JP2007121720A - Display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display apparatus capable of providing an observer with a stereoscopic image without using a light source. <P>SOLUTION: The display apparatus 1 includes: a display panel 10 for displaying images: and mirror parts 32 disposed behind the display panel 10, and reflecting light made incident from the observers 50 side, thereby separating the light into light traveling to the right eye 50a of the observer 50 via areas of the display panel 10, on which the right-eye images R1 are displayed, and light traveling to the left eye 50b of the observer 50 via areas of the display panel 10, on which the left-eye images L1 are displayed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display device, and more particularly to an image display device provided with means for separating light traveling toward an observer.

  Conventionally, by using an optical filter in which an opening that transmits light emitted from a light source and a light-shielding portion that shields light are formed in a vertical stripe shape when viewed from the viewer side, light traveling from the light source to the viewer side is used. A stereoscopic image display apparatus that separates and provides a stereoscopic image to an observer is known (for example, see Patent Document 1).

  FIG. 20 is a diagram showing, from above, a state in which an observer has seen a stereoscopic image display device including an optical filter according to a conventional example having the same configuration as the stereoscopic image display device disclosed in Patent Document 1. FIG. 21 is a perspective view of an optical filter of the stereoscopic image display apparatus according to the conventional example shown in FIG. With reference to FIG. 20 and FIG. 21, the structure of the stereoscopic image display apparatus 300 provided with the optical filter by a conventional example is demonstrated.

  As shown in FIG. 20, a stereoscopic image display device 300 according to a conventional example includes a display panel 310 for displaying an image, polarizing plates 320 and 330 arranged so as to sandwich the display panel 310, and a polarizing plate 330. An optical filter 340 disposed on the back side and a backlight 350 disposed on the back side of the optical filter 340 are provided.

  The display panel 310 displays a right-eye image R10 for observation by the right eye 360a of the observer 360 and a left-eye image L10 for observation by the left eye 360b of the observer 360, and the right-eye image R10 and The left-eye images L10 are displayed in a vertical stripe shape extending in a direction perpendicular to a line segment connecting the right eye 360a and the left eye 360b as viewed from the viewer 360 side. A set of the right-eye image R10 and the left-eye image L10 is displayed so as to correspond to an opening 341a of an optical filter 340 described later.

  As shown in FIGS. 20 and 21, the optical filter 340 includes a transparent glass substrate 341 and a light shielding part 342 formed on the glass substrate 341. An opening 341 a having a function of transmitting light from the backlight 350 is provided in a region other than the region where the light shielding portion 342 is formed on the glass substrate 341. The openings 341a and the light-shielding portions 342 are each provided in a vertical stripe shape extending in a direction orthogonal to a line segment connecting the right eye 360a and the left eye 360b when viewed from the viewer 360 side. Then, by setting the lengths of the opening 341a and the light shielding portion 342 in the D direction in FIGS. 20 and 21 to a predetermined length, the light emitted from the backlight 350 through the opening 341a is displayed on the display panel 310. The light traveling to the right eye 360a of the viewer 360 through the region where the right eye image R10 is displayed and the light traveling to the left eye 360b of the viewer 360 through the region where the left eye image L10 of the display panel 310 is displayed. It can be separated into light. Therefore, the right eye 360a observes only the region where the right-eye image R10 of the display panel 310 is displayed, and the left eye 360b observes only the region where the left-eye image L10 of the display panel 310 is displayed. Thereby, the observer 360 can observe a stereoscopic image.

Japanese Patent No. 2902958

  However, in the stereoscopic image display device 300 shown in FIGS. 20 and 21, the backlight 350 as a light source is used to cause the observer 360 to observe the right-eye image R10 and the left-eye image L10 displayed on the display panel 310. There was a problem that it was necessary to provide.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an image display device capable of providing at least a stereoscopic image to an observer without using a light source. Is to provide.

Means for Solving the Problems and Effects of the Invention

  In order to achieve the above object, an image display device according to one aspect of the present invention is arranged on the back side of a display panel for displaying an image and reflects light incident from the viewer side. Thus, the light traveling to the viewer side through the region where the first image of the display panel is displayed and the light traveling to the viewer side through the region where the second image of the display panel is displayed are separated. And reflecting means.

  In the image display device according to this aspect, as described above, by reflecting the light incident from the viewer side, the light traveling to the viewer side through the region where the first image of the display panel is displayed, By providing a reflecting means for separating light that travels toward the viewer through a region where the second image of the display panel is displayed, the light to which the first image is added without using a light source, The light can be advanced to the observer side in a state where the light to which the two images are added is separated. Accordingly, for example, if the right-eye image (first image) and the left-eye image (second image) are displayed on the display panel, the right-eye image and the left-eye image are respectively displayed on the observer's right eye and left eye. Can be incident. As a result, a stereoscopic image can be provided to an observer without using a light source.

  In the image display device according to the above aspect, preferably, the reflecting means reflects the light incident from the viewer side to the viewer side through the region where the right eye image is displayed on the display panel. The stereoscopic image is provided to the viewer by separating the light traveling to the right eye of the camera and the light traveling to the left eye of the viewer through the area where the left-eye image of the display panel is displayed. If comprised in this way, without using a light source, in the state which isolate | separated the light with which the image for right eyes was added, and the light with which the image for left eyes was added, it advances to the observer's right eye and left eye, respectively. be able to. As a result, a stereoscopic image can be provided to an observer without using a light source.

  In the image display device according to the above aspect, preferably, the reflecting means transmits light incident from the viewer side in the region on the back side of the display panel via the region where the first image of the display panel is displayed. Mirrors arranged in a part of the region that can be separated and reflected into light traveling to the viewer side and light traveling to the viewer side through the region where the second image of the display panel is displayed Contains members. If comprised in this way, with the simple structure, the light which injected into the mirror member will be reflected toward an observer's right eye through the area | region where the image for right eyes (1st image) of a display panel is displayed, for example. At the same time, it can be reflected toward the left eye of the observer through the region where the image for the left eye (second image) of the display panel is displayed. As a result, a stereoscopic image can be provided to an observer with a simple configuration and without using a light source.

  In the image display device including the mirror member, preferably, the mirror member extends along a second direction intersecting the first direction connecting both eyes of the observer and has a predetermined interval in the first direction. The first image and the second image of the display panel are displayed so as to extend along the second direction and to be adjacent to each other in the first direction. If comprised in this way, the light which injected into the mirror member extended along a 2nd direction can be advanced toward the 1st image and 2nd image displayed so that it may extend along a 2nd direction. it can. Thereby, the light incident on the area where the first image is displayed and the light incident on the area where the second image is displayed can be caused to travel in a state extending along the second direction. . As a result, the light to which the first image is added and the light to which the second image is added can be advanced to the viewer's right eye and left eye, respectively, so that a stereoscopic image can be provided to the viewer.

  In the image display device including the mirror member, preferably, the mirror member intersects both the first direction connecting both eyes of the observer and the second direction intersecting the first direction. It arrange | positions along a 3rd direction and the 1st image and 2nd image of a display panel are each displayed along a 3rd direction. If comprised in this way, the light which injected into the mirror member extended along a 3rd direction can be advanced toward the 1st image and 2nd image displayed so that it may extend along a 3rd direction. it can. Thereby, the light incident on the region where the first image is displayed and the light incident on the region where the second image is displayed can be made to travel in a state extending along the third direction, respectively. . As a result, the light separated so as to travel toward the right eye and the left eye is directed toward the observer's eyes in a state of being approximately evenly distributed in the first direction (vertical direction) and the second direction (lateral direction). Therefore, the reduction in the resolution of the image on the display panel observed by both sides of the observer can be distributed in the first direction (vertical direction) and the second direction (horizontal direction). As a result, it is possible to make the observer recognize that a stereoscopic image with little image deterioration is being observed.

  In the image display device including the mirror member, preferably, the mirror member is disposed on a line connecting the right eye of the observer and a region where the image for the right eye displayed on the display panel is displayed. Are arranged on a line connecting the left-eye image displayed on the display panel and the area where the left-eye image is displayed. If comprised in this way, while the light reflected by the mirror member can be easily advanced to an observer's right eye via the area | region where the image for right eyes is displayed, the area | region where the image for left eyes is displayed is displayed. Through the left eye of the observer. As a result, a stereoscopic image can be easily provided to the observer.

  In the image display device according to the above aspect, the reflecting unit preferably reflects a part of light incident from the viewer side to provide a stereoscopic image to the viewer, and the viewer side It is possible to switch between the second state in which a planar image is provided to the observer by reflecting the light incident from. If comprised in this way, while setting a reflection means to a 1st state, while being able to provide a stereoscopic image to an observer, a plane image is made to an observer by setting a reflection means to a 2nd state. Can be provided.

  In the image display device including the reflection unit capable of switching between the first state and the second state, the reflection unit preferably changes the incident light into light having the first polarization axis. A polarization control liquid crystal panel that can be switched between a first polarization state and a second polarization state that changes incident light into light having a second polarization axis; and a rear surface of the polarization control liquid crystal panel. A reflective polarizing plate that transmits light having the second polarizing axis and reflects light having the second polarizing axis, and a first polarized light that is disposed on the back side of the reflective polarizing plate and passes through the reflective polarizing plate And a mirror member that reflects light having an axis. In the first polarization state, after the incident light is changed to light having the first polarization axis, a part of the light is reflected by the mirror member and observed. A stereoscopic image is provided to the person, and in the second polarization state, After light is changed into light having a second polarization axis, the substantially all of the light plane images are provided to the observer is reflected by the reflective polarizer. If comprised in this way, a stereoscopic image and a plane image can be easily provided to an observer by switching a polarization control liquid crystal panel to the 1st polarization state and the 2nd polarization state.

  In the image display device according to the above aspect, preferably, the reflecting means changes the incident light into light having the first polarization axis, and the incident light is light having the second polarization axis. A polarization control liquid crystal panel capable of switching to the second polarization state to be changed to the first polarization state and capable of controlling the formation position of the first region in the first polarization state and the second region in the second polarization state; A reflective polarizing plate disposed on the back side of the polarization control liquid crystal panel and transmitting light having the first polarization axis and reflecting light having the second polarization axis, and controls the polarization control liquid crystal panel Thus, by providing the second region at a predetermined part of the polarization control liquid crystal panel, the light incident on the second region is changed to light having the second polarization axis, and then the light is reflected. The observer reflected by the polarizing plate By providing a stereoscopic image and controlling the polarization control liquid crystal panel to provide the second region in substantially all regions of the polarization control liquid crystal panel, the incident light is changed to light having the second polarization axis. After that, substantially all of the light is reflected by the reflective polarizing plate, and a planar image is provided to the observer. If comprised in this way, the light which passed the 2nd area | region provided in the predetermined one part position and was reflected by the reflective polarizing plate will add the light with which the 1st image was added, and the 2nd image. Since it progresses to the observer side in the state separated into the emitted light, the observer can observe a stereoscopic image. In addition, since substantially all of the region passes through the polarization control liquid crystal panel in the second region and the light reflected by the reflective polarizing plate travels to the viewer side with a predetermined planar image added thereto. The observer can observe the planar image. As a result, a stereoscopic image and a planar image can be provided to the observer without using a light source.

  In the image display device including the polarization control liquid crystal panel capable of providing the first region in the first polarization state and the second region in the second polarization state at the predetermined position, the first polarization provided at the predetermined position The first region in the state and the second region in the second polarization state are provided so as to extend along the second direction intersecting the first direction connecting both eyes of the observer and to be adjacent to the first direction. The first image and the second image of the display panel are displayed so as to extend along the second direction and to be adjacent to each other in the first direction. If comprised in this way, the 1st image and 2nd displayed so that the light which injected into the reflective polarizing plate through the 2nd area | region extended along a 2nd direction may be extended along a 2nd direction. It can be advanced toward the image. Thereby, the light incident on the area where the first image is displayed and the light incident on the area where the second image is displayed can be caused to travel in a state extending along the second direction. . As a result, the light to which the first image is added and the light to which the second image is added can be advanced to the viewer's right eye and left eye, respectively, so that a stereoscopic image can be provided to the viewer.

  The image display device according to the above aspect preferably further includes a light absorbing member that is provided on the back side of the reflecting means and absorbs light incident from the observer side. If comprised in this way, the light permeate | transmitted without being reflected by a reflection means can be absorbed. As a result, light that has been transmitted without being reflected by the reflecting means is reflected by the left eye image (right eye image) displayed on the display panel on the viewer's right eye (left eye). Progress can be suppressed.

  The image display device according to the above aspect preferably further includes a polarizing plate provided on the viewer side of the display panel. If comprised in this way, the light which has a predetermined polarization axis among the light (sunlight) which has the various polarization axes which inject from an observer side can be permeate | transmitted. Thereby, the light that has the predetermined polarization axis is reflected on the viewer side through the region where the first image of the display panel is displayed, and the region where the second image of the display panel is displayed. Can be separated into light traveling toward the viewer via the.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is an exploded perspective view of an image display apparatus according to a first embodiment of the present invention. FIG. 2 is a diagram showing a state in which an observer views the image display device according to the first embodiment shown in FIG. 1 from above. First, with reference to FIG. 1 and FIG. 2, the structure of the image display apparatus 1 by 1st Embodiment of this invention is demonstrated.

  As shown in FIGS. 1 and 2, the image display device 1 according to the first embodiment includes a display panel 10 for displaying an image, a polarizing plate 20 disposed on the viewer 50 side of the display panel 10, and a display. And an optical member 30 disposed on the back side of the panel 10.

  The display panel 10 displays a right-eye image R1 for observation by the observer's 50 right eye 50a and a left-eye image L1 for observation by the observer 50's left eye 50b. Hereinafter, unless otherwise specified, the right eye 50a and the left eye 50b indicate the right eye 50a of the observer 50 and the left eye 50b of the observer 50, respectively. As shown in FIG. 2, the right-eye image R1 and the left-eye image L1 extend along the B direction (see FIG. 1) perpendicular to the A direction connecting the right eye 50a and the left eye 50b, respectively, and the A direction. Are alternately displayed adjacent to each other. A set of the right-eye image R1 and the left-eye image L1 is displayed so as to correspond to a mirror portion 32 of the optical member 30 described later.

  The polarizing plate 20 is set to have a polarization axis of, for example, about 135 ° when viewed from the viewer 50 side, and thus has a function of transmitting light having a polarization axis of about 135 ° as viewed from the viewer 50 side. Have. Hereinafter, unless otherwise specified, the angle of the polarization axis indicates an angle viewed from the viewer 50 side.

  Here, in the first embodiment, as shown in FIGS. 1 and 2, the optical member 30 is formed on a black base material 31 having a function of absorbing light from the outside and the surface of the base material 31. The mirror part 32 is included. The mirror part 32 is an example of the “reflecting means” and “mirror member” of the present invention, and the black base material 31 is an example of the “light absorbing member” of the present invention. In areas other than the area where the mirror part 32 is formed on the surface of the base material 31, a light shielding part 31 a made of the surface of the black base material 31 is provided. Further, the mirror part 32 and the light shielding part 31a are alternately provided so as to extend along the B direction and to be adjacent to each other in the A direction. The mirror unit 32 is disposed on a line connecting the right eye 50a and the area where the right-eye image R1 of the display panel 10 is displayed, and the area where the left eye 50b and the left-eye image L1 of the display panel 10 are displayed. Placed on the line connecting Therefore, the mirror unit 32 transmits the reflected light to the right eye 50a through the area where the right eye image R1 is displayed, and the light which travels to the left eye 50b through the area where the left eye image L1 is displayed. Can be separated.

  3 and 4 are diagrams for explaining a stereoscopic image display method of the image display apparatus according to the first embodiment shown in FIG. 3 and 4, the broken line indicates the angle of the polarization axis of the light transmitted through the polarizing plate 20, and the arrow indicates the angle of the polarization axis of the transmitted light. Next, a stereoscopic image display method of the image display apparatus 1 according to the first embodiment will be described with reference to FIGS.

  The external light (sunlight) having a plurality of polarization axes incident from the viewer 50 side of the image display device 1 is approximately about by the polarizing plate 20 having a polarization axis of about 135 ° as shown in FIGS. Only light having a polarization axis of 135 ° is transmitted and travels toward the display panel 10. The light having a polarization axis of about 135 ° is transmitted through the display panel 10 and travels toward the mirror portion 32 and the light shielding portion 31a of the optical member 30. The light traveling toward the light shielding portion 31a is shielded by the light shielding portion 31a as shown in FIG. Further, as shown in FIGS. 2 and 4, the light traveling to the mirror unit 32 is reflected by the mirror unit 32 and travels toward the display panel 10 again. Then, one of the right-eye image R1 and the left-eye image L1 on the display panel 10 enters the area where it is displayed.

  At this time, the mirror unit 32 travels the reflected light to the right eye 50a via the area where the right-eye image R1 is displayed and to the left eye 50b via the area where the left-eye image L1 is displayed. Since the light is separated into light, the light reflected by the mirror unit 32 and passing through the region where the right-eye image R1 is displayed travels toward the right eye 50a and passes through the region where the left-eye image L1 is displayed. The light travels toward the left eye 50b. Thereafter, light having a polarization axis of about 135 ° traveling toward the right eye 50a and the left eye 50b passes through the polarizing plate 20 having a polarization axis of about 135 °, and enters the right eye 50a and the left eye 50b, respectively. Therefore, the right eye 50a observes only the region where the right eye image R1 of the display panel 10 is displayed, and the left eye 50b observes only the region where the left eye image L1 is displayed. Thereby, the observer 50 can observe a stereoscopic image composed of the right-eye image R1 and the left-eye image L1.

(Effect of 1st Embodiment)
In the first embodiment, as described above, by reflecting the light incident from the viewer 50 side, the light traveling to the right eye 50a side through the region where the image R1 for the right eye of the display panel 10 is displayed; By providing the mirror portion 32 that separates the light traveling toward the left eye 50b through the area where the left eye image L1 is displayed, the light with the right eye image R1 added without using the light source, and the left eye The light can be advanced toward the viewer 50 in a state where the light to which the image L1 is added is separated. Accordingly, the right-eye image R1 and the left-eye image L1 can be incident on the display panel 10 to the right eye 50a and the left eye 50b, respectively. As a result, a stereoscopic image can be provided to the observer 50 without using a light source.

(Second Embodiment)
FIG. 5 is an exploded perspective view of an image display apparatus according to the second embodiment of the present invention. FIG. 6 is a diagram showing a state in which an observer views the image display device according to the second embodiment shown in FIG. 5 from above. Next, referring to FIG. 5 and FIG. 6, in the second embodiment, unlike the first embodiment, a transmission state in which external light (sunlight) is transmitted and a reflection state in which reflection is performed can be switched. The image display device 100 including the possible switching mirror 140 will be described. Note that the image display apparatus 100 according to the second embodiment switches the switching mirror 140 between a transmission state and a reflection state, thereby providing a stereoscopic image display mode for providing a stereoscopic image to the observer 50 and a planar image for providing a planar image. It is possible to switch between display modes.

  As shown in FIGS. 5 and 6, the image display device 100 according to the second embodiment includes a display panel 10 for displaying an image, a polarizing plate 20 disposed on the viewer 50 side of the display panel 10, The optical member 30 arrange | positioned at the back side of the display panel 10 and the switching mirror 140 arrange | positioned between the display panel 10 and the optical member 30 are provided. The second embodiment is the same as the first embodiment except that the switching mirror 140 is added, and the description of the configuration other than the switching mirror 140 is omitted.

  Here, in the second embodiment, the switching mirror 140 includes a polarization control liquid crystal panel 141 disposed on the display panel 10 side, and a reflective polarizing plate 142 disposed on the back side of the polarization control liquid crystal panel 141. Yes. The “reflecting means” of the present invention is a concept including the switching mirror 140 and the mirror unit 32.

  In the second embodiment, the polarization control liquid crystal panel 141 is formed of a TN (Twisted Nematic) liquid crystal panel. In the OFF state, the polarization control liquid crystal panel 141 emits light while changing the polarization axis of incident light by about 90 °. An approximately 90 ° TN system that emits light without changing the polarization axis of the incident light is used. The polarization control liquid crystal panel 141 is configured to be able to switch between an ON state and an OFF state by controlling a voltage applied to the liquid crystal layer. Specifically, light having a polarization axis of about 135 ° incident on the polarization control liquid crystal panel 141 in the ON state is transmitted as it is without changing the polarization axis. Then, the light having the polarization axis of about 135 ° incident on the polarization control liquid crystal panel 141 in the OFF state is transmitted as light having the polarization axis of about 45 ° by changing the polarization axis by about 90 °.

  In the second embodiment, the reflective polarizing plate 142 has a function of transmitting light having a predetermined polarization axis and reflecting light having a polarization axis orthogonal to the predetermined polarization axis. Specifically, it has a function of transmitting light having a polarization axis of about 135 ° and reflecting light having a polarization axis of about 45 °. Therefore, the switching mirror 140 constituted by the polarization control liquid crystal panel 141 and the reflective polarizing plate 142 transmits incident light having a polarization axis of about 135 ° by controlling the polarization control liquid crystal panel 141 to be in an ON state. By entering the transmission state and controlling the polarization control liquid crystal panel 141 to the OFF state, it enters a reflection state in which incident light having a polarization axis of about 135 ° is reflected.

(3D image display mode)
7 and 8 are views for explaining a stereoscopic image display method of the image display apparatus according to the second embodiment shown in FIG. 7 and FIG. 8, the broken line indicates the angle of the polarization axis of the light transmitted through the polarizing plate 20 and the reflective polarizing plate 142, and the arrow indicates the angle of the polarization axis of the transmitted light. Next, a stereoscopic image display method of the image display device 100 according to the second embodiment will be described with reference to FIGS. In the stereoscopic image display mode, the switching mirror 140 is controlled to the transmission state (the polarization control liquid crystal panel is turned on), and the right-eye image R1 and the left-eye image L1 are displayed on the display panel 10.

  In the present embodiment, external light (sunlight) having a plurality of polarization axes incident from the viewer 50 side of the image display device 100 is polarized light having a polarization axis of about 135 ° as shown in FIGS. The plate 20 allows light having a polarization axis of about 135 ° to pass through the display panel 10 and travel toward the polarization control liquid crystal panel 141. At this time, since the polarization control liquid crystal panel 141 is controlled to be in the ON state, light having a polarization axis of about 135 ° is transmitted and incident on the reflective polarizing plate 142. Since the reflective polarizing plate 142 has a function of transmitting light having a polarization axis of about 135 °, the light having a polarizing axis of about 135 ° incident on the reflective polarizing plate 142 is transmitted. It proceeds toward the mirror part 32 and the light shielding part 31a of the optical member 30. The light traveling toward the light shielding portion 31a is shielded by the light shielding portion 31a as shown in FIG.

  Further, the light traveling to a part of the region where the mirror unit 32 is formed is reflected by the mirror unit 32 and travels toward the reflective polarizing plate 142 again, as shown in FIGS. Then, light having a polarization axis of about 135 ° incident on the reflective polarizing plate 142 is transmitted and travels toward the polarization control liquid crystal panel 141. As described above, since the polarization control liquid crystal panel 141 is controlled to be in the ON state, light having a polarization axis of about 135 ° is transmitted and travels toward the display panel 10, and the right-eye image R1 and the left-eye image are transmitted. One of the images for use L1 enters the area where it is displayed. At this time, the mirror unit 32 causes the reflected light to travel to the right eye 50a through the area where the right-eye image R1 of the display panel 10 is displayed, and through the area where the left-eye image L1 is displayed. Since the light is separated into the light traveling to 50b, the light reflected by the mirror unit 32 and passing through the region where the right-eye image R1 is displayed travels toward the right eye 50a and the left-eye image L1 is displayed. The light that has passed through the region travels toward the left eye 50b. Thereafter, light having a polarization axis of about 135 ° traveling toward the right eye 50a and the left eye 50b passes through the polarizing plate 20 having a polarization axis of about 135 °, and enters the right eye 50a and the left eye 50b, respectively. Therefore, the right eye 50a observes only the region where the right eye image R1 of the display panel 10 is displayed, and the left eye 50b observes only the region where the left eye image L1 is displayed. Thereby, the observer 50 can observe a stereoscopic image composed of the right-eye image R1 and the left-eye image L1.

(Plane image display mode)
FIG. 9 is a diagram showing a state in which an observer looks at the image display apparatus at the time of displaying a planar image according to the second embodiment shown in FIG. 5, and FIG. 10 is a diagram showing the second embodiment shown in FIG. It is a figure for demonstrating the plane image display method of the image display apparatus of a form. In FIG. 10, the broken line indicates the angle of the polarization axis of the light transmitted through the polarizing plate 20 and the reflective polarizing plate 142, and the arrow indicates the angle of the polarization axis of the transmitted light. Next, with reference to FIG. 9 and FIG. 10, the planar image display method of the image display apparatus 100 of 2nd Embodiment is demonstrated. In the planar image display mode in which the planar image S is provided to the observer 50, the switching mirror 140 is controlled to be in a reflective state (the polarization control liquid crystal panel 141 is in an OFF state), and the planar image S is displayed on the display panel 10. deep.

  The external light (sunlight) having a plurality of polarization axes incident from the viewer 50 side of the image display device 100 is approximately about by the polarizing plate 20 having a polarization axis of about 135 ° as shown in FIGS. Light having a polarization axis of 135 ° is transmitted, travels toward the display panel 10, and travels toward the polarization control liquid crystal panel 141. At this time, since the polarization control liquid crystal panel 141 is controlled in the OFF state, the light having the polarization axis of about 135 ° is changed to the light having the polarization axis of about 45 ° by changing the polarization axis by about 90 °. And is incident on the reflective polarizing plate 142. In this embodiment, as shown in FIG. 9, the reflective polarizing plate 142 has a function of reflecting light having a polarization axis of about 45 °, and therefore has an incident polarization axis of about 45 °. The light is reflected by all regions of the reflective polarizing plate 142 provided on the entire back surface of the polarization control liquid crystal panel 141 and travels again toward the polarization control liquid crystal panel 141. As described above, since the polarization control liquid crystal panel 141 is controlled to be in the OFF state as shown in FIG. 10, light having a polarization axis of about 45 ° is changed again by about 90 °, The light having a polarization axis of 135 ° is transmitted and travels toward the display panel 10. Then, the light incident on the display panel 10 enters a region where the planar image S of the display panel 10 is displayed. Thereafter, light having a polarization axis of about 135 ° traveling toward the viewer 50 side passes through the polarizing plate 20 having a polarization axis of about 135 °, and enters the right eye 50a and the left eye 50b. Therefore, the observer 50 can observe the planar image S.

(Effect of 2nd Embodiment)
In the second embodiment, as described above, the switching mirror 140 reflects the incident external light (sunlight), thereby providing a three-dimensional image to the observer, and the incident external light (sunlight). The reflection mirror is configured so that it can be switched to a reflection state in which a planar image is provided to the observer, and the switching mirror 140 is in a transmission state (the polarization control liquid crystal panel 141 is in an ON state), thereby allowing the observer 50 to An image can be provided, and the planar image S can be provided to the observer 50 by setting the switching mirror 140 to the reflection state (the polarization control liquid crystal panel 141 is in the OFF state). As a result, a three-dimensional image can be provided to the observer and a flat image S can be provided.

  The second embodiment also has the same effect as the first embodiment described above.

(Third embodiment)
FIG. 11 is an exploded perspective view of an image display apparatus according to the third embodiment of the present invention. FIG. 12 is a diagram showing a state in which an observer views the image display device according to the third embodiment shown in FIG. 11 from above. FIG. 13 is an enlarged view of the polarization control liquid crystal panel of the image display device according to the third embodiment shown in FIG. Next, referring to FIGS. 11 to 13, in the third embodiment, unlike the first embodiment and the second embodiment, a switching mirror capable of switching a predetermined region to a transmission state or a reflection state. The image display apparatus 200 including 240 will be described. The image display device 200 according to the third embodiment switches a predetermined area of the switching mirror 240 between a transmission state and a reflection state, thereby providing a stereoscopic image display mode for providing a stereoscopic image to the observer 50 and a planar image. It is possible to switch to the provided flat image display mode.

  As shown in FIGS. 11 and 12, the image display device 200 according to the third embodiment includes a display panel 10 for displaying an image, a polarizing plate 20 disposed on the viewer 50 side of the display panel 10, A base material 31 disposed on the back side of the display panel 10 and a switching mirror 240 disposed between the display panel 10 and the base material 31 are provided. In the third embodiment, unlike the first embodiment and the second embodiment, the mirror portion 32 is not formed on the surface of the substrate 31. In the third embodiment, since the configuration other than the configuration of the switching mirror 240 is the same as that of the first embodiment and the second embodiment, the description of the configuration other than the switching mirror 240 is omitted.

  Here, in the third embodiment, the switching mirror 240 includes a polarization control liquid crystal panel 241 disposed on the display panel 10 side and a reflective polarizing plate 242 disposed on the back side of the polarization control liquid crystal panel 241. Yes. The switching mirror 240 is an example of the “reflecting means” in the present invention.

  In the third embodiment, the polarization control liquid crystal panel 241 includes a polarization region 241a and a transmission region 241b. The polarization region 241a and the transmission region 241b are alternately provided so as to extend along the B direction orthogonal to the A direction connecting the left eye 50b and the right eye 50a and to be adjacent to the A direction. The polarization region 241a is arranged on a line connecting the right eye 50a and the region where the right-eye image R1 of the display panel 10 is displayed, and connects the left eye 50b and the region where the left-eye image L1 is displayed. Provided on the line. Therefore, the light transmitted through the polarization region 241a and reflected by the reflection type polarizing plate 242 described later is transmitted to the right eye 50a through the region where the right-eye image R1 is displayed, and the left-eye image L1 is displayed. It is possible to separate the light traveling to the left eye 50b through the region. The polarization region 241a and the transmission region 241b are examples of the “second region” and the “first region” in the present invention, respectively.

  Further, as shown in FIG. 13, the polarization control liquid crystal panel 241 is provided with a plurality of electrodes 243a and 243b extending along the B direction, and the electrodes 243a and 243b are adjacent to each other with a predetermined interval. Is provided. Electrodes 243a and 243b are provided in the polarization region 241a and the transmission region 241b, respectively. The polarization region 241a in which the electrode 243a is provided corresponds to a set of the right-eye image R1 and the left-eye image L1 of the display panel 10.

  The polarization control liquid crystal panel 241 is composed of a TN liquid crystal panel. The polarization control liquid crystal panel 241 emits light with the polarization axis of incident light changed by about 90 ° in the OFF state, and substantially changes the polarization axis of incident light in the ON state. An approximately 90 ° TN system that emits light without using it is used. The polarization control liquid crystal panel 241 is configured to be able to switch the polarization region 241a and the transmission region 241b to an ON state and an OFF state, respectively, by controlling a voltage applied to the liquid crystal layer. That is, by controlling the voltage applied to the electrode 243a provided in the polarizing region 241a, the voltage applied to the liquid crystal layer located in the polarizing region 241a can be controlled to control the polarizing region 241a to be in an ON state or an OFF state. It is. Similarly, by controlling the voltage applied to the electrode 243b provided in the transmissive region 241b, the voltage applied to the liquid crystal layer located in the transmissive region 241b is controlled to control the transmissive region 241b to be in an ON state or an OFF state. It is possible. Therefore, light having a polarization axis of about 135 ° incident on the polarization region 241a and the transmission region 241b in the ON state is transmitted as it is without changing the polarization axis. Then, the light having the polarization axis of about 135 ° incident on the polarization region 241a and the transmission region 241b in the OFF state is transmitted with the light having the polarization axis of about 45 ° by changing the polarization axis by about 90 °. .

  In the third embodiment, the reflective polarizing plate 242 has a function of transmitting light having a predetermined polarization axis and reflecting light having a polarization axis orthogonal to the predetermined polarization axis. Specifically, it has a function of transmitting light having a polarization axis of about 135 ° and reflecting light having a polarization axis of about 45 °. Therefore, the switching mirror 240 constituted by the polarization control liquid crystal panel 241 and the reflective polarizing plate 242 controls the polarization region 241a and the transmission region 241b to be in an ON state, thereby allowing incident light having a polarization axis of about 135 °. In addition to being in a transmissive state where light is transmitted, by controlling the polarizing region 241a and the transmissive region 241b to be in an OFF state, a reflecting state in which incident light having a polarization axis of about 135 ° is reflected.

(3D image display mode)
14 and 15 are diagrams for explaining a stereoscopic image display method of the image display apparatus according to the third embodiment shown in FIG. 14 and 15, the broken line indicates the angle of the polarization axis of the light transmitted through the polarizing plate 20 and the reflective polarizing plate 242, and the arrow indicates the angle of the polarization axis of the transmitted light. Next, a stereoscopic image display method of the image display device 200 according to the third embodiment will be described with reference to FIGS. 14 and 15. In the stereoscopic image display mode, the polarization region 241a of the polarization control liquid crystal panel 241 is controlled to be in the OFF state and the transmission region 241b is controlled to be in the ON state, thereby displaying the right-eye image R1 and the left-eye image L1 on the display panel 10. Keep it.

  External light (sunlight) having a plurality of polarization axes incident from the observer 50 side of the image display device 200 is approximately about 20% by the polarizing plate 20 having a polarization axis of about 135 °, as shown in FIGS. Light having a polarization axis of 135 ° is transmitted through the display panel 10 and then travels toward the polarization region 241a and the transmission region 241b of the polarization control liquid crystal panel 241.

  At this time, since the transmission region 241b is controlled to be in the ON state as shown in FIG. 14, light having a polarization axis of about 135 ° is transmitted and light having a polarization axis of about 135 ° is transmitted. It is incident on a reflective polarizing plate 242 having a function. Then, light having a polarization axis of about 135 ° incident on the reflective polarizing plate 242 is transmitted, travels toward the base material 31, and is shielded.

  Since the polarization region 241a is controlled to be in the OFF state as shown in FIG. 15, the light having the polarization axis of about 135 ° is changed by about 90 ° and the polarization axis of about 45 ° is changed. Is incident on a reflective polarizing plate 242 having a function of reflecting light having a polarization axis of about 45 °. Then, light having a polarization axis of about 45 ° incident on a partial region of the reflective polarizing plate 242 corresponding to the polarizing region 241a is reflected and travels again toward the polarizing region 241a of the polarization control liquid crystal panel 241. As described above, since the polarization region 241a is controlled to be in the OFF state, the light having the polarization axis of about 45 ° is changed again by about 90 ° to the light having the polarization axis of about 135 °. Then, it proceeds toward the display panel 10 and enters one of the areas where either the right-eye image R1 or the left-eye image L1 is displayed. At this time, the polarization region 241a causes the reflected light to travel to the right eye 50a via the region where the right-eye image R1 of the display panel 10 is displayed, and to the left eye via the region where the left-eye image L1 is displayed. 50b, the light passing through the polarizing region 241a, reflected by the reflective polarizing plate 242 and passing through the region where the right-eye image R1 is displayed travels toward the right eye 50a. The light that has passed through the region where the left-eye image L1 is displayed travels toward the left eye 50b. Thereafter, light having a polarization axis of about 135 ° traveling toward the right eye 50a and the left eye 50b passes through the polarizing plate 20 having a polarization axis of about 135 °, and enters the right eye 50a and the left eye 50b, respectively. Therefore, the right eye 50a observes only the region where the right eye image R1 is displayed, and the left eye 50b observes only the region where the left eye image L1 is displayed. Thereby, the observer 50 can observe a stereoscopic image composed of the right-eye image R1 and the left-eye image L1.

(Plane image display mode)
FIG. 16 is a diagram showing a state in which an observer views the image display device at the time of displaying a planar image according to the third embodiment shown in FIG. 11, and FIG. 17 is a diagram showing the third embodiment shown in FIG. It is a figure for demonstrating the plane image display method of the image display apparatus of a form. In FIG. 17, the broken line indicates the angle of the polarization axis of the light transmitted through the polarizing plate 20 and the reflective polarizing plate 242, and the arrow indicates the angle of the polarization axis of the transmitted light. Next, a planar image display method of the image display device 200 according to the third embodiment will be described with reference to FIGS. 16 and 17. In the planar image display mode, the polarization region 241 a and the transmission region 241 b of the polarization control liquid crystal panel 241 are controlled to be in the OFF state, and the planar image S is displayed on the display panel 10.

  The external light (sunlight) having a plurality of polarization axes incident from the viewer 50 side of the image display device 200 is approximately about by the polarizing plate 20 having a polarization axis of about 135 °, as shown in FIGS. Light having a polarization axis of 135 ° passes through the display panel 10 and then travels toward the polarization control liquid crystal panel 241. At this time, since the polarization region 241a and the transmission region 241b of the polarization control liquid crystal panel 241 are controlled to be in the OFF state, the light having the polarization axis of about 135 ° is changed by about 90 °, and the light has about 45 °. The light having the polarization axis is transmitted and is incident on the reflective polarizing plate 242. As shown in FIG. 16, the reflection-type polarizing plate 242 has a function of reflecting light having a polarization axis of about 45 °, and thus transmits through all regions of the polarization region 241a and the transmission region 241b. The light having a polarization axis of about 45 ° incident on the reflective polarizing plate 242 is reflected by the reflective polarizing plate 242 and travels again toward the polarization control liquid crystal panel 241. As described above, since the polarization control liquid crystal panel 241 is controlled to be in the OFF state as shown in FIG. 17, the light having the polarization axis of about 45 ° is changed again by about 90 °, The light having a polarization axis of 135 ° is transmitted and travels toward the display panel 10. Then, the light incident on the display panel 10 enters a region where the planar image S of the display panel 10 is displayed. Thereafter, light having a polarization axis of about 135 ° traveling toward the viewer 50 side passes through the polarizing plate 20 having a polarization axis of about 135 °, and enters the right eye 50a and the left eye 50b. Therefore, the observer 50 can observe the planar image S.

(Effect of the third embodiment)
In the third embodiment, as described above, the polarization control liquid crystal panel 241 capable of providing the polarization region 241a and the transmission region 241b at predetermined positions is provided, and the polarization control liquid crystal panel 241 is in an ON state at a predetermined position. By providing the transmission region 241b, the light transmitted through the transmission region 241b of the polarization control liquid crystal panel 241 can be transmitted without changing the polarization axis. As a result, light having a polarization axis of about 135 ° transmitted through the transmission region 241b can be incident on and transmitted through the reflective polarizing plate 242, and then shielded by the substrate 31. Further, by providing the polarization region 241a in the OFF state at a predetermined position of the polarization control liquid crystal panel 241, the light transmitted through the polarization region 241a can be changed to light having a polarization axis of about 45 °. As a result, light having a polarization axis of about 45 ° that passes through the polarization region 241 a of a partial region of the polarization control liquid crystal panel 241 and is incident on the reflection type polarizing plate 242 is reflected by the reflection type polarizing plate 242. be able to. Thus, the polarization region 241a and the reflective polarizing plate 242 provided at predetermined positions of the polarization control liquid crystal panel 241 allow external light (sunlight), light with the right-eye image R1 added, and left-eye image L1. Can be advanced to the viewer 50 side in a state where the light is separated from the light added. As a result, a stereoscopic image can be provided to the observer 50 without using a light source.

  In the third embodiment, the polarization region 241a and the transmission region 241b of the polarization control liquid crystal panel 241 are configured to be switchable between the ON state and the OFF state, thereby controlling the polarization region 241a to the OFF state and transmitting the transmission region. By controlling 241b to the ON state, a stereoscopic image can be provided to the observer 50. Then, by turning off the polarization region 241a and the transmission region 241b, all regions of the polarization control liquid crystal panel 241 are turned off, and the planar image S can be provided to the observer 50. As a result, by switching the switching mirror 240 (polarization control liquid crystal panel 241), a stereoscopic image can be provided to the observer 50 and a planar image S can be provided.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and all modifications within the meaning and scope equivalent to the scope of claims for patent are included.

  For example, in the first embodiment and the second embodiment, the example in which the mirror unit 32 is provided along the B direction orthogonal to the A direction connecting the left eye 50b and the right eye 50a has been described, but the present invention is not limited thereto. As in the modification shown in FIG. 18, the mirror unit 82 may be arranged along the C direction that intersects both the A direction and the B direction. In this case, the right-eye image and the left-eye image displayed on the display panel are for displaying the three primary colors of red (R), green (G), and blue (B), respectively, as shown in FIG. In addition to displaying for each dot area, it is necessary to display along the C direction. As a result, the light separated so as to travel toward the right eye 50a and the left eye 50b is distributed substantially evenly in the vertical direction (A direction) and the horizontal direction (B direction) in red (R), green (G ) And blue (B) can be advanced toward the eyes of the viewer 50, so that the resolution of the image of the display panel 10 observed by both sides of the viewer 50 is reduced in the vertical direction (A direction) and in the horizontal direction. It can be dispersed in the direction (B direction). As a result, it is possible to make the observer recognize that a stereoscopic image with little image deterioration is being observed.

  In the second embodiment and the third embodiment, the polarization control liquid crystal panels 141 and 241 use the approximately 90 ° TN system. However, the present invention is not limited to this, and for example, VA (Vertical Alignment). ) Method and other methods such as ECB (Electrically Controlled Birefringence) method may be used.

  In the second and third embodiments, the reflective polarizing plate transmits light having a polarization axis of about 135 ° that has passed through the polarization control liquid crystal panel in the ON state, and the polarization control liquid crystal in the OFF state. Although a reflective polarizing plate that reflects light having a polarization axis of about 45 ° transmitted through the panel has been described, the present invention is not limited to this, and the polarization axis of about 135 ° transmitted through the polarization control liquid crystal panel in the ON state is not limited thereto. A reflective polarizing plate that reflects the light having the polarization axis of about 45 ° transmitted through the polarization control liquid crystal panel in the OFF state may be used.

  In the above embodiment, the example in which the polarization axis of the polarizing plate 20 is set to about 135 ° has been shown. However, the present invention is not limited to this, and the polarization axis of the polarizing plate 20 is set to a value other than the above value. May be.

  In the above embodiment, an example in which a polarizing plate having a polarization axis of about 135 ° is arranged on the viewer side of the display panel is shown. However, the present invention is not limited to this, and circularly polarized light is arranged on the viewer side of the display panel. A plate may be arranged.

  In the second embodiment and the third embodiment, an example in which a reflective polarizing plate that transmits light having a polarization axis of about 135 ° and reflects light having a polarization axis of about 45 ° has been described. However, the present invention is not limited to this, and a reflective polarizing plate that transmits light having a polarization axis other than about 135 ° and reflects light having a polarization axis other than about 45 ° may be used.

1 is an exploded perspective view of an image display device according to a first embodiment of the present invention. It is the figure which showed the state which the observer saw the image display apparatus by 1st Embodiment shown in FIG. 1 from upper direction. It is a figure for demonstrating the three-dimensional image display method of the image display apparatus of 1st Embodiment shown in FIG. It is a figure for demonstrating the three-dimensional image display method of the image display apparatus of 1st Embodiment shown in FIG. It is a disassembled perspective view of the image display apparatus by 2nd Embodiment of this invention. It is the figure which showed the state which the observer saw the image display apparatus by 2nd Embodiment shown in FIG. 5 from upper direction. It is a figure for demonstrating the three-dimensional image display method of the image display apparatus of 2nd Embodiment shown in FIG. It is a figure for demonstrating the three-dimensional image display method of the image display apparatus of 2nd Embodiment shown in FIG. It is the figure which showed the state which the observer saw the image display apparatus at the time of the plane image display of 2nd Embodiment shown in FIG. 5 from upper direction. It is a figure for demonstrating the plane image display method of the image display apparatus of 2nd Embodiment shown in FIG. It is a disassembled perspective view of the image display apparatus by 3rd Embodiment of this invention. It is the figure which showed the state which the observer saw the image display apparatus by 3rd Embodiment shown in FIG. 11 from upper direction. FIG. 12 is an enlarged view of a polarization control liquid crystal panel of the image display device according to the third embodiment shown in FIG. 11. It is a figure for demonstrating the three-dimensional image display method of the image display apparatus of 3rd Embodiment shown in FIG. It is a figure for demonstrating the three-dimensional image display method of the image display apparatus of 3rd Embodiment shown in FIG. It is the figure which showed the state which the observer saw the image display apparatus at the time of the planar image display of 3rd Embodiment shown in FIG. 11 from upper direction. It is a figure for demonstrating the plane image display method of the image display apparatus of 3rd Embodiment shown in FIG. It is a perspective view of the optical member of the image display apparatus by the modification of 1st Embodiment shown in FIG. It is the figure which showed the positional relationship of the mirror part of the optical member of the image display apparatus by the modification of 1st Embodiment shown in FIG. 1, and the image of a display panel. It is the figure which showed the state which the observer looked at the stereoscopic image display apparatus provided with the optical filter by a conventional example from the upper part. FIG. 21 is a perspective view of an optical filter of the stereoscopic image display device according to the conventional example shown in FIG. 20.

Explanation of symbols

1, 100, 200 Image display device 10 Display panel 20 Polarizing plate 31 Base material (light absorbing member)
32 Mirror part (reflecting means, mirror member)
240 switching mirror (reflection means)
141, 241 Polarization control liquid crystal panel 142, 242 Reflective polarizing plate 241a Polarization region (second region)
241b Transmission region (first region)

Claims (12)

A display panel for displaying images;
Light that is disposed on the back side of the display panel and reflects light incident from the viewer side, thereby traveling to the viewer side through a region where the first image of the display panel is displayed, and the display An image display device comprising: a reflection unit that separates light that travels toward the viewer through a region where a second image of the panel is displayed.   The reflecting means, when reflecting light incident from the observer side to the observer side, the light traveling to the right eye of the observer through a region where the image for the right eye of the display panel is displayed; The image display apparatus according to claim 1, wherein the stereoscopic image is provided to the observer by separating the light from the left eye of the observer through a region where the left-eye image of the display panel is displayed. .   The reflecting means is configured to transmit light incident from the viewer side in the region on the back side of the display panel, and light traveling to the viewer side through a region where the first image of the display panel is displayed. And a mirror member disposed in a part of the region that can be separated and reflected from the light traveling toward the viewer through a region where the second image of the display panel is displayed. 3. The image display device according to 1 or 2. The mirror member extends along a second direction intersecting the first direction connecting the eyes of the observer, and is provided at a predetermined interval in the first direction.
The image display apparatus according to claim 3, wherein the first image and the second image of the display panel are displayed so as to extend along the second direction and to be adjacent to the first direction. The mirror member is arranged along a third direction that intersects both a first direction that connects the eyes of the observer and a second direction that intersects the first direction. ,
The image display device according to claim 3, wherein the first image and the second image of the display panel are each displayed along the third direction.   The mirror member is disposed on a line connecting a right eye of the observer and a region where a right-eye image displayed on the display panel is displayed, and is displayed on the left eye of the observer and the display panel. The image display device according to claim 3, wherein the image display device is disposed on a line connecting a region in which a left-eye image is displayed.   The reflection means reflects a part of light incident from the observer side, thereby reflecting a first state in which a stereoscopic image is provided to the observer and light incident from the observer side. The image display device according to claim 1, wherein the image display device can be switched between a second state in which a planar image is provided to the observer. The reflecting means is
A polarization control liquid crystal capable of switching between a first polarization state in which incident light is changed to light having a first polarization axis and a second polarization state in which incident light is changed to light having a second polarization axis. A panel,
A reflective polarizing plate disposed on the back side of the polarization control liquid crystal panel and transmitting light having the first polarization axis and reflecting light having the second polarization axis;
A mirror member that is disposed on the back side of the reflective polarizing plate and reflects light having a first polarization axis that has passed through the reflective polarizing plate;
In the first polarization state, after the incident light is changed to light having the first polarization axis, a part of the light is reflected by the mirror member to provide a stereoscopic image to the observer,
In the second polarization state, incident light is changed to light having the second polarization axis, and then substantially all of the light is reflected by the reflective polarizing plate to provide a planar image to the observer. The image display device according to claim 7. The reflecting means is
It is possible to switch between a first polarization state that changes incident light into light having a first polarization axis and a second polarization state that changes incident light into light having a second polarization axis, and A polarization control liquid crystal panel capable of controlling formation positions of the first region in the first polarization state and the second region in the second polarization state;
A reflective polarizing plate that is disposed on the back side of the polarization control liquid crystal panel and transmits light having the first polarization axis and reflects light having the second polarization axis;
By controlling the polarization control liquid crystal panel, the second region is provided at a predetermined part of the polarization control liquid crystal panel, so that light incident on the second region has a second polarization axis. After that, the light is reflected by the reflective polarizing plate to provide a stereoscopic image to the observer,
After the incident light is changed to light having the second polarization axis by controlling the polarization control liquid crystal panel and providing the second region in substantially all regions of the polarization control liquid crystal panel. The image display device according to claim 1, wherein substantially all of the light is reflected by the reflective polarizing plate to provide the observer with a planar image. The first region in the first polarization state and the second region in the second polarization state provided at the predetermined position are along a second direction that intersects a first direction connecting both eyes of the observer. And extending adjacent to the first direction,
The image display device according to claim 9, wherein the first image and the second image of the display panel are displayed so as to extend along the second direction and to be adjacent to the first direction.   The image display device according to claim 1, further comprising a light absorbing member that is provided on a back side of the reflecting unit and absorbs light incident from the observer side.   The image display apparatus according to claim 1, further comprising a polarizing plate provided on the viewer side of the display panel.

Images