WO2024251198A1 - Appareil d'affichage de champ lumineux et son procédé d'attaque, et dispositif habitronique - Google Patents

Appareil d'affichage de champ lumineux et son procédé d'attaque, et dispositif habitronique Download PDF

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Publication number
WO2024251198A1
WO2024251198A1 PCT/CN2024/097749 CN2024097749W WO2024251198A1 WO 2024251198 A1 WO2024251198 A1 WO 2024251198A1 CN 2024097749 W CN2024097749 W CN 2024097749W WO 2024251198 A1 WO2024251198 A1 WO 2024251198A1
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WO
WIPO (PCT)
Prior art keywords
light
display
semi
liquid crystal
display panel
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/097749
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English (en)
Chinese (zh)
Inventor
程芳
刘玉杰
梁蓬霞
吴谦
洪涛
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Beijing ShiYan Technology Co Ltd
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Beijing ShiYan Technology Co Ltd
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Publication of WO2024251198A1 publication Critical patent/WO2024251198A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • 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
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Definitions

  • the off-axis semi-transmissive and semi-reflective structure is used to focus the light emitted by the display panel and/or the light transmitted by the display structure to the human eye.
  • the first substrate comprises: a first base substrate, a first electrode layer located on a side of the first base substrate facing the liquid crystal layer, and a first alignment layer located on a side of the first electrode layer close to the liquid crystal layer;
  • the second substrate comprises: a second base substrate, a second electrode layer located on a side of the second base substrate facing the liquid crystal layer, and a second alignment layer located on a side of the second electrode layer close to the liquid crystal layer;
  • the transmission axis of the first polarizer is different from the transmission axis of the second polarizer
  • the transmission axis of the first polarizer is 45°, and the transmission axis of the second polarizer is 135°;
  • the orientation angle of the first orientation layer is 0° and the orientation angle of the second orientation layer is 90°.
  • one of the first electrode layer and the second electrode layer includes a plurality of strip electrodes, and the other of the first electrode layer and the second electrode layer includes a surface electrode.
  • the display structure further includes: a brightness collection structure
  • the display structure is used to: in a preset display mode, adjust the transmittance of the display structure according to the brightness of the ambient light collected by the brightness collection structure.
  • the liquid crystal cell includes a light-transmitting region and a non-light-transmitting region surrounding the light-transmitting region;
  • the light field display device further includes: a light control structure located between the display panel and the off-axis transflective structure;
  • the light control structure is used to collimate and transmit the light emitted from the display panel to the off-axis semi-transmissive and semi-reflective structure.
  • the light control structure includes a plurality of micro lenses arranged in an array.
  • the display panel includes pixel groups corresponding one-to-one to the microlenses
  • the pixel group includes n pixels, where n is an integer greater than or equal to 2;
  • the orthographic projection of the microlens on the display panel covers at least a portion of the area of the pixel group corresponding to the microlens;
  • the light emitted by the pixel group passes through the microlens and reaches the off-axis semi-transmissive and semi-reflective structure to converge on the pupil of the single eye.
  • each pixel includes multiple sub-pixel units, different sub-pixel units have different light emission colors, and each sub-pixel unit includes multiple sub-pixels with the same light emission color;
  • the display panel has a first light emitting plane, and different seed pixel units have different light emitting colors on the first light emitting plane;
  • the first light exiting plane coincides with the focal planes of the plurality of micro lenses.
  • An embodiment of the present disclosure provides a driving method for a light field display device, comprising:
  • the transmittance of the display structure is controlled to be 0, so that the light emitted by the display panel reaches the off-axis semi-transmissive and semi-reflective structure and converges to the human eye;
  • the display structure is controlled to display a picture.
  • the display structure includes a brightness collection structure, and in the second display mode, controlling the transmittance of the display structure to be greater than 0 specifically includes:
  • the transmittance of the display structure is adjusted according to the brightness of the ambient light collected by the brightness collection structure.
  • a wearable device provided by an embodiment of the present disclosure includes the light field display device provided by an embodiment of the present disclosure.
  • the light field display device and its driving method, and wearable device provided by the embodiments of the present disclosure include a display structure.
  • the transmittance of the display structure is adjusted to 0, ambient light cannot pass through the display structure to reach the off-axis semi-transparent and semi-reflective structure.
  • the light emitted by the display panel reaches the off-axis semi-transparent and semi-reflective structure and converges to the human eye, thereby realizing virtual reality (VR) light field display.
  • VR virtual reality
  • the ambient light reaches the off-axis semi-transparent and semi-reflective structure through the display structure, that is, the user can see the real environment through the light field display device, and the light emitted by the display panel reaches the off-axis semi-transparent and semi-reflective structure and converges to the human eye, which can realize augmented reality (AR) light field display.
  • AR augmented reality
  • the light field display device provided by the embodiment of the present disclosure can realize the switching between VR light field display and AR light field display by adjusting the transmittance of the display structure, which increases the application scenarios of the light field display device and improves the user experience.
  • the display structure is also used to display the picture, that is, the user can also watch through the display structure, further increasing the application scenarios.
  • FIG1 is a schematic structural diagram of a light field display device provided by an embodiment of the present disclosure.
  • FIG2 is a schematic diagram of a display structure provided by an embodiment of the present disclosure.
  • FIG3 is a schematic diagram of another display structure provided by an embodiment of the present disclosure.
  • FIG4 is a schematic diagram of a structure of another display structure provided by an embodiment of the present disclosure.
  • FIG5 is a schematic diagram of a structure of another display structure provided by an embodiment of the present disclosure.
  • FIG6 is a schematic diagram of another display structure provided by an embodiment of the present disclosure.
  • FIG7 is a schematic diagram of a structure of another display structure provided by an embodiment of the present disclosure.
  • FIG8 is a schematic structural diagram of a light control structure provided by an embodiment of the present disclosure.
  • FIG9 is a schematic structural diagram of another light control structure provided by an embodiment of the present disclosure.
  • FIG10 is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure.
  • FIG11 is a schematic diagram of the structure of another display panel provided by an embodiment of the present disclosure.
  • FIG12 is a schematic diagram of the structure of another display panel provided by an embodiment of the present disclosure.
  • FIG. 13 is a schematic flow chart of a driving method for a light field display device provided in an embodiment of the present disclosure.
  • the present disclosure provides a light field display device, as shown in FIG1 , the light field display device comprises: a display panel 1, an off-axis semi-transmissive and semi-reflective structure 2 located on the light emitting side of the display panel 1, and a display structure 3 located on the side of the off-axis semi-transmissive and semi-reflective structure 2 away from the display panel 1;
  • the display structure 3 is used to: adjust its transmittance to be greater than 0, so that ambient light can pass through the display structure 3 to reach the off-axis semi-transmissive and semi-reflective structure 2; or adjust its transmittance to be 0, so that ambient light cannot pass through the display structure 3; and/or, the display structure 3 is used to display images;
  • the off-axis semi-transmissive and semi-reflective structure 2 is used to focus the light emitted from the display panel 1 and/or the light transmitted through the display structure 3 to the human eye.
  • the light field display device includes a display structure, a transparent display structure, and a transparent display structure.
  • the transmittance is 0, the ambient light cannot reach the off-axis semi-transparent and semi-reflective structure through the display structure, and the light emitted by the display panel reaches the off-axis semi-transparent and semi-reflective structure and converges to the human eye, thereby realizing virtual reality (VR) light field display.
  • VR virtual reality
  • the transmittance of the display structure When the transmittance of the display structure is adjusted to be greater than 0, the ambient light reaches the off-axis semi-transparent and semi-reflective structure through the display structure, that is, the user can view the real environment through the light field display device, and the light emitted by the display panel reaches the off-axis semi-transparent and semi-reflective structure and converges to the human eye, thereby realizing augmented reality (AR) light field display.
  • the light field display device provided in the embodiment of the present disclosure can realize the switching between VR light field display and AR light field display by adjusting the transmittance of the display structure, thereby increasing the application scenarios of the light field display device and improving the user experience.
  • the display structure is also used to display the picture, that is, the user can also watch through the display structure, further increasing the application scenarios.
  • the display structure 3 includes: a liquid crystal box 301 .
  • the liquid crystal box can also be used as a display panel to display images, that is, the display structure is also used to display images, further increasing the application scenarios of the light field display device and improving the user experience.
  • the ambient light is used as the light source for the display.
  • the liquid crystal cell 301 includes: a first substrate 3011 and a second substrate 3012 disposed opposite to each other, a liquid crystal layer 3013 located between the first substrate 3011 and the second substrate 3012, a first polarizer 3014 located on the first substrate 3011 away from the liquid crystal layer 3013, and a second polarizer 3015 located on the second substrate 3012 away from the liquid crystal layer 3013;
  • the first substrate 3011 includes: a first base substrate 30113, a first electrode layer 30111 located on the side of the first base substrate 30113 facing the liquid crystal layer 3013, and a first alignment layer 30112 located on the side of the first electrode layer 30111 close to the liquid crystal layer 3013;
  • the second substrate 3012 includes: a second base substrate 30123, a second electrode layer 30121 located on the side of the second base substrate 30123 facing the liquid crystal layer 3013, and a second alignment layer 30122 located on the side of the second electrode layer 30121 close to the liquid crystal layer 3013;
  • the transmission axis of the first polarizer 3014 is different from the transmission axis of the second polarizer 3015;
  • the red sub-pixel unit includes red sub-pixels
  • the blue sub-pixel unit includes blue sub-pixels
  • the green sub-pixel unit includes green sub-pixels.
  • the pixel includes, for example, three sub-pixel units arranged in a triangle, that is, the three sub-pixel units are arranged in rows, one row includes one sub-pixel unit, and the other row includes two sub-pixel units, and the two sub-pixel units are arranged in a staggered manner.
  • the sub-pixel unit includes only one sub-pixel.
  • the shape of the sub-pixel is a hexagon.
  • sub-pixel units included in the pixel may also be arranged in other ways, and the sub-pixels may also be in other shapes.
  • each sub-pixel unit includes a plurality of sub-pixels with the same light emission color.
  • Each sub-pixel unit includes a plurality of sub-pixels arranged along a first direction X.
  • the pixels are arranged in an array, for example, along the first direction X and the second direction Y.
  • the second direction Y is, for example, perpendicular to the first direction X.
  • the third direction Z is perpendicular to the plane where the second direction Y (not shown) and the first direction X are located.
  • the sub-pixel when the display panel is an electroluminescent display panel, the sub-pixel includes a light emitting device.
  • the light emitting device 5 includes an anode 501 , a light emitting layer 502 , and a cathode 503 which are stacked.
  • a hole injection layer, a hole transport layer, etc. may be included between the anode and the light-emitting layer, and an electron injection layer, an electron transport layer, etc. may be included between the cathode and the light-emitting layer.
  • the display panel 1 further includes:
  • the driving circuit layer 102 is located between the fourth base substrate 101 and the light emitting device 5;
  • the encapsulation layer 107 is located on the side of the light emitting device 5 facing the imaging structure (not shown), that is, on the side of the light emitting device 5 facing away from the fourth substrate 101, including a first inorganic encapsulation layer 1071 and a second inorganic encapsulation layer 1072 stacked in sequence on the side of the light emitting device 5 facing the imaging structure (that is, the side of the light emitting device 5 facing away from the fourth substrate 101);
  • the second planarization layer 108 is located on a side of the second inorganic encapsulation layer 1072 away from the first inorganic encapsulation layer 1071 .
  • the encapsulation layer is used to protect the light emitting device to prevent water and oxygen from corroding the light emitting layer of the light emitting device.
  • the material of the first inorganic encapsulation layer is, for example, silicon nitride, and the material of the second inorganic encapsulation layer is, for example, aluminum oxide.
  • the driving circuit layer 102 includes, for example, a thin film transistor TFT, and may also include a capacitor (not shown).
  • the thin film transistor TFT includes: an active layer 1021, a gate G, a source S, and a drain D.
  • the thin film transistor included in the driving circuit layer includes at least a driving transistor, and the drain D of the driving transistor is electrically connected to the anode 501 of the light emitting device 5.
  • the material of the active layer may include, for example, silicon or an oxide semiconductor.
  • the gate, the source, and the drain include, for example, metal materials.
  • the thin film transistor TFT is a top gate structure, that is, the gate G is located on the side of the active layer 1021 away from the fourth base substrate 101; the display panel 1 also includes: a buffer layer 103 located between the fourth base substrate 101 and the active layer 1021, a gate insulating layer 104 located between the active layer 1021 and the gate G, an interlayer insulating layer 105 located between the gate G and the source S and the drain D, and a third planarization layer 106 located between the source S and the drain D and the anode 501.
  • the display panel also includes A pixel definition layer 109 is located on the side of the third planarization layer 106 away from the fourth base substrate 101.
  • the pixel definition layer 109 has a first opening area 1091, and the pixel definition layer 109 covers the edge of the anode 501.
  • the orthographic projection of the first opening area 1091 on the fourth base substrate 101 falls into the anode 501.
  • the anode 501, the light-emitting layer 502, and the first opening area 1091 of the cathode 503 are stacked to form a light-emitting device.
  • the light-emitting devices corresponding to the sub-pixels of different sub-pixel units have different light-emitting colors.
  • the light-emitting color of the light-emitting device corresponds to the light-emitting color of the sub-pixel where the light-emitting device is located.
  • the light-emitting device included in the red sub-pixel emits red light
  • the light-emitting device included in the blue sub-pixel emits blue light
  • the light-emitting device included in the green sub-pixel emits green light.
  • the sub-pixel further includes: a color filter 8 .
  • the color filter is located on the side of the light emitting device away from the fourth substrate. As shown in FIG11 , when the display panel includes an encapsulation layer 107 , the color filter 8 is located on the side of the encapsulation layer 107 away from the light emitting device 5 .
  • sub-pixels of different sub-pixel units correspond to color filters of different colors.
  • the light-emitting color of the color filter corresponds to the light-emitting color of the sub-pixel where the color filter is located.
  • the red sub-pixel includes a red color filter
  • the blue sub-pixel includes a blue color filter
  • the green sub-pixel includes a green color filter.
  • the light emitting devices included in each sub-pixel in the display panel have the same color. Color conversion is achieved through the color filter to perform full-color display. For example, the light emitting devices included in each sub-pixel in the display panel emit white light. Alternatively, the light emitting devices included in each sub-pixel in the display panel may emit blue light.
  • the display panel further includes a first protective layer covering the color film.
  • Color filter 8 the light emission color of the color filter 8 corresponds to the color of the sub-pixel
  • Thin film transistor TFT located on the side of the color film 8 away from the micro lens (not shown);
  • the pixel electrode 9 is located between the thin film transistor TFT and the color filter 8 .
  • the display panel when the display panel is a liquid crystal display panel, as shown in FIG. 12 , the display panel specifically includes: an array substrate 112 and an opposite substrate 113 that are arranged opposite to each other, and a substrate 114 located on the array substrate 112 and a liquid crystal layer 114 between the opposite substrate 113.
  • the array substrate 112 includes: a thin film transistor TFT, a pixel electrode 9; the opposite substrate 113 includes a color filter 8.
  • the array substrate 112 also includes: a fourth base substrate 101, and the thin film transistor TFT is located between the fourth base substrate 101 and the pixel electrode 9; the opposite substrate 113 also includes: a fifth base substrate 1132, and a black matrix 1131 located on the side of the fifth base substrate 1132 facing the liquid crystal layer 114, the black matrix 1131 includes a second opening, and the second opening corresponds to the opening area of the sub-pixel, and the color filter 8 includes a portion located in the second opening.
  • FIG. 12 takes the common electrode 115 located on the array substrate 112 as an example for illustration. Of course, the common electrode 11 can also be located on the opposite substrate 113.
  • the thin film transistor TFT is a top gate structure, that is, the gate G is located on the side of the active layer 1021 away from the fourth base substrate 101; the array substrate 112 also includes: a buffer layer 103 located between the fourth base substrate 101 and the active layer 1021, a gate insulating layer 104 located between the active layer 1021 and the gate G, an interlayer insulating layer 105 located between the gate G and the source S and the drain D, and a third planarization layer 106 located between the source S and the drain D and the pixel electrode 9, a second protective layer 1122 located between the pixel electrode 9 and the common electrode 11, and a third protective layer 1123 located between the common electrode 11 and the liquid crystal layer 114.
  • the display device when the display panel is a liquid crystal display panel, the display device further includes: a backlight module located on a side of the display panel away from the imaging structure.
  • the backlight module includes a backlight source, which is, for example, an electroluminescent device.
  • the display device needs to store preset light field mapping rules that match the various parameters of the display device, so that the display panel display image corresponding to the 3D image to be displayed can be obtained.
  • a light field database is established based on the coordinate information of the off-axis reflection structure, the light control structure, and the coordinate information of the display panel pixels to obtain light field information matching the display device, wherein one pixel represents a ray of light, and one ray of light corresponds to one viewpoint.
  • the depth of field plane to be displayed and the light field of the space are intersected in combination with the light field information database, and the pixels on the display panel are determined according to the mapping relationship to obtain the light field rendering image of the depth of field plane, and the rendered light field images of each depth of field plane are superimposed together, and the corresponding display information is given to drive the pixels to emit light.
  • the light control structure and the off-axis semi-transparent and semi-reflective structure can be used to restore the light field that is consistent with the real 3D image.
  • the human eye can focus and watch the 3D scene.
  • each pixel includes multiple sub-pixel units, different sub-pixel units have different light emission colors, and each sub-pixel unit includes multiple sub-pixels with the same light emission color;
  • the display panel has a first light emitting plane, and different seed pixel units have different light emitting colors on the first light emitting plane;
  • the first light exiting plane coincides with the focal planes of the plurality of micro lenses.
  • the first light emitting plane 7 is the light emitting surface of the color filter 8.
  • the first light emitting plane 7 is the light emitting surface of the light emitting layer 502.
  • the first curved surface of the off-axis semi-transparent and semi-reflective structure can be simulated and optimized to obtain the required surface shape of the first curved surface, and the required light output angle of the display panel is calculated based on the surface shape of the first curved surface of the off-axis semi-transparent and semi-reflective structure.
  • the surface shape of the first curved surface is the same as the surface shape of the second curved surface.
  • the surface shape of the first curved surface and the surface shape of the second curved surface are both xy polynomial free-form surface shapes. That is, the first curved surface and the second curved surface satisfy the following formula:
  • C is the curvature
  • K is the conic coefficient
  • A is the coefficient of each polynomial.
  • first curved surface and the second curved surface of the off-axis semi-transmissive and semi-reflective structure can be simulated and optimized to obtain the xy polynomial free-form surface shape.
  • the light field display device includes: two display panels corresponding to the left eye and the right eye, two off-axis transflective structures corresponding to the left eye and the right eye, and two light control structures corresponding to the left eye and the right eye.
  • the light field display device may include one display structure corresponding to the left eye and the right eye, or may include two display structures corresponding to the left eye and the right eye.
  • a set of display panels, light control structures, and off-axis semi-transmissive and semi-reflective structures correspond to the left
  • the display panel and the light control structure can be arranged above the human eye and the off-axis semi-transparent and semi-reflective structure.
  • the center of the plane where the display panel is located the center of the plane where the light control structure is located, the optical axis of the off-axis semi-transparent and semi-reflective structure, and the center of the monocular pupil corresponding to each structure of the group are located in the same plane, and the plane is perpendicular to the binocular arrangement direction.
  • the two display panels display the same picture.
  • the two display panels have the same parameters such as composition and size
  • the two light control structures have the same parameters such as composition and size
  • the two off-axis transflective structures have the same parameters such as composition and size.
  • the positional relationship between the display panel, light control structure, and off-axis transflective structure corresponding to the left eye is the same as the positional relationship between the display panel, light control structure, and off-axis transflective structure corresponding to the right eye.
  • the embodiment of the present disclosure also provides a driving method of a light field display device, as shown in FIG13 , comprising:
  • S101 in a first display mode, controlling the transmittance of the display structure to be 0, so that light emitted from the display panel reaches the off-axis semi-transmissive and semi-reflective structure and converges to human eyes;
  • the display structure includes a brightness collection structure, and in the second display mode, controlling the transmittance of the display structure to be greater than 0 specifically includes:
  • the transmittance of the display structure is adjusted according to the brightness of the ambient light collected by the brightness collection structure.
  • the display structure also includes a liquid crystal box, which includes a first electrode layer and a second electrode layer;
  • the light field display device also includes a driving unit;
  • the driving unit does not apply a voltage to the first electrode layer and the second electrode layer, and the transmittance of the display structure is maximum.
  • the driving unit does not apply a voltage to the first electrode layer and the second electrode layer to control the transmittance of the display structure to 0, or controls the transmittance of the display structure to be greater than 0 and less than the maximum transmittance.
  • the brightness collection structure is electrically connected to the driving unit, and the driving unit is also electrically connected to the display panel; the driving method further includes:
  • the transmittance of the display structure is adjusted according to the brightness of the ambient light collected by the brightness collection structure, specifically including:
  • the brightness information collected by the brightness collection structure is compared with the display brightness of the display panel to determine the voltage applied to the first electrode layer and the second electrode layer.
  • a wearable device provided by an embodiment of the present disclosure includes the light field display device provided by an embodiment of the present disclosure.
  • the off-axis semi-transmissive and semi-reflective structure is used as an eyepiece of a wearable device, for example.
  • the wearable device provided in the embodiment of the present disclosure is: any wearable product or component with display function, such as a wearable helmet and wearable glasses.
  • Other essential components of the wearable device should be understood by ordinary technicians in the field, and will not be repeated here, nor should they be used as limitations on the present disclosure.
  • the implementation of the wearable device can refer to the embodiment of the light field display device mentioned above, and the repeated parts will not be repeated.
  • the light field display device and its driving method, and the wearable device provided by the embodiments of the present disclosure include a display structure.
  • the transmittance of the display structure is adjusted to 0, the ambient light cannot reach the off-axis semi-transparent and semi-reflective structure through the display structure, and the light emitted by the display panel reaches the off-axis semi-transparent and semi-reflective structure and converges to the human eye, thereby realizing virtual reality (VR) light field display.
  • VR virtual reality
  • the transmittance of the display structure When the transmittance of the display structure is adjusted to be greater than 0, the ambient light reaches the off-axis semi-transparent and semi-reflective structure through the display structure, that is, the user can view the real environment through the light field display device, and the light emitted by the display panel reaches the off-axis semi-transparent and semi-reflective structure and converges to the human eye, thereby realizing augmented reality (AR) light field display.
  • the light field display device provided by the embodiments of the present disclosure can realize the switching between VR light field display and AR light field display by adjusting the transmittance of the display structure, thereby increasing the application scenarios of the light field display device and improving the user experience.
  • the display structure is also used to display the picture, that is, the user can also watch through the display structure, further increasing the application scenarios.

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Abstract

Sont divulgués dans la présente divulgation un appareil d'affichage de champ lumineux et son procédé d'attaque, et un dispositif habitronique, qui sont utilisés pour commuter entre un affichage de champ lumineux de réalité virtuelle et un affichage de champ lumineux de réalité augmentée. L'appareil d'affichage de champ lumineux selon les modes de réalisation de la présente divulgation comprend : un écran d'affichage ; une structure transflective hors axe, qui est située sur un côté d'émission de lumière de l'écran d'affichage ; et une structure d'affichage, qui est située sur le côté de la structure transflective hors axe qui est opposé à l'écran d'affichage, la structure d'affichage étant utilisée pour ajuster la transmittance de la structure d'affichage pour qu'elle soit supérieure à 0, de telle sorte que la lumière ambiante est transmise à travers la structure d'affichage pour atteindre la structure transflective hors axe, ou pour ajuster la transmittance de la structure d'affichage à 0, de telle sorte que la lumière ambiante ne peut pas être transmise à travers la structure d'affichage ; et/ou la structure d'affichage est utilisée pour afficher une image ; et la structure transflective hors axe est utilisée pour faire converger, vers les yeux humains, la lumière qui est émise par l'écran d'affichage et/ou la lumière qui est transmise à travers la structure d'affichage.
PCT/CN2024/097749 2023-06-06 2024-06-06 Appareil d'affichage de champ lumineux et son procédé d'attaque, et dispositif habitronique Ceased WO2024251198A1 (fr)

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CN202310665497.8A CN119126378A (zh) 2023-06-06 2023-06-06 一种光场显示装置及其驱动方法、可穿戴设备
CN202310665497.8 2023-06-06

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105899997A (zh) * 2014-03-17 2016-08-24 松下知识产权经营株式会社 显示装置
CN106226909A (zh) * 2016-09-05 2016-12-14 浙江舜通智能科技有限公司 显示装置及头戴式显示系统
CN205844639U (zh) * 2016-07-22 2016-12-28 苏州汉朗光电有限公司 一种可实现vr与ar切换及混合现实的显示装置
CN106842569A (zh) * 2016-12-30 2017-06-13 北京七鑫易维信息技术有限公司 一种头戴式显示装置及其显示方法
US20180180887A1 (en) * 2016-12-22 2018-06-28 Lg Display Co., Ltd. Augmented reality device
US20210026144A1 (en) * 2018-04-10 2021-01-28 Japan Display Inc. Head mounted display

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105899997A (zh) * 2014-03-17 2016-08-24 松下知识产权经营株式会社 显示装置
CN205844639U (zh) * 2016-07-22 2016-12-28 苏州汉朗光电有限公司 一种可实现vr与ar切换及混合现实的显示装置
CN106226909A (zh) * 2016-09-05 2016-12-14 浙江舜通智能科技有限公司 显示装置及头戴式显示系统
US20180180887A1 (en) * 2016-12-22 2018-06-28 Lg Display Co., Ltd. Augmented reality device
CN106842569A (zh) * 2016-12-30 2017-06-13 北京七鑫易维信息技术有限公司 一种头戴式显示装置及其显示方法
US20210026144A1 (en) * 2018-04-10 2021-01-28 Japan Display Inc. Head mounted display

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