WO2019218856A1 - 显示装置及其显示方法 - Google Patents

显示装置及其显示方法 Download PDF

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Publication number
WO2019218856A1
WO2019218856A1 PCT/CN2019/084542 CN2019084542W WO2019218856A1 WO 2019218856 A1 WO2019218856 A1 WO 2019218856A1 CN 2019084542 W CN2019084542 W CN 2019084542W WO 2019218856 A1 WO2019218856 A1 WO 2019218856A1
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WIPO (PCT)
Prior art keywords
display panel
display
black
polarizer
white
Prior art date
Application number
PCT/CN2019/084542
Other languages
English (en)
French (fr)
Inventor
王秀荣
王蒙蒙
徐帅帅
时凌云
王光泉
陈明
Original Assignee
京东方科技集团股份有限公司
北京京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, 北京京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 US16/613,215 priority Critical patent/US20210341795A1/en
Publication of WO2019218856A1 publication Critical patent/WO2019218856A1/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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
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    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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
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    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • 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
    • G02F1/1335—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
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133601—Illuminating devices for spatial active dimming
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/52—RGB geometrical arrangements
    • 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
    • G02F2203/30—Gray scale

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a display device and a display method thereof.
  • the resolution of the VR device display is continuously increased, which brings about the contrast requirement of the VR display.
  • a display device comprising:
  • the display panel includes a plurality of display units, each display unit includes at least one pixel unit, and the black and white display panel includes at least one pixel, each pixel corresponding to the corresponding display unit, and each pixel is in the display panel
  • the orthographic projection on the top coincides with the corresponding display unit.
  • the display panel includes a first display area
  • the black and white display panel includes a second display area; an orthographic projection of the first display area on the black and white display panel falls into the second Within the display area.
  • the black and white display panel and the display panel are spaced apart by a predetermined distance.
  • the display panel is a color display panel, and each pixel unit of the display panel includes three sub-pixels of different colors.
  • the black and white display panel and the display panel are both liquid crystal display panels.
  • the display device further includes:
  • a first polarizer located on the light incident side of the black and white display panel
  • a second polarizer on the light-emitting side of the black-and-white display panel, wherein a direction of a transmission axis of the first polarizer is perpendicular to a direction of a transmission axis of the second polarizer;
  • a third polarizer on the light incident side of the display panel, wherein a direction of a transmission axis of the third polarizer is the same as a direction of a transmission axis of the second polarizer;
  • a fourth polarizer on the light-emitting side of the display panel, wherein a direction of a transmission axis of the third polarizer is perpendicular to a direction of a transmission axis of the fourth polarizer;
  • the second polarizer is located between the black and white display panel and the third polarizer.
  • the display device further includes:
  • a first polarizer located on the light incident side of the black and white display panel
  • a second polarizer located on the light incident side of the display panel, wherein a direction of a transmission axis of the first polarizer is perpendicular to a direction of a transmission axis of the second polarizer;
  • a third polarizer located on the light exiting side of the display panel, wherein a direction of a transmission axis of the third polarizer is perpendicular to a direction of a transmission axis of the second polarizer.
  • the display device further includes:
  • a driving circuit that drives the black and white display panel to display, wherein the driving circuit is configured to acquire a reference grayscale value of each display unit of the display panel, and determine the black and white display panel according to the reference grayscale value The grayscale value of the corresponding pixel.
  • the reference grayscale value is an average grayscale value of all subpixels included in the display unit or a maximum value of grayscale values of all subpixels.
  • the black and white display panel includes a plurality of pixels, the plurality of pixels are divided into a plurality of pixel groups, each pixel group includes a plurality of pixels, and the driving circuit is configured to drive each pixel group.
  • the display device further includes: an air layer disposed between the black and white display panel and the display panel.
  • the black and white display panel is a display panel or a twisted nematic TN type display panel using an advanced super dimensional field conversion technology ADS.
  • the display device is a virtual reality VR device.
  • the embodiment of the present disclosure further provides a display method of a display device, which is applied to the display device as described above, and the display method includes:
  • the displaying method further includes:
  • gray scale compensation is performed on the pixel unit in the display panel, wherein the display unit includes a plurality of sub-pixels of different colors.
  • FIG. 1A is a schematic structural diagram of a display device according to some embodiments of the present disclosure.
  • FIG. 1B is a schematic structural diagram of a display panel according to some embodiments of the present disclosure.
  • 1C is a schematic structural diagram of a black and white display panel according to some embodiments of the present disclosure.
  • FIG. 1D is a schematic structural diagram of a display device according to some embodiments of the present disclosure.
  • FIG. 2 is a schematic structural diagram of a black and white display panel according to another embodiment of the present disclosure.
  • FIG. 3 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a display device according to another embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a display method of a display device according to some embodiments of the present disclosure.
  • the increase in contrast of the VR display is limited by the alignment accuracy, and the contrast of the VR device display in the related art is low.
  • the VR device display adopts a direct-type backlight, by controlling the brightness and light of the LEDs in different areas of the direct-type backlight, the contrast of the display of the VR device can be improved.
  • the manufacturing process of the direct type backlight is complicated and the power consumption is high, so that the direct type backlight cannot be widely used in the VR device.
  • Some embodiments of the present disclosure provide a display device and a display method thereof, which can improve the contrast of the display device.
  • Some embodiments of the present disclosure provide a display device, as shown in FIGS. 1A, 1B, and 1C, including a side-in type backlight 1, a black-and-white display panel 2, and a display panel 3 that are sequentially stacked.
  • the display panel 3 includes a plurality of display units 30, each of which includes at least one pixel unit 301, and the black and white display panel 2 includes at least one pixel 20, and each pixel 20 and a corresponding display in the display panel 3
  • the units 30 are in one-to-one correspondence, and the orthographic projection of each pixel 20 of the black and white display panel 2 on the display panel 3 coincides with the corresponding display unit 30.
  • the display device includes a side-lit backlight, a black-and-white display panel 2, and a display panel 3, which are sequentially stacked.
  • the display panel 3 includes a plurality of display units 30, and each display unit 30 includes at least one pixel unit 301.
  • the pixels of the black and white display panel 2 are in one-to-one correspondence with the display unit 30 of the display panel 3, so that when the display panel 3 performs display, the display of each pixel of the black and white display panel 2 can be controlled according to the display screen of the display panel 3.
  • the gray scale changes the contrast of the display screen of the display panel 3, and improves the contrast of the display device on the premise of using the side-entry backlight.
  • the pixels in the black and white display panel are one sub-pixel.
  • the orthographic projection of each pixel 20 of the black and white display panel 2 on the display panel 3 completely coincides with the corresponding display unit 30.
  • the display panel 3 includes a first display area 311
  • the black and white display panel 2 includes a second display area 211, and a display area of the display panel 3 (the first display area 311)
  • the orthographic projection on the black-and-white display panel 2 falls within the display area (second display area 211) of the black-and-white display panel 2.
  • the display area of the black and white display panel 2 is the same as the display area of the display panel 3 (as shown in FIG. 1D) or the display area of the black and white display panel 2 is slightly larger than the display area of the display panel 3, so that the display panel can be adjusted. 3 All display areas show the contrast of the screen.
  • the pixel density of the black and white display panel 2 is much lower than the density of the pixel unit 301 of the display panel 3, and therefore, the pixels of the black and white display panel 2 correspond to at least one of the display panels 3. Pixel unit 301.
  • the black and white display panel 2 and the display panel 3 are spaced apart by a predetermined distance. This preset distance can be set as needed.
  • an air layer is disposed between the black and white display panel 2 and the display panel 3.
  • an optical film layer is disposed between the black and white display panel 2 and the display panel 3, such as a brightness enhancement film or a light transmissive film.
  • the display panel 3 is a color display panel capable of displaying a color picture
  • each pixel unit 301 of the display panel 3 includes three sub-pixels 3011 of different colors.
  • the sub-pixels 3011 of three different colors are, for example, red, green, and blue sub-pixels for color display.
  • the black and white display panel 2 and the display panel 3 are both liquid crystal display panels, and the display device further includes:
  • a first polarizer located on the light incident side of the black and white display panel 2;
  • a second polarizer on the light-emitting side of the black-and-white display panel 2, wherein a direction of a transmission axis of the first polarizer is perpendicular to a direction of a transmission axis of the second polarizer;
  • a third polarizer located on the light incident side of the display panel 3, wherein a direction of a transmission axis of the third polarizer is the same as a direction of a transmission axis of the second polarizer;
  • a fourth polarizer on the light-emitting side of the display panel 3, wherein a direction of a transmission axis of the third polarizer is perpendicular to a direction of a transmission axis of the fourth polarizer;
  • the second polarizer is located between the black and white display panel 2 and the third polarizer.
  • the black and white display panel 2 includes a first polarizer 21, an array substrate 22, a liquid crystal layer 23, a package cover 24, and a second polarizer 25, which are sequentially disposed, wherein the first polarizer 21
  • the direction of the transmission axis of the second polarizer 25 is perpendicular to each other.
  • the display panel 3 includes a third polarizer 31, an array substrate 32, a liquid crystal layer 33, a color filter substrate 34, and a fourth polarizer 35, which are sequentially disposed, wherein the third polarizer 31 and the fourth polarizer 35
  • the direction of the transmission axis is perpendicular to each other. Since the black and white display panel 2 is only used to adjust the contrast of the display screen of the display panel 3 and is not used for displaying the screen, the black and white display panel 2 does not need to be provided with a color film.
  • the package cover 24 is a glass substrate or a quartz substrate.
  • the black and white display panel 2 uses an Advanced Super Dimension Switch (ADS) display panel or a Twisted Nematic (TN) type display panel.
  • ADS Advanced Super Dimension Switch
  • TN Twisted Nematic
  • the second polarizer 25 and the third polarizer 31 are located at the boundary between the display panel 3 and the black-and-white display panel 2, and the second polarizer 25 and the third polarizer 31 have the same transmission axis direction.
  • the second polarizer 25 is adjacent to the side of the third polarizer 31 and the side away from the third polarizer 31, and the third polarizer 31 is adjacent to the side of the second polarizer 25 and away from the second polarizer.
  • the sides of 25 are all sticky.
  • the opposite sides of the second polarizer 25 and the opposite sides of the third polarizer 31 are both adhesive, facilitating the bonding of the display panel 3 and the black-and-white display panel 2.
  • only one polarizer may be disposed between the black and white display panel 2 and the display panel 3, that is, the second polarizer 25 and the first polarizer 31 are omitted.
  • the second polarizer 25 and the first polarizer 31 are omitted.
  • the black and white display panel 2 and the display panel 3 are both liquid crystal display panels, and the display device further includes:
  • a first polarizer located on the light incident side of the black and white display panel 2;
  • a second polarizer located on the light incident side of the display panel 3, wherein a direction of a transmission axis of the first polarizer is perpendicular to a direction of a transmission axis of the second polarizer;
  • a third polarizer located on the light-emitting side of the display panel 3, wherein the direction of the transmission axis of the third polarizer is perpendicular to the direction of the transmission axis of the second polarizer.
  • the display device further includes:
  • a driving circuit 4 for driving the black and white display panel 2 to display the driving circuit 4 is configured to acquire a reference grayscale value of each display unit of the display panel 3, and determine the black and white according to the reference grayscale value The grayscale value of the corresponding pixel of the display panel 2.
  • the pixels on the black-and-white display panel 2 are driven by the driving circuit 4, and the luminance values of the corresponding regions are controlled by controlling the grayscale values of each pixel on the black-and-white display panel 2.
  • the drive circuit is controlled in units of pixels of the black and white display panel 2.
  • a plurality of pixels of the black and white display panel 2 are grouped into one group and controlled by area.
  • the gray scale of the pixels on the black and white display panel 2 is adjusted in real time according to the reference gray scale value of the display unit of the corresponding display panel 3.
  • the reference grayscale value is an average grayscale value of all subpixels included in the display unit or a maximum of grayscale values of all subpixels.
  • the reference grayscale value is not limited to an average grayscale value of all subpixels included in the display unit or a maximum value of grayscale values of all subpixels, and may also be all subpixels according to the display unit Other calculation results obtained by grayscale values.
  • the grayscale values of the corresponding pixels of the black and white display panel 2 are also correspondingly lower, so that the brightness of the screen emitted by the display device is lower; when the display panel 3 is displayed
  • the grayscale value of the corresponding pixel of the black and white display panel 2 is also correspondingly increased, so that the brightness of the screen emitted by the display device is higher, and thus the contrast of the display screen of the display device can be increased.
  • the grayscale compensation processing is performed on the pixel unit of the display panel 3, so that the final displayed grayscale luminance is equivalent to the original grayscale luminance.
  • the reference gray scale value of the display unit of the display panel 3 is L220, and the brightness of the corresponding original display screen is 120 nit. Since the light transmittance of the black and white display panel 2 is not 100%, the brightness of the final output screen of the display device is low. Up to 120 nit, at this time, it is necessary to increase the display grayscale value of the display unit of the display panel 3, for example, to L230, so that the brightness of the final output screen of the display unit is 120 nit.
  • the transmittance is 80%
  • the pixel gray level of the black-and-white display panel 2 is L255, the brightness of the emitted light is 8000 nit
  • the gray level of the pixel of the black-and-white display panel 2 is L0, the brightness of the emitted light is 80 nit, and the brightness of the black-and-white display panel 2 is The contrast is 100.
  • the display device includes the black and white display panel 2 and the display panel 3
  • the pixel gray level of the display device is L255
  • the pixel gray level of the display device is L0
  • the light is emitted.
  • the display device is a VR device.
  • the technical solution of the embodiment can improve the contrast of the VR device and meet the contrast requirement of the VR device.
  • Some embodiments of the present disclosure provide a display method of a display device, as applied to the display device of any of the above, as shown in FIG. 5, the display method includes steps 510 and 520.
  • step 510 a reference grayscale value of each display unit of the display panel 3 is obtained.
  • step 520 the grayscale value of the corresponding pixel of the black and white display panel 2 is determined according to the reference grayscale value, and the black and white display panel 2 is driven to display according to the grayscale value.
  • the display device includes a side-in type backlight, a black-and-white display panel 2, and a display panel 3, which are sequentially stacked, the display panel 3 includes a plurality of display units, each display unit includes at least one pixel unit, and the black and white
  • the pixels of the display panel 2 are in one-to-one correspondence with the display unit of the display panel 3, so that when the display panel 3 is displayed, the display gray scale of the plurality of pixels of the black-and-white display panel 2 can be controlled according to the display screen of the display panel 3, and further The contrast of the display screen of the display panel 3 is changed, and the contrast of the display device is improved on the premise of using the side-entry backlight.
  • the reference grayscale value of each display unit of the display panel 3 is obtained according to the original data of the screen to be displayed of the display panel 3, and the reference grayscale value is all the sub-axes included in the display unit in the original data. a grayscale value of the corresponding grayscale value of the pixel or a grayscale value of all the subpixels, determining a grayscale value of the corresponding pixel of the black and white display panel 2 according to the reference grayscale value, and driving according to the determined grayscale value The black and white display panel 2 performs display.
  • the reference grayscale value is not limited to an average grayscale value of all subpixels included in the display unit or a maximum value of grayscale values of all subpixels, and may also be all subpixels according to the display unit Other calculation results obtained by grayscale values.
  • the grayscale values of the corresponding pixels of the black and white display panel 2 are also correspondingly lower, so that the brightness of the screen emitted by the display device is lower; when the display panel 3 is displayed
  • the grayscale value of the corresponding pixel of the black and white display panel 2 is also correspondingly increased, so that the brightness of the screen emitted by the display device is higher, and thus the contrast of the display screen of the display device can be increased.
  • the gray scale compensation processing is performed on the pixel unit of the display panel 3, so that the gray scale brightness of the final display is equivalent to the original gray. Order brightness.
  • the reference gray scale value of the display unit of the display panel 3 is L220, and the brightness of the corresponding original display screen is 120 nit. Since the light transmittance of the black and white display panel 2 is not 100%, the brightness of the final output screen of the display device is low. Up to 120 nit, at this time, it is necessary to increase the display grayscale value of the display unit of the display panel 3, for example, to L230, so that the brightness of the final output screen of the display unit is 120 nit.
  • the transmittance is 80%
  • the pixel gray level of the black-and-white display panel 2 is L255, the brightness of the emitted light is 8000 nit
  • the gray level of the pixel of the black-and-white display panel 2 is L0, the brightness of the emitted light is 80 nit, and the brightness of the black-and-white display panel 2 is The contrast is 100.
  • the display device includes the black and white display panel 2 and the display panel 3
  • the pixel gray level of the display device is L255
  • the pixel gray level of the display device is L0
  • the light is emitted.

Abstract

本公开提供了一种显示装置及其显示方法。显示装置包括：依次层叠的侧入式背光源、黑白显示面板和显示面板。所述显示面板包括多个显示单元，每一显示单元包括至少一个像素单元，所述黑白显示面板包括至少一个像素，每一像素与相应的显示单元一一对应，每一像素在所述显示面板上的正投影与对应的显示单元重合。

Description

显示装置及其显示方法
相关申请的交叉引用
本申请主张在2018年5月16日在中国提交的中国专利申请号No.201810468533.0的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示技术领域，特别是指一种显示装置及其显示方法。
背景技术
为减轻虚拟现实(Virtual Reality，VR)设备的纱窗效应，VR设备显示屏的分辨率不断提升，随之带来的是对VR显示屏对比度的要求。
发明内容
一方面，提供一种显示装置，包括：
依次层叠的侧入式背光源、黑白显示面板和显示面板；
所述显示面板包括多个显示单元，每一显示单元包括至少一个像素单元，所述黑白显示面板包括至少一个像素，每一像素与相应的显示单元一一对应，每一像素在所述显示面板上的正投影与对应的显示单元重合。
本公开一些实施例中，所述显示面板包括第一显示区域，所述黑白显示面板包括第二显示区域；所述第一显示区域在所述黑白显示面板上的正投影落入所述第二显示区域内。
本公开一些实施例中，所述黑白显示面板与所述显示面板之间间隔预设距离。
本公开一些实施例中，所述显示面板为彩色显示面板，所述显示面板的每一像素单元包括三种不同颜色的亚像素。
本公开一些实施例中，所述黑白显示面板和所述显示面板均为液晶显示面板。
本公开一些实施例中，所述显示装置还包括：
位于所述黑白显示面板入光侧的第一偏光片；
位于所述黑白显示面板出光侧的第二偏光片，其中，所述第一偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直；
位于所述显示面板入光侧的第三偏光片，其中，所述第三偏光片的透光轴方向与所述第二偏光片的透光轴方向相同；以及
位于所述显示面板出光侧的第四偏光片，其中，所述第三偏光片的透光轴方向与所述第四偏光片的透光轴方向垂直；
其中，所述第二偏光片位于所述黑白显示面板和所述第三偏光片之间。
本公开一些实施例中，所述显示装置还包括：
位于所述黑白显示面板入光侧的第一偏光片；
位于所述显示面板入光侧的第二偏光片，其中，所述第一偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直；以及
位于所述显示面板出光侧的第三偏光片，其中，所述第三偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直。
本公开一些实施例中，所述显示装置还包括：
驱动所述黑白显示面板进行显示的驱动电路，其中，所述驱动电路设置为获取所述显示面板的每一显示单元的参考灰阶值，并根据所述参考灰阶值确定所述黑白显示面板的对应像素的灰阶值。
本公开一些实施例中，所述参考灰阶值为所述显示单元包括的所有亚像素的平均灰阶值或所有亚像素的灰阶值中的最大值。
本公开一些实施例中，所述黑白显示面板包括多个像素，所述多个像素被划分为多个像素组，每个像素组包括多个像素，以及所述驱动电路设置为驱动每个像素组。
本公开一些实施例中，所述的显示装置还包括：设置在所述黑白显示面板与所述显示面板之间的空气层。
本公开一些实施例中，所述黑白显示面板为采用高级超维场转换技术ADS的显示面板或扭曲向列TN型显示面板。
本公开一些实施例中，所述显示装置为虚拟现实VR设备。
本公开实施例还提供了一种显示装置的显示方法，应用于如上所述的显 示装置，所述显示方法包括：
获取所述显示面板的每一显示单元的参考灰阶值；以及
根据所述参考灰阶值确定所述黑白显示面板的对应像素的灰阶值，并根据所确定的灰阶值驱动所述黑白显示面板进行显示。
本公开一些实施例中，所述显示方法还包括：
在所述显示面板显示中间灰阶时，对所述显示面板中的像素单元进行灰阶补偿，其中，所述显示单元包括多个不同颜色的亚像素。
附图说明
图1A为本公开一些实施例提供的显示装置的结构示意图；
图1B为本公开一些实施例提供的显示面板的结构示意图；
图1C为本公开一些实施例提供的黑白显示面板的结构示意图；
图1D为本公开一些实施例提供的显示装置的结构示意图；
图2为本公开另一些实施例提供的黑白显示面板的结构示意图；
图3为本公开另一些实施例提供的显示面板的结构示意图；
图4为本公开另一些实施例提供的显示装置的结构示意图；以及
图5为本公开一些实施例提供的显示装置的显示方法的流程图。
具体实施方式
为使本公开的实施例的技术方案更加清楚，下面将结合附图及一些实施例进行详细描述。
VR显示屏对比度的提高受限于对位精度，相关技术中VR设备显示屏的对比度较低。
如果VR设备显示屏采用直下式背光源，通过控制直下式背光源不同区域发光二极管的亮暗及开关，可以达到提升VR设备显示屏对比度的效果。但直下式背光源的制作工艺难度复杂及功耗高，使得直下式背光源不能广泛应用于VR设备中。
本公开的一些实施例提供一种显示装置及其显示方法，能够提高显示装置的对比度。
本公开一些实施例提供一种显示装置，如图1A、1B和1C所示，所述显示装置包括依次层叠的侧入式背光源1、黑白显示面板2和显示面板3。
所述显示面板3包括多个显示单元30，每一显示单元30包括至少一个像素单元301，所述黑白显示面板2包括至少一个像素20，每一像素20与所述显示面板3中对应的显示单元30一一对应，所述黑白显示面板2的每一像素20在所述显示面板3上的正投影与对应的显示单元30重合。
本实施例中，显示装置包括依次层叠的侧入式背光源、黑白显示面板2和显示面板3，所述显示面板3包括多个显示单元30，每一显示单元30包括至少一个像素单元301，所述黑白显示面板2的像素与所述显示面板3的显示单元30一一对应，这样在显示面板3进行显示时，可以根据显示面板3的显示画面控制黑白显示面板2的每个像素的显示灰阶，进而改变显示面板3显示画面的对比度，在使用侧入式背光源的前提下，提高了显示装置的对比度。
一些实施例中，黑白显示面板中的像素为一个亚像素。
一些实施例中，所述黑白显示面板2的每一像素20在所述显示面板3上的正投影与对应的显示单元30完全重合。
本公开一些实施例中，参见图1D，所述显示面板3包括第一显示区域311，所述黑白显示面板2包括第二显示区域211，所述显示面板3的显示区域(第一显示区域311)在所述黑白显示面板2上的正投影落入所述黑白显示面板2的显示区域(第二显示区域211)内。黑白显示面板2的显示区域与显示面板3的显示区域的大小相同(如图1D所示)或黑白显示面板2的显示区域比显示面板3的显示区域稍大一些，这样可以保证能够调节显示面板3全部显示区域显示画面的对比度。
本公开一些实施例中，为了防止摩尔纹的产生，黑白显示面板2的像素密度要远低于显示面板3的像素单元301的密度，因此，黑白显示面板2的像素对应显示面板3的至少一个像素单元301。
本公开一些实施例中，为了避免黑白显示面板2上的走线、薄膜晶体管以及像素分界处对显示面板3的影响，所述黑白显示面板2与所述显示面板3之间间隔预设距离，该预设距离可以根据需要设置。
本公开一些实施例中，所述黑白显示面板2与所述显示面板3之间是空气层。
本公开一些实施例中，在所述黑白显示面板2与所述显示面板3之间设置光学膜材层，比如设置一增亮膜或透光膜等。
一些实施例中，如图1B所示，所述显示面板3为彩色显示面板，能够显示彩色画面，所述显示面板3的每一像素单元301包括三种不同颜色的亚像素3011。三种不同颜色的亚像素3011比如为红色、绿色和蓝色亚像素，从而进行彩色显示。
本公开一些实施例中，所述黑白显示面板2和所述显示面板3均为液晶显示面板，所述显示装置还包括：
位于所述黑白显示面板2入光侧的第一偏光片；
位于所述黑白显示面板2出光侧的第二偏光片，其中，所述第一偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直；
位于所述显示面板3入光侧的第三偏光片，其中，所述第三偏光片的透光轴方向与所述第二偏光片的透光轴方向相同；以及
位于所述显示面板3出光侧的第四偏光片，其中，所述第三偏光片的透光轴方向与所述第四偏光片的透光轴方向垂直；
其中，所述第二偏光片位于所述黑白显示面板2和所述第三偏光片之间。
一些实施例中，如图2所示，黑白显示面板2包括依次设置的第一偏光片21、阵列基板22、液晶层23、封装盖板24和第二偏光片25，其中第一偏光片21和第二偏光片25的透光轴方向相互垂直。如图3所示，显示面板3包括依次设置的第三偏光片31、阵列基板32、液晶层33、彩膜基板34和第四偏光片35，其中第三偏光片31和第四偏光片35的透光轴方向相互垂直。由于黑白显示面板2仅是用以调节显示面板3出射显示画面的对比度，不用于显示画面，因此，黑白显示面板2无需设置彩膜。
一些实施例中，封装盖板24采用玻璃基板或石英基板。
一些实施例中，黑白显示面板2采用高级超维场转换技术(Advanced Super Dimension Switch，ADS)显示面板或扭曲向列(Twisted Nematic，TN)型显示面板。
在显示装置中，第二偏光片25和第三偏光片31位于显示面板3和黑白显示面板2的交界处，第二偏光片25和第三偏光片31的透光轴方向相同。
一些实施例中，第二偏光片25靠近第三偏光片31的侧面和远离第三偏光片31的侧面均具有粘性，第三偏光片31靠近第二偏光片25的侧面和远离第二偏光片25的侧面均具有粘性。
第二偏光片25的两相对侧面和第三偏光片31两相对侧面均具有粘性，便于将显示面板3和黑白显示面板2贴合在一起。
一些实施例中，为了降低显示装置的厚度，所述黑白显示面板2和所述显示面板3之间还可以仅设置一个偏光片，即省去第二偏光片25和第一偏光片31中的一个。
本公开一些实施例中，所述黑白显示面板2和所述显示面板3均为液晶显示面板，所述显示装置还包括：
位于所述黑白显示面板2入光侧的第一偏光片；
位于所述显示面板3入光侧的第二偏光片，所述第一偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直；以及
位于所述显示面板3出光侧的第三偏光片，所述第三偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直。
本公开一些实施例中，如图4所示，显示装置还包括：
驱动所述黑白显示面板2进行显示的驱动电路4，所述驱动电路4设置为获取所述显示面板3的每一显示单元的参考灰阶值，并根据所述参考灰阶值确定所述黑白显示面板2的对应像素的灰阶值。
通过驱动电路4驱动黑白显示面板2上的像素，通过控制黑白显示面板2上每个像素的灰阶值，控制对应区域的亮度值。
一些实施例中，驱动电路是以黑白显示面板2的像素为单位进行控制。
一些实施例中，将黑白显示面板2的多个像素分为一组，按区域进行控制。
黑白显示面板2上像素的灰阶，根据对应的显示面板3的显示单元的参考灰阶值实时进行调整。
一些实施例中，所述参考灰阶值为所述显示单元包括的所有亚像素的平 均灰阶值或所有亚像素的灰阶值中的最大值。
参考灰阶值并不局限于为所述显示单元包括的所有亚像素的平均灰阶值或所有亚像素的灰阶值中的最大值，还可以为根据所述显示单元包括的所有亚像素的灰阶值得到的其他计算结果。
当显示面板3的显示单元需要显示较低灰阶的画面时，黑白显示面板2的对应像素的灰阶值也相应较低，从而使得显示装置出射画面的亮度较低；当显示面板3的显示单元需要显示较高灰阶的画面时，黑白显示面板2的对应像素的灰阶值也相应提高，从而使得显示装置出射画面的亮度较高，因而可以增加显示装置的显示画面的对比度。
一些实施例中，为了保证最终的显示效果，在显示面板3显示中间灰阶时，对显示面板3的像素单元进行灰阶补偿处理，使得最终显示的灰阶亮度等同于原图灰阶亮度。
比如显示面板3一显示单元的参考灰阶值为L220，对应的原始显示画面亮度为120nit，由于黑白显示面板2的透光率不是100％，因此显示装置最终出射画面的亮度较低，达不到120nit，这时，需要提高显示面板3该显示单元的显示灰阶值，比如提高为L230，使得该显示单元最终出射画面的亮度为120nit。
假设侧入式背光源的亮度为10000nit，显示面板3的透过率为1.5％，则在显示装置仅包括显示面板3时，显示装置的像素单元的灰阶为L255时，发出光线的亮度为150nit，像素单元的灰阶为L0时，发出光线的亮度为0.3nit，显示装置的对比度C/R＝150/0.3＝500；则在显示装置仅包括黑白显示面板2时，黑白显示面板2的透过率为80％，黑白显示面板2的像素灰阶为L255时，发出光线的亮度为8000nit，黑白显示面板2的像素灰阶为L0时，发出光线的亮度为80nit，黑白显示面板2的对比度为100。
在显示装置同时包括黑白显示面板2和显示面板3时，显示装置的像素灰阶为L255时，发出光线的亮度为8000*1.5％＝120nit，显示装置的像素灰阶为L0时，发出光线的亮度为80*0.3/10000＝0.0024nit，显示装置整体对比度为120/0.0024＝50000，可以看出，通过本实施例的技术方案，可以将显示装置的对比度提高到万级。
一些实施例中，所述显示装置为VR设备。
由于VR设备对对比度的要求比较高，通过本实施例的技术方案，可以提高VR设备的对比度，满足VR设备对对比度的要求。
本公开一些实施例提供了一种显示装置的显示方法，应用于如上任一所述的显示装置，如图5所示，所述显示方法包括步骤510和步骤520。
步骤510中，获取所述显示面板3的每一显示单元的参考灰阶值。
步骤520中，根据所述参考灰阶值确定所述黑白显示面板2的对应像素的灰阶值，并根据所述灰阶值驱动所述黑白显示面板2进行显示。
本实施例中，显示装置包括依次层叠的侧入式背光源、黑白显示面板2和显示面板3，所述显示面板3包括多个显示单元，每一显示单元包括至少一个像素单元，所述黑白显示面板2的像素与所述显示面板3的显示单元一一对应，这样在显示面板3进行显示时，可以根据显示面板3的显示画面控制黑白显示面板2的多个像素的显示灰阶，进而改变显示面板3显示画面的对比度，在使用侧入式背光源的前提下，提高显示装置对比度。
一些实施例中，根据显示面板3待显示画面的原始数据获取所述显示面板3的每一显示单元的参考灰阶值，所述参考灰阶值为原始数据中所述显示单元包括的所有亚像素的平均灰阶值或所有亚像素的灰阶值中的最大值，根据所述参考灰阶值确定所述黑白显示面板2的对应像素的灰阶值，并根据所确定的灰阶值驱动所述黑白显示面板2进行显示。
参考灰阶值并不局限于为所述显示单元包括的所有亚像素的平均灰阶值或所有亚像素的灰阶值中的最大值，还可以为根据所述显示单元包括的所有亚像素的灰阶值得到的其他计算结果。
当显示面板3的显示单元需要显示较低灰阶的画面时，黑白显示面板2的对应像素的灰阶值也相应较低，从而使得显示装置出射画面的亮度较低；当显示面板3的显示单元需要显示较高灰阶的画面时，黑白显示面板2的对应像素的灰阶值也相应提高，从而使得显示装置出射画面的亮度较高，因而可以增加显示装置的显示画面的对比度。
一些实施例中，为了保证最终的显示效果，在显示面板3的像素单元显示中间灰阶时，对显示面板3的像素单元进行灰阶补偿处理，使得最终显示 的灰阶亮度等同于原图灰阶亮度。
比如显示面板3一显示单元的参考灰阶值为L220，对应的原始显示画面亮度为120nit，由于黑白显示面板2的透光率不是100％，因此显示装置最终出射画面的亮度较低，达不到120nit，这时，需要提高显示面板3该显示单元的显示灰阶值，比如提高为L230，使得该显示单元最终出射画面的亮度为120nit。
假设侧入式背光源的亮度为10000nit，显示面板3的透过率为1.5％，则在显示装置仅包括显示面板3时，显示装置的像素单元的灰阶为L255时，发出光线的亮度为150nit，像素单元的灰阶为L0时，发出光线的亮度为0.3nit，显示装置的对比度C/R＝150/0.3＝500；则在显示装置仅包括黑白显示面板2时，黑白显示面板2的透过率为80％，黑白显示面板2的像素灰阶为L255时，发出光线的亮度为8000nit，黑白显示面板2的像素灰阶为L0时，发出光线的亮度为80nit，黑白显示面板2的对比度为100。在显示装置同时包括黑白显示面板2和显示面板3时，显示装置的像素灰阶为L255时，发出光线的亮度为8000*1.5％＝120nit，显示装置的像素灰阶为L0时，发出光线的亮度为80*0.3/10000＝0.0024nit，显示装置整体对比度为120/0.0024＝50000，可以看出，通过上述实施例的技术方案，将显示装置的对比度提高到万级。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”或“下”时，该元件可以“直接”位于另一元件“上”或“下”，或者可以存在中间元件。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰。

Claims (15)

  1. 一种显示装置，包括：
    依次层叠的侧入式背光源、黑白显示面板和显示面板；
    所述显示面板包括多个显示单元，每一显示单元包括至少一个像素单元，所述黑白显示面板包括至少一个像素，每一像素与相应的显示单元一一对应，每一像素在所述显示面板上的正投影与对应的显示单元重合。
  2. 根据权利要求1所述的显示装置，其中，所述显示面板包括第一显示区域，所述黑白显示面板包括第二显示区域；以及，
    所述第一显示区域在所述黑白显示面板上的正投影落入所述第二显示区域内。
  3. 根据权利要求1所述的显示装置，其中，所述黑白显示面板与所述显示面板之间间隔预设距离。
  4. 根据权利要求1所述的显示装置，其中，
    所述显示面板为彩色显示面板，以及所述显示面板的每一像素单元包括三种不同颜色的亚像素。
  5. 根据权利要求1所述的显示装置，其中，所述黑白显示面板和所述显示面板均为液晶显示面板。
  6. 根据权利要求5所述的显示装置，还包括：
    位于所述黑白显示面板入光侧的第一偏光片；
    位于所述黑白显示面板出光侧的第二偏光片，其中，所述第一偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直；
    位于所述显示面板入光侧的第三偏光片，其中，所述第三偏光片的透光轴方向与所述第二偏光片的透光轴方向相同；以及
    位于所述显示面板出光侧的第四偏光片，其中，所述第三偏光片的透光轴方向与所述第四偏光片的透光轴方向垂直；
    其中，所述第二偏光片位于所述黑白显示面板和所述第三偏光片之间。
  7. 根据权利要求5所述的显示装置，还包括：
    位于所述黑白显示面板入光侧的第一偏光片；
    位于所述显示面板入光侧的第二偏光片，其中，所述第一偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直；以及
    位于所述显示面板出光侧的第三偏光片，其中，所述第三偏光片的透光轴方向与所述第二偏光片的透光轴方向垂直。
  8. 根据权利要求1所述的显示装置，还包括：
    驱动所述黑白显示面板进行显示的驱动电路，其中，所述驱动电路设置为获取所述显示面板的每一显示单元的参考灰阶值，并根据所述参考灰阶值确定所述黑白显示面板的对应像素的灰阶值。
  9. 根据权利要求8所述的显示装置，其中，所述参考灰阶值为所述显示单元包括的所有亚像素的平均灰阶值或所有亚像素的灰阶值中的最大值。
  10. 根据权利要求8所述的显示装置，其中，所述黑白显示面板包括多个像素，所述多个像素被划分为多个像素组，每个像素组包括多个像素，以及所述驱动电路设置为驱动每个像素组。
  11. 根据权利要求3所述的显示装置，还包括：设置在所述黑白显示面板与所述显示面板之间的空气层。
  12. 根据权利要求1所述的显示装置，其中，所述黑白显示面板为采用高级超维场转换技术ADS的显示面板或扭曲向列TN型显示面板。
  13. 根据权利要求1-12中任一项所述的显示装置，其中，所述显示装置为虚拟现实VR设备。
  14. 一种显示装置的显示方法，应用于如权利要求1-13中任一项所述的显示装置，包括：
    获取所述显示面板的每一显示单元的参考灰阶值；以及
    根据所述参考灰阶值确定所述黑白显示面板的对应像素的灰阶值，并根据所述灰阶值驱动所述黑白显示面板进行显示。
  15. 根据权利要求14所述的显示方法，还包括：
    在所述显示面板的显示单元显示中间灰阶时，对所述显示面板的像素单元进行灰阶补偿，其中，所述显示单元包括多种不同颜色的亚像素。
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