WO2017219672A1 - 一种显示装置及其控制方法 - Google Patents

一种显示装置及其控制方法 Download PDF

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Publication number
WO2017219672A1
WO2017219672A1 PCT/CN2017/072173 CN2017072173W WO2017219672A1 WO 2017219672 A1 WO2017219672 A1 WO 2017219672A1 CN 2017072173 W CN2017072173 W CN 2017072173W WO 2017219672 A1 WO2017219672 A1 WO 2017219672A1
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Prior art keywords
imaging device
display panel
focal length
liquid crystal
transparent
Prior art date
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PCT/CN2017/072173
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English (en)
French (fr)
Inventor
王晨如
董学
陈东
孙海威
董瑞君
陈丽莉
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 US15/544,776 priority Critical patent/US10451879B2/en
Publication of WO2017219672A1 publication Critical patent/WO2017219672A1/zh

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    • 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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
    • G02B26/005—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid based on electrowetting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length
    • 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
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • 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
    • G02B2027/0178—Eyeglass type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B2207/00—Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
    • G02B2207/115—Electrowetting
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/294—Variable focal length devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a display device and a control method thereof.
  • VR Virtual Reality
  • AR Augmented Reality
  • virtual reality refers to the use of computer simulation to generate a virtual world in a three-dimensional space, providing users with a simulation of the senses such as sight, hearing and touch, so that the user is as experienced.
  • Augmented reality is a technology that integrates real-world information with virtual world information. It is the physical information (such as visual information, sound, taste, touch, etc.) that is difficult to experience in a certain time and space of the real world.
  • Science and technology such as computers, superimposed after simulation, apply virtual information to the real world, and be perceived by human senses to achieve a sensory experience that transcends reality.
  • the current virtual reality display device and the augmented reality display device have different requirements for the environment and the imaging position when used, so that the virtual reality display and the augmented reality display cannot be compatible, thereby failing to satisfy the user.
  • Demand reduces the user experience.
  • Embodiments of the present invention provide a display device and a control method thereof, which can perform both a virtual reality display and an augmented reality display.
  • a display device includes a transparent display panel, an imaging device disposed on a light exiting side of the transparent display panel, and a dimming cover disposed on a side of the transparent display panel opposite the light exiting side; a transparent display panel disposed within a focal length of the imaging device; the imaging device configured to image an image displayed by the transparent display panel on a side of the transparent display panel remote from the imaging device; wherein Dimmer The light transmissive state and the light blocking state can be switched, and the dimming cover can cover the human eye field of view.
  • the imaging device is a liquid lens;
  • the liquid lens comprises a transparent casing and a conductive aqueous solution and an insulating solution encapsulated in the transparent casing;
  • the inner wall of the transparent casing is provided with a hydrophobic layer, The hydrophobic layer does not completely cover the transparent casing; wherein the conductive aqueous solution and the insulating solution have different refractive indices and are incompatible.
  • the imaging device is a liquid crystal lens.
  • the imaging device is a lens group.
  • the dimming cover is a curved dimming cover.
  • the dimming cover is a liquid crystal type dimming cover, and the dimming cover is controlled to switch between a light transmitting state and a light blocking state by controlling deflection of liquid crystal molecules.
  • the liquid crystal type dimmer cover includes a first substrate, a second substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a first substrate disposed away from the first substrate An upper polarizer on one side of the liquid crystal layer and a lower polarizer disposed on a side of the second substrate away from the liquid crystal layer; wherein a polarization direction of the upper polarizer is perpendicular to a polarization direction of the lower polarizer.
  • the dimming cover includes a moving baffle; the moving baffle is movable to make the dimming cover in a light transmitting state or a light blocking state.
  • the transparent display panel is an OLED display panel.
  • the display device further includes a controller, configured to control the dimming cover to be in a light transmitting state or a light blocking state.
  • the display device is a wearable glasses or a wearable helmet.
  • a method for controlling a display device includes: controlling a dimming cover to be in a light blocking state, and adjusting a focal length of the imaging device to perform virtual reality display; and controlling the dimming cover to be in a light transmitting state, and The focal length of the imaging device is adjusted for augmented reality display.
  • the reality shows the angle between the line connecting the top of the image and the human eye and the main optical axis of the imaging device, d is the distance between the imaging device and the human eye, and r is the tip of the transparent display panel to the main light of the imaging device.
  • the distance between the axes, L is the distance between the transparent display panel and the imaging device.
  • f 2 L ⁇ d ⁇ tan ⁇ / [r + (dL) ⁇ tan ⁇ ]; wherein ⁇
  • ⁇ the angle between the top of the image formed and the line connecting the human eye and the main optical axis of the imaging device, ⁇ ⁇ ⁇ .
  • the embodiment of the invention provides a display device and a control method thereof.
  • the focal length of the imaging device is adjusted, so that the image forming device enlarges the image displayed by the transparent display panel to make the image displayed by the transparent display panel
  • the image is integrated with the external environment.
  • the user can see the image displayed by the transparent display panel, and can also see the external environment, that is, perform augmented reality display; when the control hood is in a light-shielding state, adjust the focal length of the imaging device.
  • the image forming apparatus enlarges the image displayed on the transparent display panel. At this time, the user can only see the image of the image displayed by the transparent display panel, that is, perform virtual reality display.
  • the embodiment of the present invention can adjust the hood and the imaging device as needed, so that the display device can be virtualized.
  • the reality shows that augmented reality display can be performed to improve the user experience.
  • FIG. 1 is a schematic structural diagram 1 of a display device according to an embodiment of the present invention.
  • FIG. 2(a) is a schematic structural view 1 of a liquid lens according to an embodiment of the present invention.
  • FIG. 2(b) is a second schematic structural view of a liquid lens according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a liquid crystal type dimming cover according to an embodiment of the present invention.
  • FIG. 4 is a second schematic structural diagram of a display device according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for controlling a display device according to an embodiment of the present disclosure
  • FIG. 6(a) is a schematic structural diagram of a display device performing virtual reality display according to an embodiment of the present invention.
  • FIG. 6(b) is a schematic structural diagram of a display device performing augmented reality display according to an embodiment of the present invention.
  • An embodiment of the present invention provides a display device, as shown in FIG. 1 , including a transparent display panel 10 , an imaging device 20 disposed on a light-emitting side of the transparent display panel 10 , and a side opposite to the light-emitting side of the transparent display panel 10 .
  • the dimming cover 30; the transparent display panel 10 is placed within the focal length of the imaging device 20; the imaging device 20 is configured to image the image displayed by the transparent display panel 10 on the side of the transparent display panel 10 remote from the imaging device 20 (FIG. 1)
  • the dashed box 30 can be switched between a light transmitting state and a light blocking state, and the dimming cover 30 can cover the field of view of the human eye.
  • the principle that the display device performs virtual reality display is that the imaging device 20 images the image displayed by the transparent display panel 10, and the image formed by the imaging device 20 is away from the imaging device 20 of the transparent display panel 10. One side.
  • the dimming cover 30 is in a light-shielding state, the person can only see the image formed by the image displayed by the transparent display panel 10, and the external environment is not seen, and the virtual reality display can be performed at this time.
  • the principle that the display device performs the augmented reality display is that the imaging device 20 is transparent to the display
  • the image displayed by the panel 10 is imaged, and the image formed by the imaging device 20 is on the side of the transparent display panel 10 remote from the imaging device 20.
  • the dimming cover 30 is in a light transmitting state, the human can not only see the image formed by the image displayed by the transparent display panel 10 but also the external environment, and then the augmented reality display can be performed.
  • the augmented reality display since the image of the image displayed by the transparent display panel 10 needs to be fused with the external environment, the image displayed by the transparent display panel 10 is displayed when the augmented reality display is performed with respect to the virtual reality display. Bigger and farther. Only the image of the image displayed by the transparent display panel 10 is schematically illustrated in FIG. 1 in the dimming cover 30.
  • the image of the image displayed by the transparent display panel 10 may also be in the dimming cover 30. outer.
  • the type of the transparent display panel 10 is not limited as long as it is a self-illuminating and transparent display panel.
  • the imaging device 20 may be any suitable device capable of imaging the image displayed by the transparent display panel 10 on the side of the transparent display panel 10 remote from the imaging device 20, where the imaging device 20
  • the focal length can be adjusted. Since the transparent display panel 10 is placed within one focal length of the imaging device 20, the image formed by the imaging device 20 is an erect magnified virtual image.
  • the dimming cover 30 is switched between the light transmitting state and the light blocking state.
  • the shape and size of the dimming cover 30 are not limited as long as the dimming cover 30 can cover the field of view of the human eye.
  • the embodiments of the present invention are only schematically illustrated as partially related structures to illustrate the inventive aspects or inventive concepts of the present invention, and are not shown for other structures.
  • the structure of the transparent display panel 10, the imaging device 20, and the dimming cover 30 is fixed.
  • the fixing of the transparent display panel 10, the imaging device 20, and the dimming cover 30 is not limited.
  • the embodiment of the present invention provides a display device that adjusts the focal length of the imaging device 20 when the hood 30 is controlled to be in a light transmitting state, so that the imaging device 20 enlarges the image displayed by the transparent display panel 10 to make the transparent display panel 10 display.
  • the image of the image is integrated with the external environment.
  • the user can see the image displayed by the transparent display panel 10, and can also see the external environment, that is, perform augmented reality display; when the control hood 30 is in a light-shielding state, the adjustment is performed.
  • the focal length of the imaging device 20 causes the imaging device 20 to enlarge the image displayed on the transparent display panel 10. At this time, the user can only see the image of the image displayed by the transparent display panel 10, that is, perform virtual reality display.
  • the embodiment of the present invention can be used because the hood 30 can The switching between the light transmitting state and the light blocking state, and the focal length of the imaging device 20 can be adjusted. Therefore, the embodiment of the present invention can adjust the hood 30 and the imaging device 20 as needed, so that the display device can perform virtual reality display or Augmented reality display for improved user experience.
  • the imaging device 20 is a liquid lens; as shown in FIG. 2(a) and FIG. 2(b), the liquid lens comprises a transparent casing 01 and a conductive aqueous solution 40 and an insulating solution 50 encapsulated in the transparent casing 01.
  • the inner wall of the transparent casing 01 is provided with a hydrophobic layer 60, and the hydrophobic layer 60 does not completely cover the transparent casing 01; wherein the conductive aqueous solution 40 and the insulating solution 50 have different refractive indexes and are incompatible.
  • the conductive aqueous solution 40 and the insulating solution 50 in the liquid lens are not limited, for example, the conductive aqueous solution 40 may be water, ethanol, or the like; and the insulating solution 50 may be oil.
  • the insulating solution 50 and the conductive aqueous solution 40 are encapsulated in a transparent case 01, and the insulating solution 50 serves as a filling.
  • the embodiment of the present invention preferably has the transparent casing 01.
  • the bottom surface of the inner wall is not provided with a hydrophobic layer 60.
  • the conductive aqueous solution 40 and the insulating solution 50 are encapsulated in the transparent case 01, since the hydrophobic layer 60 does not completely cover the transparent case 01, which causes the conductive aqueous solution 40 to be bent at a place where the hydrophobic layer 60 is not formed due to the surface tension A hemispherical shape.
  • the hydrophobic ability of the hydrophobic layer 60 changes, resulting in a change in the surface tension of the conductive aqueous solution 40, which in turn causes a change in the focal length of the liquid lens.
  • the first electrode 701 may be disposed on the inner wall of the transparent casing 01
  • a second electrode 702 is disposed on the bottom surface of the transparent casing 01.
  • the second electrode 702 is in contact with the conductive aqueous solution 40
  • an insulating layer 703 is disposed between the first electrode 701 and the hydrophobic layer 60.
  • the conductive aqueous solution 40, the first electrode 701 and the insulating layer 703 constitute a capacitor, and a voltage can be applied between the conductive aqueous solution 40 and the first electrode 701.
  • the amount of electricity on both sides of the capacitor will increase, thus accumulating in The charge on both sides of the insulating layer 703 will increase, so the contact of the conductive aqueous solution 40 with the hydrophobic layer 60
  • the area will increase, i.e., the hydrophobic capacity of the hydrophobic layer 60 is reduced.
  • the capacity of the transparent casing 01 and the volume of the conductive aqueous solution 40 are constant, the liquid level of the conductive aqueous solution 40 around the inner wall of the transparent casing 01 rises, and the insulating solution 50 fills the space occupied by the original conductive aqueous solution 40.
  • the curvature of the interface between the conductive aqueous solution 40 and the insulating solution 50 is changed, eventually causing the focal length of the liquid lens to change.
  • the surface tension of the conductive aqueous solution 40 changes, that is, the shape of the conductive aqueous solution 40 changes, and the focal length of the liquid lens can be changed.
  • the embodiment of the present invention can adjust the focal length of the liquid lens required by adjusting the magnitude of the voltage as needed.
  • the focal length of the liquid lens can be changed by adjusting the voltage, so that the position and size of the image formed by the liquid lens is suitable for virtual reality display or augmented reality display, so the embodiment of the present invention does not need to change the liquid lens and the transparent display.
  • the distance between the panels 10 allows the focal length of the liquid lens to be arbitrarily adjusted, thereby simplifying the structure of the display device.
  • the imaging device 20 is a liquid crystal lens.
  • the deflection angle of the liquid crystal molecules of the liquid crystal lens can be adjusted by adjusting the voltage, thereby changing the refractive index of the liquid crystal, so that the focal length of the liquid crystal lens changes.
  • the focal length of the liquid crystal lens can be adjusted by adjusting the voltage.
  • the liquid crystal lens when performing the virtual reality display and the augmented reality display, can adjust the deflection angle of the liquid crystal molecules as needed to control the change of the refractive index of the liquid crystal, thereby adjusting the focal length of the liquid crystal lens, so that the liquid crystal lens is formed.
  • the location and size of the image is suitable for virtual reality display or augmented reality display. Since the embodiment of the present invention can adjust the focal length of the liquid crystal lens without moving the liquid crystal lens, the structure of the display device can be simplified.
  • the imaging device 20 is a lens group.
  • the lens group includes a plurality of lenses, and by combining the plurality of lenses, the image displayed by the transparent display panel 10 can be magnified and imaged.
  • the number of lenses in the lens group is not limited, and as long as a plurality of lenses are combined, the image displayed on the transparent display panel 10 can be magnified and imaged without affecting the quality of the formed image.
  • it is preferred that the focal lengths of all the lenses in the lens group are the same.
  • the image displayed by the transparent display panel 10 can be imaged by adjusting the focal length of the lens group, thereby making the lens group suitable for virtual reality display or augmented reality display.
  • the dimming cover 30 is a non-sealed type hood, and the hood 30 can cover The human eye is in sight.
  • the dimming cover 30 can be reduced in size compared with other shapes of the dimming cover 30, such as a square dimming cover, so that the volume of the display device can be reduced. It is a curved dimmer.
  • the dimming cover 30 is a liquid crystal type dimming cover, and by controlling the deflection of the liquid crystal molecules to change the polarization direction of the light transmitted through the liquid crystal molecules, thereby controlling the dimming state of the dimming cover 30 in the light transmitting state and the light blocking state. Conversion between.
  • the deflection of the liquid crystal molecules can be controlled to make the dimming cover 30 in a light blocking state; when the augmented reality display is performed, the deflection of the liquid crystal molecules can be controlled to make the dimming cover 30 in a light transmitting state.
  • the dimming cover is a liquid crystal type dimming cover, and the dimming cover 30 is controlled to be in a light transmitting state or a light blocking state by controlling the deflection of the liquid crystal molecules, so that the light of the external environment can be controlled to pass through the dimming cover. 30 or cannot pass through the dimming cover 30.
  • the liquid crystal type dimmer cover includes a first substrate 80, a second substrate 90, a liquid crystal layer 100 disposed between the first substrate 80 and the second substrate 90, and is disposed at the first
  • the substrate 80 is away from the upper polarizer 110 on the side of the liquid crystal layer 100 and the lower polarizer 120 disposed on the side of the second substrate 90 away from the liquid crystal layer 100; wherein the polarization direction of the upper polarizer 110 and the polarization direction of the lower polarizer 120 are perpendicular .
  • the principle that the liquid crystal type dimmer realizes the light transmitting state or the light blocking state is: controlling the deflection state of the liquid crystal molecules in the liquid crystal type dimming cover by voltage, so that the polarization state of the linearly polarized light incident on the liquid crystal layer 100 through the lower polarizer 120 occurs. 90° transition, so that the linearly polarized light passing through the liquid crystal layer 100 can pass through the upper polarizing plate 110, and the liquid crystal type closed cover is in a light transmitting state; when no voltage is applied to the liquid crystal type dimming cover, the liquid crystal in the liquid crystal type dimming cover The molecules do not deflect, so that the linearly polarized light passing through the lower polarizer 120 is not adjusted or affected by the liquid crystal layer 100.
  • the upper polarizer 120 passes, it is blocked by the upper polarizer 120, and the liquid crystal type closed cover is in a light blocking state.
  • the first substrate 80 and the second substrate 90 are not limited.
  • the first substrate 80 can be a counter substrate and the second substrate 90 is an array substrate.
  • the first substrate 80 is an array substrate, and the second substrate 90 is a counter substrate.
  • the dimming cover 30 includes a moving baffle; the moving baffle can be moved to make the dimming cover 30 in a light transmitting state or a light blocking state.
  • the moving baffle is opaque, for example, the moving baffle may be provided with a black coating.
  • the moving baffle should be able to cover the field of view of the human eye.
  • the dimming cover 30 is in a light transmitting state; when the moving baffle is placed, the light of the external environment is moved.
  • the dimming cover 30 is in a light blocking state.
  • the transparent display panel 10 is an OLED display panel.
  • the OLED display panel comprises an anode, a functional layer of organic material and a cathode. Based on this, the OLED display panel further includes an array substrate, the array substrate includes a thin film transistor including a source, a drain and an active layer, and a drain of the thin film transistor is electrically connected to the anode.
  • the transparent display panel 10 may also be a flexible display panel.
  • the display device further includes a controller 130 for controlling the dimming cover 30 to be in a light transmitting state or a light blocking state, and/or to control a focal length of the imaging device.
  • the controller 130 can control the dimming cover 30 to be in a light transmitting state or a light blocking state as needed.
  • the controller 130 may control the dimming cover 30 to be in a light blocking state; when the display device is used to perform augmented reality display, the controller 130 may control the dimming cover 30 to be in a light transmitting state.
  • the display device is a wearable spectacles or a wearable helmet.
  • the display device is a wearable glasses or a wearable helmet
  • the wearable glasses or the wearable helmet include the transparent display panel 10, the imaging device 20, and the above.
  • the wearable glasses may further include a frame or the like.
  • the wearable glasses or the wearable helmet can perform both a virtual reality display and an augmented reality display.
  • the embodiment of the present invention further provides a control method for the above display device, as shown in FIG. 5, including:
  • the image that can be displayed on the transparent display panel 10 is imaged on the side of the transparent display panel 10 remote from the imaging device 20, where the imaging device 20 is used.
  • the focal length can be adjusted. Since the transparent display panel 10 is placed within one focal length of the imaging device 20, the image formed by the imaging device 20 is an erect magnified virtual image.
  • the dimmer cover 30 is switched between the light transmitting state and the light blocking state.
  • the shape and size of the dimming cover 30 are not limited as long as the dimming cover 30 can cover the field of view of the human eye.
  • the embodiment of the present invention provides a control method of the display device.
  • the focal length of the imaging device 20 is adjusted, so that the image forming device 20 enlarges the image displayed by the transparent display panel 10 to make the transparent display.
  • the image of the image displayed on the panel 10 is integrated with the external environment.
  • the user can see the image displayed by the transparent display panel 10, and can also see the external environment, that is, perform augmented reality display; when the control hood 30 is in a light-shielding state
  • the focal length of the imaging device 20 is adjusted so that the imaging device 20 enlarges the image displayed on the transparent display panel 10.
  • the user can only see the image of the image displayed by the transparent display panel 10, that is, perform virtual reality display.
  • the embodiment of the present invention since the hood 30 can be switched between the light transmitting state and the light blocking state, and the focal length of the imaging device 20 can be adjusted, the embodiment of the present invention can adjust the hood 30 and the imaging device 20 as needed to make the display device Both virtual reality display and augmented reality display can be performed to improve the user experience.
  • the magnification relationship (approximation) of the imaging device 20 is: Where r' is the distance from the top end of the image displayed by the transparent display panel 10 to the main optical axis of the imaging device 20, and L' is the distance between the image displayed by the transparent display panel 10 and the imaging device 20.
  • the focal length of the imaging device 20 is smaller f 1, the image forming apparatus 20 into smaller.
  • the image formed by the imaging device 20 is small, although the user can see the image formed by the imaging device 20 and the hood 30, since the hood 30 is in a light-shielding state when the virtual reality display is performed, the user can only watch at this time.
  • the user can be immersed in the virtual reality display.
  • the focal length of the imaging device 20 can be adjusted according to the size of the image required for the virtual reality display by the display device.
  • the image formed by the imaging device 20 can just cover the field of view of the human eye, and the focal length f 1 when the virtual reality display is performed is the largest, and the imaging device is The image formed by 20 is the largest image formed by the image forming apparatus 20 when the virtual reality display is performed. Since the human eye can only see the image formed by the imaging device 20, the hood 30 is not seen (the hood 30 is in a light-shielded state), so that the user can be completely immersed in the virtual reality display, thereby improving the user experience.
  • the augmented reality display since the image formed by the imaging device 20 is larger and farther than the image formed by the virtual reality display, f 2 >f 1 , and ⁇ is Covering the angle between the top of the image of the human eye field and the line connecting the human eye and the main optical axis of the imaging device, the connection between the top end of the image formed by the imaging device 20 and the human eye and the main optical axis of the imaging device 20 When the angle between the angles is smaller than ⁇ , the image formed by the imaging device 20 will be larger and farther. At this time, the user can not only see the image formed by the imaging device 20, but also because the hood 30 is in a light transmitting state, the user can also See the outside world.
  • the focal length f 2 of the imaging device 20 can be adjusted according to the external environment, so that after the imaging device 20 images the image displayed by the transparent display panel 10, the formed image can be integrated into the external environment.

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Abstract

一种显示装置及其控制方法，涉及显示技术领域，使得既可以进行虚拟现实显示，又可以进行增强现实显示。显示装置包括透明显示面板（10）、设置在透明显示面板（10）出光侧的成像装置（20）以及设置在透明显示面板（10）的与出光侧相背一侧的调光罩（30）；透明显示面板（10）置于成像装置（20）的焦距以内；成像装置（20）用于将透明显示面板（10）显示的图像在透明显示面板（10）的远离成像装置（20）的一侧进行成像；其中，调光罩（30）可以在透光状态和遮光状态之间转换，且调光罩（30）能够覆盖人眼视场。

Description

一种显示装置及其控制方法 技术领域
本发明涉及显示技术领域，尤其涉及一种显示装置及其控制方法。
背景技术
随着显示技术的发展，越来越多不同类型的显示装置出现在人们的生活中。其中，虚拟现实(Virtual Reality，简称VR)显示装置和增强现实(Augmented Reality，简称AR)显示装置由于具有佩戴方便、实用性强等优点已受到广泛的关注。
其中，虚拟现实是指利用电脑模拟产生一个三维空间的虚拟世界，提供使用者关于视觉、听觉以及触觉等感官的模拟，让使用者如同身历其境一般。增强现实是一种将真实世界信息和虚拟世界信息集成的技术，是把原本在现实世界的一定时间空间范围内很难体验到的实体信息(例如视觉信息、声音、味道、触觉等)，通过电脑等科学技术，模拟仿真后再叠加，将虚拟的信息应用到真实世界，被人类感官所感知，从而达到超越现实的感官体验。
然而，目前的虚拟现实显示装置和增强现实显示装置，在使用时对环境的封闭要求和成像位置的要求都不相同，因而使得虚拟现实显示和增强现实显示无法兼容到一起，从而无法满足用户的需求，降低了用户的使用体验。
发明内容
本发明的实施例提供一种显示装置及其控制方法，既可以进行虚拟现实显示，又可以进行增强现实显示。
本发明的实施例采用如下技术方案：
第一方面，提供一种显示装置，包括透明显示面板、设置在所述透明显示面板出光侧的成像装置以及设置在所述透明显示面板的与出光侧相背一侧的调光罩；所述透明显示面板置于所述成像装置的焦距以内；所述成像装置用于将所述透明显示面板显示的图像在所述透明显示面板的远离所述成像装置的一侧进行成像；其中，所述调光罩 可以在透光状态和遮光状态之间转换，且所述调光罩能够覆盖人眼视场。
可选的，所述成像装置为液体透镜；所述液体透镜包括透明壳体以及封装于所述透明壳体中的导电水性溶液和绝缘溶液；所述透明壳体的内壁设有疏水层，所述疏水层不完全覆盖所述透明壳体；其中，所述导电水性溶液和所述绝缘溶液的折射率不同且不相溶。
可选的，所述成像装置为液晶透镜。
可选的，所述成像装置为透镜组。
可选的，所述调光罩为曲面型调光罩。
可选的，所述调光罩为液晶型调光罩，通过控制液晶分子的偏转以控制所述调光罩在透光状态和遮光状态之间转换。
进一步可选的，所述液晶型调光罩包括第一基板、第二基板、设置在所述第一基板和所述第二基板之间的液晶层以及设置在所述第一基板远离所述液晶层一侧的上偏光片和设置在所述第二基板远离所述液晶层一侧的下偏光片；其中，所述上偏光片的偏振方向和所述下偏光片的偏振方向垂直。
可选的，所述调光罩包括移动挡板；所述移动挡板能够移动，以使所述调光罩处于透光状态或遮光状态。
可选的，所述透明显示面板为OLED显示面板。
可选的，所述显示装置还包括控制器，用于控制所述调光罩为透光状态或遮光状态。
可选的，所述显示装置为可穿戴式眼镜或可穿戴式头盔。
第二方面，提供一种上述的显示装置的控制方法，包括：控制调光罩为遮光状态，并调节成像装置的焦距，以进行虚拟现实显示；控制所述调光罩为透光状态，并调节所述成像装置的焦距，以进行增强现实显示。
可选的，调节成像装置的焦距，以进行虚拟现实显示，包括：调节成像装置的焦距f1，使f1＝L×d×tanα/[r+(d-L)×tanα]；其中，α为虚线现实显示所成的像的顶端和人眼的连线与成像装置主光轴之间的 夹角，d为成像装置与人眼之间的距离，r为透明显示面板的顶端到成像装置主光轴之间的距离，L为透明显示面板与成像装置之间的距离。
进一步，可选的，调节成像装置的焦距f1，使f1＝L×d×tanα/[r+(d-L)×tanα]，包括：调节成像装置的焦距f1，使f1＝L×d×tanβ/[r+(d-L)×tanβ]；其中，β为正好能覆盖住人眼视场的像的顶端和人眼的连线与成像装置主光轴之间的夹角。
可选的，调节所述成像装置的焦距，以进行增强现实显示，包括：调节成像装置的焦距f2，使f2＝L×d×tanγ/[r+(d-L)×tanγ]；其中，γ为增强现实显示所成的像的顶端和人眼的连线与成像装置主光轴之间的夹角，γ＜β。
本发明实施例提供一种显示装置及其控制方法，当控制遮光罩为透光状态，调节成像装置的焦距，使成像装置将透明显示面板显示的图像放大放远以使透明显示面板显示的图像的像与外界环境相融合，此时使用者即可以看到透明显示面板显示的图像，又可以看到外界环境，即进行增强现实显示；当控制遮光罩为遮光状态时，调节成像装置的焦距，使成像装置将透明显示面板显示的图像放大，此时，使用者仅可以看到透明显示面板显示的图像的像，即进行虚拟现实显示。本发明实施例由于遮光罩可以在透光状态和遮光状态之间转换，且成像装置的焦距可以调节，因而本发明实施例可以根据需要调节遮光罩和成像装置，以使显示装置既可以进行虚拟现实显示，又可以进行增强现实显示，提高了用户体验。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种显示装置的结构示意图一；
图2(a)为本发明实施例提供的一种液体透镜的结构示意图一；
图2(b)为本发明实施例提供的一种液体透镜的结构示意图二；
图3为本发明实施例提供的一种液晶型调光罩的结构示意图；
图4为本发明实施例提供的一种显示装置的结构示意图二；
图5为本发明实施例提供的一种显示装置的控制方法的流程示意图；
图6(a)为本发明实施例提供的一种显示装置进行虚拟现实显示的结构示意图；
图6(b)为本发明实施例提供的一种显示装置进行增强现实显示的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供一种显示装置，如图1所示，包括透明显示面板10、设置在透明显示面板10出光侧的成像装置20以及设置在透明显示面板10的与出光侧相背一侧的调光罩30；透明显示面板10置于成像装置20的焦距以内；成像装置20用于将透明显示面板10显示的图像在透明显示面板10的远离成像装置20的一侧进行成像(如图1中虚线框所示)；其中，调光罩30可以在透光状态和遮光状态之间转换，且调光罩30能够覆盖人眼视场。
需要说明的是，第一，显示装置进行虚拟现实显示的原理是成像装置20对透明显示面板10显示的图像进行成像，且成像装置20所成的像在透明显示面板10的远离成像装置20的一侧。当调光罩30为遮光状态时，人只能看见透明显示面板10显示的图像通过成像装置形成的像，而看不到外界环境，此时便可以进行虚拟现实显示。
显示装置进行增强现实显示的原理的是成像装置20对透明显示 面板10显示的图像进行成像，且成像装置20所成的像在透明显示面板10的远离成像装置20的一侧。当调光罩30为透光状态时，人不仅能看见透明显示面板10显示的图像通过成像装置形成的像，还能看到外界环境，此时便可以进行增强现实显示。此处，在进行增强现实显示时，由于透明显示面板10显示的图像的像需要与外界环境相融合，因此相对虚拟现实显示，在进行增强现实显示时，透明显示面板10显示的图像的像更大更远。附图1中仅示意性地绘示出透明显示面板10显示的图像的像在调光罩30内，在进行增强现实显示时，透明显示面板10显示的图像的像也可以在调光罩30外。
第二，对于透明显示面板10的类型不进行限定，只要是自发光且透明的显示面板即可。
第三，对于成像装置20的具体结构，其可以是能将透明显示面板10显示的图像在透明显示面板10的远离成像装置20的一侧进行成像的任何合适的装置，此处，成像装置20的焦距可调节。由于透明显示面板10放置在成像装置20的一倍焦距以内，因而成像装置20所成的像是一个正立放大的虚像。
第四，对于调光罩30如何在透光状态和遮光状态之间转换不进行限定。此外，对于调光罩30的形状和大小不进行限定，只要调光罩30能够覆盖人眼视场即可。
第五，本发明实施例仅示意性地绘示出部分相关的结构以说明本发明的发明点或发明构思，对于其它结构并未绘示出。例如，固定透明显示面板10、成像装置20和调光罩30的结构。对于透明显示面板10、成像装置20和调光罩30如何固定不进行限定。
本发明实施例提供一种显示装置，当控制遮光罩30为透光状态时，调节成像装置20的焦距，使成像装置20将透明显示面板10显示的图像放大放远以使透明显示面板10显示的图像的像与外界环境相融合，此时使用者即可以看到透明显示面板10显示的图像，又可以看到外界环境，即进行增强现实显示；当控制遮光罩30为遮光状态时，调节成像装置20的焦距，使成像装置20将透明显示面板10显示的图像放大，此时，使用者仅可以看到透明显示面板10显示的图像的像，即进行虚拟现实显示。本发明实施例由于遮光罩30可以 在透光状态和遮光状态之间转换，且成像装置20的焦距可以调节，因而本发明实施例可以根据需要调节遮光罩30和成像装置20，以使显示装置既可以进行虚拟现实显示，又可以进行增强现实显示，提高了用户体验。
可选的，成像装置20为液体透镜；如图2(a)和图2(b)所示，液体透镜包括透明壳体01以及封装在透明壳体01中的导电水性溶液40和绝缘溶液50；透明壳体01的内壁设有疏水层60，疏水层60不完全覆盖透明壳体01；其中，导电水性溶液40和绝缘溶液50的折射率不同且不相溶。
在本实施例中，对于液体透镜中的导电水性溶液40和绝缘溶液50不进行限定，例如导电水性溶液40可以是水、乙醇等；绝缘溶液50可以是油。此处，绝缘溶液50和导电水性溶液40封装于透明壳体01中，绝缘溶液50起填充作用。
由于导电性水溶液40具有重力，为了便于通过电压对疏水层60的疏水能力进行控制，以使导电性水溶液40的形状改变，进而调节液体透镜的焦距，因而本发明实施例优选透明壳体01的内壁的底面不设置疏水层60。
此处，将导电水溶液40和绝缘溶液50封装在透明壳体01中，由于疏水层60不完全覆盖透明壳体01，这使得导电水溶液40由于表面张力的作用在没有疏水层60的地方弯曲成一个半球形状。通过改变电压的大小，疏水层60的疏水能力会发生改变，从而导致导电水性溶液40的表面张力发生变化，而导电水溶液40表面张力的变化进而会使得液体透镜的焦距发生变化。
基于上述，通过改变电压的大小改变疏水层60的疏水能力的具体过程为：如图2(a)和图2(b)所示，例如可以在透明壳体01的内壁设置第一电极701，在透明壳体01的底面设置第二电极702，第二电极702与导电水性溶液40接触，并在第一电极701和疏水层60之间设置绝缘层703。导电水溶液40、第一电极701以及绝缘层703构成一个电容器，可以在导电水溶液40和第一电极701之间施加电压，如果增大电容器的电压，电容器两侧极板电量将增加，这样积聚在绝缘层703两侧的电荷将增加，因此导电水溶液40与疏水层60的接触 面积将增大，即减弱了疏水层60的疏水能力。在此基础上，由于透明壳体01的容量和导电水溶液40的体积不变，导电水溶液40在透明壳体01内壁周围的液面上升，同时绝缘溶液50会填补原本导电水溶液40占用的空间，从而使得导电水溶液40和绝缘溶液50界面的弧度发生改变，最终使得液体透镜的焦距改变。如图2(a)和图2(b)所示，导电水性溶液40的表面张力发生变化，即导电水性溶液40的形状发生变化，进而可以改变液体透镜的焦距。
基于上述，本发明实施例可以根据需要通过调节电压的大小，从而调节出所需要的液体透镜的焦距。
本发明实施例通过调节电压便可以改变液体透镜的焦距，以使液体透镜所成的像的位置和大小适用于虚拟现实显示或增强现实显示，因此本发明实施例不需要改变液体透镜和透明显示面板10的之间的距离，便可以对液体透镜的焦距进行任意调节，因而简化了显示装置的结构。
可选的，成像装置20为液晶透镜。
在本实施例中，可以通过电压的调节来调节液晶透镜的液晶分子的偏转角度，从而改变液晶的折射率，使得液晶透镜的焦距发生变化。换句话说，通过调节电压可以调节液晶透镜的焦距。
本发明实施例，液晶透镜在进行虚拟现实显示和增强现实显示时，可以根据需要调节液晶分子的偏转角度，以控制液晶的折射率发生变化，从而调节液晶透镜的焦距，以使液晶透镜所成的像的位置和大小适用于虚拟现实显示或增强现实显示。由于本发明实施例无需移动液晶透镜便可以调节液晶透镜的焦距，因而可以简化了显示装置的结构。
可选的，成像装置20为透镜组。
其中，透镜组中包括多个透镜，通过将多个透镜组合在一起，可以对透明显示面板10显示的图像进行放大成像。
此外，对于透镜组中透镜的数量不进行限定，只要多个透镜组合后可以将透明显示面板10显示的图像进行放大成像且不影响所成的像的质量即可。对于透镜组中的透镜如何组合以及透镜组如何在显示装置中移动不进行限定。为了使透镜组中每个透镜所成的像的放大比 例相同以使所有透镜所成的像能够较好地结合，且保证透镜组所成的像的质量，本发明实施例优选透镜组中所有透镜的焦距均相同。
本发明实施例，通过透镜组中多个透镜组合，可以对透明显示面板10显示的图像进行成像通过调节透镜组的焦距，从而使透镜组适用于虚拟现实显示或增强现实显示。
本领域技术人员应该明白，透明显示面板10显示的图像通过成像装置20所成的像，最后应能够被人眼看见，因此调光罩30为非密闭型遮光罩，且该遮光罩30能够覆盖人眼视场。在此基础上，曲面型调光罩相对其他形状的调光罩30例如方形调光罩，体积较小，可以减小显示装置的体积，因而，本发明实施例可选的，调光罩30为曲面型调光罩。
可选的，调光罩30为液晶型调光罩，通过控制液晶分子的偏转以实现对透过液晶分子的光线的偏振方向的改变从而实现控制调光罩30在透光状态和遮光状态之间转换。
此处，当进行虚拟现实显示时，可以控制液晶分子的偏转以使调光罩30处于遮光状态；当进行增强现实显示时，可以控制液晶分子的偏转以使调光罩30处于透光状态。
在本发明的一个实施例中，调光罩为液晶型调光罩，通过控制液晶分子的偏转控制调光罩30处于透光状态或遮光状态，从而可以控制外界环境的光线能通过调光罩30或不能通过调光罩30。
进一步，可选地，如图3所示，液晶型调光罩包括第一基板80、第二基板90、设置在第一基板80和第二基板90之间的液晶层100以及设置在第一基板80远离液晶层100一侧的上偏光片110和设置在第二基板90远离液晶层100一侧的下偏光片120；其中，上偏光片110的偏振方向和下偏光片120的偏振方向垂直。
液晶型调光罩实现透光状态或遮光状态的原理为：通过电压控制液晶型调光罩中液晶分子的偏转状态，使得通过下偏光片120入射到液晶层100的线偏振光的偏振态发生90°转变，这样通过液晶层100的线偏振光可以通过上偏振片110，此时液晶型封闭罩为透光状态；当给液晶型调光罩不施加电压时，液晶型调光罩中液晶分子不会发生偏转，这样通过下偏光片120的线偏振光不受液晶层100的调节或影 响，在经过上偏光片120时，便会被上偏光片120阻挡，此时液晶型封闭罩为遮光状态。
根据本发明的本实施例，对于第一基板80和第二基板90不进行限定。例如，在一个实施例中，第一基板80可以为对盒基板，第二基板90为阵列基板。在另一实施例中，第一基板80为阵列基板，第二基板90为对盒基板。
可选的，调光罩30包括移动挡板；移动挡板能够移动，以使调光罩30处于透光状态或遮光状态。
其中，移动挡板是不透光的，例如移动挡板上可以设置有黑色涂层。此处，移动挡板应能够覆盖人眼视场。当将移动挡板抽出时，外界环境的光可以通过调光罩30进入人眼，此时，调光罩30处于透光状态；当将移动挡板放入时，外界环境的光会被移动挡板挡住，外界环境的光便不能通过调光罩30进入人眼，此时，调光罩30处于遮光状态。
由于OLED显示面板的对比度高、厚度薄、视角广、反应速度快，在本发明的一个实施例中，透明显示面板10为OLED显示面板。
其中，OLED显示面板包括阳极、有机材料功能层和阴极。基于此，OLED显示面板还包括阵列基板，阵列基板包括薄膜晶体管，薄膜晶体管包括源极、漏极和有源层，薄膜晶体管的漏极与阳极电连接。
此处，当透明显示面板10的衬底基板为柔性衬底基板时，透明显示面板10还可以为柔性显示面板。
可选的，如图4所示，上述显示装置，还包括控制器130，用于控制调光罩30为透光状态或遮光状态，和/或，控制成像装置的焦距。
其中，控制器130可以根据需要控制调光罩30为透光状态或遮光状态。当显示装置用于进行虚拟现实显示时，控制器130可以控制调光罩30为遮光状态；当显示装置用于进行增强现实显示时，控制器130可以控制调光罩30为透光状态。
可选的，显示装置为可穿戴式眼镜或可穿戴式头盔。
其中，显示装置为可穿戴式眼镜或可穿戴式头盔，可穿戴式眼镜或可穿戴式头盔除了包括上述的透明显示面板10、成像装置20以及 调光罩30外，还包括其它配件，例如可穿戴式眼镜还可以包括框架等。
当本发明实施例的显示装置为可穿戴式眼镜或可穿戴式头盔时，可穿戴式眼镜或可穿戴式头盔既可以进行虚拟现实显示，也可以进行增强现实显示。
本发明实施例还提供一种上述的显示装置的控制方法，如图5所示，包括：
S100、控制调光罩30为遮光状态，并调节成像装置20的焦距，以进行虚拟现实显示。
S101、控制调光罩30为透光状态，并调节成像装置20的焦距，以进行增强现实显示。
需要说明的是，第一，对于成像装置20的具体结构，以能将透明显示面板10显示的图像在透明显示面板10的远离成像装置20的一侧进行成像为准，此处，成像装置20的焦距可调节。由于透明显示面板10放置在成像装置20的一倍焦距以内，因而成像装置20所成的像是一个正立放大的虚像。
第二，对于调光罩30如何在透光状态和遮光状态之间转换不进行限定。在此基础上，对于调光罩30的形状和大小不进行限定，只要调光罩30能够覆盖人眼视场即可。
本发明实施例提供一种上述显示装置的控制方法，当控制遮光罩30为透光状态，调节成像装置20的焦距，使成像装置20将透明显示面板10显示的图像放大放远以使透明显示面板10显示的图像的像与外界环境相融合，此时使用者即可以看到透明显示面板10显示的图像，又可以看到外界环境，即进行增强现实显示；当控制遮光罩30为遮光状态时，调节成像装置20的焦距，使成像装置20将透明显示面板10显示的图像放大，此时，使用者仅可以看到透明显示面板10显示的图像的像，即进行虚拟现实显示。本发明实施例由于遮光罩30可以在透光状态和遮光状态之间转换，且成像装置20的焦距可以调节，因而本发明实施例可以根据需要调节遮光罩30和成像装置20，以使显示装置既可以进行虚拟现实显示，又可以进行增强现实显示，提高了用户体验。
可选的，步骤S100，具体包括：如图6(a)所示，调节成像装置的焦距f1，使f1＝L×d×tanα/[r+(d-L)×tanα]；其中，α为虚拟现实显示所成的像的顶端和人眼的连线与成像装置20主光轴之间的夹角，d为成像装置20与人眼之间的距离，r为透明显示面板10的顶端到成像装置20主光轴之间的距离，L为透明显示面板10与成像装置20之间的距离。
如图6(a)所示，成像装置20的放大关系式(近似)为：
Figure PCTCN2017072173-appb-000001
其中，r′为透明显示面板10显示的像的顶端到成像装置20主光轴之间的距离，L′为透明显示面板10显示的像到成像装置20之间的距离。
在直角三角形中，r′＝(d+L′)×tanα以及上述的成像装置20的放大关系式，可以得到：
Figure PCTCN2017072173-appb-000002
此处，根据焦距与物距和像距之间的关系公式：
Figure PCTCN2017072173-appb-000003
可得到：
Figure PCTCN2017072173-appb-000004
基于上述，通过调节成像装置20的焦距为f1，可以调节成像装置20所成的像的大小。成像装置20的焦距为f1越小，则成像装置20所成的像越小。当成像装置20所成的像较小时，虽然用户可以看到成像装置20所成的像和遮光罩30，但是由于进行虚拟现实显示时，遮光罩30为遮光状态，因而此时用户只能看到成像装置20所成的像，这样便可以使用户沉浸在虚拟现实显示中。
本发明实施例，可以根据显示装置在进行虚拟现实显示需要的像的大小对成像装置20的焦距进行调节。
进一步，可选的，调节成像装置20的焦距f1，使f1＝L×d×tanα/[r+(d-L)×tanα]，包括：调节成像装置20的焦距f1，使f1＝L×d×tanβ/[r+(d-L)×tanβ]；其中，β为正好能覆盖住人眼视场的像的顶端和人眼的连线与成像装置20主光轴之间的夹角。
本发明实施例中，当调节成像装置20的焦距f1，使成像装置20所成的像刚好能够覆盖人眼视场，此时进行虚拟现实显示时的焦距f1是最大的，且成像装置20所成的像是进行虚拟现实显示时成像装置20所成的像中最大的。由于人眼只能看成像装置20所成的像，不会看见遮光罩30(遮光罩30为遮光状态)，因而这样可以使用户完全沉浸在虚拟现实显示中，提高了用户体验。
可选的，步骤S101，具体包括：调节成像装置20的焦距，以进行增强现实显示，包括：调节成像装置20的焦距f2，使f2＝L×d×tanγ/[r+(d-L)×tanγ]；其中，γ为增强现实显示所成的像的顶端和人眼的连线与成像装置20主光轴之间的夹角，γ＜β。
此处，同理，根据焦距与物距和像距之间的关系公式：
Figure PCTCN2017072173-appb-000005
可得到：
Figure PCTCN2017072173-appb-000006
其中，在进行增强现实显示时，由于成像装置20所成的像与虚拟现实显示时所成的像相比，所成的像将更大更远，因而f2＞f1，而β为能覆盖住人眼视场的像的顶端和人眼的连线与成像装置主光轴之间的夹角，当成像装置20所成的像的顶端和人眼的连线与成像装置20主光轴之间的夹角小于β时，成像装置20所成的像将更大更远，此时，用户不仅可以看到成像装置20所成的像，由于遮光罩30为透光状态，用户还可以看到外界环境。
本发明实施例，可以根据外界环境对成像装置20的焦距f2进行调节，以使成像装置20将透明显示面板10显示的图像进行成像后， 所成的像能够融合在外界环境中。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (16)

  1. 一种显示装置，其特征在于，包括透明显示面板、设置在所述透明显示面板出光侧的成像装置以及设置在所述透明显示面板的与出光侧相背一侧的调光罩；所述透明显示面板置于所述成像装置的焦距以内；
    所述成像装置用于将所述透明显示面板显示的图像在所述透明显示面板的远离所述成像装置的一侧进行成像；
    其中，所述调光罩可以在透光状态和遮光状态之间转换，且所述调光罩能够覆盖人眼视场。
  2. 根据权利要求1所述的显示装置，其特征在于，所述成像装置为液体透镜。
  3. 根据权利要求2所述的显示装置，其特征在于，所述液体透镜包括透明壳体以及封装于所述透明壳体中的导电水性溶液和绝缘溶液；所述透明壳体的内壁设有疏水层，所述疏水层不完全覆盖所述透明壳体；
    其中，所述导电水性溶液和所述绝缘溶液的折射率不同且不相溶。
  4. 根据权利要求1所述的显示装置，其特征在于，所述成像装置为液晶透镜，配置成通过电压调节来调节液晶透镜中的液晶分子的偏转角度，从而改变液晶的折射率，使得液晶透镜的焦距发生变化。
  5. 根据权利要求1所述的显示装置，其特征在于，所述成像装置为透镜组。
  6. 根据权利要求1所述的显示装置，其特征在于，所述调光罩为曲面型调光罩。
  7. 根据权利要求1所述的显示装置，其特征在于，所述调光罩为液晶型调光罩，通过控制液晶分子的偏转以控制所述调光罩在透光状态和遮光状态之间转换。
  8. 根据权利要求7所述的显示装置，其特征在于，所述液晶型调光罩包括第一基板、第二基板、设置在所述第一基板和所述第二基板之间的液晶层以及设置在所述第一基板远离所述液晶层一侧的上偏光片和设置在所述第二基板远离所述液晶层一侧的下偏光片；
    其中，所述上偏光片的偏振方向和所述下偏光片的偏振方向垂直。
  9. 根据权利要求1所述的显示装置，其特征在于，所述调光罩包括移动挡板；
    所述移动挡板能够移动，通过挡板的移动实现对光的遮挡或透过，从而使所述调光罩处于透光状态或遮光状态。
  10. 根据权利要求1所述的显示装置，其特征在于，所述透明显示面板为OLED显示面板。
  11. 根据权利要求1所述的显示装置，其特征在于，还包括控制器，用于控制所述调光罩为透光状态或遮光状态，和/或，控制成像装置的焦距。
  12. 根据权利要求1所述的显示装置，其特征在于，所述显示装置为可穿戴式眼镜或可穿戴式头盔。
  13. 一种如权利要求1-12任一项所述的显示装置的控制方法，其特征在于，包括：
    控制调光罩为遮光状态，并调节成像装置的焦距，以进行虚拟现实显示；或
    控制所述调光罩为透光状态，并调节所述成像装置的焦距，以进行增强现实显示。
  14. 根据权利要求13所述的控制方法，其特征在于，调节成像装置的焦距，以进行虚拟现实显示，包括：
    调节成像装置的焦距f1，使f1＝L×d×tanα/[r+(d-L)×tanα]；
    其中，α为虚拟现实显示所成的像的顶端和人眼的连线与成像装置主光轴之间的夹角，d为成像装置与人眼之间的距离，r为透明显示面板的顶端到成像装置主光轴之间的距离，L为透明显示面板与成像装置之间的距离。
  15. 根据权利要求14所述的控制方法，其特征在于，调节成像装置的焦距f1，使f1＝L×d×tanα/[r+(d-L)×tanα]，包括：
    调节成像装置的焦距f1，使f1＝L×d×tanβ/[r+(d-L)×tanβ]；
    其中，β为正好能覆盖住人眼视场的像的顶端和人眼的连线与成像装置主光轴之间的夹角。
  16. 根据权利要求15所述的控制方法，其特征在于，调节所述成像装置的焦距，以进行增强现实显示，包括：
    调节成像装置的焦距f2，使f2＝L×d×tanγ/[r+(d-L)×tanγ]；
    其中，γ为增强现实显示所成的像的顶端和人眼的连线与成像装 置主光轴之间的夹角，γ＜β。
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