WO2022172644A1 - Dispositif d'affichage d'image - Google Patents

Dispositif d'affichage d'image Download PDF

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Publication number
WO2022172644A1
WO2022172644A1 PCT/JP2022/000021 JP2022000021W WO2022172644A1 WO 2022172644 A1 WO2022172644 A1 WO 2022172644A1 JP 2022000021 W JP2022000021 W JP 2022000021W WO 2022172644 A1 WO2022172644 A1 WO 2022172644A1
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WO
WIPO (PCT)
Prior art keywords
light control
light
image display
display panel
display device
Prior art date
Application number
PCT/JP2022/000021
Other languages
English (en)
Japanese (ja)
Inventor
武一 新屋
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2022172644A1 publication Critical patent/WO2022172644A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • 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 
    • G02F1/15—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 an electrochromic effect
    • 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 
    • G02F1/169—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 orientable non-spherical particles having a common optical characteristic, e.g. suspended particles of reflective metal flakes
    • 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
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/06—Electrode terminals
    • 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
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • the present disclosure relates to an image display device.
  • Patent Document 1 discloses an image display and imaging device (image sensor) that includes a liquid crystal panel and an imaging device (camera) arranged on the back side of the liquid crystal panel, and that allows users to converse while looking at each other's lines of sight. display device) is disclosed.
  • the camera may stand out when viewed from the display surface.
  • the present disclosure provides an image display device in which the visibility of the camera is suppressed.
  • An image display device includes a translucent self-luminous display panel, a camera arranged on the back of the display panel, and arranged between the display panel and the camera, a light control panel having a light control unit capable of switching from one of a transmissive state in which the light transmitted through the display panel is transmitted to the camera and an opaque state in which the light is not transmitted from the transmissive state to the other; a light shielding portion disposed between the display panel and the camera and covering, in a plan view, an area on the rear surface of the display panel other than an area overlapping with the light adjustment portion; a control section for switching between an image display mode in which the light section is in the non-transmissive state and a photographing mode in which the image is displayed on the display panel and the light control section is in the transmissive state.
  • FIG. 1 is a cross-sectional view showing a normal mode state of the image display device according to the embodiment.
  • FIG. 2 is a cross-sectional view showing the state of the image display device according to the embodiment in the Web conference mode.
  • FIG. 3 is a block diagram showing the functional configuration of the image display device according to the embodiment.
  • FIG. 4 is an exploded plan view showing each configuration of the light control panel according to the embodiment.
  • FIG. 5 is a plan view showing the light control panel according to the embodiment.
  • FIG. 6 is a cross-sectional view showing another configuration of the image display device according to the embodiment.
  • FIG. 7 is a flow chart showing the operation of the image display device according to the embodiment.
  • FIG. 8 is a diagram showing the state of each mode of the light control panel according to the embodiment.
  • FIG. 9 is a diagram showing a display state in each mode of the image display device according to the embodiment.
  • the image display device disclosed in Patent Document 1 includes a liquid crystal panel, which has a polarizing plate and the like, and has a lower transmittance than a transparent OLED (Organic Light Emitting Diode) panel.
  • a transparent OLED Organic Light Emitting Diode
  • the lens of the camera arranged behind the liquid crystal panel can be large in order to obtain the amount of incident light and the shooting range. As a result, when the image display device is viewed from the display surface side (front side), the camera may stand out.
  • the inventors of the present application conducted extensive research on an image display device that can suppress the visibility of the camera by reducing the size of the camera lens, and created the image display device described below.
  • each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code
  • the X-axis, Y-axis and Z-axis indicate three axes of a three-dimensional orthogonal coordinate system.
  • the Y-axis is the lamination direction of each component of the image display device.
  • the Y-axis is an axis parallel to an axis perpendicular to the display surface of the image display device (for example, the optical axis of the image display device).
  • a plane formed by the X axis and the Z axis is parallel to the display surface of the image display device.
  • plane view means viewing from a direction parallel to the Y-axis, for example.
  • FIG. 1 An image display device according to the present embodiment will be described below with reference to FIGS. 1 to 9.
  • FIG. 1 An image display device according to the present embodiment will be described below with reference to FIGS. 1 to 9.
  • FIG. 1 is a cross-sectional view showing a normal mode state of an image display device 1 according to the present embodiment.
  • FIG. 2 is a cross-sectional view showing the state of the image display device 1 according to the present embodiment in the Web conference mode.
  • FIG. 3 is a block diagram showing the functional configuration of the image display device 1 according to this embodiment.
  • the area where the light control panel 30 is in the opaque state is indicated by dot hatching.
  • the image display device 1 includes a protection plate 10, a display panel 20, a light control panel 30, a camera 70, and a control section 80.
  • the image display device 1 is configured by laminating a protection plate 10, a display panel 20, and a light control panel 30 in this order.
  • Each structure is attached by, for example, an adhesive member (not shown) having high transparency such as OCA (Optical Clear Adhesive), but the present invention is not limited to this.
  • OCA Optical Clear Adhesive
  • the protection plate 10 side (Y-axis minus side) is the front side of the image display device 1, and the user views the image displayed by the image display device 1 from the protection plate 10 side. Further, the light control panel 30 side (Y-axis plus side) is the rear side of the image display device 1 .
  • the protective plate 10 is a cover member that is arranged on the front side (Y-axis negative side) of the display panel 20 and covers the display panel 20 .
  • the protection plate 10 is made of a translucent material, such as glass (strengthened glass) or plastic.
  • the protection plate 10 has, for example, a flat plate shape, but a part of the protection plate 10 may be curved.
  • the protective plate 10 is not an essential component.
  • the display panel 20 is a self-luminous display panel having translucency.
  • the display panel 20 is, for example, a transparent OLED panel. That is, the display panel 20 does not have a light source such as a backlight and a light guide member unlike a liquid crystal panel.
  • the display panel 20 is thinner than the liquid crystal panel because it does not have a light source and a light guide member.
  • the thickness (length in the Y-axis direction) of the display panel 20 is, for example, approximately 0.1 mm to 0.2 mm.
  • the display panel 20 is not limited to a transparent OLED panel as long as it is a display panel having translucency. For example, it may be another self-luminous display panel.
  • the display panel 20 is an example of a display panel.
  • the light control panel 30 is arranged between the display panel 20 and the camera 70, and has a transmissive state in which the light (external light) transmitted through the display panel 20 is transmitted to the camera 70, and an opaque state in which the light is not transmitted. It is a sheet-like member (light control sheet) having a light control portion 30a capable of switching from one state to the other.
  • the light control panel 30 has a light control portion 30a and an opaque portion 30b around the light control portion 30a.
  • the opaque portion 30b is disposed between the display panel 20 and the camera 70, and covers a region on the rear surface of the display panel 20 other than the region overlapping the dimming portion 30a in a plan view (for example, a plan view of the display panel 20). It is the part that remains opaque in both the normal mode and the web conference mode.
  • the light (outside light) here is light for photographing the user in front of the image display device 1 .
  • the opaque portion 30b is an example of a light shielding portion.
  • the area overlapping the light control section 30a on the back surface of the display panel 20 is an example of the light control area (light control area R1 shown in FIG. 5), and the area other than the light control area is an opaque area ( An example of the impermeable region R2) shown.
  • the light control panel 30 is arranged facing the back surface of the display panel 20 (the surface on the Y-axis plus side).
  • the light control panel 30 is configured to cover the entire rear surface of the display panel 20 .
  • the light control panel 30 has a pair of electrode layers (for example, the first electrode portion 41 and the second electrode portion 61), and by controlling the AC voltage (control voltage) applied to the pair of electrode layers , to switch between transparent and opaque states.
  • the light control panel 30 is in a transparent state when an AC voltage is applied or there is a potential difference between the electrodes, and is in a non-transmissive state when no AC voltage is supplied or there is no potential difference between the electrodes.
  • the thickness (length in the Y-axis direction) of the light control panel 30 is, for example, about 0.3 mm, but is not limited to this.
  • the first electrode portion 41 and the second electrode portion 61 are formed only on the front portion of the lens of the camera 70 .
  • the light control panel 30 has a configuration in which only the front portion of the lens of the camera 70 can be switched between the transmissive state and the non-transmissive state.
  • the light control portion 30a includes the first electrode portion 41, the second electrode portion 61, and the light control layer 50. As shown in FIG.
  • the light control panel 30 switches the light control between the first electrode section 41 and the second electrode section 61.
  • a portion of layer 50 (the front portion of the lens) becomes opaque.
  • FIG. 1 when there is no potential difference between the first electrode portion 41 and the second electrode portion 61 of the light control panel 30 , there is a voltage between the first electrode portion 41 and the second electrode portion 61 of the light control panel 30 . becomes opaque, that is, the light adjusting portion 30a becomes opaque. At this time, imaging by the camera 70 cannot be performed.
  • the normal mode is a state in which the front surface of the light control panel 30 is in an opaque state and the camera 70 is not imaging.
  • the normal mode is a mode in which the user views images without bi-directional transmission of image signals.
  • the normal mode is an example of an image display mode.
  • the light control layer 50 between the first electrode portion 41 and the second electrode portion 61 becomes transparent.
  • the light control layer 50 between the first electrode portion 41 and the second electrode portion 61 of the light control panel 30 when there is a potential difference between the first electrode portion 41 and the second electrode portion 61 of the light control panel 30 , there is a potential difference between the first electrode portion 41 and the second electrode portion 61 of the light control panel 30 . becomes a transmission state, that is, the light control section 30a becomes a transmission state. At this time, the camera 70 is ready for imaging.
  • a web conference mode is an example of a photography mode.
  • the shooting mode is a mode in which image signals are transmitted bi-directionally and users can talk to each other. Since the camera 70 is arranged at a position overlapping the display panel 20 in a plan view, users can have a conversation while keeping their eyes on each other in the photographing mode.
  • the photographing mode is not limited to the case of a web conference, and may be used during a videophone call, for example, as long as it is used for communication performed by transmitting image signals bidirectionally.
  • the shooting mode may be used, for example, when the user (the photographer himself) is photographed (so-called self-portrait) using a smartphone or the like.
  • the AC voltage applied to the light control panel 30 is supplied from a commercial power source, for example.
  • the maximum AC voltage is 220V, but is not limited to this.
  • the transmittance of the light control panel 30 is variable, for example, within a range of 0% or more and 60% or less according to the AC voltage, but is not limited to this.
  • the area of the light control panel 30 other than the area in front of the lens of the camera 70 is not formed with, for example, an electrode layer, and is maintained in an opaque state.
  • the dimming area may be an area in front of the lens of the camera 70
  • the non-transmissive area may be an area other than the area in front of the lens of the camera 70 .
  • the area in front of the lens of the camera 70 is, for example, an area including an area overlapping the lens in the light control panel 30 in plan view, and may be an area overlapping the lens in the light control panel 30, for example.
  • the light control panel 30 is directly bonded to the display panel 20 via an adhesive member. In other words, no space (air layer) is formed between the light control panel 30 and the display panel 20 .
  • FIG. 4 is an exploded plan view showing each configuration of the light control panel 30 according to the present embodiment.
  • FIG. 4A is a plan view showing the first substrate 40.
  • FIG. (b) of FIG. 4 is a plan view showing the light modulating layer 50 .
  • (c) of FIG. 4 is a plan view showing the second substrate 60 .
  • the light control panel 30 has a first substrate 40, a light control layer 50 and a second substrate 60 laminated in this order from the display panel 20 side. Configured.
  • the first substrate 40 is a translucent substrate arranged to face the rear surface of the display panel 20 .
  • the first substrate 40 is, for example, a PET (polyethylene terephthalate) film, but may be a glass substrate, an acrylic substrate, or the like.
  • An electrode layer including a first electrode portion 41 and a first wiring portion 42 is formed on the surface of the first substrate 40 on the positive side of the Y axis.
  • the first electrode portion 41 and the first wiring portion 42 are made of a transparent metal material such as a metal oxide such as ITO (Indium Tin Oxide).
  • the first electrode portion 41 is an electrode for switching the light modulating layer 50 from one of the transmissive state and the non-transmissive state to the other.
  • the first electrode portion 41 is formed in front of the lens of the camera 70 .
  • the first electrode portion 41 is formed, for example, in a region facing the lens of the camera 70 .
  • the planar shape of the first electrode portion 41 is, for example, circular, but is not limited thereto.
  • the first wiring portion 42 is wiring for applying an AC voltage to the first electrode portion 41 and is connected to the first electrode portion 41 .
  • the first wiring portion 42 has, for example, a portion extending from the first electrode portion 41 to the negative side of the X axis.
  • the first wiring portion 42 is, for example, L-shaped, but is not limited thereto.
  • the light control layer 50 is configured by dispersing a light control suspension in resin.
  • the light modulating suspension contains light modulating particles (eg, liquid crystal molecules) that are responsive to an electric field.
  • the light control panel 30 adjusts the light transmittance by using the polarization orientation of the light control particles.
  • the light control layer 50 is arranged between the first electrode portion 41 and the second electrode portion 61 in the light control region R1.
  • the light modulating layer 50 is formed so as to cover the light modulating region R1 and the non-transmissive region R2.
  • the light control layer 50 is formed facing the display panel 20, for example.
  • the dimming layer 50 is formed, for example, so as to cover the display panel 20 .
  • the second substrate 60 is a translucent substrate arranged to face the first substrate 40 .
  • the second substrate 60 is, for example, a PET film, but may be a glass substrate, an acrylic substrate, or the like.
  • An electrode layer including a second electrode portion 61 and a second wiring portion 62 is formed on the surface of the second substrate 60 on the Y-axis negative side.
  • the second electrode portion 61 and the second wiring portion 62 are made of, for example, a transparent metal material such as a metal oxide such as ITO.
  • the second electrode portion 61 is an electrode for switching the light modulating layer 50 from one of the transmissive state and the non-transmissive state to the other, and is formed facing the first electrode portion 41 .
  • the second electrode portion 61 is formed in front of the lens of the camera 70 .
  • the second electrode portion 61 is formed, for example, in a region facing the lens of the camera 70 .
  • the planar view shape of the second electrode portion 61 is, for example, circular, but is not limited to this.
  • the second electrode portion 61 has, for example, the same size as the first electrode portion 41 in plan view.
  • the second electrode portion 61 overlaps the first electrode portion 41 in plan view, for example.
  • the second wiring portion 62 is wiring for applying an AC voltage to the second electrode portion 61 and is connected to the second electrode portion 61 .
  • the second wiring portion 62 has, for example, a portion extending from the second electrode portion 61 to the X-axis plus side (the side opposite to the first wiring portion 42).
  • the second wiring portion 62 is, for example, L-shaped, but is not limited thereto.
  • FIG. 5 is a plan view showing the light control panel 30 according to this embodiment.
  • the light control panel 30 shown in FIG. 5 shows a state in which the first substrate 40, the light control layer 50 and the second substrate 60 shown in FIGS. 4A to 4C are laminated in this order.
  • the light control panel 30 can be switched from one of a transmissive state in which the light transmitted through the display panel 20 is transmitted to the camera 70 and an opaque state in which the light is not transmitted from the transmissive state to the other. It has a dimming portion 30a and an opaque portion 30b.
  • the light control portion 30a is a portion of the light control panel 30 where the first electrode portion 41 and the second electrode portion 61 overlap in plan view.
  • the light control unit 30a and the camera 70 may be provided near the center of the display panel 20 in plan view.
  • the light adjusting section 30a and the camera 70 (for example, the lens of the camera 70) may be provided in the center.
  • the light control panel 30 has a light control region R1 in which a transmissive state and an opaque state are switched and an opaque region R2 around the light control region R1 in plan view.
  • the opaque region R2 is a region that maintains an opaque state regardless of the mode of the image display device 1.
  • FIG. The non-transmissive region R2 portion of the light control panel 30 constitutes the non-transmissive portion 30b.
  • the dimming region R1 is a region where the first electrode portion 41 and the second electrode portion 61 overlap in plan view.
  • the light control region R1 is, for example, circular in plan view, and the diameter D of the light control region R1 is, for example, about 1 mm.
  • the diameter D of the dimming region R1 is 1 mm or less. Note that the shape and size of the dimming region R1 are not limited to this.
  • the non-transmissive region R2 is a region in which the electrodes do not overlap in plan view, and is a region that is in a non-transmissive state regardless of the mode of the image display device 1 .
  • the first wiring portion 42 and the second wiring portion 62 are formed in the opaque region R2.
  • the first wiring portion 42 and the second wiring portion 62 are formed in regions that do not overlap each other in plan view.
  • the first wiring portion 42 and the second wiring portion 62 may be formed so as to be line-symmetrical about an axis that passes through the center of the dimming region R1 in plan view and is parallel to the Z-axis.
  • the light control panel 30 has the first electrode portion 41 and the second electrode portion 61 arranged to face each other in the light control portion 30a, and the electrodes between the first electrode portion 41 and the second electrode portion 61 and a dimming layer 50 provided so as to cover the display panel 20 . Further, the light control panel 30 has a first wiring portion 42 for applying a voltage to the first electrode portion 41 and a second wiring portion 42 for applying a voltage to the second electrode portion 61 in the opaque portion 30b other than the light control portion 30a. and a second wiring portion 62 of . The first wiring portion 42 and the second wiring portion 62 are formed so as not to overlap each other in plan view of the image display device 1 .
  • electrodes other than the first wiring portion 42 and the second wiring portion 62 are not formed in the non-transmissive portion 30b.
  • plan view shape of the light control panel 30 is rectangular, it is not limited to this.
  • An electrode facing the impermeable region R2 may be formed.
  • a third electrode portion formed insulated from the first electrode portion 41 and the first wiring portion 42 is formed in a region of the first substrate 40 corresponding to the impermeable region R2, and corresponds to the impermeable region R2.
  • the light control panel 30 is a panel that switches between a transmissive state and an opaque state using an SPD (Suspended Particle Device) system that utilizes suspended particles whose aligned state changes depending on whether or not an electric field is applied.
  • SPD Serial Particle Device
  • EC Electro Chromic
  • PDLC Polymer Dispersed liquid crystal
  • gas chromic method etc. good.
  • the camera 70 is an imaging device that captures an image of the user in front of the image display device 1.
  • FIG. The camera 70 is arranged behind the display panel 20 and the light control panel 30 (surface on the Y-axis plus side).
  • the display panel 20 is a self-luminous display panel and has a higher transmittance than the liquid crystal panel.
  • the lens of the camera 70 can be made small because there are few factors that impede photographing by the camera 70. - ⁇ This makes it possible to prevent the camera 70 from being visually recognized by the user when the image display device 1 is viewed in plan view.
  • the camera 70 can be arranged at a position close to the display panel 20 because the display panel 20 does not have a backlight.
  • the camera 70 is arranged, for example, on the back side from the display panel 20 by the thickness of the light control panel 30 and the adhesive member. Since the camera 70 is arranged in the immediate vicinity of the display panel 20 in this manner, the image captured by the camera 70 is affected by the wiring pattern (the pattern forming the pixels) formed on the display panel 20. less difficult and can result in higher quality images.
  • the lens of the camera 70 has a diameter of about 1 mm in plan view, but is not limited to this.
  • the control unit 80 is a control device that controls each component of the image display device 1 .
  • the control unit 80 controls switching between modes (normal mode and Web conference mode) in the image display device 1 .
  • the control unit 80 has two modes: a normal mode (an example of an image display mode) in which an image is displayed on the display panel 20 and the light control unit 30a is in an opaque state, and an image display mode in which an image is displayed on the display panel 20 and the light control unit 30a is transparent. Switching to and from a Web conference mode (an example of a shooting mode).
  • control unit 80 puts the light control panel 30 in a non-transmissive state and does not allow the camera 70 to shoot, and in the Web conference mode, puts the light control panel 30 in a transparent state and The light control panel 30 and the camera 70 are controlled so that the camera 70 is allowed to photograph.
  • the control unit 80 controls so that no potential difference occurs between the first electrode unit 41 and the second electrode unit 61 in the normal mode.
  • the control section 80 may apply AC voltages in phase to the first electrode section 41 and the second electrode section 61 respectively, or may may stop applying the AC voltage to each of the .
  • the control unit 80 performs control so that a potential difference is generated between the first electrode unit 41 and the second electrode unit 61 in the imaging mode.
  • the control unit 80 may apply alternating voltages of opposite phases to each of the first electrode unit 41 and the second electrode unit 61 in the imaging mode.
  • the image display device 1 as described above is installed in a device that displays images and is capable of communicating with a communication network such as the Internet.
  • the image display device 1 is installed in, for example, a television device, a personal computer, a smart phone, a tablet, or the like, but is not limited to this.
  • the image display device 1 may further include a communication device (communication module) for connecting to a communication network such as the Internet.
  • the configuration of the image display device 1 is not limited to the above. Another configuration of the image display device 1 will be described with reference to FIG. FIG. 6 is a sectional view showing another configuration of the image display device 1a according to this embodiment.
  • the image display device 1a includes a light shielding member 140 in addition to the image display device 1 described above, and a light control panel 130 instead of the light control panel 30. As shown in FIG. 6, the image display device 1a includes a light shielding member 140 in addition to the image display device 1 described above, and a light control panel 130 instead of the light control panel 30. As shown in FIG. 6, the image display device 1a includes a light shielding member 140 in addition to the image display device 1 described above, and a light control panel 130 instead of the light control panel 30. As shown in FIG.
  • the light shielding member 140 is provided between the display panel 20 and the camera 70 so as to cover the rear surface of the display panel 20, and blocks external light entering the display panel 20 from the rear surface of the image display device 1a.
  • the light shielding member 140 is a sheet-like member arranged to face the back surface of the display panel 20 (the surface on the Y-axis plus side).
  • the light shielding member 140 forms an opaque portion 140a.
  • the light blocking member 140 is an example of a light blocking section.
  • the external light here is light other than the light emitted by the display panel 20, and is light that causes the contrast of the image displayed by the display panel 20 to decrease.
  • the outside light is, for example, illumination light, sunlight, or the like, but is not limited thereto.
  • the light shielding member 140 has an opening A formed at a position corresponding to the photographing hole of the camera 70 . It can also be said that the light shielding member 140 has an opening A formed in front of the camera 70 (for example, the lens of the camera 70).
  • the opening A is a through hole for arranging the light control panel 130, and is formed, for example, in the center of the light shielding member 140 in plan view. That is, the light control panel 130 is provided inside the opening A. As shown in FIG. For example, the light shielding member 140 surrounds the light control panel 130 at the opening A without a gap.
  • the opening A is provided near the center of the display panel 20 in plan view as an example.
  • the opening A may be provided in the center of the display panel 20 in plan view.
  • the center includes, for example, the center of gravity of the display panel 20 in plan view.
  • the planar view shape of the opening A may be any shape that corresponds to the shape of the lens, for example, a circular shape.
  • the center of the aperture A in plan view and the optical axis of the lens in plan view match.
  • the size of the aperture A is preferably small from the viewpoint of suppressing the camera 70 (eg, lens) from being visually recognized.
  • the diameter of the aperture A may be 2 mm or less, more preferably 1 mm or less, as long as the camera 70 can take an image.
  • the light blocking member 140 is not particularly limited as long as it can block external light.
  • the light blocking member 140 may be a member such as a black plate or sheet.
  • the transmittance of the light shielding member 140 is a value corresponding to the transmittance of the light control panel 130 in the non-transmissive state. good.
  • the light control panel 130 is provided in the opening A of the light shielding member 140 and has a configuration capable of switching between a transmissive state and an opaque state.
  • the light control panel 130 includes a first electrode portion 41 , a light control layer 50 and a second electrode portion 61 .
  • the light control panel 130 includes, for example, a first electrode portion 41 and a second electrode portion 61, and a first electrode portion 41 and a second electrode portion 61 arranged to face each other in the light control portion 130a (eg, light control region) and a light modulating layer 50 provided between the portions 61 .
  • FIG. 7 is a flow chart showing the operation of the image display device 1 according to this embodiment.
  • FIG. 8 is a diagram showing the state of each mode of light control panel 30 according to the present embodiment.
  • FIG. 9 is a diagram showing the display state of each mode of the image display device 1 according to this embodiment.
  • FIG. 7 illustrates a case of transition from normal mode to Web conference mode. The same applies to the operation of the image display device 1a.
  • the control unit 80 starts operating in normal mode (S10).
  • the control unit 80 makes the light control panel 30 non-transmissive and causes the display panel 20 to display an image.
  • the control unit 80 maintains the light control layer 50 sandwiched between the first electrode unit 41 and the second electrode unit 61 in an opaque state.
  • the control section 80 may control each of the dimming section 30a and the non-transmissive section 30b to the non-transmissive state.
  • the image display device 1 can display a clear image with high contrast.
  • the normal mode may be set as the initial mode when the power of the image display device 1 is turned on.
  • each of the dimming region R1 and the non-transmissive region R2 is in the non-transmissive state.
  • the control section 80 may apply AC voltages in phase to each of the first electrode section 41 and the second electrode section 61 .
  • the image display device 1 displays a normal image (for example, an image based on broadcast waves).
  • a normal image for example, an image based on broadcast waves.
  • the control unit 80 determines that the normal mode is set, and operates in the normal mode. good.
  • the control unit 80 determines whether or not to transition to the web conference mode based on the information indicating the transition to the web conference mode (S20).
  • the information indicating the transition to the web conference mode may be, for example, an instruction from the user indicating the transition to the web conference mode, or may be information indicating that an application for conducting a web conference has started. good.
  • the control unit 80 may determine to transition to the Web conference mode when an instruction indicating transition to the Web conference mode is received from the user or when an application for conducting a Web conference is started.
  • control unit 80 transitions to the web conference mode (Yes in S20), it proceeds to step S30, and if it does not transition to the web conference mode (No in S20), it proceeds to step S60.
  • step S20 the control unit 80 puts the light control panel 30 in the transmissive state and starts operating in the web conference mode (S30).
  • the control unit 80 applies a predetermined potential to the first electrode unit 41 and applies a potential opposite in phase to the predetermined potential to the second electrode unit 61 , thereby connecting the first electrode unit 41 and the second electrode unit 61 .
  • the light modulating layer 50 sandwiched between the two electrode portions 61 is switched to a transmissive state.
  • the control unit 80 may control the light control unit 30a to be in the transparent state and the non-transmissive unit 30b to be in the non-transmissive state.
  • control unit 80 causes the camera 70 to take an image, and causes the image data of the image to be transmitted to an external device.
  • the user can hold a web conference while directing his or her line of sight to the other party, the material, or the like displayed on the image display device 1 .
  • the control unit 80 may apply alternating voltages of opposite phases to each of the first electrode unit 41 and the second electrode unit 61 .
  • the image of the other party of the Web conference is displayed on the image display device 1, and an image is captured by the camera 70 via the light control unit 30a.
  • the diameter D is about 1 mm as described above, and the camera 70 (for example, the lens) is difficult for the user to visually recognize.
  • the control unit 80 determines whether or not to end the web conference mode based on whether or not information indicating the end of the web conference mode has been acquired (S40). It can also be said that the control unit 80 determines whether or not to transition to the normal mode.
  • Information indicating termination of the web conference mode may be, for example, an instruction from the user to terminate the web conference mode, or may be information indicating that the application for conducting the web conference has been closed.
  • the control unit 80 may determine to end the Web conference mode when receiving an instruction to end the Web conference mode from the user or when the application for conducting the Web conference is closed.
  • control unit 80 ends the web conference mode (Yes in S40), it proceeds to step S50, and if it does not end the web conference mode (No in S40), it proceeds to step S70.
  • step S40 the control unit 80 puts the light control panel 30 in a non-transmissive state and starts operating in the normal mode (S50).
  • the control unit 80 transitions from the web conference mode to the normal mode.
  • control unit 80 determines whether or not to end the operation of the image display device 1 (S60). For example, the control unit 80 may make the determination in step S60 based on whether or not an instruction to end the operation has been received from the user.
  • step S60 If the operation of the image display device 1 is to be ended (Yes in S60), the control unit 80 ends the operation, and if the operation of the image display device 1 is not to be ended (No in S60), returns to step S20 and continues the processing. . If Yes in step S60, the control unit 80 stops the operations of the display panel 20, the light control panel 30, and the camera 70. FIG.
  • control unit 80 determines whether or not to end the operation of the image display device 1 (S70). For example, the control unit 80 may make the determination in step S70 based on whether or not an instruction to end the operation has been received from the user.
  • step S70 If the operation of the image display device 1 is to be ended (Yes in S70), the control unit 80 ends the operation, and if the operation of the image display device 1 is not to be ended (No in S70), returns to step S40 and continues the processing. . If Yes in step S70, the control unit 80 stops the operations of the display panel 20, the light control panel 30, and the camera 70. FIG.
  • the image display device 1 includes the light-transmitting self-luminous display panel 20 (an example of the display panel), and the back surface of the display panel 20 (the surface on the Y-axis plus side).
  • a transmissive state in which the light transmitted through the display panel 20 is transmitted to the camera 70 and an opaque state in which the light is not transmitted rather than the transmissive state
  • It is arranged between the light control panel 30 having the light control unit 30a that can be switched from one to the other, the display panel 20 and the camera 70, and in plan view, the area other than the area overlapping the light control unit 30a on the back surface of the display panel 20
  • a non-transmissive portion 30b (an example of a light shielding portion) covering the area of
  • a normal mode an example of an image display mode
  • the display panel 20 and a control unit 80 for switching a Web conference mode (an example of a photographing mode) for displaying an image in the light control unit 30a and setting the light control unit 30a to a transmission state.
  • the image display device 1 does not block the light entering the camera 70 from the front of the image display device 1 because the display panel 20 itself cannot perform black display, unlike a liquid crystal panel or the like. . That is, in the image display device 1, even if the lens of the camera 70 is made smaller, the user in front of the image display device 1 can be photographed. Therefore, the image display device 1 can reduce the size of the lens of the camera 70, so that the camera 70 can be suppressed from being seen in the Web conference mode.
  • the light control panel 30 covers a region (for example, an opaque region R2) other than the region overlapping the light control portion 30a on the back surface of the display panel 20, and is opaque in both the normal mode and the Web conference mode. It has an opaque portion 30b that maintains its state. Then, the light shielding portion is configured by the opaque portion 30b.
  • a region for example, an opaque region R2
  • the light shielding portion is configured by the opaque portion 30b.
  • the non-transmissive portion 30b can prevent the user from viewing the portion other than the lens of the camera 70.
  • the light control panel 30 can realize the light control unit 30a and the light shielding unit. That is, it is possible to realize the light control section 30a and the light shielding section with one component. Therefore, the configuration of the image display device 1 can be simplified.
  • the light control panel 30 has a first electrode portion 41 and a second electrode portion 61 arranged to face each other in the light control portion 30a, and between the first electrode portion 41 and the second electrode portion 61, , and a light control layer 50 provided to cover the display panel 20, and in the opaque portion 30b, a first wiring portion 42 for applying a voltage to the first electrode portion 41, and a second electrode portion and a second wiring portion 62 for applying a voltage to 61 .
  • the first wiring portion 42 and the second wiring portion 62 are formed so as not to overlap each other in plan view of the image display device 1 (for example, plan view of the light control panel 30).
  • the image display device 1 can set only the region where the first electrode portion 41 and the second electrode portion 61 of the light control panel 30 overlap with each other to be in a transmissive state.
  • the image display device 1 can make only the region of the light control panel 30 corresponding to the lens of the camera 70 transparent. Therefore, the image display device 1 can further suppress the camera 70 from being visually recognized by the user.
  • control unit 80 controls each of the light control unit 30a and the non-transmissive unit 30b to be in the non-transmissive state, and in the Web conference mode, the control unit 80 changes the light control unit 30a to the transmissive state and the non-transmissive unit 30b. may be controlled to an opaque state.
  • control unit 80 can set only the light control unit 30a of the light control panel 30 to the transmission state in the Web conference mode.
  • the image display device 1 can set only the region of the light control panel 30 corresponding to the lens of the camera 70 to the transparent state. Therefore, the image display device 1 can further suppress the camera 70 from being visually recognized by the user in the Web conference mode.
  • the controller 80 is not limited to controlling the opaque section 30b.
  • the light shielding portion is provided between the display panel 20 and the camera 70 so as to cover the rear surface of the display panel 20, and is composed of a light shielding member 140 having an opening A formed at a position corresponding to the photographing hole of the camera 70. be. Further, the light control panel 130 may be provided in the opening A.
  • the light shielding section can prevent the user from viewing portions other than the lens of the camera 70 regardless of the mode of the image display device 1a. Further, the image display device 1a can improve the contrast of the image displayed by the image display device 1a with a simple configuration such as the light shielding member 140 .
  • the light control panel 130 is provided between the first electrode portion 41 and the second electrode portion 61 that are arranged to face each other and the first electrode portion 41 and the second electrode portion 61 in the light control portion 130a.
  • a first wiring portion 42 for applying a voltage to the first electrode portion 41 and a voltage is applied to the second electrode portion 61. It may have a second wiring portion 62 for applying voltage.
  • the first wiring portion 42 and the second wiring portion 62 may be formed so as not to overlap each other in plan view of the image display device 1a (for example, plan view of the light control panel 130).
  • the image display device 1a can set only the region where the first electrode portion 41 and the second electrode portion 61 of the light control panel 130 overlap in the transmission state in the Web conference mode.
  • the image display device 1a can set only a region of the light control panel 130 corresponding to the lens of the camera 70 to a transmissive state. Therefore, the image display device 1a can further suppress the camera 70 from being visually recognized by the user.
  • the diameter of the opening A is 1 mm or less.
  • the image display device 1a can make it difficult for the user to visually recognize the camera arranged behind the opening A.
  • control unit 80 applies a predetermined potential to the first electrode unit 41 and applies a potential opposite in phase to the predetermined potential to the second electrode unit 61 , so that the first electrode unit 41 and the second electrode portion 61 is switched to a transmissive state.
  • control section 80 can switch only the portion sandwiched between the first electrode section 41 and the second electrode section 61 in the light control layer 50 to the transmissive state. That is, the portion of the light control layer 50 sandwiched between the first electrode portion 41 and the second electrode portion 61 can be maintained in a transmissive state in the Web conference mode. Therefore, in the Web conference mode, the control unit 80 can perform photographing with the camera 70 while suppressing the camera 70 from being viewed.
  • control section 80 holds the light control layer 50 sandwiched between the first electrode section 41 and the second electrode section 61 in an opaque state.
  • control unit 80 can hide the camera 70 in the normal mode, thereby suppressing the camera 70 from being viewed by the user.
  • the light control section 30a and the camera 70 are provided in the center of the display panel 20 in plan view of the image display device 1 (for example, plan view of the display panel 20).
  • the image display device 1 can allow the user to visually recognize an image as if someone is really speaking to the user, thereby enhancing the sense of reality. Further, when taking a self-portrait using a smartphone or the like, the image display device 1 can photograph the image of the user (the image of the user displayed on the display panel 20) in the line of sight.
  • the display panel 20 is a transparent OLED (Organic Light Emitting Diode) panel.
  • the transmittance of the display panel 20 is high, brighter light can enter the camera 70 in the Web conference mode, so the lens of the camera 70 can be made smaller. Therefore, it is possible to further prevent the camera 70 from being visually recognized.
  • the image display device has been described as having one camera, but it is not limited to this.
  • the image display device includes two or more cameras, and the two or more cameras may be arranged at different positions in plan view. Moreover, when two or more cameras are provided, the image display device may have two or more light control areas.
  • the present invention is not limited to this.
  • the light control panel may be configured to be in a non-transmissive state when there is a potential difference between the electrode portions and to be in a transmissive state when there is no potential difference.
  • the third electrode portion and the fourth electrode portion may be formed on the light control panel, and an alternating voltage may be applied so as to generate a potential difference between the third electrode portion and the fourth electrode portion. .
  • control unit in the above embodiment may further perform control to hide an image on the display panel and switch to a transmission mode for switching the light control panel to a transmission state.
  • the controller may switch between, for example, the normal mode and the transparent mode.
  • the order of multiple processes described in the above embodiment is an example.
  • the order of multiple processes may be changed, and multiple processes may be executed in parallel. Also, some of the multiple processes may not be executed.
  • each component described in the above embodiments may be realized as software, or typically as an LSI, which is an integrated circuit. These may be made into one chip individually, or may be made into one chip so as to include part or all of them.
  • LSI is used here, it may also be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration.
  • the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor.
  • An FPGA that can be programmed after the LSI is manufactured or a reconfigurable processor that can reconfigure the connections or settings of the circuit cells inside the LSI may be used.
  • an integrated circuit technology that replaces the LSI emerges due to advances in semiconductor technology or another technology derived from it, the component may naturally be integrated using that technology.
  • the division of functional blocks in the block diagram is an example, and a plurality of functional blocks can be realized as one functional block, one functional block can be divided into a plurality of functional blocks, and some functions can be moved to other functional blocks.
  • single hardware or software may process the functions of a plurality of functional blocks having similar functions in parallel or in a time-sharing manner.
  • each component may be configured with dedicated hardware or realized by executing a software program suitable for each component.
  • Each component may be realized by reading and executing a software program recorded in a recording medium such as a hard disk or a semiconductor memory by a program execution unit such as a CPU or processor.
  • these general or specific aspects may be realized by a system, method, integrated circuit, computer program, or a recording medium such as a computer-readable CD-ROM. and any combination of recording media.
  • the recording medium may be a non-temporary recording medium.
  • the present disclosure is effective for image display devices equipped with cameras.
  • Reference Signs List 1 1a image display device 10 protective plate 20 display panel 30, 130 light control panel 30a, 130a light control section 30b, 140a opaque section 40 first substrate 41 first electrode section 42 first wiring section 50 light control layer 60 th 2 substrate 61 second electrode part 62 second wiring part 70 camera 80 control part 140 light shielding member A opening D diameter R1 light control area R2 non-transmissive area

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Abstract

Le présent dispositif d'affichage d'image (1) comprend : un panneau d'affichage translucide auto-éclairant (20) ; un appareil de prise de vues (70) positionné sur la surface arrière du panneau d'affichage (20) ; un panneau de réglage de lumière (30) positionné entre le panneau d'affichage (20) et l'appareil de prise de vues (70) et comportant une unité de réglage de lumière (30a) capable de commuter entre un état transmissif dans lequel la lumière qui a traversé le panneau d'affichage (20) est transmise à l'appareil de prise de vues (70) et un état non transmissif dans lequel la lumière n'est pas transmise par comparaison à l'état transmissif ; une section de non-transmission (30b) qui est positionnée entre le panneau d'affichage (20) et l'appareil de prise de vues (70) et qui recouvre une région de la surface arrière du panneau d'affichage (20) dans une vue en plan autre que la région chevauchant l'unité de réglage de lumière (30a) ; et une unité de commande (80) qui commute entre un mode d'affichage d'image dans lequel une image est affichée sur le panneau d'affichage (20) et dans lequel l'unité de réglage de lumière (30a) est mise dans l'état non transmissif, et un mode de photographie dans lequel l'image est affichée sur le panneau d'affichage (20) et dans lequel l'unité de réglage de lumière (30a) est mise dans l'état transmissif.
PCT/JP2022/000021 2021-02-12 2022-01-04 Dispositif d'affichage d'image WO2022172644A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2002094955A (ja) * 2000-02-22 2002-03-29 Philips Japan Ltd 画像表示撮像装置
US20190324304A1 (en) * 2017-05-12 2019-10-24 Beijing Boe Optoelectronics Technology Co., Ltd. Photographic camera and display device
US20190208044A1 (en) * 2018-01-03 2019-07-04 Lg Electronics Inc. Mobile terminal
US20190369422A1 (en) * 2018-05-31 2019-12-05 Beijing Xiaomi Mobile Software Co., Ltd. Display structure and electronic device
JP2020020849A (ja) * 2018-07-30 2020-02-06 株式会社ジャパンディスプレイ 電子機器
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