JP2010171573A - Three-dimensional image display-imaging device, communication system, and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a three-dimensional image display-imaging device, a communication system, and a display device which can alleviate an inconsistency of a movement of an arm or the like of correspondents in a television-phone system using a three-dimensional image. <P>SOLUTION: In a three-dimensional image display-imaging device 1, image pickup devices 60R and 60L take an image of a correspondent PA located in front of a display range 20 from an observing point (right eye observing point VR and left eye observing point VL) set within the display range 20. Therefore, in a three-dimensional figure image PA1 displayed in a three-dimensional image display-imaging device 1 of another correspondent PB, a direction of a visual line and an arm position are in the same state where one correspondent PA actually faces to the other correspondent PB. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a three-dimensional image display / imaging device that displays and captures a three-dimensional image, a communication system using the three-dimensional image display / imaging device, and a display device used in the three-dimensional image display / imaging device. Is.

  2. Description of the Related Art Conventionally, a combination of a display device and an image sensor has been used as an image display / imaging device used in a communication system such as a videophone or a video conference system. In general, such an image display / imaging apparatus has a configuration in which an imaging element 60 is installed above the display apparatus 2 as shown in FIG. In such a communication system, a communicator watches an image displayed on the display device 2 instead of the image sensor 60 during communication. For this reason, an image in a state in which the line of sight of the other party of communication is directed downward is displayed on the display device 2, so that there is a problem that the communication parties cannot align their lines of sight.

  In order to solve such problems, Patent Document 1 discloses a light control glass that can be switched between a transmission state and a reflection state and a dynamic scattering that can be switched between a transmission state and a scattering state in a display / imaging device used in a videophone system. A technique has been proposed in which imaging is performed from the back side of the liquid crystal panel and the lines of sight of the communicators are matched by using a plate.

Japanese Patent No. 2859416

  On the other hand, a three-dimensional image display device that displays a three-dimensional object so that it pops out from the screen has been proposed, and it is considered that the presence can be further enhanced if such a three-dimensional image display device is used in a videophone system. For this purpose, it is necessary to add an image sensor to the three-dimensional image display device to obtain a three-dimensional image display / image pickup device.

  However, in a videophone system using a three-dimensional image, in addition to the problem of line-of-sight mismatch described in Patent Document 1, the movement of the communication partner displayed in the image does not match the actual position of the communication partner. There is a problem of feeling a great sense of incongruity. For example, when an image sensor is added to a three-dimensional image display device, an image sensor 60R for obtaining a right eye image and a left eye image are displayed below the display device 2 as shown by a dashed line in FIG. When the image pickup device 60L for obtaining is arranged, if an operation is performed such that the communicators shake hands, an uncomfortable feeling as shown in FIGS. 12B and 12C occurs. That is, as shown in FIG. 12B, even if one communicator PA extends his arm toward the three-dimensional person image PB1 of the other communicator PB, as shown in FIG. When the three-dimensional person image PA1 of one of the communication parties PA displayed on the 3D image display / imaging device 1 of the communication person PB is viewed, the communication person PA is in a direction that is significantly different from the direction in which the communication person PB actually extends his arm. It looks like my arms are stretched.

  Conventionally, there is no idea of a videophone system using a three-dimensional image regarding such an event, so that the solution is not disclosed in Patent Document 1, and the problem itself is not disclosed.

  In view of the above points, the subject of the present invention is a three-dimensional image display / imaging device that can alleviate inconsistencies in movement of arms of communicators in a communication system such as a videophone using three-dimensional images, It is an object of the present invention to provide a communication system using the three-dimensional image display / imaging device and a display device used for the three-dimensional image display / imaging device.

  In order to solve the above problems, a 3D image display / imaging device according to the present invention is provided with a display device having a display area for displaying a 3D image, and a 3D image of a subject located in front of the display area. First and second imaging elements that capture the parallax image of the first imaging element, the first imaging element captures an image of the subject viewed from a first position set on the display area, The second image pickup device picks up an image of the subject viewed from a second position set on the display area.

  In the present invention, one communicator located in front of the display area of the three-dimensional image display / imaging device is imaged by the first and second imaging elements, and thus the parallax for the three-dimensional image captured by the imaging element. The image of one communicator can be displayed as a three-dimensional image on the other communicator's three-dimensional image display / imaging device. At that time, in the three-dimensional image display / imaging apparatus, the imaging element captures an image of one communicator positioned in front of the display area as viewed from the viewpoint set in the display area. For this reason, in the 3D image displayed on the 3D image display / imaging device of the communication partner, in addition to the direction of the line of sight, the actual arm position matches the arm position of the communication partner image or It almost agrees. For this reason, in a communication system such as a videophone using a three-dimensional image, it is possible to project a three-dimensional image without a sense of incongruity.

  In the present invention, it is preferable that the first position and the second position are set to symmetrical positions around a vertical line that bisects the display region into left and right. Usually, in the display area of the three-dimensional image display / imaging device, the image of the communication partner is displayed at a substantially central position in the left-right direction. For this reason, if the first position and the second position are set to symmetrical positions around a vertical line that bisects the display area in the left and right directions, the 3D image display / imaging apparatus has 3 communication partners. The three-dimensional image is displayed with a natural feeling, and when the communication partner moves his / her arm, the relationship between the position of the communication partner's arm in the three-dimensional image and the actual position of his / her arm is natural.

  In the present invention, it is preferable that the first position and the second position are set at positions shifted upward from a horizontal line that bisects the display region into two equal parts. Usually, in the display area of the three-dimensional image display / imaging device, the eyes of the communication partner are displayed at a position slightly above the center in the vertical direction. Therefore, if the right eye viewpoint and the left eye viewpoint are set slightly above the display area, the 3D image of the communication partner is displayed with a natural feeling on the 3D image display / imaging device, and the communication partner moves his / her arm. In this case, the relationship between the position of the arm of the communication partner in the three-dimensional image and the actual position of his / her arm is natural.

  In the present invention, it is preferable that the first position and the second position are set at positions that overlap with a three-dimensional human image displayed as the three-dimensional image in the display area. With this configuration, the 3D image display / imaging device displays the 3D image of the communication partner with a natural feeling, and when the communication partner moves the arm, the communication partner's arm in the 3D image is displayed. The relationship between the position and the actual position of my arm is natural.

  In the present invention, it is preferable that the first position is set to a position overlapping the right eye of the three-dimensional human image, and the second position is set to a position overlapping the left eye of the three-dimensional human image. . With this configuration, the 3D image display / imaging device displays the 3D image of the communication partner with a natural feeling, and when the communication partner moves the arm, the communication partner's arm in the 3D image is displayed. The relationship between the position and the actual position of my arm is natural.

  In the present invention, the imaging device may employ a configuration for imaging the subject from the back of the display area. By adopting such a configuration, the optical path can be simplified, so that the three-dimensional image display / imaging apparatus can be reduced in size.

  In the present invention, one element of the display area and the image sensor is disposed at a position facing the subject, and the other element is disposed at a position shifted from the position facing the subject, A half mirror is disposed between the subject and the one element to separate an optical path connecting the subject and the other element from an optical path connecting the subject and the one element. Can be adopted. If such a configuration is adopted, an imaging optical path is not secured in the display area. Therefore, even if the viewpoint on the display area is set to any position on the display area, the quality of the image is not deteriorated. Therefore, the viewpoint of the imaging optical path is set to the optimum position on the display area, for example, the right eye viewpoint is set to a position overlapping the right eye of the 3D human image, and the left eye viewpoint is set to a position overlapping the left eye of the 3D human image. be able to.

  In the present invention, as the display device, a direct-view display device having a display panel constituting the display area can be used. For example, as the display device, a liquid crystal display device including a liquid crystal panel as the display panel can be used. In the present invention, as the display device, an organic electroluminescence display device including an organic electroluminescence panel as the display panel, a plasma display device including a plasma display panel as the display panel, and the like can be used.

  When such a direct-view display device is used, a fixed barrier method, a variable barrier method, a lenticular lens method, a polarizing filter method, or the like can be used to display a three-dimensional image. When the fixed barrier method is employed, the display device includes a parallax barrier that covers the display area on the front side. When the variable barrier method is employed, the display device includes a variable barrier device that is disposed in a state of covering the display region on the front side, and the variable barrier device includes a transmission state that transmits incident light, and the display region. A barrier state displaying overlapping parallax barriers is executed. When the lenticular lens method is employed, the display device includes a lenticular lens sheet that covers the display area on the front side. When the polarization filter method is adopted, the display device includes a polarization filter that covers the display area on the front side, and the polarization filter is arranged in correspondence with the odd-numbered columns in the horizontal pixel arrangement of the display panel. A first micro-polarizing element and a second micro-polarizing element arranged corresponding to an even number column in the pixel arrangement, and pass through the first micro-polarizing element and the second micro-polarizing element. It has a configuration in which the polarization direction of light is different.

  In the present invention, as the display device, a projection type display device including a projection member that constitutes the display area and a projector that projects and displays a three-dimensional image on the projection member can also be used. As such a projection display device, as the projector, one projector that alternately projects the right-eye image light and the left-eye image light, or right-eye image light and left-eye image light are emitted every other line. It is possible to employ a configuration including one projector that performs the above-described process. The projection display device includes a pair of right and left projectors that project right-eye image light and left-eye image light as the projector, and the polarization directions of the right-eye image light and the left-eye image light are different. A configuration can be employed.

  The three-dimensional image display / imaging device to which the present invention is applied can be used in a communication system in which three-dimensional image display / imaging devices are connected to a second display device via a line. In this case, an image captured by the image sensor of the three-dimensional image display / imaging device is displayed as a three-dimensional image by the second display device.

  The three-dimensional image display / imaging apparatus to which the present invention is applied can be used in a communication system in which three-dimensional image display / imaging apparatuses are connected to each other via a line. In this case, between the 3D image display / imaging devices, an image captured by the imaging element of one 3D image display / imaging device is displayed by the display device of the other 3D image display / imaging device. An image displayed as a three-dimensional image and captured by the image sensor of the other three-dimensional image display / imaging device is displayed as a three-dimensional image by the display device of one of the three-dimensional image display / imaging devices.

  In the communication system of the present invention, the three-dimensional image display / imaging device includes a microphone and a speaker, and the speaker of one of the three-dimensional image display / imaging devices is between the three-dimensional image display / imaging devices. Is reproduced by the speaker of the other 3D image display / imaging apparatus, and the audio input to the speaker of the other 3D image display / imaging apparatus is reproduced by the other 3D image display / imaging apparatus. Played by the speaker.

  In the present invention, when the imaging device adopts a configuration in which the subject is imaged from the back of the display area, the display device has the following configuration.

  First, a display device according to the present invention includes a display panel having a display area for displaying a three-dimensional image, and the display area includes at least a three-dimensional display arranged on the back side of the display area of the display panel. An imaging optical path is configured when imaging an object located in front of the display area by an imaging device for imaging.

  A display device according to another aspect of the present invention includes a liquid crystal panel having a display area for displaying a three-dimensional image, a light guide plate disposed opposite to the back side of the liquid crystal panel, and light to the light guide plate. A backlight device including a backlight light source to be supplied, and at least a three-dimensional image capturing element disposed on the back side of the display area in front of the display area in the display area. An imaging optical path is configured when imaging a positioned subject, and a hole or a translucent portion for imaging the subject is configured in the light guide plate through the imaging optical path.

  A display device according to another aspect of the present invention includes a liquid crystal panel having a display area for displaying a three-dimensional image, a light guide plate disposed opposite to the back side of the liquid crystal panel, and light to the light guide plate. A backlight device including a backlight light source to be supplied, and the display area includes at least a back surface of an area overlapping with the display area in the light guide plate. When imaging a subject located in front of the display area, an imaging optical path is configured, and the light guide plate captures the subject through a light scattering mode in which light is emitted to the liquid crystal panel and the imaging optical path. And a translucent mode is executed. According to such a configuration, even when a configuration in which a subject is imaged from the back of the display area is employed, it is not necessary to employ a special structure for providing an imaging optical path and an imaging element with respect to the light guide plate. An image can be displayed.

  In addition, a display device according to another aspect of the present invention includes a projection member that forms a display area, and a projector that projects and displays a three-dimensional image on the display area of the projection member, and the projection target The member includes a light-transmitting portion that can image a subject located in front of the projection member from an imaging element for capturing a three-dimensional image arranged on the back side of the projection member. .

It is explanatory drawing of the three-dimensional image display and imaging device which concerns on Embodiment 1 of this invention, and a communication system. FIG. 3 is an explanatory diagram of a liquid crystal display device used as the display device 2 in the three-dimensional image display / imaging device according to Embodiment 1 of the present invention. It is explanatory drawing of the backlight apparatus used for the display apparatus shown in FIG. It is explanatory drawing of the light-guide plate of the backlight apparatus used for the display apparatus shown in FIG. It is explanatory drawing of another liquid crystal display device used as a display apparatus in the three-dimensional image display and imaging device which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement of the backlight apparatus used for the display apparatus shown to Fig.5 (a). It is explanatory drawing of the optical member for displaying a three-dimensional image in the display apparatus used for the three-dimensional image display and imaging device shown in FIG. It is explanatory drawing of the three-dimensional image display and imaging device which concerns on Embodiment 2 of this invention. It is explanatory drawing of the optical member for displaying a three-dimensional image in the display apparatus used for the three-dimensional image display and imaging device shown in FIG. It is explanatory drawing of the three-dimensional image display and imaging device which concerns on Embodiment 3 of this invention. It is explanatory drawing of the electronic device carrying the three-dimensional image display and imaging device to which this invention is applied. It is explanatory drawing of the three-dimensional image display and imaging device which concerns on the comparative example of this invention, and a communication system.

  Embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals are given to the corresponding portions so that the correspondence with the configuration described with reference to FIG. 12 can be easily understood.

[Embodiment 1]
(overall structure)
FIG. 1 is an explanatory diagram of a three-dimensional image display / imaging apparatus and a communication system according to Embodiment 1 of the present invention. FIGS. 1 (a), (b), and (c) are respectively three-dimensional image displays. FIG. 4 is an explanatory diagram of an imaging device, an explanatory diagram showing a state of one communicator of a communication system using the three-dimensional image display / imaging device, and an explanatory diagram showing a state of the other communicator.

  In FIG. 1, a three-dimensional image display / imaging device 1 displays a display device 2 having a display area 20 for displaying a three-dimensional image and a subject (communications PA, PB) positioned in front of the display area 20 in three dimensions. It has image sensors 60R and 60L for the right eye and the left eye that capture images. In this embodiment, the display device 2 is a direct-view type display device provided with a display panel 100. As the display device 2, a liquid crystal display device provided with a liquid crystal panel as the display panel 100, or an organic electroluminescence as the display panel 100. An organic electroluminescence display device including a panel can be used. As the image sensors 60R and 60L, for example, a CCD, a CMOS, or the like can be used.

  In the present embodiment, the right-eye and left-eye imaging devices 60R and 60L are both arranged on the back side of the display area 20 of the display panel 100, and the subject is positioned in front of the display area 20 via the display panel 100. (Communicators PA, PB) are imaged. Accordingly, the image sensor 60R for the right eye captures an image of the subject viewed from the right eye viewpoint VR (first position) set on the display area 20, and the image sensor 60L for the left eye is set on the display area. An image of the subject viewed from the left eye viewpoint VL (second position) is taken.

  The three-dimensional image display / imaging apparatus 1 configured as described above is used in a communication system such as a videophone system connected via a line 3. For this reason, between the three-dimensional image display / imaging devices 1, the images captured by the imaging elements 60 </ b> R and 60 </ b> L of the three-dimensional image display / imaging device 1 of one communicator PA are the three-dimensional images of the other communicator PB. The image is displayed as a three-dimensional human image PA1 by the display device 2 of the image display / imaging device 1. In addition, an image captured by the imaging elements 60R and 60L of the other communication person PB's 3D image display / imaging apparatus 1 is converted into a 3D human image by the display apparatus 2 of the 3D image display / imaging apparatus of one communication party PA. Displayed as PB1.

  The three-dimensional image display / imaging device 1 includes a microphone and a speaker (not shown). Therefore, between the 3D image display / imaging devices 1, the voice input to the speaker of the 3D image display / imaging device 1 of one communicator PA is displayed and captured by the other communicator PB. It is reproduced by the speaker of the device 1. In addition, the voice input to the speaker of the other communicator PB's 3D image display / imaging device 1 is reproduced by the speaker of the 3D image display / imaging device 1 of one communicator PA.

(Viewpoint position)
In the three-dimensional image display / imaging apparatus 1 configured as described above, in the present embodiment, the right eye viewpoint VR and the left eye viewpoint VL are set at symmetrical positions around a vertical line 20v that bisects the display area 20 into left and right. ing. The right-eye viewpoint VR and the left-eye viewpoint VL are set at positions shifted upward from a horizontal line 20h that divides the display area 20 into two equal parts, and are displayed as three-dimensional images of the communication partner displayed in the display area 20 as a three-dimensional image. It is set at a height position substantially the same as the eyes of the images PA1 and PB1.

  Here, the right eye viewpoint VR and the left eye viewpoint VL are preferably set at positions that overlap with the three-dimensional person images PA1 and PB1 displayed in the display area 20, and the right eye viewpoint VR and the left eye viewpoint VL are displayed in the display area 20. Is preferably set at a position overlapping the right eye and the left face of the three-dimensional person images PA1 and PB1 displayed in FIG. However, when the imaging optical paths of the imaging elements 60R and 60L are secured with respect to the display area 20, the display quality deteriorates in the portion corresponding to the imaging optical path. Therefore, in this embodiment, the right eye viewpoint VR and the left eye viewpoint VL are set at positions shifted from the three-dimensional person images PA1 and PB1.

(Main effects of this form)
In the 3D image display / imaging apparatus 1 configured as described above, in the 3D image display / imaging apparatus 1 of one communicator PA, the image sensors 60R and 60L are one communicator positioned in front of the display area 20. A parallax image obtained by viewing PA from the first position and the second position (the right eye viewpoint VR and the left eye viewpoint VL) set in the display area 20 is captured. For this reason, in the 3D human image PA1 displayed on the 3D image display / imaging device 1 of the other communicator PB, the direction of the line of sight, the position of the arm, etc. are different from the other communicator PB. It is in the same state as actually meeting.

  Such processing is similarly performed in the other communicator's three-dimensional image display / imaging device. That is, in the three-dimensional image display / imaging device 1 of the other communicator PB, the imaging elements 60R and 60L have the viewpoint (right eye) set in the display area 20 with the other communicator PB positioned in front of the display area 20. A parallax image viewed from the viewpoint VR and the left eye viewpoint VL) is captured. Therefore, in the three-dimensional human image PB1 displayed on the three-dimensional image display / imaging device 1 of one communicator PA, the direction of the line of sight, the position of the arm, etc. It is in the same state as actually meeting.

  Therefore, when one communicator PA and the other communicator PB perform an operation of extending their arms toward the three-dimensional person images PA1 and PB1, the actual positions of the arms of the one communicator PA1. And the position of the arm in the three-dimensional person image PB1 of the other communicator PB substantially match. Further, the actual position of the arm of the other communicator PB and the position of the arm of the one communicator PA in the three-dimensional person image PA1 substantially coincide. For this reason, two-way communication with a three-dimensional image without a sense of incongruity can be performed.

  Further, in the three-dimensional image display / imaging apparatus 1 of the present embodiment, the right eye viewpoint VR and the left eye viewpoint VL are set at symmetrical positions around a vertical line 20v that bisects the display area 20 to the left and right. Usually, in the display area 20 of the three-dimensional image display / imaging device 1, the image of the communication partner is displayed at a substantially central position in the left-right direction. For this reason, if the right eye viewpoint VR and the left eye viewpoint VL are set to symmetrical positions around a vertical line that bisects the display area 20 to the left and right, the three-dimensional image display / imaging apparatus 1 has three communication partners. The three-dimensional image is displayed with a natural feeling, and when the communication partner moves his / her arm, the relationship between the position of the communication partner's arm in the three-dimensional image and the actual position of his / her arm is natural.

  In the three-dimensional image display / imaging device 1 of the present embodiment, the right eye viewpoint VR and the left eye viewpoint VL are set slightly above the horizontal line 20h that divides the display area 20 into two equal parts. Usually, in the display area 20 of the three-dimensional image display / imaging device 1, the eyes of the communication partner are displayed at a position slightly above the center in the vertical direction. Accordingly, if the right eye viewpoint VR and the left eye viewpoint VL are set slightly above the display area 20, the 3D image of the communication partner is displayed with a natural feeling on the 3D image display / imaging device 1, and the communication partner is displayed. When the arm moves, the relationship between the position of the arm of the communication partner in the three-dimensional image and the actual position of his / her arm is natural.

  Further, the right eye viewpoint VR and the left eye viewpoint VL are set to a position overlapping the 3D human image displayed as a 3D image, preferably the right eye viewpoint VR is set to a position overlapping the right eye of the 3D human image, and the left eye viewpoint VL is set to 3 If the position is set so as to overlap the left eye of the three-dimensional human image, the sense of discomfort between the position of the arm of the communication partner in the three-dimensional image and the actual position of the user's own arm can be largely eliminated.

(Specific configuration example 1 of the display device 2)
FIG. 2 is an explanatory diagram of a liquid crystal display device used as the display device 2 in the three-dimensional image display / imaging device 1 according to Embodiment 1 of the present invention, and FIGS. It is explanatory drawing of a liquid crystal display device, and a block diagram which shows an electric structure.

  A display device 2 shown in FIG. 2A is a liquid crystal display device including a liquid crystal panel 120 as the display panel 100 and a backlight device 150 arranged on the back side of the display area 20 of the liquid crystal panel 120.

  The liquid crystal panel 120 has a structure in which a pair of substrates 101 and 102 are bonded to each other with a sealant 103 interposed therebetween, and a liquid crystal 104 is sealed between the substrates 101 and 102. A pixel electrode 105 is formed for each sub-pixel of one dot in the display area 20 on the inner surface of the substrate 101. On the inner surface of the substrate 102, a colored layer 106 of each color of RGB as a color filter, and a counter electrode 107 is formed. The colored layers 106 for each color of RGB are formed at positions corresponding to the pixel electrodes 105, and the counter electrode 107 is formed on the substantially entire surface of the substrate 102. Here, the liquid crystal panel 120 is a transmissive liquid crystal panel, and each of the pair of substrates 101 and 102 is made of a translucent substrate such as a glass substrate. Further, both the pixel electrode 105 and the counter electrode 107 are made of a light-transmitting conductive film such as ITO. The liquid crystal panel 120 is an active matrix type liquid crystal panel and is driven to display by a known liquid crystal driving method. For example, a plurality of scanning lines and data lines are arranged in a matrix on the inner surface of the substrate 101 in the liquid crystal panel 120, and a switching element such as a TFT element is provided at a position corresponding to the intersection of each scanning line and each data line. In addition, subpixels are configured at positions corresponding to the intersections between the scanning lines and the data lines, and pixel electrodes 105 are provided for the respective subpixels to be electrically connected to the switching elements. Then, by electrically connecting one end of each data line and each scanning line to the data line driving circuit and the scanning line driving circuit, respectively, the data line driving circuit and the scanning line driving circuit are connected to each data line and each scanning line. Through this, a data signal and a scanning signal based on a control signal from an external control unit are supplied. With these configurations, based on a control signal supplied from an external control unit, a data signal corresponding to the display content is supplied to each data line, and the liquid crystal molecules between each pixel electrode 105 and the counter electrode 107 facing each other are supplied to the data lines. A display state is controlled for each sub-pixel by applying a voltage.

  The backlight device 150 includes a light guide plate 151 disposed on the back side of the liquid crystal panel 120 and a light source 152 that supplies light to the light guide plate 151. The light source 152 is, for example, an LED (Light Emitting Diode) or a cold cathode tube. In the backlight device 150, the light emitted from the light source 152 is incident from the end of the light guide plate 151, and then repeatedly reflected on both surfaces 151 e and 151 f of the light guide plate 151 to propagate inside the light guide plate 151. The light is emitted from the surface 151e facing the liquid crystal panel 120.

  The light incident on the liquid crystal panel 120 is light-modulated and emitted by the liquid crystal 104 whose orientation is controlled between the pixel electrode 105 and the counter electrode 107, and displays an image. Between the liquid crystal panel 120 and the light guide plate 151, a lower polarizing plate 112b, a diffusion plate 113, and a prism sheet 114 are disposed. In the liquid crystal panel 120, an upper polarizing plate 112 a is disposed on the outer surface of the substrate 102. Here, the display device 2 is set to either normally black or normally white depending on the orientation of the lower polarizing plate 112b and the upper polarizing plate 112a. When the display device 2 is configured as normally black, a pixel to which no electric field is applied between the pixel electrode 105 and the counter electrode 107 is darkly displayed, and an electric field is applied between the pixel electrode 105 and the counter electrode 107. The displayed pixels are brightly displayed. On the other hand, when the display device 2 is configured as normally white, a pixel to which no electric field is applied between the pixel electrode 105 and the counter electrode 107 is brightly displayed, and the pixel electrode 105 and the counter electrode 107 are not displayed. A pixel to which an electric field is applied is darkly displayed.

  On the front side of the liquid crystal panel 120, an optical member 190 for forming a three-dimensional image for forming a three-dimensional image by a fixed barrier method, a variable barrier method, a lenticular lens method, a polarizing filter method, etc., which will be described later, is disposed. Yes. The detailed configuration of the optical member 190 will be described later.

  When the liquid crystal device configured as described above is used as the display device 2 of the three-dimensional image display / imaging device shown in FIG. 1, it is necessary to secure an imaging optical path that enables imaging of the subject by the imaging elements 60R and 60L. is there. Therefore, in this embodiment, first, the light guide plate 151 is provided with two through holes 151h, and the image pickup devices 60R and 60L are disposed inside the two through holes 151h.

  Further, when displaying an image, the liquid crystal panel 120 modulates the light emitted from the backlight device 150 and displays a three-dimensional image. When the subject is imaged by the imaging elements 60R and 60L, the liquid crystal panel 120 The imaging optical path in a translucent state is configured in an area overlapping with the imaging ports 60a of the imaging elements 60R and 60L. More specifically, when the display device 2 is normally black, when the subject is imaged by the imaging elements 60R and 60L, the pixel electrode is located in a region overlapping the imaging port 60a of the imaging elements 60R and 60L in the liquid crystal panel 120. An electric field is applied between the counter electrode 107 and the counter electrode 107 to obtain a light-transmitting state. Therefore, the image sensors 60R and 60L are arranged on the back side of the liquid crystal panel 120, but can image a subject (communications PA and PB) facing the display area 20.

  In the liquid crystal panel 120 of the present embodiment, in a region overlapping with the imaging openings 60a of the image sensors 60R and 60L, normal light modulation is performed except when the subject is imaged by the image sensors 60R and 60L, and the image sensors 60R and 60L Only when the subject is imaged, the light transmitting state is set. It should be noted that in the region overlapping with the imaging openings 60a of the image sensors 60R and 60L, a completely light-shielded state (dark state) is obtained except when the subject is imaged by the image sensors 60R and 60L. It is good also as a translucent state (bright state) only when performing.

  When the display device 2 is normally white, the liquid crystal panel 120 is in a light-transmitting state without applying an electric field between the pixel electrode 105 and the counter electrode 107 in a region overlapping the imaging ports 60a of the image pickup devices 60R and 60L. . Therefore, the image sensors 60R and 60L are arranged on the back side of the liquid crystal panel 120, but can image a subject (communications PA and PB) facing the display area 20. From this point of view, when the display device 2 is normally white, a configuration in which the pixel electrode 105 is omitted in the area where the liquid crystal panel 120 overlaps with the imaging ports 60a of the imaging elements 60R and 60L may be employed. The portion where the pixel electrode 105 is omitted is always in a light transmitting state.

  In the liquid crystal panel 120 configured as described above, the positions of the photographing ports 60a of the image pickup devices 60R and 60L are located on the front side of the position of the exit-side surface 151e of the light guide plate 151. For this reason, even when the light propagating through the light guide plate 151 leaks into the through hole 151h, the leaked light does not enter from the imaging ports 60a of the image sensors 60R and 60L.

  In addition, in the light guide plate 151, the portions where the image pickup devices 60R and 60L are arranged are replaced with through holes 151h, as concave portions that are opened on the outgoing side surface 151e, or concave portions that are opened on the side 151f opposite to the outgoing side. Also good. In the light guide plate 151, even when a concave portion opened on the surface 151f opposite to the exit surface is formed, the bottom portion functions as an imaging light transmitting portion. However, if the portions where the image sensors 60R and 60L are arranged in the light guide plate 151 are through holes 151h, the wirings connected to the image sensors 60R and 60L can be drawn from the through holes 151h. In addition, in the light guide plate 151, when the portions where the image pickup devices 60R and 60L are arranged are concave portions, the concave portion opened on the outgoing surface 151e is compared with the concave portion opened on the opposite surface 151f to the outgoing surface. Thus, it is possible to prevent the imaging from being hindered by the light propagating through the light guide 151 in front of the imaging elements 60R and 60L.

  Further, in the display device 2 of the present embodiment, the diffusion plate 113 is provided with a through hole 113h at a position overlapping the imaging elements 60R and 60L. For this reason, the image sensors 60R and 60L can image the subject (communications PA and PB) without being affected by the scattering pattern formed on the diffusion plate 113. From this point of view, it is preferable that the prism sheet 114 also has a through hole in a region corresponding to the position of the imaging elements 60R and 60L.

  Further, in the configuration shown in FIG. 2A, the colored layer 106 is also formed on the portion of the substrate 102 where the imaging elements 60R and 60L are located, but the portion where the imaging elements 60R and 60L are located on the substrate 102. It is preferable to adopt a configuration in which the colored layer 106 is not formed or a configuration in which a colorless and transparent resin layer is formed instead of the colored layer 106. By adopting such a configuration, an image with excellent color tone can be obtained when a subject located in front of the display area 20 is imaged in color.

  Such a display device 2 generally has an electrical configuration shown in FIG. 2B, first, the control unit 140 is configured by a CPU (Central Processing Unit), for example, and is connected not only to the liquid crystal panel 120 but also to the imaging elements 60R and 60L and the storage unit 142. Information (imaging information) indicating the position and range of the imaging optical path in the liquid crystal panel 120 is recorded in the storage unit 142. Based on the imaging information, the control unit 140 sets a portion corresponding to the imaging optical path to a translucent mode in which light from the outside can be transmitted. As a result, the image sensors 60R and 60L can capture a subject on the opposite side of the liquid crystal panel 120.

  The imaging elements 60R and 60L capture the subject and supply it to the control unit 140 as an image signal. The control unit 140 generates image data based on the image signals from the image pickup devices 60R and 60L, and transmits the image data to the communication partner 3D image display / image pickup apparatus 1 via the line 3 described with reference to FIG. At the same time, the liquid crystal panel 120 is controlled based on the image data transmitted from the communication partner 3D image display / imaging device 1 to display an image. The above-described processing of the control unit 140 is performed by, for example, a program. Therefore, the storage unit 142 stores a program for performing the above-described processing.

(Configuration of the backlight device 150)
3 is an explanatory diagram of the backlight device 150 used in the display device 2 (liquid crystal display device) shown in FIG. 2. FIGS. 3 (a), 3 (b), and 3 (c) each show one light guide plate 151. FIG. FIG. 5 is an explanatory diagram when two light sources 152 are disposed, an explanatory diagram when light sources 152 are disposed on two sides of the light guide plate 151, and an explanatory diagram when light sources 152 are disposed on another two sides of the light guide plate 151.

  In the backlight device 150 described with reference to FIG. 2A, when the light source 152 is provided on the light guide plate 151, the light source is positioned at a position corresponding to one side of the light guide plate 151, as shown in FIG. 152 may be provided, but in this case, light propagating in the light guide plate 151 is blocked by the through hole 151h, and a shadow Sh of the through hole 151h is generated. Therefore, as shown in FIGS. 3B and 3C, it is preferable to provide the light source 152 at a position corresponding to two sides of the light guide plate 151. In the backlight device 150 shown in FIG. 3B, the light source 152 is disposed at a position corresponding to two sides facing each other on the left and right sides of the light guide plate 151. In the backlight device 150 shown in FIG. In 151, the light source 152 is arranged at a position corresponding to two opposite sides on the upper and lower sides.

  In this embodiment, the light guide plate 151 has two through holes 151h. Therefore, as shown in FIG. 3C, if the light source 152 is disposed on two sides located in the vertical direction orthogonal to the horizontal direction in which the two through holes 151h are arranged, the light source 152 is sandwiched between the two through holes 151h. It is possible to completely prevent the area from being shaded.

(Configuration example of light guide plate 151)
FIG. 4 is an explanatory diagram of the light guide plate 151 of the backlight device 150 used in the display device 2 (liquid crystal display device) shown in FIG. 2, and FIGS. 4 (a) and 4 (b) each show through the light guide plate 151. It is explanatory drawing at the time of making hole 151h into a taper shape, and explanatory drawing at the time of making the side wall of through-hole 151h into a light-shielding surface.

  As described with reference to FIG. 2 (a), the light guide plate 151 is provided with a through hole 151h. The imaging devices 60R and 60L provided in the through hole 151h have the positions of the imaging ports 60a guided. It is set to be higher than the position of the surface 151e on the light exit side of the optical plate 151. However, as shown in FIG. 4A, the through hole 151h may be formed as a tapered hole having a small opening area on the outgoing side surface 151e and a large opening area on the opposite side surface 151f. According to such a configuration, the position of the imaging port 60a of the image pickup devices 60R and 60L can be set lower than the position of the exit-side surface 151e of the light guide plate 151. That is, if the through hole 151h is tapered, light propagating in the light guide plate 151 is reflected by the wall surface of the through hole 151h, and therefore does not leak into the through hole 151h.

  Further, as shown in FIG. 4B, a light shielding material 151i may be provided on the inner wall of the through hole 151h. Even when such a configuration is adopted, the positions of the imaging ports 60a of the image sensors 60R and 60L can be set lower than the position of the exit-side surface 151e of the light guide plate 151. That is, if the through hole 151h is tapered, the light propagating through the light guide plate 151 is shielded by the wall surface of the through hole 151h, so that it does not leak into the through hole 151h.

(Specific configuration example 2 of the display device 2)
FIG. 5 is an explanatory diagram of another liquid crystal display device used as the display device 2 in the three-dimensional image display / imaging device 1 according to Embodiment 1 of the present invention, and FIGS. FIG. 2 is an explanatory diagram of a liquid crystal display device and a block diagram showing an electrical configuration. FIG. 6 is an explanatory diagram showing the operation of the backlight device used in the display device 2 shown in FIG. 5 (a). FIGS. 6 (a) and 6 (b) each show a state in which no voltage is applied to the transparent electrode. It is explanatory drawing and explanatory drawing of the state which applied the voltage to the transparent electrode. The basic configuration of the display device 2 shown in FIG. 5 is the same as the configuration described with reference to FIG. 2, and therefore, common portions are denoted by the same reference numerals and the description thereof is omitted. Omitted.

  Similar to the display device shown in FIG. 2A, the display device 2 shown in FIG. 5A has a liquid crystal panel 120 as the display panel 100 and a backlight disposed on the back side of the display area 20 of the liquid crystal panel 120. A liquid crystal display device including the device 170. The liquid crystal panel 120 has a structure in which a pair of substrates 101 and 102 are bonded to each other with a sealant 103 interposed therebetween, and a liquid crystal 104 is sealed between the substrates 101 and 102. The backlight device 170 includes a light guide plate 171 disposed on the back side of the liquid crystal panel 120, and a light source 152 that supplies light to the light guide plate 171. The light source 152 is, for example, an LED or a cold cathode tube. It is. In FIG. 5A, the light source 152 is disposed only on one end surface of the light guide plate 171, but it is preferable that the light source 152 is provided on both ends of the light guide plate 171.

  When the display device 2 is mounted on the three-dimensional image display / imaging device 1 described with reference to FIG. 1, the imaging elements 60 </ b> R and 60 </ b> L are arranged on the back side of the light guide plate 171. Here, both of the image sensors 60R and 60L are arranged on the back side of the display area 20 of the display panel 100, and subjects (communications PA and PB) positioned in front of the display area 20 via the display panel 100. Image. Accordingly, the image sensor 60R for the right eye captures an image of the subject viewed from the right eye viewpoint VR set on the display area 20, and the image sensor 60L for the left eye captures the object from the left eye viewpoint VL set on the display area. The image which saw the image is taken.

  In this embodiment, the light guide plate 171 is an optical element that switches between a light transmission mode that transmits light from the outside and a light emission mode (light scattering mode) that emits light from the light source 152 toward the liquid crystal panel 120. (Dynamic scattering plate). Accordingly, the light guide plate 171 is not provided with a through hole. The light guide plate 171 has a structure in which light-transmitting substrates 181 and 182 such as glass are bonded to each other, and a polymer dispersed liquid crystal (PDLC) 184 is sealed between the substrates 181 and 182.

  The polymer dispersed liquid crystal 184 has a structure in which a large number of small nematic liquid crystal droplets (diameter of several microns) are dispersed in a polymer. A transparent electrode 185 is formed on the inner surface of the substrate 181, and a transparent electrode 186 is formed on the inner surface of the substrate 182. Therefore, in the light guide plate 171, the polymer dispersed liquid crystal 184 has a structure sandwiched between a pair of transparent electrodes 185 and 186.

In such a light guide plate 171, as shown in FIG. 6A, when no voltage is applied between the transparent electrodes 185 and 186, the nematic liquid crystal molecules are oriented in a random direction. For this reason, the light guide plate 171 enters a light scattering state in which incident light is dispersed, scatters the light emitted from the light source 152, and emits the light toward the liquid crystal panel 120. (Light scattering mode)
On the other hand, as shown in FIG. 6B, when a voltage is applied between the transparent electrodes 185 and 186, the nematic liquid crystal molecules align in the direction of the electric field. Therefore, the polymer dispersed liquid crystal 184 becomes transparent. Therefore, since the light guide plate 171 is in a light transmissive state that transmits incident light, light from the outside can be transmitted and incident on the imaging elements 60R and 60L (translucent mode).

  According to such a configuration, even when a configuration in which a subject is imaged from the back surface of the display area 20 is employed, it is not necessary to employ a special structure for providing the imaging optical path and the imaging elements 60R and 60L with respect to the light guide plate 171. Therefore, a high quality image can be displayed.

  In the display device 2 of the present embodiment, as shown in FIG. 5B, the control unit 140 is connected to the liquid crystal panel 120, the image sensors 60R and 60L, and the storage unit 142, and also connected to the backlight device 170. Has been. The storage unit 142 stores imaging information indicating the position and range information of the imaging area on the liquid crystal panel 120.

  The controller 140 drives the light guide plate 171 in a time-sharing manner during a period in which the light guide plate 171 is in the light emission mode (light emission mode period / light scattering mode) and a period in which the light guide plate 171 is in the light transmission mode (light transmission mode period). Specifically, the control unit 140 performs control to apply a voltage between the transparent electrodes 185 and 186 in the light transmission mode period without applying a voltage between the transparent electrodes 185 and 186 in the light emission mode period.

  In the light transmission mode period, the control unit 140 controls the liquid crystal panel 120 to set the light transmission mode in which light from the outside is transmitted, and controls the imaging elements 60R and 60L to photograph the subject. More specifically, when the subject is imaged by the imaging elements 60R and 60L, the entire liquid crystal panel 120 is set in a light-transmitting state. In the case where an image of a subject is picked up by the image pickup devices 60R and 60L, a light-transmitting image pickup optical path may be configured only in a region of the liquid crystal panel 120 that overlaps the image pickup opening 60a of the image pickup devices 60R and 60L.

  Then, the control unit 140 generates image data based on the image signals from the image sensors 60R and 60L, and the communication partner's three-dimensional image display / imaging device 1 via the line 3 described with reference to FIG. And the liquid crystal panel 120 is controlled based on the image data transmitted from the 3D image display / imaging device 1 of the communication partner to display an image. The above-described processing of the control unit 140 is performed by a program stored in the storage unit 142, for example.

(Configuration of optical member 190 for three-dimensional image formation)
7 is an explanatory diagram of an optical member 190 (see FIGS. 2 and 5) for displaying a three-dimensional image on the display device 2 used in the three-dimensional image display / imaging device 1 shown in FIG. (A), (b), (c), (d) is an explanatory diagram of an optical member 190 for a lenticular lens system, an explanatory diagram of an optical member 190 for a fixed barrier system, and an optical member for a variable barrier system It is explanatory drawing of 190 and explanatory drawing of the optical member 190 for polarization filter systems.

  In the display device 2 described with reference to FIGS. 2 and 5, a lenticular lens method, a fixed barrier method, a variable barrier method, and a polarization filter method can be used to display a three-dimensional image.

  First, when the lenticular lens method is adopted, the display device 2 has a configuration in which the front side of the display region 20 is covered with a lenticular lens sheet 191 (optical member 190) shown in FIG. The lenticular lens sheet 191 is formed by forming a large number of minute convex lenses having a convex arc shape in cross section on the surface of a transparent resin sheet or the like, and the rows of convex lenses extend in the vertical direction of the liquid crystal panel 120. Accordingly, the image light emitted from the liquid crystal panel 120 behind the lenticular lens sheet 191 is refracted and emitted after being incident on each convex lens formed corresponding to the position of each pixel. At that time, by emitting display light in consideration of refraction from the liquid crystal panel 120, different image light can be emitted in different directions. Therefore, different image lights (right eye image light and left eye image light for three-dimensional image display) are transmitted to the left and right eyes of the communication parties PA and PB who are looking at the liquid crystal panel 120 via the lenticular lens sheet 191. Therefore, it is possible to display a three-dimensional image with the naked eye.

  Here, the lenticular lens sheet 191 is formed with imaging translucent portions 191a and 191b for imaging by the imaging elements 60R and 60L. The imaging translucent portions 191a and 191b are formed on the lenticular lens sheet 191. It consists of a formed through hole or flat part. Note that if the imaging light-transmitting portions 191a and 191b are shaped as through holes, attenuation of light reaching the imaging elements 60R and 60L can be prevented.

  When the fixed barrier method is employed, the display device 2 has a configuration in which the front side of the display region 20 is covered with a parallax barrier sheet 192 (optical member 190) illustrated in FIG. Here, on the parallax barrier sheet 192, a lattice-shaped light shielding pattern 192e (parallax barrier) is formed, and a fine slit 192f is formed by the light shielding pattern 192e. The slits 192f extend in the vertical direction of the liquid crystal panel 120. By using the parallax when viewed with the left and right eyes of the slit 192f, the left and right eyes of the communicators PA and PB in front of the liquid crystal panel 120 are used. Different image lights can be made to reach. Therefore, the left eye image and the right eye image are displayed on the liquid crystal panel 120 in consideration of the parallax from the left and right eye positions of each slit 192f, so that the left eye image and the right eye image are displayed on the left and right eyes of the observer. Each can be reached. Therefore, it is possible to display a three-dimensional image with the naked eye.

  The parallax barrier sheet 192 is formed with imaging translucent portions 192a and 192b for imaging by the imaging elements 60R and 60L, and the imaging translucent portions 192a and 192b are regions where the light shielding pattern 192e is not formed. Consists of.

  When the variable barrier method is employed, the display device 2 has a configuration in which the front side of the display region 20 is covered by the variable barrier device 193 (optical member 190) illustrated in FIG. In the variable barrier device 193, a transmission state in which incident light is transmitted and a barrier state in which the parallax barrier 193c is displayed in an area overlapping the display area 20 are executed. Therefore, in the transmissive state, it is possible to capture images with the image sensors 60R and 60L. For this reason, when the variable barrier device 193 is used, it is not necessary to form the imaging light transmitting part. Therefore, the three-dimensional image displayed in the display area 20 does not deteriorate due to the formation of the imaging translucent part.

  When the polarizing filter method is employed, the display device 2 is configured to cover the front side of the display region 20 with the polarizing filter 194 shown in FIG. In the polarizing filter 194, the first fine polarizing elements 194a arranged in correspondence with the odd-numbered columns in the horizontal pixel arrangement of the liquid crystal panel 120 (display panel 100), and arranged in correspondence with the even-numbered columns in the pixel arrangement. The second fine polarizing element 194b is provided, and the polarization directions of the light passing through the first fine polarizing element 194a and the second fine polarizing element 194b are different. Further, if the left-eye image is displayed on one of the odd-numbered and even-numbered pixel columns of the liquid crystal panel 120 and the right-eye image is displayed on the other, the left-eye image and the right-eye image are emitted as image lights having different polarizations. Is done. Accordingly, by viewing the liquid crystal panel 120 with polarized glasses having different polarization directions for the left and right eyes, the left eye image and the right eye image can be made to reach the left and right eyes, respectively, and three-dimensional image display is performed. Can do.

  Such a polarizing filter 194 has translucency. For this reason, when the polarizing filter 194 is used, it is not necessary to form an imaging light transmitting portion. Therefore, the three-dimensional image displayed in the display area 20 does not deteriorate due to the formation of the imaging translucent part.

[Embodiment 2]
FIG. 8 is an explanatory diagram of a three-dimensional image display / imaging device according to Embodiment 2 of the present invention, and FIGS. 8A and 8B each illustrate the case where the display device 2 faces the subject. It is explanatory drawing at the time of making image pick-up element 60R and 60L face a figure and a to-be-photographed object. FIG. 9 is an explanatory diagram of an optical member 190 for displaying a three-dimensional image on the display device 2 used in the three-dimensional image display / imaging device 1 shown in FIG. 8, and FIG. 9 (a), FIG. (C) and (d) are respectively an explanatory diagram of an optical member 190 for a lenticular lens system, an explanatory diagram of an optical member 190 for a fixed barrier system, an explanatory diagram of an optical member 190 for a variable barrier system, and a polarizing filter. It is explanatory drawing of the optical member 190 for a system.

  In this embodiment, as will be described below with reference to FIGS. 8A and 8B, one element of the display area 20 and the image sensors 60R and 60L is arranged at a position facing the subject. The other element is arranged at a position shifted from the position facing the subject. A half mirror 7 is disposed between the subject and one element to separate the optical path connecting the subject and the other element from the optical path connecting the subject and the one element.

  More specifically, in the three-dimensional image display / imaging device 1 shown in FIG. 8A, the display panel 100 (liquid crystal panel 120) of the display device 2 is the subject of the display device 2 and the imaging elements 60R and 60L. The image sensors 60R and 60L are arranged at positions shifted from the positions facing the subject while being arranged at positions facing the (communications PA and PB). In addition, a half mirror 7 is disposed between the subject and the display device 2 at an angle of 45 ° for separating the optical path connecting the subject and the imaging devices 60R and 60L from the optical path connecting the subject and the display device 2. ing.

  According to such a configuration, the communication parties PA and PB observe the image that has passed through the half mirror 7. The image sensors 60R and 60L capture images of the communication parties PA and PB reflected by the half mirror 7.

  In the three-dimensional image display / imaging device 1 shown in FIG. 8B, among the display device 2 and the imaging devices 60R and 60L, the imaging devices 60R and 60L are arranged at positions facing the subject (communication parties PA and PB). In addition, the display panel 100 (liquid crystal panel 120) of the display device 2 is arranged at a position shifted from the position facing the subject. Further, a half mirror 7 for separating the optical path connecting the subject and the display device 2 from the optical path connecting the subject and the imaging elements 60R and 60L between the subject and the imaging elements 60R and 60L is at an angle of 45 °. Has been placed.

  According to such a configuration, the communication parties PA and PB observe the image reflected by the half mirror 7. The image sensors 60R and 60L capture images of the communication parties PA and PB that have passed through the half mirror 7.

  According to this configuration, an imaging optical path is not secured in the display area 20. Therefore, the quality of the image is not deteriorated regardless of the position on the display area 20 when the viewpoint at the time of imaging with the imaging elements 60R and 60L is set. Therefore, the viewpoint of the imaging optical path is set to the optimum position on the display area 20 such that the right eye viewpoint is set to a position overlapping the right eye of the 3D human image, and the left eye viewpoint is set to a position overlapping the left eye of the 3D human image. can do.

  In the display device 2 used in the three-dimensional image display / imaging device 1 described with reference to FIG. 8, a lenticular lens method, a fixed barrier method, a variable barrier method, and a polarization filter method are also used when displaying a three-dimensional image. Can be used.

  First, when the lenticular lens method is adopted, the display device 2 has a configuration in which the front side of the display region 20 is covered with a lenticular lens sheet 191 (optical member 190) shown in FIG. However, the lenticular lens sheet 191 does not need to be formed with an imaging translucent part for imaging with the imaging elements 60R and 60L. Therefore, the three-dimensional image displayed in the display area 20 does not deteriorate due to the formation of the imaging translucent part.

  When the fixed barrier method is employed, the display device 2 has a configuration in which the front side of the display region 20 is covered with a parallax barrier sheet 192 (optical member 190) illustrated in FIG. Here, the parallax barrier sheet 192 is formed with a lattice-shaped light shielding pattern 192e (parallax barrier) and fine slits 192f. However, the parallax barrier sheet 192 is not formed with an imaging translucent part for imaging with the imaging elements 60R and 60L. Therefore, the three-dimensional image displayed in the display area 20 does not deteriorate due to the formation of the imaging translucent part.

  When the variable barrier method is employed, the display device 2 has a configuration in which the front side of the display region 20 is covered by the variable barrier device 193 (optical member 190) illustrated in FIG. In the variable barrier device 193, a transmission state in which incident light is transmitted and a barrier state in which the parallax barrier 193c is displayed in an area overlapping the display area 20 are executed. Therefore, in the transmissive state, it is possible to capture images with the image sensors 60R and 60L. When such a variable barrier device 193 is used, it is not necessary to form an imaging light transmitting portion. Therefore, the three-dimensional image displayed in the display area 20 does not deteriorate due to the formation of the imaging translucent part.

  When the polarizing filter method is employed, the display device 2 is configured to cover the front side of the display region 20 with the polarizing filter 194 shown in FIG. In the polarizing filter 194, the first fine polarizing elements 194a arranged in correspondence with the odd-numbered columns in the horizontal pixel arrangement of the liquid crystal panel 120 (display panel 100), and arranged in correspondence with the even-numbered columns in the pixel arrangement. The second fine polarizing element 194b is provided, and the polarization directions of the light passing through the first fine polarizing element 194a and the second fine polarizing element 194b are different. When such a polarizing filter 194 is used, it is not necessary to form an imaging translucent part. Therefore, the three-dimensional image displayed in the display area 20 does not deteriorate due to the formation of the imaging translucent part.

[Embodiment 3]
FIG. 10 is an explanatory diagram of a three-dimensional image display / imaging apparatus according to Embodiment 3 of the present invention, and FIGS. 10A and 10B are explanatory diagrams when two projectors are used, and It is explanatory drawing at the time of using one projector.

  As shown in FIGS. 10A and 10B, in the three-dimensional image display / imaging device 1 of the present embodiment, the display device 200 includes a projection member 8 such as a screen constituting the display region 20, and a projection member. 8 includes a projector 9 for projecting and displaying a three-dimensional image. In the display device 200, the subject (communications PA, PB) faces the display area 20 of the projection member 8, and the imaging elements 60 </ b> R and 60 </ b> R are arranged on the back surface of the projection member 8. For this reason, in the display area 20 of the projection member 8, imaging light transmission parts 8a and 8b for securing an imaging optical path are formed, and the right eye when the imaging light transmission parts 8a and 8b image the subject. The viewpoint VR and the left eye viewpoint VL are obtained.

  Among such three-dimensional image display / imaging devices 1, in the three-dimensional image display / imaging device 1 shown in FIG. 10A, as the projector 9, a right-side projector 9R that projects right-eye image light, and a left-eye A left-side projector 9L that projects image light for use is used. In addition, polarizing elements 91R and 91L having different polarization characteristics are arranged on the front side of the projector 9R and the projector 9L. For this reason, the polarization directions of the right-eye image light and the left-eye image light are different. In the three-dimensional image display / imaging device 1 having such a configuration, if an image displayed in the display area 20 is viewed using polarized glasses, it can be recognized as a three-dimensional image.

  Further, in the three-dimensional image display / imaging device 1 shown in FIG. 10B, a display device 200 including one projector 9 is used, and the projector 9 outputs right eye image light and left eye image light. Project alternately. Alternatively, the projector 9 emits right eye image light and left eye image light every other line. Therefore, if an image displayed in the display area 20 is viewed using glasses with a high-speed shutter such as the liquid crystal shutter glasses 95, it can be recognized as a three-dimensional image.

[Example of mounting on electronic devices]
Next, among the three-dimensional image display / imaging device 1 according to the above-described embodiment, the three-dimensional image display / imaging device 1 using the direct-view display device 2 according to the first embodiment is an electronic device illustrated in FIG. Can be mounted on equipment.

  FIG. 11A shows the configuration of a mobile personal computer provided with the display device 2. The personal computer 2000 includes the display device 2 and the main body 2010. The main body 2010 is provided with a power switch 2001 and a keyboard 2002. FIG. 11B shows a configuration of a mobile phone provided with the display panel 100. The cellular phone 3000 includes a plurality of operation buttons 3001, scroll buttons 3002, and the display panel 100. By operating the scroll button 3002, the screen displayed on the display panel 100 is scrolled. FIG. 11C shows the configuration of an information portable terminal (PDA: Personal Digital Assistants) on which the display panel 100 is mounted. The information portable terminal 4000 includes a plurality of operation buttons 4001, a power switch 4002, and the display panel 100. When the power switch 4002 is operated, various kinds of information such as an address book and a schedule book are displayed on the display panel 100.

1 .... 3D image display / imaging device, 2 .... display device, 7 .... half mirror, 8 .... projected member, 9 .... projector, 20 .... display area, 60R, 60L ..., imaging device, 100 ..Display panel, 120..Liquid crystal panel, 150, 170..Backlight device, 151,171..Light guide plate, 152..Light source, 190..Optical member for three-dimensional image display, PA, PB .. Communicator (subject), VL ·· Left eye view, VR · · Right eye view

Claims (15)

A display device having a display area for displaying a three-dimensional image;
First and second imaging elements that capture parallax images for a three-dimensional image of a subject located in front of the display area;
Have
The first image sensor captures an image of the subject viewed from a first position set on the display area;
The three-dimensional image display / imaging apparatus, wherein the second imaging element captures an image of the subject viewed from a second position set on the display area.   2. The three-dimensional image according to claim 1, wherein the first position and the second position are set to symmetrical positions around a vertical line that bisects the display area into left and right halves. Display / imaging device.   3. The three-dimensional image according to claim 1, wherein the first position and the second position are set to positions shifted upward from a horizontal line that bisects the display area in two. Image display / imaging device.   The said 1st position and the said 2nd position are set to the position which overlaps with the three-dimensional image displayed as the said three-dimensional image in the said display area. The three-dimensional image display / photographing device according to item.   5. The three-dimensional image display / imaging apparatus according to claim 1, wherein the imaging element images the subject from a back surface of the display area. One element of the display area and the image sensor is disposed at a position facing the subject, and the other element is disposed at a position shifted from the position facing the subject,
A half mirror is arranged between the subject and the one element to separate an optical path connecting the subject and the other element from an optical path connecting the subject and the one element. The three-dimensional image display / imaging device according to any one of claims 1 to 5, wherein   The three-dimensional image display / imaging device according to claim 5 or 6, wherein the display device is a direct-view display device having a display panel constituting the display area.   The said display apparatus is a projection type display apparatus provided with the to-be-projected member which comprises the said display area, and the projector which projects and displays a three-dimensional image on this to-be-projected member. 3D image display / imaging device. A communication system in which the 3D image display / imaging device according to any one of claims 1 to 8 and a second display device having a display area for displaying a 3D image are connected via a line. And
A communication system, wherein an image picked up by the image pickup device of the three-dimensional image display / image pickup device is displayed as a three-dimensional image by the second display device. A communication system in which the three-dimensional image display / imaging devices according to any one of claims 1 to 8 are connected via a line,
Between the three-dimensional image display / imaging devices, an image captured by the imaging element of one three-dimensional image display / imaging device is converted into a three-dimensional image by the display device of the other three-dimensional image display / imaging device. A communication system that is displayed and displayed as a three-dimensional image by the display device of one of the three-dimensional image display / imaging devices, the image captured by the imaging element of the other three-dimensional image display / imaging device. . The three-dimensional image display / imaging device includes a microphone and a speaker,
Between the three-dimensional image display / imaging devices, the sound input to the speaker of one three-dimensional image display / imaging device is reproduced by the speaker of the other three-dimensional image display / imaging device, and the other three 11. The communication system according to claim 10, wherein sound input to the speaker of the three-dimensional image display / imaging device is reproduced by the speaker of one of the three-dimensional image display / imaging devices. A display panel having a display area for displaying a three-dimensional image;
In the display area, an imaging optical path is configured when an image of a subject located in front of the display area is picked up by an image pickup device for capturing a three-dimensional image at least on the back side of the display area of the display panel. A display device characterized by that. A liquid crystal panel having a display area for displaying a three-dimensional image;
A light guide plate disposed opposite to the back side of the liquid crystal panel, and a backlight device including a backlight light source for supplying light to the light guide plate;
Have
In the display area, an imaging optical path is configured when an image of a subject located in front of the display area is picked up by at least a three-dimensional image pickup imaging element arranged on the back side of the display area.
The display device according to claim 1, wherein the light guide plate is configured with a hole or a translucent part for imaging the subject through the imaging optical path. A liquid crystal panel having a display area for displaying a three-dimensional image;
A light guide plate disposed opposite to the back side of the liquid crystal panel, and a backlight device including a backlight light source for supplying light to the light guide plate;
Have
In the display area, an imaging optical path is provided when an image of a subject located in front of the display area is picked up by a three-dimensional image pickup imaging element disposed at least on the back side of the area overlapping the display area in the light guide plate. Configured,
The display device, wherein the light guide plate executes a light scattering mode for emitting light to the liquid crystal panel and a light transmission mode for imaging the subject through the imaging optical path. A projection member constituting a display area;
A projector for projecting and displaying a three-dimensional image on the display area of the projection member;
Have
The projection member includes a translucent part that can capture an image of a subject located in front of the projection member from an imaging element for capturing a three-dimensional image arranged on the back side of the projection member. Characteristic display device.