WO2017128725A1 - 显示面板及其工作方法、和显示装置 - Google Patents

显示面板及其工作方法、和显示装置 Download PDF

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Publication number
WO2017128725A1
WO2017128725A1 PCT/CN2016/098535 CN2016098535W WO2017128725A1 WO 2017128725 A1 WO2017128725 A1 WO 2017128725A1 CN 2016098535 W CN2016098535 W CN 2016098535W WO 2017128725 A1 WO2017128725 A1 WO 2017128725A1
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Prior art keywords
light
liquid crystal
polarization direction
substrate
layer
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PCT/CN2016/098535
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English (en)
French (fr)
Inventor
王新星
姚继开
黄华
Original Assignee
京东方科技集团股份有限公司
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Priority to US15/512,427 priority Critical patent/US10409106B2/en
Publication of WO2017128725A1 publication Critical patent/WO2017128725A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133536—Reflective polarizers
    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0056—Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell substrates
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/30—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/64—Normally black display, i.e. the off state being black

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a display panel and a method for operating the same, and a display device.
  • the liquid crystal display products used in the current smart wearable devices generally adopt a liquid crystal display panel of a Normally White (NW) mode, and the liquid crystal display panel in the normally white mode exhibits a white state when not in operation, that is, : Light transmission when no voltage is applied, resulting in low contrast of the screen displayed on the liquid crystal display panel.
  • NW Normally White
  • the present invention provides a display panel and a method for operating the same, and a display device for solving the screen displayed by the liquid crystal display panel when the liquid crystal display panel in the prior art is in a white state when not in operation.
  • the problem of low contrast is a problem of low contrast.
  • the present invention provides a display panel including a first substrate and a second substrate disposed opposite to each other, a liquid crystal layer disposed between the first substrate and the second substrate, and a liquid crystal layer facing the first substrate An orthogonal layer is disposed on one side of the first substrate, and a first absorption layer is disposed on a side of the first substrate facing away from the liquid crystal layer;
  • the liquid crystal layer is configured to transmit light of a first polarization direction when an electric field is not applied, and convert the incident light of the first polarization direction into an emitted light of a second polarization direction when the electric field is applied, the first polarization direction and The second polarization directions are perpendicular to each other;
  • the orthogonal polarizing layer is configured to transmit light in a first polarization direction and to reflect light in a second polarization direction;
  • the first absorbing layer is for absorbing light incident thereon.
  • the orthogonal polarization layer comprises a plurality of grating elements arranged in parallel and forming an array of grating elements.
  • the constituent material of the first absorption layer comprises a black ink.
  • the present invention further provides a display device comprising a backlight module and any of the above display panels, wherein the backlight module is disposed on a side of the second substrate of the display panel facing away from the liquid crystal layer, and the backlight module is used for the backlight module A backlight is provided when the ambient light intensity is below a predetermined intensity.
  • the backlight module includes a light source and a light guide plate disposed on a side of the second substrate facing away from the liquid crystal layer, and the light source is disposed on a light incident side of the light guide plate.
  • the display device further includes a cover plate rotatably connected to the display panel by a first rotating shaft;
  • the cover plate is rotatable about the first rotation axis to a side of the first substrate of the display panel facing away from the liquid crystal layer, such that the first surface of the cover plate and the first substrate Relatively disposed, at this time, the first surface of the cover plate is closer to the liquid crystal layer than the second surface thereof;
  • the cover plate is further rotatable about the first rotation axis to a side of the second substrate of the display panel facing away from the liquid crystal layer, such that the second side of the cover plate and the second The substrates are disposed opposite each other, and at this time, the second surface of the cover plate is closer to the liquid crystal layer than the first surface thereof.
  • the first absorbing layer is disposed on a first surface of the cover plate, and a second absorbing layer is disposed on a second surface of the cover plate, the second absorbing layer is configured to absorb incident Light to it.
  • the constituent material of the second absorption layer comprises a black ink.
  • the cover plate includes a first sub-cover and a second sub-cover disposed opposite to each other, and a control circuit board is disposed between the first sub-cover and the second sub-cover, the control The circuit board is connected to the display panel by a bonding structure, for example, a surface of the first sub-cover facing away from a side of the control circuit board is a first side of the cover, the second sub A surface of the cover plate facing away from a side of the control circuit board is a second side of the cover plate.
  • the present invention also provides a method for operating a display panel, the display panel includes a first substrate and a second substrate disposed opposite to each other, and the first substrate and the second substrate are disposed a liquid crystal layer, an orthogonal polarizing layer is disposed on a side of the first substrate facing the liquid crystal layer, and a first absorption layer is disposed on a side of the first substrate facing away from the liquid crystal layer;
  • the working method includes:
  • the liquid crystal layer transmits light of a first polarization direction
  • the orthogonal polarization layer transmits light of a first polarization direction
  • the liquid crystal layer converts the incident first polarization direction light into the emitted second polarization direction light, and the orthogonal polarization layer reflects the second polarization direction light, the first polarization direction and The second polarization directions are perpendicular to each other, and the liquid crystal layer converts the incident light of the second polarization direction into the light of the first polarization direction that is emitted;
  • the first absorbing layer absorbs light incident thereon.
  • the present invention has the following advantageous effects.
  • the display panel includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer is disposed between the first substrate and the second substrate.
  • An orthogonal polarizing layer is disposed on a side of the first substrate facing the liquid crystal layer, and a first absorption layer is disposed on a side of the first substrate facing away from the liquid crystal layer.
  • the liquid crystal layer transmits light of a first polarization direction
  • the orthogonal polarization layer transmits light of a first polarization direction.
  • the liquid crystal layer converts the incident first polarization direction light into the emitted second polarization direction light, and the orthogonal polarization layer reflects the second polarization direction light, the first polarization direction and The second polarization directions are perpendicular to each other.
  • the first absorbing layer absorbs light incident thereon.
  • the liquid crystal display device provided by the invention is in a normally black mode, and the liquid crystal display device in the normally black mode has a black state when the liquid crystal display device is in an inoperative state, thereby improving the contrast of the display screen.
  • FIG. 1 is a schematic structural view of a display panel according to a first embodiment of the present invention
  • FIG. 2 and FIG. 3 are schematic diagrams of the display panel shown in FIG. 1 when it is displayed outdoors in the normally black mode;
  • FIG. 4 and FIG. 5 are schematic diagrams of the display panel shown in FIG. 1 when the dark room is displayed under the normally black mode;
  • FIG. 6 is a schematic diagram showing a mirror display of a display device in a dark state region in which the internal light intensity of the display panel is lower than the external light intensity according to the second embodiment of the present invention
  • FIG. 7 is a schematic diagram showing a mirror display of a display device in a bright region where the internal light intensity of the display panel is higher than the external light intensity according to the second embodiment of the present invention.
  • FIGS. 6 and FIG. 9 are schematic diagrams showing two unfolded structures of the display device shown in FIGS. 6 and 7.
  • FIG. 10 is a flowchart of a method for operating a display panel according to a third embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a display panel according to a first embodiment of the present invention.
  • the display panel includes a first substrate 101 and a second substrate 102 disposed opposite to each other, and a liquid crystal layer 103 is disposed between the first substrate 101 and the second substrate 102 .
  • the liquid crystal layer 103 includes an Advanced Super Dimension Switch-Liquid Crystal (ADS-LC).
  • ADS-LC Advanced Super Dimension Switch-Liquid Crystal
  • An orthogonal polarization layer 104 is disposed on a side of the first substrate 101 facing the liquid crystal layer 103, and a first absorption layer 105 is disposed on a side of the first substrate 101 facing away from the liquid crystal layer 103. Since the liquid crystal layer 103 is provided, the display panel in this embodiment may also be referred to as a liquid crystal display panel.
  • the position of the first absorbing layer 105 is not fixed, and it is not necessarily disposed on the side of the first substrate 101 facing away from the liquid crystal layer 103, and may be changed according to actual needs.
  • the display panel in this embodiment is configured to implement a Normally Black (abbreviated as NB) mode, and the first absorption layer 105 is disposed on a side of the first substrate 101 facing away from the liquid crystal layer 103, and is disposed on the display panel.
  • NB Normally Black
  • the display situation in the normal black mode is described in detail below.
  • the display panel in the normally black mode exhibits a black state when it is not in operation, that is, it does not transmit light when no voltage is applied.
  • first absorbing layer 105 can also be placed at other locations for other functions.
  • first absorbing layer 105 is disposed on the cover, as described in the second embodiment below.
  • the orthogonal polarization layer 104 may be a Wire-Grid Polarizer (WGP), and the wire grid polarizer is a light for transmitting a specific polarization direction while being reflected and the specific polarization direction. Optics of light in orthogonal polarization directions.
  • the wire grid polarizer includes a plurality of grating elements that are disposed in parallel and form an array of grating elements.
  • the wire grid polarizer is capable of reflecting light rays having an electric field vector parallel to the grating elements while transmitting light rays perpendicular to the grating elements.
  • the first absorbing layer 105 is a black ink layer, in other words, the constituent material of the first absorbing layer 105 includes a black ink.
  • the liquid crystal layer 103 is configured to transmit light of a first polarization direction when an electric field is not applied, and convert the incident light of the first polarization direction into the light of the second polarization direction when the electric field is applied.
  • the first polarization direction and the second polarization direction are perpendicular to each other.
  • the orthogonal polarization layer 104 is for transmitting light in a first polarization direction and reflecting light in a second polarization direction.
  • the first absorbing layer 105 serves to absorb light incident thereon.
  • FIG. 2 and FIG. 3 are schematic diagrams showing the display panel of FIG. 1 in an outdoor display mode in a normally black mode, wherein a polarizing plate 107 and a guide are sequentially disposed on a side of the second substrate 102 facing away from the liquid crystal layer 103.
  • Light board 106 Referring to FIG. 2, when no electric field is applied, the ambient light passes through the light guide plate 106 and the polarizer 107 to form light having a first polarization direction, and the liquid crystal layer 103 transmits light in a first polarization direction, the orthogonal polarization layer 104.
  • the light of the first polarization direction is transmitted, and the light of the first polarization direction is incident on the first absorption layer 105, and is absorbed by the first absorption layer 105, so that the display panel assumes a normally black state.
  • the liquid crystal layer 103 corresponds to a ⁇ /2 phase retardation film for converting the incident first polarization direction light into the emitted second polarization direction light, the first polarization direction and the second polarization direction. Vertical to each other.
  • the orthogonal polarization layer 104 reflects the light of the second polarization direction. Then, the liquid crystal layer 103 converts the incident light of the second polarization direction into the light of the first polarization direction, and the light of the first polarization direction passes through the light guide plate 106 and the polarizer 107, thereby realizing the display function. It can be seen that the display panel provided by this embodiment is In the outdoor environment, it is in the normal black mode, and when it is not working, it is in a black state, thereby improving the contrast of the display screen.
  • FIG. 4 and FIG. 5 are schematic diagrams showing the display panel of FIG. 1 in a dark room display under a normally black mode, wherein a polarizing plate 107 and a guide are sequentially disposed on a side of the second substrate 102 facing away from the liquid crystal layer 103.
  • the light plate 106 and the light source 108 are disposed on the light incident side of the light guide plate 106.
  • the light provided by the light source 108 passes through the polarizer 107 to form light having a first polarization direction, and the liquid crystal layer 103 transmits light of a first polarization direction, and the orthogonal polarization layer 104 transmits Light rays of the first polarization direction, the light of the first polarization direction is incident on the first absorption layer 105, and is absorbed by the first absorption layer 105, so that the display panel assumes a normally black state.
  • the light supplied from the light source 108 passes through the polarizer 107 to form light having a first polarization direction.
  • the liquid crystal layer 103 corresponds to a ⁇ /2 phase retardation film for converting the incident first polarization direction light into the emitted second polarization direction light, the first polarization direction and the second polarization direction.
  • the orthogonal polarization layer 104 reflects the light of the second polarization direction.
  • the liquid crystal layer 103 converts the incident light of the second polarization direction into the light of the first polarization direction, and the light of the first polarization direction passes through the polarizer 107, thereby realizing the display function.
  • the display panel provided in this embodiment is in a normally black mode in a dark room environment, and exhibits a black state in an inoperative state, thereby improving the contrast of the display screen.
  • the display panel provided in this embodiment includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer is disposed between the first substrate and the second substrate, and a side of the first substrate facing the liquid crystal layer is disposed
  • the orthogonal polarizing layer is provided with a first absorption layer on a side of the first substrate facing away from the liquid crystal layer. When no electric field is applied, the liquid crystal layer transmits light of a first polarization direction, and the orthogonal polarization layer transmits light of a first polarization direction.
  • the liquid crystal layer converts the incident first polarization direction light into the emitted second polarization direction light, and the orthogonal polarization layer reflects the second polarization direction light, the first polarization direction and The second polarization directions are perpendicular to each other.
  • the first absorbing layer absorbs light incident thereon.
  • the embodiment provides a liquid crystal display panel of a normally black mode, and the liquid crystal display panel in the normally black mode exhibits a black state when not in operation, thereby improving the contrast of the display screen.
  • FIG. 6 is a schematic diagram showing a mirror display of a display device in a dark state where the internal light intensity of the display panel is lower than the external light intensity according to the second embodiment of the present invention
  • FIG. 7 is a second embodiment of the present invention.
  • the display device includes a backlight module and a display panel provided by the first embodiment.
  • the display panel includes a backlight module and a display panel provided by the first embodiment.
  • the backlight module is disposed on a side of the second substrate of the display panel facing away from the liquid crystal layer, and the backlight module is configured to provide a backlight when the ambient light intensity is lower than a predetermined intensity.
  • the backlight module includes a light source 108 and a light guide plate 106.
  • the light guide plate 106 is disposed on a side of the second substrate 102 facing away from the liquid crystal layer 103, and the light source 108 is disposed on the light guide plate. 106 on the light side.
  • the display device further includes a cover plate 109 rotatably connected to the display panel through the first rotating shaft 201, and the cover plate 109 can be rotated around the first rotating shaft 201.
  • the cover plate 109 To the side of the first substrate 101 of the display panel facing away from the liquid crystal layer 103, so that the first surface of the cover plate 109 is disposed opposite to the first substrate 101.
  • the cover plate 109 The first side is closer to the liquid crystal layer 103 than the second side.
  • the cover plate 109 is further rotatable about the first rotating shaft 201 to a side of the second substrate 102 of the display panel facing away from the liquid crystal layer 103, so that the second side of the cover plate 109 is The second substrate 102 is oppositely disposed.
  • the second surface of the cover plate 109 is closer to the liquid crystal layer 103 than the first surface thereof (as shown in FIGS. 6 and 7).
  • the first absorbing layer 105 is disposed on the first surface of the cover plate 109 for absorbing light incident thereon
  • the second absorbing layer 202 is disposed on the second surface of the cover plate 109.
  • the second absorption layer 202 is for absorbing light incident thereon.
  • the first absorption layer 105 is located on a side of the first substrate 101 facing away from the liquid crystal layer, and the cover plate 109
  • the second absorption layer 202 is located on a side of the light guide plate 106 facing away from the liquid crystal layer, so that the first absorption layer 105 and the first
  • the position of the second absorbing layer 202 changes with the rotation of the cover plate 109, and normal display and mirror display can be realized.
  • the two-sided display function shown, the specific implementation of the double-sided display function is described below.
  • the second absorption layer 202 is a black ink layer, in other words, the constituent material of the second absorption layer 202 includes black ink.
  • a case where the first surface of the cover plate 109 is disposed opposite to the first substrate 101 is referred to as a normal display, and a second surface of the cover plate 109 is disposed opposite to the second substrate 102.
  • the situation is called a mirror display (as shown in Figures 6 and 7).
  • the normal display is realized by the bright state and the dark state of the pixel, and the different pixels are respectively in the bright state and the dark state to form a display image.
  • the mirror display is realized by the display state and the mirror state, and different pixels can be in the display state and the mirror state to form a display image. Since the mirror is reflective and the display interferes with this reflection, the mirror effect will only appear if it is not displayed. Since the display is equivalent to the dark state in the normal display, the dark state and the bright state in the normal display correspond to the mirror state and the display state, respectively, in the mirror display.
  • the display panel is in a dark state, which is equivalent to the display panel being in a non-lighting state, and the internal light intensity of the display panel is lower than the external light intensity.
  • the orthogonal polarization layer 104 transmits light of a first polarization direction among the external light rays, and reflects light of a second polarization direction among the external light rays, and the liquid crystal layer 103 transmits the light of the first polarization direction, and then, The light of the first polarization direction is absorbed by the polarizer 107 or the second absorption layer 202. At this time, the liquid crystal layer 103 makes the light provided by the light source 108 impenetrable, so that the display panel assumes a mirror state.
  • the display panel is in a bright state, which is equivalent to the display panel being in a light-emitting state, and the internal light intensity of the display panel is higher than the external light intensity.
  • the orthogonal polarization layer 104 transmits light of a first polarization direction among the external light rays, and reflects light of a second polarization direction among the external light rays, and the liquid crystal layer 103 transmits the light of the first polarization direction, and then, The light of the first polarization direction is absorbed by the polarizer 107 or the second absorption layer 202. At this time, the liquid crystal layer 103 allows the light provided by the light source 108 to be transmitted, so that the display panel assumes a display state.
  • the mirror display function of the display device provided by this embodiment enables the user to view both the display screen and the reflected image, such as himself. Therefore, the display device provided in this embodiment The device can be used in a dressing room, a recreation area or a car display.
  • FIG. 8 and 9 are schematic views showing two unfolded structures of the display device shown in Figs. 6 and 7.
  • the cover plate 109 is rotatably connected to the display panel 203 through a first rotating shaft 201
  • the strap 204 is rotatably connected to the display panel 203 through a second rotating shaft 205.
  • the strap 204 is used to rotate the cover plate 109 to the side of the first substrate 101 of the display panel facing away from the liquid crystal layer 103 or the back of the second substrate 102 of the display panel to the liquid crystal layer 103.
  • the cover plate 109 is fixed on one side.
  • the cover plate 109 includes a first sub-cover and a second sub-cover disposed oppositely, and a control circuit board is disposed between the first sub-cover and the second sub-cover, and the control circuit board passes a bonding structure is connected to the display panel.
  • a surface of the first sub-cover facing away from a side of the control circuit board is a first surface of the cover plate 109
  • the second sub-cover The surface facing away from one side of the circuit board is the second side of the cover plate 109.
  • the display panel includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer is disposed between the first substrate and the second substrate, and the liquid crystal layer of the first substrate faces the liquid crystal layer.
  • An orthogonal polarizing layer is disposed on one side, and a first absorption layer is disposed on a side of the first substrate facing away from the liquid crystal layer. When no electric field is applied, the liquid crystal layer transmits light of a first polarization direction, and the orthogonal polarization layer transmits light of a first polarization direction.
  • the liquid crystal layer converts the incident first polarization direction light into the emitted second polarization direction light, and the orthogonal polarization layer reflects the second polarization direction light, the first polarization direction and The second polarization directions are perpendicular to each other.
  • the first absorbing layer absorbs light incident thereon.
  • the embodiment provides a liquid crystal display device in a normally black mode. When the liquid crystal display device in the normally black mode is in an inoperative state, the display panel assumes a black state, thereby improving the contrast of the screen displayed by the display panel.
  • FIG. 10 is a flowchart of a method for operating a display panel according to a third embodiment of the present invention.
  • the display panel includes a first substrate and a second substrate disposed opposite to each other, a liquid crystal layer is disposed between the first substrate and the second substrate, and orthogonal polarization is disposed on a side of the first substrate facing the liquid crystal layer a layer, a first absorption layer disposed on a side of the first substrate facing away from the liquid crystal layer.
  • the working method includes steps 1001 to 1003.
  • Step 1001 When no electric field is applied, the liquid crystal layer transmits light of a first polarization direction, and the orthogonal polarization layer transmits light of a first polarization direction.
  • Step 1002 When an electric field is applied, the liquid crystal layer converts the incident first polarization direction light into the emitted second polarization direction light, and the orthogonal polarization layer reflects the second polarization direction light, the first The polarization direction is perpendicular to the second polarization direction, and the liquid crystal layer converts the incident second polarization direction light into the emitted first polarization direction light.
  • Step 1003 The first absorption layer absorbs light incident thereon.
  • the liquid crystal layer 103 transmits light in a first polarization direction.
  • the orthogonal polarization layer 104 transmits light of a first polarization direction, and the light of the first polarization direction is incident on the first absorption layer 105, and is absorbed by the first absorption layer 105, so that the display panel assumes a normally black state.
  • the display panel provided in this embodiment is in a normally black mode in an outdoor environment, and exhibits a black state in an inoperative state, thereby improving the contrast of the display screen.
  • the light provided by the light source 108 passes through the polarizer 107 to form light having a first polarization direction, and the liquid crystal layer 103 transmits light in a first polarization direction.
  • the cross-polarization layer 104 transmits light of a first polarization direction, and the light of the first polarization direction is incident on the first absorption layer 105, and is absorbed by the first absorption layer 105, so that the display panel assumes a normally black state.
  • the display panel provided in this embodiment is in a normally black mode in a darkroom environment, and exhibits a black state in an inoperative state, thereby improving the contrast of the display screen.
  • the liquid crystal layer 103 corresponds to a ⁇ /2 phase retardation film for converting the incident first polarization direction light into the emitted second polarization direction light, the first polarization direction and the second polarization direction.
  • the orthogonal polarization layer 104 reflects the light of the second polarization direction.
  • the liquid crystal layer 103 converts the incident light of the second polarization direction into the light of the first polarization direction that is emitted, the first Light in a polarization direction passes through the polarizer 107 and the light guide plate 106, thereby realizing a display function.
  • the liquid crystal layer 103 corresponds to a ⁇ /2 phase retardation film for converting the incident first polarization direction light into the emitted second polarization direction light, the first polarization direction and the second polarization direction.
  • the orthogonal polarization layer 104 reflects the light of the second polarization direction.
  • the liquid crystal layer 103 converts the incident light of the second polarization direction into the light of the first polarization direction, and the light of the first polarization direction passes through the polarizer 107 and the light guide plate 106, thereby realizing the display function.
  • the display panel includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer is disposed between the first substrate and the second substrate, the first substrate An orthogonal polarizing layer is disposed on a side facing the liquid crystal layer, and a first absorption layer is disposed on a side of the first substrate facing away from the liquid crystal layer.
  • the liquid crystal layer transmits light of a first polarization direction
  • the orthogonal polarization layer transmits light of a first polarization direction.
  • the liquid crystal layer converts the incident first polarization direction light into the emitted second polarization direction light, and the orthogonal polarization layer reflects the second polarization direction light, the first polarization direction and The second polarization directions are perpendicular to each other.
  • the first absorbing layer absorbs light incident thereon.
  • the liquid crystal display panel provided in this embodiment is in a normally black mode, and the liquid crystal display panel in the normally black mode exhibits a black state when not in operation, thereby improving the contrast of the display screen.

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Abstract

一种显示面板及其工作方法、和一种显示装置，所述显示面板包括相对设置的第一基板（101）和第二基板（102），第一基板（101）与第二基板（102）之间设置有液晶层（103），第一基板（101）的面向液晶层（103）的一侧上设置有正交偏振层（104），第一基板（101）的背向液晶层（103）的一侧上设置有第一吸收层（105）。当不加载电场时，液晶层（103）透射第一偏振方向的光线，正交偏振层（104）透射第一偏振方向的光线。当加载电场时，液晶层（103）将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，正交偏振层（104）反射第二偏振方向的光线，第一偏振方向与第二偏振方向相互垂直。第一吸收层（105）吸收入射至其上的光线。该处于常黑模式的液晶显示装置在不工作状态时其显示面板呈现黑态，从而提高了显示画面的对比度。

Description

显示面板及其工作方法、和显示装置 技术领域
本发明涉及显示技术领域，尤其涉及显示面板及其工作方法，和显示装置。
背景技术
随着智能可穿戴设备的日益发展，人们对智能可穿戴设备的功能集成化要求越来越高。
然而，目前的智能可穿戴设备所使用的液晶显示产品一般采用常白(Normally White，简称为NW)模式的液晶显示面板，处于常白模式的液晶显示面板在不工作状态时呈现白态，即：不施加电压时透光，导致液晶显示面板所显示的画面的对比度低。
发明内容
为解决上述问题，本发明提供一种显示面板及其工作方法、和一种显示装置，用于解决现有技术中液晶显示面板在不工作状态时呈现白态而导致液晶显示面板所显示的画面的对比度低的问题。
为此，本发明提供一种显示面板，包括相对设置的第一基板和第二基板，所述第一基板与所述第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层；
所述液晶层用于当不加载电场时透射第一偏振方向的光线，当加载电场时将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直；
所述正交偏振层用于透射第一偏振方向的光线，而且反射第二偏振方向的光线；
所述第一吸收层用于吸收入射至其上的光线。
可选的，所述正交偏振层包括多个光栅元件，所述多个光栅元件平行设置并形成光栅元件阵列。
可选的，所述第一吸收层的构成材料包括黑色油墨。
本发明还提供一种显示装置，包括背光模组和任一上述显示面板，所述背光模组设置在所述显示面板的第二基板的背向液晶层的一侧，所述背光模组用于当环境光强度低于预定强度时提供背光源。
可选的，所述背光模组包括光源和导光板，所述导光板设置在所述第二基板的背向液晶层的一侧，所述光源设置在所述导光板的入光侧。
可选的，所述显示装置还包括盖板，所述盖板通过第一旋转轴可旋转地连接至所述显示面板；
所述盖板能够围绕所述第一旋转轴旋转至位于所述显示面板的第一基板的背向所述液晶层的一侧，以使所述盖板的第一面与所述第一基板相对设置，此时，所述盖板的第一面相比其第二面更接近所述液晶层；
所述盖板还能够围绕所述第一旋转轴旋转至位于所述显示面板的第二基板的背向所述液晶层的一侧，以使所述盖板的第二面与所述第二基板相对设置，此时，所述盖板的第二面相比其第一面更接近所述液晶层。
可选的，所述第一吸收层设置在所述盖板的第一面之上，所述盖板的第二面之上设置有第二吸收层，所述第二吸收层用于吸收入射至其上的光线。
可选的，所述第二吸收层的构成材料包括黑色油墨。
可选的，所述盖板包括相对设置的第一子盖板和第二子盖板，所述第一子盖板与所述第二子盖板之间设置有控制电路板，所述控制电路板通过邦定结构与所述显示面板连接，例如，所述第一子盖板的背向所述控制电路板的一侧的表面为所述盖板的第一面，所述第二子盖板的背向所述控制电路板的一侧的表面为所述盖板的第二面。
本发明还提供一种显示面板的工作方法，所述显示面板包括相对设置的第一基板和第二基板，所述第一基板与所述第二基板之间设置 有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层；
所述工作方法包括：
当不加载电场时，所述液晶层透射第一偏振方向的光线，所述正交偏振层透射第一偏振方向的光线；
当加载电场时，所述液晶层将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述正交偏振层反射第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直，所述液晶层再将入射的第二偏振方向的光线转换为出射的第一偏振方向的光线；
所述第一吸收层吸收入射至其上的光线。
本发明具有下述有益效果。
本发明提供的显示面板及其工作方法、显示装置中，所述显示面板包括相对设置的第一基板和第二基板，所述第一基板与所述第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层。当不加载电场时，所述液晶层透射第一偏振方向的光线，所述正交偏振层透射第一偏振方向的光线。当加载电场时，所述液晶层将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述正交偏振层反射第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。所述第一吸收层吸收入射至其上的光线。本发明提供的液晶显示装置处于常黑模式，处于常黑模式的液晶显示装置在不工作状态时其显示面板呈现黑态，从而提高了显示画面的对比度。
附图说明
图1为本发明的第一实施例提供的一种显示面板的结构示意图；
图2和图3为图1所示的显示面板在常黑模式之下进行户外显示时的示意图；
图4和图5为图1所示的显示面板在常黑模式之下进行暗室显示时的示意图；
图6为本发明的第二实施例提供的一种显示装置在显示面板的内部光强低于外部光强的暗态区域中的镜面显示示意图；
图7为本发明的第二实施例提供的一种显示装置在显示面板的内部光强高于外部光强的亮态区域中的镜面显示示意图；
图8和图9为图6和图7所示的显示装置的两种展开结构示意图；
图10为本发明的第三实施例提供的一种显示面板的工作方法的流程图。
具体实施方式
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图对本发明提供的显示面板及其工作方法、显示装置进行详细描述。
第一实施例
图1为本发明的第一实施例提供的一种显示面板的结构示意图。如图1所示，所述显示面板包括相对设置的第一基板101和第二基板102，所述第一基板101与所述第二基板102之间设置有液晶层103。可选的，所述液晶层103包括高级超维场转换液晶(ADvanced Super Dimension Switch-Liquid Crystal，简称ADS-LC)。所述第一基板101的面向液晶层103的一侧上设置有正交偏振层104，所述第一基板101的背向液晶层103的一侧上设置有第一吸收层105。由于设置有液晶层103，故本实施例中的所述显示面板也可称为液晶显示面板。
需要说明的是，在实际应用中，第一吸收层105的位置并非固定不变的，其不一定设置在第一基板101的背向液晶层103的一侧上，可以根据实际需求改变第一吸收层105的位置。本实施例中的所述显示面板为实现常黑(Normally Black，简称为NB)模式，将第一吸收层105设置在第一基板101的背向液晶层103的一侧上，关于显示面板处于常黑模式时的显示情况详见下文描述。处于常黑模式的显示面板在不工作状态时呈现黑态，即：不施加电压时不透光。
当然，为了实现其它功能，也可以将第一吸收层105设置在其它位置。例如，为实现正常显示和镜面显示的双面显示功能，也可以将 第一吸收层105设置在盖板之上，详情请参见下述第二实施例。
本实施例中，所述正交偏振层104可以为线栅偏振器(Wire-Grid Polarizer，WGP)，线栅偏振器是一种用于透射特定偏振方向的光线同时反射与所述特定偏振方向正交的偏振方向的光线的光学器件。所述线栅偏振器包括多个光栅元件，所述多个光栅元件平行设置并形成光栅元件阵列。因此，线栅偏振器能够反射电场矢量平行于所述光栅元件的光线，同时透射电场矢量垂直于所述光栅元件的光线。优选的，所述第一吸收层105为黑色油墨层，换言之，所述第一吸收层105的构成材料包括黑色油墨。
本实施例中，所述液晶层103用于当不加载电场时透射第一偏振方向的光线，当加载电场时将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。所述正交偏振层104用于透射第一偏振方向的光线，而且反射第二偏振方向的光线。所述第一吸收层105用于吸收入射至其上的光线。
图2和图3为图1所示的显示面板在常黑模式之下进行户外显示时的示意图，其中，第二基板102的背向液晶层103的一侧上依次设置有偏光片107和导光板106。参见图2，当不加载电场时，环境光透过导光板106和偏光片107形成具有第一偏振方向的光线，所述液晶层103透射第一偏振方向的光线，所述正交偏振层104透射第一偏振方向的光线，所述第一偏振方向的光线入射至所述第一吸收层105，被所述第一吸收层105吸收，从而显示面板呈现常黑状态。参见图3，当加载电场时，环境光透过导光板106和偏光片107形成具有第一偏振方向的光线。此时，液晶层103相当于λ/2相位延迟膜，用于将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。由于所述第二偏振方向与所述第一偏振方向相互垂直，因此所述正交偏振层104反射第二偏振方向的光线。然后，液晶层103再将入射的第二偏振方向的光线转换为出射的第一偏振方向的光线，所述第一偏振方向的光线透过导光板106和偏光片107，从而实现显示功能。可见，本实施例提供的显示面板在 户外环境之中处于常黑模式，在不工作状态时呈现黑态，从而提高显示画面的对比度。
图4和图5为图1所示的显示面板在常黑模式之下进行暗室显示时的示意图，其中，第二基板102的背向液晶层103的一侧上依次设置有偏光片107和导光板106，光源108设置在导光板106的入光侧。参见图4，当不加载电场时，光源108提供的光线透过偏光片107形成具有第一偏振方向的光线，所述液晶层103透射第一偏振方向的光线，所述正交偏振层104透射第一偏振方向的光线，所述第一偏振方向的光线入射至所述第一吸收层105，被所述第一吸收层105吸收，从而显示面板呈现常黑状态。参见图5，当加载电场时，光源108提供的光线透过偏光片107形成具有第一偏振方向的光线。此时，液晶层103相当于λ/2相位延迟膜，用于将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。由于所述第二偏振方向与所述第一偏振方向相互垂直，因此所述正交偏振层104反射第二偏振方向的光线。然后，液晶层103再将入射的第二偏振方向的光线转换为出射的第一偏振方向的光线，所述第一偏振方向的光线透过偏光片107，从而实现显示功能。可见，本实施例提供的显示面板在暗室环境之中处于常黑模式，在不工作状态时呈现黑态，从而提高显示画面的对比度。
本实施例提供的显示面板包括相对设置的第一基板和第二基板，所述第一基板与第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层。当不加载电场时，所述液晶层透射第一偏振方向的光线，所述正交偏振层透射第一偏振方向的光线。当加载电场时，所述液晶层将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述正交偏振层反射第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。所述第一吸收层吸收入射至其上的光线。本实施例提供了一种常黑模式的液晶显示面板，处于常黑模式的液晶显示面板在不工作状态时呈现黑态，从而提高了显示画面的对比度。
第二实施例
图6为本发明的第二实施例提供的一种显示装置在显示面板的内部光强低于外部光强的暗态区域中的镜面显示示意图，图7为本发明的第二实施例提供的一种显示装置在显示面板的内部光强高于外部光强的亮态区域中的镜面显示示意图。如图6和图7所示，所述显示装置包括背光模组和第一实施例提供的显示面板，该显示面板的具体结构可参照上述第一实施例的描述，此处不再赘述。所述背光模组设置在所述显示面板的第二基板的背向液晶层的一侧，所述背光模组用于当环境光强度低于预定强度时提供背光源。可选的，所述背光模组包括光源108和导光板106，所述导光板106设置在所述第二基板102的背向液晶层103的一侧，所述光源108设置在所述导光板106的入光侧。
本实施例中，所述显示装置还包括盖板109，所述盖板109通过第一旋转轴201可旋转连接至所述显示面板，所述盖板109可以围绕所述第一旋转轴201旋转至位于所述显示面板的第一基板101的背向液晶层103的一侧，以使所述盖板109的第一面与所述第一基板101相对设置，此时，所述盖板109的第一面相比其第二面更接近液晶层103。所述盖板109还可以围绕所述第一旋转轴201旋转至位于所述显示面板的第二基板102的背向液晶层103的一侧，以使所述盖板109的第二面与所述第二基板102相对设置，此时，所述盖板109的第二面相比其第一面更接近液晶层103(如图6和图7所示)。所述第一吸收层105设置在所述盖板109的第一面之上，用于吸收入射至其上的光线，所述盖板109的第二面之上设置有第二吸收层202，所述第二吸收层202用于吸收入射至其上的光线。因此，所述盖板109的第一面与所述第一基板101相对设置时，所述第一吸收层105位于所述第一基板101的背向液晶层的一侧，所述盖板109的第二面与所述第二基板102相对设置时，所述第二吸收层202位于所述导光板106的背向液晶层的一侧，以使得所述第一吸收层105与所述第二吸收层202的位置随着所述盖板109的旋转而发生变化，能实现正常显示和镜面显 示的双面显示功能，双面显示功能的具体实现详见下文描述。优选的，所述第二吸收层202为黑色油墨层，换言之，所述第二吸收层202的构成材料包括黑色油墨。
本发明之中，将所述盖板109的第一面与所述第一基板101相对设置的情况称为正常显示，将所述盖板109的第二面与所述第二基板102相对设置的情况称为镜面显示(如图6和图7所示)。所述正常显示是通过像素的亮态和暗态来实现显示的，不同像素分别处于亮态和暗态就能够形成显示画面。所述镜面显示是通过显示态和镜面态来实现显示的，不同像素分别处于显示态和镜面态就能够形成显示画面。由于镜面是反光的，而显示会干扰这种反光，因此只有在不显示的时候才会出现镜面效果。由于不显示就相当于正常显示之中的暗态，因此正常显示之中的暗态与亮态在镜面显示之中分别对应为镜面态与显示态。
参见图6，所述显示面板处于暗态，相当于显示面板处于不发光状态，此时显示面板的内部光强低于外部光强。正交偏振层104透射外部光线之中的第一偏振方向的光线，并且反射外部光线之中的第二偏振方向的光线，所述液晶层103透射所述第一偏振方向的光线，然后，所述第一偏振方向的光线被偏光片107或者第二吸收层202吸收，此时，所述液晶层103使得光源108提供的光线无法透过，从而所述显示面板呈现镜面态。
参见图7，所述显示面板处于亮态，相当于显示面板处于发光状态，此时显示面板的内部光强高于外部光强。正交偏振层104透射外部光线之中的第一偏振方向的光线，并且反射外部光线之中的第二偏振方向的光线，所述液晶层103透射所述第一偏振方向的光线，然后，所述第一偏振方向的光线被偏光片107或者第二吸收层202吸收，此时，所述液晶层103使得光源108提供的光线能够透过，从而所述显示面板呈现显示态。
因此，不同像素分别处于显示态和镜面态可形成显示画面。本实施例提供的显示装置的镜面显示功能使得使用者既可以观看显示画面，又可以看到反射画面，例如自己。故而，本实施例提供的显示装 置可以应用于化妆间、休闲娱乐场所或者车载显示。
图8和图9为图6和图7所示显示装置的两种展开结构示意图。如图8和图9所示，所述盖板109通过第一旋转轴201可旋转连接至所述显示面板203，绑带204通过第二旋转轴205可旋转连接至所述显示面板203，所述绑带204用于在所述盖板109旋转至位于所述显示面板的第一基板101的背向液晶层103的一侧或位于所述显示面板的第二基板102的背向液晶层103的一侧时对所述盖板109进行固定。所述盖板109包括相对设置的第一子盖板和第二子盖板，所述第一子盖板与所述第二子盖板之间设置有控制电路板，所述控制电路板通过邦定结构与所述显示面板连接，例如，所述第一子盖板的背向所述控制电路板的一侧的表面为所述盖板109的第一面，所述第二子盖板的背向所述制电路板的一侧的表面为所述盖板109的第二面。
本实施例提供的显示装置之中，显示面板包括相对设置的第一基板和第二基板，所述第一基板与第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层。当不加载电场时，所述液晶层透射第一偏振方向的光线，所述正交偏振层透射第一偏振方向的光线。当加载电场时，所述液晶层将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述正交偏振层反射第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。所述第一吸收层吸收入射至其上的光线。本实施例提供了一种常黑模式的液晶显示装置，处于常黑模式的液晶显示装置在不工作状态时其显示面板呈现黑态，从而提高了显示面板所显示的画面的对比度。
第三实施例
图10为本发明的第三实施例提供的一种显示面板的工作方法的流程图。所述显示面板包括相对设置的第一基板和第二基板，所述第一基板与第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层。
如图10所示，所述工作方法包括步骤1001至1003。
步骤1001、当不加载电场时，所述液晶层透射第一偏振方向的光线，所述正交偏振层透射第一偏振方向的光线。
步骤1002、当加载电场时，所述液晶层将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述正交偏振层反射第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直，所述液晶层再将入射的第二偏振方向的光线转换为出射的第一偏振方向的光线。
步骤1003、所述第一吸收层吸收入射至其上的光线。
参见图2，在户外环境中，当不加载电场时，环境光透过导光板106和偏光片107形成具有第一偏振方向的光线，所述液晶层103透射第一偏振方向的光线，所述正交偏振层104透射第一偏振方向的光线，所述第一偏振方向的光线入射至所述第一吸收层105，被所述第一吸收层105吸收，从而显示面板呈现常黑状态。本实施例提供的显示面板在户外环境之中处于常黑模式，在不工作状态时呈现黑态，从而提高显示画面的对比度。
参见图4，在暗室环境中，当不加载电场时，光源108提供的光线透过偏光片107形成具有第一偏振方向的光线，所述液晶层103透射第一偏振方向的光线，所述正交偏振层104透射第一偏振方向的光线，所述第一偏振方向的光线入射至所述第一吸收层105，被所述第一吸收层105吸收，从而显示面板呈现常黑状态。本实施例提供的显示面板在暗室环境之中处于常黑模式，在不工作状态时呈现黑态，从而提高显示画面的对比度。
参见图3，在户外环境中，当加载电场时，环境光透过导光板106和偏光片107形成具有第一偏振方向的光线。此时，液晶层103相当于λ/2相位延迟膜，用于将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。由于所述第二偏振方向与所述第一偏振方向相互垂直，因此所述正交偏振层104反射第二偏振方向的光线。然后，液晶层103再将入射的第二偏振方向的光线转换为出射的第一偏振方向的光线，所述第 一偏振方向的光线透过偏光片107和导光板106，从而实现显示功能。
参见图5，在暗室环境中，当加载电场时，光源108提供的光线透过偏光片107形成具有第一偏振方向的光线。此时，液晶层103相当于λ/2相位延迟膜，用于将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。由于所述第二偏振方向与所述第一偏振方向相互垂直，因此所述正交偏振层104反射第二偏振方向的光线。然后，液晶层103再将入射的第二偏振方向的光线转换为出射的第一偏振方向的光线，所述第一偏振方向的光线透过偏光片107和导光板106，从而实现显示功能。
本实施例提供的显示面板的工作方法之中，所述显示面板包括相对设置的第一基板和第二基板，所述第一基板与第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层。当不加载电场时，所述液晶层透射第一偏振方向的光线，所述正交偏振层透射第一偏振方向的光线。当加载电场时，所述液晶层将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述正交偏振层反射第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直。所述第一吸收层吸收入射至其上的光线。本实施例提供的液晶显示面板处于常黑模式，处于常黑模式的液晶显示面板在不工作状态时呈现黑态，从而提高了显示画面的对比度。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (11)

  1. 一种显示面板，包括相对设置的第一基板和第二基板，所述第一基板与所述第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧上设置有正交偏振层，所述第一基板的背向液晶层的一侧上设置有第一吸收层；
    所述液晶层用于当不加载电场时透射第一偏振方向的光线，当加载电场时将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直；
    所述正交偏振层用于透射第一偏振方向的光线，而且反射第二偏振方向的光线；所述第一吸收层用于吸收入射至其上的光线。
  2. 根据权利要求1所述的显示面板，其中，所述正交偏振层包括多个光栅元件，所述多个光栅元件平行设置并形成光栅元件阵列。
  3. 根据权利要求1所述的显示面板，其中，所述第一吸收层的构成材料包括黑色油墨。
  4. 一种显示装置，包括背光模组和权利要求1至3中任一项所述的显示面板，所述背光模组设置在所述显示面板的第二基板的背向液晶层的一侧，所述背光模组用于当环境光强度低于预定强度时提供背光源。
  5. 根据权利要求4所述的显示装置，其中，所述背光模组包括光源和导光板，所述导光板设置在所述第二基板的背向液晶层的一侧，所述光源设置在所述导光板的入光侧。
  6. 根据权利要求4所述的显示装置，还包括盖板，所述盖板通过第一旋转轴可旋转地连接至所述显示面板；
    所述盖板能够围绕所述第一旋转轴旋转至位于所述显示面板的第 一基板的背向所述液晶层的一侧，以使所述盖板的第一面与所述第一基板相对设置，此时，所述盖板的第一面相比其第二面更接近所述液晶层；
    所述盖板还能够围绕所述第一旋转轴旋转至位于所述显示面板的第二基板的背向所述液晶层的一侧，以使所述盖板的第二面与所述第二基板相对设置，此时，所述盖板的第二面相比其第一面更接近所述液晶层。
  7. 根据权利要求6所述的显示装置，其中，所述第一吸收层设置在所述盖板的第一面之上，所述盖板的第二面之上设置有第二吸收层，所述第二吸收层也用于吸收入射至其上的光线。
  8. 根据权利要求7所述的显示装置，其中，所述第二吸收层的构成材料包括黑色油墨。
  9. 根据权利要求6所述的显示装置，其中，所述盖板包括相对设置的第一子盖板和第二子盖板，所述第一子盖板与所述第二子盖板之间设置有控制电路板，所述控制电路板通过邦定结构与所述显示面板连接。
  10. 根据权利要求9所述的显示装置，其中，所述第一子盖板的背向所述控制电路板的一侧的表面为所述盖板的第一面，所述第二子盖板的背向所述控制电路板的一侧的表面为所述盖板的第二面。
  11. 一种显示面板的工作方法，其特征在于，所述显示面板包括相对设置的第一基板和第二基板，所述第一基板与第二基板之间设置有液晶层，所述第一基板的面向液晶层的一侧设置有正交偏振层，所述第一基板的背向液晶层的一侧设置有第一吸收层；
    所述工作方法包括：
    当不加载电场时，所述液晶层透射第一偏振方向的光线，所述正 交偏振层透射第一偏振方向的光线；
    当加载电场时，所述液晶层将入射的第一偏振方向的光线转换为出射的第二偏振方向的光线，所述正交偏振层反射第二偏振方向的光线，所述第一偏振方向与所述第二偏振方向相互垂直，所述液晶层再将入射的第二偏振方向的光线转换为出射的第一偏振方向的光线；
    所述第一吸收层吸收入射至其上的光线。
PCT/CN2016/098535 2016-01-25 2016-11-03 显示面板及其工作方法、和显示装置 WO2017128725A1 (zh)

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