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WO2017217009A1 - Appareil d'affichage d'image - Google Patents

Appareil d'affichage d'image Download PDF

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Publication number
WO2017217009A1
WO2017217009A1 PCT/JP2017/005522 JP2017005522W WO2017217009A1 WO 2017217009 A1 WO2017217009 A1 WO 2017217009A1 JP 2017005522 W JP2017005522 W JP 2017005522W WO 2017217009 A1 WO2017217009 A1 WO 2017217009A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective plate
transparent protective
image display
liquid crystal
display area
Prior art date
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/JP2017/005522
Other languages
English (en)
Japanese (ja)
Inventor
岩崎　直子
貴典 奥村
俊明 藤野
結城　昭正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of WO2017217009A1 publication Critical patent/WO2017217009A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • G09F9/40—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 is selected from a number of characters arranged one beside the other, e.g. on a common carrier plate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information

Definitions

  • the present invention relates to an image display apparatus that displays an image using a plurality of image display panels.
  • the image display device includes an image display panel such as a liquid crystal panel or an organic EL (Electroluminescence) panel, and displays a still image or a moving image in a display area which is a screen of the image display panel.
  • Image display devices are widely used as display devices for information terminal equipment such as home television receivers and personal computers, and their applications are extended to various fields such as FA (factory automation) equipment, automobiles, trains, and aircraft. ing.
  • the screen of an image display device generally has a rectangular planar shape.
  • a flat screen is used for the purpose of adapting the image display device to various uses and installation locations, or with an emphasis on design.
  • curved screens such as curved surfaces have been demanded.
  • a method for realizing such a curved screen a plurality of image display panels having a display area which is a flat screen are arranged so that the angles formed by the screens of the respective image display panels are obtuse, and curved.
  • An image display apparatus that realizes a planar screen is known.
  • a conventional image display device two flat image display panels each having a display surface having a rectangular flat display area and a non-display area such as a frame on the outer periphery of the display area are used.
  • the angle formed by the display area of the display panel is arranged side by side so that the angle is obtuse, and the light guide element is provided at the boundary portion on the display surface side of the two image display panels.
  • the light guide element has an incident surface on the display surface side of the image display panel and an output surface on the observation side observed by an observer, and a large number of optical fibers, sheet laminates, and the like between the incident surface and the output surface.
  • a light guide is provided, and light emitted from the display area of the image display panel and incident on the incident surface of the light guide element is emitted from the output surface to be viewed by an observer. Then, the incident surface of the light guide element is opposed to only the display areas of the two image display panels, and an emission surface for emitting the light emitted from the display areas of the two image display panels is continuously formed. By doing so, an area where no image is displayed is eliminated at the boundary between the two image display panels, and the image is viewed as one continuous screen (for example, see Patent Document 1).
  • the light guide element provided at the boundary portion on the display surface side of the two image display panels has a light guide path such as an optical fiber or a sheet laminate. Since it is configured by bundling a plurality, the straightness of light emitted from the light guide element is enhanced. As a result, when the image display panel is observed from the exit direction of the light guide element, an area where no image is displayed can be eliminated, but when the image display device is observed from a direction inclined from the exit direction of the light guide element. The light emitted from the light guide element is difficult to be seen, and the image is seen as if it was divided at the center, so that the screen of the image display device cannot be seen as a continuous screen. there were.
  • the present invention has been made to solve the above-described problems, and allows a screen configured by using a plurality of image display panels having a non-display area on the outer periphery of the display area to be visually recognized as a continuous screen.
  • An object is to provide an image display device.
  • An image display device includes a first image display panel having a first display area and a first non-display area provided on the outer periphery of the first display area on the observation side, The display area and a second non-display area provided on the outer periphery of the second display area are provided on the observation side, and the second non-display is performed along the first non-display area of the first image display panel.
  • a transparent protective plate having a first reflecting surface that reflects an image displayed in a partial area of the display area. Direction and the first back surface image is reflected by the first reflecting surface, intersect outside the first display area of the first image display module.
  • the first reflecting surface extending from the first back surface to the front surface of the transparent protective plate arranged to face the display area of the first image display panel is the first.
  • An image displayed in a part of the display area of the image display panel is reflected to the viewing side, and the direction in which the image is reflected intersects the first back surface outside the display area of the first image display panel. Therefore, it is possible to provide an image display device that visually recognizes the front surface of the transparent protective plate as a continuous screen.
  • FIG. 1 is a perspective view showing a configuration of an image display apparatus according to Embodiment 1 of the present invention.
  • FIG. 1 also shows the xyz orthogonal axes.
  • FIG. 1 is a perspective view showing a configuration of an image display apparatus according to Embodiment 1 of the present invention.
  • FIG. 1 also shows the xyz orthogonal axes.
  • the direction of the arrow on the y axis is the front or front side
  • the direction opposite to the arrow on the y axis is the rear or back side
  • the direction of the arrow on the x axis is the right side
  • the direction opposite to the arrow on the x axis is On the left side, the direction of the z-axis arrow is called upward, and the direction opposite to the z-axis arrow is called downward.
  • an image display device 100 includes a first image display module 20a and a second image display module 20b, and a transparent protective plate 30 as a protection member provided on the observation side of the image display modules 20a and 20b. I have.
  • the image display device 100 may include other components such as a housing and a connection terminal for an external device.
  • the observation side refers to a side on which an observer observes an image displayed on the image display device 100.
  • the first image display module 20a and the second image display module 20b have the same structure, but two image display modules having different structures may be used.
  • the first image display module 20a is disposed to be inclined rearward from the xz plane, and the second image display module 20b is disposed in parallel to the xy plane.
  • first and second are omitted.
  • the constituent members of the first image display module 20a are referred to as “first”, and the constituent members of the second image display module 20b are referred to as “second”. In some cases, “first” and “second” are omitted.
  • the image display modules 20a and 20b have a flat plate shape, and one side is a display surface for displaying an image. Since the display surfaces of the image display modules 20a and 20b are directed to the observation side, the observer can observe images displayed on the image display modules 20a and 20b. Therefore, in the present invention, the observation side refers to a side where an observer can visually recognize an image when the image is displayed on the image display device 100, and may be called a front side of the image display device 100.
  • the image display modules 20a and 20b include a liquid crystal panel or an organic EL panel as an image display panel.
  • a case where the image display panel of the image display module is a liquid crystal panel will be described.
  • the case where the liquid crystal panel is a transmissive type is described, but a reflective or transflective liquid crystal panel may be used.
  • the case where the first image display module 20a and the second image display module 20b have the same structure will be described.
  • the first image display module and the second image display module are different. It may be a structure. However, it is preferable that the first image display module and the second image display module have the same structure.
  • each of the image display modules 20a and 20b includes a first liquid crystal panel 15a and a second liquid crystal panel 15b in the housing of the image display module.
  • the liquid crystal panels 15a and 15b have a rectangular flat plate shape, and one side is a display surface.
  • the shapes of the liquid crystal panels 15a and 15b are not necessarily rectangular.
  • the liquid crystal panels 15a and 15b expose the display areas which are the screens of the liquid crystal panels 15a and 15b from the image display modules 20a and 20b so that the display surfaces of the liquid crystal panels 15a and 15b can be observed from the outside of the image display modules 20a and 20b.
  • the image display modules 20a and 20b are provided in the housing. Accordingly, the screen of the first liquid crystal panel 15a constitutes the screen of the first image display module 20a, and the screen of the second liquid crystal panel 15b constitutes the screen of the second image display module 20b.
  • the entire surface having the screens of the plate-like image display modules 20a and 20b and the liquid crystal panels 15a and 15b is referred to as a display surface.
  • the display surface includes a display area that is a screen for displaying an image and a non-display area such as a frame provided on the outer periphery of the display area.
  • the display area and the screen are the same, but in the entire image display device of the present invention, the front surface of the transparent protective plate is called the screen.
  • the first image display module 20a and the second image display module 20b are arranged with their respective display surfaces facing the observation side and one end thereof being adjacent to each other. That is, the display side of the first liquid crystal panel 15a provided in the first image display module 20a and the display surface of the second liquid crystal panel 15b provided in the second image display module 20b are both viewed on the observation side.
  • the end portion along the x direction of the display surface of the second liquid crystal panel 15b is aligned with the end portion along the x direction of the display surface of the first liquid crystal panel 15a.
  • 15a and a second liquid crystal panel 15b are arranged.
  • each liquid crystal panel 15a, 15b has a non-display area at the outer periphery of the display area in the display surface, the first liquid crystal panel 15a and the second liquid crystal panel 15b are along one non-display area.
  • the other non-display area is arranged.
  • the first liquid crystal panel 15a and the second liquid crystal panel 15b are arranged such that the ends of the first liquid crystal panel 15a and the second liquid crystal panel 15b face each other, and each display surface faces the viewing side.
  • the liquid crystal panels 15a and 15b include, for example, a rectangular display area having a long side of about 250 mm and a short side of about 200 mm on the display surface, and the second liquid crystal panel 15a has a second side at the end on the long side. The end of the long side of the liquid crystal panel is adjacent.
  • the size of the liquid crystal panel 15 is not limited to this, and can be arbitrarily set. Further, the first liquid crystal panel 15a and the second liquid crystal panel 15b are adjacent to each other on the short side. May be.
  • the first liquid crystal panel 15a and the second liquid crystal panel 15b are arranged so that an angle formed by each display surface is less than 180 °. That is, it arrange
  • the angle formed by the display surface of the first liquid crystal panel 15a and the display surface of the second liquid crystal panel 15b may be 180 ° or may be an angle exceeding 180 °.
  • the first liquid crystal panel 15a and the second liquid crystal panel 15b have an angle formed by the respective display surfaces, for example, 140 °.
  • a transparent protective plate 30 is provided on the observation side of the first image display module 20a and the second image display module 20b.
  • the transparent protective plate 30 is made of a resin having a refractive index of about 1.5 or 1.5 or more and highly transparent to visible light, such as polymethyl methacrylate resin (hereinafter referred to as PMMA) or polycarbonate resin. Yes.
  • PMMA polymethyl methacrylate resin
  • the transparent protective plate 30 is manufactured by PMMA machining or injection molding using a mold.
  • the transparent protective plate 30 is formed so that the internal refractive index is uniform. In the image display device 100 shown in FIG. 1, the light propagating through the transparent protective plate 30 is surrounded by the transparent protective plate 30. It is formed so as not to be reflected on the surface other than that constituting the.
  • the uniform internal refractive index means that the internal refractive index is uniform and the internal refractive index is uniform. Further, it is sufficient that the refractive index inside the transparent protective plate 30 is designed to be uniform, and the internal refractive index does not need to be a constant value. That is, the transparent protective plate 30 is designed and configured so that the light propagating through the inside travels straight regardless of the traveling direction. The transparent protective plate 30 is designed so that the internal refractive index is a constant value. However, the refractive index distribution caused by manufacturing errors such as the residual stress due to machining or injection molding of the transparent protective plate 30 is transparent. Even in the interior, the light propagating through the interior is allowed because it travels substantially straight. That is, the refractive index inside the transparent protective plate 30 is not required to have a refractive index distribution that periodically changes with respect to the position as in the light guide element described in Patent Document 1.
  • the transparent protective plate 30 includes a front surface 30a provided on the observation side, a first back surface 30b and a second back surface 30c provided on the back side of the front surface 30a, and a first back surface 30b and a second back surface 30c. And a V-shaped groove portion 32 provided therebetween. Further, side surfaces 30d connected to the front surface 30a, the first back surface 30b, and the second back surface 30c are provided at both ends in the x direction, that is, the left and right ends of the transparent protective plate 30, and further, the front surface 30a and the first back surface 30c are provided. An end surface 30e connected to the back surface 30b and an end surface 30e connected to the front surface 30a and the second back surface 30c are provided.
  • the first back surface 30b is disposed to face the display surface of the first liquid crystal panel 15a
  • the second back surface 30c is disposed to face the display surface of the second liquid crystal panel 15b.
  • the first back surface 30b and the second back surface 30c are preferably sized to cover the entire display area of each of the first liquid crystal panel 15a and the second liquid crystal panel 15b.
  • the display surface of the first liquid crystal panel 15a and the first back surface 30b are bonded and bonded with an adhesive that has a refractive index similar to that of the transparent protective plate 30 and is transparent to visible light.
  • the display surface of the second liquid crystal panel 15b and the second back surface 30c are bonded and bonded together with an adhesive that has a refractive index similar to that of the transparent protective plate 30 and is transparent to visible light.
  • an adhesive the adhesive comprised with materials, such as an acrylic type, a silicone type, and a urethane type, may be sufficient, for example.
  • the display surfaces of the liquid crystal panels 15a and 15b are flat, and the first back surface 30b and the second back surface 30c are flat.
  • the first back surface 30b and the second back surface 30c may be curved surfaces that match the shapes of the display surfaces of the liquid crystal panels 15a and 15b.
  • the front surface 30a is a curved surface, more specifically, a curved surface that is concave on the viewing side, and has an arcuate shape in the arrangement direction of the first liquid crystal panel 15a and the second liquid crystal panel 15b. It is curved.
  • the front surface 30a may be a flat surface, not necessarily a curved surface, and may be a curved surface having a curved shape that is convex toward the observation side. Moreover, the curved surface which connected the edge part of a plane and the edge part of a curved surface which connected the edge part of the some plane mutually may be sufficient.
  • the first back surface 30b and the second back surface 30c are flat surfaces, and the angle formed by the first back surface 30b and the second back surface 30c is the same as that of the first liquid crystal panel 15a. It is the same as the angle formed by the second liquid crystal panel 15b, and is an obtuse angle, for example, 140 °.
  • the front surface 30a is a curved surface having a concave curved shape on the observation side. More specifically, the cross-sectional shape on the yz plane, that is, the shape viewed from the side surface 30d side, is the first back surface 30b.
  • the central portion of the front surface 30a along the boundary with the second back surface 30c has a curvature radius of 300 mm and is curved in a concave shape with respect to the observation side, and is connected to the end surface 30e far from the central portion.
  • the flat surface In the vicinity of the portion, the flat surface is substantially parallel to the first back surface 30b or the second back surface 30c. For this reason, the thickness of the transparent protective plate 30 increases from both end portions on both end surfaces 30e side toward the boundary portion between the first back surface 30b and the second back surface 30c.
  • the shape of the front surface 30a of the transparent protective plate 30 is not limited to a concave curved surface on the observation side, and may be a convex curved surface on the observation side or a flat surface. Further, when the front surface 30a of the transparent protective plate 30 is a curved surface, the curvature of the curved surface may not be constant, and may be curved into a shape with a changing curvature such as a hyperbola or a parabola. Furthermore, the front surface 30a of the transparent protective plate 30 may be a curved surface of another shape such as a bent surface or a hemispherical surface instead of a curved surface.
  • a groove portion 32 having a V-shaped cross section is provided along the x direction.
  • the V-shaped groove portion 32 has a first side surface 32a and a second side surface 32b.
  • the first side surface 32a is connected to the end of the first back surface 30b, and the second side surface 32b. Is connected to the end of the second back surface 30c. That is, the first back surface 30b of the transparent protective plate 30 has a linear end portion along the x direction, and the first side surface 32a of the V-shaped groove portion 32 is connected to this end portion.
  • the second back surface 30c of the transparent protective plate 30 has a linear end portion along the x direction, and the second side surface 32b of the V-shaped groove portion 32 is connected to this end portion. .
  • the first side surface 32a and the second side surface 32b of the V-shaped groove 32 are reflective surfaces on the surface facing the inside of the transparent protective plate 30, that is, the back surface facing the observation side. Accordingly, the light that has exited from the display area of the first liquid crystal panel 15a, travels straight through the inside of the transparent protective plate 30 and is incident on the first side surface 32a of the V-shaped groove 32 is reflected, and again the transparent protective plate 30. Straight from the front surface 30a, emitted from the display area of the second liquid crystal panel 15b, straight through the transparent protective plate 30, and incident on the second side surface 32b of the V-shaped groove 32. The light is reflected, travels straight inside the transparent protective plate 30 again, and is emitted from the front surface 30a.
  • first side surface 32a and the second side surface 32b of the V-shaped groove 32 are reflection surfaces that reflect an image displayed in a partial region of the display region of each liquid crystal panel toward the observation side. Further, the first side surface 32a and the second side surface 32b of the V-shaped groove 32 are mirror surfaces that reflect a mirror image of an image displayed in a partial region of the display region of each liquid crystal panel toward the observation side by reflection. In addition, the mirror image reflected on the observation side surfaces of the first side surface 32 a and the second side surface 32 b is observed from the front surface 30 a of the transparent protective plate 30.
  • the V-shaped groove 32 displays the first liquid crystal panel 15a so that a mirror image of the image in the display area of the first liquid crystal panel 15a is displayed as a virtual image in the transparent protective plate 30 that is a transparent protective member. It has the 1st side surface 32a which is the 1st reflective surface which reflects the light radiate
  • the V-shaped groove portion 32 may be provided over the entire width of the transparent protective plate 30, but only in the region where the end portions of the display surfaces of the first and second liquid crystal panels 15a and 15b exist. May be provided. Details of the V-shaped groove 32 will be described later.
  • FIG. 2 is a cross-sectional view showing the configuration of the image display module according to Embodiment 1 of the present invention.
  • the image display module 20 includes a liquid crystal panel 15, a backlight 16, and a control board 17.
  • the backlight 16 is installed on the back side of the liquid crystal panel 15, and the backlight 16 and the liquid crystal panel 15 are electrically connected to the control board 17.
  • a drive signal or drive power is supplied from the control board 17 to the liquid crystal panel 15 and the backlight 16
  • an image is displayed on the liquid crystal panel 15, and the backlight 16 is turned on.
  • the liquid crystal panel 15 includes a color filter substrate 13 on the front side and a TFT substrate 14 on the back side, and the liquid crystal 1 is sealed between the color filter substrate 13 and the TFT substrate 14.
  • the TFT substrate 14 is a substrate on which a thin film transistor (hereinafter referred to as TFT) array is formed.
  • TFT thin film transistor
  • the light emitted from the backlight 16 disposed on the back side of the liquid crystal panel 15 enters from the TFT substrate 14 side and exits from the color filter substrate 13 side. Accordingly, since an image is displayed on the color filter substrate 13 side of the liquid crystal panel 15, the surface of the color filter substrate 13 becomes the display surface of the liquid crystal panel 15. Since the image displayed on the display surface of the liquid crystal panel 15 is visible from the color filter substrate 13 side and not from the TFT substrate 14 side, the color filter substrate 13 side of the liquid crystal panel 15 is the observation side.
  • the color filter substrate 13 is formed by sequentially laminating the color filter 12, the counter electrode 4, and the alignment film 5 on the surface of the glass substrate 2 on the liquid crystal 1 side, and polarized on the surface of the glass substrate 2 opposite to the liquid crystal 1.
  • the plate 3 is configured by being attached with an adhesive or the like.
  • the TFT substrate 14 is formed by sequentially laminating the TFT array 10 and the alignment film 11 on the surface of the glass substrate 8 on the liquid crystal 1 side, and the polarizing plate 9 is formed on the surface of the glass substrate 8 opposite to the liquid crystal 1. Affixed with an adhesive or the like.
  • the alignment film 5 and the alignment film 11 are for aligning the molecules of the liquid crystal 1 in a predetermined direction, and are formed of, for example, a polyimide film having a thickness of several tens of nanometers.
  • the counter electrode 4 formed on the color filter substrate 13 is formed by forming a transparent conductive film such as indium tin oxide (hereinafter referred to as ITO) with a thickness of about 50 to 150 nm, for example.
  • the TFT array 10 formed on the TFT substrate 14 includes a pixel electrode for applying a voltage to the liquid crystal 1, a switching element such as a TFT for controlling the voltage applied to the liquid crystal 1, an insulating film covering the switching element, A gate wiring and a source wiring for supplying a signal to the switching element are included.
  • the counter electrode 4 and the TFT array 10 are electrically connected to the control substrate 17, and a voltage is applied to the liquid crystal 1 by applying a voltage between the counter electrode 4 and the pixel electrode of the TFT array 10.
  • a TFT is used as a switching element in the liquid crystal panel 15, but the liquid crystal panel is not limited to this, and another switching element may be used.
  • the color filter 12 formed on the color filter substrate 13 includes a color filter color material 6 that transmits light in a specific wavelength range corresponding to red, green, and blue provided for each pixel, and adjacent red, And a black matrix 7 disposed between the green and blue pixels to block light.
  • a color filter color material 6 for example, a colored polyimide resin, acrylic resin, or epoxy resin may be formed with a film thickness of about 1 ⁇ m.
  • the black matrix 7 is a film excellent in light-shielding properties, and may be formed using a film made by adding carbon to a resin to make it black, or a metal chrome film. For example, a resinous black matrix having a film thickness of about 1 to 3 ⁇ m You may form with thickness.
  • the black matrix 7 is disposed between the red, green, and blue pixels, and is also disposed on the outer periphery of the region where all the pixels are arranged to form a region that blocks light.
  • a gap material (not shown) for maintaining a constant distance between the color filter substrate 13 and the TFT substrate 14 is provided between the color filter substrate 13 and the TFT substrate 14.
  • the liquid crystal panel 15 is configured by bonding a peripheral portion with the TFT substrate 14 with a sealing material (not shown) made of resin. As a result, the liquid crystal 1 is infused into the sealed space formed by the color filter substrate 13, the TFT substrate 14, and the sealing material.
  • the gap material may be, for example, a granular gap material dispersed on the color filter substrate 13 and the TFT substrate 14, and is formed by patterning a resin on the color filter substrate 13 or the TFT substrate 14.
  • a columnar gap material may be used.
  • the liquid crystal panel 15 is, for example, a twisted nematic (twisted nematic: TN) mode liquid crystal panel. Further, the liquid crystal panel 15 may operate in other operation modes.
  • the operation mode of the liquid crystal panel 15 is a VA (Vertically Aligned) mode, an in-plane switching (abbreviated as IPS) mode, a super twisted nematic (abbreviated as STN) mode, or a ferroelectric property.
  • VA Very Aligned
  • IPS in-plane switching
  • STN super twisted nematic
  • ferroelectric property a ferroelectric property
  • a liquid crystal mode may be used.
  • the driving method of the liquid crystal panel 15 may be, for example, a simple matrix method or an active matrix method.
  • a backlight 16 is provided on the back side of the liquid crystal panel 15.
  • the backlight 16 is a surface light source having a planar light emitting region so that light emitted from the backlight 16 passes through an area where all the pixels of the liquid crystal panel 15 are arranged, that is, the entire display area.
  • the backlight 16 may be a surface light source that is a combination of a point light source or a line light source such as a light emitting diode or a fluorescent tube and a light guide plate or a diffusion plate, or a plate-like or sheet-like electroluminescent element is used.
  • a surface light source may be used.
  • the liquid crystal panel 15 and the backlight 16 are connected to the control board 17, and these are arranged in the housing of the image display module 20, whereby the image display module 20 is configured.
  • the control substrate 17 includes a control integrated circuit (Integrated Circuit: hereinafter referred to as IC) and the like, and a voltage applied to the liquid crystal 1 from the pixel electrode of the TFT array 10 formed on the TFT substrate 14 of the liquid crystal panel 15.
  • the liquid crystal 1 is driven by controlling.
  • the control board 17 includes a lighting circuit for the backlight 16, and controls the lighting operation of the backlight 16 by supplying driving power to the backlight 16.
  • FIG. 3 is a plan view showing the configuration of the image display module according to Embodiment 1 of the present invention.
  • FIG. 3 is a plan view of the image display module 20 shown in FIG. 2 as viewed from the color filter substrate 13 side, that is, from the observation side.
  • the image display module 20 includes a liquid crystal panel 15, a control board 17, and a flexible flat cable (Flexible Flat Cable: hereinafter referred to as FFC) that electrically connects the liquid crystal panel 15 and the control board 17. 26.
  • FFC Flexible Flat Cable
  • the liquid crystal panel 15 encloses liquid crystal between a color filter substrate 13 provided on the observation side and a TFT substrate 14 provided on the back side of the color filter substrate 13, and the periphery is a sealing material. 21 are bonded together.
  • the end portion of the color filter substrate 13 and the end portion of the TFT substrate 14 on the upper side of FIG. 3 are arranged with the same position, and constitutes a linear end portion of the liquid crystal panel 15.
  • the end of the color filter substrate 13 on the lower side in FIG. 3 and the end of the TFT substrate 14 are not aligned, and the TFT substrate 14 is longer in the vertical direction than the color filter substrate 13. Is getting longer.
  • the TFT substrate 14 is provided with a terminal 25 for inputting a driving signal for a switching element provided on the TFT substrate 14 in the exposed region.
  • a drive signal is supplied to the liquid crystal panel 15 from the drive IC provided on the control board 17.
  • the viewing side of the liquid crystal panel 15 has a flat display surface, a rectangular display region 22 having a plurality of pixels and displaying an image, and a non-display region provided on the outer periphery of the display region 22 23.
  • a black matrix 7 is provided around the display area 22 and constitutes a part of the non-display area 23. As described with reference to FIG. 2, the black matrix 7 is also provided in a matrix between the pixels of the color filter 12, and the black matrix 7 illustrated in FIG. 3 is the black matrix provided in the color filter 12. Part of the matrix.
  • the non-display area 23 is formed between the display area 22 and the linear end of the display surface of the liquid crystal panel 15 configured by aligning the ends of the color filter substrate 13 and the TFT substrate 14. 24 is provided.
  • the non-display area 24 is a part of the non-display area 23.
  • the backlight 16 is disposed on the back side of the liquid crystal panel 15, that is, on the side opposite to the observation side.
  • the control board 17 is provided on the lower side of the liquid crystal panel 15, but the FFC 26 is bent in a U-shape, and the control board 17 is disposed further on the back side of the backlight 16.
  • the liquid crystal panel 15, the backlight 16, and the control board 17 configured as described above are housed in a housing (not shown) to constitute the image display module 20.
  • the casing is made of metal or opaque resin, and the observation side of the image display module 20 is formed in a frame shape so as to cover the outer periphery of the liquid crystal panel 15, and the display surface of the liquid crystal panel 15 is displayed on the display of the image display module 20. It is configured to be exposed on the surface.
  • V-shaped groove 32 provided on the transparent protective plate 30 and its peripheral structure will be described in detail.
  • FIG. 4 is a partial cross-sectional view of the image display device according to Embodiment 1 of the present invention.
  • the partial cross-sectional view of FIG. 4 is a cross-sectional view taken along the cutting plane AA of FIG. 1, and is a cross-sectional view taken along a plane parallel to the side surface 30d of the transparent protective plate 30 parallel to the yz plane.
  • the backlight, the control board, and the casing that constitute the image display module are omitted, and only the liquid crystal panel 15 is illustrated and shown as the constituent members of the image display module. Yes.
  • the first liquid crystal panel 15a and the second liquid crystal panel 15b are arranged such that the end portions on the side where the non-display area 24a and the non-display area 24b are provided are adjacent to each other.
  • the display surfaces provided on the observation side of the first and second liquid crystal panels 15a and 15b are display regions 22a and 22b, and non-display regions provided between the end portions of the display surface and the display regions 22a and 22b. 24a and 24b, and the non-display area 24b of the second liquid crystal panel 15b is arranged along the non-display area 24a of the first liquid crystal panel 15a.
  • the first liquid crystal panel 15a and the second liquid crystal panel 15b are arranged with their end portions different from the end portion to which the terminal 25 is provided and the FFC 26 is connected adjacent to each other.
  • the ends of the display surfaces of the liquid crystal panels 15a and 15b provided with the non-display regions 24a and 24b are linear with respect to the direction perpendicular to the paper surface of FIG.
  • the angle formed by the first liquid crystal panel 15a and the second liquid crystal panel 15b is an obtuse angle, for example, 140 °.
  • a transparent protective plate 30 is provided on the observation side of the first liquid crystal panel 15a and the second liquid crystal panel 15b.
  • the transparent protective plate 30 is provided with a first back surface 30b facing the display region 22a of the first liquid crystal panel 15a, and a second surface facing the display region 22b of the second liquid crystal panel 15b.
  • a back surface 30c is provided.
  • the display area 22a of the first liquid crystal panel 15a and the first back surface 30b of the transparent protective plate 30 are bonded together by a sheet-like adhesive 80 that covers the entire surface facing the display area 22a of the first back surface 30b.
  • the display region 22b of the second liquid crystal panel 15b and the second back surface 30c of the transparent protective plate 30 are bonded together by a sheet-like adhesive 80 that covers the entire surface facing the display region 22b of the second back surface 30c. Yes.
  • the V-shaped groove part 32 which has the 1st side surface 32a and the 2nd side surface 32b is provided.
  • the V-shaped groove 32 is provided in the direction perpendicular to the plane of FIG. 4 along the non-display area 24a of the first liquid crystal panel 15a and the non-display area 24b of the second liquid crystal panel 15b.
  • the cross-sectional shape perpendicular to is V-shaped.
  • the first side surface 32a extends from the first back surface 30b toward the front surface 30a
  • the second side surface 32b extends from the second back surface 30c toward the front surface 30a.
  • connection part of the 1st side surface 32a of the V-shaped groove part 32 and the 1st back surface 30b is located on the boundary of the display area 22a of the 1st liquid crystal panel 15a, and the non-display area 24a of FIG. It is provided in the direction perpendicular to the page.
  • connection portion between the second side surface 32b of the V-shaped groove 32 and the second back surface 30c is located on the boundary between the display region 22b and the non-display region 24b of the second liquid crystal panel 15b, It is provided in the direction perpendicular to the paper surface of FIG.
  • the first back surface 30b of the transparent protective plate 30 is disposed to face the display region 22a of the first liquid crystal panel 15a, and the second back surface of the transparent protective plate 30 is disposed on the display region 22b of the second liquid crystal panel 15b.
  • the back surface 30c is disposed so as to be opposed, and the V-shaped groove portions 32 provided in the transparent protective plate 30 are disposed so as to be opposed to the non-display areas 24a and 24b of the first and second liquid crystal panels 15a and 15b.
  • the first side surface 32a and the second side surface 32b of the V-shaped groove 32 are mirror-finished mirror surfaces, and the surface roughness Ra of the surfaces of the first side surface 32a and the second side surface 32b is 200 nm. It is as follows. As a result, the first side surface 32a and the second side surface 32b have reflection surfaces on the back surface facing the observation side, and are emitted from the display areas 22a and 22b of the liquid crystal panels 15a and 15b. Light that is incident at various incident angles from the first back surface 30b and the second back surface 30c and travels straight in the transparent protective plate 30 in the direction of the refraction angle corresponding to each incident angle is transmitted through the first side surface.
  • the light When the light is incident on the second side surface 32b or the second side surface 32b, it is reflected only once by the reflection surface on the back surface of the first side surface 32a or the second side surface 32b, and the reflected light continues straight in the transparent protective plate 30. And is emitted from the front surface 30 a of the transparent protective plate 30.
  • the first side surface 32a projects a mirror image of a partial region of the first display region 22a toward the observation side
  • the second side surface 32b displays a mirror image of a partial region of the second display region 22b on the observation side. Projected towards.
  • These mirror images are observed through the front surface 30 a of the transparent protective plate 30. That is, the V-shaped groove 32 is emitted from the display area of the first liquid crystal panel 15a so that a mirror image of the image in the display area 22a of the first liquid crystal panel 15a is displayed as a virtual image in the transparent protective plate 30.
  • the second liquid crystal panel 15b so that a mirror image of the image in the display area of the second liquid crystal panel 15b is displayed as a virtual image in the transparent protective plate 30.
  • the reflective surfaces on the back surfaces of the first side surface 32a and the second side surface 32b are formed by the difference between the refractive index of the transparent protective plate 30 and the refractive index of a medium such as air in the V-shaped groove 32.
  • a medium such as air in the V-shaped groove 32.
  • the surfaces of the first side surface 32a and the second side surface 32b, that is, the inside of the V-shaped groove portion 32 are used.
  • a metal film may be provided by depositing a metal such as aluminum.
  • a front surface 30a having a smooth curved surface is provided on the observation side of the first back surface 30b and the second back surface 30c of the transparent protective plate 30, a front surface 30a having a smooth curved surface is provided. Then, it has an arcuate curved shape along an angle formed by the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b. That is, the front surface 30a of the transparent protective plate 30 is a curved surface along an angle formed by the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b.
  • an alternate long and short dash line BB is an angle bisector formed by the display region 22a of the first liquid crystal panel 15a and the display region 22b of the second liquid crystal panel 15b.
  • the first liquid crystal panel 15a and the second liquid crystal panel 15b are liquid crystal panels having the same structure, the first liquid crystal panel 15a, the second liquid crystal panel 15b,
  • the cross-sectional shape of the structure constituted by the transparent protective plate 30 has a line-symmetric shape with the one-dot chain line BB as the axis of symmetry.
  • the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove 32 has a line-symmetric shape with the one-dot chain line BB as the axis of symmetry. Therefore, the intersecting line between the first side surface 32a and the second side surface 32b of the V-shaped groove 32 is formed by the display region 22a of the first liquid crystal panel 15a and the display region 22b of the second liquid crystal panel 15b. Located on the bisector of the corner. As described above, the first liquid crystal panel 15a and the second liquid crystal panel 15b having the same structure are used, and the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b are provided.
  • the configuration in which the transparent protective plate 30 is provided so that the bisector of the angle formed is a symmetric surface is the best.
  • the first liquid crystal panel 15a and the second liquid crystal panel 15b have the same structure, but the first liquid crystal panel 15a and the second liquid crystal panel 15b have different structures. Even when the widths of the non-display areas 24a and 24b are different, the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove 32 is the same as the display area 22a of the first liquid crystal panel 15a and the second liquid crystal panel. It is preferable to have a line-symmetric shape with the bisector of the angle formed by the display area 22b of 15b as the axis of symmetry.
  • the position of the boundary between the display area 22a and the non-display area 24a of the first liquid crystal panel 15a or the position of the boundary between the display area 22b and the non-display area 24b of the second liquid crystal panel 15b is the first liquid crystal.
  • the first back surface 30b of the transparent protective plate 30 and the first of the V-shaped grooves 32 are located farther from the bisector of the corner formed by the display region 22a of the panel 15a and the display region 22b of the second liquid crystal panel 15b.
  • the connecting portion between the first side surface 32a or the connecting portion between the second back surface 30c and the second side surface 32b of the V-shaped groove 32 may be disposed opposite to each other.
  • the position of the boundary of the display area 22 and the non-display area 24 among the 1st liquid crystal panel 15a and the 2nd liquid crystal panel 15b will be the display area 22a of the 1st liquid crystal panel 15a, and 2nd.
  • the side closer to the bisector of the angle formed by the display area 22b of the liquid crystal panel 15b of the liquid crystal panel 15b is displayed at this portion because the end of the display area 22 near the non-display area 24 faces the V-shaped groove 32.
  • the cross-sectional shape of the V-shaped groove 32 is not line-symmetric. More preferable than shape.
  • the cross-sectional shape of the V-shaped groove 32 may be an asymmetric shape that is not line-symmetric.
  • the TFT substrate 14 of the liquid crystal panel 15 shown in FIG. 2 is formed on the surface of the glass substrate 8 on the liquid crystal 1 side by repeatedly using a pattern formation process such as film formation, patterning by photolithography, etching, etc. It is manufactured by forming a pixel electrode, a terminal, a transfer electrode, and the like. Similar to the TFT substrate 14, the color filter substrate 13 is manufactured by forming the color filter 12 and the counter electrode on the surface of the glass substrate 2 on the liquid crystal 1 side.
  • the TFT substrate 14 and the color filter substrate 13 are bonded together. Specifically, after cleaning the TFT substrate 14 on which the pixel electrode is formed, an organic film made of polyimide is applied as an alignment film material to the surface of the TFT substrate 14 facing the liquid crystal 1 by, for example, a printing method, After baking with a hot plate or the like, it is dried. Thereafter, an alignment process is performed on the TFT substrate 14 coated with the alignment film material to form the alignment film 11. Similarly, the alignment film 5 is formed on the color filter substrate 13 by washing, applying an organic film, and performing an alignment process.
  • a resin to be a sealing material 21 is applied to the surface of the TFT substrate 14 or the color filter substrate 13 on the side facing the liquid crystal 1.
  • the sealing material 21 may be an adhesive made of a thermosetting resin such as an epoxy adhesive or an ultraviolet curable resin.
  • the TFT substrate 14 and the color filter substrate 13 are arranged so that the surfaces facing the liquid crystal 1 face each other, and the pixels of the liquid crystal panel 15 formed on the TFT substrate 14 and the color filter substrate 13 correspond to each other.
  • the TFT substrate 14 and the color filter substrate 13 are fixed to each other by curing the sealing material 21 by heating or ultraviolet irradiation.
  • the bonded TFT substrate 14 and color filter substrate 13 are divided into individual cells corresponding to the individual liquid crystal panels 15, and the liquid crystal 1 is injected into the divided individual cells from the liquid crystal injection port in a vacuum. To do. Thereafter, for example, a photocurable resin is applied to the liquid crystal injection port, and light is irradiated to cure the photocurable resin, thereby sealing the liquid crystal injection port.
  • a photocurable resin is applied to the liquid crystal injection port, and light is irradiated to cure the photocurable resin, thereby sealing the liquid crystal injection port.
  • the polarizing plate 9 and the polarizing plate 3 are attached to the outside of the glass substrate 8 constituting the TFT substrate 14 and the glass substrate 2 constituting the color filter substrate.
  • the liquid crystal panel 15 is manufactured through the above steps.
  • the backlight 16 is disposed to face the outer surface of the liquid crystal panel 15 on the TFT substrate 14 side, that is, the back surface of the liquid crystal panel 15.
  • the terminal 25 formed on the liquid crystal panel 15 and the control board 17 are connected by the FFC 26, the FFC 26 is bent in a U shape, and the control board 17 is disposed on the back surface of the backlight 16.
  • the backlight 16 and the control board 17 are electrically connected with a cable.
  • the liquid crystal panel 15, the backlight 16, and the control board 17 configured as described above are arranged in the housing, and the image display module 20 is completed.
  • the transparent protective plate 30 is formed by cutting out a plate material made of a highly transparent resin having a refractive index of about 1.5 or 1.5 or more, such as PMMA (polymethyl methacrylate resin) or polycarbonate resin. Can be manufactured. Alternatively, a resin such as PMMA may be molded by injection molding using a mold. After the transparent protective plate 30 is formed by machining or injection molding, the surface of the first side surface 32a and the second side surface 32b of the V-shaped groove 32 is subjected to mirror finishing. Further, after mirror finishing as necessary, a metal film is formed by vapor-depositing a metal such as aluminum on the surfaces of the first side surface 32a and the second side surface 32b of the V-shaped groove 32.
  • a metal film is formed by vapor-depositing a metal such as aluminum on the surfaces of the first side surface 32a and the second side surface 32b of the V-shaped groove 32.
  • the first image display module 20a, the second image display module 20b, and the transparent protective plate 30 are bonded together.
  • an adhesive 80 such as an adhesive sheet is attached to the first back surface 30b and the second back surface 30c of the transparent protective plate 30 using a roller device or the like.
  • the pressure-sensitive adhesive 80 is a material having a refractive index larger than that of air, and a material having a refractive index comparable to that of the transparent protective plate 30 is preferable. Since the adhesive 80 serves as a filling medium provided to prevent interface reflection between the liquid crystal panels 15 a and 15 b and the transparent protective plate 30, the refractive index of the adhesive 80 is approximately the same as that of the transparent protective plate 30. The loss due to interface reflection is reduced by setting the refractive index to a lower value.
  • the adhesive 80 may be another bonding material such as an adhesive in addition to the adhesive sheet.
  • the display area 22a of the first liquid crystal panel 15a is pasted on the first back surface 30b of the transparent protective plate 30.
  • the display area 22b of the second liquid crystal panel 15b is bonded to the second back surface 30c, and pressure is applied to the bonding portion between the transparent protective plate 30 and the image display module 20.
  • the display area 22a of the first liquid crystal panel 15a of the first image display module 20a and the first back surface 30b of the transparent protective plate 30 are bonded together, and the second liquid crystal panel of the second image display module 20b.
  • the display area 22b of 15b and the 2nd back surface 30c of the transparent protective plate 30 are bonded together.
  • the image display apparatus 100 is completed through the above steps.
  • an image signal that forms an integrated image by combining the image displayed by the first image display module 20a and the image displayed by the second image display module 20b is a first image.
  • the data is input to the first control board 17 of the display module 20a and the second control board 17 of the second image display module 20b.
  • the first image signal input to the first control board 17 and the second image signal input to the second control board 17 are image processing apparatuses (not shown) provided outside the image display apparatus 100. ) May generate two image signals from one image signal and input them to the image display device 100.
  • the image display device 100 generates a first image signal and a second image signal, May be input to the first control board 17 and the second control board 17.
  • the control board 17 When an image signal is input to the control board 17, the control board 17 generates a drive signal for driving the first and second liquid crystal panels 15a and 15b.
  • a driving signal is input from the control substrate 17 to the liquid crystal panels 15a and 15b, the driving voltage is applied to the pixel electrode formed on the TFT substrate 14 and the counter electrode 4 formed on the color filter substrate 13, and the driving voltage is set.
  • the alignment state of the liquid crystal molecules of the liquid crystal 1 disposed between the electrodes changes.
  • the birefringence of the liquid crystal 1 is adjusted by the magnitude of the voltage between the pixel electrode and the counter electrode 4, and the liquid crystal 1, the polarizing plate 9 provided on the TFT substrate 14, and the polarizing plate 3 provided on the color filter substrate 13.
  • the transmittance of the light transmitted through each pixel is controlled by the combination.
  • the light emitted from the backlight 16 is transmitted to the viewing side or blocked through the TFT substrate 14, the liquid crystal 1, and the color filter substrate 13.
  • the light that passes through each pixel is selected by the color filter color material 6 provided on the color filter substrate 13, and light having a wavelength of red, green, or blue is selected and transmitted to the observation side.
  • color images are displayed on the display surfaces of the first and second image display modules 20a and 20b.
  • the light transmitted through the pixels of the liquid crystal panels 15a and 15b and emitted to the display surfaces of the image display modules 20a and 20b is transmitted from the first back surface 30b or the second back surface 30c of the transparent protection plate 30 to the transparent protection plate 30.
  • the transparent protective plate 30 is on the boundary between the display areas 22a and 22b and the non-display areas 24a and 24b of the first liquid crystal panel 15a and the second liquid crystal panel 15b. Since it is thickest at the position and thinnest at the positions of the end faces 30e at both ends of the transparent protective plate 30, the observer who has observed the screen of the image display device 100 is curved to the screen of the image display device 100. An image can be visually recognized.
  • the front surface 30a of the transparent protective plate 30 is a smooth curved surface, the observer can visually recognize the smoothly curved image on the front surface 30a of the transparent protective plate 30 which is the screen of the image display device 100. .
  • An operation principle that allows a curved image to be visually recognized using the first and second image display modules 20a and 20b having the planar display areas 22a and 22b will be described below.
  • FIG. 5 is a partial perspective view of the transparent protective plate for explaining the principle of operation of the image display apparatus according to Embodiment 1 of the present invention.
  • FIG. 5 shows the first liquid crystal panel when the observer 99 views the transparent protective plate 30 in the area surrounded by the broken line 34 of the image display device 100 shown in FIG. 1 from the position where the screen is shifted from the front to the right. It is a figure which shows the mode of the light ray radiate
  • the first back surface 30b of the transparent protective plate 30 and the display area 22a of the first liquid crystal panel 15a are in close contact with each other, and the adhesive 80 is negligibly thin. It is said.
  • the refractive index of the pressure-sensitive adhesive 80 is almost the same as that of the transparent protective plate 30. Therefore, in FIG. You may think. Accordingly, the first back surface 30b of the transparent protective plate 30 and the display area 22a of the first liquid crystal panel 15a are located in the same plane.
  • a broken line 22c indicates the left end of the display area 22a of the first liquid crystal panel 15a.
  • a broken line 22d indicates a virtual image of the left end of the display area 22a of the first liquid crystal panel 15a, and the observer 99 recognizes this as the left end of the display area 22a of the first liquid crystal panel 15a.
  • the cross sections 31a, 31b, and 31c shown in FIG. 5 show the cross sections of the transparent protective plate 30 in the region indicated by the broken line 34 in FIG.
  • FIG. 5 is a plane including an observer 99 that is shifted to the right side from the front of the transparent protective plate 30 and a left end portion of the display area 22a of the first liquid crystal panel 15a that the observer 99 is observing.
  • the cross section of the transparent protective plate 30 is shown.
  • the cross section 31 a is the central portion side of the transparent protective plate 30 closest to the V-shaped groove portion 32
  • the cross section 31 c is the end portion side closest to the end face 30 e of the transparent protective plate 30. Accordingly, a cross section 31a, a cross section 31b, and a cross section 31c are formed in order from the thicker cross section.
  • the light beam L1 emitted from the left end of the actual display area 22a is refracted when entering from the first back surface 30b of the transparent protective plate 30, and is transparent in the refraction angle direction when entering the first back surface 30b.
  • the light travels straight in the plane of the cross section 31 a of the protection plate 30, is refracted in the direction of the observer 99 on the front surface 30 a of the transparent protection plate 30, and is emitted from the front surface 30 a and is visually recognized by the observer 99.
  • the observer 99 recognizes that the light emitted from the left end portion of the display region 22a is emitted through a straight path indicated by the light ray L2 indicated by a broken line. As a result, the observer 99 sees a virtual image of the left end portion of the display area 22a in front of the left end portion of the display area 22a in the thickness direction of the transparent protective plate 30. Similarly, at the positions of the cross section 31b and the cross section 31c, the observer 99 sees the virtual image of the left end portion of the display area 22a in front of the left end portion of the actual display area 22a in the thickness direction of the transparent protective plate 30. It will be.
  • the virtual image of the left end portion of the display area 22a at the position of the cross-section 31a corresponds to the display area 22a at the position of the cross-section 31b. It appears more prominent on the observation side than the virtual image at the left end.
  • the virtual image at the left end portion of the display area 22a at the position of the cross section 31b appears to protrude more to the observation side than the virtual image at the end portion of the display area 22a at the position of the cross section 31c.
  • the left end portion indicated by the broken line 22c of the linear display region 22a looks like a virtual image indicated by the broken line 22d.
  • the virtual image at the left end portion of the display area 22a indicated by the broken line 22d becomes a smooth curve.
  • the planar image displayed in the display area 22a of the liquid crystal panel 15a is recognized as a curved image. That is, it is possible to obtain an image display device 100 that can display a curved image using a planar image display module.
  • the transparent protective plate 30 disposed on the observation side of the display surface of the two planar liquid crystal panels 15a and 15b is uniform. It is necessary to be formed with an appropriate refractive index. Light emitted from the display areas 22a and 22b of the liquid crystal panels 15a and 15b at various emission angles is incident on the first back surface 30b and the second back surface 30c of the transparent protective plate 30 at various incident angles. The light travels straight in the direction of the refraction angle corresponding to the incident angle, and is refracted when it exits from the front surface 30a of the transparent protective plate 30.
  • the degree of refraction when exiting from the front surface 30a of the transparent protective plate 30 differs depending on the exit location because the front surface 30a is a curved surface. Since the transparent protective plate 30 is formed with a uniform refractive index so that the light incident from the first back surface 30b and the second back surface 30c travels straight in the direction of the refraction angle, the observer views the viewpoint. Even when it is changed, light that goes straight through the inside of the transparent protective plate 30 enters the first back surface 30b and the second back surface 30c in different refraction angle directions after entering the first back surface 30b and the second back surface 30c. Can continuously observe curved images.
  • a light guide element configured by bundling a plurality of light guide paths as described in Patent Document 1
  • light emitted from the display region propagates only in the propagation direction of the light guide path, Since the light is emitted in the propagation direction of the light guide, the observer can view the light emitted from the light guide element only from the propagation direction of the light guide, and continuously and smoothly curved image display as in the present invention. Is difficult to do. That is, a light guide such as an optical fiber is configured by covering a core for propagating light with a clad having a refractive index smaller than that of the core.
  • FIG. 6 is a partial cross-sectional view showing the path of a light beam when the image display apparatus according to Embodiment 1 of the present invention is observed. 6 is a cross-sectional view taken along the section AA in FIG. 1, similar to the partial cross-sectional view of the image display device 100 shown in FIG. 4, and shows the observer 99 and the path of the light beam visually recognized by the observer 99. It is a thing.
  • a light ray L ⁇ b> 3 is a light path when the observer 99 looks at the position of the point A on the front surface 30 a of the transparent protective plate 30 that is the screen of the image display device 100. Is a path of light rays when the position of the point B on the front surface 30a of the transparent protective plate 30 which is the screen of the image display device 100 is seen.
  • the light ray L5 is an actual light ray path when the observer 99 sees the position between the point A and the point B on the front surface 30a of the transparent protective plate 30 which is the screen of the image display device 100.
  • L6 is a path of the light beam of the virtual image when the observer 99 looks at the position between the point A and the point B on the front surface 30a of the transparent protective plate 30 as in the case of the light beam L5.
  • the light beam L5 and the light beam L6 have the same path from the second side surface 32b of the V-shaped groove 32 to the eyes of the observer 99.
  • the position of the point A is the most central position of the transparent protective plate 30 where the observer 99 can directly see the display area 22a of the first liquid crystal panel 15a
  • the position of the point B is the observation position. This is the most central position of the transparent protective plate 30 where the person 99 can directly view the display area 22b of the second liquid crystal panel 15b. That is, the most downward viewpoint from which the observer 99 can directly view the display region 22a of the first liquid crystal panel 15a is the point A, and the most viewable point of view is that the viewer 99 can directly view the display region 22b of the second liquid crystal panel 15b.
  • the upward viewpoint is point B.
  • the observer 99 is observing the screen of the image display apparatus 100 from below the bisector of the angle formed by the display areas 22a and 22b of the two liquid crystal panels 15a and 15b. Show. This indicates that the position of the point A is a position where the end of the display area 22a in contact with the non-display area 24a of the first liquid crystal panel 15a can be visually recognized. That is, the position indicated by the tip of the arrow of the light beam L3 is an end of the display area 22a of the first liquid crystal panel 15a and a boundary with the non-display area 24a.
  • FIG. 6 the observer 99 is observing the screen of the image display apparatus 100 from below the bisector of the angle formed by the display areas 22a and 22b of the two liquid crystal panels 15a and 15b. Show. This indicates that the position of the point A is a position where the end of the display area 22a in contact with the non-display area 24a of the first liquid crystal panel 15a can be visually recognized. That is, the position indicated by the tip of the
  • the direction of the arrow of each ray is matched to the direction of the line of sight of the observer 99, but the light emitted from the display areas 22 a and 22 b of the liquid crystal panels 15 a and 15 b of the image display device 100 is shown in FIG. It enters into the eyes of the observer 99 through a path opposite to the arrow of the ray shown in FIG. Further, the light emitted from the display areas 22a and 22b of the liquid crystal panels 15a and 15b is refracted to a refraction angle corresponding to the incident angle when entering the first back surface 30b and the second back surface 30c of the transparent protective plate 30. However, since the path from the display areas 22a and 22b to the first back surface 30b and the second back surface 30c is very short, it is omitted.
  • the first side surface 32 a and the second side surface 32 b of the V-shaped groove portion 32 provided on the transparent protective plate 30 have back surfaces as reflection surfaces, and light propagating through the transparent protective plate 30 is first.
  • the first side surface 32a and the second side surface 32b of the V-shaped groove 32 are the first side surface 32a when the observer 99 views the first side surface 32a or the second side surface 32b from the design observation position.
  • the angle formed between the normal line of the side surface 32a or the normal line of the second side surface 32b and the observer 99 is designed to be the total reflection angle.
  • the light emitted from the display area 22a of the first liquid crystal panel 15a and incident on the first side face 32a is totally reflected by the first side face 32a, and is emitted from the display area 22b of the second liquid crystal panel 15b to be second.
  • the light incident on the side surface 32b is totally reflected by the second side surface 32b and enters the eyes of the observer 99. Even when the angle formed by the normal of the first side surface 32a or the normal of the second side surface 32b and the observer 99 is not a total reflection angle, the back surface and the second side surface of the first side surface 32a.
  • the back surface of 32b is a reflecting surface, the light reflected by the back surface of the first side surface 32a or the back surface of the second side surface 32b is incident on the eyes of the observer 99. If necessary, a metal film may be formed on the surface of the first side surface 32a and the surface of the second side surface 32b to improve the reflectance of the back surface.
  • the light beam L3 when the observer 99 looks at the position of the point A on the front surface 30a of the transparent protective plate 30 will be described.
  • the observer 99 moves from the position of the point A on the front surface 30a of the transparent protective plate 30 to the upper left side of the drawing with the viewpoint facing upward, that is, up to the end of the first liquid crystal panel 15a opposite to the non-display area 24a.
  • the path is the same as that of the light beam L3 described here.
  • the viewer 99 since the viewer 99 directly views the image displayed on the display area 22a of the first liquid crystal panel 15a, the viewer 99 is a transparent screen that is the screen of the image display device 100 as described with reference to FIG.
  • the curved image displayed on the front surface 30a of the protection plate 30 is visually recognized.
  • the light ray L4 when the observer 99 looks at the position of the point B on the front surface 30a of the transparent protective plate 30 will be described.
  • the observer 99 looks from the position of the point B on the front surface 30a of the transparent protective plate 30 downward to the right side of the page, that is, to the end of the second liquid crystal panel 15b opposite to the non-display area 24b.
  • the path is the same as that of the light beam L4 described here.
  • the observer 99 since the observer 99 directly views the image displayed on the display area 22b of the second liquid crystal panel 15b, the observer 99 is a transparent screen that is the screen of the image display device 100 as described with reference to FIG.
  • the curved image displayed on the front surface 30a of the protection plate 30 is visually recognized.
  • the position between the point A and the point B is reflected by the observer 99 on either the first side surface 32 a or the second side surface 32 b of the V-shaped groove portion 32 provided on the transparent protective plate 30.
  • This is a position for viewing a virtual image of the display area 22a of the liquid crystal panel 15a or the display area 22b of the second liquid crystal panel 15b by the reflected light.
  • This virtual image is a partial area of the first display area 22a or the second display area 22b projected on the observation side surface, which is the back surface of the first side surface 32a or the second side surface 32b of the V-shaped groove 32. It is a mirror image.
  • the position of the point A is a position at which the end of the display area 22a at the boundary with the non-display area 24a of the first liquid crystal panel 15a can be directly seen, as described above.
  • the observer 99 sees the non-display area 24a of the first liquid crystal panel 15a as indicated by the light beam L6.
  • the second side surface 32b of the V-shaped groove 32 is present on the line of sight of the observer 99 and the back surface of the second side surface 32b is a reflecting surface, the light beam L5 is reflected on the second side surface.
  • the light beam L5 incident on the inside of the transparent protective plate 30 from the second back surface 30c of the transparent protective plate 30 is reflected only once by the second side surface 32b of the V-shaped groove 32 and is emitted from the front surface 30a.
  • the light emitted from the display region 22b of the second liquid crystal panel 15b and totally reflected by the back surface of the second side surface 32b is incident on the eyes of the observer 99.
  • the observer 99 recognizes the light viewed through the path of the light beam L5 as the light viewed through the path of the light beam L6, so that the observer 99 is positioned at the position of the non-display area 24a of the first liquid crystal panel 15a. Recognize that the image is displayed. Therefore, even when the observer 99 gradually lowers the viewpoint from the upper side of the point A and moves the viewpoint between the points A and B beyond the position of the point A, the observer 99 continues.
  • the image can be recognized and visually recognized as one continuous screen.
  • the position of the point B is the position of the viewpoint where the observer 99 visually recognizes the end of the display area 22b closest to the non-display area 24b of the second liquid crystal panel 15b.
  • the observer 99 moves the viewpoint upward from the position of the point B, the observer 99 is emitted from the display region 22b of the second liquid crystal panel 15b and totally reflected by the second side surface 32b of the V-shaped groove 32.
  • the displayed image is visually recognized. Accordingly, even when the observer 99 gradually raises the viewpoint from below the point B and moves the viewpoint between the points A and B beyond the position of the point B, the observer 99 Images can be recognized continuously and viewed as one continuous screen.
  • the end portions of the two liquid crystal panels 15a and 15b having the non-display areas 24a and 24b are arranged adjacent to each other, but the two liquid crystal panels 15a are disposed. Since the transparent protective plate 30 provided with the V-shaped groove portion 32 is arranged on the observation side of 15b, the observer 99 has an end face 30e of the front surface 30a of the transparent protective plate 30 which is the screen of the image display device 100. The image can be continuously observed from one end provided with the other end to the other end, and is visually recognized as one continuous screen.
  • the direction in which the image displayed on the display area 22a of the first liquid crystal panel 15a is reflected by the first side surface 32a of the V-shaped groove 32 and the first back surface 30b of the transparent protective plate 30 are: Since it is configured to intersect outside the display area 22a of the first liquid crystal panel 15a, the observer 99 is positioned in the direction in which the image displayed on the display area 22a of the first liquid crystal panel 15a is reflected. A virtual image can be visually recognized outside the display area 22a of the first liquid crystal panel 15a.
  • the direction in which the image displayed on the display area 22b of the second liquid crystal panel 15b is reflected by the second side surface 32b of the V-shaped groove 32 and the second back surface 30c of the transparent protective plate 30 are as follows.
  • the observer 99 Since it is configured to intersect outside the display area 22b of the second liquid crystal panel 15b, the observer 99 is positioned in a direction in which the image displayed on the display area 22b of the second liquid crystal panel 15b is reflected. A virtual image can be visually recognized outside the display area 22b of the second liquid crystal panel 15b. As a result, even if each of the liquid crystal panels 15a and 15b has the non-display areas 24a and 24b outside the display area, the observer 99 can visually recognize a virtual image at the position of the non-display areas 24a and 24b. .
  • the image displayed on the liquid crystal panels 15a and 15b at the positions facing the opening of the V-shaped groove 32, that is, the first side surface 32a and the second side surface 32b, is shown to the observer 99. Since it is not visually recognized, both ends of the opening of the V-shaped groove 32, that is, the connection between the first back surface 30 b of the transparent protective plate 30 and the first side surface 32 a of the V-shaped groove 32 and the transparent protective plate 30.
  • the connection portions between the second back surface 30c and the second side surface 32b of the V-shaped groove 32 are the display areas 22a and 22b and the non-display areas 24a and 24b of the first and second liquid crystal panels 15a and 15b, respectively. It is preferable to lie on the boundary. Thereby, the display areas 22a and 22b of the first and second liquid crystal panels 15a and 15b can be utilized most efficiently.
  • one or both of the both ends of the opening of the V-shaped groove 32 are formed on the display regions 22a and 22b rather than on the boundary between the display regions 22a and 22b and the non-display regions 24a and 24b of the liquid crystal panels 15a and 15b. Even if it is provided at the center side, that is, at a position facing the display area 22a or the display area 22b, the image can be continuously observed. However, when one or both of the both ends of the opening of the V-shaped groove 32 is provided at a position facing the non-display area of the first or second liquid crystal panel, the observer 99 This is not preferable because a non-display area where no image is displayed is viewed.
  • FIG. 7 is a partial cross-sectional view showing the path of a light beam when a conventional image display device is observed.
  • FIG. 8 is a perspective view showing a state in which an image is displayed by the conventional image display device shown in FIG. 7 and 8 differs from the image display device 100 of the present invention shown in FIGS. 1 and 6 in that the transparent protective plate is not provided with a V-shaped groove. . 7 and 8, the same reference numerals as those in FIGS. 1 and 6 indicate the same configuration.
  • the line of sight of the observer 99 is the non-display area 24a of the first liquid crystal panel 15a or the first display.
  • the dark line 71 is observed at the center of the front surface 70a of the transparent protective plate 70 which becomes the screen of the image display device 500, and the display quality is deteriorated. Further, as described with reference to FIG. 5, the virtual image line at the left end or the right end of the display area 22 of the liquid crystal panel 15 is also divided, so that the screen of the image display device 500 is visually recognized as having a curved shape as a whole. It becomes difficult.
  • the image display device 100 of the present invention is provided with the V-shaped groove portion 32 on the back side of the transparent protective plate 30, and the first side surface 32 a and the second side surface 32 b of the V-shaped groove portion 32.
  • the back surface is a reflective surface
  • the V-shaped groove 32 is opposed to a region including the abutting portion between the end portion of the first liquid crystal panel 15a and the end portion of the second liquid crystal panel 15b and the respective non-display regions 24. Since the configuration is adopted, the observer 99 can observe images continuously on the front surface 30a of the transparent protective plate 30 which is the screen of the image display device 100, and the conventional image display device shown in FIGS.
  • the image is not divided by the dark line 71 as in 500, and is visually recognized as one continuous screen.
  • the image observed between the point A and the point B in FIG. 6 is reflected once by the first side surface 32a or the second side surface 32b of the V-shaped groove 32, and the front surface of the transparent protective plate 30. Since the image is based on the light emitted from 30 a, the image is reversed along the bending direction of the transparent protective plate 30. That is, it is a mirror image of the image displayed in the display area. For this reason, the image displayed in the vicinity of the center of the image display apparatus 100, that is, between the point A and the point B and the peripheral part thereof, is an image that does not change in the bending direction of the transparent protective plate 30 or is inverted. However, it is preferable to display an image that is not problematic for the observer.
  • a uniform image in which a single color such as white or red is displayed on the entire display area 22, a line or stripe pattern extending along the bending direction, a pattern image such as a polka dot pattern spreading in a random arrangement, etc. is preferred.
  • the image display device 100 includes the two liquid crystal panels 15a and 15b and the first liquid crystal panels 15a and 15b bonded to each other by the adhesive 80 so as to face the display areas 22a and 22b.
  • a first back surface 30b and a second back surface 30c, a V-shaped groove portion 32 is provided between the first back surface 30b and the second back surface 30c, and a first side surface of the V-shaped groove portion 32 is provided.
  • the transparent protective plate 30 is bonded to the display surface of the image display module 20 in which the liquid crystal panel 15 and the backlight 16 are housed in the housing.
  • the liquid crystal panel 15 and the backlight 16 Even if the liquid crystal panel 15 is directly attached to the transparent protective plate 30 and the backlight 16 is installed using a predetermined support material after the liquid crystal panel 15 is attached to the transparent protective plate 30. Good.
  • FIG. 9 is a partial cross-sectional view showing an image display device according to Embodiment 2 of the present invention.
  • the partial cross-sectional view of FIG. 9 corresponds to the cross-sectional view taken along the section AA of FIG. 9, the same reference numerals as those in FIG. 4 denote the same or corresponding components, and the description thereof is omitted.
  • vertical to the longitudinal direction of the V-shaped groove part 42 provided in the transparent protective board 40 differs from Embodiment 1 of this invention.
  • the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove portion 42 of the image display device 200 is such that the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b. It exhibits a line-symmetric shape with the bisector of the angle formed as the axis of symmetry.
  • the first side surface 42a and the second side surface 42b of the V-shaped groove portion 42 provided between the first back surface 40b and the second back surface 40c of the transparent protective plate 40 are:
  • the intersection angle between the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b is substantially a right angle.
  • substantially perpendicular means that 90 ° is the best, and it takes into account manufacturing errors when manufacturing the transparent protective plate 40 and manufacturing errors when bonding the transparent protective plate 40 and the liquid crystal panels 15a and 15b. If it is 88 degrees or more and 92 degrees or less.
  • the crossing angle with the back surface 40b of 1 is also substantially a right angle, and is generally 88 ° or more and 92 ° or less.
  • the second back surface 40c of the transparent protective plate 40 and the display area 22b of the second liquid crystal panel 15b are arranged to face each other in parallel, the second side surface 42b of the V-shaped groove 42 and the transparent protective plate
  • the crossing angle of the 40 with the second back surface 40c is also substantially a right angle, and is approximately 88 ° to 92 °.
  • the first side surface 42a of the V-shaped groove portion 42 provided on the transparent protective plate 40 intersects the display area 22a of the first liquid crystal panel 15a at a right angle, and the second side surface 42b By intersecting the display area 22b of the second liquid crystal panel 15b at a right angle, a virtual image visually recognized on the display area 22a of the first liquid crystal panel 15a and the first side face 42a of the V-shaped groove 42, or the first The display area 22b of the second liquid crystal panel 15b and the virtual image visually recognized on the second side surface 42b of the V-shaped groove 42 are recognized by the observer so as to be on the same plane, so that the viewer feels uncomfortable. Can be reduced.
  • the observer not only when the observer observes the front surface 40a of the transparent protective plate 40, which is the screen of the image display device 200, from the front direction of the image display device 200, that is, the direction parallel to the yz plane of FIG. Even when observed from an oblique direction, the observer is less likely to feel uncomfortable, and the images displayed on the display areas 22a and 22b of the liquid crystal panels 15a and 15b and the first side surface 42a of the V-shaped groove 42 are displayed. In addition, it is possible for the observer to visually recognize the image as a continuous image without causing distortion in the image that is reflected by the second side surface 42b and visually recognized.
  • FIG. 10 is a partial cross-sectional view showing an image display device according to Embodiment 3 of the present invention.
  • the partial cross-sectional view of FIG. 10 corresponds to the cross-sectional view taken along the section line AA of FIG. 1, similarly to FIG. 10, the same reference numerals as those in FIG. 4 denote the same or corresponding components, and the description thereof is omitted.
  • vertical to the longitudinal direction of the V-shaped groove part 52 provided in the transparent protective board 50 differs from Embodiment 1 of this invention.
  • the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove 52 of the image display device 300 is such that the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b. It exhibits a line-symmetric shape with the bisector of the angle formed as the axis of symmetry.
  • circles indicated by broken lines 97a and 97b have centers on the surfaces of the display areas 22a and 22b of the liquid crystal panels 15a and 15b, and the display areas 22a and non-display areas 24a of the first liquid crystal panel 15a. And a circle passing through the boundary between the display area 22b and the non-display area 24b of the second liquid crystal panel 15b.
  • the broken line 97a and the broken line 97b are circles, but they may be elliptical, and have a center at a location away from the surfaces of the display areas 22a and 22b of the first and second liquid crystal panels 15a and 15b. You may do it.
  • the circle indicated by the broken line 97a and the circle indicated by the broken line 97b are bisectors of angles formed by the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b. It intersects on the alternate long and short dash line BB, and the intersection angle is 5 ° or less, more preferably 2 ° or less.
  • the first side surface 52 a and the second side surface 52 b of the V-shaped groove portion 52 provided between the first back surface 50 b and the second back surface 50 c of the transparent protective plate 50 are the V-shaped groove portion 52.
  • a cross section perpendicular to the longitudinal direction is formed so as to coincide with an arc constituting a part of broken lines 97a and 97b. That is, the 1st side surface 52a and the 2nd side surface 52b of the V-shaped groove part 52 are curved surfaces which consist of a part of side surface of a cylinder.
  • the first side surface 52 a and the second side surface 52 b of the V-shaped groove portion 52 provided in the transparent protective plate 50 are convex with respect to the inner side of the V-shaped groove portion 52.
  • the display region 22a of the first liquid crystal panel 15a or the second liquid crystal panel The continuity of the image is not impaired when the display area 22b of 15b is viewed, and the viewer can visually recognize the image as smoothly continuing.
  • the first side surface 52a and the second side surface 52b of the V-shaped groove portion 52 to intersect at an angle of 5 ° or less, the continuity of images visually recognized by the observer can be further enhanced.
  • FIG. 11 is a partial cross-sectional view showing an image display apparatus according to Embodiment 4 of the present invention.
  • the partial cross-sectional view of FIG. 11 corresponds to the cross-sectional view taken along line AA of FIG.
  • the same reference numerals as those in FIG. 4 denote the same or corresponding components, and the description thereof is omitted.
  • the first, second, and third embodiments of the present invention are different in the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove 62 provided in the transparent protective plate 60.
  • FIG. 11 is a partial cross-sectional view showing an image display apparatus according to Embodiment 4 of the present invention.
  • the partial cross-sectional view of FIG. 11 corresponds to the cross-sectional view taken along line AA of FIG.
  • the same reference numerals as those in FIG. 4 denote the same or corresponding components, and the description thereof is omitted.
  • the first, second, and third embodiments of the present invention are different in the cross-section
  • the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove 62 of the image display device 400 is such that the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b. It exhibits a line-symmetric shape with the bisector of the angle formed as the axis of symmetry.
  • the V-shaped groove 62 provided in the transparent protective plate 60 includes a first side surface 62a connected to an end of the first back surface 60b of the transparent protective plate 60 and a second back surface 60c of the transparent protective plate 60. And a second side surface 62b connected to the end of the second side 62b.
  • the first side surface 62a of the V-shaped groove portion 62 includes a first flat surface portion 63a having one end connected to the end portion of the first back surface 60b and a first flat surface portion 63a connected to the other end of the first flat surface portion 63a.
  • the second side surface 62b of the V-shaped groove portion 62 includes a second flat surface portion 63b having one end connected to an end portion of the second back surface 60c, and a second flat surface.
  • the second curved surface portion 64b is connected to the other end of the portion 63b.
  • the cross-sectional shape of the V-shaped groove 62 is a line-symmetric shape with the one-dot chain line BB as an axis of symmetry, so the first side surface 62a and the second side surface 62b Has the same configuration.
  • the second side surface 62b of the V-shaped groove 62 will be described in detail, but the first side surface 62a has the same configuration as the second side surface 62b.
  • the second flat surface portion 63b constituting the second side surface 62b of the V-shaped groove portion 62 is provided so that an angle formed with the display region 22b of the second liquid crystal panel 15b is substantially a right angle.
  • the term “substantially perpendicular” is as described in the second embodiment.
  • the width of the second flat surface portion 63 b of the second side surface 62 b of the V-shaped groove 62 is, for example, 6 mm.
  • the second curved surface portion 64b is connected to the second flat surface portion 63b of the second side surface 62b of the V-shaped groove portion 62.
  • the shape of the second curved surface portion 64b in the cross section perpendicular to the longitudinal direction of the V-shaped groove portion 62 is an arc that is a part of a circle indicated by a broken line 98b.
  • a circle indicated by a broken line 98b is a circle having a center at a distance of 6 mm from the second back surface 60c of the transparent protective plate 60 and passing through a connection portion between the second flat surface portion 63b and the second curved surface portion 64b.
  • the second flat surface portion 63b and the second curved surface portion 64b are connected at an angle of 0 °, and the second side surface 62b is continuously smooth.
  • the broken line 98b is a circle having a radius of 30 mm, for example, but the radius is not limited to this, and the broken line 98b may be an ellipse instead of a circle.
  • the second curved surface portion 64 b may be a curved surface that is convex with respect to the inside of the V-shaped groove portion 62.
  • the first side surface 62a of the V-shaped groove 62 connected to the end of the first back surface 60b of the transparent protective plate 60 has a cross section perpendicular to the longitudinal direction of the V-shaped groove 62. Since the shape exhibits an axisymmetric shape, the shape is similar to that of the second side surface 62b of the V-shaped groove 62. That is, the first side surface 62a of the V-shaped groove portion 62 is connected to the first flat surface portion 63a having a width of 6 mm, for example, and the first flat surface portion 63a at an angle of 0 °, for example, having a curvature radius of 30 mm. And a first curved surface portion 64a. As described in Embodiment 3, the first curved surface portion 64a and the second curved surface portion 64b are connected to each other at an intersection angle of 5 ° or less, preferably at an intersection angle of 2 ° or less.
  • the first side surface 62 a and the second side surface 62 b of the V-shaped groove portion 62 provided on the transparent protective plate 60 have the first side surface 62 a.
  • the transparent protective plate 60 is produced. Can be made easier.
  • the boundary between the flat surface portion and the curved surface portion is that the side surface of the V-shaped groove portion does not have a flat surface portion but is composed only of the curved surface portion.
  • the image is not distorted, and a smooth continuous image is visually recognized.
  • the side surface of the V-shaped groove is composed of only a curved surface, and the intersection angle between the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b is substantially equal.
  • the shape provided so that it may become right-angled is preferable.
  • the cross-sectional shapes of the first curved surface portion 64a of the first side surface 62a of the V-shaped groove portion 62 and the second curved surface portion 64b of the second side surface 62b have a curvature radius of 30 mm.
  • the present invention is not limited to this, and the shape may be a parabola or hyperbola whose curvature is not constant.
  • FIG. 12 is a simulation result showing the luminance distribution of the screens of the image display device of the present invention and the conventional image display device. 12 shows the image display device 200 of the second embodiment shown in FIG. 9, the image display device 300 of the third embodiment shown in FIG. 10, the image display device 400 of the fourth embodiment shown in FIG. In the conventional image display device 500 shown in FIG. 7, a uniform white image is displayed on each screen, and the luminance distribution on the front surface of each transparent protective plate is obtained by simulation.
  • the configuration is the same except for the presence or absence of the V-shaped groove provided on the transparent protective plate and the shape of the V-shaped groove.
  • FIG. 12A shows the case where the position along the line AA in FIG. 1 is observed from the bisector of the angle formed by the two liquid crystal panels 15a and 15b in the cut plane AA in FIG. Luminance distribution.
  • FIG. 12B shows a line AA in FIG. 1 from a position inclined 30 ° downward from the bisector of the angle formed by the two liquid crystal panels 15a and 15b in the cut plane AA in FIG. It is a luminance distribution when the position along is observed.
  • the horizontal axis indicates the distance from the center of the front surface of the transparent protective plate, the positive side being the first liquid crystal panel 15a side, and the negative side being the second liquid crystal panel 15b side. is there.
  • FIG. 12 (a) when the image display device is observed from the front direction, in the structure of the conventional image display device, the luminance is greatly reduced over about 20 mm in the vicinity of the central portion of the front surface of the transparent protective plate. Thus, it can be seen that dark lines are observed at the boundary between the two image display modules as shown in FIG.
  • the image display devices described in Embodiments 2 to 4 of the present invention shown in FIGS. 9, 10, and 11 the luminance distribution is almost uniform, and the screen of the image display device is transparent. It can be seen that images are continuously displayed over the entire front surface of the protective plate.
  • FIG. 12 (b) when the image display device is observed from a direction slightly below the front, the second to fourth embodiments of the present invention shown in FIGS. 9, 10, and 11 are used. Even in the image display apparatus described, a decrease in luminance is observed in the vicinity of the central portion of the front surface of the transparent protective plate, but it can be seen that the magnitude of the decrease in luminance is smaller than that of the conventional image display apparatus.
  • the image display device is provided with the V-shaped groove portion having the reflecting surface of the back surface on the side surface between the first back surface and the second back surface of the transparent protective plate. Since the non-display area and the butted end of the two image display modules are arranged facing the groove, the luminance reduction at the center of the screen is suppressed when viewed from the front, and the image is viewed from an oblique direction from the front. Even in this case, the reduction in luminance can be reduced, so that the display quality can be improved.
  • FIG. 13 is a partial cross-sectional view showing an image display apparatus according to Embodiment 5 of the present invention.
  • the partial cross-sectional view of FIG. 13 corresponds to the cross-sectional view taken along the section AA of FIG.
  • the same reference numerals as those in FIG. 9 of the second embodiment denote the same or corresponding components, and the description thereof is omitted.
  • the transparent protective plate 47 is configured by joining a first partial transparent protective plate (first transparent protective plate) 45 and a second partial transparent protective plate (second transparent protective plate) 46. The difference is.
  • first transparent protective plate first transparent protective plate
  • second transparent protective plate second transparent protective plate
  • the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove 42 of the image display device 250 is such that the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b. It exhibits a line-symmetric shape with the bisector of the angle formed as the axis of symmetry.
  • an alternate long and short dash line BB is an angle bisector formed by the first liquid crystal panel 15a and the second liquid crystal panel 15b.
  • the transparent protective plate 47 includes a first partially transparent protective plate 45 having a first back surface 47b disposed to face the display region 22a of the first liquid crystal panel 15a, and a second A second partial transparent protective plate 46 having a second back surface 47c disposed to face the display region 22b of the liquid crystal panel 15b is joined at the end surface along the alternate long and short dash line BB.
  • the first partial transparent protective plate 45 and the second partial transparent protective plate 46 are necessarily joined along a bisector of an angle formed by the first liquid crystal panel 15a and the second liquid crystal panel 15b.
  • connection portion between the first side surface 42a and the second side surface 42b of the V-shaped groove 42 provided on the transparent protective plate 47 after being joined is not the first partial transparent protective plate. 45 and the second partially transparent protective plate 46 are preferably configured so as to be positioned at the joint portion. And the connection part of the 1st side surface 42a and the 2nd side surface 42b of the V-shaped groove part 42 provided in the transparent protective plate 47 after joining is the 1st liquid crystal panel 15a and the 2nd liquid crystal panel. More preferably, it is configured to lie on a bisector of an angle formed by 15b.
  • the first partial transparent protective plate 45 and the second partial transparent protective plate 46 are formed by injection molding or machining. As shown in FIG. 13, when the cross section of the transparent protective plate 47 has a line-symmetric shape with the dashed-dotted line BB as the axis of symmetry, that is, when the transparent protective plate 47 after joining exhibits a plane-symmetric shape. Since the same shape member can be used for the first partial transparent protective plate 45 and the second partial transparent protective plate 46, the manufacturing cost can be reduced.
  • the second side surface 42b provided on the partially transparent protective plate 46 is mirror-finished.
  • metals such as aluminum, may be vapor-deposited as needed and a metal film may be formed.
  • the first side surface 42 a of the first partial transparent protective plate 45 and the second side surface 42 b of the second partial transparent protective plate 46 constitute both side surfaces of the V-shaped groove 42.
  • the end face of the first partial transparent protective plate 45 and the end face of the second partial transparent protective plate 46 are joined with, for example, a solvent adhesive 90 for acrylic resin to form the transparent protective plate 47.
  • the solvent adhesive 90 has a refractive index similar to that of the first partial transparent protective plate 45 and the second partial transparent protective plate 46, and most of the light propagating inside the first partial transparent protective plate 45 The light travels straight through the interface without being reflected at the interface with the second partially transparent protective plate 46.
  • the transparent protective plate 47 having the same shape as the transparent protective plate described in the second embodiment can be manufactured. It should be noted that the first side face 42a formed on the first partial transparent protective plate 45 and the shape of the second side face 42b formed on the second partial transparent protective plate 46 are changed to change the first, third, and third embodiments. Alternatively, a transparent protective plate having the same shape as the transparent protective plate described in 4 can be produced.
  • the transparent protective plate 47 of the image display apparatus 250 is configured by joining the first partially transparent protective plate 45 and the second partially transparent protective plate 46 that are individually manufactured, thereby bending the transparent protective plate 47.
  • the transparent protective plate 47 of the image display device 250 having the above screen can be manufactured easily and with a high yield.
  • the first partial transparent protective plate 45 and the second partial transparent protective plate 46 have the same shape, and a transparent protective plate 47 that exhibits a plane-symmetric shape by joining both is manufactured. The manufacturing cost of 47 can be reduced.
  • FIG. 14 is a partial cross-sectional view showing an image display apparatus according to Embodiment 6 of the present invention.
  • the partial cross-sectional view of FIG. 14 corresponds to the cross-sectional view taken along line AA of FIG.
  • the same reference numerals as those in FIG. 10 of the third embodiment and FIG. 13 of the fifth embodiment denote the same or corresponding components, and the description thereof is omitted.
  • the transparent protective plate 57 is configured by joining a first partial transparent protective plate (first transparent protective plate) 55 and a second partial transparent protective plate (second transparent protective plate) 56 to FIG. 13 is different from FIG. 13 in that the cross-sectional shape of the V-shaped groove 52 and the shape of the joint between the first partial transparent protective plate 55 and the second partial transparent protective plate 56 are different. .
  • the first partially transparent protective plate 55 is provided with a recess recessed from the first side surface 52a at the other end of the first side surface 52a whose one end is connected to the first back surface 57b.
  • the second partially transparent protective plate 56 is provided with a convex portion protruding from the second side surface 52b at the other end of the second side surface 52b whose one end is connected to the second back surface 57c. Then, the convex portions of the second partial transparent protective plate 56 are fitted into the concave portions of the first partial transparent protective plate 55, and the concave portions of the first partial transparent protective plate 55 and the convex portions of the second partial transparent protective plate 56 are fitted.
  • a solvent adhesive 90 for acrylic resin is provided at the interface between the first partial transparent protective plate 55 and the second partial transparent protective plate 56. Thereby, the transparent protective plate 57 of the image display device 350 is formed.
  • the first partial transparent protective plate 55 is provided with a concave portion that is recessed from the first side surface 52a
  • the second partial transparent protective plate 56 is provided with a convex portion that protrudes from the second side surface 52b.
  • the distance from the deepest part of the V-shaped groove part 52 provided in the transparent protective plate 57, that is, the connection part between the first side surface 52a and the second side surface 52b, to the front surface 57a of the transparent protective plate 57 is short. Even if it is a case, since the area which provides the solvent adhesive 90 can be increased, the 1st partial transparent protective plate 55 and the 2nd partial transparent protective plate 56 can be joined firmly.
  • the transparent protective plate 57 having the same shape as the transparent protective plate described in the third embodiment can be manufactured.
  • the first and second embodiments 1 and 2 are modified by changing the shapes of the first side surface 52a formed on the first partial transparent protective plate 55 and the second side surface 52b formed on the second partial transparent protective plate 56.
  • a transparent protective plate having the same shape as the transparent protective plate described in 4 can be produced.
  • the transparent protective plate 57 of the image display device 350 is configured by joining the first partial transparent protective plate 55 and the second partial transparent protective plate 56 that are individually manufactured, thereby bending the transparent protective plate 57.
  • the transparent protective plate 57 of the image display device 350 having the above screen can be manufactured easily and with a high yield.
  • FIG. FIG. 15 is a partial cross-sectional view showing an image display apparatus according to Embodiment 7 of the present invention.
  • the partial cross-sectional view of FIG. 15 corresponds to the cross-sectional view taken along the section AA of FIG.
  • the same reference numerals as those in FIG. 11 of the fourth embodiment and FIG. 14 of the sixth embodiment denote the same or corresponding components, and the description thereof is omitted.
  • a transparent protective plate 67 is formed by joining a first partial transparent protective plate (first transparent protective plate) 65 and a second partial transparent protective plate (second transparent protective plate) 66.
  • a reinforcing member 68 joined to the first side face 62a and the second side face 62b is provided at the opening of the V-shaped groove 62 of the transparent protective plate 67.
  • the cross-sectional shape perpendicular to the longitudinal direction of the V-shaped groove 62 of the image display device 450 is such that the display area 22a of the first liquid crystal panel 15a and the display area 22b of the second liquid crystal panel 15b. It exhibits a line-symmetric shape with the bisector of the angle formed as the axis of symmetry.
  • the transparent protective plate 67 is provided on the first partial transparent protective plate 65, as in FIG. 14 of the sixth embodiment. It is provided on the partially transparent protective plate 66 and is configured by joining a convex portion protruding from the second side surface 62b. Thereby, the transparent protective plate 67 having the same shape as the transparent protective plate described in FIG. 11 of the fourth embodiment is formed. That is, the first side surface 62a of the V-shaped groove portion 62 provided on the transparent protective plate 67 includes the first flat surface portion 63a whose one end is connected to the first back surface 67b and the first flat surface portion 63a. The second side surface 62b is configured by a first curved surface portion 64a connected to the end, and the second side surface 62b is connected to the second back surface 67c. And a second curved surface portion 64b connected to the.
  • the first side surface 62a of the first partially transparent protective plate 65 is provided with a metal film formed by vapor deposition of a metal such as aluminum after being mirror-finished, and the back surface of the first side surface 62a is a reflective surface. It has become.
  • the second side surface 62b of the second partially transparent protective plate 66 is provided with a metal film formed by vapor deposition of a metal such as aluminum after being mirror-finished, and the back surface of the second side surface 62b. Is a reflective surface.
  • the metal film should just be provided in the 1st plane part 63a and the 2nd plane part 63b at least among the 1st side surface 62a and the 2nd side surface 62b.
  • the image display device 450 has a V-shaped groove 62 of a transparent protective plate 67 formed by joining a first partial transparent protective plate 65 and a second partial transparent protective plate 66. And a reinforcing member 68 joined to the first side face 62a and the second side face 62b of the V-shaped groove.
  • the reinforcing member 68 has a pentagonal prism shape with a cross-sectional shape.
  • the shape of the reinforcing member 68 is not limited to this, and the side surface joined to the first side surface 62 a and the second side surface 62 b.
  • the reinforcing member 68 is made of the same material as the transparent protective plate 67 such as PMMA or acrylic resin, and is formed by injection molding or machining.
  • the reinforcing member 68 is not necessarily formed of the same material as that of the transparent protective plate 67. However, if the reinforcing member 68 is formed of the same material as that of the transparent protective plate 67, the thermal expansion coefficient is the same as that of the transparent protective plate 67. Since the distortion of the transparent protective plate 67 can be reduced even when the environmental temperature change is large, it is preferable because higher-quality image display can be performed.
  • the reinforcing member 68 is formed on the first flat surface portion 63a of the first side surface 62a of the V-shaped groove portion 62 of the transparent protective plate 67 and the second flat surface portion 63b of the second side surface 62b, for example, for acrylic resin. Bonded with a solvent adhesive 91. Since the metal film is formed on the surface of the first side surface 62 a and the surface of the second side surface 62 b of the V-shaped groove portion 62, the reinforcing member 68 is bonded to the transparent protective plate 67 with the solvent adhesive 91. Even when the first side surface 62a and the second side surface 62b are joined to each other, the back surface of the first side surface 62a and the back surface of the second side surface 62b are maintained.
  • the transparent protective plate 67 is not only configured by joining the first partial transparent protective plate 65 and the second partial transparent protective plate 66 on the front surface 67a side, but also in a V-shape on the back side. Since the reinforcing member 68 is joined to the opening portion of the groove portion 62, the first partial transparent protective plate 65 and the second partial transparent protective plate 66 have a strong transparent protective plate 67 that is not displaced or detached. Can be formed. Thereby, it is possible to manufacture a strong transparent protective plate 67 while having the same shape as the transparent protective plate described in the fourth embodiment.
  • the first and second embodiments 1 and 2 are modified by changing the shapes of the first side surface 62a formed on the first partial transparent protective plate 65 and the second side surface 62b formed on the second partial transparent protective plate 66.
  • a strong transparent protective plate having the same shape as the transparent protective plate described in 3 can be produced.
  • a reinforcing member may be joined to the side surface.
  • the transparent protective plate 67 of the image display device 450 is formed by joining the first partial transparent protective plate 65 and the second partial transparent protective plate 66 that are individually manufactured, and is V-shaped.
  • the transparent protective plate 67 of the image display device 450 having a curved screen can be manufactured easily and with high yield, and the transparent protective plate 67 can be made stronger.
  • the reinforcing member is not limited to the case where the reinforcing member is joined to the side surface of the V-shaped groove portion of the transparent protective plate formed by joining two transparent protective plates, and is described in the first, second, third, or fourth embodiment.
  • the transparent protective plate may be strengthened by bonding to the side surface of the V-shaped groove portion of the integrally formed transparent protective plate.
  • the angle which an observer does not observe a 2nd side surface for example
  • the first side surface may be a reflective surface
  • the second side surface may not be a reflective surface.
  • the cross-sectional shape of the groove portion of the transparent protective plate need not be axisymmetric, and the first side surface and the second side surface of the groove portion may be different shapes.
  • the observer may completely recognize the non-display area.
  • a part of the non-display area may be visible without being completely shielded.
  • FIG. 16 is a partial cross-sectional view showing an image display apparatus according to Embodiment 8 of the present invention.
  • the partial cross-sectional view of FIG. 16 corresponds to the cross-sectional view taken along the section line AA of FIG.
  • the same reference numerals as those in FIG. 9 of the second embodiment denote the same or corresponding components, and the description thereof is omitted.
  • 9 differs from FIG. 9 in that the transparent protective plate 110 is not provided with a groove, and the transparent protective plate 110 is provided with the first reflective surface 115 and the second reflective surface.
  • FIG. 9 differs from FIG. 9 in that the transparent protective plate 110 is not provided with a groove, and the transparent protective plate 110 is provided with the first reflective surface 115 and the second reflective surface.
  • the first reflecting surface 115 and the second reflecting surface 116 are the first reflecting surface 115 and the second reflecting surface 116, and the display area 22 a of the first liquid crystal panel 15 a and the second reflecting surface 116.
  • the liquid crystal panel 15b is provided at a position that is plane-symmetric with respect to the bisector of the angle formed by the display region 22b of the liquid crystal panel 15b.
  • the transparent protective plate 110 is provided on the observation side of the first liquid crystal panel 15a and the second liquid crystal panel 15b.
  • the transparent protective plate 110 is provided with a first back surface 110b facing the display region 22a of the first liquid crystal panel 15a, and a second surface facing the display region 22b of the second liquid crystal panel 15b.
  • a back surface 110c is provided.
  • the display surface of the first liquid crystal panel 15a and the first back surface 110b of the transparent protective plate 110 are bonded together by a sheet-like adhesive 80, and the display surface of the second liquid crystal panel 15b and the first back surface of the transparent protective plate 110 are bonded.
  • the back surface 110c of 2 is bonded by a sheet-like adhesive 80.
  • a first metal plate 117 is provided inside the transparent protective plate 110 from the first back surface 110 b of the transparent protective plate 110 toward the front surface 110 a of the transparent protective plate 110.
  • the crossing angle between the first metal plate 117 and the display area 22a of the first liquid crystal panel 15a is substantially a right angle.
  • the first metal plate 117 is provided along the non-display area 24a of the first liquid crystal panel 15a, and the longitudinal direction of the first metal plate 117 is provided in the direction perpendicular to the paper surface of FIG.
  • a second metal plate 118 is provided inside the transparent protective plate 110 from the second back surface 110c of the transparent protective plate 110 toward the front surface 110a of the transparent protective plate 110.
  • the intersection angle between the second metal plate 118 and the display area 22b of the second liquid crystal panel 15b is substantially a right angle.
  • the second metal plate 118 is provided along the non-display area 24b of the second liquid crystal panel 15b, and the longitudinal direction of the second metal plate 118 is provided in the direction perpendicular to the paper surface of FIG.
  • the first metal plate 117 and the second metal plate 118 are connected to each other on the front surface 11a side of the transparent protective plate 110.
  • the first metal plate 117 has a first reflecting surface 115 on the display area 22a side of the first liquid crystal panel 15a.
  • the second metal plate 118 has a second reflecting surface 116 on the display area 22b side of the second liquid crystal panel 15b.
  • the first reflection surface 115 and the second reflection surface 116 may be formed by mirror-finishing the surfaces of the first metal plate 117 and the second metal plate 118.
  • the first reflecting surface 115 and the second reflecting surface 116 function similarly to the side surface of the V-shaped groove portion of the transparent protective plate of the image display device described in the first to seventh embodiments, and obtain the same effect. be able to.
  • the transparent protective plate 110 in which the first metal plate 117 and the second metal plate 118 shown in FIG. 16 are embedded can be manufactured by, for example, the following method. First, the first metal plate 117 and the second metal plate 118 are previously installed in the mold so that the crossing angles of the transparent protective plate 110 with the first back surface 110b and the second back surface 110c are at right angles, respectively. Fix it. At this time, the first metal plate 117 is installed so that the first reflection surface 115 faces the display area 22a side of the first liquid crystal panel 15a, and the second reflection surface 116 of the second metal plate 118 is the first reflection surface 116. The second liquid crystal panel 15b is installed so as to face the display area 22b side.
  • the transparent protective plate 110 in which the first metal plate 117 and the second metal plate 118 are embedded can be formed.
  • the transparent protective plate may be formed by joining the first partial transparent protective plate and the second partial transparent protective plate.
  • the first partially transparent protective plate and the second partially transparent protective plate are joined to the first reflective surface on the surface corresponding to the first reflective surface 115 and the second reflective surface 116 in FIG. And a second reflecting surface. That is, the first partially transparent protective plate is a surface adjacent to the surface joined to the second partially transparent protective plate, the surface located on the liquid crystal panel 15a side is the first reflective surface, The second partially transparent protective plate is a surface adjacent to the surface joined to the first partially transparent protective plate, and the surface located on the liquid crystal panel 15a side is the second reflective surface.
  • the first reflection surface and the second reflection surface may be formed by performing mirror processing on the first partial transparent protective plate and the second partial transparent protective plate and depositing a metal film such as aluminum.
  • the first partially transparent protective plate and the second partially transparent protective plate are symmetrical with respect to the bisector of the angle formed by the display region 22a of the first liquid crystal panel 15a and the display region 22b of the second liquid crystal panel 15b.
  • the first reflection surface and the second reflection surface are set to be plane-symmetric as surfaces, and are bonded with, for example, a solvent adhesive for acrylic resin. Further, by flowing a resin such as PMMA into the groove portion of the transparent protective plate formed by the first reflective surface and the second reflective surface, the first protective surface 110 is similar to the transparent protective plate 110 shown in FIG.
  • a transparent protective plate having the reflective surface 115 and the second reflective surface 116 therein can be formed.
  • the shapes of the first reflecting surface and the second reflecting surface are not limited to those shown in FIG. 16, but are the same as the side surfaces of the V-shaped groove described in the first, second, third, or fourth embodiment.
  • the reflective surface may be formed by embedding a metal plate or metal member or by metal vapor deposition.
  • the said embodiment demonstrated the example which forms a 1st reflective surface and a 2nd reflective surface in the inside of a transparent protective part, for example, it is only from the angle which an observer does not observe a 2nd reflective surface.
  • the first reflection surface is required, and the second reflection surface may not be formed.
  • a first metal plate 117 having a first reflection surface 115 and a second metal plate 118 having a second reflection surface 116 are embedded in the transparent protective plate 110, and the first and first The two reflecting surfaces reflect the images in the first and second display areas toward the observation side, so that the images displayed on the front surface 110a of the transparent protective plate 110 are continuously displayed as one screen.
  • the image display device 600 to be visually recognized can be obtained.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

L'invention concerne un appareil d'affichage d'image (100) comprenant : un premier panneau d'affichage d'image (15a) qui possède une première zone d'affichage et une première zone de non-affichage ; un deuxième panneau d'affichage d'image (15b) qui possède une deuxième zone d'affichage et une deuxième zone de non-affichage ; et une plaque de protection transparente (30) qui possède une première surface arrière (30b) opposée à la première zone d'affichage, une deuxième surface arrière (30c) opposée à la deuxième zone d'affichage, une surface avant (30a) et une première surface de réflexion (32a) qui s'étend de la première surface arrière (30b) vers la surface avant (30b) et réfléchit une image affichée dans la première zone d'affichage. La première surface arrière (30b) et la direction dans laquelle l'image est réfléchie par la première surface de réflexion (32a) se croisent à l'extérieur de la première zone d'affichage. Des écrans configurés en utilisant une pluralité de panneaux d'affichage d'image qui possèdent des zones de non-affichage peuvent être visualisés en tant qu'un seul écran continu.
PCT/JP2017/005522 2016-06-17 2017-02-15 Appareil d'affichage d'image Ceased WO2017217009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016120886A JP2019135501A (ja) 2016-06-17 2016-06-17 画像表示装置
JP2016-120886 2016-06-17

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WO2017217009A1 true WO2017217009A1 (fr) 2017-12-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018158060A (ja) * 2017-03-24 2018-10-11 山佐株式会社 遊技機用表示ユニット及び遊技機
JP2020181129A (ja) * 2019-04-26 2020-11-05 アルパイン株式会社 表示装置およびその組立方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005003989A (ja) * 2003-06-12 2005-01-06 Seiko Epson Corp 画像表示装置
WO2007116910A1 (fr) * 2006-04-07 2007-10-18 Nec Corporation Affichage d'image
WO2010016194A1 (fr) * 2008-08-04 2010-02-11 シャープ株式会社 Dispositif d'affichage
WO2012102349A1 (fr) * 2011-01-27 2012-08-02 シャープ株式会社 Système multi-affichage et couvercle translucide utilisé ainsi
JP2016066085A (ja) * 2015-11-19 2016-04-28 三菱電機株式会社 表示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005003989A (ja) * 2003-06-12 2005-01-06 Seiko Epson Corp 画像表示装置
WO2007116910A1 (fr) * 2006-04-07 2007-10-18 Nec Corporation Affichage d'image
WO2010016194A1 (fr) * 2008-08-04 2010-02-11 シャープ株式会社 Dispositif d'affichage
WO2012102349A1 (fr) * 2011-01-27 2012-08-02 シャープ株式会社 Système multi-affichage et couvercle translucide utilisé ainsi
JP2016066085A (ja) * 2015-11-19 2016-04-28 三菱電機株式会社 表示装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018158060A (ja) * 2017-03-24 2018-10-11 山佐株式会社 遊技機用表示ユニット及び遊技機
JP2020181129A (ja) * 2019-04-26 2020-11-05 アルパイン株式会社 表示装置およびその組立方法
JP7221779B2 (ja) 2019-04-26 2023-02-14 アルパイン株式会社 表示装置およびその組立方法

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