the incident light is parallel to the transmission axis direction of the polarizing layer, the incident light may be All pass through the polarizing layer; if the polarization direction of the incident light is perpendicular to the transmission axis direction of the polarizing layer, the incident light cannot pass through the polarizing layer; if the polarization direction of the incident light and the polarizing layer The direction of the transmission axis is at a certain angle, and part of the light component of the incident light can pass through the polarizing layer, and the polarization direction of the partial light component is parallel to the transmission axis direction of the polarizing layer.
  • the polarizing layer also has good absorption, scattering and reflection characteristics
  • the polarizing layer is divided into the first polarizing layer 201 and the second polarizing layer according to the position of each polarizing layer in the display panel. 203.
  • the transmission axis direction of the first polarizing layer 201 and the transmission axis direction of the second polarizing layer 203 are perpendicular to each other.
  • the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 90 degrees
  • the angle between the transmission axis direction of the second polarizing layer 203 and the horizontal direction is 0 degrees; when the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 0 degrees, the transmission axis direction and level of the second polarizing layer 203 The angle of the direction is 90 degrees.
  • the OLED display substrate has the advantages of self-illumination, high response speed, high color gamut, wide viewing angle, ultra-thin, low power consumption, and the like, and can be widely used in lighting, large-size televisions, flexible mobile phones, and the like.
  • the retardation film 204 is a uniaxial retardation film composed of a uniaxial birefringent crystal.
  • the retardation film 204 has a thickness of 90 nm (nanometer) to 320 nm. In practical applications, the retardation film 204 is usually a quarter-wave plate or a half-wave plate. It is known from the properties of the uniaxial birefringent crystal in physics that the retardation film 204 can change the polarization direction of the incident light by changing the phase of the incident light.
  • the phase difference of the uniaxial birefringent crystal retardation is:
  • ⁇ is the phase difference of the uniaxial birefringent crystal retardation
  • ⁇ is the wavelength of the incident light
  • n o is the refractive index of the ordinary light
  • n e is the refractive index of the extraordinary light
  • d is the thickness of the uniaxial birefringent crystal.
  • Figure 12 illustrates a narrow viewing angle mode in accordance with one embodiment of the present invention.
  • the angle between the transmission axis direction of the first polarizing layer 201 and the horizontal direction is 90 degrees
  • the angle between the transmission axis direction of the second polarizing layer 203 and the horizontal direction is 0 degrees
  • the phase difference film 204 is four.
  • the natural light becomes the first linearly polarized light whose polarization direction is at an angle of 90 degrees with the horizontal direction
  • the first After the linearly polarized light passes through the retardation film 204 a second polarized light whose polarization direction is at an angle with the horizontal direction is obtained.
  • the polarization direction of the second polarized light is
  • the transmission axis directions of the two polarizing layers 203 are not parallel, and only the light component of the second polarized light whose polarization direction is parallel to the transmission axis direction of the second polarizing layer 203 can pass through the second polarizing layer 203, and the display operates in a narrow viewing angle mode. Only the user whose viewing angle is perpendicular to the display panel can view the content in the display panel.
  • the display panel provided by the embodiment of the present invention may further include an optical substrate 206, which has the functions of protecting the display panel from damage, increasing the transmittance of incident light, and the like.
  • the optical substrate 206 can be a touch panel or a protective glass.
  • the optical substrate 206 is not specifically limited in the embodiment of the present invention. Referring to FIG. 13, the optical substrate 206 may be disposed on the light exiting side of the second polarizing layer 203. Referring to FIG. 14 , the optical substrate 206 may also be disposed between the light exiting side of the first polarizing layer 201 and the retardation film 204 .
  • the angle between the optical axis direction of the retardation film 204 and the horizontal direction may be selected as appropriate, for example, any angle from 0° to 45° may be selected.
  • the second polarizing layer and the retardation film are disposed on the basis of the existing display panel, so that the linearly polarized light whose polarization direction is parallel to the transmission axis direction of the second polarizing layer can be displayed.
  • the panel is ejected. Therefore, the user whose viewing angle is perpendicular to the display panel can view the content in the display panel, and the user whose viewing angle is in other directions cannot view the content in the display panel, thereby effectively protecting the privacy of the user.
  • the embodiment of the present invention further provides a display device, which includes a display panel, and the display panel may be the display panel shown in any of the above-mentioned FIGS. 2(A) to 6 and 9 to 14.
  • the display device may be a device having a display screen, such as a smart phone, a tablet computer, or a smart TV.

Abstract

一种显示面板，包括：第一偏光层（201）、显示基板（202）、第二偏光层（203）及相位差膜片（204），其中，第一偏光层（201）设置于显示基板（202）的一侧，且第一偏光层（201）设置于第二偏光层（203）与显示基板（202）之间，第一偏光层（201）的透射轴方向与第二偏光层（203）的透射轴方向互相垂直，相位差膜片（204）设置于第一偏光层（201）与第二偏光层（203）之间。通过在现有的显示面板基础上，设置了第二偏光层（203）及相位差膜片（204），使得偏振方向平行于第二偏光层（203）的透射轴方向的线偏振光才能从显示面板中射出，因此，视角垂直于显示面板的用户可观看到显示面板中的内容，而视角为其他方向的用户却无法观看到显示面板中内容，因而有效地保护了用户的隐私。

Description

显示面板及显示装置 技术领域
本发明涉及显示技术领域，特别涉及一种显示面板及显示装置。
背景技术
随着显示技术的发展，各种显示器在日常生活中得到了广泛的应用，例如，具有显示屏幕的智能手机、平板电脑、MP3(Moving Picture Experts Group Audio Layer III，运动图像组)等等。目前，主流显示器的显示面板主要有两种类型，一种为液晶显示面板，另一种为OLED(Organic Light-Emitting Diode，有机发光二极管)显示面板。
以LCD显示面板为例，现有的LCD显示面板的显示模式一般为TN(Twisted Nematic，扭曲向列型)模式。参见图1，该显示面板由上偏光层101、下偏光层102及液晶显示基板103组成。其中，上偏光层101和下偏光层102位于液晶显示基板103的两侧，且上偏光层101和下偏光层102的透射轴方向互相垂直。当入射光通过下偏光层102进入显示面板时，入射光中平行于第二偏光层102透射轴方向的光分量可以通过下偏光层102。由于液晶分子成螺旋式排布，底层液晶分子和顶层液晶分子之间的夹角为90度，当通过第二偏光层102的光分量入射到液晶显示基板时，该光分量的偏振方向将旋转90度，即，该光分量旋转后的偏振方向与上偏光层101的透射轴方向平行，此时所有的光分量均可通过上偏光层101，显示面板的显示模式为宽视角。
在实现本发明的过程中，发明人发现相关技术至少存在以下问题：
当显示面板的显示模式为宽视角模式时，用户在公共场合使用智能手机、平板电脑等具有显示屏幕的设备时，周围用户可能会观看到这些设备显示屏幕上的内容，致使用户的隐私被泄露。
发明内容
为了解决相关技术的问题，本发明实施例提供了一种显示面板及显示装置。技术方案如下：
一方面，提供了一种显示面板，所述显示面板包括：第一偏光层、显示基板、第二偏光层及相位差膜片；
所述第一偏光层设置于所述显示基板的一侧，且所述第一偏光层设置于所述第二偏光层与所述显示基板之间，所述第一偏光层的透射轴方向与所述第二偏光层的透射轴方向互相垂直；
所述相位差膜片设置于所述第一偏光层与所述第二偏光层之间。
结合第一方面，在第一方面的第一种可能的实现方式中，所述显示基板为液晶显示基板，所述液晶显示基板的显示模式为ADS模式(高级超维场转换模式)或TN模式(扭曲向列模式)。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述显示面板还包括第三偏光层；
所述第一偏光层设置于所述显示基板的出光侧，所述第二偏光层设置于所述第一偏光层的出光侧；
所述第三偏光层设置于所述显示基板的入光侧，所述第三偏光层的透射轴方向与所述第一偏光层的透射轴方向相互垂直。
结合第一方面的第一种可能的实现方式，在第一方面的第三种可能的实现方式中，所述显示面板还包括第三偏光层；
所述第一偏光层设置于所述显示基板的入光侧，所述第二偏光层设置于所述第一偏光层的入光侧；
所述第三偏光层设置于所述显示基板的出光侧，所述第三偏光层的透射轴方向与所述第一偏光层的透射轴方向互相垂直。
结合第一方面，在第一方面的第四种可能的实现方式中，所述显示基板为OLED显示基板。
结合第一方面的第四种可能的实现方式，在第一方面的第五种可能的实现方式中，所述第一偏光层设置于所述显示基板的出光侧，所述第二偏光层设置于所述第一偏光层的出光侧。
结合第一方面的第二种可能的实现方式或第一方面的第五种可能的实现方式，在第一方面的第六种可能的实现方式中，所述显示面板还包括光学基板；
所述光学基板设置于所述第二偏光层的出光侧或设置于所述第一偏光层的出光侧与所述相位差膜片之间。
结合第一方面的第三种可能的实现方式，在第一方面的第七种可能的实现方式中，所述显示面板还包括光学基板；
所述光学基板设置于所述第三偏光层的出光侧。
结合第一方面的第六种可能的实现方式或第一方面的第七种可能的实现方式，在第一方面的第八种可能的实现方式中，所述光学基板为触摸板或保护玻璃。
结合第一方面，在第一方面的第九种可能的实现方式中，所述相位差膜片为单轴相位差膜片。
结合第一方面，在第一方面的第十种可能的实现方式中，所述相位差膜片的厚度为90nm～320nm。
第二方面，提供了一种显示装置，所述显示装置包括如上述第一方面所述的显示面板。
本发明实施例提供的技术方案带来的有益效果是：
在现有的显示面板基础上，设置了第二偏光层及相位差膜片，使得偏振方向平行于第二偏光层的透射轴方向的线偏振光才能从显示面板中射出，因此，视角垂直于显示面板的用户可观看到显示面板中的内容，而视角为其他方向的用户却无法观看到显示面板中的内容，因而有效地保护了用户的隐私。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有的显示面板的结构示意图；
图2(A)是本发明一个实施例提供的一种显示面板的结构示意图；
图2(B)是本发明另一个实施例提供的一种显示面板的结构示意图；
图3是本发明另一个实施例提供的一种显示面板的结构示意图；
图4是本发明另一个实施例提供的一种显示面板的结构示意图；
图5是本发明另一个实施例提供的一种显示面板的结构示意图；
图6是本发明另一个实施例提供的一种显示面板的结构示意图；
图7是现有的显示面板的视角图；
图8(A)是本发明实施例提供的显示面板的一种视角图；
图8(B)是本发明实施例提供的显示面板的一种视角图；
图9是本发明另一个实施例提供的一种显示面板的结构示意图；
图10是本发明另一个实施例提供的一种显示面板的结构示意图；
图11是本发明另一个实施例提供的一种显示面板的结构示意图；
图12是本发明另一个实施例提供的一种显示面板的结构示意图；
图13是本发明另一个实施例提供的一种显示面板的结构示意图；
图14是本发明另一个实施例提供的一种显示面板的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
随着信息技术的发展，信息安全成为用户十分关注的问题。现有的显示面板在显示基板一侧通常设置一个偏光层，当入射光通过偏光层时，各个方向的入射光均可从偏光层中出射，显示面板运行在宽视角模式，此时用户的隐私得不到很好的保护。
为了解决上述技术问题，本发明实施例提供了一种显示面板。如图2(A)和2(B)所示，该显示面板包括：第一偏光层201、显示基板202、第二偏光层203及相位差膜片204。
其中，第一偏光层201设置于显示基板202的一侧，且第一偏光层201设置于第二偏光层203与显示基板202之间，第一偏光层201的透射轴方向与第二偏光层203的透射轴方向互相垂直；相位差膜片204设置于第一偏光层201与第二偏光层203之间。
在显示领域，显示基板一般有两侧，分别为入光侧和出光侧，而第一偏光层201既可设置于显示基板202的入光侧，也可设置于显示基板202的出光侧。针对第一偏光层201和显示基板202之间的不同位置关系，本实施例提供的显示面板的结构也是不同的。
在本发明的一个实施例中，如图2(A)所示，第一偏光层201设置于显示基板202的出光侧，第二偏光层203设置于第一偏光层201的出光侧，相位差膜片204设置于第一偏光层201的出光侧和第二偏光层203的入光侧之间。
在本发明的另一个实施例中，如图2(B)所示，第一偏光层201设置于显示基板202的入光侧，第二偏光层203设置于第一偏光层201的入光侧，相位差膜片204设置于第一偏光层201的入光侧和第二偏 光层203的出光侧之间。
本发明实施例提供的显示面板，在现有的显示面板基础上，设置了第二偏光层及相位差膜片，使得偏振方向平行于第二偏光层的透射轴方向的线偏振光才能从显示面板中射出。因此，视角垂直于显示面板的用户可观看到显示面板中的内容，而视角为其他方向的用户却无法观看到显示面板中的内容，因而有效地保护了用户的隐私。
如图2(A)所示，本发明实施例提供了一种显示面板，该显示面板包括：第一偏光层201、显示基板202、第二偏光层203及相位差膜片204。本实施例以显示基板202为液晶显示基板为例进行说明。其中，第一偏光层201设置于液晶显示基板202的出光侧，第二偏光层203设置于第一偏光层201的出光侧，相位差膜片204设置于第一偏光层201的出光侧和第二偏光层203的入光侧之间。
在显示领域，偏光层通常由一个偏光片组成。由于偏光片具有透射轴，仅允许偏振方向与透射轴方向平行的入射光出射，因此，当入射光通过偏光层时，若入射光的偏振方向与偏光层的透射轴方向平行，则入射光可全部通过偏光层；若入射光的偏振方向与偏光层的透射轴方向垂直，则入射光无法通过偏光层；若入射光的偏振方向与偏光层的透射轴方向成一定夹角，则入射光的部分光分量可通过偏光层，且该部分光分量的偏振方向平行于偏光层的透射轴方向。另外，偏光层还具有良好的吸收、散射及反射特性，可通过吸收、散射、反射等作用将不能透射的入射光隐藏，以控制图像的显示效果。
由于本实施例中涉及到多个偏光层，为了便于对这些偏光层加以区分，本实施例根据各个偏光层在显示面板中的不同位置，将偏光层划分为第一偏光层201及第二偏光层203。在本实施例中，第一偏光层201的透射轴方向与第二偏光层203的透射轴方向互相垂直，当第一偏光层201的透射轴方向与水平方向的夹角为90度时，第二偏光层203的透射轴方向与水平方向的夹角为0度；当第一偏光层201的透射轴方向与水平方向的夹角为0度时，第二偏光层203的透射轴方向与水平方向的夹角为90度。
在本实施例中，液晶显示基板202内具有介电各向异性和光学各向异性的液晶材料，以及用于产生电场以驱动液晶材料的像素电极和公共电极。液晶显示基板的显示模式可以为ADS模式、TN模式等。 TN模式为目前显示领域最有代表性的显示模式，在TN模式下液晶材料中的液晶分子成螺旋式排布，底层液晶分子和顶层液晶分子之间的夹角为90度。像素电极与TFT(Thin Film Transistor，薄膜晶体管)相连。像素电极和公共电极可以垂直或者水平设置，以使它们能够产生垂直或者水平方向的电场。当像素电极和公共电极设置于液晶材料两侧彼此相对的基板上时，可产生垂直电场；当像素电极和公共电极设置于同一基板上时，可产生水平电场。
在本实施例中，相位差膜片204为一种单轴相位差膜片，由单轴双折射晶体构成。相位差膜片204的厚度为90nm(纳米)～320nm，在实际应用时，相位差膜片204通常为四分之一波片或二分之一波片等。由物理学中单轴双折射晶体的性质可知，相位差膜片204可通过改变入射光的相位，进而改变入射光的偏振方向。单轴双折射晶体延迟的相位差为：
Figure PCTCN2015086246-appb-000001
其中，Δφ为单轴双折射晶体延迟的相位差，λ为入射光的波长，no为寻常光的折射率，ne为非寻常光的折射率，d为单轴双折射晶体的厚度。
参见图3，本发明实施例提供的显示面板还可以包括第三偏光层205，该第三偏光层205的透射轴方向与第一偏光层201的透射轴方向互相垂直。当第一偏光层201的透射轴方向与水平方向的夹角为90度时，第三偏光层的透射轴方向与水平方向的夹角为0度；当第一偏光层201的透射轴方向与水平方向的夹角为0度时，第三偏光层的透射轴方向与水平方向的夹角为90度。由图3可知，第一偏光层201设置于液晶显示基板202的出光侧，第二偏光层203设置于第一偏光层201的出光侧，第三偏光层205设置于液晶显示基板202的入光侧，此时，相位差膜片204设置于第一偏光层201的出光侧与第二偏光层203的入光侧之间。
图4为根据本发明一个实施例示出的窄视角模式。参见图4，以第一偏光层201的透射轴方向与水平方向的夹角为90度、第二偏光层203的透射轴方向与水平方向的夹角为0度、第三偏光层205的透射轴方 向与水平方向的夹角为0度、相位差膜片204为四分之一波片为例。当自然光通过第三偏光层205入射到如图4所示的显示面板时，自然光变为偏振方向与水平方向夹角为0度的第一线偏振光，当通过液晶显示基板202时，在液晶分子的作用下，第一线偏振光的偏振方向旋转90度，变为偏振方向与水平方向之间的夹角为90度的第二线偏振光，当第二线偏振光经过相位差膜片204之后，得到偏振方向与水平方向成一定夹角的第三偏振光，当第三偏振光通过第三偏光层205时，第三偏振光的偏振方向与第三偏光层205的透射轴方向不平行，第三偏振光中仅偏振方向与第三偏光层205的透射轴方向平行的光分量可通过第三偏光层。此时，显示面板以窄视角模式运行，仅视角垂直于显示面板的用户可观看到显示面板中的内容。
基于图3所示的显示面板，本发明实施例提供的显示面板还可以包括光学基板206，该光学基板具有保护显示面板不被损坏、增加入射光的透射率等作用。该光学基板206可以为触摸板，还可以为保护玻璃，本发明实施例不对光学基板206作具体的限定。参见图5，光学基板206可以设置于第二偏光层203的出光侧。参见图6，光学基板206还可设置于第一偏光层201的出光侧与相位差膜片204之间。
另外，为了控制显示面板上的辉度分布，相位差膜片204的光轴方向与水平方向的夹角可根据需要选取适当的数值，例如，可选取0°～45°中的任一角度。
图7为现有的显示面板的视角图，图8(A)和8(B)为本发明实施例提供的显示面板的视角图。其中，现有显示面板的视角范围为图7中1所指的区域，本发明实施例提供的显示面板的视角范围为图8(A)中2所指的区域及图8(B)中3所指的区域。通过对现有显示面板的视角图和本发明实施例提供的显示面板的视角图进行对比可以发现，采用本发明实施例提供的显示面板，显示面板的视角将大大减小。
本发明实施例提供的显示面板，在现有的显示面板基础上，设置了第二偏光层及相位差膜片，使得偏振方向平行于第二偏光层的透射轴方向的线偏振光才能从显示面板中射出，因此，视角垂直于显示面板的用户可观看到显示面板中的内容，而视角为其他方向的用户却无法观看到显示面板中的内容，因而有效地保护了用户的隐私。
如图2(B)所示，本发明实施例提供了一种显示面板，该显示面 板包括：第一偏光层201、显示基板202、第二偏光层203及相位差膜片204。本实施例以显示基板202为液晶显示基板为例进行说明。其中，第一偏光层201设置于显示基板202的入光侧，第二偏光层203设置于第一偏光层201的入光侧，相位差膜片204设置于第一偏光层201的入光侧和第二偏光层203的出光侧之间。
在显示领域，偏光层通常由一个偏光片组成。由于偏光片具有透射轴，仅允许偏振方向与透射轴方向平行的入射光出射，因此，当入射光通过偏光层时，若入射光的偏振方向与偏光层的透射轴方向平行，则入射光可全部通过偏光层；若入射光的偏振方向与偏光层的透射轴方向垂直，则入射光无法通过偏光层；若入射光的偏振方向与偏光层的透射轴方向成一定夹角，则入射光的部分光分量可通过偏光层，且该部分光分量的偏振方向平行于偏光层的透射轴方向。另外，偏光层还具有良好的吸收、散射及反射特性，可通过吸收、散射、反射等作用将不能透射的入射光隐藏，以控制图像的显示效果。
由于本实施例中涉及到多个偏光层，为了便于对这些偏光层加以区分，本实施例根据各个偏光层在显示面板中所在位置，将偏光层划分为第一偏光层201及第二偏光层203。在本实施例中，第一偏光层201的透射轴方向与第二偏光层203的透射轴方向互相垂直，当第一偏光层201的透射轴方向与水平方向的夹角为90度时，第二偏光层203的透射轴方向与水平方向的夹角为0度；当第一偏光层201的透射轴方向与水平方向的夹角为0度时，第二偏光层203的透射轴方向与水平方向的夹角为90度。
在本实施例中，液晶显示基板202内具有介电各向异性和光学各向异性的液晶材料，以及用于产生电场以驱动液晶材料的像素电极和公共电极。液晶显示基板的显示模式可以为ADS模式、TN模式等。TN模式为目前显示领域最有代表性的显示模式，在TN模式下液晶材料中的液晶分子成螺旋式排布，底层液晶分子和顶层液晶分子之间的夹角为90度。像素电极与TFT(Thin Film Transistor，薄膜晶体管)相连。像素电极和公共电极可以垂直或者水平设置，以使它们能够产生垂直或者水平方向的电场。当像素电极和公共电极设置于液晶材料两侧彼此相对的基板上时，可产生垂直电场；当像素电极和公共电极设置于同一基板上时，可产生水平电场。
在本实施例中，相位差膜片204为一种单轴相位差膜片，由单轴双折射晶体构成。相位差膜片204的厚度为90nm(纳米)～320nm，在实际应用时，相位差膜片204通常为四分之一波片或二分之一波片等。由物理学中单轴双折射晶体的性质可知，相位差膜片204可通过改变入射光的相位，进而改变入射光的偏振方向。单轴双折射晶体延迟的相位差为：
Figure PCTCN2015086246-appb-000002
其中，Δφ为单轴双折射晶体延迟的相位差，λ为入射光的波长，no为寻常光的折射率，ne为非寻常光的折射率，d为单轴双折射晶体的厚度。
参见图9，本发明实施例提供的显示面板还可以包括第三偏光层205，该第三偏光层205的透射轴方向与第一偏光层201的透射轴方向互相垂直。当第一偏光层201的透射轴方向与水平方向的夹角为90度时，第三偏光层的透射轴方向与水平方向的夹角为0度；当第一偏光层201的透射轴方向与水平方向的夹角为0度时，第三偏光层的透射轴方向与水平方向的夹角为90度。由图9可知，第一偏光层201设置于液晶显示基板202的入光侧，第二偏光层203设置于第一偏光层201的入光侧，第三偏光层205设置于液晶显示基板202的出光侧，此时相位差膜片204设置于第一偏光层201的入光侧和第二偏光层203的出光侧之间。
图10为根据本发明一个实施例示出的窄视角模式。参见图10，以第一偏光层201的透射轴方向与水平方向的夹角为0度、第二偏光层203的透射轴方向与水平方向的夹角为90度、第三偏光层205的透射轴方向与水平方向的夹角为90度、相位差膜片204为四分之一波片为例。当自然光通过第二偏光层203入射到如图10所示的显示面板时，自然光变为偏振方向与水平方向夹角为90度的第一线偏振光，当第一线偏振光经过相位差膜片204之后，第一线偏振光的偏振方向将发生变化，得到偏振方向与水平方向成一定夹角的第二偏振光，当第二偏振光通过第一偏光层201之后，第二偏振光中仅偏振方向与第一偏光层201的透射轴方向平行的光分量可通过第一偏光层201，如果将通过 第一偏光层201的光分量称为第三偏振光，则第三偏振光的偏振方向与水平方向的夹角为0度，当第三偏振光通过液晶显示基板202时，在液晶分子的作用下，第三偏振光的偏振方向旋转90度，得到第四偏振光，此时第四偏振光的偏振方向与水平方向的夹角为90度。当第四偏振光通过第三偏光层205时，第四偏振光的偏振方向与第三偏光层205的透射轴方向平行，可通过第三偏光层205，此时显示面板以窄视角模式运行，仅视角垂直于显示面板的用户可观看到显示面板中的内容。
基于图9所示的显示面板，本发明实施例提供的显示面板还可以包括光学基板206，该光学基板具有保护显示面板不被损坏、增加入射光的透射率等作用。该光学基板206可以为触摸板，还可以为保护玻璃，本发明实施例不对光学基板206作具体的限定。参见图11，光学基板206可以设置于第三偏光层205的出光侧。
另外，为了控制显示面板上的辉度分布，相位差膜片204的光轴方向与水平方向的夹角可根据需要选取适当的数值，如可选取0°～45°中的任一角度。
本发明实施例提供的显示面板，在现有的显示面板基础上，设置了第二偏光层及相位差膜片，使得偏振方向平行于第二偏光层的透射轴方向的线偏振光才能从显示面板中射出。因此，视角垂直于显示面板的用户可观看到显示面板中的内容，而视角为其他方向的用户却无法观看到显示面板中的内容，因而有效地保护了用户的隐私。
如图2(A)所示，本发明实施例还提供了一种显示面板，该显示面板包括：第一偏光层201、显示基板202、第二偏光层203及相位差膜片204。本实施例以显示基板202为OLED显示基板为例。其中，第一偏光层201设置于OLED显示基板202的出光侧，第二偏光层203设置于第一偏光层201的出光侧，相位差膜片204设置于第一偏光层201的出光侧与第二偏光层203的入光侧之间。
在显示领域，偏光层通常由一个偏光片组成。由于偏光片具有透射轴，仅允许偏振方向与透射轴方向平行的入射光出射，因此，当入射光通过偏光层时，若入射光的偏振方向与偏光层的透射轴方向平行，则入射光可全部通过偏光层；若入射光的偏振方向与偏光层的透射轴方向垂直，则入射光无法通过偏光层；若入射光的偏振方向与偏光层 的透射轴方向成一定夹角，则入射光的部分光分量可通过偏光层，且该部分光分量的偏振方向平行于偏光层的透射轴方向。另外，偏光层还具有良好的吸收、散射及反射特性，可通过吸收、散射、反射等作用将不能透射的入射光隐藏，以控制图像的显示效果。
由于本实施例中涉及到多个偏光层，为了便于对这些偏光层加以区分，本实施例根据各个偏光层在显示面板中所在位置，将偏光层划分为第一偏光层201及第二偏光层203。在本实施例中，第一偏光层201的透射轴方向与第二偏光层203的透射轴方向互相垂直，当第一偏光层201的透射轴方向与水平方向的夹角为90度时，第二偏光层203的透射轴方向与水平方向的夹角为0度；当第一偏光层201的透射轴方向与水平方向的夹角为0度时，第二偏光层203的透射轴方向与水平方向的夹角为90度。
在本实施例中，OLED显示基板具有自发光、高响应速度、高色域、广视角、超薄、低功耗等优点，可广泛应用于照明、大尺寸电视、柔性手机等中。
在本实施例中，相位差膜片204为一种单轴相位差膜片，由单轴双折射晶体构成。相位差膜片204的厚度为90nm(纳米)～320nm，在实际应用时，相位差膜片204通常为四分之一波片或二分之一波片等。由物理学中单轴双折射晶体的性质可知，相位差膜片204可通过改变入射光的相位，进而改变入射光的偏振方向。单轴双折射晶体延迟的相位差为：
Figure PCTCN2015086246-appb-000003
其中，Δφ为单轴双折射晶体延迟的相位差，λ为入射光的波长，no为寻常光的折射率，ne为非寻常光的折射率，d为单轴双折射晶体的厚度。
图12为根据本发明一个实施例示出的窄视角模式。参见图12，以第一偏光层201的透射轴方向与水平方向的夹角为90度、第二偏光层203的透射轴方向与水平方向的夹角为0度、相位差膜片204为四分之一波片为例。当从OLED显示基板出射的光通过第一偏光层201时，自然光变为偏振方向与水平方向夹角为90度的第一线偏振光，当第一 线偏振光经过相位差膜片204之后，得到偏振方向与水平方向成一定夹角的第二偏振光，当第二偏振光通过第二偏光层203时，由于第二偏振光的偏振方向与第二偏光层203的透射轴方向不平行，第二偏振光中仅偏振方向与第二偏光层203的透射轴方向平行的光分量可通过第二偏光层203，此时显示器以窄视角模式运行，仅视角垂直于显示面板的用户可观看到显示面板中的内容。
基于图2(A)所示的显示面板，本发明实施例提供的显示面板还可以包括光学基板206，该光学基板具有保护显面板不被损坏、增加入射光的透射率等作用。该光学基板206可以为触摸板，还可以为保护玻璃，本发明实施例不对光学基板206作具体的限定。参见图13，光学基板206可以设置于第二偏光层203的出光侧。参见图14，光学基板206还可设置于第一偏光层201的出光侧与相位差膜片204之间。
另外，为了控制显示面板上的辉度分布，相位差膜片204的光轴方向与水平方向的夹角可根据需要选取适当的数值，如可选取0°～45°中的任一角度。
本发明实施例提供的显示面板，在现有的显示面板基础上，设置了第二偏光层及相位差膜片，使得偏振方向平行于第二偏光层的透射轴方向的线偏振光才能从显示面板中射出，因此，视角垂直于显示面板的用户可观看到显示面板中的内容，而视角为其他方向的用户却无法观看到显示面板中的内容，因而有效地保护了用户的隐私。
本发明实施例还提供了一种显示装置，该显示装置包括显示面板，该显示面板可以为上述图2(A)至图6以及图9至图14中任一附图所示的显示面板。在实际应用中，该显示装置可以为智能手机、平板电脑、智能电视等具有显示屏幕的设备。
需要说明的是：上述实施例提供的显示面板在进行显示时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要将上述功能分配至不同的功能模块完成，即，将显示面板的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的显示面板实施例属于同一构思，这里不再赘述。
本领域普通技术人员可以理解，实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介 质可以是只读存储器，磁盘或光盘等。
以上所述仅为本发明的部分实施例，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (12)

  1. 一种显示面板，所述显示面板包括：第一偏光层、显示基板、第二偏光层及相位差膜片；
    所述第一偏光层设置于所述显示基板的一侧，且所述第一偏光层设置于所述第二偏光层与所述显示基板之间，所述第一偏光层的透射轴方向与所述第二偏光层的透射轴方向互相垂直；
    所述相位差膜片设置于所述第一偏光层与所述第二偏光层之间。
  2. 根据权利要求1所述的显示面板，其中，所述显示基板为液晶显示基板，所述液晶显示基板的显示模式为高级超维场转换ADS模式或扭曲向列TN模式。
  3. 根据权利要求2所述的显示面板，还包括第三偏光层；
    其中，所述第一偏光层设置于所述显示基板的出光侧，所述第二偏光层设置于所述第一偏光层的出光侧；
    所述第三偏光层设置于所述显示基板的入光侧，所述第三偏光层的透射轴方向与所述第一偏光层的透射轴方向互相垂直。
  4. 根据权利要求2所述的显示面板，还包括第三偏光层；
    其中，所述第一偏光层设置于所述显示基板的入光侧，所述第二偏光层设置于所述第一偏光层的入光侧；
    所述第三偏光层设置于所述显示基板的出光侧，所述第三偏光层的透射轴方向与所述第一偏光层的透射轴方向互相垂直。
  5. 根据权利要求1所述的显示面板，其中，所述显示基板为有机发光二极管OLED显示基板。
  6. 根据权利要求5所述的显示面板，其中，所述第一偏光层设置于所述显示基板的出光侧，所述第二偏光层设置于所述第一偏光层的出光侧。
  7. 根据权利要求3或6所述的显示面板，还包括光学基板；
    其中，所述光学基板设置于所述第二偏光层的出光侧或设置于所述第一偏光层的出光侧与所述相位差膜片之间。
  8. 根据权利要求4所述的显示面板，还包括光学基板；
    其中，所述光学基板设置于所述第三偏光层的出光侧。
  9. 根据权利要求7或8所述的显示面板，其中，所述光学基板为 触摸板或保护玻璃。
  10. 根据权利要求1所述的显示面板，其中，所述相位差膜片为单轴相位差膜片。
  11. 根据权利要求1所述的显示面板，其中，所述相位差膜片的厚度为90nm～320nm。
  12. 一种显示装置，所述显示装置包括如上述权利要求1至11中任一权利要求所述的显示面板。
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