JP4844575B2 - Image display method - Google Patents

Description

The present invention relates to an image display method , and more particularly to an image display method capable of displaying a stereoscopic image.

  Conventionally, a three-dimensional image display device capable of displaying a three-dimensional stereoscopic image is known (see, for example, Patent Document 1).

  In Patent Document 1, an electronic parallax barrier disposed on the observer side of the image display surface is controlled by a control unit such as a microcomputer, so that a predetermined position of the electronic parallax barrier is set at a predetermined position. There has been disclosed a three-dimensional image display device capable of forming a shaped opening and a light-shielding portion in a stripe shape substantially perpendicular to a line segment connecting the left eye and right eye of an observer. In the three-dimensional image display device disclosed in Patent Document 1, when a three-dimensional image is provided to an observer, an image for the left eye is incident on the left eye of the observer, and the right eye for the observer's right eye is used. An opening of the electronic parallax barrier is formed so that the image is incident.

  Conventionally, there has been proposed a stereoscopic image display device capable of presenting a stereoscopic image to an observer by arranging a barrier provided with a slit-shaped opening and a light-shielding portion on the viewer side of the display panel. FIG. 16 is a plan view for explaining the principle of a conventional stereoscopic image display apparatus. With reference to FIG. 16, a configuration of a conventional stereoscopic image display apparatus 500 will be described.

  As shown in FIG. 16, a conventional stereoscopic image display device 500 includes a display panel 501 for displaying an image, a polarizing plate 502 disposed on the viewer 510 side of the display panel 501, and an observer of the polarizing plate 502. And a barrier 503 provided on the 510 side.

  The display panel 501 includes a glass substrate 501a. In addition, the display panel 501 includes a pixel column 501b and pixels extending in a direction substantially perpendicular to a line segment connecting the left eye 510a and the right eye 510b of the observer 510 (perpendicular to the paper surface of FIG. 16). Rows 501c are provided alternately. The pixel column 501b displays an image L10 for viewing by the left eye 510a of the observer 510, and the pixel column 501c displays an image R10 for viewing by the right eye 510b of the viewer 510.

  In addition, the barrier 503 is provided with a light shielding portion 503 a for shielding light emitted from the display panel 501 and an opening 503 b for transmitting light emitted from the display panel 501. As in the pixel columns 501b and 501c of the display panel 501, the light shielding portion 503a and the opening 503b are substantially orthogonal to the line segment connecting the left eye 510a and the right eye 510b of the observer 510 (see FIG. 16). They are alternately provided so as to extend in a direction perpendicular to the paper surface. Further, the light shielding portion 503a and the opening portion 503b are provided corresponding to each set of the pixel columns 501b and 501c of the display panel 501.

  Next, a stereoscopic image display method by the conventional stereoscopic image display device 500 will be described with reference to FIG.

  In the conventional stereoscopic image display apparatus 500, when the observer 510 observes the display panel 501 through the opening 503b of the barrier 503, the left eye 510a of the observer 510 is displayed on the pixel column 501b of the display panel 501. The image R10 displayed on the pixel column 501c of the display panel 501 is incident on the right eye 510b of the viewer 510. Thereby, the observer 510 can observe a stereoscopic image.

Japanese Patent No. 2857429

  However, in the conventional stereoscopic image display device 500 shown in FIG. 16, the stereoscopic image display device 500 is adapted to provide a stereoscopic image to the viewer 510 only when the stereoscopic image display device 500 is arranged vertically, for example. For example, when the image display device 500 is arranged in a horizontal direction, there is a problem that it is difficult to provide a stereoscopic image to the observer 510. Also, the above-mentioned Patent Document 1 has the same problem as the conventional stereoscopic image display device 500 shown in FIG.

The present invention has been made to solve the above-described problems, and one object of the present invention is to provide an observer with a three-dimensional view both in the case of being arranged vertically and in the case of being arranged horizontally. To provide an image display method capable of providing an image.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, an image display method according to one aspect of the present invention displays a left-eye image and a right-eye image on a display panel, and advances the left-eye image toward the left eye of an observer. An image display method for displaying a stereoscopic image by advancing a right-eye image toward an observer's right eye, wherein the left-eye image and the right-eye are displayed on the display panel in a state where the display panel is arranged in a first direction. The first image is displayed in a checkered pattern, and the light emitted from the light source is incident on and emitted from the display panel in which the left-eye image and the right-eye image are displayed in a checkered pattern. The light is separated into light and light having the second polarization axis, and one of light having the first polarization axis and light having the second polarization axis is emitted as light corresponding to the left-eye image and the right-eye image. By Display body image, with the second direction on the display panel are arranged perpendicular to the first direction, and displays the left-eye image and the right-eye image along a first direction on the display panel, the After alternately displaying in two directions , the light emitted from the light source is incident on and emitted from the display panel in which the left-eye image and the right-eye image are alternately displayed in the second direction. A three-dimensional image is displayed by separating light having a polarization axis and emitting light having two polarization axes corresponding to a left-eye image and a right-eye image among light having four different polarization axes .

In the image display method according to the above aspect, the light having the first polarization axis is preferably obtained by the polarization axis control means in which the polarization control regions are arranged in a checkered pattern with the display panel arranged in the first direction. And the light having the second polarization axis are separated, and one of the light having the first polarization axis and the light having the second polarization axis as light corresponding to the left-eye image and the right-eye image is Proceeding to the viewer by suppressing the progression of the other of the light having the first polarization axis and the light having the second polarization axis toward the viewer's right eye and left eye while traveling toward the left and right eyes Provide stereoscopic images.

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

  FIG. 1 is an exploded perspective view illustrating an image display apparatus according to an embodiment of the present invention. FIG. 2 is a diagram showing a display panel, a phase difference plate, and a polarization control liquid crystal panel when the display panel according to the embodiment of the present invention shown in FIG. 1 is arranged vertically (state of FIG. 1). FIG. 3 shows a state in which an observer looks at the display panel when displaying a stereoscopic image when the display panel according to the embodiment of the present invention shown in FIG. 1 is arranged vertically (state shown in FIG. 1). It is a figure. FIG. 4 shows a display panel, a phase difference plate, and a polarization control liquid crystal panel when the display panel according to an embodiment of the present invention shown in FIG. 1 is disposed sideways (a state in which FIG. 1 is rotated by 90 °). FIG. 5 and FIG. 6 show the display panel when the stereoscopic panel is displayed when the display panel according to the embodiment of the present invention shown in FIG. 1 is placed sideways (a state where FIG. 1 is rotated by 90 °). It is the figure which showed the state which looked at from the upper direction along the 100-100 line and the 200-200 line | wire of FIG. 4, respectively. 7 to 10 are views for explaining in detail the configuration of the image display apparatus according to the embodiment of the present invention shown in FIG. First, with reference to FIGS. 1-10, the structure of the image display apparatus 1 by one Embodiment of this invention is demonstrated.

  As shown in FIG. 1, an image display device 1 according to an embodiment of the present invention includes a backlight 2 and a display panel 3 that is disposed on the light emission side of the backlight 2 and includes a liquid crystal display panel that displays an image. Polarizing plates 4 and 5 disposed so as to sandwich the display panel 3, a retardation plate 6 disposed on the light emitting side of the polarizing plate 5, and a polarization control liquid crystal panel disposed on the light emitting side of the retardation plate 6 7 and a polarizing plate 8 disposed on the light exit side of the polarization control liquid crystal panel 7. The backlight 2 is an example of the “light source” in the present invention, and the retardation plate 6 is an example of the “first polarization axis control unit” in the present invention. The polarization control liquid crystal panel 7 and the polarizing plate 8 are examples of the “second polarization axis control unit” in the present invention.

  The backlight 2 has a function of irradiating the polarizing plate 4 with light. Further, since the polarizing plate 4 is set so as to have a polarization axis of about 135 ° when viewed from the viewer 20 side, the function of transmitting only light having a polarization axis of about 135 ° when viewed from the viewer 20 side. Have Hereinafter, unless otherwise specified, the angle of the polarization axis indicates an angle viewed from the viewer 20 side. In the present embodiment, the angle of the polarization axis indicates an angle in a state where the display panel 3 is arranged vertically.

  Further, for example, the display panel 3 emits light with the polarization axis of incident light changed by about 90 ° in the OFF state and emits light with substantially no change in the polarization axis of incident light in the ON state. Twisted Nematic) liquid crystal panel. As shown in FIG. 7, the display panel 3 includes a plurality of pixels including three dot regions 3a to 3c for displaying the three primary colors of red (R), green (G), and blue (B) light. The region 3d has a plurality of pixel regions 3h composed of three dot regions 3e to 3g for displaying the three primary colors of light. Each of the dot regions 3a to 3c and 3e to 3g has a rectangular shape with an aspect ratio of about 1: 3.

  Here, in this embodiment, when the display panel 3 is arranged vertically (in the case of FIGS. 2 and 3), the left-eye image L1 and the right-eye image displayed in the dot areas 3a to 3c and 3e to 3g. The image R1 is arranged in a checkered pattern (stepped shape) along the C direction which is an oblique direction intersecting with both the A direction and the B direction in FIG. Specifically, in each of the dot areas 3a to 3c and 3e to 3g shown in FIG. 7, the display area of the left eye image L1 is indicated by a hatched area, and the display area of the right eye image R1 is , A non-hatched area that is not hatched (hatched). As shown in FIG. 7, the image L1 for the left eye located in the hatching area is displayed so that the RGB dot areas 3a to 3c and 3e to 3g are continuous in an oblique direction (C direction in FIG. 7). The right-eye image R1 located in the non-hatched area is also displayed so that the RGB dot areas are continuous in an oblique direction (C direction in FIG. 7). The left-eye image L1 and the right-eye image R1 are alternately displayed in a direction that intersects an oblique direction (C direction in FIG. 7) in which the RGB dot regions extend continuously.

  Further, in the present embodiment, when the display panel 3 is arranged horizontally, the dot areas 3a to 3c and 3e to 3g corresponding to the three primary colors (RGB) of light are respectively observed as shown in FIG. It arrange | positions so that it may extend in a perpendicular direction (vertical direction) (A direction) substantially with respect to the line segment which connected the left eye 20a and the right eye 20b of the person 20 (refer FIG. 5). In the case of the horizontal arrangement shown in FIG. 8, the left-eye image L2 indicated by the hatched area and the right-eye image R2 indicated by the non-hatched area are respectively RGB in the vertical direction (A direction). The dot areas 3a to 3c and 3e to 3g are displayed so as to extend continuously. In the case of the horizontal arrangement shown in FIG. 8, the left-eye image L2 and the right-eye image R2 extending in the vertical direction (A direction) are alternately displayed in the horizontal direction (B direction).

  As shown in FIG. 1, since the polarizing plate 5 is set to have a polarization axis of about 45 °, it has a function of transmitting only light having a polarization axis of about 45 °. Moreover, the phase difference plate 6 includes a plurality of polarization control regions 6a and 6b as shown in FIG. The polarization control region 6a is an example of the “first polarization control region” in the present invention, and the polarization control region 6b is an example of the “second polarization control region” in the present invention. Further, as shown in FIG. 3, the polarization control region 6a is a region where the left-eye image L1 of the display panel 3 is displayed when the display panel 3 is arranged vertically (in the case of FIGS. 2 and 3). Are arranged on a line connecting the right eye 20b of the observer 20 and on a line connecting the area where the image R1 for the right eye of the display panel 3 is displayed and the left eye 20a of the observer 20. Hereinafter, unless otherwise specified, the left eye 20a and the right eye 20b indicate the left eye 20a and the right eye 20b of the observer 20. The polarization control area 6b is arranged on a line connecting the area where the left eye image L1 of the display panel 3 is displayed and the left eye 20a, and the area where the right eye image R1 of the display panel 3 is displayed and the right eye. It is arranged on a line connecting 20b. Further, as shown in FIG. 9, the polarization control regions 6a and 6b of the retardation film 6 correspond to the dot regions 3a to 3c and 3e to 3g of the display panel 3 arranged in the vertical direction shown in FIG. It has a substantially rectangular shape. When the display panel 3 (see FIG. 7) is arranged vertically, the longitudinal directions of the polarization control regions 6a and 6b of the retardation plate 6 are the same as the dot regions 3a to 3c and 3e to 3g of the display panel 3. Are arranged in a substantially vertical direction (B direction) with respect to a line segment connecting the left eye 20a and the right eye 20b (see FIG. 3). In addition, the polarization control regions 6 a and 6 b of the phase difference plate 6 have a function of changing the polarization axis of transmitted light to a polarization axis that is axisymmetric with respect to the polarization axis of the phase difference plate 6. Specifically, the phase difference plate 6 has a function of imparting a phase difference of λ / 2 to incident light, and therefore, for example, light having a polarization axis at an angle α with respect to the polarization axis of the phase difference plate 6. Is changed into light having a polarization axis of angle -α by the polarization axis of the phase difference plate 6 and emitted. In this embodiment, as will be described later, the polarization control liquid crystal panel 7 also has the same function.

  In the present embodiment, the polarization control regions 6a and 6b of the retardation plate 6 correspond to the display regions of the left-eye image L1 and the right-eye image R1 on the display panel 3, as shown in FIGS. Are arranged in a checkered pattern (stepped shape) along the C direction which is an oblique direction intersecting with both the A direction and the B direction in FIG. 9, the polarization control region 6a has a polarization axis of about 75 ° when viewed from the observer 20 (see FIG. 3) side, and the polarization control region 6b has a polarization of about 15 °. Has an axis.

  The polarization control liquid crystal panel 7 has polarization control regions 7a and 7b as shown in FIG. The polarization control region 7a is an example of the “third polarization control region” in the present invention, and the polarization control region 7b is an example of the “fourth polarization control region” in the present invention. Also, the polarization control regions 7a and 7b correspond to the line segment connecting the left eye 20a and the right eye 20b when the display panel 3 (see FIG. 1) is disposed horizontally (in the case of FIGS. 4 to 6). They are arranged so as to extend substantially in the vertical direction (direction A) (see FIG. 10). The polarization control regions 7a and 7b are each provided with an electrode 7c extending in the A direction. As a result, a voltage can be applied to the liquid crystal positioned in the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 using the electrode 7c, so that the polarization can be controlled by controlling the voltage application state to the liquid crystal. It becomes possible to easily change the polarization control state of the control regions 7a and 7b. The polarization control regions 7a and 7b have a polarization axis of about 120 °. Further, the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 disable the polarization axis of about 120 ° by changing to the voltage application state (ON state) and do not change the polarization axis of light having a predetermined polarization axis. It has a function of transmitting through. Further, the polarization control regions 7a and 7b have a function of making the polarization axis of about 120 ° effective by changing to a voltage non-application state (OFF state) and changing the polarization axis of light symmetrically with respect to the polarization axis. Have. In addition, when the display panel 3 (see FIG. 1) is arranged vertically (in the case of FIGS. 2 and 3) during stereoscopic image display, the polarization control regions 7a and 7b are in a voltage non-application state (OFF state). )become. When the display panel 3 (see FIG. 1) is disposed sideways (in the case of FIGS. 4 to 6), the polarization control region 7a is in a voltage non-application state (OFF state) and the polarization control region 7b. Is in a voltage application state (ON state).

  Further, in the line segment connecting the left eye 20a and the right eye 20b when the display panel 3 (see FIGS. 5 and 6) of the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 (see FIG. 10) is disposed horizontally. The length in the direction along the direction (B direction) substantially corresponds to the length in the direction along the line segment connecting the left eye 20a and the right eye 20b of the dot areas 3a to 3c and 3e to 3g (B direction). It is provided as follows.

  When the display panel 3 (see FIG. 1) is disposed sideways (in the case of FIGS. 4 to 6), the polarization control region 7a of the polarization control liquid crystal panel 7 is as shown in FIGS. And a line connecting the area (hatching area) where the left-eye image L2 is displayed and the right eye 20b, and a line connecting the area (non-hatching area) where the right-eye image R2 is displayed and the left eye 20a Placed in. In addition, the polarization control region 7b of the polarization control liquid crystal panel 7 is disposed on a line connecting the region (hatching region) where the left eye image L2 is displayed and the left eye 20a, and the region where the right eye image R2 is displayed. It is arranged on a line connecting (non-hatched area) and the right eye 20b.

  Further, as shown in FIGS. 3 and 5, the polarization control liquid crystal panel 7 includes a distance (W1) from the central portion in the thickness direction of the display panel 3 to the surface on the viewer 20 side of the phase difference plate 6, and the display panel. The distance (W2) from the center part in the thickness direction of 3 to the surface on the viewer 20 side of the polarization control liquid crystal panel 7 is about the same as the aspect ratio (about 1: 3) of the dot regions 3a to 3c and 3e to 3g. It arrange | positions so that it may become a ratio of 1: 3. If comprised in this way, it is possible to make the distance from the display panel 3 to the observer 20 substantially equal when the display panel 3 is arranged vertically and horizontally.

  As shown in FIG. 1, the polarizing plate 8 is set to have a polarization axis of about 45 °. The polarizing plate 8 has a function of changing incident light to light having a polarization axis of about 45 ° and transmitting it.

(3D image display mode when placed vertically)
FIG. 11 is a view for explaining a stereoscopic image display method when the display panel according to the embodiment of the present invention shown in FIG. In FIG. 11, the broken lines indicate the angles of the polarization axes of the polarizing plates 4, 5, 8, the phase difference plate 6 and the polarization control liquid crystal panel 7, and the arrows indicate the angles of the polarization axes of the transmitted light. Next, with reference to FIG. 3, FIG. 7, FIG. 10, and FIG. 11, a stereoscopic image display method when the display panel 3 is vertically arranged according to an embodiment of the present invention will be described.

  First, the light emitted from the backlight 2 (see FIG. 3) is light having a polarization axis of about 135 ° when viewed from the observer 20 (see FIG. 3) side by the polarizing plate 4, as shown in FIG. Only transparent. Further, the light emitted from the polarizing plate 4 is incident on the dot regions 3 a to 3 c and 3 e to 3 g of the display panel 3. In this case, as shown in FIG. 7, the left-eye image L1 is displayed in the hatched (hatched) areas of the dot areas 3a to 3c and 3e to 3g, and the dot areas 3a to 3c and 3e to 3g are displayed. The right-eye image R1 is displayed in the non-hatched area. Further, as shown in FIG. 11, the light incident on the display panel 3 is emitted by the display panel 3 with the polarization axis changed by 90 °. That is, the light transmitted through the display panel 3 has a polarization axis with a polarization axis of about 45 °. And the light radiate | emitted from the display panel 3 permeate | transmits the polarizing plate 5 which has a polarization axis of about 45 degrees. The light transmitted through the polarizing plate 5 enters the polarization control region 6 a or 6 b of the phase difference plate 6.

  In the present embodiment, the light incident on the phase difference plate 6 has a polarization axis of about 45 ° when viewed from the observer 20 (see FIG. 3) side. Therefore, as shown in FIG. The light incident on the polarization control region 6a of the plate 6 is changed to a linearly symmetric polarization axis with respect to the polarization axis of about 75 ° of the polarization control region 6a and is transmitted. That is, the light emitted from the polarization control region 6a has a polarization axis of about 105 °. The light emitted from the polarization control region 6a of the phase difference plate 6 is an example of “light having a first polarization axis” in the present invention. The light emitted from the polarization control region 6 a of the phase difference plate 6 is transmitted through the polarization control regions 7 a and 7 b of the polarization control liquid crystal panel 7. At this time, since the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 are controlled to be in an OFF state in which no voltage is applied to the electrode 7c (see FIG. 10), the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 are controlled. Has a polarization axis of about 120 °. Accordingly, the light incident on the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 is changed to a polarization axis that is axisymmetric with respect to the polarization axis of about 120 ° of the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7. Through. That is, the light emitted from the polarization control liquid crystal panel 7 has a polarization axis of about 135 °. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is shielded by the polarizing plate 8 having a polarization axis of about 45 °. In this case, as shown in FIG. 3, the polarization control region 6a of the phase difference plate 6 is arranged on a line connecting the region for displaying the left-eye image L1 of the display panel 3 and the right eye 20b. It is possible to suppress the image L1 from entering the right eye 20b. Further, since the polarization control region 6a of the phase difference plate 6 is disposed on a line connecting the region where the right-eye image R1 of the display panel 3 is displayed and the left eye 20a, the right-eye image R1 enters the left eye 20a. Can be suppressed.

  On the other hand, the light incident on the polarization control region 6b of the phase difference plate 6 changes to a polarization axis that is line-symmetric with respect to the polarization axis of about 15 ° of the polarization control region 6b of the phase difference plate 6 as shown in FIG. To be transparent. That is, the light emitted from the polarization control region 6b has a polarization axis of about 165 °. The light emitted from the polarization control region 6b of the phase difference plate 6 is an example of “light having a second polarization axis” in the present invention. The light emitted from the polarization control region 6 b of the phase difference plate 6 is transmitted through the polarization control regions 7 a and 7 b of the polarization control liquid crystal panel 7. At this time, since the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 are controlled to be in an OFF state in which no voltage is applied to the electrode 7c (see FIG. 10), the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 are controlled. Has a polarization axis of about 120 °. Therefore, the light incident on the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 is changed to a polarization axis that is axisymmetric with respect to the polarization axis of about 120 ° of the polarization control regions 7a and 7b and is transmitted. That is, the light emitted from the polarization control liquid crystal panel 7 has a polarization axis of about 75 °. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° and is emitted from the polarizing plate 8. In this case, as shown in FIG. 3, the polarization control region 6b of the phase difference plate 6 is arranged on a line connecting the region for displaying the left-eye image L1 of the display panel 3 and the left eye 20a. The work image L1 can be incident on the left eye 20a. Further, since the polarization control region 6b of the phase difference plate 6 is arranged on a line connecting the region for displaying the right eye image R1 of the display panel 3 and the right eye 20b, the right eye image R1 is incident on the right eye 20b. It becomes possible to do.

  As described above, the left-eye image L1 and the right-eye image R1 are incident on the left eye 20a and the right eye 20b, respectively, in the vertical orientation, so that the observer 20 can view a stereoscopic image. .

(3D image display mode when placed in landscape orientation)
FIG. 12 is a view for explaining a stereoscopic image display method when the display panel shown in FIG. 1 according to the embodiment of the present invention is disposed in the horizontal direction. Next, with reference to FIG. 5, FIG. 6, FIG. 8, FIG. 10, and FIG. 12, a stereoscopic image display method when the display panel 3 is disposed in the horizontal orientation according to an embodiment of the present invention will be described.

  First, the light irradiated from the backlight 2 (refer FIG. 5 and FIG. 6) permeate | transmits only the light which has a polarization axis of about 135 degrees by the polarizing plate 4, as shown in FIG. In the horizontal orientation, the polarization axis is rotated by 90 ° compared to the vertical orientation. However, in the present embodiment, the angle of the polarization axis in the vertical orientation is used as it is in the horizontal orientation for simplification. I will explain. Further, the light emitted from the polarizing plate 4 is incident on the dot regions 3 a to 3 c and 3 e to 3 g of the display panel 3. In this case, as shown in FIG. 8, the left-eye image L2 is displayed in the hatched (hatched) areas of the dot areas 3a to 3c and 3e to 3g, and the dot areas 3a to 3c and 3e to 3g are displayed. The right-eye image R2 is displayed in the non-hatched area. Further, as shown in FIG. 12, the light incident on the display panel 3 is emitted by the display panel 3 with the polarization axis changed by 90 °. That is, the light transmitted through the display panel 3 has a polarization axis of about 45 ° when viewed from the observer 20 (see FIGS. 5 and 6) side. And the light radiate | emitted from the display panel 3 permeate | transmits the polarizing plate 5 which has a polarization axis of about 45 degrees. The light transmitted through the polarizing plate 5 enters the polarization control region 6 a or 6 b of the phase difference plate 6.

  In this embodiment, the light incident on the phase difference plate 6 has a polarization axis of about 45 ° when viewed from the observer 20 (see FIG. 5) side. Therefore, as shown in FIG. The light incident on the polarization control region 6a of the plate 6 is changed to a linearly symmetric polarization axis with respect to the polarization axis of about 75 ° of the polarization control region 6a of the phase difference plate 6 and is transmitted. That is, the light emitted from the polarization control region 6a has a polarization axis of about 105 °.

  Further, in the case of the horizontal orientation, the polarization control region 7a of the polarization control liquid crystal panel 7 is controlled to be in an OFF state in which no voltage is applied to the electrode 7c (see FIG. 10). The polarization axis of about 120 ° in region 7a is valid. As a result, the light that has exited the polarization control region 6 a of the retardation plate 6 and entered the polarization control region 7 a of the polarization control liquid crystal panel 7 has a polarization axis of about 120 ° in the polarization control region 7 a of the polarization control liquid crystal panel 7. On the other hand, it is changed to a line-symmetric polarization axis and transmitted. That is, the light emitted from the polarization control region 6a of the phase difference plate 6 and emitted from the polarization control region 7a has a polarization axis of about 135 °. The light emitted from the polarization control region 6a of the retardation plate 6 and emitted from the polarization control region 7a of the polarization control liquid crystal panel 7 is an example of “light having a third polarization axis” in the present invention. The light emitted from the polarization control region 7a of the polarization control liquid crystal panel 7 is shielded by the polarizing plate 8 having a polarization axis of about 45 °. In this case, as shown in FIGS. 5 and 6, the polarization control region 6a of the phase difference plate 6 and the polarization control region 7a of the polarization control liquid crystal panel 7 where the light passing through both are shielded include the left eye 20a and the display panel. Display area half of the right-eye image R2 (in the case of FIG. 5, the display area XL on the right side of the right-eye image R2 and in the case of FIG. 6 the display area XL on the left side of the right-eye image R2). Since they are arranged on the connecting line, it is possible to prevent half of the right-eye image R2 from entering the left eye 20a. In addition, the polarization control region 6a of the retardation plate 6 and the polarization control region 7a of the polarization control liquid crystal panel 7 in which the light that has passed through both are shielded are a display region that is half of the right eye 20b and the left eye image L2 of the display panel 3. (In the case of FIG. 5, it is the display area YL on the left side of the image L2 for the left eye, and in the case of FIG. 6, the display area YR on the right side of the image L2 for the left eye). It is possible to suppress half of the image L2 from entering the right eye 20b.

  On the other hand, since the polarization control region 7b of the polarization control liquid crystal panel 7 is controlled to be in an ON state in which a voltage is applied to the electrode 7c (see FIG. 10) in the horizontal arrangement, the polarization control region 7b of the polarization control liquid crystal panel 7 is controlled. The polarization axis becomes invalid. Therefore, the light emitted from the polarization control region 6a of the phase difference plate 6 and incident on the polarization control region 7b of the polarization control liquid crystal panel 7 is emitted without changing the polarization axis, as shown in FIG. That is, the light emitted from the polarization control region 6a of the phase difference plate 6 and emitted from the polarization control region 7b of the polarization control liquid crystal panel 7 has a polarization axis of about 105 ° when viewed from the observer 20 (see FIG. 5) side. Have The light emitted from the polarization control region 6a of the phase difference plate 6 and emitted from the polarization control region 7b of the polarization control liquid crystal panel 7 is an example of “light having a fourth polarization axis” in the present invention. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° and is emitted from the polarizing plate 8. In this case, as shown in FIGS. 5 and 6, the polarization control region 6a of the phase difference plate 6 and the polarization control region 7b of the polarization control liquid crystal panel 7 are half of the right eye 20b and the right eye image R2 of the display panel 3. Since it is arranged on a line connecting the display area (in the case of FIG. 5, the display area XR on the right side of the right-eye image R2 and in the case of FIG. 6 the display area XL on the left side of the right-eye image R2), Half of the right-eye image R2 can be incident on the right eye 20b. Further, the polarization control region 6a of the phase difference plate 6 and the polarization control region 7b of the polarization control liquid crystal panel 7 are the left eye 20a and a display region that is half of the left eye image L2 of the display panel 3 (in the case of FIG. 5, for the left eye). The display area YL on the left side of the image L2 is arranged on a line connecting with the display area YR on the right side of the image L2 for the left eye in the case of FIG. 6, so that half of the image L2 for the left eye is incident on the left eye 20a. It becomes possible to do.

  In this embodiment, the light incident on the phase difference plate 6 has a polarization axis of about 45 ° when viewed from the observer 20 (see FIG. 5) side. Therefore, as shown in FIG. The light incident on the polarization control region 6b of the plate 6 is changed to a polarization axis that is axisymmetric with respect to the polarization axis of about 15 ° of the polarization control region 6b of the phase difference plate 6 and is transmitted. That is, the light emitted from the polarization control region 6b has a polarization axis of about 165 °.

  Further, in the case of the horizontal orientation, the polarization control region 7a of the polarization control liquid crystal panel 7 is controlled to be in an OFF state in which no voltage is applied to the electrode 7c (see FIG. 10). The polarization axis of about 120 ° in region 7a is valid. As a result, the light that has exited the polarization control region 6 b of the phase difference plate 6 and entered the polarization control region 7 a of the polarization control liquid crystal panel 7 has a polarization axis of about 120 ° in the polarization control region 7 a of the polarization control liquid crystal panel 7. On the other hand, it is changed to a line-symmetric polarization axis and transmitted. That is, the light emitted from the polarization control region 6b of the phase difference plate 6 and emitted from the polarization control region 7a has a polarization axis of about 75 °. The light emitted from the polarization control region 6b of the phase difference plate 6 and emitted from the polarization control region 7a of the polarization control liquid crystal panel 7 is an example of “light having a fifth polarization axis” in the present invention. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° when viewed from the observer 20 (see FIG. 5) side and is emitted from the polarizing plate 8. In this case, as shown in FIGS. 5 and 6, the polarization control region 6b of the phase difference plate 6 and the polarization control region 7a of the polarization control liquid crystal panel 7 are half of the left eye 20a and the right-eye image R2 of the display panel 3. Since it is arranged on a line connecting the display area (in the case of FIG. 5, the display area XL on the left side of the right-eye image R2 and in the case of FIG. 6 the right-side display area XR), Half of the right-eye image R2 enters the left eye 20a. Further, the polarization control region 6b of the phase difference plate 6 and the polarization control region 7a of the polarization control liquid crystal panel 7 are a display region that is half the right eye 20b and the left-eye image L2 of the display panel 3 (in the case of FIG. 5, for the left eye). The display area YR on the right side of the image L2 is arranged on the line connecting the display area YL on the left side of the image L2 for the left eye in the case of FIG. 6, so half of the image L2 for the left eye is incident on the right eye 20b. To do.

  On the other hand, since the polarization control region 7b of the polarization control liquid crystal panel 7 is controlled to be in an ON state in which a voltage is applied to the electrode 7c (see FIG. 10) in the horizontal arrangement, the polarization control region 7b of the polarization control liquid crystal panel 7 is controlled. The polarization axis becomes invalid. Therefore, the light emitted from the polarization control region 6b of the phase difference plate 6 and incident on the polarization control region 7b of the polarization control liquid crystal panel 7 is emitted without changing the polarization axis, as shown in FIG. That is, the light emitted from the polarization control region 6b of the retardation plate 6 and emitted from the polarization control region 7b of the polarization control liquid crystal panel 7 has a polarization axis of about 165 ° when viewed from the observer 20 (see FIG. 5) side. Have The light emitted from the polarization control region 6b of the retardation plate 6 and emitted from the polarization control region 7b of the polarization control liquid crystal panel 7 is an example of “light having a sixth polarization axis” in the present invention. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° and is emitted from the polarizing plate 8. In this case, as shown in FIGS. 5 and 6, the polarization control region 6b of the phase difference plate 6 and the polarization control region 7b of the polarization control liquid crystal panel 7 are half the right eye 20b and the right-eye image R2 of the display panel 3. Since it is arranged on a line connecting the display area (in the case of FIG. 5, the display area XL on the left side of the right-eye image R2 and in the case of FIG. 6 the right-side display area XR), Half of the right-eye image R2 can be incident on the right eye 20b. Further, the polarization control region 6b of the phase difference plate 6 and the polarization control region 7b of the polarization control liquid crystal panel 7 are a display region that is half the left eye 20a and the left eye image L2 of the display panel 3 (in the case of FIG. The display area YR on the right side of the image L2 is arranged on a line connecting the display area YL on the left side of the image L2 for the left eye in the case of FIG. 6, so half of the image L2 for the left eye is incident on the left eye 20a. It becomes possible to do.

  As described above, the left-eye image L2 and the right-eye image R2 are incident on the left eye 20a and the right eye 20b, respectively, so that the observer 20 can see a three-dimensional image.

(Plane image display mode when placed vertically)
FIG. 13 is a diagram showing a state in which an observer looks at the display panel from above when displaying a planar image when the display panel according to the embodiment of the present invention shown in FIG. 1 is arranged vertically. FIG. 14 is a view for explaining a planar image display method when the display panel shown in FIG. 1 according to an embodiment of the present invention is vertically arranged and horizontally arranged. Next, with reference to FIG. 13 and FIG. 14, a planar image display method when the display panel 3 is vertically arranged according to an embodiment of the present invention will be described.

  First, the light emitted from the backlight 2 (see FIG. 13) is light having a polarization axis of about 135 ° when viewed from the observer 20 (see FIG. 13) side by the polarizing plate 4, as shown in FIG. Only transparent. Further, the light emitted from the polarizing plate 4 enters the display panel 3. In this case, as shown in FIG. 13, the planar image S <b> 1 is displayed on the display panel 3. Further, as shown in FIG. 14, the light incident on the display panel 3 is emitted by the display panel 3 with the polarization axis changed by 90 °. That is, the light transmitted through the display panel 3 has a polarization axis with a polarization axis of about 45 °. And the light radiate | emitted from the display panel 3 permeate | transmits the polarizing plate 5 which has a polarization axis of about 45 degrees. The light transmitted through the polarizing plate 5 enters the polarization control region 6 a or 6 b of the phase difference plate 6.

  In this embodiment, the light incident on the phase difference plate 6 has a polarization axis of about 45 ° when viewed from the observer 20 (see FIG. 13) side. Therefore, as shown in FIG. The light incident on the polarization control region 6a of the plate 6 is changed to a linearly symmetric polarization axis with respect to the polarization axis of about 75 ° of the polarization control region 6a of the phase difference plate 6 and is transmitted. That is, the light emitted from the polarization control region 6a has a polarization axis of about 105 °. Further, since the polarization control liquid crystal panel 7 is controlled to be in the ON state, the polarization axis of the polarization control liquid crystal panel 7 becomes invalid. Thereby, the light incident on the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 is emitted from the polarization control liquid crystal panel 7 without changing the polarization axis. That is, the light emitted from the polarization control liquid crystal panel 7 has a polarization axis of about 105 °. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° and is emitted from the polarizing plate 8. The planar image S1 of the display panel 3 corresponding to the polarization control region 6a is incident on the left eye 20a and the right eye 20b by the light emitted from the polarizing plate 8 through the polarization control region 6a.

  On the other hand, as shown in FIG. 14, the light incident on the polarization control region 6b of the phase difference plate 6 changes to a polarization axis that is symmetric with respect to the polarization axis of about 15 ° of the polarization control region 6b of the phase difference plate 6. To be transparent. That is, the light emitted from the polarization control region 6b has a polarization axis of about 165 ° when viewed from the observer 20 (see FIG. 13) side. Further, since the polarization control liquid crystal panel 7 is controlled to be in the ON state, the polarization axis of the polarization control liquid crystal panel 7 becomes invalid. Thus, the light emitted from the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 is emitted from the polarization control liquid crystal panel 7 without changing the polarization axis. That is, the light emitted from the polarization control liquid crystal panel 7 has a polarization axis of about 165 °. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° and is emitted from the polarizing plate 8. The planar image S1 of the display panel 3 corresponding to the polarization control region 6b is incident on the left eye 20a and the right eye 20b by the light emitted from the polarizing plate 8 through the polarization control region 6b.

  As described above, when the planar image S1 is incident on the left eye 20a and the right eye 20b, the observer 20 can view the planar image.

(Plane image display mode when placed in landscape orientation)
FIG. 15 is a diagram showing a state in which an observer looks at the display panel from above when displaying a planar image when the display panel according to the embodiment of the present invention shown in FIG. 1 is arranged horizontally. Next, with reference to FIG. 14 and FIG. 15, a planar image display method when the display panel 3 is horizontally disposed according to an embodiment of the present invention will be described.

  First, the light emitted from the backlight 2 (see FIG. 15) is light having a polarization axis of about 135 ° when viewed from the observer 20 (see FIG. 15) side by the polarizing plate 4, as shown in FIG. Only transparent. Further, the light emitted from the polarizing plate 4 enters the display panel 3. In this case, as shown in FIG. 15, the planar image S <b> 2 is displayed on the display panel 3. Further, as shown in FIG. 14, the light incident on the display panel 3 is emitted by the display panel 3 with the polarization axis changed by 90 °. That is, the light transmitted through the display panel 3 has a polarization axis with a polarization axis of about 45 °. And the light radiate | emitted from the display panel 3 permeate | transmits the polarizing plate 5 which has a polarization axis of about 45 degrees. The light transmitted through the polarizing plate 5 enters the polarization control region 6 a or 6 b of the phase difference plate 6.

  In the present embodiment, the light incident on the phase difference plate 6 has a polarization axis of about 45 ° when viewed from the observer 20 (see FIG. 15) side. Therefore, as shown in FIG. The light incident on the polarization control region 6a of the plate 6 is changed to a linearly symmetric polarization axis with respect to the polarization axis of about 75 ° of the polarization control region 6a of the phase difference plate 6 and is transmitted. That is, the light emitted from the polarization control region 6a has a polarization axis of about 105 °. Further, since the polarization control liquid crystal panel 7 is controlled to be in the ON state, the polarization axis of the polarization control liquid crystal panel 7 becomes invalid. Thereby, the light incident on the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 is emitted from the polarization control liquid crystal panel 7 without changing the polarization axis. That is, the light emitted from the polarization control liquid crystal panel 7 has a polarization axis of about 105 °. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° and is emitted from the polarizing plate 8. The planar image S2 of the display panel 3 corresponding to the polarization control region 6a is incident on the left eye 20a and the right eye 20b by the light emitted from the polarizing plate 8 through the polarization control region 6a.

  On the other hand, as shown in FIG. 14, the light incident on the polarization control region 6b of the phase difference plate 6 changes to a polarization axis that is symmetric with respect to the polarization axis of about 15 ° of the polarization control region 6b of the phase difference plate 6. To be transparent. That is, the light emitted from the polarization control region 6b has a polarization axis of about 165 ° when viewed from the observer 20 (see FIG. 15) side. Further, since the polarization control liquid crystal panel 7 is controlled to be in the ON state, the polarization axis of the polarization control liquid crystal panel 7 becomes invalid. Thus, the light emitted from the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 is emitted from the polarization control liquid crystal panel 7 without changing the polarization axis. That is, the light emitted from the polarization control liquid crystal panel 7 has a polarization axis of about 165 °. Thereafter, the light emitted from the polarization control liquid crystal panel 7 is changed to a polarization axis of about 45 ° and is emitted from the polarizing plate 8. The plane image S2 of the display panel 3 corresponding to the polarization control region 6b is incident on the left eye 20a and the right eye 20b by the light emitted from the polarizing plate 8 through the polarization control region 6b.

  As described above, when the planar image S2 is incident on the left eye 20a and the right eye 20b, the observer 20 can view the planar image.

(Effect of this embodiment)
In the present embodiment, as described above, the retardation plate 6 and the polarization control liquid crystal panel 7 are provided, and the display panel 3 is transmitted in the polarization control region 6b of the retardation plate 6 in a state in which the display panel 3 is arranged in the vertical direction. Polarization control is performed in a state where the left-eye image L1 and the right-eye image R1 are incident on the left eye 20a and the right eye 20b by the light to provide a stereoscopic image to the observer 20 and the display panel 3 is disposed sideways By providing the left eye image L2 and the right eye image R2 to the left eye 20a and the right eye 20b, respectively, by the light transmitted through the polarization control region 7b of the liquid crystal panel 7, a stereoscopic image is provided to the viewer 20, thereby the display panel 3 A stereoscopic image can be provided to the observer 20 in both cases where the camera is arranged vertically and horizontally.

  Further, in the present embodiment, the retardation plate 6 is provided with a plurality of polarization control regions 6a and 6b, and the plurality of polarization control regions 6a and 6b are arranged in a state in which the display panel 3 is arranged vertically. By arranging in a checkered shape (step shape) along the C direction that is an oblique direction intersecting with both the A direction and the B direction, a plurality of checkered shapes extending in the C direction (diagonal direction) are arranged. The polarization control regions 6a and 6b can cause the light transmitted through the polarization control region 6b to travel toward the left eye 20a and the right eye 20b in a state of being almost uniformly dispersed in the vertical direction and the horizontal direction. The decrease in resolution of the image for use L1 and the image for right eye R1 can be distributed in the vertical and horizontal directions. Thereby, a stereoscopic image with little image degradation can be provided to the observer 20.

  In the present embodiment, the polarization control regions 6a and 6b of the phase difference plate 6 are arranged for each of the dot regions 3a to 3c and 3e to 3g of the display panel 3, respectively, so that the dot regions 3a to 3c and By the polarization control regions 6a and 6b provided for each of 3e to 3g, the left eye image L1 and the right eye image R1 of the display panel 3 can be incident on the left eye 20a and the right eye 20b in a state of being subdivided. Thereby, a stereoscopic image with less image degradation can be provided to the observer 20.

  In the present embodiment, the display panel 3 is provided with dot regions 3a to 3c and 3e to 3g for displaying the three primary colors of light, and dots for displaying the three primary colors of the light of the display panel 3 respectively. By arranging the regions 3a to 3c and 3e to 3g so as to be substantially perpendicular to the direction connecting the left eye 20a and the right eye 20b in a state in which the display panel 3 is arranged horizontally, the left eye Dot regions 3a-3c and 3e for displaying the three primary colors of light so as to correspond to polarization control regions 7a and 7b provided so as to extend substantially perpendicular to the direction connecting 20a and right eye 20b. Since 3 g can be arranged, only the dot areas 3 a to 3 c and 3 e to 3 g displaying a predetermined primary color in the polarization control areas 7 a and 7 b Than placing can provide stereoscopic images having small image deterioration to the observer 20.

  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 embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, the polarization control regions 6a and 6b of the retardation plate 6 are provided corresponding to each dot region, and the widths of the polarization control regions 7a and 7b of the polarization control liquid crystal panel 7 correspond to the widths of the dot regions. However, the present invention is not limited to this, and the polarization control regions 6a and 6b of the phase difference plate 6 may be provided corresponding to each pixel region, for example, or a polarization control liquid crystal panel Seven polarization control regions 7a and 7b may be provided corresponding to the widths of the plurality of dot regions.

  Moreover, in the said embodiment, although the example which has arrange | positioned the polarization control area | regions 6a and 6b of the phase difference plate 6 in the checkered pattern (step shape) extended in C direction (diagonal direction) was shown, this invention is not limited to this, The polarization control regions 6a and 6b of the phase difference plate 6 may be arranged so as to extend in a predetermined direction (B direction in FIG. 9), or may be arranged so as to extend in an oblique direction other than a checkered shape (step shape). Also good. In the above embodiment, when providing stereoscopic images to a plurality of observers, the polarization control regions 6a and 6b of the phase difference plate 6 may be arranged so as to extend in an oblique direction that is not checkered (stepped). Good.

  Moreover, although the example which has arrange | positioned so that the polarization control area | regions 7a and 7b of the polarization control liquid crystal panel 7 may extend in a predetermined direction was shown in the said embodiment, this invention is not limited to this, Polarization of the polarization control liquid crystal panel 7 The control regions 7 a and 7 b may be arranged in a checkered pattern (stepped shape) extending in an oblique direction like the polarization control regions 6 a and 6 b of the phase difference plate 6.

  Moreover, in the said embodiment, the display panel 3 used the 90 degree TN system, and showed the example in which the polarizing plates 4 and 5 arrange | positioned so that it may oppose on both sides of the display panel 3 may have a mutually orthogonal polarization axis. However, the present invention is not limited to this, and other methods such as a VA (Vertical Alignment) method and an ECB (Electrically Controlled Birefringence) method may be used. In this case, for example, when the VA method is used, the polarizing plates 4 and 5 arranged so as to sandwich the display panel 3 are constituted by polarizing plates having the same polarization axis, and the display panel 3, the polarizing plates 4 and 5 The polarization axis of light corresponding to the image formed by the image display device may be set so as to correspond to the polarization axis.

  In the above embodiment, the polarization axes of the polarizing plates 4, 5, 8, the polarization control regions 6 a, 6 b of the retardation plate 6 and the polarization control liquid crystal panel 7 are about 135 °, about 45 °, and about 45 °, respectively. However, the present invention is not limited to this, and the polarization control regions 6a and 6b of the polarizing plates 4, 5 and 8, the retardation plate 6 and the polarization are shown. The polarization axis of the control liquid crystal panel 7 may be set to a value other than the above value. In this case, by optimizing the polarization axis, when the display panel is arranged horizontally, the polarization control region 6b of the retardation plate 6 shown in FIG. It is preferable to reduce the amount of light transmitted through 7a and the polarizing plate 8. Accordingly, it is possible to reduce the amount of light of the right-eye image incident on the left eye of the observer and reduce the amount of light of the left-eye image incident on the observer's right eye.

  Further, in the above embodiment, the polarization control liquid crystal panel 7 is separated from the distance (W1) from the center portion in the thickness direction of the display panel 3 to the surface of the retardation plate 6 on the viewer 20 side, and in the thickness direction of the display panel 3. The distance (W2) from the central portion to the surface of the polarization control liquid crystal panel 7 on the viewer 20 side is about 1 which is the same as the aspect ratio (about 1: 3) of the dot regions 3a to 3c and 3e to 3g of the display panel 3. However, the present invention is not limited to this, and the distance (W1) and the distance (W2) are set to the dot areas 3a to 3c and 3e to 3g of the display panel 3. You may arrange | position by the ratio different from an aspect ratio.

  Further, in the above embodiment, an example in which the display panel is arranged vertically and horizontally and a stereoscopic image is provided to the viewer is shown. However, in the configuration of the above embodiment, when the display panel is arranged vertically, The right-eye image can be further suppressed from entering the observer's left eye, and the left-eye image can be further suppressed from entering the observer's right eye, while the display panel is disposed sideways. In this case, a part of the image for the right eye is incident on the left eye of the observer and a part of the image for the left eye is incident on the right eye of the observer. It is desirable to provide a stereoscopic image to the viewer.

1 is an exploded perspective view showing an image display device according to an embodiment of the present invention. It is the figure which showed the display panel at the time of arranging the display panel by one Embodiment of this invention shown in FIG. 1 vertically, a phase difference plate, and a polarization control liquid crystal panel. It is the figure which showed the state which the observer looked at the display panel at the time of the stereoscopic image display at the time of arrange | positioning the display panel by one Embodiment of this invention shown in FIG. 1 vertically. It is the figure which showed the display panel at the time of arrange | positioning the display panel by one Embodiment of this invention shown in FIG. 1 sideways, a phase difference plate, and a polarization control liquid crystal panel. FIG. 4 shows a state in which the viewer looks at the display panel from above along the line 100-100 in FIG. 4 when displaying a stereoscopic image when the display panel according to the embodiment of the present invention shown in FIG. It is a figure. FIG. 4 shows a state in which the viewer looks at the display panel from above along the line 200-200 in FIG. 4 when displaying a stereoscopic image when the display panel according to the embodiment of the present invention shown in FIG. It is a figure. It is the elements on larger scale of the display panel at the time of arrange | positioning the display panel of the image display apparatus by one Embodiment of this invention shown in FIG. 1 vertically. It is the elements on larger scale of the display panel at the time of arrange | positioning the display panel of the image display apparatus by one Embodiment of this invention shown in FIG. 1 horizontally. It is the elements on larger scale of the phase difference plate of the image display apparatus by one Embodiment of this invention shown in FIG. FIG. 2 is a partial enlarged view of a polarization control liquid crystal panel according to an embodiment of the present invention shown in FIG. 1. FIG. 3 is a diagram for explaining a stereoscopic image display method when the display panel according to the embodiment of the present invention shown in FIG. 1 is vertically arranged. FIG. 3 is a diagram for explaining a stereoscopic image display method when the display panel according to the embodiment of the present invention shown in FIG. It is the figure which showed the state which the observer looked at the display panel at the time of the planar image display at the time of arrange | positioning the display panel by one Embodiment of this invention shown in FIG. 1 vertically. FIG. 2 is a diagram for explaining a planar image display method when the display panel according to the embodiment of the present invention shown in FIG. 1 is arranged vertically and horizontally. It is the figure which showed the state which the observer looked at the display panel at the time of the plane image display at the time of arranging the display panel by one Embodiment of this invention shown in FIG. 1 horizontally. It is a top view for demonstrating the principle of the stereo image display apparatus by an example of the past.

Explanation of symbols

1 Image display device 2 Backlight (light source)
3 Display Panel 3a-3c, 3e-3g Dot Area 6 Retardation Plate (First Polarization Axis Control Unit)
6a Polarization control region (first polarization control region)
6b Polarization control region (second polarization control region)
7. Polarization control liquid crystal panel (second polarization axis control means)
7a Polarization control region (third polarization control region)
7b Polarization control region (fourth polarization control region)
7c electrode 8 polarizing plate (second polarization axis control means)

Claims (2)

A left-eye image and a right-eye image are displayed on a display panel, and the left-eye image is advanced toward the left eye of the observer, and the right-eye image is advanced toward the observer's right eye. An image display method for displaying an image,
While the display panel is arranged in the first direction, the left-eye image and the right-eye image are displayed on the display panel in a checkered pattern, and light emitted from a light source is displayed on the left-eye image and the left-eye image. The right-eye image is incident on and emitted from the display panel displayed in a checkered pattern, and then separated into light having a first polarization axis and light having a second polarization axis. By emitting one of the light having the first polarization axis and the light having the second polarization axis as light corresponding to the image for the right eye, a stereoscopic image is displayed,
Displaying the left-eye image and the right-eye image along the first direction on the display panel in a state where the display panel is arranged in a second direction orthogonal to the first direction, While alternately displaying in the second direction, the light emitted from the light source is incident on and emitted from the display panel in which the left-eye image and the right-eye image are alternately displayed in the second direction. After that, it is separated into light having four different polarization axes, and light having two polarization axes corresponding to the left-eye image and the right-eye image out of the four different polarization axes is emitted. An image display method for displaying a stereoscopic image. With the display panel arranged in the first direction, the light having the first polarization axis and the light having the second polarization axis by the polarization axis control means having the polarization control regions arranged in a checkered pattern. One of the light having the first polarization axis and the light having the second polarization axis as light corresponding to the left-eye image and the right-eye image is separated into the left eye and the right eye of the observer To the observer by suppressing the other of the light having the first polarization axis and the light having the second polarization axis from moving toward the right eye and the left eye of the observer. The image display method according to claim 1, wherein a stereoscopic image is provided.

Images